CN219082077U

CN219082077U - Bushing, chassis and car

Info

Publication number: CN219082077U
Application number: CN202223541704.9U
Authority: CN
Inventors: 沈浩杰; 李洁辰
Original assignee: Shanghai Rox Intelligent Technology Co Ltd
Current assignee: Shanghai Rox Intelligent Technology Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-26
Anticipated expiration: 2032-12-29

Abstract

The application relates to a bushing, chassis and car. The bushing comprises an outer tube part, an inner tube part and a filling part, wherein the outer tube part comprises a body part and a concave part arranged on the body part, the body part comprises a first surface and a second surface which are opposite to each other along the axial direction perpendicular to the body part, the first surface is arranged away from the axial line of the body part, the second surface is arranged close to the axial line of the body part, and the concave part is sunken towards the direction close to the axial line of the body part relative to the first surface; the inner pipe part is arranged in the outer pipe part; the filling portion is connected to the second surface and is located between the inner tube portion and the outer tube portion. Be provided with the concave part on the body portion of bush of this application, can improve the rigidity and the intensity of bush at concave part position all around, strengthen the regional ability of resisting deformation of bush, when the bush assembly is gone into in the sleeve pipe, reduce the bush by the probability of sand leakage hole scratch of sub vehicle frame, and then improve sub vehicle frame and bush's assembly qualification rate.

Description

Bushing, chassis and car

Technical Field

The application relates to the technical field of automobiles, in particular to a bushing, a chassis and an automobile.

Background

In the automotive field, sub-frames are used as part of the chassis of a motor vehicle for connecting the suspension of the motor vehicle to the body of the motor vehicle. The bushing is generally arranged on the auxiliary frame so as to realize the flexible connection between the auxiliary frame and the automobile body, and the flexible connection can absorb part of dynamic load, reduce the transmission of Vibration to the automobile body and improve the NVH (Noise, vibration, harshness and sound Vibration Harshness) characteristic of the automobile.

In the related art, the bushing and the sleeve are usually in interference fit, and for a cast subframe, when the bushing adopting the plastic outer tube is pressed into the sleeve, the bushing is very easy to scratch by sand leakage holes of the subframe, so that the bushing is wrinkled and cracked, thereby causing the bushing to fail and reducing the assembly qualification rate of the subframe and the bushing.

Therefore, it is currently desirable to provide a bushing to improve the local strength and rigidity of the bushing, reduce the probability of damage to the bushing during installation, and improve the assembly yield of the subframe and the bushing.

Disclosure of Invention

The application provides a bush, chassis and car, aims at improving the local intensity and the rigidity of bush, reduces the damage probability of bush in the installation.

In a first aspect, the present application proposes a bushing comprising an outer tube portion, an inner tube portion and a filling portion, the outer tube portion comprising a body portion and a recess provided in the body portion, the body portion comprising a first surface and a second surface opposite to each other along an axis perpendicular to itself, the first surface being provided away from the axis of the body portion, the second surface being provided close to the axis of the body portion, the recess being recessed with respect to the first surface towards a direction close to the axis of the body portion; the inner pipe part is arranged in the outer pipe part; the filling portion is connected to the second surface and is located between the inner tube portion and the outer tube portion.

In some embodiments, the body portion includes a first end and a second end axially opposite each other along the body portion, and the outer tube portion further includes a plurality of protrusions connected to a side of the first end facing away from the second end, the plurality of protrusions being spaced apart along a circumference of the body portion.

In some embodiments, the outer tube portion further comprises an extension connected to the second end and protruding relative to the first surface in a direction away from the axis of the body portion.

In some embodiments, the recess is located between and disposed proximate the first end and the second end.

In some embodiments, the recess is provided in a plurality, the plurality of recesses being arranged at intervals along the axial direction of the body portion.

In some embodiments, the recess is provided in a plurality, the plurality of recesses being arranged at intervals along the circumferential direction of the body portion.

In some embodiments, at least a portion of the inner wall surface of the recess is curved.

In some embodiments, the inner wall surface of the recess is formed by intersecting a plurality of planes with each other.

In a second aspect, the present application further proposes a chassis comprising a subframe and a bushing according to any of the embodiments of the first aspect of the present application, the subframe comprising a subframe body and a sleeve arranged in the subframe body, the bushing being arranged in the sleeve.

In some embodiments, the subframe has a sand drain hole extending through the subframe body and the sleeve, the recess being disposed facing the sand drain hole.

In a third aspect, the present application also proposes an automobile comprising a chassis as in any of the embodiments of the second aspect of the present application and a body, the body being connected to the chassis.

According to the bushing, the bushing comprises an outer pipe part, an inner pipe part and a filling part, wherein the outer pipe part comprises a body part and a concave part arranged on the body part, the body part comprises a first surface and a second surface which are opposite to each other along the axial direction perpendicular to the body part, the first surface is arranged away from the axis of the body part, the second surface is arranged close to the axis of the body part, and the concave part is recessed towards the direction close to the axis of the body part relative to the first surface; the inner pipe part is arranged in the outer pipe part; the filling portion is connected to the second surface and is located between the inner tube portion and the outer tube portion. Therefore, the concave part is arranged on the body part of the bushing, the rigidity and the strength of the bushing at the periphery of the concave part can be improved, the deformation resistance of the local area of the bushing is enhanced, the probability that the bushing is scratched by a sand leakage hole of the auxiliary frame is reduced when the bushing is assembled into the sleeve, and the assembly qualification rate of the auxiliary frame and the bushing is further improved.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a subframe according to some embodiments of the present disclosure;

FIG. 2 is an enlarged view of a portion of the subframe shown in FIG. 1 at A;

FIG. 3 is a schematic illustration of a bushing provided in some embodiments of the present application;

fig. 4 is another structural schematic diagram of a bushing provided in some embodiments of the present application.

The figures are not necessarily to scale.

Reference numerals illustrate:

x, axial direction;

1. a bushing;

10. an outer tube portion; 11. a body portion; 111. a first surface; 112. a second surface; 113. a first end; 114. a second end; 12. a concave portion; 13. a convex portion; 14. an extension;

20. an inner tube portion; 30. a filling part;

100. an auxiliary frame; 110. a sleeve; 120. an auxiliary frame body; 130. sand leakage holes.

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the present application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The auxiliary frame is specially matched with a high-end vehicle in the past, mostly has a steel structure or an aluminum structure, and is gradually applied to various high-end and low-end vehicle types as a part of an automobile chassis system along with popularization of technology at present. The auxiliary frame can block a part of Vibration and Noise, and reduce the transmission of the Vibration and Noise to the automobile body, so that the NVH (Noise, vibration, harshness and sound Vibration roughness) characteristic of the automobile can be improved. The auxiliary frame and the vehicle body are commonly in soft connection through a bushing, specifically, the bushing is in interference fit with a sleeve of the auxiliary frame, and the bushing is fixedly connected with the vehicle body through a third connecting piece (for example, by adopting bolt fixed connection), so that the transmission of vibration and noise between the auxiliary frame and the vehicle body can be slowed down due to the fact that the bushing has a certain buffering and energy absorbing effect.

The auxiliary frame is generally large in size, the longitudinal beam has a bending radian, and concave-convex structures such as reinforcing ribs and mounting holes are also distributed in the auxiliary frame, so that the auxiliary frame is generally formed by low-pressure casting. The inventor finds that when the auxiliary frame formed by casting is assembled with the lining, sand leakage holes on the auxiliary frame are often scratched with the outer wall of the lining, particularly the lining adopting the plastic outer tube is extremely easy to wrinkle, crack and the like, so that the lining is invalid, and the assembly qualification rate of the auxiliary frame and the lining is low.

In order to solve the above-mentioned technical problems, the inventors have made intensive studies and have proposed a bushing including an outer tube portion including a body portion including a first surface and a second surface opposite to each other in an axial direction perpendicular to themselves, the first surface being disposed away from an axis of the body portion, the second surface being disposed close to the axis of the body portion, and a filling portion, the outer tube portion including a body portion and a recess portion provided to the body portion, the recess portion being recessed with respect to the first surface toward a direction close to the axis of the body portion; the inner pipe part is arranged in the outer pipe part; the filling portion is connected to the second surface and is located between the inner tube portion and the outer tube portion. Therefore, the concave part is arranged on the body part of the bushing, the rigidity and the strength of the bushing at the periphery of the concave part can be improved, the deformation resistance of the local area of the bushing is enhanced, the probability that the bushing is scratched by a sand leakage hole of the auxiliary frame is reduced when the bushing is assembled into the sleeve, and the assembly qualification rate of the auxiliary frame and the bushing is further improved.

Some embodiments of the present application are described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a subframe according to some embodiments of the present disclosure; fig. 2 is an enlarged view of a portion of the subframe shown in fig. 1 at a.

As shown in fig. 1 and 2, the subframe 100 may be either a front subframe or a rear subframe, which is not limited in this application. The subframe 100 may include a subframe body 120 and bushings 110 provided to the subframe body 120, and illustratively, in fig. 1, the bushings 110 may be provided in four. The sleeve 110 and the subframe body 120 may have various connection manners, for example, the sleeve 110 and the subframe body 120 may be welded or integrally connected, that is, the sleeve 110 and the subframe body 120 are integrally formed, that is, the subframe 100 may be an integrally formed structure.

The subframe 100 includes a sand drain hole 130, and the sand drain hole 130 may penetrate through both the subframe body 120 and the sleeve 110. The bushing is sleeved in the sleeve 110 and is in interference fit with the sleeve 110.

FIG. 3 is a schematic illustration of a bushing provided in some embodiments of the present application; fig. 4 is another structural schematic diagram of a bushing provided in some embodiments of the present application.

As shown in fig. 1 to 4, the liner 1 includes an outer tube portion 10, an inner tube portion 20, and a filling portion 30, the outer tube portion 10 includes a body portion 11 and a recess 12 provided to the body portion 11, the body portion 11 includes a first surface 111 and a second surface 112 opposed to each other in a direction perpendicular to its own axial direction X, the first surface 111 is provided away from the axis of the body portion 11, the second surface 112 is provided near the axis of the body portion 11, and the recess 12 is recessed with respect to the first surface 111 toward a direction near the axis of the body portion 11; the inner tube portion 20 is disposed within the outer tube portion 10; the filler portion 30 is connected to the second surface 112 and is located between the inner tube portion 20 and the outer tube portion 10.

The outer tube portion 10 is an outer contour structure of the bush 1, which may have various shapes such as a circular tubular structure or an elliptical tubular structure, etc. The outer tube portion 10 may be made of various materials, such as a metal material, a plastic material, or an engineering plastic material blended with glass fibers, for example, in the embodiment of the present application, the outer tube portion 10 may be made of a plastic material, so that the bushing 1 may have a certain elastic deformation amount during assembly, so as to reduce the assembly difficulty.

The outer tube portion 10 includes a main body portion 11 and a recess 12 provided in the main body portion 11, and the main body portion 11 is a main body structure of the outer tube portion 10. The body portion 11 includes a first surface 111 and a second surface 112 opposed to each other in a direction perpendicular to its own axial direction X, the first surface 111 being understood as an outer surface of the body portion 11, and the second surface 112 being understood as an inner surface of the body portion 11. The first surface 111 is arranged away from the axis of the body portion 11 and the second surface 112 is arranged close to the axis of the body portion 11, which in this application is also the centre line of the body portion 11, which is parallel to the axial direction X of the body portion 11. In this application, the main body 11, the inner tube 20, and the filling portion 30 may have the same axis.

The recess 12 is recessed in a direction approaching the axis of the body 11 with respect to the first surface 111, and the recess 12 has a certain recess depth, and may have a groove structure or a hole structure, that is, the recess 12 may penetrate the body 11 or be provided on the surface of the body 11, which is not limited in this application.

The inner tube portion 20 is disposed within the outer tube portion 10, and the inner tube portion 20 may have various structural forms, such as a circular tubular structure or an elliptical tubular structure. The inner tube 20 is used as a framework of the bushing 1, and may be made of metal, such as aluminum alloy or steel, so as to effectively enhance the structural strength of the bushing 1. In the case where the bush 1 is used in an automobile, the central through hole of the inner tube portion 20 may be fitted with a third connecting member such as a bolt, a screw, or the like, by which the bush 1 is fixed to the body of the automobile.

The filling portion 30 is connected to the second surface 112 and is located between the inner tube portion 20 and the outer tube portion 10, and the filling portion 30 has a certain buffering and energy absorbing effect, and may be made of various materials, such as rubber, silica gel, and the like. When the bushing 1 is used in a vehicle, the outer pipe portion 10 and the inner pipe portion 20 press the filling portion 30 due to the force, and the filling portion 30 may deform to absorb part of the force, so as to slow down the transmission of the force, thereby reducing noise and slowing down the transmission of vibration, and further improving the NVH characteristics of the vehicle.

According to the bushing 1 disclosed by the embodiment of the application, the concave part 12 is arranged on the body part 11 of the bushing 1, so that the rigidity and the strength of the bushing 1 at the surrounding part of the concave part 12 can be improved, the deformation resistance of a local area of the bushing 1 is enhanced, when the bushing 1 is assembled into the sleeve 110, the probability that the bushing 1 is scratched by the sand leakage hole 130 of the subframe 100 is reduced, and the assembly qualification rate of the subframe 100 and the bushing 1 is further improved.

As shown in fig. 1-4, in some embodiments, the body portion 11 includes a first end 113 and a second end 114 opposite each other along its own axial direction X. The first end 113 and the second end 114 are the ends of the body 11, where the first end 113 may be understood as the head end of the body 11, the second end 114 may be understood as the tail end of the body 11, and when the bushing 1 is assembled into the sleeve 110, the assembly is started by the head end of the bushing 1, that is, the first end 113 is first assembled into the sleeve 110, and after the assembly is completed, the second end 114 may be partially located inside the sleeve 110 or may be located outside the sleeve 110.

In some examples, the recess 12 is located between the first end 113 and the second end 114 and is disposed proximate to the first end 113.

Since the first end 113 is assembled in advance when the bushing 1 is assembled, the first end 113 is deformed first and is scratched with the sand leakage hole 130 of the sleeve 110 first, so that the concave portion 12 is arranged at a position close to the first end 113, the rigidity and strength of the surrounding part of the first end 113 can be effectively enhanced, the probability of scratching the first end 113 is reduced, the safety of the bushing 1 is improved, and the assembly qualification rate of the subframe 100 and the bushing 1 is improved.

In some examples, the outer tube portion 10 further includes a plurality of protrusions 13, the plurality of protrusions 13 being connected to a side of the first end 113 facing away from the second end 114, the plurality of protrusions 13 being spaced apart along the circumferential direction of the body portion 11.

The number of the convex portions 13 is plural, and two or more may be provided, and for example, in fig. 3 and 4, four convex portions 13 may be provided. The plurality of protruding portions 13 may be uniformly or non-uniformly spaced along the circumferential direction of the body portion 11, and the present application is not limited thereto.

The provision of the plurality of convex portions 13 can enhance the structural strength of the outer tube portion 10 of the bush 1, particularly the first end 113, can reduce the probability of the bush 1 being scratched by the outer tube portion 10 when being assembled, and can reduce the probability of the bush 1 being damaged by stress when working to a certain extent, thereby improving the safety and the working reliability of the bush 1.

As shown in fig. 1-4, in some embodiments, the outer tube portion 10 further includes an extension 14, the extension 14 being connected to the second end 114 and protruding relative to the first surface 111 in a direction away from the axis of the body portion 11.

The extension 14 may have various structures, and may be a single structure or an aggregate formed by combining a plurality of independent structures. The extension portion 14 protrudes with respect to the first surface 111 in a direction away from the axis of the body portion 11, that is, the extension portion 14 may have an annular structure and is sleeved on the first surface 111. The extension 14 also has a certain thickness along the axial direction X of the body 11 so that the extension 14 has sufficient structural strength to reduce the probability of damaging the extension 14 due to excessive assembly force when the bushing 1 is assembled.

By providing the extension portion 14, the outer tube portion 10 of the bush 1 can be made to form a positioning structure, so that the fitting position and the fitting effect of the bush 1 can be confirmed at the time of fitting the bush 1, and the convenience of the fitting operation can be improved.

As shown in fig. 1-4, in some embodiments, the recess 12 may be provided in plurality, and the plurality of recesses 12 may be provided at intervals from one another.

The provision of the plurality of concave portions 12 can further enhance the rigidity and strength of the outer tube portion 10, thereby further reducing the probability of the bush 1 being scratched by the sand leakage hole 130 of the subframe 100, and further enhancing the assembly yield of the subframe 100 and the bush 1. And the plurality of recesses 12 are provided at intervals from each other, the problem of the outer tube portion 10 lacking in effective contact with the sleeve 110 due to the concentrated arrangement of the recesses 12 can be alleviated to some extent, thereby enhancing the connection strength and connection stability of the bush 1 and the sleeve 110.

The plurality of concave portions 12 may be arranged at intervals in various manners.

In some examples, the plurality of recesses 12 are spaced apart along the axial direction X of the body portion 11, such as shown in fig. 4;

in other examples, the plurality of concave portions 12 are arranged at intervals along the circumferential direction of the body portion 11;

in still other examples, the plurality of recesses 12 are arranged at intervals in the axial direction X and the circumferential direction of the body portion 11 at the same time, as shown in fig. 3, for example.

In some embodiments, at least a portion of the inner wall surface of the recess 12 is curved. That is, the inner wall surface of the concave portion 12 may be a curved surface or a combination of curved surfaces and flat surfaces. Illustratively, such as when the recess 12 is a U-shaped channel structure, the inner wall surface of the recess 12 includes at least two planar surfaces and at least one curved surface.

In some embodiments, the inner wall surface of the recess 12 is formed by intersecting a plurality of planes with each other. Illustratively, such as when the recess 12 is a square groove structure, the inner wall surface of the recess 12 is formed by combining five planes intersecting each other.

The application also provides a chassis, which comprises a subframe 100 and a bushing 1 of any embodiment, wherein the subframe 100 comprises a subframe body 120 and a sleeve 110 arranged on the subframe body 120, and the bushing 1 is used for being sleeved in the sleeve 110.

Further, the subframe 100 may have a sand drain hole 130, the sand drain hole 130 penetrating the subframe body 120 and the sleeve 110, and the recess 12 being disposed facing the sand drain hole 130. It will be appreciated that the recess 12 may be disposed directly opposite the sand drain hole 130 or may be offset from the sand drain hole 130, as this application is not limited in this respect.

The concave portion 12 is arranged facing the sand leakage hole 130, when the bushing 1 is assembled into the sleeve 110, the bushing 1 has good rigidity and strength at the surrounding part of the concave portion 12, and the elastic deformation quantity of the bushing 1 at the part facing the sand leakage hole 130 can be reduced, so that the probability that the bushing 1 is scratched by the sand leakage hole 130 of the subframe 100 is reduced, and the assembly qualification rate of the subframe 100 and the bushing 1 is improved.

The application also provides an automobile, which comprises the chassis and the automobile body, wherein the automobile body is connected with the chassis.

The bushing 1 and the auxiliary frame 100 of the embodiment of the application have higher assembly qualification rate, so that the assembly qualification rate of the automobile can be improved, and the assembly efficiency of the automobile is further improved.

As a specific embodiment of the present application, as shown in fig. 1 to 4, the liner 1 includes an outer tube portion 10, an inner tube portion 20, and a filling portion 30, the outer tube portion 10 includes a body portion 11 and a recess 12 provided to the body portion 11, the body portion 11 includes a first surface 111 and a second surface 112 opposed to each other along a direction perpendicular to its own axial direction X, the first surface 111 is provided away from an axis of the body portion 11, the second surface 112 is provided near the axis of the body portion 11, and the recess 12 is recessed with respect to the first surface 111 toward a direction near the axis of the body portion 11; the inner tube portion 20 is disposed within the outer tube portion 10; the filler portion 30 is connected to the second surface 112 and is located between the inner tube portion 20 and the outer tube portion 10,

wherein the body portion 11 further comprises a first end 113 and a second end 114 opposite to each other along its own axial direction X, the outer tube portion 10 further comprises a plurality of protrusions 13 and an extension portion 14, the plurality of protrusions 13 are connected to a side of the first end 113 facing away from the second end 114 and are spaced apart along the circumferential direction of the body portion 11; the extension 14 is connected to the second end 114 and projects with respect to the first surface 111 in a direction away from the axis of the body portion 11.

Further, by providing the plurality of protruding portions 13 and the extending portions 14, not only the structural strength of the outer tube portion 10 of the bush 1, in particular, the structural strength of the first end 113 can be enhanced, but also the outer tube portion 10 of the bush 1 can be made to form a positioning structure, so that the fitting position and the fitting effect of the bush 1 can be confirmed when the bush 1 is assembled, and the convenience of the fitting operation can be improved.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, the technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A bushing, comprising:

an outer tube portion including a body portion including a first surface and a second surface opposite to each other in a direction perpendicular to an axial direction thereof, the first surface being disposed away from the axis of the body portion, and a recess provided in the body portion, the second surface being disposed near the axis of the body portion, the recess being recessed with respect to the first surface toward a direction near the axis of the body portion;

an inner tube portion provided in the outer tube portion;

and a filling portion connecting the second surface and located between the inner tube portion and the outer tube portion.

2. The bushing of claim 1 wherein the bushing,

the body portion includes a first end and a second end axially opposite each other,

the outer tube part also comprises a plurality of convex parts, the convex parts are connected to one side of the first end, which is away from the second end, and the convex parts are distributed at intervals along the circumferential direction of the body part.

3. The bushing of claim 2 wherein the outer tube portion further comprises an extension connected to the second end and protruding relative to the first surface toward a direction away from the axis of the body portion.

4. The bushing of claim 2 wherein the recess is located between and adjacent to the first end and the second end.

5. The bushing of claim 1 wherein the recess is provided in a plurality,

the plurality of concave parts are arranged at intervals along the axial direction of the body part; and/or

The plurality of concave portions are arranged at intervals along the circumferential direction of the body portion.

6. The bushing of claim 1 wherein at least a portion of an inner wall surface of the recess is curved.

7. The bushing of claim 1 wherein the inner wall surface of the recess is formed by a plurality of planar surfaces intersecting one another.

8. A chassis, comprising:

the auxiliary frame comprises an auxiliary frame body and a sleeve arranged on the auxiliary frame body; and

a bushing as claimed in any one of claims 1 to 7 for fitting within the sleeve.

9. The chassis of claim 8, wherein the subframe has a sand drain hole extending through the subframe body and the sleeve, the recess being disposed facing the sand drain hole.

10. An automobile, comprising:

the chassis of claim 8 or 9; and

a body connected to the chassis.