US20080072386A1 - Locking coupler for floor maintenance pad - Google Patents
Locking coupler for floor maintenance pad Download PDFInfo
- Publication number
- US20080072386A1 US20080072386A1 US11/904,340 US90434007A US2008072386A1 US 20080072386 A1 US20080072386 A1 US 20080072386A1 US 90434007 A US90434007 A US 90434007A US 2008072386 A1 US2008072386 A1 US 2008072386A1
- Authority
- US
- United States
- Prior art keywords
- retainer
- base
- lip structure
- engageable
- drive disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000012423 maintenance Methods 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 claims abstract description 41
- 238000010168 coupling process Methods 0.000 claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/02—Floor surfacing or polishing machines
- A47L11/10—Floor surfacing or polishing machines motor-driven
- A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
- A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
- A47L11/164—Parts or details of the brushing tools
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4038—Disk shaped surface treating tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B45/00—Means for securing grinding wheels on rotary arbors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
- F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
Definitions
- the present invention relates to apparatus for securing a pad to a rotary floor machine of the type used in floor maintenance, and more particularly, a “snap together” coupler for securing a pad to a rotating driver disc of a floor maintenance machine.
- Coupler devices are well known for centering and coupling a floor maintenance pad to a pad driver disc.
- the pad driver disc is rotated by the drive shaft of a power-driven floor maintenance machine.
- One example of such a coupling device is illustrated and described in U.S. Pat. No. 4,536,912.
- a pad coupler device typically has two parts, one of which is secured to the pad driver and the other of which is removable and is used to secure the pad to the pad driver.
- the two parts may have threaded portions which interengage in order to secure the retaining portion to the pad driven portion.
- An example of a threaded engagement is illustrated in U.S. Pat. No. 5,400,461.
- the retainer portion of the coupling device be easily released.
- release of the retainer from the base in order to release the pad from the pad driver can be difficult.
- the coupling is not as reliable as desired.
- U.S. Pat. No. 5,806,132 which is owned by the Assignee of the present application, discloses an example of a “snap-together” coupling device.
- the illustrated coupling device has retainer and base members that are easily released and the device has enjoyed commercial success.
- an improved coupling device is desirable.
- the present invention provides a new and improved coupling device for securing a pad to a drive disc of a floor maintenance machine.
- the invention comprises a “snap together” coupling device which includes a base mountable coaxially to the drive disc, having an annular, axially extending flange or wall.
- a retainer is releasably engageable with the base and in particular, carries a retaining element having portions engageable with wall structure defined by the annular, axially extending flange defined by the base.
- the annular, axially extending flange defined by the base includes an internal undercut that defines a radially extending lip.
- both the annular flange and the lip are continuous.
- the lip defines an engagement surface for portions of the retaining element that is carried by the retainer.
- the retainer defines a hub-like structure which mounts the retaining element.
- the hub includes openings through which portions of the retaining element movably extend. These portions engage an underside of the lip defined by the base and resist separation of the retainer from the base.
- the retaining element in a retainer clip and the clip engagement portions define corner-like segments. These corner segments co-engage the underside of the lip when the retainer is installed on the base.
- these corner segments are located at distal ends of associated resilient support legs.
- the support legs are slidably held by the hub.
- the hub includes spaced apart, laterally extending hub segments/tabs which together define slots for receiving the legs of the retaining clip.
- the retainer may define a lug which is also engageable with the underside of the lip defined by the base.
- the engagement lug is supported by an associated lug support forming part of the retainer.
- the resilient legs of the retaining clip are interconnected by a connecting segment. Distal ends of the legs terminate in actuating segments which are designed to receive finger pressure by an operator. Squeezing the actuating segments towards each other causes the corner segments of the retaining clip to move out of engagement with the lip defined by the base thus releasing the retainer from the base.
- the actuating segments, corner segments, resilient legs and connecting segment are integrally formed from suitably selected spring wire and thus define a spring clip.
- both the base and retainer are molded from a suitable polymer.
- the disclosed coupling device is easily separated when a floor maintenance pad, etc. needs to be replaced.
- the elimination of the central post of the prior art opens up the central portion of the coupling device and allows cleaning fluids, etc. carried by the maintenance machine to be discharged onto the floor (through the coupling device) during the floor maintenance operation.
- the legs of the spring clip are squeezed together (via the finger receiving segments) in order to move the corner segments of the spring clip inwardly and out of engagement with the lip forming part of the base. Once the corner segments disengage the lip, the retainer can be easily moved in an axial direction, out of engagement with the base.
- the machine pad is placed in position on the base and the retainer is then pushed back onto the base.
- the axially extending wall preferably includes a chamfered or cone-shaped end surface which urges the corner segments of the springs to move inwardly as the retainer is pushed into engagement with the base.
- the resilient legs of the spring clip urge the corner segments outwardly as the corner segments pass the lip and thus cause the corner segments to move outwardly to engage the underside of the lip.
- FIG. 1 is an exploded perspective view of a floor maintenance machine coupler of the present invention
- FIG. 1A is a top plan view of the maintenance machine coupler shown in FIG. 1 ;
- FIG. 2 is an exploded perspective view of a coupler mounted to a floor maintenance machine
- FIG. 3 is a bottom plan view of the coupler shown in FIG. 1 ;
- FIG. 4 is a side view of the coupler
- FIG. 5 is a cross-sectional view of the coupler as seen from the plane indicated by the line 5 - 5 in FIG. 3 ;
- FIG. 6 is a cross-sectional view of the coupler as seen from the plane indicated by the line 6 - 6 in FIG. 3 .
- a pad coupler 10 for a floor maintenance machine which has a base 12 and a retainer 14 .
- the base 12 is coaxially attached to a pad driver disc 16 .
- a portion of the retainer 14 extends through a circular mounting hole 18 of a floor maintenance pad 20 and, as will be de-scribed, “snaps” onto the base 12 .
- the coupler 10 centers and holds the pad 20 to the disc 16 when in its coupled state.
- the pad driver 16 engages the upper surface of the pad 20 with a plurality of bristles which operate to drivingly engage the pad for a variety of floor maintenance operations such as polishing, burnishing, scrubbing and stripping.
- floor maintenance operations such as polishing, burnishing, scrubbing and stripping.
- Each separate task requires a pad 20 with particular abrasive characteristics. Due to the “snap together” feature of the disclosed pad coupler, the retainer 14 is readily uncoupled from the base 12 to permit an operator to replace the pad 20 .
- the base 12 is preferably molded and includes a circular, axially extending wall or flange 22 (see FIG. 1 ).
- a circular flange 24 extends radially outwardly from the wall or axial flange 22 .
- the radially extending flange 24 has a plurality of screw holes 26 formed in its surface for attaching the base 12 to the driver disk 16 with fasteners such as screws. Numerous holes 26 are provided in various patterns to make the base 12 compatible with many if not most of the conventional types of pad drivers 16 , now on the market.
- a plurality of tines 28 is formed on the side of the flange 24 that faces away from the driver disk 16 . The tines 28 project in the axial direction and pierce the pad 20 ) and hold it in position. The tines 28 also serve to inhibit the pad 20 from stretching outwardly during high speed operation due the influence of centrifugal force.
- the retainer 14 includes a hub 32 and a radial flange 34 .
- the hub 32 of the retainer 14 is sized and configured to slidably fit within the axial flange 22 defined by the base 12 .
- the axially extending flange or wall 22 of the base 12 includes an undercut indicated generally by the reference character 30 .
- the undercut 30 defines a lip 30 a that extends radially inwardly from an inside wall 22 a of the axial flange 22 .
- An underside 30 b of the lip 30 a defines an engagement surface engageable by retaining structure forming part of the retainer 14 .
- the axial flange 22 also defines a cone-shaped camming surface 36 and as will be described, facilitates engagement of the retainer 14 with the base 12 .
- the wall 12 and associated lip structure 30 is continuous. Segmented or discontinuous axial flanges and lip structure are contemplated by the present invention.
- the retainer 14 mounts a retaining element 40 and other structure which is engageable with the lip structure 30 .
- the retainer 14 is releasably held to the base 12 .
- the retaining element is a locking or retaining clip 40 and the other structure is a lug 48 that is preferably molded and forms an integral part of the retainer 14 .
- the locking clip 40 is preferably formed from suitable spring wire and is loosely held within the hub 32 of the retainer 14 .
- the spring clip 40 includes a pair of corner segments 40 a formed near the ends of associated, resilient, leg elements 40 b .
- the leg elements 40 b are interconnected by a bridging segment 40 c .
- the retainer clip 40 is generally U-shaped. Distal ends of the legs 40 b terminate in associated circular/square shaped loops 40 d which define finger engageable pressure pads. As should be apparent from viewing FIG. 3 , squeezing the pressure pads urges the locking legs 40 b towards each other, thus moving the corner segments 40 a inwardly.
- the spring clip 40 is configured such that the corner segments 40 b are urged outwardly when the pressure pads 40 c are released.
- the corner segments 40 b extend through associated slots 50 formed in the hub 32 .
- the hub 32 also includes two pairs of laterally extending segments 52 disposed on either side of an associated axially spaced tab 54 .
- Each leg 40 b of the spring clip 40 is thus slidably captured between a pair of laterally extending segments 52 and the associated axially spaced tab 54 (shown best in FIGS. 1 , 1 A and 3 ).
- the bridging segment 40 c of the spring clip 40 is held in spaced apart slots 56 , one of which is shown in FIG. 5 .
- the engagement of the spring clip 40 with the slots 56 , the lateral segments 52 and the tabs 54 captures and maintains the spring clip 40 within the hub 32 of the retainer 14 .
- the disclosed engagement allows sliding movement of the legs 40 b to enable the corner segments 40 a to be moved from an outward, engaged position at which the corner segments 40 a engage the underside 30 b of the lip 30 a of the base and a released position at which the corner segments 40 a are moved inwardly and are disengaged from the lip structure 30 .
- the locking lug 48 is positioned in substantially the same plane as the corner segments 40 a of the spring clip 40 . Accordingly, when the retainer 14 is installed into the base 12 , an underside 48 a of the lug 48 engages the lip surface 30 b of the base 12 . The retainer 14 is thus held to the base 12 by means of the engagement between the lip structure 30 of the base and the corner segments 40 a of the spring clip 40 and the lug 48 that is preferably molded into the retainer 14 .
- the retainer 14 is easily disengaged from the base 12 by squeezing the loops 40 d of the spring clip 40 in order to move the corner segments 40 a inwardly and out of engagement with the lip 30 .
- the disengagement of the corner segments 40 a allows at least a portion of the retainer 14 to be separated slightly to enable the disengagement of the locking lug 48 from the lip 30 resulting in the separation of the retainer from the base.
- the retainer 14 is easily reengaged with the base 12 by simply aligning the hub 32 of the retainer with the axial flange 22 and pushing the retainer 22 axially towards the base 14 .
- the camming surface 36 defined by the axial flange 22 urges the corner segments 40 a inwardly to allow the segments to pass the lip structure 30 .
- the legs 40 b urge the corner segments 40 a outwardly so that they engage the underside 30 b of the lip 30 , thus locking the retainer 14 to the base 12 .
- the locking lug 48 forming part of the retainer 14 , is supported by a resilient arm 48 b (see FIGS. 1 and 5 ) molded into the retainer 14 , and it too, can move radially inwardly in order to pass by the lip structure 30 .
- the disclosed locking coupler greatly facilitates the removal and reinstallation of a floor treatment pad onto a floor maintenance machine.
- the configuration and inter-engagement between the hub 32 and the axial flange 22 provides a self-centering feature which allows the operator to simply snap on the retainer 14 when replacing a floor treatment pad. Special tools or auxiliary fasteners are not needed.
- a rather large central opening is defined by the coupler 10 that facilitates the flow of cleaning and other solutions from the floor maintenance machines onto the floor during machine operation.
- the cleaning efficiency of the machine is thus substantially improved over the prior art where cleaning solutions were fed through relatively small central openings or small holes in the coupler itself.
Abstract
A coupler is disclosed for coupling floor maintenance pads to a pad driven disc. The coupler has one part which is mounted to or from an integral part of the driver disc and a second part which snaps onto the first part for holding and centering a maintenance pad to a disc. A spring lock arrangement is provided for preventing the coupler from separating and comprises a spring clip carried by the retainer engageable with lip structure formed on an axially extending wall or flange forming part of the base part. The spring clip is held to the retainer by hub segments and axially spaced tabs which define slots for slidably receiving portions of the spring clip. The spring clips include a pair of elongate legs interconnected by a bridging segment on one end and a pair of finger engageable pressure pads on opposite ends by which the spring clip is squeezed to move corner segments carried by legs inwardly in order to disengage the lip structure thereby releasing the retainer from the base.
Description
- The present invention relates to apparatus for securing a pad to a rotary floor machine of the type used in floor maintenance, and more particularly, a “snap together” coupler for securing a pad to a rotating driver disc of a floor maintenance machine.
- Coupler devices are well known for centering and coupling a floor maintenance pad to a pad driver disc. The pad driver disc is rotated by the drive shaft of a power-driven floor maintenance machine. One example of such a coupling device is illustrated and described in U.S. Pat. No. 4,536,912.
- A pad coupler device typically has two parts, one of which is secured to the pad driver and the other of which is removable and is used to secure the pad to the pad driver. Various methods for maintaining the engagement between the pad driver mounted portion and the retainer portion have been suggested for use in the prior art. For example, the two parts may have threaded portions which interengage in order to secure the retaining portion to the pad driven portion. An example of a threaded engagement is illustrated in U.S. Pat. No. 5,400,461.
- Other coupling structures have also been disclosed in the prior art. For example, in U.S. Pat. No. 4,541,207, a “pull-apart” design is illustrated. In the construction shown in this patent, interengaging lips are used to releasably secure a “split-ring” retainer to a base. In the disclosed coupling device, friction and elasticity are relied upon to maintain engagement of the members.
- Since the pads of a floor cleaning machine are replaced frequently due to wear or the need to use a pad with different abrasive characteristics, it is important that the retainer portion of the coupling device be easily released. In many of the prior art devices, release of the retainer from the base in order to release the pad from the pad driver can be difficult. In some constructions that provide easy release of the retainer, the coupling is not as reliable as desired.
- U.S. Pat. No. 5,806,132, which is owned by the Assignee of the present application, discloses an example of a “snap-together” coupling device. The illustrated coupling device has retainer and base members that are easily released and the device has enjoyed commercial success. However, an improved coupling device is desirable.
- The present invention provides a new and improved coupling device for securing a pad to a drive disc of a floor maintenance machine. In particular, the invention comprises a “snap together” coupling device which includes a base mountable coaxially to the drive disc, having an annular, axially extending flange or wall. A retainer is releasably engageable with the base and in particular, carries a retaining element having portions engageable with wall structure defined by the annular, axially extending flange defined by the base.
- In the preferred and illustrated embodiment, the annular, axially extending flange defined by the base includes an internal undercut that defines a radially extending lip. In the illustrated embodiment, both the annular flange and the lip are continuous. The lip defines an engagement surface for portions of the retaining element that is carried by the retainer.
- Preferably the retainer defines a hub-like structure which mounts the retaining element. The hub includes openings through which portions of the retaining element movably extend. These portions engage an underside of the lip defined by the base and resist separation of the retainer from the base.
- In the illustrated embodiment, the retaining element in a retainer clip and the clip engagement portions define corner-like segments. These corner segments co-engage the underside of the lip when the retainer is installed on the base.
- Preferably, these corner segments are located at distal ends of associated resilient support legs. The support legs are slidably held by the hub. In particular, the hub includes spaced apart, laterally extending hub segments/tabs which together define slots for receiving the legs of the retaining clip.
- According to a feature of the invention, the retainer may define a lug which is also engageable with the underside of the lip defined by the base. In the illustrated embodiment, the engagement lug is supported by an associated lug support forming part of the retainer.
- According to another feature of the invention, the resilient legs of the retaining clip are interconnected by a connecting segment. Distal ends of the legs terminate in actuating segments which are designed to receive finger pressure by an operator. Squeezing the actuating segments towards each other causes the corner segments of the retaining clip to move out of engagement with the lip defined by the base thus releasing the retainer from the base.
- In the preferred and illustrated embodiment, the actuating segments, corner segments, resilient legs and connecting segment are integrally formed from suitably selected spring wire and thus define a spring clip.
- According to another feature of the invention, both the base and retainer are molded from a suitable polymer.
- The disclosed coupling device is easily separated when a floor maintenance pad, etc. needs to be replaced. In addition, the elimination of the central post of the prior art, opens up the central portion of the coupling device and allows cleaning fluids, etc. carried by the maintenance machine to be discharged onto the floor (through the coupling device) during the floor maintenance operation.
- With the disclosed snap-together coupling device, machine pads can be easily removed and reinstalled onto a floor maintenance machine. To remove the retainer from the base, the legs of the spring clip are squeezed together (via the finger receiving segments) in order to move the corner segments of the spring clip inwardly and out of engagement with the lip forming part of the base. Once the corner segments disengage the lip, the retainer can be easily moved in an axial direction, out of engagement with the base. The machine pad is placed in position on the base and the retainer is then pushed back onto the base. The axially extending wall preferably includes a chamfered or cone-shaped end surface which urges the corner segments of the springs to move inwardly as the retainer is pushed into engagement with the base. The resilient legs of the spring clip urge the corner segments outwardly as the corner segments pass the lip and thus cause the corner segments to move outwardly to engage the underside of the lip.
- Additional features of the invention will become apparent and a fuller understanding obtained by reading the following detailed description made in connection with the accompanying drawings.
-
FIG. 1 is an exploded perspective view of a floor maintenance machine coupler of the present invention; -
FIG. 1A is a top plan view of the maintenance machine coupler shown inFIG. 1 ; -
FIG. 2 is an exploded perspective view of a coupler mounted to a floor maintenance machine; -
FIG. 3 is a bottom plan view of the coupler shown inFIG. 1 ; -
FIG. 4 is a side view of the coupler; -
FIG. 5 is a cross-sectional view of the coupler as seen from the plane indicated by the line 5-5 inFIG. 3 ; and -
FIG. 6 is a cross-sectional view of the coupler as seen from the plane indicated by the line 6-6 inFIG. 3 . - Referring to
FIG. 1 , apad coupler 10 for a floor maintenance machine is shown which has abase 12 and aretainer 14. As seen inFIG. 2 , thebase 12 is coaxially attached to apad driver disc 16. A portion of theretainer 14 extends through acircular mounting hole 18 of afloor maintenance pad 20 and, as will be de-scribed, “snaps” onto thebase 12. Thecoupler 10 centers and holds thepad 20 to thedisc 16 when in its coupled state. - In the machine illustrated in
FIG. 2 , thepad driver 16 engages the upper surface of thepad 20 with a plurality of bristles which operate to drivingly engage the pad for a variety of floor maintenance operations such as polishing, burnishing, scrubbing and stripping. Each separate task requires apad 20 with particular abrasive characteristics. Due to the “snap together” feature of the disclosed pad coupler, theretainer 14 is readily uncoupled from the base 12 to permit an operator to replace thepad 20. - The
base 12 is preferably molded and includes a circular, axially extending wall or flange 22 (seeFIG. 1 ). Acircular flange 24 extends radially outwardly from the wall oraxial flange 22. Theradially extending flange 24 has a plurality of screw holes 26 formed in its surface for attaching the base 12 to thedriver disk 16 with fasteners such as screws.Numerous holes 26 are provided in various patterns to make the base 12 compatible with many if not most of the conventional types ofpad drivers 16, now on the market. A plurality oftines 28 is formed on the side of theflange 24 that faces away from thedriver disk 16. Thetines 28 project in the axial direction and pierce the pad 20) and hold it in position. Thetines 28 also serve to inhibit thepad 20 from stretching outwardly during high speed operation due the influence of centrifugal force. - The
retainer 14 includes ahub 32 and aradial flange 34. As will be described, thehub 32 of theretainer 14 is sized and configured to slidably fit within theaxial flange 22 defined by thebase 12. - Referring to
FIGS. 1 , 5 and 6, the axially extending flange orwall 22 of thebase 12 includes an undercut indicated generally by thereference character 30. As seen best inFIGS. 5 and 6 , the undercut 30 defines alip 30 a that extends radially inwardly from aninside wall 22 a of theaxial flange 22. Anunderside 30 b of thelip 30 a, defines an engagement surface engageable by retaining structure forming part of theretainer 14. As seen best inFIGS. 5 and 6 , theaxial flange 22 also defines a cone-shapedcamming surface 36 and as will be described, facilitates engagement of theretainer 14 with thebase 12. - In the preferred and illustrated embodiment, the
wall 12 and associatedlip structure 30 is continuous. Segmented or discontinuous axial flanges and lip structure are contemplated by the present invention. - Turning now to
FIGS. 1 , 5 and 6, theretainer 14 mounts a retainingelement 40 and other structure which is engageable with thelip structure 30. When thelip 30 a is engaged by theelement 40 and other structure, theretainer 14 is releasably held to thebase 12. - In the preferred and illustrated embodiment, the retaining element is a locking or retaining
clip 40 and the other structure is alug 48 that is preferably molded and forms an integral part of theretainer 14. - Referring also to
FIG. 3 , the lockingclip 40 is preferably formed from suitable spring wire and is loosely held within thehub 32 of theretainer 14. As seen best inFIG. 3 , thespring clip 40 includes a pair ofcorner segments 40 a formed near the ends of associated, resilient,leg elements 40 b. Theleg elements 40 b are interconnected by a bridgingsegment 40 c. In the illustrated embodiment, theretainer clip 40 is generally U-shaped. Distal ends of thelegs 40 b terminate in associated circular/square shapedloops 40 d which define finger engageable pressure pads. As should be apparent from viewingFIG. 3 , squeezing the pressure pads urges the lockinglegs 40 b towards each other, thus moving thecorner segments 40 a inwardly. Thespring clip 40 is configured such that thecorner segments 40 b are urged outwardly when thepressure pads 40 c are released. - The
corner segments 40 b extend through associatedslots 50 formed in thehub 32. Thehub 32 also includes two pairs of laterally extendingsegments 52 disposed on either side of an associated axially spacedtab 54. Eachleg 40 b of thespring clip 40 is thus slidably captured between a pair of laterally extendingsegments 52 and the associated axially spaced tab 54 (shown best inFIGS. 1 , 1A and 3). The bridgingsegment 40 c of thespring clip 40 is held in spaced apartslots 56, one of which is shown inFIG. 5 . - The engagement of the
spring clip 40 with theslots 56, thelateral segments 52 and thetabs 54 captures and maintains thespring clip 40 within thehub 32 of theretainer 14. The disclosed engagement allows sliding movement of thelegs 40 b to enable thecorner segments 40 a to be moved from an outward, engaged position at which thecorner segments 40 a engage theunderside 30 b of thelip 30 a of the base and a released position at which thecorner segments 40 a are moved inwardly and are disengaged from thelip structure 30. - As seen best in
FIG. 5 , the lockinglug 48 is positioned in substantially the same plane as thecorner segments 40 a of thespring clip 40. Accordingly, when theretainer 14 is installed into thebase 12, anunderside 48 a of thelug 48 engages thelip surface 30 b of thebase 12. Theretainer 14 is thus held to thebase 12 by means of the engagement between thelip structure 30 of the base and thecorner segments 40 a of thespring clip 40 and thelug 48 that is preferably molded into theretainer 14. - The
retainer 14 is easily disengaged from the base 12 by squeezing theloops 40 d of thespring clip 40 in order to move thecorner segments 40 a inwardly and out of engagement with thelip 30. The disengagement of thecorner segments 40 a allows at least a portion of theretainer 14 to be separated slightly to enable the disengagement of the lockinglug 48 from thelip 30 resulting in the separation of the retainer from the base. - In the preferred and illustrated embodiment, the
retainer 14 is easily reengaged with the base 12 by simply aligning thehub 32 of the retainer with theaxial flange 22 and pushing theretainer 22 axially towards thebase 14. Thecamming surface 36 defined by theaxial flange 22 urges thecorner segments 40 a inwardly to allow the segments to pass thelip structure 30. Once thecorner segments 40 a move past thelip 30 a, thelegs 40 b urge thecorner segments 40 a outwardly so that they engage theunderside 30 b of thelip 30, thus locking theretainer 14 to thebase 12. The lockinglug 48, forming part of theretainer 14, is supported by aresilient arm 48 b (seeFIGS. 1 and 5 ) molded into theretainer 14, and it too, can move radially inwardly in order to pass by thelip structure 30. - It should be apparent that the disclosed locking coupler greatly facilitates the removal and reinstallation of a floor treatment pad onto a floor maintenance machine. The configuration and inter-engagement between the
hub 32 and theaxial flange 22 provides a self-centering feature which allows the operator to simply snap on theretainer 14 when replacing a floor treatment pad. Special tools or auxiliary fasteners are not needed. - In addition, a rather large central opening is defined by the
coupler 10 that facilitates the flow of cleaning and other solutions from the floor maintenance machines onto the floor during machine operation. The cleaning efficiency of the machine is thus substantially improved over the prior art where cleaning solutions were fed through relatively small central openings or small holes in the coupler itself. - Although the invention has been described with a certain degree of particularity it should be understood that those skilled in the art can make various changes to it without departing from the spirit or scope of the invention as hereinafter claimed.
Claims (24)
1. A snap together coupling device for mounting a floor maintenance pad having a circular mounting hole, to a drive disc, on a power driven floor maintenance machine, the coupling device comprising:
a) a base part mountable co-axially to the drive disc and having an axially extending flange, said flange defining a lip structure extending radially inwardly from an inner wall of said axial flange;
b) a retainer part defining structure sized and configured to fit within said axial flange of said base;
c) a retaining mechanism carried by said retainer part and including elements resiliently engageable with said lip structure whereby said base is inhibited from separating from said retainer.
2. The apparatus of claim 1 , wherein said axial flange is continuous.
3. The apparatus of claim 2 , wherein said lip structure is continuous.
4. The apparatus of claim 1 , wherein said retaining mechanism includes a locking lug engageable with said lip structure defined by said base.
5. The apparatus of claim 1 , wherein said retaining mechanism comprises a spring clip that defines corner segments near ends of resilient legs, said corner segments reciprocally movable between an outer position at which said corner segments engage said lip structure and an inner position at which said corner segments substantially disengage said lip structure whereby said retainer can be separated from said base.
6. The apparatus of claim 1 , wherein said retaining mechanism comprises a U-shaped spring having a pair of engagement legs interconnected by a bridging portion and further including elements by which pressure is applied to urge said leg portions towards each other in order to disengage portions of said spring from said lip structure, whereby said retainer part is released from said base part.
7. The coupling device of claim 1 wherein said base has a plurality of tines projecting in an axial direction for piercing said pad.
8. A snap together coupling device for mounting a floor maintenance pad to a drive disc on a power driven floor maintenance machine, comprising:
a) a base attached to said drive disc and including an axially extending wall, said wall defining a lip structure extending radially inwardly from said wall;
b) a retainer engageable with said base including alignment structure for aligning said retainer with said base as said retainer is installed on said base; and,
c) a retaining element carried by said retainer and including portions engageable with said lip structure, such that said retaining element inhibits separation of said retainer from said base when said retaining element engages said lip structure.
9. The coupling device of claim 8 , wherein said retaining element comprises a U-shaped spring clip loosely held by a hub forming part of said retainer.
10. The apparatus of claim 9 , wherein said hub defines at least a portion of said alignment structure.
11. The apparatus of claim 9 , wherein said spring clip includes a pair of elongate legs that extend from a bridging section.
12. The coupling device of claim 11 , wherein said spring clip further comprises loops which define finger engageable pressure pads at ends of said elongate legs, such that squeezing said pressure pads urges said elongate legs towards each other in order to release the engagement between said spring clip and said lip structure.
13. The coupling device of claim 8 , wherein said retainer and base define a relatively large central opening through which floor treating fluids can be dispensed.
14. A snap together coupling device for mounting a floor maintenance pad to a drive disc on a power driven floor maintenance machine, comprising:
a) a first coupling member attached to, or forming part of, said drive disc;
b) a second coupling member engageable with said first coupling member;
c) one of said coupling members including alignment structure for aligning said second coupling member with said first coupling member as said second coupling member is installed on said first coupling member;
d) one of said coupling members including an axially extending flange, said flange defining a lip structure extending radially inwardly from an inner wall of said axial flange; and,
e) a retaining element carried by the other of said coupling members and including portions engageable with said lip structure, such that said retaining element inhibits separation of said first coupling member from said second coupling member when said retaining element engages said lip structure.
15. The apparatus of claim 14 wherein said base portion is attached to said drive disc by suitable fasteners.
16. The apparatus of claim 15 wherein said first coupling member comprises a base and said second coupling member comprises a retainer.
17. The apparatus of claim 16 wherein said base includes an axial flange and said retainer carries said retaining element.
18. A snap together coupling device for mounting a floor maintenance pad having a circular mounting hole to a drive disc on a power driven floor maintenance machine, the coupling device comprising:
a) a base portion forming part of and having an axis of rotation substantially coincident with an axis of rotation of said drive disc;
b) a retainer portion engageable with said base portion;
c) one of said portions including an axially extending flange, said flange defining a lip structure extending radially inwardly from an inner wall of said axial flange;
d) a retaining mechanism carried by the other of said portions and engageable with said lip structure, whereby said base portion is inhibited from separating from said retainer portion.
19. The apparatus of claim 18 wherein one of said portions defines receiving structure for a hub defined by said other portion whereby said one portion is centered with respect to said other portion during installation.
20. The apparatus of claim 19 wherein said retaining mechanism is carried by said retaining portion.
21. The apparatus of claim 18 wherein said base portion is a separate member, secured to said drive disc.
22. The apparatus of claim 18 wherein said base portion is integrally formed in said drive disc.
23. The apparatus of claim 14 wherein said first coupling member is molded into said drive disc.
24. The apparatus of claim 14 wherein said alignment structure comprises a hub.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/904,340 US20080072386A1 (en) | 2006-09-27 | 2007-09-27 | Locking coupler for floor maintenance pad |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84742606P | 2006-09-27 | 2006-09-27 | |
US11/904,340 US20080072386A1 (en) | 2006-09-27 | 2007-09-27 | Locking coupler for floor maintenance pad |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080072386A1 true US20080072386A1 (en) | 2008-03-27 |
Family
ID=39223333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/904,340 Abandoned US20080072386A1 (en) | 2006-09-27 | 2007-09-27 | Locking coupler for floor maintenance pad |
Country Status (1)
Country | Link |
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US (1) | US20080072386A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012175790A1 (en) * | 2011-06-23 | 2012-12-27 | Mika Ahonen | Arrangement for floor grinding |
US8978190B2 (en) | 2011-06-28 | 2015-03-17 | Karcher North America, Inc. | Removable pad for interconnection to a high-speed driver system |
WO2019073445A1 (en) * | 2017-10-13 | 2019-04-18 | Beco Holding Limited | A polishing system and a polishing tool comprising said polishing system |
JP7350429B2 (en) | 2019-07-09 | 2023-09-26 | 株式会社ディスコ | Grindstone protection member and wheel case |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US881691A (en) * | 1907-05-23 | 1908-03-10 | Herbert S Hughes | Mandrel for dental engines. |
US1933846A (en) * | 1928-08-29 | 1933-11-07 | Finnell System Inc | Floor machine |
US2995765A (en) * | 1959-06-11 | 1961-08-15 | Norton Co | Pad holders |
US3095258A (en) * | 1962-06-22 | 1963-06-25 | Du Pont | Melt spinning process for producing hollow-core filament |
US3135981A (en) * | 1962-07-12 | 1964-06-09 | Floyd J Fitch | Adjustable floor pad holder |
US3183018A (en) * | 1962-10-23 | 1965-05-11 | Pacific Car & Foundry Co | Vehicle spring suspension employing torsion spring mechanism |
US3270467A (en) * | 1963-07-01 | 1966-09-06 | Merit Products Inc | Abrasive device |
US3436875A (en) * | 1966-08-05 | 1969-04-08 | Ralph R Cheney | Abrasive disc holder |
US3795932A (en) * | 1972-10-02 | 1974-03-12 | Beatrice Foods Co | Versatile flow-through foam carpet cleaning apparatus |
US3823516A (en) * | 1970-11-24 | 1974-07-16 | Norton Co | Motion imparting member incorporating holding means for nonwoven fibrous abrasive pads |
US4177611A (en) * | 1978-05-24 | 1979-12-11 | Carr Rollett Derrick | Sanding and buffing attachment for power tools |
US4536912A (en) * | 1983-11-14 | 1985-08-27 | Malish Terrance J | Coupler device for floor maintenance pad or the like |
US4541207A (en) * | 1984-02-06 | 1985-09-17 | Flo-Pac Corporation | Pull-apart mounting hub |
US4662024A (en) * | 1985-09-03 | 1987-05-05 | Oceanlense, Limited | Center-grip pad holder for floor maintenance machine |
US4866804A (en) * | 1987-10-16 | 1989-09-19 | Tennant Trend, Inc. | Quick connect/disconnect for a surface cleaning machine |
US4888843A (en) * | 1988-10-27 | 1989-12-26 | Hako Minuteman, Inc. | Holder for rotary pad |
US5128208A (en) * | 1990-12-14 | 1992-07-07 | E. I. Du Pont De Nemours And Company | Flaggable synthetic tapered paintbrush bristles |
US5212851A (en) * | 1991-05-31 | 1993-05-25 | Yoshida Kogyo K.K. | Snap-fit button |
US5337458A (en) * | 1992-07-21 | 1994-08-16 | Yoshida Kogyo K.K. | Cord stopper |
US5400461A (en) * | 1993-01-12 | 1995-03-28 | Malish Brush And Specialty Company | Locking coupler for floor maintenance pad |
US5413857A (en) * | 1992-12-10 | 1995-05-09 | Basf Corporation | Mixed cross-section carpet yarn |
US5421053A (en) * | 1994-04-28 | 1995-06-06 | Aar Corp. | Removable brush coupling |
US5462802A (en) * | 1991-12-02 | 1995-10-31 | Teijin Limited | Polyamide hollow and/or non-circular fiber and process for making same |
US5542751A (en) * | 1994-06-01 | 1996-08-06 | Del-Met Corporation | Grip ring wheel cover retention system |
US5619770A (en) * | 1995-11-24 | 1997-04-15 | Flo-Pac Corporation | Rotary pad holder with quick-release mechanism |
US5806132A (en) * | 1995-05-23 | 1998-09-15 | The Malish Corporation | Locking coupler for floor maintenance pad |
US6004194A (en) * | 1996-05-02 | 1999-12-21 | Robert Bosch Gmbh | Electric hand-operated grinder |
US6796885B2 (en) * | 2000-06-02 | 2004-09-28 | Freescale Semiconductor, Inc. | Pad conditioner coupling and end effector for a chemical mechanical planarization system and method therfor |
US6871371B2 (en) * | 2002-04-16 | 2005-03-29 | Castle Rock Industries, Inc | Floor care machine with replaceable floor care element |
-
2007
- 2007-09-27 US US11/904,340 patent/US20080072386A1/en not_active Abandoned
Patent Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US881691A (en) * | 1907-05-23 | 1908-03-10 | Herbert S Hughes | Mandrel for dental engines. |
US1933846A (en) * | 1928-08-29 | 1933-11-07 | Finnell System Inc | Floor machine |
US2995765A (en) * | 1959-06-11 | 1961-08-15 | Norton Co | Pad holders |
US3095258A (en) * | 1962-06-22 | 1963-06-25 | Du Pont | Melt spinning process for producing hollow-core filament |
US3135981A (en) * | 1962-07-12 | 1964-06-09 | Floyd J Fitch | Adjustable floor pad holder |
US3183018A (en) * | 1962-10-23 | 1965-05-11 | Pacific Car & Foundry Co | Vehicle spring suspension employing torsion spring mechanism |
US3270467A (en) * | 1963-07-01 | 1966-09-06 | Merit Products Inc | Abrasive device |
US3436875A (en) * | 1966-08-05 | 1969-04-08 | Ralph R Cheney | Abrasive disc holder |
US3823516A (en) * | 1970-11-24 | 1974-07-16 | Norton Co | Motion imparting member incorporating holding means for nonwoven fibrous abrasive pads |
US3795932A (en) * | 1972-10-02 | 1974-03-12 | Beatrice Foods Co | Versatile flow-through foam carpet cleaning apparatus |
US4177611A (en) * | 1978-05-24 | 1979-12-11 | Carr Rollett Derrick | Sanding and buffing attachment for power tools |
US4536912A (en) * | 1983-11-14 | 1985-08-27 | Malish Terrance J | Coupler device for floor maintenance pad or the like |
US4541207A (en) * | 1984-02-06 | 1985-09-17 | Flo-Pac Corporation | Pull-apart mounting hub |
US4662024A (en) * | 1985-09-03 | 1987-05-05 | Oceanlense, Limited | Center-grip pad holder for floor maintenance machine |
US4866804A (en) * | 1987-10-16 | 1989-09-19 | Tennant Trend, Inc. | Quick connect/disconnect for a surface cleaning machine |
US4888843A (en) * | 1988-10-27 | 1989-12-26 | Hako Minuteman, Inc. | Holder for rotary pad |
US5128208A (en) * | 1990-12-14 | 1992-07-07 | E. I. Du Pont De Nemours And Company | Flaggable synthetic tapered paintbrush bristles |
US5212851A (en) * | 1991-05-31 | 1993-05-25 | Yoshida Kogyo K.K. | Snap-fit button |
US5462802A (en) * | 1991-12-02 | 1995-10-31 | Teijin Limited | Polyamide hollow and/or non-circular fiber and process for making same |
US5337458A (en) * | 1992-07-21 | 1994-08-16 | Yoshida Kogyo K.K. | Cord stopper |
US5413857A (en) * | 1992-12-10 | 1995-05-09 | Basf Corporation | Mixed cross-section carpet yarn |
US5400461A (en) * | 1993-01-12 | 1995-03-28 | Malish Brush And Specialty Company | Locking coupler for floor maintenance pad |
US5421053A (en) * | 1994-04-28 | 1995-06-06 | Aar Corp. | Removable brush coupling |
US5542751A (en) * | 1994-06-01 | 1996-08-06 | Del-Met Corporation | Grip ring wheel cover retention system |
US5806132A (en) * | 1995-05-23 | 1998-09-15 | The Malish Corporation | Locking coupler for floor maintenance pad |
US5619770A (en) * | 1995-11-24 | 1997-04-15 | Flo-Pac Corporation | Rotary pad holder with quick-release mechanism |
US6004194A (en) * | 1996-05-02 | 1999-12-21 | Robert Bosch Gmbh | Electric hand-operated grinder |
US6796885B2 (en) * | 2000-06-02 | 2004-09-28 | Freescale Semiconductor, Inc. | Pad conditioner coupling and end effector for a chemical mechanical planarization system and method therfor |
US6871371B2 (en) * | 2002-04-16 | 2005-03-29 | Castle Rock Industries, Inc | Floor care machine with replaceable floor care element |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012175790A1 (en) * | 2011-06-23 | 2012-12-27 | Mika Ahonen | Arrangement for floor grinding |
CN103619541A (en) * | 2011-06-23 | 2014-03-05 | M·阿霍宁 | Arrangement for floor grinding |
US9174326B2 (en) | 2011-06-23 | 2015-11-03 | Mika Ahonen | Arrangement for floor grinding |
US8978190B2 (en) | 2011-06-28 | 2015-03-17 | Karcher North America, Inc. | Removable pad for interconnection to a high-speed driver system |
WO2019073445A1 (en) * | 2017-10-13 | 2019-04-18 | Beco Holding Limited | A polishing system and a polishing tool comprising said polishing system |
US10933502B2 (en) | 2017-10-13 | 2021-03-02 | Beco Holding Limited | Polishing system and a polishing tool comprising said polishing system |
JP7350429B2 (en) | 2019-07-09 | 2023-09-26 | 株式会社ディスコ | Grindstone protection member and wheel case |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MALISH CORPORATION, THE, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KELLEY, PATRICK J.;REEL/FRAME:019951/0117 Effective date: 20070926 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |