KR102216944B1 - Pumping device for vehicle seat - Google Patents

Abstract

The present invention relates to a pumping device that adjusts the height of a vehicle seat, and provides a ratchet gear type pumping device that can improve the user's handling sensibility and durability of the device according to excellent response and minimized operating loss. have. The present invention for this purpose is a fixed cover 10 having an inner peripheral surface; A brake unit 20 that is rotatably installed on the inner circumferential surface of the fixed cover and suppresses rotation transmitted from the shaft 21; And when the rotational force is input through the lever, the shaft 21 coupled to the brake unit 20 is rotated while releasing the braking force of the brake unit 20, and when the rotational force through the lever is removed, the brake unit 20 In the pumping device comprising a; clutch unit 30 returns to the initial position while disconnecting the connection; The clutch unit 30 includes a sector plate 31 connected to the brake unit 20 and having a sector gear 312 formed on an inner circumferential surface thereof; A lock guide that is rotatably inserted and mounted on a rotation support part 235 formed on one side of the brake unit 20, and has an arc-shaped guide groove 330 on the other side of which both open ends face the sector gear 312 (33); A lock plate 34 having a shape corresponding to the guide groove 330 so as to be inserted and mounted in the guide groove 330, and at both ends of the lock plate 34 having a lower size gear 343 coupled with the sector gear 312; And a control plate 36 connected to the lever and the lock plate 34 and configured to be elastically rotated and supported from the fixed cover 10.

Description

Pumping device for vehicle seat}

The present invention relates to a pumping device for adjusting the height of a vehicle seat, and in particular to a ratchet gear pumping device capable of satisfying excellent operability and rigidity.

In general, a height adjustment device applied to a vehicle seat has a link unit at the bottom that moves the seat up and down according to the operation of the occupant, and this link unit is the height of the seat by rotation of a height adjustment device operating lever provided on one side of the seat. Is adjusted.

This height adjustment device transmits the operating force of the operating lever to the link unit to adjust the height of the seat, and is a device for fixing the position of the link unit to fix the height-adjusted seat, and connects the operating lever and the link unit. A unit with clutch and brake functions on the shaft is required.

As an example, in recent years, the application of a so-called pumping device to adjust the height of the seat by repeatedly operating the operation lever up and down is common.

Various types of devices are used for the pumping device according to its operation method, and among them, there is a ratchet gear type pumping device.

The ratchet gear type pumping device includes a brake unit comprising an assembly of cams, rollers, and elastic members to suppress rotation of a shaft connecting a link unit and a lever provided at the bottom of the seat, and when a rotational force is input through the lever, the brake unit It includes a clutch unit consisting of an assembly such as a sector plate, a lock plate, a control plate, and a return spring to return to the initial position by blocking the connection with the brake unit when the braking force is released to rotate the shaft and the rotational force through the lever is removed. It is composed by

Through this, the height-adjusted seat is fixed while supporting the rotation of the shaft through a cam supported by the roller in normal times. When the lever bracket combined with the lever is rotated to adjust the height of the seat, the lock plate with the low size gear is combined with the sector gear to rotate the sector plate, and the rotating sector plate is combined with the cam shaft while removing friction from the roller. The height of the seat is adjusted while rotating the shaft. When the rotational force applied to the lever is removed, the clutch unit returns to its initial position by the restoring force of the return spring.

However, the ratchet gear type pumping device inevitably has an operating clearance at the connecting parts such as shaft and cam and roller, roller and sector plate, sector plate and lock plate, lock plate and control plate, which are components that transmit or block rotational force. It should be set, but due to the gap between these components, impact noise is generated between components, and due to the decrease in responsiveness, which is weighted by the cumulative tolerance, there are still points on operation loss, handling sensibility, and durability. do.

In addition, in order to satisfy the recent rise in weight reduction of vehicle parts, the number or size of applied parts is limited. In order to solve the above-described problems, remarkable structural improvement of conventional devices is required.

Literature 1. Korean Registered Patent Publication No. 10-1421927 (2014.06.27 announcement)

Accordingly, the problem to be solved by the present invention is to provide a pumping device that enables a more robust and immediate power transmission and interruption by improving the operation structure of the lock plate coupled with the sector plate.

The present invention for achieving the above object is a fixed cover 10 consisting of an inner cover 11, an outer cover 12 having an inner circumferential surface and coupled to the inner cover; A brake unit 20 that is rotatably installed on the inner circumferential surface of the fixed cover and suppresses rotation transmitted from the shaft 21; And when a rotational force is input through the lever bracket, the shaft 21 connected to the brake unit 20 is rotated while releasing the braking force of the brake unit 20, and when the rotational force through the lever bracket is removed, the brake unit 20 In the pumping device comprising a; clutch unit 30 returns to the initial position while disconnecting the connection; The clutch unit 30 may include a sector plate 31 connected to the brake unit and having a sector gear 312 formed on an inner circumferential surface thereof; A lock guide which is rotatably mounted on a rotation support 235 formed on one surface of the cam 23 constituting the brake unit, and is provided with guide grooves 330 having both open ends facing the sector gear on the other surface ( 33); A lock plate 34 having a shape corresponding to the guide groove so as to be inserted into the guide groove, and having low size gears 343 coupled to the sector gears at both ends; And a control plate 36 connected to the lever bracket and the lock plate and configured to be supported by rotation from the outer cover.

At this time, in the above-described pumping device, a disk spring that is interposed between the rotation support portion 235 of the cam 23 and the lock guide 33 to elastically support the lock guide 33 from the rotation support portion 235 in the radial direction ( 32) can be included.

In this case, the disk spring 32 has a thin plate structure, is inserted and mounted on the inner surface of the rotation support part 235, and has an insertion fixing part in the center to be coupled with the mounting groove 334 formed in the lock guide 33 321 may be formed to protrude, and a plurality of elastic wing portions 323 extending in the circumferential direction to impart elastic force in the radial direction may be formed on the outer circumferential surface.

Meanwhile, the pumping device described above includes a disk guide 35 for guiding the return rotation of the lock plate 34 with the lock plate 34 separated from the sector gear 312 of the sector plate 31. I can.

In this case, the disk guide 35 has a thin plate structure, is coupled to the inner side of the outer cover 12 so as to be in close contact with one side of the sector plate 31, and guides an inner diameter smaller than the inner diameter of the sector gear 312 on the inner circumferential surface. The feathers 351 may be formed while maintaining equal spacing.

Meanwhile, the above-described pumping device includes a return spring 38 coupled to the inside of the outer cover 12 to elastically support the control plate 36 and a spring guide 37 fixedly supporting the disk guide 35 It can be configured.

The present invention improves the operation structure of the lock plate that is geared to the sector plate, thereby enabling solid and immediate power transmission and blocking, thereby improving the user's operation sensibility and the durability of the device according to the excellent response and minimized operation loss. Can be improved.

In particular, by minimizing the cumulative tolerance leading to cam and roller, roller and sector plate, sector plate and lock plate, lock plate and control plate, more excellent response can be satisfied.

1 is a perspective view of a pumping device according to the present invention.
2 is an exploded perspective view of a pumping device according to the present invention.
3 is a rear perspective view of FIG. 2.
Figure 4 is a perspective view showing the configuration of a cam according to the present invention.
5 is a plan view showing an operating state of the brake unit according to the present invention.
6 is an exploded perspective view showing the configuration of a lock guide and a lock according to the present invention.
7 is a perspective view showing the configuration and installation state of the disk spring according to the present invention.
8 is a perspective view showing the configuration of a disk guide according to the present invention.
9 is a plan view showing an operating state of the lock before the operation in which the rotational force is removed according to the present invention.
10 is a plan view showing an operating state of the lock when the rotational force according to the present invention is transmitted.
11 is a plan view showing an operating state of the lock while the rotational force according to the present invention is transmitted.
12 is a plan view showing an operating state of the lock when the rotational force according to the present invention is removed.
13 is a partial perspective view showing the configuration and installation state of a control plate, a return spring, a spring guide, and a lever bracket according to the present invention.

Features and effects of the present invention described or not described above will be more apparent through embodiments of the present invention with reference to the accompanying drawings.

1 to 3 are views showing components of a pumping device according to the present invention.

The pumping device according to the present invention largely includes a fixed cover 10, a brake unit 20, and a clutch unit 30.

The fixed cover 10 is fixedly coupled to the seat and fixedly supports the components constituting the pumping device mounted therein, and fixedly supports the concentricity of the components through the inner circumferential surface, and is configured through the facing inner and outer surfaces. It fixes the axial assembly position of the element. This fixed cover 10 includes an inner cover 11 and an outer cover 12.

The inner cover 11 has a plate structure, and a rotation support part for rotatably supporting the brake unit 20 while passing through the shaft 21 is provided at the center, and a fixing part coupled to the outer cover 12 at the circumference It is equipped.

The outer cover 12 has a cylindrical box structure to have an inner circumferential surface, and a rotation support part rotatably supporting the clutch unit 30 connected to a lever (not shown) is provided in the center, and a rotation support part is provided at the periphery of the rotation support part. A fixing hole 121 for a spring guide is provided, and a fixing part is provided in the circumferential part to face the fixing part of the inner cover 11.

The brake unit 20 connects the shaft 21 connected to the link unit provided on the seat and the clutch unit 30, and when the rotational force transmitted from the clutch unit 30 is removed, the shaft 21 connected to the link unit It suppresses the rotation transmitted from the clutch unit 30, and transmits the rotational force toward the shaft 21 when the rotational force is input from the clutch unit 30. The brake unit 20 includes a shaft 21, a cam 23, a roller 25, and an elastic member 27.

The shaft 21 is gear-connected to the link unit through a pinion formed at one end, and the other end is axially coupled to the cam 23.

Figure 4 is a view showing the configuration of the cam, Figure 5 is a view showing the operating state of the brake unit.

The cam 23 has a shaft 21 and a shaft-coupled center boss 231 rotatably coupled to the rotational support of the inner cover 11, and the outer circumferential surface is rotatable on the inner circumferential surface of the outer cover 12. The support protrusion 233 is formed to protrude. In addition, a rotation support portion 235 recessed to accommodate the clutch unit 30 is provided on one surface facing the opposite side of the inner cover 11.

A mounting groove 237 having a shape corresponding to the elastic member 27 is provided on the outer circumferential surface of the interspace formed by the support protrusion 233 so that the elastic member 27 is mounted, and the mounting groove 237 is interposed therebetween. On both sides, the inclined friction surfaces 238 on which the rollers 25 are contacted and supported are provided to form a symmetrical structure.

The inclined friction surface 238 is formed to be inclined radially outwardly away from the mounting groove 237, so that the roller 25 rides the inclined friction surface 238 by the restoring force of the elastic member 27. do.

At this time, the power transmission protrusion 310 of the clutch unit 30 is inserted into the space opposite to each of the rollers 25. Any of the power transmission protrusions 310 selected among these power transmission protrusions 310 takes a shape located in the space between the roller 25 and the support protrusion 233.

Referring to Figure 5 (a), when the rotational force is removed from the power transmission protrusion 310 of the clutch unit 30, the roller 25 elastically supported by the elastic member 27 rises on the inclined friction surface 238 A friction force is generated between the friction surface 238 and the inner peripheral surface of the outer cover 12, and rotation of the cam 23 is suppressed from this friction force.

Referring to FIG. 5(b), when the rotational force is input from the power transmission protrusion 310 of the clutch unit 30, the power transmission protrusion 310 overcomes the restoring force of the elastic member 27 and removes the roller 25. As the pressure is applied, the friction force generated between the inclined friction surface 238 and the inner circumferential surface of the outer cover 12 is removed.

Referring to FIG. 5(c), the cam 23 is rotated as an arbitrary power transmission protrusion 310 presses the support protrusion 233 from the continued rotational force of the power transmission protrusion 310. )

With the support protrusion 233 therebetween, one roller generates a one-way braking force of the cam 23 while transmitting a one-way rotational force, and the other roller generates an opposite direction braking force of the cam 23 while an opposite rotational force Will be delivered.

In the illustrated embodiment, the elastic member 27 has a cylindrical shape, but may also have a cross-sectional shape such as a square or an ellipse. The material may also be made of a resin material having its own elasticity, such as rubber or urethane, as well as a metal material forming a hollow tube structure to impart elasticity.

3 and 4, the clutch unit 30 connects the above-described brake unit 20 and the lever, and when a rotational force is input from the lever bracket 39 connected to the lever, the braking force of the brake unit 20 When the rotational force is removed from the lever bracket 39, the connection with the brake unit 20 is cut off to maintain the braking force. The clutch unit 30 includes a sector plate 31, a lock guide 33, a lock plate 34, a control plate 36, a spring guide 37, and a return spring 38.

The sector plate 31 connects the brake unit 20 and the lock plate 34, and forms a plate structure and is in close contact with one surface of the cam 23, and the support protrusion 233 of the cam 23 and the outer circumferential surface thereof A power transmission protrusion 310 that extends bent to be inserted into the space between the rollers 25 is formed, and a sector gear 312 is formed on the central inner circumferential surface.

6 is a diagram showing a configuration of a lock guide and a lock.

The lock guide 33 guides and supports the lock plate 34, and is rotatably inserted into the rotation support part 235 formed on one side of the cam 23, and an arc-shaped guide groove 330 on the opposite side. The guide block 332 is protruded to form. Both ends of the guide groove 330 extend to the outer peripheral surface of the lock guide 33 and open toward the sector gear 312 of the sector plate 31.

The guide grooves 330 formed by the guide blocks 332 are arranged in plurality based on the center of the lock guide 33.

The lock plate 34 connects the sector plate 31 and the control plate 36, and is coupled with the sector gear 312 of the sector plate 31 according to whether or not rotational force is transmitted from the control plate 36 to reduce the rotational force. Transmission or coupling with the sector gear 312 of the sector plate 31 is spaced apart to release the rotational force.

This lock plate 34 is composed of the number and shape corresponding to the guide groove 330 of the lock guide 33, each lock plate 34 is formed with a pin 341 protruding in the central portion, locks at both ends Gear 343 is formed.

As a result, in the lock plate 34, when the rotational force through the pin 341 is removed from the control plate 36, both of the lower gears 343 are separated from the sector gear 312 of the sector plate 31. (See Fig. 9)

Here, when the rotational force is transmitted in one direction from the control plate 36 through the pin 341, the lock plate 34 moves along the arc-shaped guide groove 330 while being guided by the guide block 332 to lock one side. The gear 343 is gear-coupled to the sector gear 312 of the sector plate 31 (see FIG. 10).

Subsequently, from the continued rotational force of the control plate 36, the lock plate 34 rotates together with the lock guide 33 to rotate the sector plate 31 (see Fig. 11).

An equal support force of the lock gear 343 with respect to the sector gear 312 is satisfied through a plurality of lock plates 34 maintaining an even spacing based on the center of the lock guide 33.

7 is a view showing the configuration and installation state of the disk spring.

Meanwhile, the clutch unit 30 may include a disk spring 32.

The disk spring 32 elastically supports the lock guide 33 from the cam 23 in the radial direction, and compensates for the clearance between the cam 23 and the lock guide 33, while The lower size gear 343 performs a function of suppressing a change in the position of the lock guide 33 in the process of being geared to the sector gear 312 of the sector plate 31.

This disk spring 32 forms a thin plate structure and is inserted and mounted in close contact with the inner surface of the rotation support 235 of the cam 23, and an insertion fixing portion coupled with the mounting groove 334 of the lock guide 33 at the center 321 is formed to protrude, and the outer circumferential surface is provided with an elastic wing portion 323 extending in the circumferential direction to impart an elastic force in the radial direction. The elastic wing portion 323 maintains an equal spacing in the circumferential direction and consists of a plurality.

Eventually, the disk spring 32 is inserted into the rotational support 235 of the cam 23 with the elastic blade 323 compressed in the radial direction, and then inserted into the mounting groove 334 of the lock guide 33 to be mounted. The insertion fixing part 321 is inserted and bound and assembled.

Referring to FIG. 10, when a rotational force in one direction is transmitted to the lock plate 34 through a lever, in a state in which the disk spring 32 is excluded, the lock plate 34 is a lock guide before gear-engagement with the sector plate 31. There is a concern about the rotational action of (33), and due to this, the lock plate 34 of the lock plate 34 cannot be quickly engaged with the sector gear 312, and the incomplete gearing state overboard the sector gear 312 May occur.

However, as described above, by elastically attaching the lock guide 33 to the rotational support 235 of the cam 23 via the disk spring 32, the lock guide is locked along the guide groove 330 of the lock guide 33. In the process of moving the plate 34 and being gear-coupled with the sector plate 31, the disk spring 32 performs a function of temporarily suppressing the rotation of the lock guide 33, thereby reducing the lock plate 34 The 343 can be quickly and accurately geared to the sector gear 312 of the sector plate 31.

In this way, the disk spring 32 that temporarily suppresses the temporary flow (rotation) of the lock guide 33 during the gear coupling process of the lower gear 343 and the sector gear 312 is, after that, the sector geared with the lock plate 34 As the power transmission protrusion 310 of the plate 31 sequentially presses and rotates the roller 25 and the cam 23, it rotates interlockingly, and when the rotational force is removed from the lever, the restoring force of the return spring 38 to be described later It is rotated in the opposite direction together with the lock plate 34 from.

As shown, the elastic blade portion 323 of the disk spring 32 maintains point contact with the inner circumferential surface of the rotation support portion 235 of the cam 23, so that the lower size gear 343 and the sector gear 312 After the gear coupling is completed, a smooth rotational action in the rotation support part 235 is possible from the rotational force continuously transmitted from the lock plate 34 and rotation of the lock guide 33 is allowed.

8 is a diagram showing the configuration of a disk guide.

Meanwhile, the clutch unit 30 may include a disk guide 35.

When the rotational force through the lever is removed, the disk guide 35 serves to guide the return rotation of the lock plate 34 which returns to operation by the restoring force of the return spring 38.

This disk guide 35 forms a thin plate structure and is in close contact with one surface of the sector plate 31, and on the inner circumferential surface, a guide blade 351 having an inner diameter smaller than the inner diameter (diameter of the Addendum circle) of the sector gear 312 ) Is provided, and a fixing protrusion 353 coupled to the disk fixing groove 372 formed in the spring guide 37 is formed to protrude radially on the outer circumferential surface.

The guide blade 351 maintains an equal spacing corresponding to the rotation (rotation) stroke of the lock plate 34 and is configured in plural on the inner peripheral surface of the disk guide 35.

When the rotational force is transmitted to the lock plate 34 through the lever as shown in FIG. 10, the gear coupling of one lock plate 343 to the sector gear 312 is completed, and then the lock plate 34 continues as shown in FIG. In the rotation process, the other lower gear 343 spaced apart from the sector gear 312 moves past the upper part of the guide blade 351. Thereafter, as shown in FIG. 12, when the rotational force through the lever is removed, one lower size gear 343 of the lock plate 34 is separated from the sector gear 312 by the restoring force of the return spring 38, and at the same time, the other lower size gear In the state of being supported on the upper part of the guide blade 351, the return rotation of the lock plate 34 is made 343.

As described above, the lock plate 34 in the return operation from the disk guide 35 stably guides the lock plate 34 in a state separated from the sector gear 312 of the sector plate 31 without unnecessary clearance. It is possible to reduce unnecessary noise and interference, and prevent damage to the gear joint.

13 is a view showing the configuration and installation of the control plate, return spring, spring guide, and lever bracket.

The control plate 36 connects the lock plate 34 and the lever bracket 39, and is installed in the space between the lock plate 34 and the spring guide 37, and has a lock on one side facing the lock plate 34. A pinhole 361 connected to the plate 34 is formed, a support jaw 362 connected to the return spring 38 is formed on one side of the circumference, and a lever bracket through the rotation support portion of the outer cover 12 is formed on the other side. A lever coupling portion 363 coupled to the 39 is provided.

The pinhole 361 is a combination of each pin 341 formed on the lock plate 34, and is provided in a number corresponding to the number of the lock plate 34, and is provided in the guide groove 330 of the lock guide 33 It is formed to form a rectangular structure in the radial direction to enable the gear engagement and release operation of the lock plate 34 in.

This control plate 36 is connected to the spring guide 37 via the return spring 38.

The return spring 38 forms a structure surrounding the control plate 36, and supports ends 381 bent at both ends are provided. The both support ends 381 are respectively supported by the support jaws 362 of the control plate 36 and are supported by a stopper 371 formed on the spring guide 37.

Due to this configuration, when a rotational force is transmitted to the control plate 36 in any one direction through the lever bracket 39, the control plate 36 rotates while overcoming the restoring force of the return spring 38. When rotating in one direction and the rotational force through the lever bracket 39 is removed, the control plate 36 returns to the opposite direction by the restoring force of the return spring 38 and the lock plate 34 is rotated in the opposite direction. Return to the initial position.

The spring guide 37 is fixedly coupled to the outer cover 12, and a stopper 371 connected to the return spring 38 is protruded on one side of the inner side, and a circumference formed bent in close contact with the inner circumferential surface of the outer cover 12 A disk fixing groove 372 is formed in the portion, and a fixing tool 373 coupled to the fixing hole 121 formed in the outer cover 12 is provided on an outer side.

The spring guide 37 may be press-molded like the outer cover 12, but it is preferably injection-molded. This not only can satisfy the weight reduction, it is easy to manufacture the stopper 371 in which the control plate 36 and the return spring 38 are supported and the disk fixing groove 372 in which the disk guide 35 is caught and supported, In addition, there is an advantage of reducing the impact noise due to the compression and expansion operation of the return spring 38 interposed therein.

A series of operations for the pumping device configured as described above will be described as follows.

First, in a state in which the rotational force of the control plate 36 through the lever bracket 39 is removed, it is maintained in a position supported by the restoring force of the return spring 38.

That is, the lock plate 34 is located in the guide groove 330 of the lock guide 33 with both lower size gears 343 spaced apart from the sector gear 312. (See Fig. 9)

At the same time, the power transmission protrusion 310 of the sector plate 31 is located in a space spaced apart from the support protrusion 233 and the roller 25, and at the same time, the roller 25 elastically supported by the elastic member 27 is a cam ( Rising up on the inclined friction surface 238 of 23), a friction force is generated between the inclined friction surface 238 and the inner circumferential surface of the outer cover 12 to suppress the rotation of the shaft 21 coupled to the cam 23 . (See Fig. 5A)

Here, when the rotational force is transmitted to the control plate 36 through the lever bracket 39, the control plate 36 overcomes the restoring force of the return spring 38 and rotates the lock plate 34 while rotating in one direction.

In the initial transmission of the rotational force through the control plate 36, each lock plate 34 moves along the guide groove 330 forming an arc shape of the lock guide 33, while one of the lock plates 343 is moved to the sector plate 31 ) Is geared to the sector gear 312. (See Fig. 10)

In this gear coupling process, the lock guide 33 is elastically supported by the rotation support 235 of the cam 23 via the disk spring 32, so that the lock guide 33 interlocks with the rotation of the lock plate 34. ) Rotation is temporarily suppressed.

In this way, in a state in which one lower gear 343 of the lock plate 34 and the sector gear 312 of the sector plate 31 are gear-coupled, as the rotational force is continuously transmitted to the lock plate 34, the sector plate 31 is Rotates interlocking. (See Fig. 11)

As the sector plate 31 rotates in this way, the power transmission protrusion 310 of the sector plate 31 overcomes the elastic force of the elastic member 27 and presses the roller 25 so that the inclined friction surface 238 and the outer side The friction force generated between the inner circumferential surfaces of the cover 12 is removed. (See Fig. 5b)

Subsequently, as the power transmission protrusion 310 presses the support protrusion 233 from the continuous rotational force of the power transmission protrusion 310, the shaft 21 coupled to the cam 23 is rotated (see FIG. 5C).

On the other hand, when the rotational force applied to the control plate 36 through the lever bracket 39 is removed, the control plate 36 maintains a state supported by the restoring force of the return spring 38.

That is, as described above, the lock plate 34 returns into the guide groove 330 of the lock guide 33 with both lock gears 343 spaced apart from the sector gear 312, and the power of the sector plate 31 The transfer protrusion 310 is spaced apart from both rollers 25 and returned.

During the return operation of the lock plate 34, one lower size gear 343 of the lock plate 34 is spaced apart from the sector gear 312, and the other lower size gear 343 is supported on the upper part of the guide blade 351. In this state, the return rotation of the lock plate 34 is guided. (See Fig. 12)

Due to the sector plate 31 disconnected from the lock plate 34 in this way, the roller 25 rises on the inclined friction surface 238 of the cam 23 by the elastic force of the elastic member 27, and the inclined friction surface A friction force is generated between the 238 and the inner circumferential surface of the outer cover 12 to suppress the rotation of the shaft 21 coupled to the cam 23.

The present invention is not limited to the specific preferred embodiments described above, and anyone of ordinary skill in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications Of course, such changes are within the scope of the claims.

10: fixed cover 11: inner cover
12: outer cover 20: brake unit
21: shaft 23: cam
233: support protrusion 235: rotation support
25: roller 27: elastic member
30: clutch unit 31: sector plate
310: power transmission projection 312: sector gear
32: disk spring 33: lock guide
330: guide groove 34: lock plate
343: low size 35: disc guide
36: control plate 37: spring guide
38: return spring 39: lever bracket

Claims (6)

A fixed cover 10 consisting of an inner cover 11 and an outer cover 12 coupled to the inner cover and having an inner peripheral surface; A brake unit 20 that is rotatably installed on the inner circumferential surface of the fixed cover and suppresses rotation transmitted from the shaft 21; And when a rotational force is input through the lever bracket, the shaft 21 connected to the brake unit 20 is rotated while releasing the braking force of the brake unit 20, and when the rotational force through the lever bracket is removed, the brake unit 20 In the pumping device comprising a; clutch unit 30 returning to the initial position while disconnecting the connection,
The clutch unit 30,
A sector plate 31 connected to the brake unit and having a sector gear 312 formed on an inner circumferential surface thereof;
A lock guide which is rotatably mounted on a rotation support 235 formed on one surface of the cam 23 constituting the brake unit, and is provided with guide grooves 330 having both open ends facing the sector gear on the other surface ( 33);
A lock plate 34 having a shape corresponding to the guide groove so as to be inserted into the guide groove, and having low size gears 343 coupled to the sector gears at both ends;
A disk guide 35 for guiding the return rotation of the lock plate 34 while the lock plate 34 is separated from the sector gear 312 of the sector plate 31;
A control plate 36 connected to the lever bracket and the lock plate and configured to be supported by rotation from the outer cover;
A stopper 371 coupled to the inner side of the outer cover 12 and coupled with the return spring 38 connected to the control plate 36 is protruded on one side, and fixed formed on the outer peripheral surface of the disk guide 35 at the circumference. Including; a spring guide 37 formed with a disk fixing groove 372 coupled with the protrusion 353,
The disk guide 35 is coupled to the inner side of the outer cover 12 so as to be in close contact with one surface of the sector plate 31, and guide blades 351 having an inner diameter smaller than the inner diameter of the sector gear 312 are equally spaced on the inner circumferential surface. Pumping device, characterized in that formed in a thin plate structure to maintain.
The method of claim 1,
Pumping including a disk spring 32 interposed between the rotation support portion 235 of the cam 23 and the lock guide 33 to elastically support the lock guide 33 from the rotation support portion 235 in the radial direction device. The method of claim 2,
The disk spring 32,
It has a thin plate structure, is inserted and mounted on the inner surface of the rotation support part 235, and an insertion fixing part 321 protrudes in the center to be coupled with the mounting groove 334 formed in the lock guide 33, and the outer circumferential surface A pumping device having a plurality of elastic blades 323 extending in the circumferential direction to impart an elastic force in the radial direction. delete delete delete

Images