WO2009021391A1

WO2009021391A1 - Manually transportable carrier

Info

Publication number: WO2009021391A1
Application number: PCT/CN2008/001158
Authority: WO
Inventors: Henglin Xiao
Original assignee: Wuxi Kipor Power Co., Ltd
Priority date: 2007-08-16
Filing date: 2008-06-16
Publication date: 2009-02-19
Also published as: CN100512709C; CN101103855A

Abstract

A manually transportable carrier includes an object stage (1), a pull rod mechanism (2) and a wheel mechanism (3). The pull rod mechanism (2) is installed under the object stage (1). The wheel mechanism (3) is installed on the unpushable end of the pull rod mechanism (2). Several stabilizers (4) are fixed under the object stage (1).

Description

Portable carrier moving device

The invention relates to a portable carrier moving device, belonging to the technical field of manual vehicles.

Background technique

A drawbar for a luggage of a pulley is disclosed in the document of Chinese Patent Publication No. CN2202430. The utility model comprises an outer tube with a threaded section which can be connected with the box body; an inner tube which is fixed at the top with the handle and is looped inside the outer tube; a set installed between the inner and outer tubes comprises a radial through hole on the outer tube, inside a positioning device for the ball on the tube wall and the conical plunger with the bracket in the inner tube; one set includes a spring fixed at both ends thereof on the plunger and the inner tube, and fixed to the plunger The center rod, the adjustment rod connected to the center rod, and the adjustment device that can limit the amount of movement of the center rod.

The conical plunger with a pallet for squeezing or releasing the ball positioning described in this document lacks a configuration on the pallet that restricts the circumferential displacement of the ball relative to the axis of the tube, so that the ball rolls down to the pallet In the upper case, it is possible that the radial hole is not allowed due to the occurrence of the circumferential displacement, thereby losing the function of restoring the positioning. In addition, in the resetting method selected by the technical solution in which the tension spring rebounds, the hook-shaped connecting portion must be rolled at both ends of the tension spring, and at the same time, the spring and the tension spring are required to be formed on the parts connected with the tension spring. The corresponding connection structure of the connecting portion is complicated in manufacturing process and is not easy to assemble.

In addition, the Chinese Patent Publication No. CN2544579 also discloses an improved structure of the locking tip of the trunk pull rod, wherein the springs of the locking device in the drawbar are arranged perpendicular to the direction of movement of the handle, and a lateral force is applied to the latching tip thereof. To create a blocking action. The technical solution structure is relatively complicated, the spring is arranged laterally, and the assembly process is poor.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned deficiencies and to provide a portable carrier moving apparatus which is simpler in manufacturing and assembly processes and more reliable in use.

The main solution of the invention is achieved in this way:

The invention mainly comprises a stage, a rod mechanism and a roller mechanism. The characteristic rod mechanism is mounted under the stage, and the roller mechanism is mounted at an end of the rod mechanism that cannot be pulled, and the legs are fixed under the stage. When the object is placed in a flat state, it is completely supported by the legs fixed under the stage. The wheel is in a floating state with no load. When it is necessary to move, the rod of the rod mechanism can be pulled out and lifted up to form a tilt supported by the wheel. State, easy to push and pull movement.

The drawbar mechanism is composed of a support tube, a drawbar, a drawbar handle, a positioning hoop, a push rod, a positioning sliding sleeve, The positioning shaft, the positioning steel ball and the spring are composed, the pull rod is inserted into one end of the support tube, the pull rod is fixed with the positioning sliding sleeve, the positioning sliding sleeve is provided with a positioning shaft, the spring is set on the positioning shaft, and one end of the spring is pressed on the end surface of the positioning sliding sleeve The positioning shaft is connected with the push rod, the steel sleeve hole is opened on the positioning sliding sleeve, the steel ball is arranged in the steel ball hole, the handle of the pull rod is connected with the pull rod, and the positioning hoop is caught between the support tube and the pull rod.

The pull rod in the drawbar mechanism may be a nested multi-section tie rod.

The handle of the lever is composed of a handle seat, a handle cover, a pressing slider, a compression spring and a self-tapping screw. The handle seat has two symmetrically arranged screw holes, and the self-tapping screw passes through the screw hole to move the handle seat and the handle The cover is connected, the rolling slider is accommodated therein, and the spring sliding seat is provided with a spring seat, and the two ends of the compression spring are respectively supported on the spring seat. The handle seat has a stepped hole at both ends, and the stepped hole has a pull rod positioning hole on the side.

The support tube is respectively provided with a lower card hole and an upper card hole, and at least one card hole may be added between the two holes.

The roller mechanism is composed of a wheel, a wheel frame, an axle, a bayonet and a positioning retaining ring. The wheel carrier is provided with two parallel mounting holes perpendicular to the axis of the axle, the inner diameter of the hole and the outer diameter of the support pipe. the same.

The two outer ends of the mounting holes arranged in parallel and perpendicular to the axis of the axle are provided with bolt holes coaxial with the parallel holes.

The pull rod mechanism and the legs are respectively detachably fixed under the stage, and the roller mechanism is detachably mounted at one end of the rod mechanism.

The positioning steel ball in the pull rod mechanism is mounted on the side of the upper side of the pull rod.

The pull rod is provided with a hollow screw, and a through hole is arranged on the axis, and the through hole can pass through the push rod.

The present invention has the following advantages over the prior art:

1. Since the tie rod mechanism is arranged on the lower side of the stage, the whole device structure is compact and easy to carry when the pull rod is fully folded and reset.

2. Reasonable cooperation between the pull-pull rod mechanism and the single-axis two-wheel roller mechanism makes the movement and steering of the whole set flexible and convenient and saves manpower.

3. The spring disposed inside the tie rod and having the axis coincident with the axis of the pull rod, and the scheme of unlocking by the gravity of the steel ball itself make the structure of the pull rod mechanism simple and practical.

4. The roller mechanism and the tie rod mechanism are assembled and fixed by the inner hole of sufficient length and the outer cylindrical surface, and have strong anti-bending load capacity, so that the work of the roller mechanism is more stable and reliable. 5. The detachable fixing method makes the maintenance operation of the tie rod mechanism or the roller mechanism more convenient.

6. The positioning rod is used for circumferential positioning between the tie rod and the handle of the tie rod. The hollow screw is used for fixing, which not only makes the structure strong and durable, but also ensures the correct assembly position between the positioning steel ball and the positioning card hole.

7. In this technical solution, except for a small number of injection molded parts such as handle, bottom plate and wheel frame, most of the parts and parts are composed of a rotating body, a rotating surface and a plane. The manufacturing process is simple and convenient for mass production. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the posture of a drawbar after the article W is loaded and in a horizontal position. Fig. 2 is a schematic view showing the posture of the wheel on the ground after the article W is loaded and picked up.

Figure 3 is a schematic view of the bottom structure as seen from the bottom of the present invention.

Figure 4 is a side elevational view of the structure of the present invention as seen from the horizontal direction.

Figure 5 is a view taken along the line K in Figure 4 of the present invention.

Figure 6 is a view taken along the line H in Figure 4 of the present invention.

Figure 7 is a partial view I of Figure 3 of the present invention, that is, a schematic view of the connection structure of the handle and the tie rod. Figure 8 is a cross-sectional view taken along line A-A of Figure 3 of the present invention.

Figure 9 is a schematic illustration of the tie rod assembly of the present invention.

Figure 10 is a schematic view showing the combination of the handle of the drawbar of the present invention.

Figure 11 is a schematic view showing the assembled assembly of the wheel and the axle of the roller mechanism of the present invention.

Figure 12 is a perspective view showing the mounting of the shaft pin according to the outer end of the wheel of Figure 10 of the present invention.

Figure 13 is a cross-sectional view showing the B-B removal of Figure 9 of the present invention.

Figure 14 is another alternative construction of the B-B section of Figure 9 of the present invention.

Figure 15 is a cross-sectional view showing the C-C of the ejector pin holder 12 in Fig. 3 showing the C-C cross-sectional structure of the shank holder 12.

detailed description

The invention will be further described below in conjunction with the embodiments of the drawings:

The invention comprises a stage 1, a wheel end fixing seat 11, a shank end fixing seat 12, a baffle 13, a tie rod mechanism 2, a support tube 21, a nut 21a, a bolt hole 21b, a lower card hole 21c, an upper card hole 21d, and a drawbar 22, ring nut 22a, circumferential positioning hole 22b, pressing point 22c, lever handle 23, handle seat 23a, handle cover 23b, rolling slider 23c, spring 23d, self-tapping screw 23e, stepped hole 23f, blind hole 23g , tie rod positioning hole 23h, positioning hoop 24, push rod 25, positioning sleeve 26, steel ball hole 26a, positioning shaft 27, positioning cylinder 27a, release ring groove 27b, positioning steel ball 28, spring 29, pin 210, Roller mechanism 3, wheel 31, wheel carrier 32, axle 33, shaft pin 34, positioning collar 35, leg 4, bolt 5, Nut 6, bolt 7, set screw 8, hollow screw 9 and so on.

As shown in Fig. 1 and Fig. 2, the present invention is mounted on the lower surface of the stage 1 by means of a tie rod mechanism 2. The pull rod mechanism 2 has an extractable pull rod 22 at one end and a roller mechanism 3 at the other end, and the stationary flat load state. The support is supported by the legs 4 fixed under the stage 1. At this time, the wheel 31 is in a suspended state and is not subjected to force. When it is necessary to move, the tie rod 22 of the tie rod mechanism 2 can be pulled out and lifted up to form a tilted state supported by the wheel 31. Easy to push and pull movement.

As shown in FIG. 3 and FIG. 4, the drawbar mechanism 2 has two sets of inner and outer sleeves arranged in parallel and having the same structural form. The outer part is the support tube 21, the inner part is the pull rod 22, and the one handle 23 can make the two pull rods 22 The extraction ends are connected together. Correspondingly, two sets of tie rod support seats are arranged in parallel along the longitudinal direction of the lower stage of the stage 1, each set consisting of two front and rear seat bodies, respectively a wheel end fixing seat 11 and a shank end fixing seat 12, both of which are open a seat hole adapted to the outer diameter of the support tube 21 to enable the support tube 21 to slide therein, the two holes have a common axis, and the seat hole of the wheel end mount 11 has an axis parallel to the plane of the stage 1 and the seat hole a bolt hole intersecting the axis, the support tube 21 corresponding to the bolt hole of the wheel end fixing seat 11 at the mounting position, and a bolt hole 21b coaxial with the bolt hole and having the same diameter and transversely extending the support tube 21, The bolt 5 is fastened through the corresponding bolt hole, and is fastened by the nut 6 on the other side of the wheel end mount 11 to fix the support tube 21 and the stage 1 together, so that the support tube 21 is opposite to the stage 1 Neither axial sway nor circumferential rotation can occur. The end surface of the support tube 21 after the installation is aligned with the end surface of the shank holder 12, and the other end of the support tube 21 extends out of the wheel end. The mount 11 is at a distance. The end of the extension has a welded nut 21a which will serve as a mounting attachment point for the roller mechanism 3.

As shown in FIG. 3 and FIG. 8 : on the frame 32 of the roller mechanism 3 corresponding to the support tube 21 , there are two parallel arranged axes whose axes are perpendicular to the axle 33 and whose inner diameter is the same as the outer diameter of the support tube 21 . The hole can be sleeved into the corresponding matching portion of the support tube 21, and the distance between the two parallel holes is the same as the distance between the two support tubes 21. The effective matching length of the hole is larger than the outer diameter of the support tube 21 but smaller than the tube extension The length of the end of the wheel end fixing seat 11 , the other end of the hole on the wheel frame 32 has a bolt hole, the outer end surface of the bolt hole is a plane perpendicular to the axis of the hole, and the diameter of the bolt hole is slightly larger than the support tube 21 The outer diameter of the thread of the nut 21a welded in the hole. During installation, a pair of parallel holes of the wheel frame 32 are sleeved into the segment of the two support tubes 21 which are mounted at the correct position and protrude from the wheel end fixing seat 11, and are bolted into the bolt holes on the wheel frame, respectively The nut 21a at the end of the two support tubes 21 is screwed. The length of the hole is short and the length of the support tube 21 is long, so that the end of the support tube 21 is pressed against the inner plane of the bolt hole on the wheel frame 32, so that the wheel frame 32 and the stage 1 are not Between the wheel end mounts 11 The raw extrusion ensures that the wheel end mount 1 1 is not subjected to an additional load, thereby avoiding its early failure. As shown in FIG. 15, the shank end fixing seat 12 has an inner hole on the side away from the wheel end fixing seat 1 1 , and the aperture of the shoulder allows the rod 22 to pass therethrough, but is mounted on the mouth of the support tube 21 and The positioning hoop 24 sleeved on the outer circumferential surface of the tie rod 22 cannot pass, and the positioning hoop 24 is prevented from falling off. The positioning hoop 24 serves to eliminate the radial gap between the support tube 21 and the tie rod 22, and also acts as a seal to prevent dust from entering.

As shown in Fig. 9, the drawbar mechanism 2 is composed of a support pipe 21, a tie rod 22, a drawbar handle 23, a positioning hoop 24, a push rod 25, a positioning slide 26, a positioning shaft 27, a positioning steel ball 28, a spring 29 and a pin 210. At one end of the pull rod 22 inserted into the support tube 21, the pull rod 22 is fixed with the positioning sliding sleeve 26 fitted therein by a pressing method, and a pressing point 22c is formed on the pull rod 22 (so-called pressing, that is, a conical shape) The hard tool of the head impacts the two parts of the set together on the surface of the thin-walled part outside, causing the deformation of the recess to fix the two parts together, and the steel of the positioning sleeve 26 is open on both sides. The ball hole 26a (the processing technique is good and the mounting is not divided anyway), and the steel ball 28 is mounted in the steel ball hole 26a on the upper side. The positioning sleeve 26 is further provided with a positioning shaft 27. The small end of the positioning shaft 27 slidably passes through the guiding hole of the positioning sliding sleeve 26 in the direction of the lever handle 23. The small end of the positioning shaft 27 has a shaft axis passing through the shaft axis. The fork has a pin hole perpendicular to the direction of the fork, the pin hole axis perpendicularly intersects the axis of the positioning shaft 27, a spring 29 is loosely sleeved on the outer cylindrical surface of the positioning shaft 27, and one end of the spring 29 is pressed On the end face of the positioning sleeve 26, the other end is limited by a pin 210 that is inserted into the pin hole of the small end of the positioning shaft 27. At this time, the spring 29 has a certain amount of pre-compression and maintains a rebound potential energy. The end of the push rod 25 away from the handle 23 of the pull rod has a flat section structure, the thickness of which is slightly smaller than the width of the small end of the positioning shaft 27, and the flat section is also provided with a pin hole, and the flat section is inserted into the small end of the positioning shaft 27. In the fork, the pin holes of the two correspond exactly, and the pin 210 passes through the pin hole to connect the positioning shaft 27 with the push rod 25.

Figure 10 shows the structure of the lever handle 23. The handle seat 23a is closely coupled with the peripheral end of the handle cover 23b, and the rolling slider 23c is accommodated therein. The handle seat 23a has two symmetrically arranged screw holes. A spring seat is further disposed at the center of the surface symmetry, and two cylindrical laps are disposed in the handle cover 23b relative to the screw hole position, and the self-tapping screw 23e is screwed through the screw hole to the cylindrical lap. The handle seat 23a is fixedly coupled to the handle cover 23b. The cylindrical lap has the function of guiding the column in addition to the self-tapping screw 23e. The squeezing slider 23c has two guiding holes and the guiding column at corresponding positions. Suitably, the relationship between the two ensures that the rolling slider 23c is stably reciprocated in the direction in which it is guided. Opposite the spring seat at the center of the handle base 23a, the sliding slider 23c The inner center position also has a spring seat. The two ends of a compression spring 23d are respectively supported on the two spring seats, and the elastic force can keep the rolling slider 23c and the adjacent parts from becoming loose. It can ensure that the operator can comfortably press it with his fingers. The stepped holes 23f at both ends of the handle seat 23a slidably fit the end of the pull rod 22, and the stepped hole 23f has a pull rod positioning hole 23h on the side for circumferential positioning of the pull rod 22. The pressing slider 23c has blind holes 23g at both ends thereof, and the end portion of the push rod 25 can be placed therein, and pressing the pressing slider 23c can push the push rod 25 to generate an unlocking action.

As shown in Fig. 5 and Fig. 7, the connection structure of the handle 23 and the tie rod 22 is shown. When installing, firstly, the end of the pull rod 22 is sleeved into the stepped hole 23f of the handle seat 23a, and the pull rod positioning hole 23h on the pull rod handle seat 23a is aligned with the circumferential positioning hole 22b on the pull rod 22, and tightened by the set screw 8. The pull rod 22 is circumferentially positioned, and the pull rod 22 is provided with a hollow screw 9 having a through hole on the axis thereof, the through hole can accommodate the push rod 25 passing therethrough, and the stepped hole 23f passing through the handle seat 23a is small. The hole is screwed onto the ring nut 22a to fasten the handle seat 23a to the tie rod 22.

In the working state of the generator set, the positioning cylinder 27a is pressed against the positioning steel ball 28 so as to be caught in the lower card hole 21c, and the pull rod 22 is held in the stowed position. When the pull rod 22 is required to be pulled, the pressing slider 23c on the handle 23 is manually pressed to push the push rod 25, and the positioning shaft 27 is moved in the positioning sleeve 26 through the pin 210, when the two are relatively moved to the appropriate position, When the positioning cylinder 27a is out of contact with the positioning steel ball 28 and the release ring groove 27b is opposite to the positioning steel ball, the steel ball falls from the lower hole 21c into the ring groove by its own gravity, and between the support pipe 21 and the tie rod 22 The locked state is released, and the drawbar 22 can be withdrawn at this time. When the pressing slider 23c is released during the drawing, the restoring force of the spring 29 causes the positioning shaft 27 to have a tendency to return to the original position, and the conical bevel of the release ring groove 27b pushes the steel ball 28 outward, but due to the steel ball 28 is restrained by the inner surface of the steel ball hole 26a and the support tube 21, and the relative sliding between the tie rod 22 and the support tube 21 is continued until the steel ball moves to oppose the upper card hole 21d, and the restoring force of the spring 29 is made The steel ball 28 is ejected upward into the upper card hole 21d, the lock is re-established, and the relative position between the support tube 21 and the tie rod 22 is fixed again. When the lever mechanism 2 needs to be closed, the above process can be reversed as long as the slider 23c is pressed.

When assembling the tie rod mechanism 2 to the bottom plate 6, it is necessary to note that the positioning steel ball 28 must be placed on the upper side when it is in the normal working position, otherwise it may be impossible to lock.

As shown in Fig. 13, the pull rod 22 has a flattened structure on the outer circumferential surface of the ring nut 22a which is connected to the tie rod handle 23, and can accommodate the screwing of the set screw 8.

As shown in FIG. 14, the ring nut 22a can also be configured to machine a threaded hole for screwing in the set screw 8 after being fixed to the tie rod 22. As shown in Fig. 11 and Fig. 12, the wheel 31 is mounted on the axle 33, and the end of the axle 33 outside the wheel 31 is provided with a pin hole perpendicular to the axle axis, and a shaft is reliably held by the bayonet 34 by its inherent elasticity. On the outside of the positioning collar 35, it is ensured that the wheel 31 does not fall off. The axle 33 is fixed to the wheel frame 32 by injection molding.

As shown in FIG. 3 and FIG. 6 : the upper surface of the stage 1 has a baffle 13 integrally formed with the stage by the roller mechanism 3 - end, and the baffle 13 can limit the object W when it is tilted. Without slipping, there are two long holes left in the baffle 13 to secure the flexible object or the strap to bind the loaded object W.

Claims

Rights request

A portable carrier moving device mainly comprising a stage (1), a drawbar mechanism (2), and a roller mechanism (3), characterized in that the drawbar mechanism (2) is mounted under the stage (1), The roller mechanism (3) is attached to the end of the tie rod mechanism (2) that cannot be pulled, and the foot (4) is fixed under the stage (1).

2. A portable carrier moving device according to claim 1, characterized in that the tie rod mechanism (2) consists of a support tube (21), a drawbar (22), a drawbar handle (23), a positioning hoop (24). ), push rod (25), positioning sleeve (26), positioning shaft (27), positioning steel ball (28), spring (29), pull rod (22) inserted into one end of support tube (21), pull rod (22 ) Fixed with the positioning sleeve (26), the positioning sleeve (26) is equipped with a positioning shaft (27), the spring (29) is set on the positioning shaft (27), and one end of the spring (29) is pressed against the positioning sleeve (26) On the end face, the positioning shaft (27) is connected to the push rod (25), the positioning sleeve (26) is provided with a steel ball hole (26a), and the steel ball hole (26a) is provided with a steel ball.

(28), the lever handle (23) is connected to the tie rod (22), and the positioning band (24) is caught between the support tube (21) and the tie rod (22).

A portable carrier moving device according to claim 1 or 2, characterized in that the tie rod (22) in the tie rod mechanism (2) may be a nested multi-section tie rod.

4. A portable carrier moving device according to claim 2, wherein said lever handle (23) is supported by a handle base (23a), a handle cover (23b), a rolling slider (23c), and a compression device. spring

(23d). Self-tapping screw (23e), two handle screw holes are arranged on the handle seat (23a), and the self-tapping screws (23e) pass through the screw holes to handle the handle seat (23a) and the handle cover (23b) The connection, the rolling slider (23c) is contained therein, and the rolling slider (23c) is internally provided with a spring seat, and the two ends of the compression spring (23d) are respectively supported on the spring seat.

A portable object moving device according to claim 3, wherein said handle base (23a) is provided with stepped holes (23f) at both ends, and the stepped holes (23f) are provided with pull rod positioning holes on the sides thereof ( 23h).

A portable object moving device according to claim 2, wherein said support tube (21) is provided with a lower card hole (21c) and an upper card hole (21d), respectively. Two card holes

Add at least one card hole between (21c, 21d).

7. A mobile unit of a generator set according to claim 1, wherein said roller mechanism (3) is comprised of a wheel (31), a wheel carrier (32), an axle (33), and a bayonet (34). Positioning retaining ring

(35) Composition, the wheel carrier (32) is provided with two parallel arranged axes perpendicular to the axle (33) The mounting hole in the line direction has the same inner diameter as the outer diameter of the support tube (21).

A portable object moving device according to claim 7, wherein said two parallel-arranged outer ends of the mounting holes perpendicular to the axial direction of the axle (33) are coaxial with said parallel holes. Wire bolt holes.

A portable object moving device according to claim 1, characterized in that the tie rod mechanism (2) and the legs (4) are detachably fixed under the stage (1), respectively, and the roller mechanism ( 3) Removably attached to one end of the tie rod mechanism (2).

10. A portable carrier moving device according to claim 1 or 2, characterized in that the positioning steel ball (28) in the tie rod mechanism (2) is mounted on the side of the upper side of the tie rod.

11. A portable object moving device according to claim 1, wherein said pull rod mechanism (2) has a hollow screw (9) having a through hole in its axis, the through hole being capable of receiving a push rod (25) Pass through it.

A portable carrier moving device according to claim 1 or 7, characterized in that the roller mechanism (3) is further mountable on the stage (1).