Bushing assembly, powertrain mount, and vehicle

Abstract

A bushing assembly (12), a powertrain mount (100), and a vehicle. The bushing assembly (12) comprises: a first vibration damping body (121), which comprises an outer sleeve (1211), an inner sleeve (1212), and a first elastomer (1213), wherein the first elastomer (1213) is connected between the outer sleeve (1211) and the inner sleeve (1212), and an accommodating groove (1223) is formed on the side of the outer sleeve (1211) away from the first elastomer (1213) in an axial direction; and a second vibration damping body (122), which is arranged in the accommodating groove (1223) and is connected to the first vibration damping body (121), with a gap being formed between the second vibration damping body (122) and the outer sleeve (1211) in a radial direction. When the bushing assembly (12) is subjected to a relatively small radial external impact, the first vibration damping body (121) deforms to provide a buffering effect; and when the bushing assembly (12) is subjected to a relatively large radial external impact, the first vibration damping body (121) deforms and comes into contact with the second vibration damping body (122), which supports the first vibration damping body (121) to prevent the deformation thereof from increasing in extent, whereby under a condition that the first vibration damping body (121) has a relatively low stiffness, the durability is improved and the service life of the first vibration damping body (121) is prolonged.

Description

Bushing assembly, powertrain mount and vehicle TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a bushing assembly, a powertrain mount and a vehicle. BACKGROUND

[0002] A bushing is a supporting part used outside a mechanical part to achieve sealing, wear protection and the like, and refers to a ring sleeve that plays a cushioning role. In a powertrain mount, the stiffness of the bushing assembly needs to be as low as possible, especially in the radial direction. However, the lower the stiffness of the bushing assembly, the lower the fatigue resistance, which is prone to damage and affects the service life. It is difficult for the current bushing assembly to balance the stiffness and fatigue resistance. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a bushing assembly that can improve durability and prolong the service life of the first damping body when the stiffness of the first damping body is low.

[0004] The present application further proposes a powertrain mount.

[0005] The present application also proposes a vehicle.

[0006] According to the bushing assembly of the first aspect of the present application, the bushing assembly comprises a first damping body, the first damping body comprising an outer cylinder, an inner cylinder and a first elastic body, the first elastic body being connected between the outer cylinder and the inner cylinder, the outer cylinder being formed with a receiving groove on the side away from the first elastic body in the axial direction; and a second damping body, the second damping body being arranged in the receiving groove and being connected with the first damping body, and the second damping body and the outer cylinder being formed with a gap in the radial direction.

[0007] According to the bushing assembly of the present application, by arranging the first damping body and the second damping body, the second damping body is arranged in the first damping body, and a gap is left between the second damping body and the outer cylinder. When the bushing assembly is subjected to a relatively small radial external impact, the first damping body deforms to play a buffering role. When the bushing assembly is subjected to a relatively large radial external impact, the first damping body deforms and comes into contact with the second damping body, the second damping body supports the first damping body to prevent it from deforming in a larger range. Therefore, the bushing assembly can improve durability and prolong the service life of the first damping body when the stiffness of the first damping body is low.

[0008] According to some embodiments of the present application, at least part of the second damping body is sleeved on the inner cylinder.

[0009] According to some embodiments of the present application, the second damping body comprises a limiting sleeve and a second elastic body, the second elastic body is arranged on the outer periphery of the limiting sleeve, and at least part of the limiting sleeve is sleeved on the outside of the inner cylinder.

[0010] According to some embodiments of the present application, the second elastic body comprises a first segment and a second segment in the axial direction, the first segment abuts against the inner cylinder in the axial direction, and the radial dimension of the second segment is greater than that of the first segment.

[0011] According to some embodiments of the present application, one side of the inner cylinder facing the second elastic body is formed with a protrusion, one side of the second elastic body facing the inner cylinder is formed with a groove, and the groove and the protrusion are matched with each other; or, one side of the inner cylinder facing the second elastic body is formed with a sleeve rod, and the second elastic body and the limiting sleeve are sleeved on the sleeve rod.

[0012] According to the power assembly suspension of the second aspect of the embodiments of the present application, the power assembly suspension comprises two connecting assemblies for being connected to a vehicle frame respectively, and a damping assembly, the two connecting assemblies are connected to two ends of the damping assembly respectively, the damping assembly comprises a base, a first support and the bushing assembly, the bushing assembly is clamped between the base and the first support, and the base is used for being connected to the upper side of the power assembly.

[0013] According to some embodiments of the present application, the first mounting hole is arranged on the base, the second mounting hole is arranged on the first support, and at least one of the first mounting hole and the second mounting hole is an oblong hole extending in a first direction; the power assembly suspension further comprises a first fastener, the first fastener passes through the first damping body and the second damping body and is fixedly connected with the first mounting hole and the second mounting hole.

[0014] According to some embodiments of the present application, the connecting assembly comprises a second support and a third support, the second support is fixedly connected with the damping assembly, the second support is provided with a third mounting hole for being connected with the third support, the third support is provided with a fourth mounting hole for being connected with the vehicle frame, the third mounting hole is an oblong hole extending in a second direction, and the fourth mounting hole is an oblong hole extending in a third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0015] According to some embodiments of the present application, the power assembly suspension further comprises a sleeve assembly, the sleeve assembly comprises a sleeve, a third elastic body and a second fastener, the third elastic body and the sleeve are an integral structure, the second fastener passes through the first sleeve and is connected with the first support and the second support, and the third elastic body is clamped between the first support and the second support.

[0016] The sleeve assembly further includes a fourth elastic body, which is sleeved on the third elastic body and sandwiched between the second fastener and the first bracket.

[0017] According to a third aspect of the present invention, a vehicle includes the powertrain mount, the powertrain, and the frame, wherein two of the connecting components are respectively connected to the frame, and the base is connected to the upper side of the powertrain.

[0018] By setting a first damper and a second damper, with the second damper located inside the first damper and a gap between the second damper and the outer cylinder, when the bushing assembly is subjected to a small radial external impact, the first damper deforms to provide a buffering effect. When the bushing assembly is subjected to a large radial external impact, the first damper deforms and comes into contact with the second damper, which supports the first damper to prevent it from deforming further. This can improve durability and extend the service life of the first damper even when its stiffness is relatively low.

[0019] By setting the first, second, third, and fourth mounting holes to restrict the position of the powertrain mount in the XYZ directions, the powertrain mount is kept in a stress-free state under static load, thus improving NVH performance. The first and second damping elements are connected in series on the vibration transmission path to ensure the damping effect and reduce the system vibration frequency. Only one first damping element is set to avoid parallel connection of mounts and alleviate over-constraint.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of the powertrain mounting structure according to an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the powertrain mounting structure according to an embodiment of the present invention.

[0025] Figure 3 is a cross-sectional view of one embodiment of the bushing assembly according to an embodiment of the present invention;

[0026] Fig. 4 is a sectional view of another embodiment of the bushing assembly according to an embodiment of the present application;

[0027] Fig. 5 is a structural schematic diagram of the bushing assembly according to an embodiment of the present application;

[0028] Fig. 6 is a structural schematic diagram of the bushing assembly according to an embodiment of the present application;

[0029] Fig. 7 is a structural schematic diagram of the sleeve assembly according to an embodiment of the present application;

[0030] Fig. 8 is a sectional view of the sleeve assembly according to an embodiment of the present application;

[0031] Fig. 9 is a structural schematic diagram of the first bracket according to an embodiment of the present application;

[0032] Fig. 10 is a top view of the first bracket according to an embodiment of the present application;

[0033] Fig. 11 is a top view of the powertrain mount according to an embodiment of the present application;

[0034] Fig. 12 is a structural schematic diagram of the second bracket according to an embodiment of the present application;

[0035] Fig. 13 is a structural schematic diagram of the connecting assembly and the sleeve assembly according to an embodiment of the present application;

[0036] Fig. 14 is a structural schematic diagram of the third bracket according to an embodiment of the present application.

[0037] The reference signs are as follows: 100, powertrain mount; 10, damping assembly; 11, base; 12, bushing assembly; 121, first damping body; 1211, outer cylinder; 1212, inner cylinder; 1213, first elastic body; 122, second damping body; 1221, limiting sleeve; 1222, second elastic body; 1223, accommodating groove; 13, first bracket; 131, second mounting hole; 132, first reinforcing rib; 20, connecting assembly; 21, second bracket; 211, third mounting hole; 212, first plate body; 213, second plate body; 214, third plate body; 215, second reinforcing rib; 22, third bracket; 221, fourth mounting hole; 30, sleeve assembly; 31, sleeve; 32, third elastic body; 33, fourth elastic body; 41, first fastener; 42, second fastener; 43, third fastener. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and embodiments of the present application are described in detail below.

[0039] The bushing assembly 12 according to the embodiments of the present application is described below with reference to Figs. 1-14, further, the present application also proposes a power assembly suspension 100, and the present application also proposes a vehicle.

[0040] Referring to Figs. 3-6, the bushing assembly 12 according to the embodiments of the present application comprises a first damping body 121 and a second damping body 122.

[0041] The first damping body 121 comprises an outer cylinder 1211, an inner cylinder 1212 and a first elastic body 1213, the first elastic body 1213 is connected between the outer cylinder 1211 and the inner cylinder 1212, and the outer cylinder 1211 is formed with a receiving groove 1223 on the side away from the first elastic body 1213 in the axial direction. Wherein, the first elastic body 1213 is the main structure of the first damping body 121 to play a buffering damping role, and the first elastic body 1213 can be of rubber material to buffer external vibration. The outer cylinder 1211 and the inner cylinder 1212 can be of metal material, and the outer cylinder 1211, the inner cylinder 1212 and the first elastic body 1213 are vulcanized together to form a rubber sleeve, and when subjected to external impact, the first damping body 121 deforms to slow down the influence of external impact on other components.

[0042] The second damping body 122 is arranged in the receiving groove 1223 and connected with the first damping body 121, and the second damping body 122 forms a gap with the outer cylinder 1211 in the radial direction. In this way, when the bushing assembly 12 is subjected to external impact in the radial direction, the force is first transmitted to the first damping body 121, the first damping body 121 deforms in the radial direction, and the gap formed between the second damping body 122 and the outer cylinder 1211 in the radial direction provides a deformation space for the first damping body 121, ensuring that the first damping body 121 plays a buffering role.

[0043] It should be noted that the first elastic body 1213 in the first damping body 121 is prone to damage if the deformation range is too large, and the rubber vulcanization layer of the first elastic body 1213 is prone to cracking, affecting the service life. Therefore, the second damping body 122 is arranged in the receiving groove 1223 and connected with the first elastic body 121, and the second damping body 122 is used to support the first damping body 121, and the second damping body 122 can be made of metal material and is not prone to deformation. When the first damping body 121 is compressed to contact the second damping body 122, that is, the deformation range of the first damping body 121 is the same as the gap between the second damping body 122 and the outer cylinder 1211, the second damping body 122 supports the first damping body 121 to prevent the first damping body 121 from deforming in a larger range, thereby prolonging the service life of the first damping body 121.

[0044] The gap between the second damping body 122 and the outer cylinder 1211 can be obtained according to test results and calculation, so that the gap is within the normal deformation range of the first damping body 121, the first elastic body 1213 is prevented from having excessive tensile displacement, cracking of the rubber vulcanization layer is avoided, and the durability is improved, thereby prolonging the service life of the first damping body 121.

[0045] In addition, by supporting the first damping body 121 by the second damping body 122, the first damping body 121 is designed to be lower in rigidity without reducing the fatigue resistance of the first damping body 121, so that the rigidity of the first damping body 121 can be designed to be infinitely low in theory, and the system frequency is reduced.

[0046] Therefore, by arranging the first damping body 121 and the second damping body 122, the second damping body 122 is arranged in the first damping body 121, a gap is left between the second damping body 122 and the outer cylinder 1211, when the bushing assembly 12 is subjected to a small radial external impact, the first damping body 121 deforms to play a buffering role, when the bushing assembly 12 is subjected to a large radial external impact, the first damping body 121 deforms and contacts the second damping body 122, the second damping body 122 supports the first damping body 121 to prevent it from deforming in a larger range, the fatigue resistance of the first elastic body 1213 can be ensured, the durability is improved, and the service life of the first damping body 121 is prolonged even if the rigidity of the first damping body 121 is low.

[0047] Referring to FIGS. 3, 5-6, at least part of the second damping body 122 is sleeved on the inner cylinder 1212, and the second damping body 122 comprises a limiting sleeve 1221 and a second elastic body 1222, the second elastic body 1222 is arranged on the outer periphery of the limiting sleeve 1221, and at least part of the limiting sleeve 1221 is sleeved on the outer side of the inner cylinder 1212.

[0048] The limiting sleeve 1221 can be made of metal to provide good support for the first damping body 121. The second elastic body 1222 can be made of rubber, and the second elastic body 1222 is arranged on the outer periphery of the limiting sleeve 1211, so that the limiting sleeve 1221 is not directly in contact with the first damping body 121, the first damping body 121 is in contact with the second elastic body 1222, and the impact on the limiting sleeve 1221 is reduced.

[0049] Specifically, the limiting sleeve 1221 and the second elastic body 1222 can be connected in one body by vulcanization, in some embodiments, the limiting sleeve 1221 is sleeved on the outer side of the inner cylinder 1211 to be connected with the inner cylinder 1212, and in some embodiments, the limiting sleeve 1221 abuts against the inner cylinder 1212, further realizing the mutual combination of the first damping body 121 and the second damping body 122.

[0050] Referring to FIGS. 3-4, the second elastic body 1222 includes a first section and a second section in the axial direction, the first section abuts against the inner cylinder 1212 in the axial direction, and the second section is connected to the first section and has a radial dimension greater than that of the first section. That is, the second elastic body 1222 is formed to have a stepped structure, the second section has a greater radial dimension than the first section, on the one hand, the use amount of material can be reduced, the second section is arranged at the main position where the second damping body 122 contacts the first damping body 121, and the remaining positions use less material, which can reduce the production cost, on the other hand, the first damping body 121 will also be impacted in other directions and deformed, and the stepped structure also leaves a deformation space in other directions of the first damping body 121.

[0051] Referring to FIG. 4, the inner cylinder 1212 is formed with a protrusion on the side facing the second elastic body 1222, and the second elastic body 1222 is formed with a groove on the side facing the inner cylinder 1212, the groove and the protrusion cooperate with each other, or the inner cylinder 1212 is formed with a sleeve rod on the side facing the second elastic body 1222, and the second elastic body 1222 and the limiting sleeve 1221 are sleeved on the sleeve rod. That is, in some embodiments, the second elastic body 1222 abuts against the inner cylinder 1212, the inner cylinder 1212 is formed with a protrusion, the second elastic body 1222 is formed with a groove, and the two cooperate with each other through the groove and the protrusion, and in some embodiments, the inner cylinder 1212 is formed with a sleeve rod on the side facing the second elastic body 1222, and the second elastic body 1222 and the limiting sleeve 1221 are sleeved on the outer periphery of the sleeve rod.

[0052] Referring to FIGS. 1-14, the power assembly suspension 100 according to the second aspect of the embodiment of the application includes two connecting assemblies 20 and a damping assembly 10.

[0053] The two connecting assemblies 20 are used to be connected to the frame respectively, and the two connecting assemblies 20 are connected at two ends of the damping assembly 10 respectively, the damping assembly 10 includes a base 11, a first support 13, and a bushing assembly 12, the bushing assembly 12 is clamped between the base 11 and the first support 13, and the base 11 is used to be connected to the upper side of the power assembly.

[0054] Specifically, the damping assembly 10 can be fixedly connected with the transmission, and plays a role of buffering the vibration of the transmission, the base 11 is arranged below the bushing assembly 12 and the first support 13, the base 11 is used to support the first support 13 and is connected to the upper side of the power assembly, and the bushing assembly 12 is clamped between the first support 13 and the base 11, and can play a role of buffering the vibration.

[0055] Two connecting assemblies 20 are respectively connected at two ends of the damping assembly 10, the damping assembly 10 comprises a base 11, a bushing assembly 12 and a first support 13, the base 11 is provided with a first mounting hole, the first support 13 is provided with a second mounting hole 131, and the bushing assembly 12 is clamped between the base 11 and the first support 13.

[0056] When the suspension is arranged in two points, the first elastic body 1213 of the bushing assembly 12 needs to be designed as a “I” type elastic body in the Y direction, but the “I” type elastic body will form a shear stiffness in the Rx direction, which is not conducive to the overall vehicle NVH performance. Since the stiffness of the first elastic body 1213 in the embodiment can be designed to be relatively low, the first elastic body 1213 no longer needs to be used as a hard limit, and only one bushing assembly 12 is designed in the Z direction, which prevents the bushing assembly 12 from being connected in parallel, can alleviate the over-constrained situation, can reduce the stiffness of the powertrain suspension 100, alleviate the over-constrained situation, and other directions can no longer be filled with elastic material, further reducing the stiffness of the powertrain suspension 100, reducing the system frequency, and reducing the impact on the NVH performance.

[0057] In addition, the first damping body 121 and the second damping body 122 adopt a combined bushing process, and the bushing assembly 12 is provided as two structures of the first damping body 121 and the second damping body 122, which can avoid process implementation difficulties, and can realize different shapes of the first elastic body 1213, the second elastic body 1222 and the limiting sleeve 1221 according to actual needs.

[0058] The Z direction is the radial direction of the bushing assembly 12. The limiting sleeve 1221 can play a Z direction limiting role on the bushing assembly 12. When the bushing assembly 12 is assembled with the first mounting hole and the second mounting hole 131, the first damping body 121 and the second damping body 122 can buffer the vibration generated during the operation of the transmission, avoid the vibration gradually transmitted to the vehicle frame through the first support 13, and improve the driving experience of the vehicle.

[0059] Referring to FIGS. 1-2 and 9, the base 11 is provided with a first mounting hole, and the first support 13 is provided with a second mounting hole 131, at least one of the first mounting hole and the second mounting hole 131 is an oblong hole extending in the first direction; wherein the first mounting hole can be an oblong hole extending in the first direction, and the bushing assembly 12 is assembled into the first mounting hole of the base 11 to form an auxiliary suspension, which can buffer the vibration from the transmission. Alternatively, in some embodiments, the second mounting hole 131 of the first support 13 can be an oblong hole extending in the first direction, and the bushing assembly 12 can be assembled into the second mounting hole 131 of the first support 13 to form an auxiliary suspension to buffer the vibration from the transmission.

[0060] Referring to FIGS. 1-2 and 9, the powertrain suspension 100 further comprises a first fastener 41 fixedly connected through the first damping body 121 and the second damping body 122 and the first mounting hole and the second mounting hole 131. After the first fastener 41 is fixedly connected through the first damping body 121 and the second damping body 122 and the first mounting hole and the second mounting hole 131, the first fastener 41 is further fixed through the transmission to fix the auxiliary suspension with the transmission, and the first damping body 121 and the second damping body 122 can buffer the vibration generated by the operation of the transmission, so as to avoid the vibration gradually transmitted to the vehicle frame through the first support 13, and improve the driving experience of the vehicle.

[0061] In this embodiment, the first fastener 41 can be a bolt.

[0062] Referring to FIGS. 1-4, the connecting assembly 20 comprises a second support 21 and a third support 22, the second support 21 is fixedly connected with the damping assembly 10, the second support 21 is provided with a third mounting hole 211 for connecting with the third support 22, the third support 22 is provided with a fourth mounting hole 221 for connecting with the vehicle frame, the third mounting hole 211 is an oblong hole extending in the second direction, and the fourth mounting hole 221 is an oblong hole extending in the third direction. Specifically, two connecting assemblies 20 are connected at two ends of the damping assembly 10, for fixing the damping assembly 10 and the transmission connected with the damping assembly 10 on the vehicle frame, the second support 21 and the third support 22 are respectively provided with the third mounting hole 211 and the fourth mounting hole 221, the first support 13 is provided with a fifth mounting hole corresponding to the third mounting hole 211, the first support 13 is connected with the second support 21 through the third mounting hole 211 and the fifth mounting hole, the third support 22 is connected with the vehicle frame through the fourth mounting hole 221, and the third support 22 is further provided with a sixth mounting hole, the second support 21 is provided with a seventh mounting hole corresponding to the sixth mounting hole, and the second support 21 and the third support 22 can be connected through the sixth mounting hole and the seventh mounting hole, so that the transmission, the first support 13, the second support 21, the third support 22 and the vehicle frame can be fixed together.

[0063] In this embodiment, the first mounting hole and the second mounting hole 131 extend in the X direction, so that the Z-direction limiting of the powertrain after falling can be realized, the third mounting hole 211 and the fourth mounting hole 221 can selectively realize the X-direction and Y-direction limiting, respectively, the tolerance hole is provided in three directions for limiting, so that the powertrain suspension 100 is in the stress-free state during static loading, and the NVH performance is improved. Moreover, only one bushing assembly 12 is designed in the Z direction, so as to prevent the bushing assembly 12 from being connected in parallel, the suspension stiffness can be reduced, and the over-constraint condition can be relieved.

[0064] The first direction, the second direction and the third direction are perpendicular to each other. Referring to FIG. 1, the first direction can be an X direction perpendicular to a YZ plane, the second direction can be a Z direction, and the third direction can be a Y direction.

[0065] Referring to FIGS. 7-8, the powertrain mount 100 further includes a sleeve assembly 30, the sleeve assembly 30 including a sleeve 31, a third elastic body 32 and a second fastener 42, the third elastic body 32 and the sleeve 31 being an integral structure, the second fastener 42 passing through the first sleeve and being connected with the first support 13 and the second support 21, and the third elastic body 32 being clamped between the first support 13 and the second support 21. The third elastic body 32 can buffer the vibration transmitted by the first support 13 to the second support 21, further preventing the vibration of the transmission from being transmitted to the frame. Specifically, the sleeve 31 can be divided into the sleeve 31 and a baffle, the baffle and the third elastic body 32 being vulcanized to form an integral structure, and the sleeve 31 being assembled with the vulcanized baffle and third elastic body 32, so as to avoid the sleeve 31 and the third elastic body 32 being vulcanized together and generating stress when being compressed, thereby causing early damage.

[0066] The sleeve assembly 30 can also be removed or other connection forms can be adopted according to needs, for example, when the frame has sufficient rigidity, the sleeve assembly 30 can be omitted.

[0067] The bushing assembly 12 and the sleeve assembly 30 are in series in the transmission vibration transmission path, and can better buffer the vibration, so that the stiffness of the first elastic body 1213 and the second elastic body 1222 in the bushing assembly 12 can be further reduced, and the problem of damage of the damping assembly 10 caused by deformation of the frame when the rigidity of the frame is weak can be solved.

[0068] Further, referring to FIG. 11, the powertrain mount 100 further includes a second fastener 42, the second fastener 42 passing through the sleeve 31 and being connected with the first support 13 and the second support 21, and the sleeve 31 and the first support 13 and the second support 21 being fixedly connected through the second fastener 42, so as to improve the stability of the powertrain mount 100. The second fastener 42 can be a bolt.

[0069] And, the sleeve assembly 30 further comprises a fourth elastic body 33, the fourth elastic body 33 is sleeved on the third elastic body 32, and the fourth elastic body 33 is clamped between the second fastener 42 and the first support 13. After the sleeve 31 is assembled with the vulcanized baffle and the third elastic body 32, the fourth elastic body 33 is sleeved on the sleeve 31, wherein the third elastic body 32 is used for buffering the vibration transmitted by the first support 13 to the second support 21, and the fourth elastic body 33 is located between the end of the second fastener 42 and the upper end of the first support 13, so that the stability of the connection of the second fastener 42 with the first support 13 and the second support 21 is improved, the vibration frequency of the system in the Z direction is further improved, and the damping effect is improved.

[0070] The sleeve assembly 30 is at least two, and the at least two sleeve assemblies 30 are arranged at intervals in the third direction. In the embodiment, the sleeve assembly 30 is two, and the two sleeve assemblies 30 are arranged at intervals in the Y direction. The damping effect of the two sleeve assemblies 30 is better, the system vibration frequency can be reduced, and it can be ensured that the sleeve assembly 12 can also have a better damping effect when the sleeve assembly 12 is reduced to one, thereby avoiding greater stiffness of the sleeve assembly 12 in parallel.

[0071] And, referring to FIG. 1, the power assembly suspension 100 further comprises a third fastener 43 for fixedly connecting the second support 21 and the third support 22. The third fastener 43 can also be a bolt, which is used to assemble the second support 21 and the third support 22, thereby improving the assembly process and improving the assembly efficiency.

[0072] The first support 13 is provided with at least one first reinforcing rib 132 at both ends, and the first reinforcing rib 132 is clamped between adjacent two sleeve assemblies 30. Specifically, the first support 13 is provided with one first reinforcing rib 132 at both ends, and the first reinforcing rib 132 is clamped between adjacent two sleeve assemblies 30, thereby further improving the strength of the first support 13.

[0073] Referring to FIG. 12, the second support 21 comprises a first plate body 212, a second plate body 213 and a third plate body 214. The second plate body 213 is fixedly connected with the first support 13, the third plate body 214 is fixedly connected with the third support 22, and the first plate body 212 is connected between the second plate body 213 and the third plate body 214 and is arranged obliquely relative to the second direction. The first plate body 212 is provided with a second reinforcing rib 215, and the first plate body 212, the second plate body 213 and the third plate body 214 are arranged in a bent manner, so that the strength of the second support 21 is improved, and the strength of the first support 13 is further improved by arranging the second reinforcing rib 215.

[0074] Therefore, the assembly steps of the power assembly suspension 100 are as follows: firstly, the first damping body 121 is assembled into the base 11, the base 11, the first damping body 121 and the first support 13 are fixed together with the transmission through the first fastener 41, the third support 22 is fixed to the frame through the fourth fastener, the second support 21 is pre-fixed to the third support 22 through the third fastener 43, the second damping body 122, the first support 13 and the second support 21 are pre-fixed through the second fastener 42, the second fastener 42 and the third fastener 43 are tightened, and finally, the first fastener 41 is assembled and tightened.

[0075] Through the arrangement form of the power assembly suspension 100, according to the torque shaft determination theory, the torque shaft always passes through the power assembly centroid and is downwardly at a certain angle with the crankshaft center line, the D point or the E point of the engine is arranged at the last side of the power assembly, close to the lower surface of the transmission or the motor, the suspension elastic center of the embodiment is just attached above the transmission, finally falls on the torque shaft, and the purpose of system decoupling can be achieved.

[0076] According to the vehicle of the third aspect of the present application, the power assembly suspension 100 and the power assembly and the frame are included, and the two connecting assemblies 20 are connected to the frame respectively, and the base 11 is connected to the upper side of the power assembly.

[0077] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0078] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0079] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bushing assembly, characterized in that, include: The first damping body (121) includes an outer cylinder (1211), an inner cylinder (1212), and a first elastic body (1213). The first elastic body (1213) is connected between the outer cylinder (1211) and the inner cylinder (1212). The outer cylinder (1211) has a receiving groove (1223) formed on the side away from the first elastic body (1213) in the axial direction. The second damper (122) is disposed in the receiving groove (1223) and is connected to the first damper (121). The second damper (122) and the outer cylinder (1211) form a gap in the radial direction.

2. The bushing assembly according to claim 1, characterized in that, At least a portion of the second damper (122) is fitted onto the inner cylinder (1212).

3. The bushing assembly according to claim 2, characterized in that, The second damping body (122) includes a limiting sleeve (1221) and a second elastic body (1222), the second elastic body (1222) being disposed on the outer periphery of the limiting sleeve (1221), and at least a portion of the limiting sleeve (1221) being sleeved on the outer side of the inner cylinder (1212).

4. The bushing assembly according to claim 3, characterized in that, The second elastomer (1222) includes a first segment and a second segment along the axial direction. The first segment abuts against the inner cylinder (1212) along the axial direction. The second segment is connected to the first segment and the radial dimension of the second segment is greater than that of the first segment.

5. The bushing assembly according to claim 3, characterized in that, The inner cylinder (1212) has a protrusion on the side facing the second elastic body (1222), and the second elastic body (1222) has a groove on the side facing the inner cylinder (1212), the groove and the protrusion cooperating with each other; or, The inner cylinder (1212) has a sleeve rod formed on the side facing the second elastic body (1222), and the second elastic body (1222) and the limiting sleeve (1221) are sleeved on the sleeve rod.

6. A powertrain mounting, characterized in that, include: Two connecting components (20) are used to connect to the frame respectively; A vibration damping assembly (10) is provided, wherein two connecting assemblies (20) are respectively connected to both ends of the vibration damping assembly (10). The vibration damping assembly (10) includes: a base (11), a first bracket (13), and a bushing assembly (12) according to any one of claims 1-5. The bushing assembly (12) is sandwiched between the base (11) and the first bracket (13). The base (11) is used to connect to the upper side of the powertrain.

7. The powertrain mount according to claim 6, characterized in that, The base (11) is provided with a first mounting hole, and the first bracket (13) is provided with a second mounting hole (131). At least one of the first mounting hole and the second mounting hole (131) is an elongated hole extending in a first direction. The powertrain mount further includes a first fastener (41) that passes through the first damper (121) and the second damper (122) and is fixedly connected to the first mounting hole and the second mounting hole (131).

8. The powertrain mount according to claim 6, characterized in that, The connecting assembly (20) includes a second bracket (21) and a third bracket (22). The second bracket (21) is fixedly connected to the vibration damping assembly (10). The second bracket (21) is provided with a third mounting hole (211) for connecting to the third bracket (22). The third bracket (22) is provided with a fourth mounting hole (221) for connecting to the vehicle frame. The third mounting hole (211) is an elongated hole extending in a second direction, and the fourth mounting hole (221) is an elongated hole extending in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

9. The powertrain mount according to claim 8, characterized in that, Also includes: Sleeve assembly (30), The sleeve assembly (30) includes: a sleeve (31), a third elastic body (32), and a second fastener (42). The third elastic body (32) and the sleeve (31) are integrally formed. The second fastener (42) passes through the first sleeve (31) and is connected to the first bracket (13) and the second bracket (21). The third elastic body (32) is sandwiched between the first bracket (13) and the second bracket (21). The sleeve assembly (30) further includes a fourth elastic body (33), which is sleeved on the third elastic body (32) and sandwiched between the second fastener (42) and the first bracket (13).

10. A vehicle, characterized in that, include: The powertrain mount, powertrain, and chassis as described in any one of claims 6-9, wherein, The two connecting components (20) are respectively connected to the frame, and the base (11) is connected to the upper side of the powertrain.

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