Hydraulic bushing and vehicle

Abstract

This application relates to the field of vehicle chassis technology and provides a hydraulic bushing and a vehicle. The hydraulic bushing of this application includes a bushing body arranged laterally along its axis and a hydraulic assembly located at the bottom of the bushing body. The bushing body includes an outer tube and an inner core connected to the outer tube via a rubber body, and the bottom of the outer tube has an opening. The hydraulic assembly includes a flow channel plate and a piston cup disposed in the opening, and an upper liquid chamber is formed between the flow channel plate and the rubber body, and a lower liquid chamber is formed between the flow channel plate and the piston cup. The upper and lower liquid chambers are connected through a damping flow channel within the flow channel plate. This application can improve the bushing's ability to dampen large-amplitude vibrations, improve the bushing's durability, and thus contribute to improving the quality of hydraulic bushing use.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and in particular to a hydraulic bushing. This application also relates to a vehicle equipped with the hydraulic bushing. Background Technology

[0002] A bushing is an installation element with vibration damping and buffering function. Taking the hydraulic bushing, which is widely used in vehicles, as an example, it is generally used to support the engine or transmission in the vehicle. It generates damping by the flow of damping fluid through the flow channel, suppressing vibrations caused by road bumps and other factors to achieve the vibration damping and buffering effect.

[0003] However, existing hydraulic bushings still have limited effectiveness in damping large-amplitude vibrations in the vertical direction of the vehicle, and the hydraulic components are easily damaged by vibration and impact, resulting in low bushing durability, which is not conducive to improving the quality of hydraulic bushings. Summary of the Invention

[0004] In view of this, the present application aims to provide a hydraulic bushing to improve the performance of hydraulic bushings.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] A hydraulic bushing includes a bushing body arranged laterally along an axis, and a hydraulic assembly located at the bottom of the bushing body;

[0007] The bushing body includes an outer tube and an inner core connected to the outer tube by a rubber body, and the bottom of the outer tube is provided with an opening;

[0008] The hydraulic assembly includes a flow channel plate and a piston cup disposed in the opening, and an upper liquid chamber is formed between the flow channel plate and the rubber body, and a lower liquid chamber is formed between the flow channel plate and the piston cup. The upper liquid chamber and the lower liquid chamber are connected through a damping flow channel in the flow channel plate.

[0009] Furthermore, the bottom of the inner core is connected to the outer tube via a connecting portion in the rubber body;

[0010] The top of the inner core and its two opposite sides are separated from the outer tube by gaps, and the outer wall of the inner core and / or the inner wall of the outer tube are covered with the rubber body.

[0011] Furthermore, the two opposite sides of the bottom of the inner core are respectively formed with wedge surfaces, and a first limiting protrusion is provided on both sides of the wedge surfaces;

[0012] The first limiting protrusions on both sides are two that are spaced apart along the axial direction of the bushing body, and the outer tube is provided with second limiting protrusions that are respectively arranged corresponding to the wedge surfaces on each side;

[0013] From the radial direction of the bushing body, the second limiting protrusion on each side is located between the two first limiting protrusions on the same side, and both the first limiting protrusion and the second limiting protrusion are covered in the connecting portion.

[0014] Furthermore, each side of the wedge surface is provided with a groove located between the two first limiting protrusions, and the connecting portion is provided between the two first limiting protrusions and within the groove.

[0015] Furthermore, the outer tube is provided with a third limiting protrusion arranged on two opposite sides of the inner core, and the third limiting protrusion is covered with the rubber body.

[0016] Furthermore, the flow channel plate and the cup are fixed in the opening by a pressure plate;

[0017] The pressure plate is engaged with the outer tube by interlocking protrusions and mounting grooves, and the pressure plate presses together the cup, the flow channel plate and the rubber body covering the opening.

[0018] Furthermore, the flow channel plate includes an upper flow channel plate and a lower flow channel plate that are fastened together;

[0019] The damping channel is formed between the upper flow channel plate and the lower flow channel plate. The upper flow channel plate and the lower flow channel plate are snapped together, and a number of interlocking stepped structures are provided between the end faces of the upper flow channel plate and the lower flow channel plate.

[0020] Furthermore, the rubber body is provided with sheet-like protrusions located in the upper liquid chamber;

[0021] The sheet-like protrusions are arranged in pairs opposite to each other, with one end of each sheet-like protrusion connected to the rubber body and the other end extending into the upper liquid chamber.

[0022] Furthermore, the outer tube is made of nylon, and / or the inner core is made of cast aluminum.

[0023] Compared with related technologies, this application has the following advantages:

[0024] (1) The hydraulic bushing described in this application is arranged laterally on the axis of the bushing body, and the outer tube and inner core in the bushing body are connected by a rubber body. Based on the vibration damping and buffering of the rubber body, the hydraulic component is set at the bottom of the bushing body, and the flow channel plate in the hydraulic component forms an upper liquid chamber between the flow channel plate and the rubber body, and a lower liquid chamber forms between the flow channel plate and the rubber cup. At the same time, the flow channel plate is provided with a damping flow channel connecting the upper and lower liquid chambers. In this way, the hydraulic component can be arranged at the bottom of the bushing body and the liquid chamber is arranged along the vertical direction of the bushing to more directly deal with large amplitude vibrations in the vertical direction, improve the bushing's ability to attenuate large amplitude vibrations, and also reduce the probability of damage to the hydraulic part due to vibration and impact, thereby improving the durability of the bushing and thus improving the quality of use of the hydraulic bushing.

[0025] (2) The bottom of the inner core is connected to the outer tube through the connecting part in the rubber body, so that the top of the inner core and the two opposite sides are separated from the outer tube. At the same time, the outer wall of the inner core and the inner wall of the outer tube are covered with rubber body. On the one hand, the large size of the connecting part in the rubber body can be used to form an upper liquid chamber with the flow channel plate in the hydraulic component, and to ensure the stability of the upper liquid chamber structure, effectively reducing the probability of damage caused by vibration and impact. On the other hand, the gap between the inner core and the outer tube and the covering of the rubber body can be used to ensure the vibration damping and buffering effect of the rubber body between the outer tube and the inner core, and to meet the vibration damping and buffering requirements of the bushing in other directions.

[0026] (3) Two opposite wedge surfaces are formed on the bottom of the inner core. A first limiting protrusion is provided on each side wedge surface, and a second limiting protrusion is provided on the outer tube accordingly. The second limiting protrusion on each side is located between the two first limiting protrusions on the same side. At the same time, each limiting protrusion is also covered in the connecting part. The first limiting protrusion and the second limiting protrusion are arranged in a relative manner, and the distribution of the second limiting protrusion and the two first limiting protrusions in the bushing axial direction can shorten the distance between the main skeleton in the bushing body, improve the axial stiffness of the bushing, suppress the axial impact under large load, and improve the reliability of the product. At the same time, it can also increase the connection strength between the outer tube and the inner core, prevent the inner core from deflecting under large load, avoid collision noise, and help to further improve the quality of the bushing.

[0027] (4) A groove is provided on the wedge surface between the two first limiting protrusions, and the two first limiting protrusions and the groove are connected to the rubber body. This not only helps the rubber material to flow and fill during the vulcanization process of the rubber body, ensuring that the rubber at the root of the first limiting protrusion is fully filled, reducing defects such as missing rubber and air bubbles, and improving the product yield, but also utilizes the concave structure of the middle part of the inner core to ensure the size of the rubber body in the radial direction of the bushing, and realizes a stable connection between the rubber body and the inner core, which is conducive to improving the structural reliability of the bushing body.

[0028] (5) The outer tube is provided with third limiting protrusions that correspond to the two opposite sides of the inner core, and the third limiting protrusions are also covered with rubber. This can improve the limiting protection system of the bushing body in different directions, and at the same time prevent the rubber body from being overstretched under extreme working conditions, which helps to ensure the reliability of the bushing product.

[0029] (6) The flow channel plate and the cup are fixed in the opening at the bottom of the outer tube by the pressure plate, and the pressure plate is snapped onto the outer tube. The pressure plate is also used to press the cup, flow channel plate and the rubber body covering the opening together, which facilitates the assembly and installation of hydraulic components at the bottom of the bushing body, helps to reduce the design and production cost of hydraulic bushing, and can also achieve reliable sealing of the hydraulic part in the bushing, which is conducive to ensuring the long-term stability of the vibration isolation performance of the hydraulic bushing.

[0030] (7) The flow channel plate includes an upper flow channel plate and a lower flow channel plate that are snapped together, so that the upper and lower flow channel plates are connected by snapping. A stepped structure that interlocks between the end faces of the upper and lower flow channel plates is provided. By utilizing the cooperation of the snapping structure and the stepped structure, it is possible to facilitate the snapping and assembly of the upper and lower flow channel plates, and ensure the overall sealing and structural stability of the flow channel plate. At the same time, it eliminates the traditional ultrasonic welding assembly method, reduces the number of processes, reduces the difficulty of flow channel plate assembly process, and reduces production costs.

[0031] (8) A sheet-like protrusion is set on the rubber body in the upper liquid chamber, with one end of the sheet-like protrusion connected to the rubber body and the other end extending into the upper liquid chamber in a cantilever shape. This not only allows the sheet-like protrusion to act as an elastic vibration absorber with a response speed much faster than the damping fluid when the damping fluid is too slow to flow due to its large inertia during high-frequency vibration, thus causing the bushing stiffness to harden, but also allows the sheet-like protrusion to absorb energy through its own high-frequency vibration and deformation, responding to the pressure fluctuations of the damping fluid, breaking the "dead water" state of the damping fluid, suppressing the sharp rise in dynamic stiffness, and effectively avoiding the situation where traditional hydraulic bushings harden and fail under high-frequency vibration. At the same time, the auxiliary vibration absorption effect of the sheet-like protrusion can be used to provide additional vibration reduction capacity in the high-frequency range where hydraulic damping fails, improving the high-frequency noise problem of the bushing and helping to broaden the effective vibration isolation frequency band of the bushing.

[0032] (9) The outer tube is made of nylon, which can reduce the weight and material cost of the outer tube while meeting the strength requirements of the outer tube, which helps to achieve the lightweighting of the bushing product. At the same time, the nylon outer tube is made by injection molding, which is also convenient for molding complex internal structures and helps to reduce the manufacturing cost of the outer tube, thus increasing the overall competitiveness of the product.

[0033] The inner core is made of cast aluminum, which not only takes advantage of the high structural strength of cast aluminum to ensure the structural strength of the inner core itself and the stability of the overall bushing, but also takes advantage of the low weight of cast aluminum to further facilitate the lightweight design of the overall bushing.

[0034] Another object of this application is to provide a vehicle having a hydraulic bushing as described above.

[0035] The advantages of the vehicle described in this application compared to related technologies are the same as those of the hydraulic bushings mentioned above, and will not be repeated here. Attached Figure Description

[0036] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of the structure of the hydraulic bushing described in the embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the hydraulic bushing described in an embodiment of this application from another perspective;

[0039] Figure 3 This is a schematic diagram showing the arrangement of hydraulic components in the hydraulic bushing described in the embodiments of this application;

[0040] Figure 4 This is a schematic diagram of the hydraulic bushing described in the embodiment of this application, viewed from the axial direction.

[0041] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0042] Figure 6 for Figure 5 A magnified view of the lower part of the middle section;

[0043] Figure 7 for Figure 4 Cross-sectional view along the BB direction;

[0044] Figure 8 This is a schematic diagram of the outer tube structure described in an embodiment of this application;

[0045] Figure 9 This is a schematic diagram of the outer tube from another perspective, as described in an embodiment of this application.

[0046] Figure 10 This is a schematic diagram of the inner core structure described in the embodiments of this application;

[0047] Figure 11 This is a schematic diagram of the structure of the rubber body after molding according to an embodiment of this application;

[0048] Figure 12 This is a schematic diagram of the structure of the rubber body after molding according to an embodiment of this application (from another perspective).

[0049] Figure 13 This is a schematic diagram of the bushing body after molding, as described in the embodiments of this application;

[0050] Figure 14 This is a schematic diagram of the hydraulic assembly described in the embodiments of this application;

[0051] Figure 15 This is a schematic diagram of the flow channel plate described in an embodiment of this application;

[0052] Figure 16 for Figure 15 A cross-sectional view along the CC direction;

[0053] Figure 17 This is a schematic diagram of the upper flow channel plate described in an embodiment of this application;

[0054] Figure 18 This is a schematic diagram of the structure of the lower flow channel plate described in an embodiment of this application;

[0055] Figure 19 This is a schematic diagram of the structure of the leather bowl described in the embodiment of this application;

[0056] Figure 20 This is a schematic diagram of the structure of the pressure plate described in the embodiment of this application;

[0057] Explanation of reference numerals in the attached figures:

[0058] 1. Bushing body; 2. Hydraulic components;

[0059] 11. Outer tube; 12. Inner core; 13. Rubber body; 21. Flow channel plate; 22. Leather cup; 23. Pressure plate; 24. Steel ball;

[0060] 100. Liquid inlet chamber; 11a. Opening; 11b. Pressing surface; 111. Second limiting protrusion; 112. Third limiting protrusion; 113. Mounting groove; 114. Injection hole; 115. Flanged edge; 116. Reinforcing rib groove; 12s. Wedge surface; 121. Connecting hole; 122. First limiting protrusion; 123. Weight reduction hole; 13a. First recess; 13b. Second recess; 1 31. Connecting part; 132. Sheet-like protrusion; 133. Vibration damping part; 134. Covering part; 135. Flange; 200. Lower liquid chamber; 21a. Damping flow channel; 21b. Stepped structure; 211. Upper flow channel plate; 212. Lower flow channel plate; 2111. Upper flow channel; 2112. Snap-fit ​​hole; 2121. Lower flow channel; 2122. Snap-fit ​​head; 231. Snap-fit ​​protrusion;

[0061] k, groove; m, distance between bushing skeletons. Detailed Implementation

[0062] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0064] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0066] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0068] An embodiment of the first aspect of this application provides a hydraulic bushing, which is generally applicable to vehicles to support the installation of engines or transmissions in the vehicle. The hydraulic bushing of this embodiment, through its innovative structural design, can improve the damping ability of large amplitude vibrations and also improve the durability of the bushing, thereby improving the quality of use of the hydraulic bushing.

[0069] In related technologies, conventional hydraulic bushings all have liquid chambers arranged around the circumference of the bushing, and the liquid chambers are formed between the rubber main spring and the outer tube and inner core in the bushing. At the same time, damping fluid flows between the different liquid chambers separated by the rubber main spring to generate damping and achieve the required vibration reduction and buffering effect.

[0070] While existing hydraulic bushings can attenuate vibrations, their surrounding arrangement limits their effectiveness in attenuating large-amplitude vibrations in the vertical direction of the vehicle. Furthermore, under extreme vibration conditions, they are prone to damage due to impacts on the rubber coating of the flow channel system, leading to damping fluid leakage and affecting the durability of the bushings. This ultimately hinders the improvement of the overall quality of hydraulic bushings.

[0071] In view of this, in order to overcome the shortcomings of the related technology, the hydraulic bushing in this embodiment combines... Figures 1 to 20 As shown, the overall design includes a bushing body 1 arranged laterally along the axis, and a hydraulic assembly 2 located at the bottom of the bushing body 1.

[0072] The bushing body 1 includes an outer tube 11 and an inner core 12 connected to the outer tube 11 by a rubber body 13, and the bottom of the outer tube 11 is provided with an opening 11a.

[0073] The hydraulic assembly 2 includes a flow channel plate 21 and a rubber cup 22 disposed in the opening 11a. The flow channel plate 21 and the rubber body 13 form an upper liquid chamber 100, and the flow channel plate 21 and the rubber cup 22 form a lower liquid chamber 200. The upper liquid chamber 100 and the lower liquid chamber 200 are also connected through a damping flow channel 21a located in the flow channel plate 21, so that the damping fluid in the upper and lower liquid chambers can flow through the damping flow channel 21a to generate damping.

[0074] Therefore, with the above configuration, the bushing body 1 is arranged laterally along its axis, and the outer tube 11 and inner core 12 in the bushing body 1 are connected by a rubber body 13. Based on the vibration damping and buffering provided by the rubber body 13, the hydraulic component 2 is placed at the bottom of the bushing body 1. The flow channel plate 21 in the hydraulic component 2 forms an upper liquid chamber 100 between itself and the rubber body 13, and a lower liquid chamber 200 between itself and the cup 22. At the same time, a damping flow channel 21a connecting the upper and lower liquid chambers is provided in the flow channel plate 21. In this way, compared with the traditional bushing structure with the liquid chamber arranged around it, this embodiment can not only use the hydraulic component 2 at the bottom of the bushing body 1 and the liquid chambers arranged along the vertical direction of the bushing body 1, but also more directly cope with large amplitude vibrations in the vertical direction, improve the bushing's ability to attenuate large amplitude vibrations in the vertical direction of the whole vehicle, and reduce the probability of damage to the hydraulic part due to vibration and impact, thus improving the durability of the bushing and achieving the effect of improving the quality of hydraulic bushing use.

[0075] Of course, the hydraulic bushing in this embodiment, based on the above configuration, adopts a split design between the bushing body 1 and the bottom hydraulic component 2, which also makes the overall size of the hydraulic bushing smaller, and thus requires less installation space. It is very suitable for use in vehicles with a relatively compact engine compartment layout, and can greatly improve the applicability of the hydraulic bushing.

[0076] Based on the above overview, specifically, it is worth noting that the axis of the bushing body 1 is arranged laterally, meaning that from the perspective of the hydraulic bushing's usage in this embodiment, the axis of the bushing body 1 is horizontal. Of course, "horizontal" here includes the bushing body 1 being exactly horizontal, or having a certain angle with the horizontal direction.

[0077] In addition, continue to combine Figure 1 , Figure 2 and Figure 4 As shown in this embodiment, in some exemplary implementations, the inner core 12 is specifically connected to the outer tube 11 at its bottom via a connecting portion 131 in the rubber body 13. Meanwhile, gaps t are formed between the top of the inner core 12 and its two opposite sides and the outer tube 11, and the outer wall of the inner core 12 and the inner wall of the outer tube 11 are covered with the rubber body 13.

[0078] Therefore, it can be understood that by connecting the bottom of the inner core 12 to the outer tube 11 through the connecting portion 131 in the rubber body 13, and by forming a gap t between the top of the inner core 12 and the two opposite sides of the outer tube 11, and by covering the outer wall of the inner core 12 and the inner wall of the outer tube 11 with the rubber body 13, this embodiment can utilize the large size of the connecting portion 131 in the rubber body 13 to facilitate the formation of the upper liquid chamber 100 with the flow channel plate 21 in the hydraulic assembly 2, and ensure the stability of the formed upper liquid chamber 100 structure, thereby effectively reducing the probability of damage to the hydraulic part in the bushing due to vibration and impact.

[0079] On the other hand, based on the gap t between the top of the inner core 12 and the two opposite sides and the outer tube 11, it is clear that this embodiment can also set the gap t, and the rubber body 13 covers the outer wall of the inner core 12 and the inner wall of the outer tube 11, so as to ensure the vibration damping and buffering effect of the rubber body 13 between the outer tube 11 and the inner core 12, thereby meeting the vibration damping and buffering requirements of the bushing in other directions other than the vertical direction.

[0080] In specific implementation, it is worth noting that the width of the gap t formed on the top of the inner core 12 and on the two opposite sides can be determined according to the overall design requirements of the bushing, so that while the inner core 12 can move relative to the outer tube 11, the movement of the inner core 11 can also be limited to prevent the connecting part 131 in the rubber body 13 from being overstretched.

[0081] Meanwhile, in addition to covering both the outer wall of the inner core 12 and the inner wall of the outer tube 11 with rubber body 13, in other embodiments, it is also possible to cover only the outer wall of the inner core 12 or only the inner wall of the outer tube 11 with rubber body 13. When covering only the outer wall of the inner core 12 or the inner wall of the outer tube 11 with rubber body 13, care should be taken to avoid direct contact between the inner core 12 and the outer tube 11 to prevent collision noise. Generally, it is still preferred to cover both the outer wall of the inner core 12 and the inner wall of the outer tube 11 with rubber body 13.

[0082] In this embodiment, in some exemplary implementations, the following continues to be combined Figure 4 , Figure 8 as well as Figure 10 As shown, two opposite sides of the bottom of the inner core 12 are also formed with wedge surfaces 12s, and a first limiting protrusion 122 is provided on both wedge surfaces 12s.

[0083] The first limiting protrusions 122 on both sides are arranged in pairs along the axial direction of the bushing body 1, and the outer tube 11 is also provided with second limiting protrusions 111 corresponding to the wedge surfaces 12s on each side. At this time, combined with... Figure 7As shown, viewed radially from the bushing body 1, the second limiting protrusions 111 on each side are located between the two first limiting protrusions 122 on the same side, and also combine with... Figure 1 , Figure 2 As shown, the first limiting protrusion 122 and the second limiting protrusion 111 are both covered in the connecting portion 131.

[0084] It is understood that by forming wedge surfaces 12s on two opposite sides at the bottom of the inner core 12, and setting first limiting protrusions 122 on each side wedge surface 12s, and correspondingly setting second limiting protrusions 111 on the outer tube 11, and making the second limiting protrusions 111 on each side located between the two first limiting protrusions 122 on the same side, and at the same time, the first limiting protrusions 122 and the second limiting protrusions 111 on each side are also covered in the connecting portion 131, so that this embodiment can not only utilize the relative arrangement of the first limiting protrusions 122 and the second limiting protrusions 111 in the radial direction of the bushing, and the distribution of the second limiting protrusions 111 and the two first limiting protrusions 122 in the axial direction of the bushing, but also shorten the distance m between the main skeletons in the bushing body 1, thereby improving the axial stiffness of the bushing, suppressing axial impact under large loads, and improving the reliability of the bushing product.

[0085] Meanwhile, based on the connection between the first limiting protrusion 122 and the second limiting protrusion 111 and the connecting portion 131 in the rubber body 13, this embodiment can obviously also increase the connection strength between the outer tube 11 and the inner core 12, prevent the inner core 12 from deflecting under heavy load, and avoid collision noise caused by direct contact between the limiting protrusions on the same side, thereby helping to further improve the quality of use of the hydraulic bushing.

[0086] In specific implementation, it is worth noting that, given the above-mentioned wedge surface 12s setting, the width of the bottom of the inner core 12 in this embodiment gradually decreases from top to bottom. At the same time, the first limiting protrusion 122 on each side can generally be integrally formed on the inner core 12, and similarly, the second limiting protrusion 111 can preferably also be integrally formed on the outer tube 11.

[0087] It should be noted that, in addition to the first limiting protrusions 122 on each side, the inner core 12 also has a connection hole 121, similar to the core structure in existing hydraulic bushings. The connection hole 121 is used for bolts and other connecting parts to pass through, so as to connect the bushing to the engine or transmission, and then install the engine or transmission into the vehicle.

[0088] In addition to the aforementioned connecting hole 121, in some exemplary embodiments, weight-reducing holes 123 may also be provided on the inner core 12. The diameter and number of the weight-reducing holes 123 are designed according to the cross-sectional dimensions of the inner core 12 and can be determined through structural simulation analysis, etc., and will not be elaborated here.

[0089] In this embodiment, we still combine Figure 7 and Figure 10 As shown, in some exemplary embodiments, a groove k located between two first limiting protrusions 122 is also provided on each side wedge surface 12s of the inner core 12, and a connecting portion 131 is provided between the two first limiting protrusions 122 on each side and in the groove k.

[0090] At this time, by setting a groove k between the two first limiting protrusions 122 on the wedge surface 12s, and making the connecting portion 131 of the rubber body 13 present between the two first limiting protrusions 122 and in the groove k, it can be understood that this embodiment can not only facilitate the flow and filling of rubber material during the vulcanization process of the rubber body 13, but also ensure that the rubber filling at the root position of the first limiting protrusion 122 is full, reduce defects such as missing rubber and air bubbles, and help improve the product yield of hydraulic bushings.

[0091] At the same time, this embodiment can obviously utilize the groove k to make the middle part of the inner core 12 concave, increasing the space for the adhesive at that location, that is, increasing the size of the connecting structure 131 at that location. In this way, the size of the rubber body 13 in the radial direction of the bushing can be guaranteed, and a stable connection between the rubber body 13 and the inner core 12 can be achieved, which is beneficial to improving the structural reliability of the bushing body 1.

[0092] In practical implementation, it is worth noting that the two sides of the groove k can extend to the root of each first limiting protrusion 122, and the groove k can be provided over the entire width of the wedge surface 12s. Meanwhile, the depth of the groove k should be such that it does not affect the structural strength of the inner core 12, but ensures the structural stability of the inner core 12 during use.

[0093] Continue to combine Figure 4 and Figure 8 As shown, in some exemplary embodiments of this embodiment, the outer tube 11 is provided with third limiting protrusions 112 arranged on two opposite sides corresponding to the inner core 12, and a rubber body 13 is covered on the third limiting protrusions 112 on each side.

[0094] At this time, by setting third limiting protrusions 112 on the outer tube 11 corresponding to the two opposite sides of the inner core 12, and making the rubber body 13 also covered on the third limiting protrusions 112, it is clear that this embodiment can improve the limiting protection system of the bushing body 1 in different directions (especially in combination with the first limiting protrusion 122 and the second limiting protrusion 111 arranged above), which can effectively prevent the rubber body 13 from being overstretched under extreme working conditions, and help ensure the reliability of the bushing product.

[0095] In specific implementation, it is worth noting that the aforementioned third limiting protrusion 112 can also be integrally formed on the outer tube 11. Furthermore, based on the arrangement of the third limiting protrusions 112 on both sides, the gap t located on the two opposite sides of the inner core 12 is formed between the third limiting protrusion 112 and the side of the inner core 12. The gap t located at the top of the inner core 12 is formed between the inner core 12 and the portion of rubber 13 located at the top of the outer tube 11. Figure 4 , Figure 5 As shown, the rubber body 13 located at the top of the inner tube 11 is convex downwards and has a certain thickness, so as to reliably buffer and limit the upward displacement of the inner core 12.

[0096] In this embodiment, given that the rubber body 13 is vulcanized and molded between the inner core 12 and the outer tube 11, combined with... Figure 11 and Figure 12 The structure of the vulcanized rubber body 13 shown is noteworthy. It is worth noting that a first pit 13a and a second pit 13b are formed in the molded rubber body 13. The two pits respectively accommodate the second limiting protrusion 111 and the third limiting protrusion 112, thereby achieving the coverage of the second limiting protrusion 111 and the third limiting protrusion 112 by the rubber body 13.

[0097] Meanwhile, the molded rubber body 13 has a covering portion 134, which is used to cover the inner core 12, and the covering portion 134 is connected to other parts of the rubber body 13 via a connecting portion 131, while the other parts of the rubber body 13 are used to cover the outer tube 11.

[0098] In some exemplary embodiments, such as this one, an outwardly flared flange 115 may be formed at one end of the outer tube 11, and the formed rubber body 13 may have a damping portion 133 covering the end face of the flange 115. With the flange 115 and the damping portion 133 covering it, after the hydraulic bushing is connected to the engine or transmission, the damping portion 133 on the flange 115 contacts the mounting portion of the engine or transmission (such as mounting legs or mounting brackets), thereby limiting excessive displacement of the engine or transmission and preventing impact noises.

[0099] In this embodiment, we continue to combine Figure 3 , Figure 6 , Figure 8 , Figure 9 as well as Figures 13 to 20 As shown, in some exemplary embodiments, the flow channel plate 21 and the cup 22 in the hydraulic assembly 2 are fixed in the opening 11a at the bottom of the outer tube 11 by a pressure plate 23.

[0100] Specifically, the pressure plate 23 is also engaged with the outer tube 11 by the interlocking protrusion 231 and the mounting groove 113. The pressure plate 23 presses together the cup 22, the flow channel plate 21 and the rubber body 13 covering the opening 11a to achieve a seal at the location of the hydraulic component 2.

[0101] It is understandable that by fixing the flow channel plate 21 and the cup 22 in the opening 11a at the bottom of the outer tube 11 through the pressure plate 23, and by snapping the pressure plate 23 onto the outer tube 11, the cup 22, the flow channel plate 21, and the rubber body 13 covering the opening 11a are also pressed together by the pressure plate 23. This embodiment not only facilitates the assembly and installation of the hydraulic component 2 at the bottom of the bushing body 1, which helps to reduce the design and production cost of the hydraulic bushing, but also obviously enables reliable sealing of the hydraulic part in the bushing, which is beneficial to ensuring the long-term stability of the vibration isolation performance of the hydraulic bushing.

[0102] In specific implementation, it is worth noting that the pressure plate 23 has an internally hollowed-out frame structure, and as a preferred embodiment, the pressure plate 23 can also be an injection-molded nylon part. Meanwhile, the snap-fit ​​protrusion 231 can be located on the pressure plate 23, and correspondingly, the snap-fit ​​groove 113 is located on the outer tube 11, to facilitate the design and fabrication of the outer tube 11 and the pressure plate 23.

[0103] Furthermore, it is worth noting that when the snap-fit ​​protrusion 231 on the pressure plate 23 is snapped into the snap-fit ​​groove 113 on the outer tube 11, preferably, for example, the snap-fit ​​protrusion 231 and the snap-fit ​​groove 113 are in planar contact. In this way, the planar contact makes it difficult for the snap-fit ​​protrusion 231 to fall out of the snap-fit ​​groove 113, which helps to ensure the stability of the snap-fit ​​of the pressure plate 23.

[0104] In this embodiment, in some exemplary implementations, the flow channel plate 21 specifically includes an upper flow channel plate 211 and a lower flow channel plate 212 that are fastened together.

[0105] The damping channel 21a is formed between the upper channel plate 211 and the lower channel plate 212, and the upper channel plate 211 and the lower channel plate 212 are snapped together. A stepped structure 21b that interlocks with each other is also provided between the end faces of the upper channel plate 211 and the lower channel plate 212.

[0106] At this point, it can be understood that by making the flow channel plate 21 include the upper flow channel plate 211 and the lower flow channel plate 212 that are snapped together, the upper and lower flow channel plates are connected by snapping, and a step structure 21b that interlocks between the end faces of the upper and lower flow channel plates is provided. In this embodiment, by utilizing the cooperation of the snapping structure and the step structure 21b, it is possible to facilitate the snapping assembly of the upper and lower flow channel plates and ensure the overall sealing and structural stability of the flow channel plate 21, while eliminating the need for the traditional ultrasonic welding assembly method. This can reduce the number of processes and help reduce the assembly process difficulty of the flow channel plate 21 and reduce its production cost.

[0107] In practice, it is worth noting that, see also Figures 16 to 18 As shown, the upper flow channel plate 211 and the lower flow channel plate 212 can generally be injection molded nylon parts. The upper flow channel plate 211 has a concave upper flow channel 2111 formed on it, and the lower flow channel plate 212 has a concave lower flow channel 2121 formed on it. When the upper and lower flow channel plates are fastened together, the upper flow channel 2111 and the lower flow channel 2121 together form the damping flow channel 21a inside the flow channel plate 21. The damping flow channel 21a is connected to the upper liquid chamber 100 through the opening on the upper flow channel plate 211, and is connected to the lower liquid chamber 200 through the opening on the lower flow channel plate 212.

[0108] Furthermore, from the cross-section of the flow channel plate 21, the stepped structure 21b formed between the end faces connecting the upper and lower flow channel plates can be designed in multiple groups to match the flow channels in the upper and lower flow channel plates. Each stepped structure 21b is generally composed of two corresponding single-stage steps to avoid complicating the structure of each flow channel plate and increasing the design and manufacturing costs.

[0109] In this embodiment, the snap-fit ​​connection between the upper flow channel plate 211 and the lower flow channel plate 212 is, as an example, still as follows: Figure 15 as well as Figure 17 and Figure 18 As shown, for example, multiple clips 2122 can be provided on the lower flow channel plate 212, and corresponding snap-fit ​​holes 2112 can be provided on the upper flow channel plate 211. The clips 2122 and snap-fit ​​holes 2112 are located at the center of the flow channel plate 21, and when the upper and lower flow channel plates are fastened together, each clip 2122 is snapped into its corresponding snap-fit ​​hole 2112 to snap the upper and lower flow channel plates together, and at the same time, the upper and lower flow channel plates can be engaged together by the step structure 21b.

[0110] Of course, in addition to the above-mentioned snap-fit ​​structure consisting of snap-fit ​​head 2122 and snap-fit ​​hole 2112, other suitable snap-fit ​​forms can be used to snap the upper and lower flow channel plates together in specific implementations, and there are no restrictions on them here.

[0111] Continue to combine Figure 9 , Figure 12 as well as Figure 13 As shown in this embodiment, it is also worth noting that the rubber body 13 covering the opening 11a described above has a pressing surface 11b at the opening 11a on the outer tube 11, and the bottom of the formed rubber body 13 also has an outwardly turned flange 135.

[0112] The flange is 135 as shown. Figure 6 As shown, the hydraulic assembly 2 is assembled into the opening 11a, with the edge of the upper end face of the flow channel plate 21 abutting against the pressure surface 11b via the flange 135. Then, the edge of the cup 22 abuts against the lower end face of the flow channel plate 21. Finally, the pressure plate 23 is snapped into the opening 11a, pressing the cup 22 and the flow channel plate 21 together. This allows the pressure surface 11b, flange 135, flow channel plate 21, cup 22, and pressure plate 23 to be pressed together, so that the elastic sealing effect of the flange 135 and the cup 22 can be used to achieve the required sealing effect at the upper and lower liquid chambers.

[0113] In this embodiment, as follows... Figure 9 As shown, in some exemplary embodiments, based on the setting of the bottom opening 11a, to ensure the structural strength of the bottom position of the outer tube 11, for example, a reinforcing rib groove 116 can be further provided at the bottom of the outer tube 11. The reinforcing rib groove 116 can be integrally formed on the outer tube 11 during its fabrication, and a reinforcing rib groove 116 can be provided on both sides of the opening 11a, with multiple reinforcing rib grooves 116 spaced apart on each side.

[0114] In this embodiment, in some exemplary implementations, it is still as follows Figure 6 and Figure 12 As shown, for example, a sheet-like protrusion 132 located in the upper liquid chamber 100 may be provided on the rubber body 13.

[0115] Specifically, there are two sheet-like protrusions 132 arranged opposite each other, with one end of each sheet-like protrusion 132 connected to the rubber body 13 and the other end extending into the upper liquid chamber 100.

[0116] At this time, by setting a sheet-like protrusion 132 in the upper liquid chamber 100 on the rubber body 13, and making one end of the sheet-like protrusion 132 connected to the rubber body 13 and the other end extending into the upper liquid chamber 100 in a cantilever shape, it can be understood that, on the one hand, this embodiment can be used as an elastic vibration absorber with a response speed much faster than the damping fluid when the damping fluid is too slow to flow due to its large inertia, resulting in hardening of the bushing stiffness under high-frequency and large vibration conditions. The sheet-like protrusion 132 can be used as an elastic vibration absorber with a response speed much faster than the damping fluid. It can absorb energy through its own high-frequency vibration and deformation, and respond to the pressure fluctuation of the damping fluid. This can break the "dead water" state of the damping fluid, suppress the sharp rise of the dynamic stiffness of the bushing, and effectively avoid the situation where the traditional hydraulic bushing hardens and fails under high-frequency vibration.

[0117] On the other hand, based on the design of the sheet-like protrusion 132, this embodiment can obviously also utilize the auxiliary vibration absorption effect of the sheet-like protrusion 132 to provide additional vibration reduction capability in the high-frequency range where hydraulic damping fails, thereby improving the high-frequency noise problem of the bushing and helping to broaden the effective vibration isolation frequency band of the bushing.

[0118] In specific implementation, the above-mentioned sheet-like protrusions 132 can be integrally prepared on the rubber body 13 during vulcanization molding, and the two sheet-like protrusions 132 can be arranged opposite each other, while the extension direction of each sheet-like protrusion 132 can not block the connection port of the damping flow channel 21a on the flow channel plate 21.

[0119] In addition, the thickness, height, and length of the sheet-like protrusions 132 can be determined according to the design requirements of the hydraulic bushing and through simulation analysis.

[0120] As an example, the root (the part connected to the rubber body 13) of the sheet-like protrusion 132 can be thicker and the end (the end extending into the upper liquid chamber 100) thinner, so that the stress distribution is more uniform, avoiding stress concentration at the root that could lead to tearing, and also making the end softer and easier to be excited by high-frequency vibrations. The height of the sheet-like protrusion 132 can, for example, occupy 1 / 3 to 1 / 2 of the height of the upper liquid chamber 100, to avoid the possibility of contact noise at low frequencies and large amplitudes due to excessive height, and to avoid the vibration absorption effect being insignificant due to insufficient height. The length of the sheet-like protrusion 132 is generally designed to have a suitable surface area for "flicking" the damping fluid; however, the length of the sheet-like protrusion 132 should not be too large to avoid occupying too much liquid chamber volume.

[0121] Meanwhile, in addition to the two oppositely arranged sheet-like protrusions 132, it is also possible to have one or more in practice. However, a single sheet-like protrusion 132 is prone to generating unidirectional inertial force during vibration, and a larger number of sheet-like protrusions 132 will increase manufacturing difficulty, increase costs, and occupy more liquid chamber volume. Therefore, it is still preferable to set the sheet-like protrusions 132 as two oppositely arranged.

[0122] In this embodiment, in some exemplary implementations, the outer tube 11 may be made of nylon, for example, and the inner core 12 may be made of cast aluminum, for example.

[0123] Thus, it is understandable that by using nylon to make the outer tube 11, the weight and material cost of the outer tube 11 can be reduced while meeting the strength requirements, which helps to achieve the lightweighting of the bushing product. At the same time, the nylon outer tube 11 is manufactured by injection molding, which also facilitates the molding of complex internal structures and helps to reduce the manufacturing cost of the outer tube 11, thereby increasing the overall competitiveness of the product.

[0124] The inner core 12 is made of cast aluminum, which not only takes advantage of the high structural strength of cast aluminum to ensure the structural strength of the inner core 12 and the stability of the overall bushing, but also obviously takes advantage of the low weight of cast aluminum to combine with the outer tube 11 made of nylon material, which further facilitates the lightweight design of the overall bushing.

[0125] In practice, both the nylon outer tube 11 and the cast aluminum inner core 12 can be manufactured using conventional injection molding and die casting processes. Furthermore, besides using nylon for the outer tube 11 and cast aluminum for the inner core 12, it is also feasible to use other suitable materials for the outer tube 11 and inner core 12 based on specific requirements.

[0126] It is worth noting that the leather cup 22 in this embodiment can generally also be made of a suitable rubber material, and see [reference needed]. Figure 19 As shown, a bulging portion can be formed in the middle of the cup 22 to increase the elastic deformation capacity of the cup 22, so that the lower liquid chamber 200 has a more suitable volume.

[0127] In addition, in this embodiment, combined with Figure 4 , Figure 6 , Figure 8 as well as Figure 14 and Figure 15 As shown, based on the configuration of the hydraulic component 2, an injection hole 114 is also provided on the outer tube 11. When the hydraulic component 2 is assembled into the opening 11a, the injection hole 114 is connected to the damping fluid injection channel on the flow channel plate 21, so that damping fluid can be injected into the upper and lower liquid chambers through the injection hole 114. After the damping fluid is filled, the injection hole 114 can be sealed by the steel ball 24 pressed into it to prevent the damping fluid from leaking out.

[0128] It is worth noting that, regarding the hydraulic bushing of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still made by... Figures 1 to 20As shown, it may include, for example, a bushing body 1 arranged laterally along the axis, and a hydraulic assembly 2 located at the bottom of the bushing body 1.

[0129] The bushing body 1 includes an outer tube 11 made of nylon and an inner core 12 connected to the outer tube 11 by a rubber body 13. The inner core 12 is made of cast aluminum. The hydraulic component 2 is disposed in the opening 11a at the bottom of the outer tube 11. The hydraulic component 2 includes a flow channel plate 21 and a cup 22 disposed in the opening 11a. The flow channel plate 21 and the rubber body 13 form an upper liquid chamber 100, and the flow channel plate 21 and the cup 22 form a lower liquid chamber 200. The upper liquid chamber 100 and the lower liquid chamber 200 are connected by a damping flow channel 21a in the flow channel plate 21.

[0130] Furthermore, the bottom of the inner core 12 is connected to the outer tube 11 via a connecting portion 131 in the rubber body 13. A gap t is formed between the top of the inner core 12 and its two opposite sides and the outer tube 11. Wedge surfaces 12s are formed on the two opposite sides of the bottom of the inner core 12, and each of the two wedge surfaces 12s has a first limiting protrusion 122. A corresponding second limiting protrusion 111 is also provided on the outer tube 11. Simultaneously, a groove k is provided on each side wedge surface 12s, located between the two first limiting protrusions 122. A connecting portion 131 is provided between the two first limiting protrusions 122 and within the groove k. A third limiting protrusion 112 is also provided on the outer tube 11, corresponding to the two opposite sides of the inner core 12.

[0131] Additionally, the flow channel plate 21 and the cup 22 are fixed in the opening 11a by the pressure plate 23. The pressure plate 23 is engaged with the outer tube 11 by the engaging protrusions 231 and the engaging groove 113, and the pressure plate 23 presses the cup 22, the flow channel plate 21 and the rubber body 13 covering the opening 11a together. At the same time, the flow channel plate 21 includes an upper flow channel plate 211 and a lower flow channel plate 212 that are fastened together. The rubber body 13 is also provided with sheet-like protrusions 132 located in the upper liquid chamber 100. There are two sheet-like protrusions 132 arranged opposite to each other, and one end of each sheet-like protrusion 132 is connected to the rubber body 13, while the other end extends into the upper liquid chamber 100.

[0132] In the preferred embodiment of the hydraulic bushing above, the specific settings and arrangements of the bushing body 1, hydraulic components 2, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the bushing body 1 and hydraulic components 2 can also be referred to the descriptions in the above exemplary embodiments.

[0133] The hydraulic bushing of this embodiment adopts the above design. The hydraulic component 2 is located at the bottom of the bushing body 1, and the liquid chamber formed therein is arranged along the vertical direction of the bushing body 1 (that is, the vertical direction of the whole vehicle). This allows it to more directly cope with large amplitude vibrations in the vertical direction. It can improve the bushing's ability to attenuate large amplitude vibrations in the vertical direction of the whole vehicle, and can also reduce the probability of damage to the hydraulic parts due to vibration and impact. This can improve the durability of the bushing and thus improve the quality of use of the hydraulic bushing.

[0134] An embodiment of the second aspect of this application provides a vehicle in which the hydraulic bushing described in the first aspect embodiment is provided.

[0135] In the vehicle of this embodiment, the aforementioned hydraulic bushing can be used, for example, for the installation of an engine or transmission in the vehicle. Alternatively, in the case of a new energy vehicle, the aforementioned hydraulic bushing can also be used for the installation of a drive motor or the like in the vehicle. Furthermore, the specific installation method of the aforementioned hydraulic bushing for installing an engine, transmission, or drive motor into the vehicle can be found in the relevant structures in existing vehicles, and will not be repeated here.

[0136] The vehicle in this embodiment, by adopting the hydraulic bushing in the first aspect embodiment described above, can improve the bushing's ability to attenuate large-amplitude vibrations in the vertical direction of the entire vehicle, and can also improve the bushing's durability, thus helping to improve the quality of use of the hydraulic bushing and having good practicality.

[0137] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A hydraulic bushing, characterized in that: It includes a bushing body (1) arranged laterally along the axis, and a hydraulic assembly (2) located at the bottom of the bushing body (1). The bushing body (1) includes an outer tube (11) and an inner core (12) connected to the outer tube (11) by a rubber body (13), and the bottom of the outer tube (11) is provided with an opening (11a). The hydraulic assembly (2) includes a flow channel plate (21) and a cup (22) disposed in the opening (11a), and an upper liquid chamber (100) is formed between the flow channel plate (21) and the rubber body (13), and a lower liquid chamber (200) is formed between the flow channel plate (21) and the cup (22). The upper liquid chamber (100) and the lower liquid chamber (200) are connected through a damping flow channel (21a) in the flow channel plate (21).

2. The hydraulic bushing according to claim 1, characterized in that: The bottom of the inner core (12) is connected to the outer tube (11) through the connecting part (131) in the rubber body (13); The top of the inner core (12) and the two opposite sides are formed with the outer tube (11) with a gap (t), and the outer wall of the inner core (12) and / or the inner wall of the outer tube (11) are covered with the rubber body (13).

3. The hydraulic bushing according to claim 2, characterized in that: The inner core (12) has two opposite sides at the bottom respectively formed with wedge surfaces (12s), and each of the two wedge surfaces (12s) is provided with a first limiting protrusion (122). The first limiting protrusions (122) on both sides are two arranged at intervals along the axial direction of the bushing body (1), and the outer tube (11) is provided with second limiting protrusions (111) respectively corresponding to the wedge surfaces (12s) on each side. From the radial view of the bushing body (1), the second limiting protrusion (111) on each side is located between the two first limiting protrusions (122) on the same side, and both the first limiting protrusion (122) and the second limiting protrusion (111) are covered in the connecting portion (131).

4. The hydraulic bushing according to claim 3, characterized in that: Each side of the wedge surface (12s) is provided with a groove (k) located between the two first limiting protrusions (122), and the connecting portion (131) is provided between the two first limiting protrusions (122) and in the groove (k).

5. The hydraulic bushing according to claim 2, characterized in that: The outer tube (11) is provided with two opposite sides of the inner core (12) respectively, and the rubber body (13) is covered on the third limiting protrusion (112).

6. The hydraulic bushing according to claim 1, characterized in that: The flow channel plate (21) and the leather cup (22) are fixed in the opening (11a) by a pressure plate (23); The pressure plate (23) is engaged with the outer tube (11) by the interlocking protrusion (231) and the mounting groove (113), and the pressure plate (23) presses together the cup (22), the flow channel plate (21) and the rubber body (13) covering the opening (11a).

7. The hydraulic bushing according to claim 6, characterized in that: The flow channel plate (21) includes an upper flow channel plate (211) and a lower flow channel plate (212) that are fastened together. The damping channel (21a) is formed between the upper channel plate (211) and the lower channel plate (212), the upper channel plate (211) and the lower channel plate (212) are snapped together, and a plurality of interlocking stepped structures (21b) are provided between the end faces of the upper channel plate (211) and the lower channel plate (212) that are connected.

8. The hydraulic bushing according to claim 1, characterized in that: The rubber body (13) is provided with sheet-like protrusions (132) located in the upper liquid chamber (100). The sheet-like protrusions (132) are two oppositely arranged, and one end of each sheet-like protrusion (132) is connected to the rubber body (13), and the other end extends into the upper liquid chamber (100).

9. The hydraulic bushing according to any one of claims 1 to 8, characterized in that: The outer tube (11) is made of nylon, and / or the inner core (12) is made of cast aluminum.

10. A vehicle, characterized in that: The vehicle is equipped with a hydraulic bushing as described in any one of claims 1 to 9.

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