CN114810915A - Sealing method for liquid flowing space of hydraulic bushing - Google Patents
Sealing method for liquid flowing space of hydraulic bushing Download PDFInfo
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- CN114810915A CN114810915A CN202210444611.XA CN202210444611A CN114810915A CN 114810915 A CN114810915 A CN 114810915A CN 202210444611 A CN202210444611 A CN 202210444611A CN 114810915 A CN114810915 A CN 114810915A
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- Prior art keywords
- sealing
- rubber
- hydraulic bushing
- rubber body
- flow channel
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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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
- F16F2230/00—Purpose; Design features
- F16F2230/30—Sealing arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model provides a sealing method in hydraulic pressure bush liquid flow space, the flow space of liquid is including setting up the liquid cavity in rubber master spring both sides, the runner of setting at the outer lateral wall of the annular runner body that has the breach, and set up the bypass in the rubber body outside of keeping away from the runner body, the sealing method in flow space is including the structural matching of design runner body structure and rubber body and makes interference fit between runner body and the outer tube, interference fit between the sealing ring and the outer tube of the structure as an organic whole of periphery setting and rubber body at the both ends department of the rubber body of rubber master spring, and with outer tube both ends department turn-ups and rubber body are attached. The sealing rings which are integrally formed with the rubber body are arranged on the outer peripheral sides of the two ends of the rubber body and are matched with the inward flanging of the outer pipe, so that leakage of the hydraulic bushing is avoided, the sealing rings cannot shift in the assembling process of the hydraulic bushing in the manner that the sealing rings and the rubber body are integrally formed, and the overall performance is guaranteed.
Description
Technical Field
The invention relates to a sealing method, in particular to a sealing method for a liquid flowing space of a hydraulic bushing, and belongs to the technical field of vibration reduction and noise reduction.
Background
The hydraulic bushing is a vibration reduction part widely applied to automobiles, and compared with the traditional rubber bushing, the hydraulic bushing can provide larger viscous damping characteristic in a specific frequency range, and improves the driving stability and safety of the automobiles. The rubber main spring structure in the hydraulic bushing mainly meets the requirement of static rigidity of the hydraulic bushing in all directions, and the structure of the liquid cavity in the rubber main spring provides equivalent piston area and volume flexibility. In the use process of the hydraulic bushing, in order to ensure the stability of the performance of the hydraulic bushing, the contact surface between the flow channel and the outer pipe cannot have liquid flow, and the whole hydraulic bushing does not leak liquid outwards. If liquid flows on the contact surface between the flow channel and the outer pipe, the performance of the hydraulic bushing is uncontrollable; if the hydraulic bushing leaks outwards, the product can be failed. When the center deviation of the inner pipe and the outer pipe is realized, the volumes of two liquid chambers of the rubber main spring are changed, liquid flows from one chamber to the other chamber through the flow channel, energy generated by vibration is attenuated through inertia loss, friction and the like of liquid flowing, the attenuated energy generates heat, the generated heat and impact load borne by the liquid increase the sealing difficulty of the liquid, and the single sealing structure is difficult to realize the sealing of the liquid.
Like application number CN201921886875.0, the utility model patent of name "hydraulic pressure bush, swing arm assembly and car" sets up sealing rubber through the inboard at the hydraulic pressure bush outer tube, makes rubber main spring and sealing rubber laminating avoid hydraulic pressure bush weeping. However, how to arrange the sealing rubber at the inner side of the outer pipe is not mentioned in the method, the sealing performance between the sealing rubber and the outer pipe is doubtful, and the sealing method is inconvenient to install, because the internal structure of the hydraulic bushing is pressed in the outer pipe, the stability of the sealing rubber is difficult to guarantee in the pressing process, the attaching degree of the sealing rubber and the rubber main spring is difficult to guarantee, and the sealing effect is limited.
For another example, CN201910815521.5, entitled "sealing method and structure of liquid cavity in liquid rubber composite node", is characterized in that an annular groove is formed on the outer side of an arc plate and at the periphery of a cover plate through hole, and a cover plate sealing ring is placed in the groove. The inner side of the outer runner pipe is in interference fit with the outer side of the cover plate, so that the inner side of the outer runner pipe is tightly pressed on the sealing ring of the cover plate, a liquid channel sealing structure is formed, and liquid in the liquid cavity is prevented from flowing out from a gap between the outer side of the cover plate and the inner side of the outer runner pipe. The two ends of the whole outer pipe extend out of the top end of the runner outer pipe, the extending part of the whole outer pipe 1 is bent towards the top end of the middle spacer sleeve to form an outer pipe elbow, a folding cavity is formed among the whole outer pipe, the runner outer pipe and the middle spacer sleeve, and an end sealing ring is arranged in the folding cavity. This scheme also sets up solitary sealing washer in compound node, needs to set up extra structure and places this solitary sealing washer, also need additionally pay attention to not destroying the sealing washer in the installation moreover.
Disclosure of Invention
The invention provides a method for sealing a liquid flowing space of a hydraulic bushing, aiming at solving the problem that the sealing effect of the current hydraulic bushing is difficult to ensure, so that the liquid in the hydraulic bushing only flows in the designed and specified flowing space, and the outward leakage phenomenon cannot occur.
The technical means adopted by the invention to solve the problems are as follows: the utility model provides a sealing method in hydraulic pressure bush liquid flow space, the flow space of liquid is including setting up the liquid cavity in rubber master spring both sides, the runner of setting at the outer lateral wall of the annular runner body that has the breach, and set up the bypass in the rubber body outside of keeping away from the runner body, the sealing method in flow space is including the structural matching of design runner body structure and rubber body and makes interference fit between runner body and the outer tube, interference fit between the sealing ring and the outer tube of the structure as an organic whole of periphery setting and rubber body at the both ends department of the rubber body of rubber master spring, and with outer tube both ends department turn-ups and rubber body are attached.
Further, the matching of the flow channel body structure and the rubber body structure means that a protruding structure is arranged on the inner side of the flow channel body close to the gap of the flow channel body and matched with the window side wall of the rubber body, and the protruding structure of the flow channel body is abutted against the window side wall.
Furthermore, the interference magnitude between the outer wall of the flow channel body and the inner wall of the outer pipe is 0.5-1.0 mm.
Further, the width of the seal ring is set to 2-5 mm.
Further, more than two sealing rings are respectively arranged on the periphery of two ends of the rubber body.
Further, the distance between two adjacent sealing rings is 5-10 mm.
Further, a sealing column is arranged between two adjacent sealing rings to connect the two sealing rings.
Further, the width of the sealing column is 2-5 mm.
Further, the number of the sealing columns between two adjacent sealing rings is 4-8.
Furthermore, the interference magnitude between the sealing ring and the inner wall of the outer pipe is 0.5-1.0 mm.
Further, the thickness of the sealing ring exceeding the rubber body is 0.5-1.0 mm.
Furthermore, the thickness of the sealing column exceeding the rubber body is 0.5-1.0 mm.
Further, the two ends of the outer tube are turned inwards by 20-40 o 。
The invention has the beneficial effects that:
1. according to the invention, the flowing space of the liquid is set to a mode of connecting the two liquid cavities by adopting the flow channel and the bypass, the viscous liquid is prevented from flowing between the contact surfaces of the flow channel body outside the flow channel and the inner wall of the outer pipe through the interference between the flow channel body and the inner wall of the outer pipe, and the performance of the hydraulic bushing is reliably ensured; simultaneously through the periphery side setting at rubber body both ends department with the sealing ring of rubber body integrated into one piece and the inside flanging cooperation of outer tube, avoid hydraulic bushing weeping, this kind of sealing ring can guarantee with rubber body integrated into one piece's mode moreover that the sealing ring can not shift in the assembling process of hydraulic bushing, guarantees the wholeness ability.
2. The sealing effect is further ensured by arranging more than two sealing rings at each end of the rubber body; and meanwhile, the sealing columns are adopted to connect adjacent sealing rings, so that the strength of the sealing rings is improved, and the sealing rings are prevented from being damaged in the press fitting process of the hydraulic bushing.
Drawings
FIG. 1 is a schematic view of an overall structure of a hydraulic bushing according to an embodiment;
FIG. 2 is a schematic radial cross-sectional view of FIG. 1;
FIG. 3 is a schematic axial cross-sectional view of the hydraulic bushing of FIG. 2, shown in an upward direction;
FIG. 4 is a schematic view of the structure of FIG. 1 with the outer tube removed;
FIG. 5 is a schematic view of a main spring according to one embodiment;
FIG. 6 is an enlarged view of a portion of FIG. 5;
FIG. 7 is a schematic diagram of a fluid structure according to one embodiment;
in the figure: 1. the device comprises an outer pipe, 100 rubber main springs, 2 inner pipes, 3 inner cages, 4 rubber bodies, 41 window side walls, 42 sealing rings, 43 sealing columns, 44 positioning columns, 5 flow channel bodies, 51 flow channels, 52 notches, 53 communication holes, 54 protrusion structures, 55 positioning holes, 6 rubber stoppers, 7 viscous liquid, 8 bypasses and 9 liquid cavities.
Detailed Description
The invention is further described below with reference to the accompanying drawings. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example one
As shown in fig. 1, the hydraulic node of the present embodiment includes, as viewed from the outside, an outer tube 1 and a main rubber spring 100 press-fitted inside the outer tube 1. As shown in fig. 2 and 3, the rubber main spring 100 includes an inner tube 2 and an inner cage 3 integrally connected by vulcanization of a rubber body 4, and a flow path body 5 and a rubber stopper 6 are provided between the rubber main spring 100 and the outer tube 1. As shown in fig. 5, the rubber main spring 100 has windows at both sides thereof, and when the rubber main spring 100 is press-fitted to the outer tube 1, the windows are located in a direction of a neutral direction of the hydraulic bushing, and a direction perpendicular to the neutral direction is a real direction of the hydraulic bushing. As shown in fig. 2 and 3, the rubber stopper 6 is provided in the hollow of the hydraulic bushing, and the window of the hollow becomes the liquid cavity 9 of the viscous liquid 7. As shown in fig. 7, the flow path body 5 is a ring structure with a notch 52, a flow path 51 is provided on the outer side wall of the flow path body 5, when the flow path body 5 is mounted on the rubber spring 100, the notch 52 of the flow path body 5 is located at the real position of the hydraulic bushing, and a communication hole 53 is further provided on the flow path 51 to communicate the flow path 51 with the liquid cavity 9. As shown in fig. 4, a bypass 8 for passing the viscous liquid 7 is provided on the outer side wall of the rubber body 4 at the notch 52 of the flow path body 5.
In this embodiment, the flow space for the viscous liquid 7 includes the bypass 8-the liquid cavity 9-the flow passage 51-the liquid cavity 9, forming an overall annular flow structure. In order to ensure the performance of the whole hydraulic bushing, it is ensured that the viscous liquid 7 flowing in the flow passage 51 does not overflow to the joint of the flow passage body 5 and the outer tube 1, and the viscous liquid 7 in the whole flow space of the hydraulic bushing does not leak to the outside.
As shown in fig. 7, a protrusion structure 54 is disposed on an inner wall of the flow channel body 5 near the notch 52, when the flow channel body 5 is installed on the rubber main spring 100, the protrusion structure 54 abuts against the window sidewall 41 of the rubber body 4, the rubber body 4 provides a pushing force for the flow channel body 5 through the window sidewall 41, so that the flow channel body 5 expands, an interference fit is formed between an outer sidewall of the flow channel body 5 and an inner sidewall of the outer tube 1, an interference amount is 0.5-1.0mm, an interaction force is established between an outer side of the flow channel body 5 and an inner side of the outer tube 1, so that the flow channel body 5 and the outer tube 1 are firmly attached to each other, it is ensured that the viscous liquid 7 flowing in the flow channel 51 does not overflow in a working process of the hydraulic bushing, and the performance of the entire hydraulic bushing is stable. Meanwhile, the runner body 5 is provided with a positioning hole 55 at a position avoiding the runner 51 thereof, correspondingly, the rubber main spring 100 is provided with a positioning column 44 matched with the positioning hole 55, when the rubber stopper 6 is installed on the runner body 5 during installation, the positioning column 44 penetrates through the positioning hole 55, so that the runner body 5 and the rubber main spring 100 are combined into a whole, the approximate relative position between the runner body 5 and the rubber main spring 100 is determined, the pushing between the protrusion structure 54 and the window side wall 41 is matched, the correct relative position between the runner body 5 and the outer tube 1 in the press-fitting process is ensured, and the interference fit between the runner body 5 and the outer tube 1 after the press-fitting is also ensured.
As shown in fig. 5, the rubber body 4 at both ends of the rubber main spring 100 is provided with annular sealing rings 42 on the outer periphery thereof, so that the sealing rings 42 and the outer tube 1 are in interference fit, the interference is 0.5-1.0mm, preferably more than two sealing rings are provided at each end, in this embodiment, two sealing rings are provided, and the number of the sealing rings may be selected according to the size and performance requirements of the hydraulic bushings. The width of each sealing ring 42 is selected to be 2-5mm to ensure strength and installation, and if the width of a single sealing ring 42 is too small, the sealing ring 42 is easily damaged during the process of demolding the rubber main spring 100 from a vulcanization mold and during the process of assembling the rubber main spring 100 with the outer tube 1; if the width of the single sealing ring 42 is too large, it may cause difficulty in assembling the rubber main spring 100 with the outer tube 1. The distance between two adjacent sealing rings 42 is set to be 5-10mm, so that redundant rubber can be freely deformed in the interference assembly process of the rubber main spring 100 and the outer pipe, smooth press fitting is guaranteed, and excessive stacking of the rubber is avoided. As shown in fig. 6, the thickness H of the seal ring 42 beyond the rubber body 4 is set to 0.5 to 1.0 mm. Meanwhile, a sealing column 43 is arranged between the adjacent sealing rings 42 to connect the two sealing rings 42, so that the strength of the sealing rings 42 is enhanced, and the sealing rings 42 are not easily damaged in the demolding and press-fitting processes. The number of the sealing columns 43 between two adjacent sealing rings 42 is set to be 4-8, and when the number of the sealing columns 43 is too small, the reinforcing effect on the sealing rings 42 is limited, and the use requirement cannot be met; when the number is too large, the assembling process between the rubber main spring 100 and the outer tube 1 becomes difficult, and the design of the lateral demolding of the vulcanization mold is limited. Similarly, the width of the sealing post 43 is also selected to be 2 to 5mm to secure strength and mounting, and the thickness H of the sealing post 43 beyond the rubber body 4 is also set to be 0.5 to 1.0 mm.
In addition, after the rubber main spring 100 is pressed on the outer pipe 1, the two ends of the outer pipe 1 are turned inwards, the angle of the turned edges is 20-40 degrees, the matching of the rubber body 4 and the outer pipe 1 is further enhanced, outward leakage of the hydraulic bushing is thoroughly avoided, meanwhile, the upper end part and the lower end part of the outer pipe 1 are turned inwards, the axial pressing-off force of the outer pipe 1 and the rubber main spring 100 is increased, and the stability of the hydraulic bushing in the actual use process is ensured.
The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (10)
1. A method for sealing a liquid flowing space of a hydraulic bushing is characterized in that: the sealing method of the liquid flow space comprises the steps that the liquid cavity (9) is arranged on two sides of the rubber main spring (100), the flow channel (51) is arranged on the outer side wall of the annular flow channel body (5) with the notch (52), and the bypass (8) is arranged on the outer side of the rubber body (4) far away from the flow channel body (5), the flow channel body (5) and the outer pipe (1) are in interference fit through structural matching of the flow channel body (5) and the rubber body (4), the sealing rings (42) and the outer pipe (1) which are in an integral structure with the rubber body (4) are arranged on the peripheries of two ends of the rubber body (4) of the rubber main spring (100), and the two ends of the outer pipe (1) are connected with the rubber body (4) in an inward flanging mode.
2. A method of sealing a fluid flow space of a hydraulic bushing according to claim 1, wherein: the matching of the structure of the flow channel body (5) and the structure of the rubber body (4) means that a convex structure (54) is arranged at the inner side of the position of the flow channel body (5) close to the gap (52) of the flow channel body and matched with the window side wall (41) of the rubber body (4), and the convex structure (54) of the flow channel body (5) is propped against through the window side wall (41).
3. A method of sealing a fluid flow space of a hydraulic bushing according to claim 1, wherein: the interference magnitude between the outer wall of the flow channel body (5) and the inner wall of the outer pipe (1) is 0.5-1.0 mm.
4. A method of sealing a fluid flow space of a hydraulic bushing according to claim 1, wherein: the width of the sealing ring (42) is set to be 2-5 mm.
5. A method of sealing a fluid flow space of a hydraulic bushing according to claim 1, wherein: more than two sealing rings (42) are respectively arranged on the periphery of the two ends of the rubber body (4).
6. A method of sealing a fluid flow space of a hydraulic bushing according to claim 5, wherein: the distance between two adjacent sealing rings (42) is 5-10 mm.
7. A method of sealing a fluid flow space of a hydraulic bushing according to claim 5, wherein: and a sealing column (43) is arranged between two adjacent sealing rings (42) to connect the two sealing rings.
8. A method of sealing a fluid flow space of a hydraulic bushing according to claim 7, wherein: the width of the sealing column (43) is 2-5 mm.
9. A method of sealing a fluid flow space of a hydraulic bushing according to claim 7, wherein: the number of the sealing columns (43) between two adjacent sealing rings (42) is 4-8.
10. A method of sealing a fluid flow space of a hydraulic bushing according to claim 5, wherein: the interference magnitude between the sealing ring (42) and the inner wall of the outer pipe (1) is 0.5-1.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444611.XA CN114810915B (en) | 2022-04-26 | 2022-04-26 | Sealing method for liquid flowing space of hydraulic bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444611.XA CN114810915B (en) | 2022-04-26 | 2022-04-26 | Sealing method for liquid flowing space of hydraulic bushing |
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| Publication Number | Publication Date |
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| CN114810915A true CN114810915A (en) | 2022-07-29 |
| CN114810915B CN114810915B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210444611.XA Active CN114810915B (en) | 2022-04-26 | 2022-04-26 | Sealing method for liquid flowing space of hydraulic bushing |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443287A (en) * | 2000-08-04 | 2003-09-17 | 本田技研工业株式会社 | Elastic bush and method of press-fitting elastic bush |
| US20060006592A1 (en) * | 2004-07-08 | 2006-01-12 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping bushing |
| JP2011017422A (en) * | 2009-07-10 | 2011-01-27 | Bridgestone Corp | Bush type liquid seal vibration control device and method for manufacturing it |
| JP2013108584A (en) * | 2011-11-22 | 2013-06-06 | Kurashiki Kako Co Ltd | Liquid encapsulated vibration isolating device |
| EP2657566A2 (en) * | 2012-04-23 | 2013-10-30 | ZF Friedrichshafen AG | Hydrolayer with a sealing lip manufactured as a separate component |
| CN104565185A (en) * | 2014-12-26 | 2015-04-29 | 宁波拓普集团股份有限公司 | Hydraulic bushing |
| CN112081862A (en) * | 2019-06-12 | 2020-12-15 | 广州汽车集团股份有限公司 | Hydraulic bushing, vehicle front suspension system and vehicle |
| CN212657167U (en) * | 2020-05-18 | 2021-03-05 | 广州汽车集团股份有限公司 | Automobile hydraulic bushing and automobile front suspension |
-
2022
- 2022-04-26 CN CN202210444611.XA patent/CN114810915B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443287A (en) * | 2000-08-04 | 2003-09-17 | 本田技研工业株式会社 | Elastic bush and method of press-fitting elastic bush |
| US20060006592A1 (en) * | 2004-07-08 | 2006-01-12 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping bushing |
| JP2011017422A (en) * | 2009-07-10 | 2011-01-27 | Bridgestone Corp | Bush type liquid seal vibration control device and method for manufacturing it |
| JP2013108584A (en) * | 2011-11-22 | 2013-06-06 | Kurashiki Kako Co Ltd | Liquid encapsulated vibration isolating device |
| EP2657566A2 (en) * | 2012-04-23 | 2013-10-30 | ZF Friedrichshafen AG | Hydrolayer with a sealing lip manufactured as a separate component |
| CN104565185A (en) * | 2014-12-26 | 2015-04-29 | 宁波拓普集团股份有限公司 | Hydraulic bushing |
| CN112081862A (en) * | 2019-06-12 | 2020-12-15 | 广州汽车集团股份有限公司 | Hydraulic bushing, vehicle front suspension system and vehicle |
| CN212657167U (en) * | 2020-05-18 | 2021-03-05 | 广州汽车集团股份有限公司 | Automobile hydraulic bushing and automobile front suspension |
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| CN114810915B (en) | 2023-06-23 |
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