CN210397496U

CN210397496U - Clutch hydraulic shock absorber

Info

Publication number: CN210397496U
Application number: CN201920490102.4U
Authority: CN
Inventors: 陈力
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-04-24
Anticipated expiration: 2029-04-11

Abstract

The utility model provides a separation and reunion hydraulic shock absorber, including inside valve body that is the cavity and the disk seat of locating the valve body bottom, the cavity is including the first cavity of intercommunication oil inlet and oil-out, and the second cavity of intercommunication first cavity, separation and reunion hydraulic shock absorber is still including locating in the second cavity and form the damper who holds the chamber with the inner wall of valve body, the damper includes one end open-ended cushion collar, pass the cushion collar open end and form the gag lever post that seals the chamber with cushion collar's inner wall, the rigid coupling is in gag lever post and cushion collar open end with sealed cushion collar's clamp plate, the tip of clamp plate still is fixed in between valve body and the disk seat, cushion collar can be flexible in the closed chamber along with the oil pressure size that flows into in the first hydraulic oil cavity, the volume that the chamber was held. The utility model discloses an act on the hydraulic oil of buffer sleeve surface, make it by the closed intracavity compression of outer court, change and hold the chamber volume, adjust first cavity oil pressure, reduce hydraulic pressure fluctuation, slow down the footboard shake.

Description

Clutch hydraulic shock absorber

Technical Field

The utility model relates to a hydraulic clutch actuator's shock absorber field especially relates to a separation and reunion hydraulic shock absorber ware.

Background

With the development of the automobile industry, people have higher and higher requirements on the driving comfort of vehicles, and a clutch hydraulic control system is used as an important power accessory of a manual transmission automobile and is responsible for transmitting hydraulic pressure to separate a clutch and smoothly shift gears.

In the prior art, as shown in fig. 1, 1 is a valve body, 2 is a sealing gasket, 3 is a metal diaphragm, 3 is a connecting bolt, 5 is a metal cover plate, when the pedal shaking phenomenon occurs, a metal shock absorber is connected in series through a bolt in the middle of a pipeline and fixed on a vehicle body, so that when hydraulic pressure enters the shock absorber and acts on the metal diaphragm, the shock absorber is enabled to be deformed, an inner cavity is enlarged, oil pressure fluctuation is reduced, pedal shaking is optimized, but the structure is required to be connected in series in the middle of the pipeline, the metal material is heavy and needs to be fixed, a large amount of space is required for arrangement, meanwhile, bolt connection and disassembly are complicated, the structure is required to adjust a system through adjusting the material characteristics of the metal diaphragm, and the model.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a clutch hydraulic damper which can solve the pedal shaking phenomenon, simplify the arrangement, and facilitate the adjustment.

The utility model provides a clutch hydraulic shock absorber, which comprises a valve body with a cavity inside and a valve seat arranged at the bottom of the valve body, the cavity comprises a first cavity communicated with the oil inlet and the oil outlet and a second cavity communicated with the first cavity, the clutch hydraulic damper also comprises a damping piece which is arranged in the second cavity and forms an accommodating cavity with the inner wall of the valve body, the shock absorption piece comprises a buffer sleeve with an opening at one end, a limiting rod which penetrates through the opening end of the buffer sleeve and forms a closed cavity with the inner wall of the buffer sleeve, and a pressing plate which is fixedly connected with the limiting rod and the opening end of the buffer sleeve to seal the buffer sleeve, the circumference tip of clamp plate still is fixed in the valve body with between the disk seat, buffer sleeve can be along with flowing into the oil pressure size of hydraulic oil is in the first cavity seals the intracavity and stretches out and draws back, changes the volume that holds the chamber.

In a preferred embodiment, in an initial state, a part of the hydraulic oil flowing into the first cavity through the oil inlet flows out from the oil outlet, and the other part of the hydraulic oil fills the accommodating cavity; when the oil pressure in the first cavity is greater than the deformation threshold of the buffer sleeve, the volume of the accommodating cavity is increased along with the increase of the oil pressure in the first cavity.

In a preferred embodiment, the outer wall of the bottom of the valve body is provided with first threads, the inner wall of the top of the valve seat is provided with second threads, and the valve seat is screwed to the valve body through the matching of the first threads and the second threads.

In a preferred embodiment, the bottom of the valve body is provided with an inverted L-shaped first limiting portion protruding outwards, the inner side of the first limiting portion is provided with a limiting groove, the open end of the buffer sleeve is provided with a flange extending along the outer side of the circumferential outer edge, and the pressing plate covers the flange and the bottom of the open end of the buffer sleeve and is matched with the valve seat to be clamped in the limiting groove.

In a preferred embodiment, the sum of the heights of the flanging and the pressing plate is greater than the height of the limiting groove.

In a preferred embodiment, the buffering sleeve comprises a barrel-shaped outer sleeve and an inner sleeve, the inner sleeve is embedded in the outer sleeve, the top of the outer sleeve is connected with the top of the inner sleeve, and a mounting groove is formed between the outer sleeve and the inner sleeve.

In a preferred embodiment, the closed cavity is formed by the limiting rod inserted into the inner sleeve and the inner wall of the inner sleeve, and the flange is formed by extending the circumferential edge of the open end of the outer sleeve outwards.

In a preferred embodiment, the outer surface of the outer sleeve is provided with a tangent plane, and the tangent plane is arranged at the side part of the top end of the outer sleeve.

In a preferred embodiment, a buffering support frame is arranged in the mounting groove, the buffering support frame is of a cylindrical structure, and the outer sleeve can inwards compress the inner sleeve through the buffering support frame along with the oil pressure in the first cavity to change the volume of the accommodating cavity.

In a preferred embodiment, the top opening of the buffering support frame is sleeved outside the connecting portion between the outer sleeve and the inner sleeve, the bottom opening of the buffering support frame is disposed between the upper surface of the bottom of the outer sleeve and the lower surface of the bottom of the inner sleeve, and the radius of the top opening of the buffering support frame is smaller than the radius of the bottom opening of the buffering support frame.

Finally, the utility model discloses after hydraulic oil produced the pressure that can take place deformation to the cushion collar surface, the damping piece was compressed by outer closed intracavity, changes the volume that holds the chamber (the cavity that holds the hydraulic oil that flows in by first cavity reposition of redundant personnel that forms between damping piece and the valve body inner wall), adjusts the oil pressure in the first cavity, reduces hydraulic pressure fluctuation, slows down the footboard shake, improves and drives the travelling comfort.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a clutch hydraulic shock absorber according to one embodiment of the prior art;

fig. 2 is a schematic structural view of a specific embodiment of the clutch hydraulic shock absorber of the present invention;

FIG. 3 is a schematic axial cross-sectional view of the clutched hydraulic damper of FIG. 1;

FIG. 4 is a schematic view of the valve body of FIG. 3;

FIG. 5 is a schematic view of the shock absorbing member of FIG. 3;

fig. 6 is a schematic structural view of the cushion sleeve provided on the pressure plate in fig. 5.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 2-6, the utility model provides a separation and reunion hydraulic shock absorber, including inside for the valve body 10 of the formula of inserting soon of cavity 100 and the disk seat 20 of locating valve body 10 bottom for valve body 10 is direct to be connected with the master cylinder, no longer need fix alone, conveniently arranges and the dismouting.

As shown in fig. 2 and 3, in the present invention, the bottom outer wall of the valve body 10 is provided with a first thread 11, the top outer wall of the valve seat 20 is provided with a second thread, and the valve body 10 is connected to the valve body 10 by the matching threads (screw joint) of the first thread 11 and the second thread.

Furthermore, the bottom of the valve body 10 of the present invention is further provided with an inverted L-shaped first limiting portion 12 protruding outward, and the valve seat 20 is installed outside the first limiting portion 12; meanwhile, a limiting groove 13 is formed in the inner side of the first limiting portion 12, a flanging 31a formed by extending along the outer side of the circumferential edge is arranged at the opening end of the buffer sleeve, and a pressing plate 33 covers the flanging 31a and the bottom of the opening end of the buffer sleeve and is clamped in the limiting groove 13 in cooperation with the valve seat 20 to fix and seal the buffer sleeve 31. In a preferred embodiment, the sum of the heights of the turned-over edge 31a and the pressing plate 33 is slightly greater than the height of the limiting groove 13, so that the pressing plate 33 and the turned-over edge 31a are compressed between the limiting groove 13 and the valve seat 20, and the pressing plate 33 completely blocks the open end of the buffer sleeve 31 (i.e., the open end of the buffer sleeve), thereby ensuring the sealing performance of the buffer sleeve 31, and avoiding the influence on the adjustment and maintenance of the oil pressure in the first cavity 10c when the oil pressure value is stable.

As shown in fig. 4, in the present invention, the cavity 100 includes a first cavity 10c communicating the oil inlet 10a and the oil outlet 10b, and a second cavity 10d communicating with the first cavity 10 c; the clutch hydraulic shock absorber further comprises a shock absorption piece 30 which is arranged in the second cavity 10d and forms an accommodating cavity 30a with the inner wall of the valve body 10, when large hydraulic fluctuation does not occur in an initial state and a hydraulic system, namely the oil pressure in the first cavity 11a is smaller than the deformation threshold value of the shock absorption piece 30, one part of hydraulic oil flowing into the first cavity 10c through the oil inlet 10a directly flows out of the oil outlet 10b, and the other part of hydraulic oil is filled in the accommodating cavity 30 a.

Specifically, referring to fig. 2, 3 and 5, the damping member 30 includes a buffering sleeve 31 having an opening at one end, a limiting rod 32 penetrating through the opening end of the buffering sleeve and forming a closed cavity 30b with the inner wall of the buffering sleeve 31, and a pressing plate 33 fixedly connected to the limiting rod 32 and the bottom of the opening end of the buffering sleeve to seal the buffering sleeve 31, the circumferential end of the pressing plate 33 is further fixed between the valve body 10 and the valve seat 20 to support, stabilize the relative position of the damping member 30 in the second cavity 10d, and the buffering sleeve 31 can extend and retract along the direction of the limiting rod 32 in the closed cavity 30b along with the oil pressure of the hydraulic oil flowing into the first cavity 10c (under the conditions of outward sequential compression and inward sequential recovery), change the volume of the accommodating cavity 30a capable of shunting the hydraulic oil in the first cavity 10c, and further change the oil pressure in the first cavity 10c, the problem of clutch pedal shake is solved, optimize the feel, promote the comfort level, adjust the convenience and arrange simply.

The utility model discloses in, the circumference tip of clamp plate 33 both indicates the circumference tip of circular clamp plate (the utility model discloses regard as concrete embodiment with circular clamp plate, explain the technological principle of present case), also indicate the circumference edge of other shape clamp plates such as square, do not specifically do the restriction.

The utility model discloses in, gag lever post 32 plays the effect of guide buffer sleeve 31 in the internal extensional deformation of closed chamber 30b, ensure buffer sleeve 31's deformation direction, when hydraulic system appears great impact fluctuation, when also the oil pressure (the oil pressure of direct action on buffer sleeve 31 surface) in first cavity 11a is greater than buffer sleeve 31's deformation threshold value (the oil pressure value when beginning to compress inward and produce deformation), buffer sleeve 31 compresses towards closed chamber 30b along gag lever post 32's direction, make the volume that holds chamber 30a increase along with the increase of the interior oil pressure of first cavity 10c, shunt more hydraulic oil in first cavity 10c to second cavity 10d, reduce the oil pressure in first cavity 10c until stable, it is undulant to reduce hydraulic pressure, slow down the footboard shake; and when the oil pressure in first cavity 10c was by big diminishing, because cushion sleeve 31 itself has the restoring force of reconversion in order to can outwards extend under compression state and resume to initial condition, the volume that holds chamber 30a at this moment is by big diminishing, the volume that holds the hydraulic oil that holds in chamber 30a is by big diminishing, more hydraulic oil flows into first cavity 10c and flows out through oil-out 10b, increase first cavity 10 c's oil pressure, the realization keeps the effect at steady state with the oil pressure in first cavity 10c all the time, it drives the travelling comfort to improve.

Further, as shown in fig. 3, 5 and 6, the buffering sleeve 31 includes a barrel-shaped outer sleeve 311 and an inner sleeve 312, the inner sleeve 312 is embedded in the outer sleeve 311, the top of the outer sleeve 311 is connected to the top of the inner sleeve 312, so that the outer sleeve 311 compresses the top of the inner sleeve 312 when being compressed by a downward force, thereby vertically changing the volume of the accommodating cavity 30 a; and a mounting groove 31b is formed between the outer sleeve 311 and the inner sleeve 312, so that when the outer sleeve 311 is compressed by a lateral force, the outer sleeve is deformed laterally towards the inside of the mounting groove 31b, the volume of the accommodating cavity 30a is changed laterally, and the oil pressure in the first cavity 10c is adjusted.

It can be understood that the utility model discloses the material type of outer sleeve is adjusted in order to change its hardness to make its deflection corresponding change, reach the footboard shake phenomenon under the different operating modes of improvement different vehicles. In a preferred embodiment, the outer surface of the outer sleeve 311 is provided with a cut surface 313, and the cut surface 313 is arranged on the side portion of the top end of the outer sleeve 311 (refer to fig. 3 with emphasis), so that the top portion of the outer sleeve 311 is polygonal, the contact area between the hydraulic oil and the outer sleeve 311 is increased, and the accuracy of adjusting the oil pressure in the first cavity 10c is improved. In other embodiments, the specific shape and configuration of the cutting surface 313 is not limited.

The utility model discloses in, closed chamber 30b is formed by the gag lever post 32 that inserts inner skleeve 312 and inner skleeve 312's inner wall, and turn-ups 31a is formed by the outside extension in the circumference edge of outer skleeve open end (refer to fig. 3 in particular), and cushion sleeve 31, gag lever post 32 and buffer support 34 are the interference relation, unable relative motion.

Referring to fig. 3 and 5 again, a buffer support 34 is further disposed in the mounting groove 31b formed between the outer sleeve 311 and the inner sleeve 312, the buffer support 34 is a cylindrical structure (hollow frame with two open ends), the outer sleeve 311 can compress the inner sleeve 312 inwards through the buffer support 34 according to the oil pressure of the hydraulic oil flowing into the first cavity 10c, so as to change the volume of the accommodating cavity 30a, and achieve the purpose of adjusting the oil pressure in the first cavity 10 c. In detail, the top opening of the buffering support frame 34 is sleeved outside the connecting portion between the outer sleeve 311 and the inner sleeve 312, the bottom opening of the buffering support frame 34 is disposed between the bottom upper surface of the outer sleeve 311 and the bottom lower surface of the inner sleeve 312, and the opening radius of the buffering support frame 34 is smaller than the bottom opening radius, which is beneficial to positioning the outer sleeve 311; meanwhile, the outer sleeve 311, the buffer support frame 34, the inner sleeve 312 and the limiting rod 32 are coaxially arranged, the pressing plate 33 is a circular plate, and the limiting rod 32 is arranged at the center of the pressing plate 33 to ensure the deformation guidance of the outer sleeve 311 and the stability of extension and retraction in the closed cavity 30 b.

The utility model discloses in, clamp plate 33 among the damper 30 can be metal structure or plastics material structure for metal circular plate, buffering support frame 34, and cushion sleeve 31 and gag lever post 32 are plastics material structure for whole hydraulic clutch shock-absorbing structure does not have corruption, light in weight, satisfies vehicle lightweight performance. In addition, in the preferred embodiment of the present invention, the buffering sleeve 31 and the buffering supporting frame 34 may be an integrated structure, or may be separate components and connected by interference fit.

Finally, after the hydraulic oil generates the deformable pressure on the outer surface of the buffering sleeve, the damping piece is compressed from the outside to the inside of the closed cavity, the volume of the accommodating cavity (the cavity formed between the damping piece and the inner wall of the valve body and used for accommodating the hydraulic oil which flows in by shunting of the first cavity) is changed, the oil pressure in the first cavity is adjusted, the hydraulic fluctuation is reduced, the pedal shake is slowed down, and the driving comfort is improved; meanwhile, the base and the valve body are in threaded connection, so that the arrangement is simplified and the adjustment is convenient.

The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, but the present invention is not limited to the above embodiments, and any skilled person familiar with the art can make some changes or modifications to equivalent embodiments of equivalent changes within the technical scope of the present invention without departing from the technical scope of the present invention, but any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the technical scope of the present invention.

Claims

1. The clutch hydraulic shock absorber is characterized by comprising a valve body (10) and a valve seat (20), wherein a cavity (100) is arranged inside the valve body, the valve seat (20) is arranged at the bottom of the valve body (10), the cavity (100) comprises a first cavity (10c) and a second cavity (10d), the first cavity (10c) is communicated with an oil inlet (10a) and an oil outlet (10b), the second cavity (10d) is communicated with the first cavity (10c), the clutch hydraulic shock absorber further comprises a shock absorption piece (30) which is arranged in the second cavity (10d) and forms an accommodating cavity (30a) with the inner wall of the valve body (10), the shock absorption piece (30) comprises a buffer sleeve (31) with an opening at one end, a limiting rod (32) which penetrates through the opening end of the buffer sleeve and forms a closed cavity (30b) with the inner wall of the buffer sleeve (31), and a pressing plate (33) which is fixedly connected to the limiting rod (32) and the opening, the circumference tip of clamp plate (33) still is fixed in valve body (10) with between valve seat (20), buffer sleeve (31) can be along with flow in the oil pressure size of hydraulic oil is in first cavity (10c) is flexible in closed chamber (30b), changes the volume that holds chamber (30 a).

2. The clutched hydraulic shock absorber of claim 1, wherein in an initial state, a part of hydraulic oil flowing into the first cavity (10c) through the oil inlet (10a) flows out from the oil outlet (10b) and another part fills the accommodation chamber (30 a); when the oil pressure in the first cavity (10c) is larger than the deformation threshold of the buffer sleeve (31), the volume of the accommodating cavity (30a) is increased along with the increase of the oil pressure in the first cavity (10 c).

3. The on-off hydraulic shock absorber according to claim 1, characterized in that the bottom outer wall of the valve body (10) is provided with a first thread (11), the top inner wall of the valve seat (20) is provided with a second thread, and the valve seat (20) is screwed to the valve body (10) through the matching of the first thread (11) and the second thread.

4. The clutch hydraulic shock absorber according to claim 3, wherein an inverted L-shaped first limiting portion (12) protruding outwards is arranged at the bottom of the valve body (10), a limiting groove (13) is arranged on the inner side of the first limiting portion (12), a flanging (31a) extending along the outer side of the circumferential outer edge is arranged at the opening end of the buffering sleeve, and the pressing plate (33) covers the flanging (31a) and the bottom of the opening end of the buffering sleeve and is matched with the valve seat (20) to be clamped in the limiting groove (13).

5. Clutch hydraulic damper according to claim 4, characterized in that the sum of the height of the flanges (31a) and the pressure plate (33) is greater than the height of the limiting groove (13).

6. The clutched hydraulic damper according to claim 4, characterized in that the damping sleeve (31) comprises a barrel-shaped outer sleeve (311) and an inner sleeve (312), the inner sleeve (312) is embedded in the outer sleeve (311), a top of the outer sleeve (311) is connected to a top of the inner sleeve (312), and a mounting groove (31b) is formed between the outer sleeve (311) and the inner sleeve (312).

7. The clutched hydraulic damper of claim 6, wherein the closed cavity (30b) is formed by the stop rod (32) inserted into the inner sleeve (312) and an inner wall of the inner sleeve (312), and the flange (31a) is formed by a circumferential edge of an open end of the outer sleeve extending outward.

8. Clutch hydraulic shock absorber according to claim 6, wherein the outer surface of the outer sleeve (311) is provided with a chamfer (313), said chamfer (313) being provided at the top side of the outer sleeve (311).

9. The clutched hydraulic shock absorber of claim 6, wherein a buffering support frame (34) is arranged in the mounting groove (31b), the buffering support frame (34) is of a cylindrical structure, and the outer sleeve (311) can inwardly compress the inner sleeve (312) through the buffering support frame (34) along with the oil pressure in the first cavity (10c) to change the volume of the accommodating cavity (30 a).

10. The clutched hydraulic shock absorber of claim 9, wherein a top opening of the buffer support frame (34) is sleeved outside a connecting portion of the outer sleeve (311) and the inner sleeve (312), a bottom opening of the buffer support frame (34) is arranged between a bottom upper surface of the outer sleeve (311) and a bottom lower surface of the inner sleeve (312), and a top opening radius of the buffer support frame (34) is smaller than a bottom opening radius thereof.