CN216045170U - Shock absorber and suspension assembly - Google Patents
Shock absorber and suspension assembly Download PDFInfo
- Publication number
- CN216045170U CN216045170U CN202121556294.8U CN202121556294U CN216045170U CN 216045170 U CN216045170 U CN 216045170U CN 202121556294 U CN202121556294 U CN 202121556294U CN 216045170 U CN216045170 U CN 216045170U
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- Prior art keywords
- shock absorber
- damping piston
- slider
- piston
- spring
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Abstract
The utility model discloses a shock absorber in the field of automobile suspension, which can realize adjustable damping and reduce the failure rate of the shock absorber, and comprises: a cylinder body; the damping piston can slide up and down in the inner cavity of the cylinder body and is provided with a throttling hole which is communicated up and down; the utility model further provides a suspension assembly.
Description
Technical Field
The utility model relates to the field of automobile suspensions, in particular to a shock absorber and a suspension assembly.
Background
When a vehicle runs, jolting is often generated when the road condition is not good or obstacles exist on the road surface and the like, so that the comfort of passengers is reduced; therefore, a shock absorber needs to be installed in a suspension system of the automobile, so that the shock in the driving process of the automobile is quickly attenuated, and the driving smoothness of the automobile is improved.
For this reason, the prior art provides a bumper shock absorber, adjusts the size of orifice through the adjustment mechanism with the conical piston butt, plays damping adjustable function, because in the middle of the car driving process, the conical piston needs frequent up-and-down motion, causes adjustment mechanism and piston relative slip frequent, causes the piston damage easily, causes the bumper shock absorber card to die, and conical piston is not good with cylinder body sealing performance, influences the performance of whole bumper shock absorber.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a shock absorber which can realize adjustable damping and reduce the failure rate of the shock absorber.
A shock absorber, comprising: a cylinder body; the damping piston can slide up and down in the inner cavity of the cylinder body and is provided with a throttling hole which is communicated up and down; and the adjusting mechanism is arranged inside the damping piston and is used for adjusting the flow area of the throttling hole.
The adjustment mechanism includes: the first sliding block is arranged on the upper end surface or the lower end surface of the damping piston; the second sliding block is arranged in a crossed mode with the throttling hole and comprises a necking section capable of extending into the throttling hole; all be provided with the inclined plane that can mutual butt on first slider and the second slider.
A first spring is connected between the first sliding block and the damping piston and is a compression spring.
And a second spring is connected between the second sliding block and the damping piston and is a compression spring.
The adjusting mechanism further comprises a one-way valve, the one-way valve is arranged at one end of the throttling hole, and the one-way valve and the first sliding block are respectively arranged on the upper end face and the lower end face of the damping piston.
Two throttling holes are formed in the damping piston, the number of the first sliding blocks and the number of the second sliding blocks are two, and the two second sliding blocks are respectively crossed with one throttling hole.
The two first sliding blocks are respectively arranged on the upper end surface and the lower end surface of the damping piston.
The cylinder body includes: an oil storage cylinder barrel; the working cylinder barrel is sleeved in the oil storage cylinder barrel and communicated with the oil storage cylinder barrel, and the piston is in sliding fit with the inner wall of the working cylinder barrel; the bumper shock absorber still includes: the damping piston rod is connected with the damping piston; the guide seat plugs the openings at the upper ends of the oil storage cylinder barrel and the working cylinder barrel, and the damping piston rod penetrates through the guide seat and is in sliding fit with the guide seat.
The shock absorber further comprises a dust cover, the dust cover is connected with the shock absorption piston rod, and the dust cover is sleeved on the periphery of the oil storage cylinder barrel.
A suspension assembly comprising: a lower swing arm; in the shock absorber, the cylinder body is connected with the lower swing arm; the upper swing arm is connected with the piston; the spring support is in rotating connection with the lower swing arm; and the air spring is arranged on the spring support.
When the shock absorber is applied, when an obstacle or a pit is raised in the running process of an automobile, the shock absorber is pressed or pulled, the shock absorbing piston can move upwards or downwards in the cylinder body, at the moment, the shock absorbing medium in the shock absorber can pass through the throttling hole, the shock absorbing piston obtains damping force, jolts are attenuated, and the damping force obtained by the shock absorbing piston when the shock absorbing medium passes through the throttling hole can be adjusted through the adjusting mechanism because the adjusting mechanism can adjust the overflowing area of the throttling hole; because the adjusting mechanism is arranged in the piston and moves up and down along with the piston, the damage to the piston caused by the relative movement of the adjusting mechanism and the damping piston is effectively reduced, and the failure rate of the damper is reduced.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an isometric view of a suspension assembly in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a shock absorber according to an embodiment of the present invention;
FIG. 3 is a top view of the damping piston of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
the above figures contain the following reference numerals.
| Reference numerals | Name (R) |
| 100 | |
| 200 | |
| 300 | |
| 400 | Shock absorber |
| 411 | |
| 412 | Oil |
| 413 | |
| 420 | Guide seat |
| 430 | |
| 440 | |
| 441 | |
| 442 | |
| 443 | |
| 444 | |
| 445 | |
| 446 | |
| 447 | |
| 450 | Pressure reducing |
| 460 | Lower fixing seat |
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 2 to 5, the shock absorber 400 of the present embodiment includes: a cylinder body; the damping piston 440 can slide up and down in the inner cavity of the cylinder body, and the damping piston 440 is provided with a throttle hole 447 which is communicated up and down; and an adjusting mechanism arranged inside the damping piston 440 and used for adjusting the flow area of the throttle hole 447.
With the shock absorber 400, when an obstacle or a pit is raised during the running of an automobile, the shock absorber 400 is pressed or pulled, the shock absorbing piston 440 moves upwards or downwards in the cylinder body, at the moment, the shock absorbing medium in the shock absorber 400 passes through the throttle hole 447, the shock absorbing piston 440 obtains damping force to attenuate the jolt, and the damping force obtained by the shock absorbing piston 440 when the shock absorbing medium passes through the throttle hole 447 can be adjusted by the adjusting mechanism because the adjusting mechanism can adjust the overflowing area of the throttle hole 447; because the adjusting mechanism is arranged in the piston and moves up and down along with the piston, the damage to the piston caused by the relative movement of the adjusting mechanism and the damping piston 440 is effectively reduced, and the failure rate of the damper 400 is reduced.
Wherein the regulating mechanism may regulate the flow area of orifice 447 in a variety of ways, such as by regulating the valve opening to regulate the flow area of orifice 447 via a valve disposed in the flow orifice; a movable tapered portion may be provided in the throttle hole 447, and the flow area of the throttle hole 447 may be adjusted by adjusting the position of the tapered portion.
The damping medium can be made of hydraulic oil or other damping liquid or air or nitrogen according to the requirement.
As shown in fig. 4 and 5, the adjustment mechanism includes: a first slider 441 disposed on an upper end surface or a lower end surface of the damping piston 440; a second slider 442 provided across the orifice 447, the second slider 442 including a constricted section capable of extending into the orifice 447; the first slider 441 and the second slider 442 are provided with inclined surfaces which can be abutted against each other; in the present embodiment, the first slider 441 may be disposed at an upper end surface or a lower end surface of the damping piston 440; when the shock absorber 400 is pulled and the piston moves upwards, the first sliding block 441 arranged on the upper end surface moves downwards under the pressure of a shock absorption medium, and at the moment, the first sliding block 441 can push the second sliding block 442 to move, so that the part of the necking section entering the throttle hole 447 is increased, the flow area of the throttle hole 447 is increased, a larger damping force is obtained, the vehicle bump is eliminated as soon as possible, and the comfort is improved; similarly, the first slider 441 is arranged at the lower end surface of the damping piston 440, and when the shock absorber 400 is pressed and the piston moves downwards, the first slider 441 arranged at the lower end surface is pressed by a damping medium to move upwards, so that the part of the necking part entering the throttle hole 447 is increased, the flow area of the throttle hole 447 is increased, a large damping force is obtained, the vehicle bump is eliminated as soon as possible, and the comfort is improved.
In the present embodiment, the arrangement of the second slider 442 intersecting the orifice 447 means that the second slider 442 can be inserted in a direction inclined or perpendicular to the axial direction of the orifice 447 such that the portion of the constricted section entering the orifice 447 is increased or decreased, i.e., the flow area of the orifice 447 can be changed.
As shown in fig. 4, a first spring 443 is connected between the first slider 441 and the damping piston 440, and the first spring 443 is a compression spring; a second spring 444 is connected between the second sliding block 442 and the damping piston 440, and the second spring 444 is a compression spring; the second spring 444 ensures that the inclined surface of the first slider 441 and the inclined surface of the second slider 442 are always in a state of abutting against each other, the first spring 443 can be pressed after the first slider 441 slides to help the first slider 441 to return, and the second slider 442 can also help the first slider 441 to return after the first slider 441 returns.
As shown in fig. 4, the adjusting mechanism further includes a check valve disposed at one end of the orifice 447, the check valve and the first slider 441 being disposed on both upper and lower end surfaces of the damping piston 440, respectively; wherein the check valve enables the damping medium to flow out of the orifice 447 only through the check valve and prevents the damping medium from flowing into the orifice 447 through the check valve from the outside; further enhancing the damping effect of the piston.
As shown in fig. 3 to 5, the damper piston 440 is provided with two throttle holes 447, two first slider blocks 441 and two second slider blocks 442 are provided, and each of the two second slider blocks 442 intersects with one throttle hole 447; at this time, check valves may be provided at the ends of both throttle holes 447.
As shown in fig. 4 and 5, two first sliders 441 are respectively disposed on upper and lower end surfaces of the damping piston 440; at this time, no matter the shock absorber 400 is under compression or tension, the piston can be subjected to the damping action of the shock absorber 400, so that the bumping generated when the automobile passes through a raised obstacle or a pit can be smoothed as soon as possible, and the comfort of the automobile is improved.
The pressure reducing valve may be a pressure reducing valve commonly used in the prior art, or as shown in fig. 4 and 5, the pressure reducing valve includes a housing connected to an end surface of the piston, a third slider 445 is disposed in the housing, and a third spring 446 is disposed between the third slider 445 and the housing; when the damping medium flows out of the throttle hole 447, the third slider 445 is subjected to the pressure of the damping medium to drive the third spring 446 to compress, when the piston is at rest, the third spring 446 drives the third slider 445 to close the throttle hole 447, and when the damping medium flows to the throttle hole 447 from the one-way valve side, the third slider 445 is subjected to the pressure of the damping medium to abut against the throttle hole 447, so that the damping medium cannot flow in, and the function of limiting the one-way flow is achieved.
As shown in FIG. 2, a pressure relief valve assembly 450 is also provided within shock absorber 400, wherein the structure of pressure relief valve assembly 450 may be referenced to the structure of other prior art shock absorbers 400.
Wherein, the cylinder body includes: an oil storage cylinder 412; a working cylinder 413 which is sleeved inside the oil storage cylinder 412 and communicated with the oil storage cylinder 412, and a piston is in sliding fit with the inner wall of the working cylinder 413; shock absorber 400 further comprises: a damping piston rod 430 connected with the damping piston 440; and the guide seat 420 seals the openings at the upper ends of the oil storage cylinder 412 and the working cylinder 413, and the damping piston rod 430 penetrates through the guide seat 420 and is in sliding fit with the guide seat 420.
The shock absorber 400 further comprises a dust cover 411, the dust cover 411 is connected with the shock absorbing piston rod 430, and the dust cover 411 is sleeved on the periphery of the oil storage cylinder barrel 412.
Referring to fig. 1, the present embodiment also provides a suspension assembly including: a lower swing arm 100; in the damper 400, the cylinder body is connected to the lower swing arm 100; the upper swing arm is connected with the piston; the spring support 200 is rotatably connected with the lower swing arm 100; and an air spring 300 disposed on the spring supporter 200.
The position relationship and the connection relationship between the shock absorber 400 and the air spring 300 can refer to the existing suspension structure in which the shock absorber 400 and the spring assembly are connected in parallel; wherein, the cylinder body lower extreme is provided with lower fixing base 460, and lower fixing base 460 is connected with lower swing arm 100.
It should be noted that the structure of the upper swing arm is not shown in fig. 1, and the structure of the upper swing arm can be referred to the existing independent suspension structure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A shock absorber, comprising:
a cylinder body;
a damping piston (440) capable of sliding up and down in the inner cavity of the cylinder body, wherein the damping piston (440) is provided with a throttle hole (447) which penetrates through the damping piston up and down;
and the adjusting mechanism is arranged inside the damping piston (440) and is used for adjusting the flow area of the throttling hole (447).
2. The shock absorber according to claim 1, wherein said adjustment mechanism comprises:
a first slider (441) disposed on an upper end surface or a lower end surface of the damping piston (440);
a second slider (442) disposed across the orifice (447), the second slider (442) including a constricted section capable of extending into the orifice (447);
the first sliding block (441) and the second sliding block (442) are provided with inclined surfaces capable of being abutted against each other.
3. Shock absorber according to claim 2, wherein a first spring (443) is connected between the first slider (441) and the damping piston (440), the first spring (443) being a compression spring.
4. The shock absorber according to claim 3, wherein a second spring (444) is connected between the second slider (442) and the damping piston (440), the second spring (444) being a compression spring.
5. The shock absorber according to claim 2, wherein the adjusting mechanism further comprises a check valve provided at one end of the orifice hole (447), the check valve and the first slider (441) being provided on both upper and lower end surfaces of the damping piston (440), respectively.
6. The damper according to claim 2, wherein two throttle holes (447) are formed in the damping piston (440), two of the first slider (441) and the second slider (442) are provided, and each of the two second sliders (442) is disposed to intersect with one throttle hole (447).
7. The shock absorber according to claim 6, wherein two first sliders (441) are respectively provided on upper and lower end surfaces of the damping piston (440).
8. The shock absorber according to claim 1, wherein the cylinder comprises:
an oil storage cylinder (412);
the working cylinder barrel (413) is sleeved inside the oil storage cylinder barrel (412) and communicated with the oil storage cylinder barrel (412), and the piston is in sliding fit with the inner wall of the working cylinder barrel (413);
the shock absorber (400) further comprises:
a damping piston rod (430) connected with the damping piston (440);
and the guide seat (420) is used for sealing openings at the upper ends of the oil storage cylinder barrel (412) and the working cylinder barrel (413), and the damping piston rod (430) penetrates through the guide seat (420) and is in sliding fit with the guide seat (420).
9. The shock absorber as claimed in claim 8, further comprising a dust cover (411), wherein the dust cover (411) is connected with the shock absorbing piston rod (430), and the dust cover (411) is sleeved on the outer periphery of the oil storage cylinder (412).
10. A suspension assembly, comprising:
a lower swing arm (100);
the shock absorber (400) of any one of claims 1 to 9, said cylinder being connected to said lower swing arm (100);
the upper swing arm is connected with the piston;
the spring support (200) is rotationally connected with the lower swing arm (100);
an air spring (300) disposed on the spring support (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556294.8U CN216045170U (en) | 2021-07-08 | 2021-07-08 | Shock absorber and suspension assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556294.8U CN216045170U (en) | 2021-07-08 | 2021-07-08 | Shock absorber and suspension assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045170U true CN216045170U (en) | 2022-03-15 |
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ID=80555510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121556294.8U Expired - Fee Related CN216045170U (en) | 2021-07-08 | 2021-07-08 | Shock absorber and suspension assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118705317A (en) * | 2023-03-27 | 2024-09-27 | 比亚迪股份有限公司 | Shock absorber piston, shock absorber and suspension system |
-
2021
- 2021-07-08 CN CN202121556294.8U patent/CN216045170U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118705317A (en) * | 2023-03-27 | 2024-09-27 | 比亚迪股份有限公司 | Shock absorber piston, shock absorber and suspension system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |