KR20080028088A - Pumping device for seat cushion of vehicle - Google Patents

Abstract

A pumping device for a vehicle seat cushion is provided to minimize the size and volume by forming a clutch assembly and a brake assembly integrally arranged in a line. A pumping device for a vehicle cushion comprises as follows. An outer case(10) is fixed inside a seat cushion. A lever bracket(20) is fitted to a handle lever and rotates while the handle lever is moving up and down. A clutch assembly(30) adjusts the position of the seat cushion by transmitting power to a link assembly of the seat cushion. A brake assembly(40) selectively locks the link assembly of seat cushion by the power from the clutch assembly. A connecting drum(50) interposed between the clutch assembly and the brake assembly transmits the power from the clutch assembly to the brake assembly. In addition, a cover plate(60) is attached to a rear surface of the outer case to seal the outer case.

Description

Pumping device for seat cushion of vehicle {Pumping device for seat cushion of vehicle}

1 is a perspective view of a seat cushion mounted with a handle lever for the operation of the pumping device,

FIG. 2 is a schematic conceptual view illustrating a configuration of a conventional pumping device and a pumping device according to the present invention; FIG.

3 to 6 are a perspective view and a side view of the separated perspective view and the coupled state of the pumping device according to the present invention;

7 is a cross-sectional view taken along line II of FIG. 5;

8 through 10 are partial cross-sectional views taken along lines II-II and III-III of FIG. 4, and partially taken along line IV-IV of FIG. 6;

11 and 12 are perspective views of the outer case constituting the pumping device according to the present invention,

13 is a perspective view of the lever bracket,

14 to 16 is a perspective view of the spring stopper block and the leaf spring,

17 is a perspective view of a retainer assembly and a clutch spring coupled to each other;

18 and 19 are perspective views of the clutch shaft and the clutch block,

20 to 23 are perspective views of the connecting drum and the brake drum,

24 and 25 are perspective views of the roller assembly and the brake shaft,

26 is a front view of a part for explaining a state in which the drum projection of the brake drum is coupled to the projection hole of the connecting drum,

27 is a perspective view of the cover plate.

<Description of the symbols used in the main parts of the drawing>

1a-Seat cushion 3-Handle lever

10-Outer Case 20-Lever Bracket

30-clutch means 31-spring stopper block

32-Leaf Spring 33-Retainer Assembly

34-Clutch Spring 35-Clutch Shaft

36-Clutch block 40-Brake means

41-Brake Drum 42-Roller Assembly

43-Brake shaft 50-Connecting drum

60-Cover Plate

The present invention relates to a pumping device having an improved configuration to adjust the height of the seat cushion in accordance with the body type of the vehicle occupant.

In general, the seat 1 of the vehicle is composed of a seat cushion (1a) and a seat back (1b) as shown in Figure 1, the seat cushion (1a) is configured to be height-adjustable by a pumping device, The seatback 1b is configured to be able to adjust the angle in the front-rear direction by the reclining apparatus.

The pumping device is connected to the link means of the seat cushion in the seat cushion (1a) is installed to enable power transmission, the operation is a handle lever protruding out of the seat cushion (1a) as shown in FIG. This is achieved by the UP / DOWN operation of (3).

Various types of pumping devices as described above have been developed and are currently in use, and the present applicant has also received a technology for pumping devices through the registration number 10-049313 (May 8, 2005).

Conventional pumping device corresponding to the registration number 10-049313, as shown conceptually in the left part of Figure 2, the clutch means for largely transferring the up / down operation of the handle lever to the link means of the seat cushion, the operation It consists of brake means for restraining the link means of the completed seat cushion from moving.

By the way, the conventional pumping device corresponding to the registration number 10-049313 has a disadvantage that the overall size, volume and weight is excessive because the clutch means and the brake means is configured to have a two-row arrangement structure.

Accordingly, the present invention, while conceptually shown in the right part of Figure 2 while maintaining the operating performance, the clutch means and the brake means is configured to have a single row arrangement structure to reduce the overall size, volume and weight as possible It is an object of the present invention to provide a pumping device for a seat cushion of a vehicle having an improved structure to achieve cost reduction and to improve operation noise and operation feeling.

Pumping device of the present invention for achieving the above object, the drum-shaped outer case is fixed to the inside of the seat cushion; The lever bracket is attached to the front of the outer case and is installed to be located in the inner space through the outer case while being coupled with the handle lever to rotate during the up / down operation of the handle lever. and; A clutch means accommodated in an inner space of the outer case and installed to allow elastic rotation through the lever bracket while transmitting power to the link means of the seat cushion to adjust the height of the seat cushion; While being accommodated in the inner space of the outer case is installed to have a one-row arrangement structure on the outer side of the clutch means while selectively restraining the link means of the seat cushion that the height adjustment operation is completed by receiving power from the clutch means Brake means; A connecting drum interposed between the clutch means and the brake means so as to transmit power of the clutch means to the brake means; The cover plate is padded on the open back of the outer case and coupled to seal the cover.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 to 6 are an exploded perspective view and a side view of the pumping device according to the present invention in a separated perspective view and a coupled state, FIG. 7 is a partial sectional view taken along line II of FIG. 5, and FIGS. 8 to 10 are II-II of FIG. 4. Fig. 6 is a partial cross-sectional view taken along line III-III and a cross-sectional view taken along line IV-IV of Fig. 6.

The pumping device for a seat cushion of a vehicle according to the present invention has a clutch means 30 and a brake means 40 as conceptually shown in the right part of FIG. 2 in order to reduce the overall size, volume and weight as much as possible. It is configured to have a single row arrangement.

That is, the pumping device according to the present invention, as shown in Figure 3 to 10, the drum-shaped outer case 10 is fixed to the inside of the seat cushion (1a) and the front of the outer case 10 Some sections are installed in the inner space through the outer case 10 while being padded on the other hand while being coupled with the handle lever 3 to perform the UP / DOWN operation of the handle lever 3. It is accommodated in the inner space of the rotating lever bracket 20 and the outer case 10 is installed to enable elastic rotation through the lever bracket 20 while transmitting power to the link means of the seat cushion (1a) The clutch means 30 to adjust the height of the seat cushion (1a), and is accommodated in the inner space of the outer case 10 while being installed to have a one-row arrangement structure on the outside of the clutch means 30, the clutch Height adjustment by receiving power from the means 30 The brake means 40 selectively restrains the link means of the seat cushion 1a from which the operation is completed, and the clutch means 30 and the brake means 40 are interposed between the clutch means 30 and the clutch means 30. It comprises a connecting drum 50 is installed so as to transmit power to the brake means 40, and a cover plate 60 is coupled to seal the pad on the open back of the outer case 10.

Here, the outer case 10 is a drum formed to accommodate the clutch means 30, the brake means 40 and the connecting drum 50 as an inner space, as shown in Figure 11 and 12 The part 11, the shaft hole 12 formed in the center of the said drum part 11, the several protrusion hole 13 formed along the same radius from the said shaft hole 12, and the said shaft hole 12 An arc-shaped lever hole 14 formed along a radius larger than the protrusion hole 13, a block protrusion hole 15 cut from the lever hole 14 toward the shaft hole 12, and the drum. A flange portion 16 which is bent radially from the portion 11 and is formed along the circumferential direction and is in surface contact with the cover plate 60, and a plurality of coupling holes 17 formed in the flange portion 16 and the coupling portion It is formed with the groove 18.

In addition, the lever bracket 20 has a bracket hole 21 formed in a spline shape at the center portion as shown in FIG. 13, and the coupling member is formed at the same radius from the bracket hole 21 to engage the handle lever 3. A coupling hole 22 penetrating, a bracket protrusion 23 protruding toward the outer case 10 at one portion of the outer circumferential surface and inserted into the lever hole 14, and the handle lever 3; It is formed with a lever coupling groove 24 formed in a plurality of spaced apart along the outer circumferential surface to increase the coupling force with.

On the other hand, the length (L1) connecting both ends in the circumferential direction in the lever hole 14 is formed larger than the width (D1) of the bracket projection (23).

In addition, the bracket protrusion 23 is inserted to be positioned at the center portion of the lever hole 14, and can be rotated within a range of a predetermined angle θ1 in the clockwise or counterclockwise direction according to the manipulation of the handle lever 4. Is inserted so that, the rotation angle (θ1) of the bracket protrusion 23 is preferably in the range of 15 ° to 30 °.

The clutch means 30 includes a spring stopper block 31, a leaf spring 32, a retainer assembly 33, a clutch spring 34, a clutch shaft 35, and a clutch block 36. .

As shown in FIGS. 14 and 15, the spring stopper block 31 has a protrusion hole 13 and a block protrusion hole 15 formed in the drum part 11 toward the outer case 10. A plurality of engaging projections 31a and block projections 31b, which are fitted to each other, are formed to protrude.

A rear limiting protrusion 31c extending from the block protrusion 31b and a pair of guide flanges 31d symmetrically formed at a portion of the outer circumferential surface of the rear plate toward the cover plate 60 are symmetrically formed. And a pair of spring actuating projections 31e symmetrically formed along the radius smaller than the guide flange 31d are formed.

Here, the width D2 and the thickness T1 of the block protrusion 31b are formed to have the same dimensions as the block protrusion hole 15 in the outer case 10.

The leaf spring 32 is installed to be located in a space between the drum portion 11 and the spring stopper block 31 of the outer case 10, and is bent at right angles at both ends as shown in FIG. The first and second support protrusions 32a and 32b are installed to be supported by the side surfaces of the bracket protrusion 23 and the block protrusion 31b to impart a restoring force to the rotation of the lever bracket 20.

The retainer assembly 33 is composed of a cylindrical retainer 33a and a plurality of rollers 33b coupled to the circumferential surface of the retainer 33a to allow free rotation as shown in FIG. 17.

Here, the front surface of the retainer 33a fitted into the guide flange 31d of the spring stopper block 31 is provided with a projection guide groove 33c into which the spring actuating protrusion 31e is fitted and a spring installation groove 33d. The spring stopper block 31 is formed to be continuously connected at a pair of symmetrical positions, respectively, and a part of the outer circumferential surface thereof through a locking step 33e selectively contacting both side surfaces of the rotary limiting protrusion 31c. A retainer cut surface 33f for controlling the rotation angle of the is formed.

The spring actuating protrusion 31e and the protrusion guide groove 33c are formed such that lengths L4 and L5 connecting both ends along the radial direction have the same dimensions.

In addition, the retainer cutting surface 33f is formed to be located at the outer circumferential surface of any one of the pair of protrusion guide grooves 33c.

The clutch spring 34 is composed of a pair, each of which is inserted into the spring installation groove 33d and is installed to support both ends, while the spring actuating protrusion 31e comes in contact with the rotation of the retainer 33a. It is elastically compressed and deformed by both ends.

The clutch shaft 35 extends in the radial direction from the longitudinal middle point of the shaft as shown in FIG. 18 and is located in the retainer assembly 33, and the shaft flange 35a extends in one direction of the shaft length from the shaft flange 35a. A case engaging surface 35b extending in the shaft hole 12 of the outer case 10, and extending from the case engaging surface 35b in the axial length direction to extend the bracket hole 21 of the lever bracket 20; ) And a first spline shaft (35c) to form a spline coupling, and extends in the opposite direction of the first spline shaft (35c) from the shaft flange (35a) to the second spline shaft (35d), and the first And a central hole 35e penetrating through the centers of the two spline shafts 35c and 35d.

19, the clutch block 36 is formed with a spline-shaped block hole 36a, which is coupled to the second spline shaft 35d, through the center thereof, and is engaged with the second spline shaft 35d. In this state, the outer circumferential surface making contact with the roller 33b of the retainer assembly 33 is repeatedly formed in the circumferential direction with an arc slope 36b having the highest point H2 and the lowest point L2.

As shown in FIGS. 20 and 21, the connecting drum 50 has a portion of the retainer assembly 33 in contact with an inner circumferential surface thereof so that the roller 33b of the retainer assembly 33 contacts the inner circumferential surface thereof. A drum portion 51 formed to accommodate the space, a drum hole 52 formed in the center of the drum portion 51, through which the second spline shaft 35d of the clutch shaft 35 passes, and the drum hole. A plurality of projection holes 53 formed at equal intervals from the 51a at equal intervals, a flange portion 54 formed along the circumferential direction while being bent radially from the drum portion 51, and the flange portion 54 It is formed with a plurality of flange protrusions 55 which are bent extending in the direction toward the cover plate 60 from the outer peripheral surface of the).

Here, the protrusion hole 53 is formed as a hole of the long groove formed along the radial direction.

On the other hand, the brake means 40 according to the present invention comprises a brake drum 41, a roller assembly 42 and a brake shaft 43.

First, as shown in FIGS. 22 and 23, the brake drum 41 protrudes along the same radius with respect to the spline hole 41a penetrating the central portion and the spline hole 41a, and thus the connection drum is formed. A plurality of drum protrusions 41b fitted into the protrusion holes 53 formed in the 50 and protruding from the outer circumferential surface toward the connecting drum 50 are provided to the inner side of the drum 51 of the connecting drum 50. While the outer surface is accommodated in the space of the outer flange 41c formed in the shape of a polygonal surface having a plurality of planes (41c-1) and the edge (41c-2) connecting the plane (41c-1), The inner flange 41d is formed to include the spline hole 41a to protrude toward the cover plate 60.

In addition, the roller assembly 42 is fitted between the flange protrusions 55 existing on the outer side of the connecting drum 50 as shown in FIG. 24, and the outer circumferential surface thereof is inside the drum 11 of the outer case 10. Roller springs connecting the pair of rollers 42a and 42b and the pair of rollers 42a and 42b installed to be in contact with the peripheral surface and the outer peripheral surface of the outer flange 41c of the brake drum 41 ( A plurality of assemblies of 42c) are provided.

Here, the roller spring 42c is a member having excellent elastic force, but may be made of, for example, rubber, but is not limited thereto.

Finally, as shown in FIG. 25, the brake shaft 43 is coupled to the spline hole 41a of the brake drum 41 in one direction of the shaft length based on the radially protruding flange 43a. A shaft rod 43c fitted into the spline shaft 43b and the center hole 35e of the clutch shaft 35 is continuously formed, and seat cushions are formed in the other direction of the shaft length with respect to the flange 43a. The second spline shaft 43d is formed to be coupled to the link means of 1a so as to enable power transmission.

Here, the length (L3) connecting the both ends of the projection hole 53 in the circumferential direction, as shown in Figure 26 is formed to have a larger dimension than the diameter (D3) of the drum projection (41b).

In addition, as shown in FIG. 10, the gap G1 formed between the drum protrusion 41b and the protrusion hole 53 is a gap G2 formed between the pair of rollers 42a and 42b and the flange protrusion 55. Configured to have a dimension greater than).

And, as shown in Figure 27, the cover plate 60, the flange hole 61 is formed through the central portion so that the inner flange (41d) of the brake drum 41 is forcibly fitted, and the outer case (10) A plurality of assembling holes 62 formed at the outer edge portion so as to be connected to the coupling hole 17 of the through hole, through which the fixing member penetrates, and protruded from the outer edge toward the outer case 10, and the outer case ( It is formed with a plurality of coupling hooks 63 which are inserted into the coupling groove 18 of the 10 and is caught and fixed to the flange portion 16.

Since the diameter of the flange hole 61 is formed to have a size slightly smaller than the diameter of the inner flange 41d constituting the brake drum 41, they are coupled to each other by interference fit, as a result can exhibit a second braking force It will have an effect.

Hereinafter, the operation and effects of the pumping device according to the present invention will be described.

In FIG. 1, it is assumed that the lever bracket 20 rotates clockwise and the seat cushion 1a moves up and down when the handle lever 3 is pulled up.

On the contrary, it is assumed that the lever bracket 20 rotates counterclockwise and the seat cushion 1a moves downward when the handle lever 3 is pushed down.

First, when the occupant pulls the handle lever 3 in the UP direction for the lifting operation of the seat cushion 1a, the lever bracket 20 coupled with the handle lever 3 rotates clockwise. do.

At this time, the first support protrusion 32a of the leaf spring 32 is rotated in the clockwise direction together with the lever bracket 20 by the bracket protrusion 23 of the lever bracket 20, The second support protrusion 32b maintains a state in which movement is restricted by the block protrusion 31b of the spring stopper block 31.

Therefore, the leaf spring 32 is elastically compressed by the clockwise rotation of the lever bracket 20, and then rotates the lever bracket 20 by the elastic restoring force to return to its original position. I will let you.

On the other hand, if the lever bracket 20 is rotated in the clockwise direction, the clutch bracket 35 and the clutch shaft 35 and the spline-coupled clutch shaft 35 and the spline-coupled lever bracket 20 also clockwise together Will rotate (see Figure 9).

When the clutch block 36 rotates in the clockwise direction, the roller 33b of the retainer assembly 33 located at the lowest point L2 of the circularly inclined surface 36b gradually becomes the highest point H2 of the circularly inclined surface 36b. ), And thus the free space existing between the clutch block 36 and the drum portion 51 of the connecting drum 50 is lost, so that the retainer 33a and the retainer assembly 33 of the retainer assembly 33 are removed. The connecting drum 50 rotates clockwise together with the clutch block 36 by the frictional force.

Here, when the retainer assembly 33 rotates clockwise, any one of the pair of clutch springs 34 installed in the spring installation groove 33d in the retainer assembly 33 is a spring stopper block 31. It is elastically compressed and deformed by the spring actuating protrusion 31e provided in the).

As described above, any one of the clutch springs 34 that are compressively deformed accumulates the elastic force and then rotates the retainer assembly 33 in reverse through the restoring force to return to the original position.

On the other hand, when the connecting drum 50 is rotated clockwise along the clutch block 36, the drum projection (41a) located in the middle of the projection hole 53 in Figure 26 is shown in the left In contact with the end is a state capable of power transmission, and at the same time the flange projection 55 of the connecting drum 50 is in a state in which the right side presses the roller 42a on the left in the state shown in Figure 9, accordingly the roller spring 42c is in a state that is elastically compressed.

That is, when the roller 42a on the left side of the roller assembly 42 positioned in the section of the plane 41c-1 of the outer flange 41c of the brake drum 41 is pressed by the flange protrusion 55, the roller on the left side ( 42a) moves to the right in the section of the plane 41c-1 to compress the roller spring 42c, and the roller spring 42c exerts a force to move the roller 42b on the right side through the restoring force. Since the roller 42b on the right side is constrained by the adjacent corner 41c-2 on the right side, the compressed roller spring 42c cannot be restored unless the brake drum 41 is rotated. At the same time, the roller 42b on the right is in a state where it cannot move.

In the above state, when the connecting drum 50 is further rotated in the clockwise direction, the brake drum 41 is clockwise as the rotational force is transmitted through the projection hole 53 and the drum protrusion 41a. The roller spring 42c in the compressed state is restored, and at the same time, the roller 42b on the right side is moved in the right direction to prepare for the next operation.

In addition, in the state in which the left and right rollers 42a and 42b are moved, the movement is restrained by the section of the corner 41c-2 again.

On the other hand, when the brake drum 41 is rotated in the clockwise direction, the brake drum 72 and the spline-coupled brake shaft 43 are also rotated in the same direction, and the seat cushion coupled to the brake shaft 43. As power is transmitted to the link means of (1a), the seat cushion (1a) is moved up and down by one pitch of rotation of the brake drum (41).

Subsequently, when the handle lever 3 pulled up in the UP direction for the lifting movement of the seat cushion 1a is released, the retainer assembly 33 and the clutch block 36 are restrained by the restoring force of the clutch spring 34. ) And the clutch shaft 35 are returned to their original positions to prepare for the next operation, and at the same time, the lever bracket 20 and the handle lever 3 are returned to their original positions by the restoring force of the leaf spring 32. You are ready for the next action.

On the other hand, when the retainer assembly 33 is returned by the restoring force of the clutch spring 34, the roller 33b, which has been in contact with the highest point H2 of the arc slope 36b, is again at the lowest point L2 of the arc slope 36b. By being located at), the remaining clearance between the clutch block 36 and the drum portion 51 of the connecting drum 50 again exists, and as a result, the rotational force in the direction in which the retainer assembly 58 is returned ( Counterclockwise rotation force) is not transmitted to the connecting drum (50).

Therefore, the brake means 40 including the connecting drum 50 continuously restrains the link means of the seat cushion 1a, in which the height adjustment operation is completed, so that the seat cushion 1a can be maintained in the elevated state. do.

In addition, even when the clutch shaft 35 is rotated by the restoring force of the clutch spring 34, the clutch shaft 35 and the brake shaft 43 are not restrained from each other. No power is transmitted towards the means 40.

On the other hand, when the seat cushion 1a is to be continuously raised and lowered, the above-described operation may be repeatedly performed. On the other hand, when the seat cushion 1a is to be lowered, the handle lever 3 is down. The lowering operation of the seat cushion 1a is performed by performing the operation of pushing in the (DW) direction.

At this time, when the handle lever 3 is pushed in the down (DW) direction, the operation of the clutch means 30 and the brake means 40 performs the above-described reverse operation, so a detailed description thereof will be omitted. .

Accordingly, the pumping device according to the present invention is configured such that the arrangement of the clutch means 30 and the brake means 40 has a single-row arrangement structure, whereby the clutch means and the brake means have a two-row arrangement structure. In comparison, there is an advantage that the overall size, volume and weight are greatly reduced.

As a result, the pumping device of the present invention can achieve cost reduction, and in particular, there is an advantage in mounting a small car.

In addition, since the pumping device of the present invention has a structure in which the clutch spring 34 is accommodated in the retainer 33a, there is also an advantage that the configuration can be simplified and the overall size and volume can be reduced.

In addition, the present invention has a configuration in which the leaf spring 32 that elastically provides a restoring force to the operation of the lever bracket 20 is accommodated and installed in the outer case 10, the grease is applied to the leaf spring 32 It is possible to prevent dust and other contaminants from coming into contact with each other as much as possible, resulting in increased durability, thereby improving the performance and quality of the overall pumping device.

In addition, the present invention further comprises an inner flange (41d) to the brake drum 41 to be more securely coupled to the cover plate 60, thereby reducing the operation noise and can achieve an improved operation feeling. Will be.

As described above, the pumping device according to the present invention is configured such that the clutch means and the brake means have a single-row arrangement structure, thereby greatly reducing the overall size, volume, and weight, thereby achieving cost reduction, and preventing contamination of parts. By doing so, it is possible to improve the durability and to improve the performance and quality of the operation, and also to reduce the operation noise and improve the operation feeling.

Claims (13)

A drum-shaped outer case 10 fixedly installed inside the seat cushion 1a; Padded on the front of the outer case 10 while being installed so that some sections are located in the inner space through the outer case 10 while being coupled with the handle lever (3) up (UP) of the handle lever (3) Lever bracket 20 which rotates during the DOWN / DOWN operation; It is accommodated in the inner space of the outer case 10 is installed to enable elastic rotation through the lever bracket 20 while transmitting power to the link means of the seat cushion (1a) to increase the height of the seat cushion (1a) Clutch means 30 for adjusting; The seat cushion 1a, which is accommodated in the inner space of the outer case 10 and installed to have a one-row arrangement structure on the outer side of the clutch means 30, receives power from the clutch means 30, and completes height adjustment operation. Brake means (40) for selectively restraining the link means of the movement; A connection drum (50) interposed between the clutch means (30) and the brake means (40) so as to transmit power of the clutch means (30) to the brake means (40); A cover plate 60 which is padded on the open rear surface of the outer case 10 to be sealed; Pumping device for a seat cushion of the vehicle, characterized in that comprises a. The method of claim 1, wherein the outer case 10, A drum unit (11) formed to accommodate the clutch means (30), the brake means (40) and the connecting drum (50) in an inner space; A shaft hole 12 formed at the center of the drum portion 11; A plurality of projection holes 13 formed along the same radius from the shaft hole 12; An arc-shaped lever hole 14 formed along the radius larger than the protrusion hole 13 in the shaft hole 12; A block projection hole (15) cut in the lever hole (14) toward the shaft hole (12); A flange portion 16 which is bent radially from the drum portion 11 and is formed along the circumferential direction and is in surface contact with the cover plate 60; A plurality of coupling holes 17 and coupling grooves 18 formed in the flange portion 16; The pumping device for a seat cushion of the vehicle, characterized in that it is provided with. The method according to claim 2, The lever bracket 20, A bracket hole 21 formed in a spline shape at the center portion; A coupling hole 22 formed at the same radius from the bracket hole 21 and through which the coupling member penetrates for coupling with the handle lever 3; A bracket protrusion 23 protruding toward the outer case 10 at one portion of an outer circumferential surface and inserted into the lever hole 14; A lever coupling groove 24 formed spaced apart in a plurality of places along the outer circumferential surface to increase the coupling force with the handle lever 3; The pumping device for a seat cushion of the vehicle, characterized in that it is provided with. The method of claim 3, wherein the length (L1) connecting both ends in the circumferential direction in the lever hole (14) is larger than the width (D1) of the bracket projection (23); The bracket protrusion 23 is inserted to be positioned at the center of the lever hole 14 so as to be rotatable within a range of 15 ° to 30 ° in the clockwise or counterclockwise direction, respectively, according to the operation of the handle lever 4. A pumping device for a seat cushion of a vehicle, characterized in that. The method of claim 3, wherein the clutch means 30, A plurality of engaging projections 31a and block projections 31b, which are inserted into and coupled to the projection holes 13 and the block projection holes 15 formed in the drum 11, respectively, protrude toward the outer case 10, protrude. A rotation limiting protrusion 31c extending from the block protrusion 31b, a pair of guide flanges 31d formed at a portion of an outer circumferential surface, and a guide flange at a rear side thereof toward the cover plate 60. A spring stopper block 31 in which a pair of spring actuating projections 31e formed along a radius smaller than 31d is formed; The first and second support protrusions 32a and 32b, which are installed to be located in the space between the drum unit 11 and the spring stopper block 31 and are bent at right angles to both ends thereof, have the bracket protrusion 23 and the block. A leaf spring (32) installed to be supported by the side of the projection (31b) to impart a restoring force to the rotation of the lever bracket (20); It is composed of a cylindrical retainer 33a and a plurality of rollers 33b coupled to the circumferential surface of the retainer 33a so as to be free to rotate, while the spring actuating projection is provided on the front surface of the guide flange 31d. The projection guide groove 33c and the spring installation groove 33d into which the 31e is fitted are continuously formed in pairs symmetrically with each other, and both side surfaces of the rotation limiting protrusion 31c are formed in a portion of the outer circumferential surface. A retainer assembly 33 having a retainer cutting surface 33f for controlling the rotation angle of the spring stopper block 31 through a locking step 33e for selectively contacting the spring; A pair of clutch springs which are inserted into the spring installation groove 33d and installed to support both ends thereof, and are elastically compressed and deformed by both ends to the spring actuating protrusion 31e contacting with the rotation of the retainer 33a ( 34); A shaft flange 35a extending radially from the longitudinal middle point of the shaft and positioned in the retainer assembly 33; and extending from the shaft flange 35a to one of the shaft lengths, the shaft hole of the outer case 10; A first spline shaft (35b) positioned in (12) and a first spline shaft extending in the axial length direction from the case coupling surface (35b) to form a spline coupling with the bracket hole (21) of the lever bracket (20); 35c and protrudes from the shaft flange 35a in the opposite direction of the first spline shaft 35c to penetrate through the center of the second spline shaft 35d and the first and second spline shafts 35c and 35d. A clutch shaft 35 formed to have a center hole 35e formed therein; A roller of the retainer assembly 33 in a state in which a spline-shaped block hole 36a that is engaged with the second spline shaft 35d is formed through the center and is engaged with the second spline shaft 35d. The outer circumferential surface making contact with (33b) includes a clutch block (36) in which an arc slope (36b) having a highest point (H2) and a lowest point (L2) is repeatedly formed along the circumferential direction; Pumping device for a seat cushion of the vehicle, characterized in that consisting of. The pump device according to claim 5, wherein the width (D2) and the thickness (T1) of the block protrusion (31b) are formed to have the same dimensions as the block protrusion hole (15). The seat cushion of a vehicle according to claim 5, wherein the spring actuating projection 31e and the projection guide groove 33c are formed such that lengths L4 and L5 connecting both ends along the radial direction have the same dimensions. Pumping device. The pumping device of claim 5, wherein the retainer cutting surface (33f) is formed to be located at an outer circumferential surface of any one of the pair of protrusion guide grooves (33c). The method according to claim 5, The connecting drum 50, A drum portion (51) formed to receive a portion of the retainer assembly (33) as an inner space such that the roller (33b) of the retainer assembly (33) is in contact with an inner circumferential surface; A drum hole 52 formed at the center of the drum portion 51 and through which the second spline shaft 35d of the clutch shaft 35 passes; A plurality of projection holes 53 formed at equal intervals from the drum hole 51a along the same radius; A flange portion 54 bent in the radial direction from the drum portion 51 and formed along the circumferential direction; A plurality of flange protrusions 55 extending from the outer circumferential surface of the flange portion 54 toward the cover plate 60; The pumping device for a seat cushion of the vehicle, characterized in that it is provided with. The pumping device for a seat cushion of a vehicle according to claim 9, wherein the protruding hole (53) is a hole of a long groove formed along a radial direction. The method according to claim 9, wherein the brake means 40, A spline hole 41a penetrating the central portion, a plurality of drum protrusions 41b protruding along the same radius around the spline hole 41a and fitted into the protrusion holes 53 formed in the connecting drum 50; The outer peripheral surface protrudes toward the connecting drum 50 to accommodate the drum 51 of the connecting drum 50 as an inner space while the outer surface is a plurality of planes (41c-1) and this plane ( The inner flange 41d protruding toward the cover plate 60 including the outer flange 41c formed in the shape of a polygonal surface having a corner 41c-2 connecting the 41c-1 and the spline hole 41a. Break drum 41 formed with; The outer circumferential surface thereof is fitted between the flange protrusions 55 existing on the outer side of the connecting drum 50, and the outer circumferential surface of the drum unit 11 of the outer case 10 and the outer flange 41c of the brake drum 41 are included. A roller assembly 42 having a plurality of assemblies of a pair of rollers 42a and 42b installed to contact an outer circumferential surface of the &lt; RTI ID = 0.0 &gt;) &lt; / RTI &gt;; A central hole of the first spline shaft 43b and the clutch shaft 35 engaged with the spline hole 41a of the brake drum 41 in one direction of the shaft length with respect to the radially protruding flange 43a. The shaft rod 43c fitted to the 35e is continuously formed, and the second rod is coupled to the link means of the seat cushion 1a so as to allow power transmission in the other direction of the shaft length relative to the flange 43a. A brake shaft 43 having a spline shaft 43d; Pumping device for a seat cushion of the vehicle, characterized in that consisting of. The gap G1 formed between the drum protrusion 41b and the protrusion hole 53 is a gap G2 formed between the pair of rollers 42a and 42b and the flange protrusion 55. A pumping device for a seat cushion of a vehicle, characterized in that it is configured to have a larger dimension. The method of claim 11, wherein the cover plate 60, A flange hole 61 formed through the central portion so that the inner flange 41d of the brake drum 41 is forcibly fitted; A plurality of assembly holes 62 formed at an outer edge portion of the outer case 10 so as to be connected to the coupling holes 17 of the outer case 10 and through which the fixing member penetrates; A plurality of coupling hooks 63 protruding from the outer edge toward the outer case 10 while being inserted into the coupling grooves 18 of the outer case 10 and fixed to the flange 16; The pumping device for a seat cushion of the vehicle, characterized in that it is provided with.

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