CN114033827B - Positioning guide device and large-cylinder-diameter double-cylinder shock absorber - Google Patents
Positioning guide device and large-cylinder-diameter double-cylinder shock absorber Download PDFInfo
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- CN114033827B CN114033827B CN202111121141.5A CN202111121141A CN114033827B CN 114033827 B CN114033827 B CN 114033827B CN 202111121141 A CN202111121141 A CN 202111121141A CN 114033827 B CN114033827 B CN 114033827B
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- cylinder
- valve seat
- positioning ring
- positioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to the technical field of vibration dampers, and particularly discloses a vibration damper which comprises the following components in percentage by weight: a positioning and guiding device comprises a positioning ring which is in a circular ring shape and is provided with an inner hole, and a protruding part which is arranged on the outer side of the positioning ring; the bulge is L-shaped and comprises an outer turning plate and a connecting plate, wherein the connecting plate is connected with the outer side of the positioning ring, and the outer turning plate is arranged on one side of the connecting plate away from the positioning ring. The invention discloses a large-cylinder-diameter double-cylinder shock absorber; the invention can effectively ensure that the working cylinder does not skew after being placed in the liquid storage cylinder; the automatic alignment can be realized in the assembly process, the situation that the working cylinder deflects is avoided, and the assembly quality is improved.
Description
Technical Field
The invention relates to the technical field of positioning and guiding of vibration dampers, in particular to a positioning and guiding device and a large-cylinder-diameter double-cylinder vibration damper.
Background
The shock absorber is one of key parts of the vehicle, bears a plurality of important performances of the vehicle, elastically supports the vehicle body and the load mass, determines the bearing capacity of the vehicle, ensures the comfort and the stability of the running of the vehicle, improves the reliability and the service life of each part of the vehicle.
The currently mainly used vibration dampers are mostly hydraulic cylinder type vibration dampers, which can be divided into a single cylinder structure and a double cylinder structure according to the structure, and in the functional structure of the vibration damper, the double cylinder structure vibration damper is composed of a working cylinder and a liquid storage cylinder, wherein a piston valve system on a piston rod assembly is arranged in the working cylinder, an upper port part of the working cylinder is matched and connected with a shaft neck of a guide seat, the upper port part of the working cylinder is matched and positioned with the inner diameter of the liquid storage cylinder through the outer diameter of the guide seat, a core part base valve seat in the base valve system is arranged at a lower port part of the working cylinder and matched and connected with the lower port part of the working cylinder, the base valve seat is matched and connected with an inner working surface of a bottom cover and the structure of the base valve seat and is used as a positioning reference, and the positioning connection is carried out through the outer diameter surface of the bottom cover and the inner diameter surface of the liquid storage cylinder, so that in the double cylinder structure vibration damper, the upper end is in series connection through the positioning and connection function of the structure shape and the guide seat and the size of the guide seat.
However, in some large-bore dual-cylinder shock absorber products, the size of the liquid storage cylinder is much larger than that of the working cylinder due to the special structure in the product, for example, the inner diameter of the working cylinder is 50mm, the outer diameter of the liquid storage cylinder is 90mm, when the base valve and the working cylinder assembly are placed in the liquid storage cylinder assembly, due to the large space between the inner cylinder and the outer cylinder, the base valve and the working cylinder assembly are not easy to be quickly and accurately placed on the positioning surface of the bottom cover part of the machining structure, and deflection occurs when positioning often, so that the assembly quality of the shock absorber assembly is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing the positioning and guiding device which can effectively ensure that the working cylinder does not skew after being placed in the liquid storage cylinder; the large-cylinder-diameter double-cylinder shock absorber can be automatically aligned in the assembly process, the working cylinder is prevented from being inclined, and the assembly quality is improved.
The invention solves the technical problems by adopting the following solution:
in one aspect of the present invention,
a positioning and guiding device comprises a positioning ring which is in a circular ring shape and is provided with an inner hole, and a protruding part which is arranged on the outer side of the positioning ring;
the bulge is L-shaped and comprises an outer turning plate and a connecting plate, wherein the connecting plate is connected with the outer side of the positioning ring, and the outer turning plate is arranged on one side of the connecting plate away from the positioning ring.
In some possible embodiments, the external flap is arranged parallel to the positioning ring.
In some possible embodiments, the connecting plates are respectively connected with the outer turning plate and the positioning ring vertically and smoothly.
In some possible embodiments, the plurality of protruding parts are identical in structure, and the plurality of protruding parts are uniformly arranged along the circumferential direction of the positioning ring; the outer turning plates are arc-shaped at one side far away from the connecting plate and form a concentric circle concentric with the inner hole.
In some possible embodiments, the number of protrusions is three.
On the other hand, in the other hand,
a large-bore double-cylinder shock absorber comprises a liquid storage cylinder, a working cylinder sleeved in the liquid storage cylinder, a bottom cover, a bottom valve seat arranged on the bottom cover and a positioning guide device as described above;
the bottom valve seat is provided with a bottom valve seat boss coaxial with the liquid storage cylinder, and an inner hole of the positioning ring is sleeved on the outer side of the bottom valve seat boss and is in small clearance fit with the bottom valve seat boss; the base valve seat boss and the base valve seat form a step end face, and the positioning ring is arranged on the step end face; the outer turning plate and the connecting plate are positioned between the liquid storage cylinder and the working cylinder.
In some possible embodiments, an end of the working cylinder near the bottom valve seat is abutted with the positioning ring.
In some possible embodiments, the external flaps are in a small clearance fit with the interior wall of the cartridge; the working cylinder sleeve is arranged on the outer side of the base valve seat boss and is in interference fit with the base valve seat boss.
In some possible embodiments, the bottom cover is provided with a spherical groove, and the bottom valve seat is provided with spherical surfaces with the same size of the spherical groove.
In some possible embodiments, the clearance between the inner bore and the base valve seat boss is 0.02mm-0.07mm; the clearance between the outer turning plate and the liquid storage cylinder is 0.2mm-0.3mm.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the positioning ring is sleeved on the outer side of the boss of the bottom valve seat, the position of the positioning ring is fixed through the working cylinder, and the positioning ring is guided in the whole assembly process through the outer turning plate, so that the working cylinder is effectively prevented from being inclined in the assembly process;
when the assembly is arranged in the liquid storage cylinder, the inner hole of the positioning guide device and the flanging outer turning plate are connected in series to form radial connection between the vibration damper working cylinder and the liquid storage cylinder in the lower end area of the vibration damper structure, so that the vibration damper working cylinder assembly can not be askew after being arranged in the liquid storage cylinder assembly, and the assembly quality of the large-cylinder-diameter double-cylinder vibration damper assembly is greatly improved;
according to the positioning guide device, the outer turning plate extends to one side in the liquid storage barrel to serve as the extension of the part bottom structure, so that interference limitation possibly caused by the height structure of the bottom cover part can be effectively avoided, and the positioning guide device can continue to extend in the radial direction to obtain an effective space.
Drawings
FIG. 1 is a schematic view of a positioning guide according to the present invention;
FIG. 2 is a front elevational view of the positioning guide of the present invention;
FIG. 3 is a schematic cross-sectional view of a large bore dual-tube shock absorber of the present invention;
FIG. 4 is a schematic diagram of the connection relationship among the bottom valve seat, the bottom cover, the positioning guide device and the working cylinder;
wherein: 11. a positioning ring; 12. a connecting plate; 13. an outer turning plate; 14. an inner bore; 21. a reservoir; 22. a working cylinder; 23. a bottom valve seat; 24. and (3) a bottom cover.
Detailed Description
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Reference to "first," "second," and similar terms in this application does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present application, "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in detail below.
As shown in fig. 1-4:
in one aspect of the present invention,
the positioning and guiding device comprises a positioning ring 11 which is in a circular ring shape and is provided with an inner hole 14, and a protruding part arranged on the outer side of the positioning ring 11;
the protruding portion is L-shaped and comprises an outer turning plate 13 and a connecting plate 12, wherein the connecting plate 12 is connected with the outer side of the positioning ring 11, and the outer turning plate 13 is arranged on one side, away from the positioning ring 11, of the connecting plate 12.
In some possible embodiments, the external flaps 13 are arranged parallel to the positioning collar 11.
In some possible embodiments, the connection plate 12 is connected perpendicularly to the outer flap 13 and the positioning ring 11, respectively, and is smoothly transitioned.
In some possible embodiments, the plurality of protruding parts are identical in structure, and the plurality of protruding parts are uniformly arranged along the circumferential direction of the positioning ring 11; the outer flaps 13 are arc-shaped on the side far away from the connecting plate 12 and form a concentric circle concentric with the inner hole 14.
As shown in fig. 1 and 2, the protruding parts are uniformly arranged on the outer side of the positioning ring 11 and are used for being matched with the inner wall of the liquid storage cylinder 21, so that the assembly guiding and positioning of the working cylinder 22 can be realized, the working cylinder 22 is effectively prevented from being inclined in the assembly process, and the working cylinder 22 and the liquid storage cylinder 21 cannot be coaxial.
In some possible embodiments, the number of protrusions is three.
Preferably, the thicknesses of the outer turning plate 13, the connecting plate 12 and the positioning plate are 0.8mm.
Preferably, the coaxiality tolerance value of the inner hole 14 and the outer turning plate 13 is D, and D is less than or equal to 0.1mm.
As shown in fig. 1 and 2; preferably, the cross section of the connection plates 12 is in an arc-shaped structure, and the connection plates 12 form a concentric circle concentric with the inner hole 14, wherein the outer diameter of the circle formed by the outer turning plate 13 is larger than the outer diameter of the circle formed by the connection plates 12.
The outer turning plate 13 and the positioning ring 11 form two circular ring structures, and the outer turning plate 13 forms a circular ring structure which extends along the axis of the positioning ring 11 under the action of the connecting plate 12, so that a positioning guide device is formed.
On the other hand, in the other hand,
the large-bore double-cylinder shock absorber comprises a liquid storage cylinder 21, a working cylinder 22 sleeved in the liquid storage cylinder 21, a bottom cover 24, a bottom valve seat 23 arranged on the bottom cover 24 and a positioning guide device as described above;
the bottom valve seat 23 is provided with a bottom valve seat boss coaxial with the liquid storage cylinder 21, and the inner hole 14 is sleeved outside the bottom valve seat boss and is in small clearance fit with the bottom valve seat boss; the base valve seat boss and one end of the base valve seat 23, which is close to the working cylinder 22, form a step end face, and the positioning ring 11 is arranged on the step end face; the external flap 13 and the connecting plate 12 are located between the reservoir 21 and the working cylinder 22. The outside of the retainer 11 is also located between the reservoir 21 and the cylinder 22.
The inner hole 14 is in small clearance fit with the boss of the bottom valve seat, so that the positioning accuracy requirement of the whole device is not affected, and the process operation is simplified.
Preferably, the ratio of the inner diameter of the cylinder 22 to the outer diameter of the reservoir 21 is 1.8;
in some possible embodiments, in order to make the installation of the positioning collar 11 more stable;
one end of the working cylinder 22, which is close to the bottom valve seat 23, is abutted against the positioning ring 11.
In some possible embodiments, assembly guidance can be achieved by the external flap 13 during assembly;
the outer turning plate 13 is in small clearance fit with the inner wall of the liquid storage barrel 21;
so that the retainer ring 11 does not move in the axial direction of the cylinder 22;
the working cylinder 22 is sleeved on the outer side of the base valve seat boss and is in interference fit with the base valve seat boss.
In some possible embodiments, to effectively achieve automatic alignment of the base valve seat 23;
the bottom cover 24 is provided with a spherical groove, and the bottom valve seat 23 is provided with spherical surfaces with the same size as the spherical groove.
The spherical groove is provided on the side of the bottom cover 24 near the reservoir 21.
In some possible embodiments, the clearance between the bore 14 and the base valve seat boss is 0.02mm-0.07mm; the clearance between the outer turning plate 13 and the liquid storage cylinder 21 is 0.2mm-0.3mm.
During assembly, the inner hole 14 is in small clearance fit with the boss of the bottom valve seat, the end face of one side, far away from the outer turning plate 13, of the positioning ring 11 is in abutting fit with the end face of the step, and one end of the working cylinder 22 is sleeved on the outer side of the boss of the bottom valve seat and in interference fit with the outer side of the boss of the bottom valve seat; the working cylinder 22, the positioning guide device and the bottom valve seat 23 form a stable structural assembly, when the assembly is arranged in the liquid storage cylinder 21, the radial connection between the working cylinder 22 and the liquid storage cylinder 21 in the lower end area of the shock absorber structure is connected in series by virtue of the inner hole 14 and the flanging outer turning plate 13, so that the shock absorber working cylinder 22 assembly can not be askew after being arranged in the liquid storage cylinder 21 assembly, and the assembly quality of the large-diameter double-cylinder shock absorber assembly is greatly improved;
the positioning guide device is not effectively applied in the true sense in the internal damping structure of the shock absorber;
the outer side of the outer turning plate 13 is in small clearance fit with the inner wall of the working cylinder 22 and is coaxially arranged with the working cylinder 22, and by the arrangement, the coaxiality of the inner hole 14 and the outer turning plate 13 can be utilized to lead the structural assembly formed by the working cylinder 22, the positioning ring 11 and the bottom valve seat 23 to carry out structural guide of the whole assembly process by depending on the outer side part of the outer turning plate 13 in the process of loading the inner diameter of the liquid storage cylinder 21;
other structures of the large-bore double-cylinder shock absorber are the same as those of the large-bore double-cylinder shock absorber in the prior art, and the internal structures thereof are not described in detail herein;
during assembly, the positioning ring 11 is sleeved on the outer side of the base valve seat boss through the inner hole 14, then the position of the positioning ring 11 is fixed through interference fit between the inner side of the working cylinder 22 and the base valve seat boss, and after the positioning ring 11, the positioning ring 11 and the base valve seat boss are installed, a stable structural assembly is formed;
then the bottom valve seat 23 and the components thereof are arranged in the spherical groove, and the bottom of the bottom valve seat 23 is provided with a spherical surface with the same size as the spherical surface, so that the automatic alignment of the bottom valve seat 23 and the components thereof can be quickly realized;
the outer turning plate 13 is in small clearance fit with the inner wall of the liquid storage cylinder 21, so that when the working cylinder 22 can only enter the liquid storage cylinder 21 under the condition of ensuring the coaxiality with the liquid storage cylinder 21, if skew occurs, one outer turning plate 13 is contacted with the inner wall of the liquid storage cylinder 21, so that the working cylinder 22 is blocked and cannot be installed; only when the outer turning plate 13 is matched with the inner wall of the liquid storage cylinder 21 in a small clearance, the working cylinder 22 can be completely inserted into the liquid storage cylinder 21 for assembly; the guiding of the working cylinder 22 is effectively realized, and the influence on the whole assembly quality due to the deflection of the working cylinder 22 during assembly is avoided.
Example 1:
as shown in fig. 3, a large-diameter double-cylinder shock absorber comprises a liquid storage cylinder 21, a working cylinder 22 sleeved in the liquid storage cylinder 21 and coaxial with the liquid storage cylinder 21, a piston rod assembly arranged on the cylinder 22, a bottom cover 24 arranged at one end of the liquid storage cylinder 21 and provided with a spherical groove at one end close to the working cylinder 22, a bottom valve seat 23 arranged in the spherical groove and provided with a cylindrical bottom valve seat boss at one side close to the working cylinder 22, and a positioning and guiding device arranged on the bottom valve seat 23; the positioning ring 11 in the positioning guide device is sleeved on a boss of a cylindrical positioning base valve seat, and the outer side of the positioning ring 11 stretches into an annular cavity formed by the working cylinder 22 and the liquid storage cylinder 21; the connecting plate 12 is connected with the outer side of the positioning ring 11, and the length direction of the connecting plate is parallel to the axial direction of the working cylinder 22; the vertical plate is connected with one end of the connecting plate 12 close to the working cylinder 22; and the length direction thereof is mutually perpendicular to the axial direction of the working cylinder 22; the length of the connecting plate 12 along the axial direction of the working cylinder 22 is 12mm; the outer side of the outer turning plate 13 far away from the working cylinder 22 is in small clearance fit with the inner wall of the liquid storage cylinder 21, and the clearance is 0.2mm-0.3mm; the outer sides of the inner hole 14 and the cylindrical bottom valve seat boss are in small clearance fit, and the clearance is that: 0.02mm-0.07mm; the coaxiality tolerance value of the circle formed by the connecting line at the outer side of the outer turning plate 13 and the inner hole 14 is E, and E is less than or equal to 0.1mm; the protruding parts formed by the outer turning plate 13 and the connecting plate 12 are 3 groups and are uniformly arranged along the circumferential direction of the positioning ring 11.
The ratio of the inner diameter of the cylinder 22 to the outer diameter of the reservoir tube 21 was 1.8.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (8)
1. The positioning guide device is characterized by comprising a positioning ring which is ring-shaped and provided with an inner hole, and a protruding part arranged on the outer side of the positioning ring;
the bulge part is L-shaped and comprises an outer turning plate and a connecting plate, wherein the connecting plate is connected with the outer side of the positioning ring, and the outer turning plate is arranged on one side of the connecting plate away from the positioning ring; the connecting plates are respectively and vertically connected with the outer turning plate and the positioning ring and are in smooth transition;
the plurality of the convex parts are uniformly arranged along the circumferential direction of the positioning ring; the outer turning plates are arc-shaped at one side far away from the connecting plate and form a concentric circle concentric with the inner hole; the outer turning plates are equal in number and are arranged in one-to-one correspondence with the connecting plates, and through grooves are formed between two adjacent groups of connecting plates; the plurality of connecting plates form a concentric circle concentric with the inner hole, wherein the outer diameter of the circle formed by the outer turning plates is larger than the outer diameter of the circle formed by the connecting plates.
2. A positioning guide according to claim 1, wherein the outer flap is arranged parallel to the positioning collar.
3. A positioning guide according to claim 1, wherein the number of projections is three.
4. A large-bore double-cylinder shock absorber, comprising a liquid storage cylinder, a working cylinder sleeved in the liquid storage cylinder, a bottom cover, a bottom valve seat arranged on the bottom cover, and a positioning guide device as claimed in any one of claims 1-3;
the bottom valve seat is provided with a bottom valve seat boss coaxial with the liquid storage cylinder, and an inner hole of the positioning ring is sleeved on the outer side of the bottom valve seat boss and is in small clearance fit with the bottom valve seat boss; the base valve seat boss and the base valve seat form a step end face, and the positioning ring is arranged on the step end face; the outer turning plate and the connecting plate are positioned between the liquid storage cylinder and the working cylinder.
5. The large diameter dual cylinder shock absorber according to claim 4, wherein an end of said working cylinder adjacent to said base seat is in abutment with said retainer ring.
6. The large diameter dual cylinder shock absorber of claim 5 wherein said outer flap is in a small clearance fit with the inner wall of the reservoir; the working cylinder sleeve is arranged on the outer side of the base valve seat boss and is in interference fit with the base valve seat boss.
7. A large diameter dual cylinder shock absorber according to any of claims 4 to 6 wherein said bottom cap is provided with a spherical recess and said bottom seat is provided with spherical surfaces of the same size as the spherical recess.
8. The large bore dual cylinder shock absorber of claim 6 wherein said bore to base seat boss clearance is 0.02mm to 0.07mm; the clearance between the outer turning plate and the liquid storage cylinder is 0.2mm-0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121141.5A CN114033827B (en) | 2021-09-24 | 2021-09-24 | Positioning guide device and large-cylinder-diameter double-cylinder shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121141.5A CN114033827B (en) | 2021-09-24 | 2021-09-24 | Positioning guide device and large-cylinder-diameter double-cylinder shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114033827A CN114033827A (en) | 2022-02-11 |
| CN114033827B true CN114033827B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111121141.5A Active CN114033827B (en) | 2021-09-24 | 2021-09-24 | Positioning guide device and large-cylinder-diameter double-cylinder shock absorber |
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| CN (1) | CN114033827B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1516836A (en) * | 1974-08-22 | 1978-07-05 | Woodhead Ltd J | Hydraulic shock absorbers |
| CN201810714U (en) * | 2010-07-05 | 2011-04-27 | 南阳淅减汽车减振器有限公司 | Shock absorber with centring piece |
| CN203685961U (en) * | 2013-12-11 | 2014-07-02 | 隆昌山川精密焊管有限责任公司 | Radial positioning ring of working cylinder of shock absorber |
| CN204677671U (en) * | 2015-03-24 | 2015-09-30 | 隆昌山川精密焊管有限责任公司 | Novel bottom valve seat and vehicle shock absorber |
| CN205155009U (en) * | 2015-10-20 | 2016-04-13 | 惠州比亚迪电池有限公司 | Vibration damper |
| CN206495933U (en) * | 2016-11-02 | 2017-09-15 | 芜湖天佑汽车技术有限公司 | Guiding mechanism inside a kind of damper |
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2021
- 2021-09-24 CN CN202111121141.5A patent/CN114033827B/en active Active
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