CN114810915B - 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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- CN114810915B CN114810915B CN202210444611.XA CN202210444611A CN114810915B CN 114810915 B CN114810915 B CN 114810915B CN 202210444611 A CN202210444611 A CN 202210444611A CN 114810915 B CN114810915 B CN 114810915B
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- sealing
- rubber
- hydraulic bushing
- outer tube
- rubber body
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The sealing method of the liquid flowing space of the hydraulic bushing comprises the steps of designing the matching of the structure of the runner body and the structure of the rubber body to enable the runner body and the outer tube to be in interference fit, arranging the periphery at the two ends of the rubber body of the rubber main spring to be in interference fit with the sealing ring of the rubber body integrated structure and the outer tube, and attaching the inward flanging at the two ends of the outer tube to the rubber body. According to the utility model, the sealing rings integrally formed with the rubber body are arranged on the outer peripheral sides of the two ends of the rubber body and matched with the inner flanging of the outer tube, so that the leakage of the hydraulic bushing is avoided, and the sealing rings and the rubber body are integrally formed, so that the sealing rings can not shift in the assembly process of the hydraulic bushing, and the overall performance is ensured.
Description
Technical Field
The utility model relates to a sealing method, in particular to a sealing method for a liquid flow 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 the running stability and safety of the automobiles are improved. The rubber main spring structure in the hydraulic bushing mainly meets the requirement of the hydraulic bushing on the static stiffness in all directions, and the structure of the liquid chamber 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 runner and the outer pipe cannot have liquid flow, and the whole hydraulic bushing does not leak liquid. If liquid flow exists at the contact surface between the runner and the outer pipe, the performance of the hydraulic bushing is uncontrollable; if the hydraulic bushing leaks outwards, the product can fail. When the center of the inner pipe and the center of the outer pipe are offset, the volumes of two liquid chambers of the rubber main spring are changed, the liquid passes through the flow passage from one chamber flow passage to the other chamber, energy generated by vibration is attenuated through inertia loss, friction and the like of liquid flow, the attenuated energy generates heat, the generated heat and impact load received by the liquid increase the sealing difficulty of the liquid, and the sealing of the liquid is difficult to realize by a single sealing structure.
For example, in the patent application number CN201921886875.0, the sealing rubber is disposed on the inner side of the outer tube of the hydraulic bushing, so that the rubber main spring is attached to the sealing rubber to avoid leakage of the hydraulic bushing. However, this way does not mention how to arrange the sealing rubber inside the outer tube, the sealing performance between the sealing rubber itself and the outer tube is doubtful, and the sealing way is inconvenient to install, because the internal structure of the hydraulic bushing is press-fitted inside the outer tube, and the stability of the sealing rubber is difficult to ensure in the press-fitting process, so that the fitting degree of the sealing rubber and the rubber main spring is also difficult to ensure, and the sealing effect is limited.
In another example, application number CN201910815521.5, named as "a sealing method and structure of a liquid cavity in a liquid rubber composite node" is that an annular groove is formed at the periphery of a through hole of a cover plate and at the outer side of an arc plate, and a cover plate sealing ring is placed in the groove. The inner side of the outer pipe of the runner is in interference fit with the outer side of the cover plate, so that the inner side of the outer pipe of the runner is pressed on the cover plate sealing ring, 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 pipe of the runner. The two ends of the integral outer tube extend out of the top end of the runner outer tube, the extending part of the integral outer tube 1 is bent towards the top end of the middle spacer to form an outer tube elbow, a folding cavity is formed among the integral outer tube, the runner outer tube and the middle spacer, and an end sealing ring is arranged in the folding cavity. The scheme is that an independent sealing ring is arranged in the composite node, an additional structure is needed to be arranged for placing the independent sealing ring, and additional attention is needed in the installation process so as not to damage the sealing ring.
Disclosure of Invention
Aiming at the problem that the sealing effect of the current hydraulic bushing is difficult to ensure, the utility model provides a sealing method for the liquid flowing space of the hydraulic bushing, which ensures that the liquid in the hydraulic bushing only flows in the flowing space specified by design and the phenomenon of outward leakage cannot occur.
The utility model adopts the technical means for solving the problems that: the sealing method of the liquid flowing space of the hydraulic bushing comprises the steps of designing the matching of the structure of the runner body and the structure of the rubber body to enable the runner body and the outer tube to be in interference fit, arranging the periphery at the two ends of the rubber body of the rubber main spring to be in interference fit with the sealing ring of the rubber body integrated structure and the outer tube, and attaching the inward flanging at the two ends of the outer tube to the rubber body.
Further, the matching of the runner body structure and the rubber body structure means that a protruding structure is arranged at the inner side of the runner body near the notch of the runner body and matched with the side wall of the window of the rubber body, and the protruding structure of the runner body is propped against the side wall of the window.
Further, the interference between the outer wall of the runner body and the inner wall of the outer tube is 0.5-1.0mm.
Further, the width of the seal ring is set to 2-5mm.
Further, two or more seal rings are provided on the outer circumferences of both ends of the rubber body.
Further, the distance between two adjacent sealing rings is 5-10mm.
Further, a sealing column is arranged between two adjacent sealing rings to connect the sealing rings.
Further, the width of the sealing post is 2-5mm.
Further, the number of seal posts between two adjacent seal rings is 4-8.
Further, the interference between the sealing ring and the inner wall of the outer tube is 0.5-1.0mm.
Further, the sealing ring exceeds the thickness of the rubber body by 0.5-1.0mm.
Further, the thickness of the sealing column exceeds the rubber body by 0.5-1.0mm.
Further, the outer tube is turned inwards 20-40 at both ends o 。
The beneficial effects of the utility model are as follows:
1. according to the utility model, the flowing space of the liquid is set to be in a mode of connecting two liquid cavities by adopting the flow channel and the bypass, viscous liquid is prevented from flowing between the contact surface of the flow channel body outside the flow channel and the inner wall of the outer tube by interference between the flow channel body and the inner wall of the outer tube, and the performance of the hydraulic bushing is reliably ensured; meanwhile, the sealing rings integrally formed with the rubber bodies are arranged on the outer peripheral sides of the two ends of the rubber bodies and matched with the inner flanging of the outer tube, so that liquid leakage of the hydraulic bushing is avoided, the sealing rings can not shift in the assembly process of the hydraulic bushing in an integrally formed manner of the sealing rings and the rubber bodies, and the overall performance is guaranteed.
2. According to the utility model, more than two sealing rings are respectively arranged at each end of the rubber body, so that the sealing effect is further ensured; 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 mounting process of the hydraulic bushing.
Drawings
FIG. 1 is a schematic view of the overall structure of a hydraulic bushing according to an embodiment;
FIG. 2 is a schematic view in radial cross-section of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the hydraulic bushing of FIG. 2 taken in an upward axial 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 rubber main spring according to an embodiment;
FIG. 6 is an enlarged schematic view of a portion of FIG. 5;
FIG. 7 is a schematic view of a fluid structure of an embodiment;
in the figure: 1. outer tube, 100, rubber main spring, 2, inner tube, 3, inner cage, 4, rubber body, 41, window side wall, 42, sealing ring, 43, sealing post, 44, locating post, 5, runner body, 51, runner, 52, notch, 53, communication hole, 54, raised structure, 55, locating hole, 6, rubber stopper, 7, viscous liquid, 8, bypass, 9, liquid cavity.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, the hydraulic node of the present embodiment includes an outer tube 1 and a rubber main spring 100 press-fitted inside the outer tube 1 from the outside. As shown in fig. 2 and 3, the rubber main spring 100 includes an inner tube 2 and an inner cage 3 integrally vulcanization-connected by a rubber body 4, and a runner 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 window is located in a direction of the hydraulic bushing in a direction perpendicular to the air direction in a real direction of the hydraulic bushing. As shown in fig. 2 and 3, the rubber stopper 6 is provided in the hollow direction of the hydraulic bushing, and the window in the hollow direction becomes the liquid cavity 9 of the viscous liquid 7. As shown in fig. 7, the runner body 5 has an annular structure with a notch 52, a runner 51 is provided on the outer side wall of the runner body 5, the notch 52 of the runner body 5 is located at the position of the hydraulic bushing after the runner body 5 is mounted on the rubber spring 100, and a communication hole 53 is further provided on the runner 51 to communicate the runner 51 with the liquid cavity 9. As shown in fig. 4, a bypass 8 through which the viscous liquid 7 passes is provided at the outer side wall of the rubber body 4 located at the notch 52 of the runner body 5.
In this embodiment, the flow space of the viscous liquid 7 comprises the bypass 8-liquid cavity 9-the flow channel 51-the liquid cavity 9, forming an overall annular flow structure. In order to ensure the performance of the entire hydraulic bushing, it is ensured that the viscous liquid 7 flowing in the flow passage 51 does not overflow to the position where the flow passage body 5 is attached to the outer tube 1, and that the viscous liquid 7 in the entire hydraulic bushing flow space does not leak to the outside.
As shown in fig. 7, the inner wall of the runner body 5 near the notch 52 is provided with a protruding structure 54, when the runner body 5 is mounted on the rubber main spring 100, the protruding structure 54 props against the window side wall 41 of the rubber body 4, the rubber body 4 provides a pushing force for the runner body 5 through the window side wall 41, so that the runner body 5 expands outwards, an interference fit is formed between the outer side wall of the runner body 5 and the inner side wall of the outer tube 1, the interference is 0.5-1.0mm, an interaction force is established between the outer side of the runner body 5 and the inner side of the outer tube 1, the adhesion between the runner body 5 and the outer tube 1 is firm, viscous liquid 7 flowing in the runner 51 is ensured not to overflow in the working process of the hydraulic bushing, and the stability of the performance of the whole hydraulic bushing is ensured. Meanwhile, the runner body 5 is provided with a positioning hole 55 at a position avoiding the runner 51, 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, the positioning column 44 passes through the positioning hole 55, 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, pushing between the protruding structure 54 and the window side wall 41 is matched, the relative position between the runner body 5 and the outer tube 1 in the press mounting process is correct, and interference fit between the runner body 5 and the outer tube 1 after the press mounting is ensured.
As shown in fig. 5, the outer circumferences of the rubber bodies 4 at the two ends of the rubber main spring 100 are provided with annular sealing rings 42, so that the sealing rings 42 are in interference fit with the outer tube 1, and the interference is 0.5-1.0mm, preferably more than two, in this embodiment, two, but of course, a proper number can be selected according to the size and performance requirements of the hydraulic bushing. The width of each seal ring 42 is selected to be 2-5mm to ensure strength and installation, and if the width of the individual seal rings 42 is too small, the seal rings 42 are easily damaged during the demolding of the rubber main spring 100 from the vulcanization mold and during the assembling of the rubber main spring 100 with the outer tube 1; if the width of the single seal ring 42 is too large, the assembly between the rubber main spring 100 and the outer tube 1 is made difficult again. 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 tube, smooth press fitting is ensured, and excessive stacking of rubber is avoided. As shown in FIG. 6, the thickness H of the seal ring 42 beyond the rubber body 4 is set to 0.5-1.0mm. Meanwhile, a sealing post 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 easy to damage 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 excessive, the assembling process between the rubber main spring 100 and the outer tube 1 may become difficult, and the design of the vulcanization mold side-draw may be limited. Likewise, the width of the sealing post 43 is also selected to be 2-5mm to ensure strength and installation, and the thickness H of the sealing post 43 beyond the rubber body 4 is also set to be 0.5-1.0mm.
In addition, after the rubber main spring 100 is pressed and assembled to the outer tube 1, the two ends of the outer tube 1 are turned inwards, the turning angle is 20-40 degrees, the matching of the rubber body 4 and the outer tube 1 is further enhanced, the outward leakage of the hydraulic bushing is thoroughly avoided, meanwhile, the upper end and the lower end of the outer tube 1 are turned inwards, the axial pressing and disengaging force of the outer tube 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 only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, so that all equivalent technical solutions shall fall within the scope of the present utility model, which is defined by the claims.
Claims (8)
1. A method of sealing a fluid flow space of a hydraulic bushing, comprising: the liquid flowing space comprises liquid cavities (9) arranged at two sides of a rubber main spring (100), a flow channel (51) arranged on the outer side wall of an annular flow channel body (5) with a notch (52), and a bypass (8) arranged at the outer side of a rubber body (4) far away from the flow channel body (5), and the sealing method of the flowing space comprises the steps of designing structural matching of the flow channel body (5) and the rubber body (4) to enable the flow channel body (5) to be in interference fit with an outer tube (1), arranging interference fit between sealing rings (42) which are integrated with the rubber body (4) and are arranged at the periphery of two ends of the rubber body (4) of the rubber main spring (100), and attaching inward flanging at two ends of the outer tube (1) to the rubber body (4);
the structural matching of the runner body (5) and the rubber body (4) means that a convex structure (54) is arranged at the inner side of the runner body (5) close to the notch (52) of the runner body and matched with the window side wall (41) of the rubber body (4), and the window side wall (41) is propped against the convex structure (54) of the runner body (5);
the interference between the outer wall of the runner body (5) and the inner wall of the outer tube (1) is 0.5-1.0mm.
2. A method of sealing a hydraulic bushing fluid flow space according to claim 1, wherein: the width of the seal ring (42) is set to 2-5mm.
3. A method of sealing a hydraulic bushing fluid flow space 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).
4. A method of sealing a hydraulic bushing fluid flow space as claimed in claim 3, wherein: the distance between two adjacent sealing rings (42) is 5-10mm.
5. A method of sealing a hydraulic bushing fluid flow space as claimed in claim 3, wherein: a sealing column (43) is arranged between two adjacent sealing rings (42) to connect the two adjacent sealing rings.
6. A method of sealing a hydraulic bushing fluid flow space according to claim 5, wherein: the width of the sealing post (43) is 2-5mm.
7. A method of sealing a hydraulic bushing fluid flow space according to claim 5, wherein: the number of sealing columns (43) between two adjacent sealing rings (42) is 4-8.
8. A method of sealing a hydraulic bushing fluid flow space according to claim 2, wherein: the interference between the sealing ring (42) and the inner wall of the outer tube (1) is 0.5-1.0mm.
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 CN114810915A (en) | 2022-07-29 |
| CN114810915B true CN114810915B (en) | 2023-06-23 |
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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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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1306573B1 (en) * | 2000-08-04 | 2007-12-19 | Honda Giken Kogyo Kabushiki Kaisha | Resilient bush and method of pressure-insertion of a resilient bush |
| JP2006022907A (en) * | 2004-07-08 | 2006-01-26 | Tokai Rubber Ind Ltd | Liquid-sealed vibration-isolation bush |
| 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 |
| DE102012206621A1 (en) * | 2012-04-23 | 2013-10-24 | Zf Friedrichshafen Ag | Hydraulic bearing with a sealing lip produced as a separate component |
| CN104565185B (en) * | 2014-12-26 | 2017-01-18 | 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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