Hydraulic bushing and vehicle
By setting limiting parts and stripe structures in the hydraulic bushing, the movement of the flow channel plate is restricted, friction noise is reduced, the noise problem of the hydraulic bushing during impact is solved, and the wear resistance and overall vehicle performance are improved.
Patent Information
- Application Number
- CN202422848819.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Hydraulic bushings are prone to abnormal noise when subjected to large impacts, which is mainly caused by the friction between the flow channel plate and the rubber body.
A hydraulic bushing is designed to restrict the movement of the flow channel plate by setting a first limiting part and a second limiting part on the rubber body, and to set stripes on the first limiting part to reduce the contact area between the flow channel plate and the rubber body, thereby forming a braking chamber and an acceleration chamber to achieve pressure relief and vibration reduction.
It effectively reduces the friction noise between the runner plate and the rubber body, improves the wear resistance and service life of the hydraulic bushing, and improves the comfort and handling of the entire vehicle.
Smart Images
Figure CN223456766U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicles, in particular to a hydraulic bushing and a vehicle. BACKGROUND
[0002] With the improvement of the performance requirements of the whole vehicle, the hydraulic bushing is applied more and more widely. The hydraulic bushing is often applied to the front suspension of the vehicle. The hydraulic bushing is installed at the end of the lower control arm. The wheel and the front suspension of the vehicle body are elastically connected together through the hydraulic bushing and the ball hinge.
[0003] The hydraulic bushing comprises an inner core, a rubber body and two flow channel plates. The rubber body is sleeved on the inner core. Two flow channel plates are respectively formed with two communicating chambers with the rubber body. The chambers are filled with liquid. In the use process, the vibration is transmitted to the inner core to compress one side of the chamber. Due to the flow of the internal liquid, a larger damping can be brought to effectively absorb the vibration and provide superior comfort and handling for the whole vehicle.
[0004] However, when the hydraulic bushing bears a larger impact in the use process, the flow channel plate will abut against the rubber body and generate friction, thereby causing the hydraulic bushing to easily produce abnormal noise. CONTENT OF THE UTILITY MODEL
[0005] The present application provides a hydraulic bushing and a vehicle to solve the problem that the hydraulic bushing easily produces abnormal noise when bearing a larger impact.
[0006] In one aspect, the present application provides a hydraulic bushing, comprising: an inner core, a rubber body, an inner framework, an outer tube and two flow channel plates.
[0007] The rubber body comprises a rubber main body, a first limiting part, a second limiting part and two skin bowls. The rubber main body is sleeved on the inner core. Two skin bowls are symmetrically arranged at two ends of the rubber main body. The inner framework is connected with the two skin bowls respectively. The outer tube is sleeved on the two skin bowls. The flow channel plate is arranged between the outer tube and the rubber main body. The flow channel plate and the rubber main body form a brake chamber and an acceleration chamber which are in communication with each other.
[0008] The first limiting part and the second limiting part are arranged on the rubber main body and located in the brake chamber and the acceleration chamber at the same time. The first limiting part is provided with a stripe on the side facing the flow channel plate. The second limiting part and the stripe are used to abut against the flow channel plate to limit the position of the flow channel plate.
[0009] In some embodiments, a limiting protrusion is arranged on the inner core. The second limiting part is wrapped on the limiting protrusion.
[0010] In some embodiments, the distance between the first limiting part and the flow channel plate is less than the distance between the second limiting part and the flow channel plate.
[0011] In some embodiments, the hardness of the first limiting part and the second limiting part is greater than the hardness of the rubber body.
[0012] In some embodiments, the height of the stripe is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.
[0013] In some embodiments, the thickness of the skin cup is greater than or equal to 5 mm and less than 10 mm.
[0014] In some embodiments, one end of the inner core is provided with an anti-skew slope outside the rubber body for distinguishing the two ends of the inner core.
[0015] In some embodiments, one end of the inner core close to the anti-skew slope is provided with a circular mounting hole, and the other end of the inner core away from the anti-skew slope is provided with a waist-shaped mounting hole.
[0016] In some embodiments, the inner skeleton includes two support side plates and two sealing support rings arranged at the two ends of the support side plates and connected to the corresponding skin cups, and two placement grooves for placing the flow channel plates are formed between the two support side plates.
[0017] In another aspect, the application provides a vehicle including a vehicle body and a hydraulic bushing arranged on the vehicle body.
[0018] The hydraulic bushing and the vehicle provided by the application form a brake chamber and an acceleration chamber in communication between the two flow channel plates and the rubber body, respectively, and the internal liquid flows by compressing the brake chamber or the acceleration chamber, so as to achieve the purpose of pressure relief and vibration reduction. The movement position of the flow channel plate is limited by the first limiting part and the second limiting part, so as to reduce the abnormal sound generated by the impact between the flow channel plate and the bushing. At the same time, the stripe on the first limiting part reduces the contact area between the flow channel plate and the rubber body, so that the stress is not easy to accumulate, and the frictional abnormal sound between the flow channel plate and the rubber body is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the description.
[0020] Figure 1 The mounting structure of the front suspension lower control arm provided by the embodiments of the application is shown in the schematic view.
[0021] Figure 2 TheFigure 1 Structure diagram of a middle front suspension lower control arm;
[0022] Figure 3 Structure explosion diagram of a hydraulic bushing provided for an embodiment of the present application;
[0023] Figure 4 For Figure 3 Sectional view of the hydraulic bushing;
[0024] Figure 5 For Figure 3 Structure diagram of a rubber body;
[0025] Figure 6 For Figure 5 Structure sectional view of a first limiting part;
[0026] Figure 7 For Figure 3 Structure diagram of an inner core;
[0027] Figure 8 For Figure 3 Structure diagram of an inner skeleton.
[0028] Explanation of reference numerals:
[0029] 1. A front suspension lower control arm;
[0030] 100. Inner core; 110. Limiting protrusion; 120. Anti-skew surface; 130. Circular mounting hole; 140. Waist-shaped mounting hole; 200. Rubber body; 210. Rubber main body; 211. Partition beam; 212. Pressure relief valve; 220. First limiting part; 221. Stripes; 230. Second limiting part; 240. Skin bowl; 300. Inner skeleton; 310. Support side plate; 320. Sealing support ring; 400. Outer tube; 500. Flow channel plate; 510. Brake side flow channel plate; 520. Acceleration side flow channel plate; 530. Flow channel groove; 600. Liquid.
[0031] Through the above-mentioned drawings, the specific embodiments of the present application have been shown, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0032] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description herein refers to the accompanying drawings, which show by way of example specific exemplary embodiments. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application. Rather, it is merely an example of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.
[0033] It should be noted that the terms "first", "second" and the like in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the descriptive terms "first", "second", etc. are to be interpreted, by those skilled in the art, as a structural or functional relation between rather than a specific chronological or relative order. It is also to be understood that the terms so used include duplicate distinction for elements performing comparable or similar functions in order to provide a clear and consistent description of the disclosed technology. Furthermore, terms such as "include", "have", "exist", "provide", "offer" and the like are used merely to denote inclusion, rather than to exclude, other unrelated entities.
[0034] In the present application, unless specifically stated and limited otherwise, the terms "mount", "connect", "fixed", "connected", "fixedly connected" and the like, are used broadly and encompass both direct and indirect mounting, connecting, fixedly connecting, and the like, and can be fixed or movable, mechanical or electrical connections, and the like, unless otherwise specifically stated and limited.
[0035] In the present application, unless specifically stated and limited otherwise, the terms "on", "under", "above", and "below" are used broadly and encompass both direct and indirect contacts, with or without intervening media, unless otherwise specifically stated and limited.
[0036] With the improvement of the performance requirements of the whole vehicle, the hydraulic bushing is more and more widely used. The hydraulic bushing is often used on the front suspension of the vehicle. The hydraulic bushing is installed at the end of the lower control arm of the front suspension, and the wheel and the front suspension of the vehicle body are elastically connected together through the hydraulic bushing and the ball hinge.
[0037] The hydraulic bushing comprises an inner core, a rubber body and two flow channel plates, the rubber body is sleeved on the inner core, two chambers in communication are formed between the rubber body and the two flow channel plates respectively, and the chambers are filled with liquid, i.e. hydraulic oil. During use, the vibration of the wheel is transmitted to the inner core, the inner core compresses the chamber on one side, and the flow of the internal liquid is pushed, through the flow of the liquid, a larger damping can be brought, the vibration is effectively absorbed, and superior comfort and handling of the vehicle are provided.
[0038] However, when the hydraulic bushing bears a large impact during use, the flow channel plate abuts against the rubber body and friction is generated, when the friction between the flow channel plate and the rubber body is severe, stress concentration is caused, and abnormal noise is generated.
[0039] To solve the above problems, the application provides a hydraulic bushing and a vehicle, the hydraulic bushing forms a brake chamber and an acceleration chamber in communication between the rubber body and the two flow channel plates respectively through the two flow channel plates, by compressing the brake chamber or the acceleration chamber, the internal liquid is caused to flow, and the purpose of pressure relief and vibration reduction is achieved; wherein the movement position of the flow channel plate is limited by the first limiting part and the second limiting part to reduce the abnormal noise caused by the impact of the flow channel plate and the bushing inside, at the same time, the stripe on the first limiting part reduces the contact area of the flow channel plate and the rubber body, so that stress is not easily accumulated, and the friction abnormal noise of the flow channel plate and the rubber body is reduced.
[0040] The technical solutions of the application and how the technical solutions of the application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the application will be described below with reference to the drawings.
[0041] In one aspect, the application provides a hydraulic bushing, referring to Figures 1 to 8 , the hydraulic bushing comprises an inner core 100, a rubber body 200, an inner skeleton 300, an outer tube 400 and two flow channel plates 500;
[0042] The rubber body 200 comprises a rubber main body 210, a first limiting part 220, a second limiting part 230 and two skin bowls 240, the rubber main body 210 is sleeved on the inner core 100, the two skin bowls 240 are symmetrically arranged at two ends of the rubber main body 210, the inner skeleton 300 is connected with the two skin bowls 240 respectively, the outer tube 400 is sleeved on the two skin bowls 240, the flow channel plate 500 is arranged between the outer tube 400 and the rubber main body 210, and the brake chamber and the acceleration chamber in communication with each other are formed between the flow channel plate 500 and the rubber main body 210;
[0043] The first limiting part 220 and the second limiting part 230 are both arranged on the rubber main body 210 and located in the brake chamber and the acceleration chamber at the same time, and the first limiting part 220 is provided with a stripe 221 on the side facing the flow channel plate 500, and the first limiting part 220 and the stripe 221 are both used for abutting against the flow channel plate 500 to limit the position of the flow channel plate 500.
[0044] In the embodiments of the present application, referring to Figure 1 and Figure 2 , the hydraulic bushing is taken as an example of being installed on the front suspension lower control arm 1 of a vehicle. In other embodiments, it can be applied to other positions, which will not be described in detail here.
[0045] In the embodiments of the present application, referring to Figure 3 and Figure 7 , the inner core 100 is three-sectioned, and the diameter of the middle part is greater than that of the two ends. The rubber main body 210 is sleeved on the middle part of the inner core 100. The inner skeleton 300 is connected with the two end skin bowls 240 to support the rubber body 200. The outer tube 400 is sleeved on the rubber body 200, and the outer tube 400, the inner core 100, the rubber body 200 and the inner skeleton 300 are coaxially arranged. The side of the skin bowl 240 away from the rubber main body 210 is provided with a mounting part, and the outer tube 400 is sleeved on the mounting part to cover the entire rubber body 200, and a sealing ring is arranged between the outer tube 400 and the mounting part, and the inner skeleton 300 is also located in the mounting part and cooperates with the inner skeleton 300 to realize the sealing between the outer tube 400 and the rubber body 200.
[0046] In the embodiments of the present application, referring to Figure 4 and Figure 5 , the rubber body 200 is symmetrically provided with two protruding partition beams 211, which are arranged along the axis direction of the inner core 100, and abut against the outer tube 400 to form two sealed chambers between the outer tube 400 and the rubber body 200, i.e. the brake chamber and the acceleration chamber. Two flow channel plates 500 are respectively placed in the two chambers. Moreover, the two chambers are filled with liquid 600. Exemplarily, the filled liquid 600 can be hydraulic oil.
[0047] In the embodiments of the present application, referring to Figure 3 and Figure 4 , the two flow channel plates 500 are divided into a brake side flow channel plate 510 and an acceleration side flow channel plate 520. The brake side flow channel plate 510 is located in the brake chamber, and the acceleration side flow channel plate 520 is located in the acceleration chamber. The side of the two flow channel plates 500 close to the outer tube 400 is provided with a flow channel groove 530 to realize the flow of the liquid 600 between the two chambers.
[0048] Further, referring to Figure 5A plurality of pressure relief valves 212 are arranged on the two partition beams 211, and the pressure relief valves 212 are used to communicate the chambers on both sides, so that the pressure can be relieved in time when the pressure is too large.
[0049] The thickness of the brake-side flow channel plate 510 is greater than the thickness of the acceleration-side flow channel plate 520, so that the distance between the brake-side flow channel plate 510 and the first limiting portion 220 is less than the distance between the acceleration-side flow channel plate 520 and the first limiting portion 220, and the volume of the brake chamber is less than the volume of the acceleration chamber.
[0050] The first limiting portion 220 is in a ring structure and is coaxial with the inner core 100. The partition beam 211 divides the first limiting portion 220 into two symmetrical parts, which are respectively located in the brake chamber and the acceleration chamber.
[0051] The second limiting portion 230 is also in a ring structure and is coaxial with the inner core 100. The partition beam 211 divides the second limiting portion 230 into two symmetrical parts, which are respectively located in the brake chamber and the acceleration chamber. In the embodiment, two second limiting portions 230 are arranged on both sides of the first limiting portion 220.
[0052] The outer tube 400 is made of aluminum and is sealed with the rubber body 200 at both ends through the spin riveting process, so as to ensure the sealing performance of the hydraulic bushing.
[0053] In some embodiments, with reference to Figure 7 The inner core 100 is provided with a limiting protrusion 110, and the second limiting portion 230 is wrapped on the limiting protrusion 110.
[0054] Two annular limiting protrusions 110 are arranged on the middle part of the inner core 100, and the second limiting portion 230 is wrapped on the limiting protrusions 110. On the one hand, the limiting protrusions 110 can position the rubber body 200; on the other hand, the thickness of the second limiting portion 230 can be reduced.
[0055] In some embodiments, the distance between the first limiting portion 220 and the flow channel plate 500 is less than the distance between the second limiting portion and the flow channel plate 500.
[0056] The distance between the first limiting portion 220 and the flow channel plate 500 is less than the distance between the second limiting portion 230 and the flow channel plate 500. In the use process, the first limiting portion 220 first contacts the flow channel plate 500 to limit the position of the flow channel plate 500. Only when the first limiting portion 220 is compressed more, the second limiting portion 230 will be contacted, so that when the hydraulic bushing bears a small pressure, the flow channel plate 500 only contacts the first limiting portion 220, and the contact area of the flow channel plate 500 is reduced, so as to reduce the abnormal sound generated by the friction between the flow channel plate 500 and the rubber body 200.
[0057] In some embodiments, the hardness of the rubber of the first limiting portion 220 and the second limiting portion 230 is greater than the hardness of the rubber of the rubber body 210.
[0058] The hardness of the rubber of the first limiting portion 220 and the second limiting portion 230 is greater than the hardness of the rubber of the rubber body 210, and the hardness of the rubber of the second limiting portion 230 is greater than the hardness of the rubber of the skin bowl 240. The first limiting portion 220 and the second limiting portion 230 are both made of high-hardness rubber, which can improve wear resistance and prolong the service life of the hydraulic bushing. Meanwhile, the rubber body 210 and the skin bowl 240 are both made of low-hardness rubber, which can improve the comfort performance of the vehicle. The rubber body 200 is formed into a vulcanized body by a vulcanization process.
[0059] In some embodiments, referring to Figure 4 and Figure 6 , the height of the stripe 221 is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.
[0060] As shown in Figure 6 , the height of the stripe 221 is L, and 0.3 mm≤L≤0.7 mm. Preferably, the height L of the stripe 221 is 0.5 mm.
[0061] The height of the stripe 221 is 0.5 mm, which can reduce the contact area of the first limiting portion 220 and the flow channel plate 500, and the stress is not easy to accumulate, thereby reducing the abnormal noise caused by friction. The thickness of the rubber of the first limiting portion 220 is greater than or equal to 1.0 mm, which can improve the durability and reduce the abnormal noise caused by internal impact of the bushing.
[0062] In some embodiments, the thickness of the skin bowl 240 is greater than or equal to 5 mm and less than 10 mm.
[0063] The thickness of the skin bowl 240 is relatively thick, which can improve the bearing tensile stress intensity, improve the durability, and improve the problem of cracking and liquid leakage.
[0064] In some embodiments, one end of the inner core 100 is provided with an anti-skew slope 120, and the anti-skew slope 120 is located outside the rubber body 200, so as to distinguish the two ends of the inner core 100.
[0065] The anti-skew slope 120 is provided, which is helpful to distinguish the end of the inner core 100 through the anti-skew slope 120, so as to distinguish the assembly positions of the acceleration flow channel plate 500 and the brake side flow channel plate 510, and distinguish the pressing direction of the hydraulic bushing and the control arm through the anti-skew slope 120.
[0066] In some embodiments, one end of the inner core 100 close to the anti-skew slope 120 is provided with a circular mounting hole 130, and the other end of the inner core 100 away from the anti-skew slope 120 is provided with a waist-shaped mounting hole 140.
[0067] Firstly, the hydraulic bushing is positioned and fixed through the circular mounting hole 130, and then the other end is fixed through the waist-shaped mounting hole 140. The waist-shaped hole is arranged so that the hydraulic bushing can have a certain adjustment range during installation, thereby facilitating the installation of the hydraulic bushing.
[0068] In some embodiments, with reference to Figure 4 and Figure 8 The inner skeleton 300 includes two support side plates 310 and two sealing support rings 320 which are integrally formed. The sealing support rings 320 are arranged at both ends of the support side plates 310 and are connected to the corresponding rubber cups 240. The two support side plates 310 form two placement grooves for placing the flow channel plates 500.
[0069] The two support side plates 310 are arc-shaped plates with the inner core 100 as the axis, and the two support side plates 310 are symmetrically arranged. The two support side plates 310 form a placement groove for placing the flow channel plate 500. The sealing support ring 320 is connected to the end of the rubber cup 240 and cooperates with the outer pipe 400 to seal the outer pipe 400 and the rubber body 200, thereby forming a sealed chamber.
[0070] The inner skeleton 300 is made of aluminum casting process. The thickness of the support side plate 310 is greater than or equal to 2.5 mm, which can improve the radial stiffness of the bushing and improve the handling performance of the vehicle. The sealing support ring 320 can provide support force for the sealing of the hydraulic bushing, thereby ensuring good sealing performance of the hydraulic bushing.
[0071] On the other hand, the application provides a vehicle, comprising a vehicle body and a hydraulic bushing arranged on the vehicle body.
[0072] The hydraulic bushing is installed on the front suspension lower control arm 1 of the vehicle. The hydraulic bushing in the embodiment has the same structure as the hydraulic bushing provided in any one of the above embodiments and can bring the same or similar technical effects. Therefore, the detailed description is not repeated here, and the description of the above embodiments can be referred to.
[0073] The vehicle provided by the application, the hydraulic bushing on the front suspension lower control arm 1 of the vehicle forms brake chamber and acceleration chamber respectively through two flow channel plates 500 and the rubber body 200, and the brake chamber and the acceleration chamber are communicated through the flow channel groove 530, and the internal liquid 600 is made to flow by compressing the brake chamber or the acceleration chamber, so as to achieve the purpose of pressure relief and damping; wherein the movement position of the flow channel plate 500 is limited by the first limiting part 220 and the second limiting part 230, so as to reduce the abnormal sound generated by the impact between the flow channel plate 500 and the inside of the bushing, and at the same time, the stripe 221 on the first limiting part 220 reduces the contact area between the flow channel plate 500 and the rubber body 200, so that the stress is not easy to accumulate, and the friction abnormal sound between the flow channel plate 500 and the rubber body 200 is reduced.
[0074] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.
[0075] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.
Claims
1. A hydraulic bushing characterized by, The hydraulic bushing comprises an inner core (100), a rubber body (200), an inner skeleton (300), an outer tube (400) and two flow channel plates (500). The rubber body (200) comprises a rubber main body (210), a first limiting part (220), a second limiting part (230) and two leather cups (240), the rubber main body (210) is sleeved on the inner core (100), the two leather cups (240) are symmetrically arranged at two ends of the rubber main body (210), the inner skeleton (300) is connected with the two leather cups (240) respectively, the outer tube (400) is sleeved on the two leather cups (240), the flow channel plate (500) is arranged between the outer tube (400) and the rubber main body (210), and the flow channel plate (500) and the rubber main body (210) form a brake chamber and an acceleration chamber which are in communication with each other. The first limiting part (220) and the second limiting part (230) are arranged on the rubber main body (210) and located in the brake chamber and the acceleration chamber at the same time, the first limiting part (220) is provided with a stripe (221) on the side facing the flow channel plate (500), and the second limiting part (230) and the stripe (221) are used for abutting against the flow channel plate (500) to limit the position of the flow channel plate (500). The inner core (100) is provided with a limiting protrusion (110), and the second limiting part (230) is wrapped on the limiting protrusion (110).
2. The hydraulic bushing of claim 1, wherein, The distance between the first limiting part (220) and the flow channel plate (500) is smaller than the distance between the second limiting part (230) and the flow channel plate (500).
3. The hydraulic bushing of claim 1, wherein, The hardness of the rubber of the first limiting part (220) and the second limiting part (230) is greater than the hardness of the rubber of the rubber main body (210).
4. The hydraulic bushing of claim 1, wherein, The height of the stripe (221) is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.
5. The hydraulic bushing of claim 1, wherein, The thickness of the leather cup (240) is greater than or equal to 5 mm and less than 10 mm.
6. The hydraulic bushing of claim 1, wherein, One end of the inner core (100) is provided with an anti-misalignment inclined surface (120), and the anti-misalignment inclined surface (120) is located outside the rubber body (200) and used for distinguishing the two ends of the inner core (100).
7. The hydraulic bushing of any of claims 1-6, wherein, The end of the inner core (100) close to the anti-misalignment inclined surface (120) is provided with a circular mounting hole (130), and the end of the inner core (100) away from the anti-misalignment inclined surface (120) is provided with a waist-shaped mounting hole (140).
8. The hydraulic bushing of claim 7, wherein, The inner skeleton (300) comprises two support side plates (310) and two sealing support rings (320), the sealing support rings (320) are arranged at two ends of the support side plates (310), the sealing support rings (320) are connected on the corresponding leather cups (240) respectively, and two placing grooves for placing the flow channel plates (500) are formed between the two support side plates (310).
9. The hydraulic bushing of any of claims 1-6, wherein, The hydraulic bushing is arranged on a vehicle body.
10. A vehicle characterized by comprising: