US20090242687A1 - Roller protective device - Google Patents
Roller protective device Download PDFInfo
- Publication number
- US20090242687A1 US20090242687A1 US12/149,626 US14962608A US2009242687A1 US 20090242687 A1 US20090242687 A1 US 20090242687A1 US 14962608 A US14962608 A US 14962608A US 2009242687 A1 US2009242687 A1 US 2009242687A1
- Authority
- US
- United States
- Prior art keywords
- roller
- cover
- operating arm
- protective device
- bracket
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/15—Roller assembly, particular roller arrangement
- B65H2404/152—Arrangement of roller on a movable frame
- B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
- B65H2407/50—Means for protecting parts of handling machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/26—Damages to handling machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/12—Single-function printing machines, typically table-top machines
Definitions
- the present invention is related to a roller protective device, and more particularly to a protective device for paper-feeding roller of an office machine such as a printer.
- the roller protective device automatically encloses the roller and isolates the roller from dusts and aerosols. Therefore, the stain of the dusts and aerosols on the roller can be minimized.
- An office machine is generally equipped with an automatic paper-feeding unit for delivering papers to be printed or scanned.
- the conventional paper-feeding unit generally includes multiple rollers for feeding papers or documents into the office machine and delivering the papers or documents through the office machine.
- pick rollers serve to drive a paper into the printer by means of frictional force.
- the rollers are likely to stain with dusts and aerosols to decrease the frictional force between the rollers and the paper. Under such circumstance, the rollers are unable to truly feed the paper or even fail to feed the paper.
- Taiwanese Patent No. 93120988 discloses a roller device equipped with a cleaning brush.
- the cleaning brush is mounted on a rack of the roller in contact with the roller.
- the brush cleans off the dusts and aerosols from the roller.
- the cleaning effect achieved by the brush is limited.
- roller protective device which automatically encloses the roller in a not used state and discloses the roller in an operating state.
- the roller protective device of the present invention includes: a bracket; an operating arm reciprocally movably mounted on the bracket, a roller being mountable on the operating arm, a cover movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller; and a resilient member positioned between the operating arm and the cover.
- the resilient member always exerts a resilient force onto the cover in a direction to the first position where the cover discloses the roller.
- the resilient member has a first end abutting against a shoulder section of the operating arm and a second end fixed on the cover.
- the cover has a projection or a pin.
- the projection or the pin interferes with a wall of the bracket. Under such circumstance, the cover is forcedly moved to the second position to enclose the roller.
- FIG. 1 is a perspective assembled view of the roller protective device of the present invention
- FIG. 2 is a perspective exploded view according to FIG. 1 ;
- FIG. 3 is a side view of the roller protective device of the present invention, showing that the operating arm is moved forward (rightward according to FIG. 3 );
- FIG. 4 is a side view of the roller protective device of the present invention, showing that the operating arm is moved backward;
- FIG. 5 is a side view according to FIG. 4 , showing that the operating arm is moved backward and the pin of the cover interferes with the bracket of the present invention.
- FIG. 6 is a side view according to FIG. 5 , showing that the cover is positioned in the second position where the cover encloses the roller of the present invention.
- the roller protective device of the present invention includes a bracket 10 having a pivot section 11 and an operating arm 20 having a pivot section 21 pivotally connected with the pivot section 11 of the bracket 10 . Accordingly, the operating arm 20 is reciprocally movably mounted on the bracket 10 .
- the operating arm 20 further has a mounting section 22 on which a roller or a pick roller 30 is mounted.
- the mounting section 22 has a hub section or a shaft 23 for pivotally connecting with a cover 40 .
- the cover 40 is movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller 30 .
- the cover 40 has a projection or a pin 41 .
- a resilient member 50 is fitted on the hub section or the shaft 23 of the mounting section 22 and positioned between the operating arm 20 and the cover 40 .
- the resilient member 50 has a first end 51 abutting against a shoulder section 24 of the mounting section 22 and a second end 52 fixed on the cover 40 . Accordingly, the resilient member 50 always exerts a resilient force onto the cover 40 in a direction to the first position where the cover 40 discloses the roller 30 .
- FIG. 3 shows that the operating arm 20 is moved forward (rightward according to FIG. 3 ) to a position where the roller 30 operates to feed or pick a paper.
- the cover 40 is positioned in the first position where the cover 40 discloses the roller 30 .
- the operating arm 20 is backward moved leftward.
- the projection or pin 41 of the cover 40 interferes with the wall 12 of the bracket 10 as shown in FIG. 4 .
- the cover 40 when the roller 30 feeds or picks the paper, the cover 40 automatically discloses the roller 30 . Reversely, in a not used state, the cover 40 automatically encloses the roller 30 and isolates the roller 30 from dusts and aerosols. Therefore, the stain of the dusts and aerosols on the roller 30 can be minimized.
Abstract
A roller protective device including a bracket, an operating arm reciprocally movably mounted on the bracket for holding a roller, a cover pivotally connected with the operating arm and movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller, and a resilient member positioned between the operating arm and the cover. The resilient member always exerts a resilient force onto the cover in a direction to the first position where the cover discloses the roller. In a not used state, the cover is automatically moved to the second position where the cover encloses the roller to protect the roller from contamination of aerosols.
Description
- The present invention is related to a roller protective device, and more particularly to a protective device for paper-feeding roller of an office machine such as a printer. In a not used state, the roller protective device automatically encloses the roller and isolates the roller from dusts and aerosols. Therefore, the stain of the dusts and aerosols on the roller can be minimized.
- An office machine is generally equipped with an automatic paper-feeding unit for delivering papers to be printed or scanned. The conventional paper-feeding unit generally includes multiple rollers for feeding papers or documents into the office machine and delivering the papers or documents through the office machine. For example, in a printer, pick rollers serve to drive a paper into the printer by means of frictional force. However, the rollers are likely to stain with dusts and aerosols to decrease the frictional force between the rollers and the paper. Under such circumstance, the rollers are unable to truly feed the paper or even fail to feed the paper.
- Taiwanese Patent No. 93120988 discloses a roller device equipped with a cleaning brush. The cleaning brush is mounted on a rack of the roller in contact with the roller. When the roller operates, the brush cleans off the dusts and aerosols from the roller. However, the cleaning effect achieved by the brush is limited.
- It is therefore tried by the applicant to provide a roller protective device which automatically encloses the roller in a not used state and discloses the roller in an operating state. By means of the roller protective device, the stain of dusts and aerosols on the roller can be minimized.
- It is therefore a primary object of the present invention to provide a roller protective device which is able to automatically enclose a paper-feeding roller of an office machine in a not used state. Accordingly, the stain of dusts and aerosols on the roller can be minimized.
- According to the above object, the roller protective device of the present invention includes: a bracket; an operating arm reciprocally movably mounted on the bracket, a roller being mountable on the operating arm, a cover movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller; and a resilient member positioned between the operating arm and the cover. The resilient member always exerts a resilient force onto the cover in a direction to the first position where the cover discloses the roller.
- In the above roller protective device, the resilient member has a first end abutting against a shoulder section of the operating arm and a second end fixed on the cover.
- In the above roller protective device, the cover has a projection or a pin. When the operating arm is moved backward, the projection or the pin interferes with a wall of the bracket. Under such circumstance, the cover is forcedly moved to the second position to enclose the roller.
- The present invention can be best understood through the following description and accompanying drawings wherein:
-
FIG. 1 is a perspective assembled view of the roller protective device of the present invention; -
FIG. 2 is a perspective exploded view according toFIG. 1 ; -
FIG. 3 is a side view of the roller protective device of the present invention, showing that the operating arm is moved forward (rightward according toFIG. 3 ); -
FIG. 4 is a side view of the roller protective device of the present invention, showing that the operating arm is moved backward; -
FIG. 5 is a side view according toFIG. 4 , showing that the operating arm is moved backward and the pin of the cover interferes with the bracket of the present invention; and -
FIG. 6 is a side view according toFIG. 5 , showing that the cover is positioned in the second position where the cover encloses the roller of the present invention. - Please refer to
FIGS. 1 and 2 . The roller protective device of the present invention includes abracket 10 having apivot section 11 and anoperating arm 20 having apivot section 21 pivotally connected with thepivot section 11 of thebracket 10. Accordingly, theoperating arm 20 is reciprocally movably mounted on thebracket 10. - The
operating arm 20 further has amounting section 22 on which a roller or apick roller 30 is mounted. In this embodiment, themounting section 22 has a hub section or ashaft 23 for pivotally connecting with acover 40. Thecover 40 is movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing theroller 30. As shown inFIGS. 1 and 2 , thecover 40 has a projection or apin 41. When theoperating arm 20 is moved backward to thebracket 10, the projection orpin 41 interferes with thewall 12 of thebracket 10. Under such circumstance, thecover 40 is forcedly moved to the second position to enclose theroller 30. This will be further described hereinafter. - A
resilient member 50 is fitted on the hub section or theshaft 23 of themounting section 22 and positioned between theoperating arm 20 and thecover 40. Theresilient member 50 has afirst end 51 abutting against ashoulder section 24 of themounting section 22 and asecond end 52 fixed on thecover 40. Accordingly, theresilient member 50 always exerts a resilient force onto thecover 40 in a direction to the first position where thecover 40 discloses theroller 30. -
FIG. 3 shows that theoperating arm 20 is moved forward (rightward according toFIG. 3 ) to a position where theroller 30 operates to feed or pick a paper. At this time, with theresilient member 50 free from any external force, thecover 40 is positioned in the first position where thecover 40 discloses theroller 30. After the feeding or picking operation of theroller 30 is completed, theoperating arm 20 is backward moved leftward. At this time, the projection orpin 41 of thecover 40 interferes with thewall 12 of thebracket 10 as shown inFIG. 4 . - Referring to
FIG. 5 , when theoperating arm 20 further swings leftward, due to the interference of thewall 12 with the projection orpin 41 of thecover 40, thecover 40 is forcedly rotated to the second position. At this time, theresilient member 50 is twisted to conserve energy and thecover 40 encloses theroller 30 as shown inFIG. 6 . It should be noted that when theoperating arm 20 again swings rightward, the projection orpin 41 of thecover 40 is released from the interference of thewall 12. At this time, theresilient member 50 will release the conserved energy and resiliently force thecover 40 to move toward the first position where thecover 40 again discloses theroller 30 as shown inFIG. 3 . - According to the above arrangement, when the
roller 30 feeds or picks the paper, thecover 40 automatically discloses theroller 30. Reversely, in a not used state, thecover 40 automatically encloses theroller 30 and isolates theroller 30 from dusts and aerosols. Therefore, the stain of the dusts and aerosols on theroller 30 can be minimized. - The present invention has the following advantages over the conventional device:
-
- 1. In comparison with the conventional device, the structure of the roller protective device of the present invention is simplified without occupying much room.
- 2. Instead of the conventional cleaning brush for cleaning the roller, the roller protective device of the present invention serves to automatically enclose the
roller 30 in a not used state and disclose theroller 30 in an operating state. Therefore, the stain of the dusts and aerosols on theroller 30 can be avoided or minimized.
- The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Claims (8)
1. A roller protective device comprising:
a bracket;
an operating arm pivotally connected with the bracket and reciprocally movably mounted on the bracket;
a roller mounted on the operating arm; and
a cover movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller.
2. The roller protective device as claimed in claim 1 , wherein the bracket has a wall and a pivot section pivotally connecting with the operating arm.
3. The roller protective device as claimed in claim 2 , wherein the operation arm has a pivot section pivotally connected with the pivot section of the bracket.
4. The roller protective device as claimed in claim 1 , wherein the operating arm has a mounting section on which the roller is mounted.
5. The roller protective device as claimed in claim 4 , wherein the mounting section has a hub section or a shaft for pivotally connecting with the cover.
6. The roller protective device as claimed in claim 1 , wherein the cover has a projection or a pin.
7. The roller protective device as claimed in claim 1 , wherein a resilient member is positioned between the operating arm and the cover.
8. The roller protective device as claimed in claim 7 , wherein the resilient member has a first end abutting against a shoulder section of the operating arm and a second end fixed on the cover.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW097110643A TWI388436B (en) | 2008-03-25 | 2008-03-25 | Roller protective unit of office machine |
TW097110643 | 2008-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090242687A1 true US20090242687A1 (en) | 2009-10-01 |
Family
ID=41115626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/149,626 Abandoned US20090242687A1 (en) | 2008-03-25 | 2008-05-06 | Roller protective device |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090242687A1 (en) |
TW (1) | TWI388436B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10106348B2 (en) * | 2015-11-05 | 2018-10-23 | Canon Kabushiki Kaisha | Supply unit and image forming apparatus |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1746053A (en) * | 1926-07-16 | 1930-02-04 | Jr Thomas B Rice | Safety guard |
US1911812A (en) * | 1932-08-31 | 1933-05-30 | Dasenbrock John | Guard attachment for wringers |
US2650569A (en) * | 1951-11-29 | 1953-09-01 | Robert T Adkins | Copyholder |
US4318324A (en) * | 1980-09-22 | 1982-03-09 | Rock Mill, Inc. | Cutting machine with guard for cutting blade |
US4462677A (en) * | 1981-06-22 | 1984-07-31 | Canon Kabushiki Kaisha | Image formation apparatus using a process unit with a protective cover |
USD275015S (en) * | 1981-09-09 | 1984-08-07 | Machinefabriek Bewo B.V. | Protective hood for a circular saw |
US4799416A (en) * | 1987-04-03 | 1989-01-24 | Hitachi Koki Company, Ltd. | Guard-moving system in a cutting apparatus |
US5090085A (en) * | 1988-01-26 | 1992-02-25 | Ez Paintr Corporation | Paint roller having adjustable spatter shield |
US5153640A (en) * | 1990-09-27 | 1992-10-06 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus having a recording unit detachably assembled therein with a selectively opened portion |
US5724875A (en) * | 1995-10-10 | 1998-03-10 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US5791223A (en) * | 1995-07-13 | 1998-08-11 | Midwest Rail Inc. | Angled power saw for railroad rails |
US6002896A (en) * | 1996-02-27 | 1999-12-14 | Canon Kabushiki Kaisha | Process cartridge and electrophotographic image forming apparatus |
US6182548B1 (en) * | 1995-10-10 | 2001-02-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US6758122B2 (en) * | 2002-09-26 | 2004-07-06 | P&F Brother Industrial Corporation | Guard and control assembly for a compound miter saw |
US6971297B1 (en) * | 1995-10-10 | 2005-12-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
-
2008
- 2008-03-25 TW TW097110643A patent/TWI388436B/en not_active IP Right Cessation
- 2008-05-06 US US12/149,626 patent/US20090242687A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1746053A (en) * | 1926-07-16 | 1930-02-04 | Jr Thomas B Rice | Safety guard |
US1911812A (en) * | 1932-08-31 | 1933-05-30 | Dasenbrock John | Guard attachment for wringers |
US2650569A (en) * | 1951-11-29 | 1953-09-01 | Robert T Adkins | Copyholder |
US4318324A (en) * | 1980-09-22 | 1982-03-09 | Rock Mill, Inc. | Cutting machine with guard for cutting blade |
US4462677A (en) * | 1981-06-22 | 1984-07-31 | Canon Kabushiki Kaisha | Image formation apparatus using a process unit with a protective cover |
USD275015S (en) * | 1981-09-09 | 1984-08-07 | Machinefabriek Bewo B.V. | Protective hood for a circular saw |
US4799416A (en) * | 1987-04-03 | 1989-01-24 | Hitachi Koki Company, Ltd. | Guard-moving system in a cutting apparatus |
US5090085A (en) * | 1988-01-26 | 1992-02-25 | Ez Paintr Corporation | Paint roller having adjustable spatter shield |
US5153640A (en) * | 1990-09-27 | 1992-10-06 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus having a recording unit detachably assembled therein with a selectively opened portion |
US5791223A (en) * | 1995-07-13 | 1998-08-11 | Midwest Rail Inc. | Angled power saw for railroad rails |
US5724875A (en) * | 1995-10-10 | 1998-03-10 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US6182548B1 (en) * | 1995-10-10 | 2001-02-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US6971297B1 (en) * | 1995-10-10 | 2005-12-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US6002896A (en) * | 1996-02-27 | 1999-12-14 | Canon Kabushiki Kaisha | Process cartridge and electrophotographic image forming apparatus |
US6758122B2 (en) * | 2002-09-26 | 2004-07-06 | P&F Brother Industrial Corporation | Guard and control assembly for a compound miter saw |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10106348B2 (en) * | 2015-11-05 | 2018-10-23 | Canon Kabushiki Kaisha | Supply unit and image forming apparatus |
US10457507B2 (en) * | 2015-11-05 | 2019-10-29 | Canon Kabushiki Kaisha | Supply unit and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
TW200940357A (en) | 2009-10-01 |
TWI388436B (en) | 2013-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KINPO ELECTRONICS, INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, YING-CHIEH;CHIANG, JUNG-TAI;REEL/FRAME:020966/0385 Effective date: 20080424 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |