A power assembly suspension damping mechanism, a suspension bushing, and a vehicle

Abstract

A power assembly suspension damping mechanism is arranged outside a rubber bushing of a power assembly suspension, comprising a shell, a damping energy dissipation device is arranged inside the shell, a force transmission component is arranged at one end of the shell, one end of the force transmission component is connected with the rubber bushing, the other end of the force transmission component penetrates through the shell and contacts with the damping energy dissipation device, and vibration of the rubber bushing is transmitted to the damping energy dissipation device through the force transmission component. The damping energy dissipation device comprises a damping plate, a damping spring, a transmission rod, a sliding piece, an inclined block and a counter thrust component. Multilayer cyclic damping is realized inside the damping mechanism, the damping effect is improved, the service life of the rubber bushing is further improved by reducing vibration. The application also relates to a suspension bushing provided with the power assembly suspension damping mechanism and a vehicle provided with the power assembly suspension bushing.

Description

Technical Field

[0001] The present invention relates to the technical field of powertrain suspension, and in particular to a powertrain suspension shock-absorbing mechanism, a suspension bushing equipped with the powertrain suspension shock-absorbing mechanism, and a vehicle provided with the powertrain suspension bushing. Background Art

[0002] The vehicle's powertrain and frame are connected through a suspension system. To effectively control vehicle body vibrations caused by unbalanced excitation from the road or wheels, the suspension is used to reduce and control the transmission of engine vibrations and also supports the vehicle's powertrain. In the current automotive industry, the most widely used suspensions are traditional rubber suspensions and hydraulic suspensions with better dynamic and static performance.

[0003] When the existing suspension bushing is in use, the internal rubber body is easy to break, causing damage to the rubber bushing, which in turn affects the shock absorption of the entire vehicle and has a short service life. In addition, the existing rubber bushing body is usually in direct contact with metal, and friction during operation is easy to generate noise and shorten the service life.

[0004] CN220668257U discloses a rubber bushing for engine suspension, comprising a rubber bushing body, the rubber bushing body comprising an outer shell and a metal core, reinforcing steel being arranged between the outer shell and the metal core, a first rubber layer being fixedly connected between the reinforcing steel and the inner wall of the outer shell, a second rubber layer being fixedly connected between the inner wall of the reinforcing steel and the metal core, the first rubber layer and the second rubber layer being vulcanized, the metal core, the outer shell and the reinforcing steel being bonded and fixed, and then a baffle and a fixing ring being sleeved on both ends of the metal core, the metal core and the fixing ring being fixed by countersunk bolts, and after completion, the bushing body being mounted on a suspension bracket for use, the baffle being arranged can prevent the first rubber layer and the second rubber layer from being exposed to the outside world for a long time, causing oxidation corrosion, thereby increasing the service life of the first rubber layer and the second rubber layer, and the reinforcing steel being arranged can increase the rigidity strength of the device, thereby improving the service life of the device.

[0005] CN110978975A discloses a bushing for a pure electric vehicle powertrain suspension, comprising an outer tube and an inner core. The inner core is coaxially disposed within the outer tube, and the inner core and outer tube are vulcanized together via a rubber main spring. Advantageously, the rubber main spring comprises an inner rubber connecting layer covering the outer wall of the inner core and an outer rubber connecting layer covering the inner wall of the outer tube. The outer and inner rubber connecting layers are connected via a rubber support layer. A vibration-absorbing layer is disposed between the outer and inner rubber connecting layers, and the vibration-absorbing layer protrudes from the rubber support layer. Advantageously, the vibration-absorbing layer disposed between the outer and inner rubber connecting layers significantly reduces the bushing's high-frequency dynamic stiffness in the 800-3000Hz frequency range, significantly improving the bushing's overall vibration isolation performance.

[0006] However, the cost of hydraulic mounts is high, and the shock absorption effect and service life of the rubber bushings used in the prior art are still limited. This problem has not yet been well solved. Summary of the Invention

[0007] The object of the present invention is to provide a powertrain suspension shock-absorbing mechanism, a powertrain suspension bushing equipped with the shock-absorbing mechanism, and a vehicle provided with the powertrain suspension bushing, to achieve multi-level cyclic shock absorption inside the shock-absorbing mechanism, thereby improving the shock absorption effect, further increasing the service life of the rubber bushing by reducing vibration, and solving the problems of low shock absorption effect and service life of the rubber bushing in the prior art at a lower cost.

[0008] The present invention provides the following solutions

[0009] A powertrain suspension shock-absorbing mechanism is arranged on the outside of a rubber bushing of the powertrain suspension, and includes a shell, a shock-absorbing and energy-absorbing device is arranged inside the shell, and a force transmission component is provided at one end of the shell, one end of the force transmission component is connected to the rubber bushing, and the other end passes through the shell and contacts the shock-absorbing and energy-absorbing device. The vibration of the rubber bushing is transmitted to the shock-absorbing and energy-absorbing device through the force transmission component.

[0010] Furthermore, the shock-absorbing and energy-absorbing device includes a first shock-absorbing plate, the top surface of the first shock-absorbing plate is in contact with the force transmission component, and the bottom surface of the first shock-absorbing plate is connected to a first shock-absorbing spring. The vibration is transmitted to the first shock-absorbing plate through the force transmission component, and then transmitted to the first shock-absorbing spring by the first shock-absorbing plate.

[0011] Furthermore, the shock-absorbing and energy-dissipating device also includes a second shock-absorbing plate, and the top surface of the second shock-absorbing plate is connected to the first shock-absorbing spring.

[0012] Furthermore, a sliding member is provided below the second damping plate, and the sliding member can slide in a horizontal direction.

[0013] Furthermore, a transmission rod is connected to the bottom surface of the first shock-absorbing plate, a sliding groove is provided on the sliding member, and the transmission rod passes through the second shock-absorbing plate and is slidably connected to the sliding groove.

[0014] Furthermore, a second shock-absorbing spring is provided between the sliding member and the housing, and the second shock-absorbing spring is compressed when the sliding member slides.

[0015] Furthermore, the sliding member is connected to a first inclined block, and a second inclined block is provided to cooperate with the first inclined block. The second inclined block can slide vertically, and when the sliding member slides, it drives the first inclined block to push the second inclined block to slide vertically.

[0016] Furthermore, a reverse thrust component is connected to the top surface of the second inclined block, which can slide together with the second inclined block and push the second shock-absorbing plate to slide upward, thereby further compressing the first shock-absorbing spring.

[0017] The present invention also provides a suspension bushing, comprising the above-mentioned powertrain suspension shock-absorbing mechanism.

[0018] The present invention also provides a vehicle comprising the suspension bushing.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The powertrain suspension shock-absorbing mechanism provided by the present invention can achieve multiple cycles of shock absorption inside the suspension shock-absorbing mechanism by transmitting the vibration of the rubber bushing to the shock-absorbing energy-dissipating device, thereby improving the shock absorption effect and the service life of the rubber bushing; and the suspension shock-absorbing mechanism is low in cost, flexible and compact, and easy to arrange, thereby solving the problems of low shock absorption effect and service life of the rubber bushing in the prior art under conditions of low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Attachment Figure 1 A schematic diagram of a suspension bushing equipped with the powertrain suspension shock-absorbing mechanism of the present invention;

[0023] Attachment Figure 2 A schematic cross-sectional view of a suspension bushing equipped with the powertrain suspension damping mechanism of the present invention;

[0024] Attachment Figure 3 is a cross-sectional schematic diagram of the powertrain suspension shock-absorbing mechanism of the present invention in an initial state;

[0025] Attachment Figure 4 Schematic cross-sectional view of the powertrain suspension shock absorption mechanism of the present invention during the shock absorption process;

[0026] Attachment Figure 5 Schematic cross-sectional view of the rubber bushing according to embodiment 2 of the present invention;

[0027] Attachment Figure 6 This is a schematic diagram of the partial connection of the rubber bushing described in Example 2 of the present invention. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of this application more clear, this application will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0029] The terms used in the examples of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in the examples of this application and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two.

[0030] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0031] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0032] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0033] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0034] It should be noted in particular that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0035] Example 1, please refer to Figure 1 and 2 As shown, there are several powertrain suspension damping mechanisms 2 described in the present invention, which are symmetrically arranged in groups of two on the outside of the rubber bushing 1 of the powertrain suspension and evenly arranged along the outer side of the cylindrical rubber bushing 1.

[0036] See also Figure 3 and 4 As shown, the powertrain suspension shock-absorbing mechanism 2 is made of aluminum alloy, and can also be made of other metal materials or plastics; the powertrain suspension shock-absorbing mechanism 2 includes a shell 21, and a shock-absorbing and energy-absorbing device 23 is arranged inside the shell 21. A force transmission component 22 is provided at one end of the shell 21. In this embodiment, a metal rod is used as the force transmission component, and a plastic rod, plate, spring, etc. can also be used; one end of the force transmission component 22 is connected to the rubber bushing 1, and the other end passes through the shell 21 and contacts the shock-absorbing and energy-absorbing device 23. The vibration of the rubber bushing 1 is transmitted to the shock-absorbing and energy-absorbing device 23 through the force transmission component 22.

[0037] Specifically, the shock-absorbing and energy-absorbing device 23 includes a first shock-absorbing plate 231, the top surface of which is in contact with the force-transmitting component 22, and the bottom surface of which is connected to a first shock-absorbing spring 232. Vibration is transmitted to the first shock-absorbing plate 231 through the force-transmitting component 22, and then transmitted to the first shock-absorbing spring 232 by the first shock-absorbing plate 231. The other end of the first shock-absorbing spring 232 is connected to the top surface of the second shock-absorbing plate 233. A sliding member 235 is provided below the second shock-absorbing plate 233, and a first horizontal slide rail 211 is provided on the inner wall of the shell 21. The lower end of the sliding member 235 is connected to the first slide rail 211, so that it can slide in the horizontal direction but cannot move in the vertical direction.

[0038] Specifically, a transmission rod 234 is connected to the bottom surface of the first damping plate 231. A slider 2341 is provided at the other end of the transmission rod 234. A slide groove 2351 is provided on the sliding member 235. The transmission rod 234 passes through the second damping plate 233 and is slidably connected to the slide groove 2351 through the slider 2341. The slide groove 2351 is arranged obliquely. When the transmission rod 234 moves downward, it generates a horizontal reverse force component on the slide groove 2351, pushing the sliding member 235 to slide horizontally.

[0039] Specifically, a second damping spring 236 is provided between the sliding member 235 and the housing 21. When the sliding member 235 slides, the second damping spring 236 is compressed. A first inclined block 237 is further connected to the sliding member 235, preferably fixedly connected, or bolted. A second inclined block 238 is provided to cooperate with the first inclined block 237. The cross-sections of the first and second inclined blocks are both right triangles. The inclined surface of the first inclined block 237 faces upward, and the inclined surface of the second inclined block 238 faces downward. The two inclined surfaces are parallel to and in contact with each other. A second vertical slide rail 212 is provided on the inner wall of the housing 21. The second inclined block 238 is slidably connected to the second slide rail 212 and can slide in the vertical direction. When the sliding member 235 slides, it drives the first inclined block 237 to slide horizontally, generating a vertical component of force on the second inclined block 238, thereby pushing the second inclined block 238 to slide vertically upward.

[0040] Specifically, a reverse thrust component 239 is connected to the top surface of the second inclined block 238, which can be fixedly connected or bolted. In this embodiment, the reverse thrust component 239 is a "T"-shaped rod, but can also be a straight rod or other components. The reverse thrust component 239 can slide with the second inclined block 238 and push the second shock-absorbing plate 233 to slide upward, thereby further compressing the first shock-absorbing spring 232. In the initial state, when the force transmission component 22 is not transmitting vibration, the second shock-absorbing plate 233 can be supported on the top of the sliding member 235, or a support member can be provided on the housing 21 to prevent the second shock-absorbing plate 233 from sliding downward under the action of gravity.

[0041] During operation, the rubber bushing 1 will rebound back and forth when it is vibrated, pushing the force transmission component 22 to descend and push the first shock-absorbing plate 231, transmitting the vibration received to the first shock-absorbing plate 231. At this time, the first shock-absorbing plate 231 weakens the vibration received once; the first shock-absorbing plate 231 descends and compresses the first shock-absorbing spring 232, and the vibration first passes through the first shock-absorbing spring 232 to consume energy and weaken it for the second time; at the same time, when the first shock-absorbing plate 231 descends, it will drive the transmission rod 234 and the slider 2341 to descend, and when the slider 2341 descends, it will move in the slide groove 2351, thereby pushing the sliding member 235 to the water The sliding member 235 slides smoothly and compresses the second shock-absorbing spring 236, and the vibration passes through the second shock-absorbing spring 236 to consume energy again and is weakened for the third time; further, when the sliding member 235 slides, it will drive the first inclined block 237 to slide together, and the first inclined block 237 acts on the second inclined block 238 to push the second inclined block 238 together with the reverse thrust component 239 to move upward, and the reverse thrust component 239 contacts the bottom of the second shock-absorbing plate 233, pushing the second shock-absorbing plate 233 to move upward and further compressing the first shock-absorbing spring 232, and the vibration passes through the second shock-absorbing plate 233 and the first shock-absorbing spring 232 to consume energy again and be weakened for the fourth time.

[0042] The powertrain suspension shock-absorbing mechanism described in this embodiment can achieve multi-level cyclic shock absorption of vibrations inside, thereby improving the shock absorption effect and increasing the service life of the rubber bushing.

[0043] Example 2, please refer to Figure 1 and Figure 2 As shown, this embodiment provides a suspension bushing, including the powertrain suspension shock absorbing mechanism 2 described in Example 1, and has all the advantages of the powertrain suspension shock absorbing mechanism 2 described.

[0044] For details, please refer to Figure 5 and Figure 6As shown, the suspension bushing of this embodiment also includes a rubber bushing 1 and a metal core 3. The rubber bushing 1 includes an outer shell 11, and a reinforcing rib 13 is provided between the outer shell 11 and the metal core 3. The provision of the reinforcing steel 13 can increase the rigidity and service life of the rubber bushing 1. The reinforcing rib 13 is provided from the top of the outer shell 11 to the bottom of the outer shell 11, connecting the metal core 3, the outer shell 11 and the reinforcing steel 13. Then, the rubber bushing 1 is installed on the suspension bracket for use. A rubber body 14 is provided inside the rubber bushing 1. The rubber body 14 is vulcanized. Vulcanization of the rubber body 14 will change its performance. Due to the formation of sulfur bridges, the rubber is The interaction between the sub-chains is enhanced, which significantly improves the elasticity and wear resistance of the rubber, and vulcanization also cross-links the rubber molecular chains, thereby improving the strength and hardness of the rubber; the rubber body 14 is composed of a first rubber layer 141, a second rubber layer 142 and a crack stop 143, and the crack stop 143 is arranged in the middle position between the first rubber layer 141 and the second rubber layer 142. Through the setting of the crack stop 143, the tensile strength of the first rubber layer 141 and the second rubber layer 142 can be improved to prevent the rubber body 14 from breaking, thereby increasing the service life of the rubber body 14.

[0045] Specifically, the metal core 3 is fixedly connected with a baffle 15. By pressing the baffle 15 against the top and bottom of the rubber body 14, the rubber body 14 can be shielded to prevent the rubber body 14 from being exposed to the outside for a long time, causing oxidation corrosion, which is beneficial to improving the service life of the rubber body 14. At the same time, the existence of the baffle 15 can avoid direct contact and friction between the rubber body 14 and the metal parts, reducing noise. The baffle 15 blocks the top and bottom of the rubber body 14, and the baffle 15 serves as a connecting medium between the rubber body 14 and the shell 11; fixed rings 16 are fixedly provided at both ends of the metal core 3, and the fixing ring 16 is provided with a through hole, which is convenient for connection with the suspension bracket; the rubber bushing 1 is provided with a heat dissipation hole 17 for dissipating heat from the rubber body 14 therein, and a dustproof net 171 is provided inside the heat dissipation hole 17, and the rubber body 14 can be Heat dissipation: The dust-proof net 171 provided can prevent dust from entering the rubber bushing 1 from the heat dissipation hole 17, thereby increasing the service life of the rubber bushing 1; a sealing ring 18 is provided at the connection between the metal core 3 and the outer shell 11. The sealing ring 18 plays the role of sealing the metal core 3, preventing dust from entering the interior of the rubber bushing 1 from the gap at the connection between the rubber bushing 1 and the metal core 3, thereby increasing the service life of the rubber bushing 1. At the same time, the sealing ring 18 can prevent the metal core 3 and the rubber bushing 1 from direct contact and friction, thereby causing damage. Direct friction will generate noise. The setting of the sealing ring 18 can both protect the metal core 3 and reduce noise; rubber pads 19 are fixed at both ends of the rubber bushing 1. Through the setting of the rubber pads 19, the rubber bushing 1 is prevented from directly contacting and rubbing with the metal connecting parts to generate noise, thereby achieving the effect of noise reduction and protecting the rubber bushing 1.

[0046] Specifically, a slot 111 is provided on the inner side of the shell 11, and a placement groove 112 is provided on the outer side of the shell 11. The slot 111 and the placement groove 112 are connected through a transverse groove 113. The side of the rubber body 14 is provided with an insert 144 that cooperates with the slot 111. The insert 144 is located inside the slot 111. One end of the insert 144 is provided with a threaded groove. By rotating the bolt 12 so that it passes through the transverse groove 113 and is connected to the threaded groove, the screw head of the bolt 12 is located inside the placement groove 112, which is conducive to hiding the bolt 12. This can complete the tight connection between the rubber body 14 and the shell 11, increase the connection strength between the shell 11 and the rubber body 14, improve the ability to resist axial impact loads, and increase the service life.

[0047] This embodiment also provides a vehicle, comprising the above-mentioned suspension bushing, and having all the advantages of the suspension bushing.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A powertrain suspension damping mechanism, arranged on the outside of a rubber bushing (1) of the powertrain suspension, characterized in that: The invention comprises a shell (21), wherein a shock-absorbing energy-dissipating device (23) is provided inside the shell (21), a force transmission component (22) is provided at one end of the shell (21), one end of the force transmission component (22) is connected to the rubber bushing (1), and the other end passes through the shell (21) and contacts the shock-absorbing energy-dissipating device (23), and the vibration of the rubber bushing (1) is transmitted to the shock-absorbing energy-dissipating device (23) through the force transmission component (22); the shock-absorbing energy-dissipating device (23) comprises a first shock-absorbing plate (231), the top surface of the first shock-absorbing plate (231) contacts the force transmission component (22), and the bottom surface of the first shock-absorbing plate (231) is connected to a first shock-absorbing spring (232), and the vibration is transmitted to the first shock-absorbing plate (231) through the force transmission component (22), and then transmitted to the first shock-absorbing plate (231) by the first shock-absorbing plate (231). A shock-absorbing spring (232); the shock-absorbing energy-dissipating device (23) further comprises a second shock-absorbing plate (233), a sliding member (235) is provided below the second shock-absorbing plate (233), and the sliding member (235) can slide in the horizontal direction; the sliding member (235) is connected to a first inclined block (237), and a second inclined block (238) is provided in cooperation with the first inclined block (237), and the second inclined block (238) can slide in the vertical direction, and when the sliding member (235) slides, it drives the first inclined block (237) to push the second inclined block (238) to slide vertically; the top surface of the second inclined block (238) is connected to a reverse thrust component (239), which can slide with the second inclined block (238) and push the second shock-absorbing plate (233) to slide upward, thereby further compressing the first shock-absorbing spring (232).

2. The powertrain suspension shock absorption mechanism according to claim 1, characterized in that: The top surface of the second shock-absorbing plate (233) is connected to the first shock-absorbing spring (232).

3. The powertrain suspension shock absorption mechanism according to claim 2, characterized in that: The bottom surface of the first damping plate (231) is connected to a transmission rod (234), a sliding groove (2351) is provided on the sliding member (235), and the transmission rod (234) passes through the second damping plate (233) and is slidably connected to the sliding groove (2351).

4. The powertrain suspension shock absorption mechanism according to claim 3, characterized in that: A second shock-absorbing spring (236) is provided between the sliding member (235) and the housing (21), and the second shock-absorbing spring (236) is compressed when the sliding member (235) slides.

5. A suspension bushing, characterized in that: It comprises the powertrain suspension shock absorbing mechanism according to any one of claims 1 to 4.

6. The suspension bushing according to claim 5, characterized in that The suspension bushing further comprises a rubber bushing (1) and a metal core (3); the rubber bushing (1) comprises an outer shell (11), a reinforcing rib (13) is provided between the outer shell (11) and the metal core (3), and the reinforcing rib (13) is provided from the top of the outer shell (11) to the bottom of the outer shell (11); a rubber body (14) is provided inside the rubber bushing (1), and the rubber body (14) is a vulcanized rubber body; the rubber body (14) consists of a first rubber layer (141), a second rubber layer (142) and a crack stopper (143), and the crack stopper (143) is provided at a middle position between the first rubber layer (141) and the second rubber layer (142).

7. The suspension bushing according to claim 6, wherein: The metal core (3) is fixedly connected to a baffle (15), which abuts against the top and bottom of the rubber body (14); fixed rings (16) are fixedly provided at both ends of the metal core (3), and the fixed rings (16) are provided with through holes; and a sealing ring (18) is provided at the connection between the metal core (3) and the housing (11).

8. The suspension bushing according to claim 6, wherein: The rubber bushing (1) is provided with a heat dissipation hole (17) for dissipating heat from the rubber body (14) therein, and a dustproof net (171) is provided inside the heat dissipation hole (17); rubber pads (19) are fixed to both ends of the rubber bushing (1).

9. The suspension bushing according to claim 6, wherein: The inner side of the shell (11) is provided with a slot (111), the outer side of the shell (11) is provided with a placement groove (112), the slot (111) and the placement groove (112) are connected through a transverse groove (113), and the side of the rubber body (14) is provided with an insert (144) that cooperates with the slot (111), the insert (144) is located inside the slot (111), and one end of the insert (144) is provided with a threaded groove, the bolt (12) passes through the transverse groove (113) and is connected to the threaded groove, and the screw head of the bolt (12) is hidden inside the placement groove (112).

10. A vehicle, characterized in that: Comprising the suspension bushing according to claim 5.

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