CN113446341B

CN113446341B - Bushing for vehicle upper support

Info

Publication number: CN113446341B
Application number: CN202010219777.2A
Authority: CN
Inventors: 张莎莎; 丁维
Original assignee: Pullman Co
Current assignee: Pullman Co
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2022-09-23
Anticipated expiration: 2040-03-25
Also published as: CN113446341A

Abstract

The application discloses a bush for supporting on vehicle includes: the inner side supporting part is provided with a main body and a plurality of first protruding parts formed on the upper surface of the main body; the elastic part wraps the inner side supporting part, a plurality of second protruding parts are formed on the surface of the elastic part at intervals, and a flat interval part is formed between every two adjacent second protruding parts, so that all the first protruding parts are covered by the interval part. The application provides a elasticity portion for supporting bush on vehicle is thereby only compressed with the second bulge basically and guarantee that it has better cushioning effect (improvement comfort level), and the support of first bulge has guaranteed that the elasticity portion can not by excessive compression, and then increase of service life. Thus, the bush achieves a balance of satisfying a shock absorbing action and prolonging a service life.

Description

Bushing for vehicle upper support

Technical Field

The present invention relates to the field of vehicle component manufacturing, and in particular to the field of the manufacture of bushings for supports on vehicles.

Background

With the rapid development of the automobile industry, in order to shorten the design time and reduce the production cost, the modularization of automobile parts becomes a trend. The support is as the important part of connecting bumper shock absorber and automobile body on the bumper shock absorber, can attenuate the damping force of bumper shock absorber, reduces the automobile body vibration, improves the travelling comfort. In recent years, the modular design of the upper support of the shock absorber has also been greatly improved, and a plurality of upper supports of the shock absorber are available, and the metal support and the bush are separated, so that when the upper support is applied to similar vehicle models, the sizes of the metal support and the bush are simply changed, and the development time is further shortened.

As shown in fig. 1 and 2, the bushings which are currently commonly used for vehicle support have an inner plastic core 1 ' and an elastic portion 2 ' arranged in an outer metal support 10 '. The cross-section of the plastic core 1' is flat and substantially annular. The elastic part 2 'can be externally wrapped on the plastic core 1', and a plurality of protrusions 21 'are formed on the upper surface of the elastic part 2'.

As shown in fig. 1, the main force-receiving direction of the support on the shock absorber is the axial direction (the up-down direction in fig. 1), and the plurality of protrusions 21 ' on the elastic portion 2 ' can be compressed as much as possible (i.e., the axial compression amount is large), so that the elastic portion 2 ' has a good shock-absorbing effect (in order to satisfy the comfort of the occupant). However, during the running of the vehicle, the elastic part 2 'is compressed continuously in a way of large compression amount without any limitation, which results in the shortened service life, i.e. the service life of the elastic part 2' and the damping action are in a contradiction relationship, and the current structure can only meet the comfort level by sacrificing the service life.

Therefore, with the improvement of the overall performance requirement of the vehicle component manufacturing field, how to improve the service life of the bushing under the premise of meeting the damping effect (having good comfort level) becomes a problem to be solved urgently.

Disclosure of Invention

In view of the deficiencies in the background art, the present invention provides a bushing for a support on a vehicle, comprising:

the inner side supporting part is provided with a main body and a plurality of first protruding parts formed on the upper surface of the main body;

the elastic part wraps the inner side supporting part, a plurality of second convex parts are formed on the surface of the elastic part at intervals, and a flat interval part is formed between every two adjacent second convex parts, so that all the first convex parts are covered by the interval part.

The second bulge of the elastic part of the bushing provided by the invention is used for receiving vertical pressure to generate deformation, but the vertical compression of the elastic part is limited due to the support of the first bulge. From this, the elastic part is guaranteed it to have better cushioning effect (improvement comfort level) only with the mode that the second bulge compressed basically, and the support of first bulge has guaranteed that the elastic part can not by excessive compression, and then increase of service life. Therefore, the bushing has good damping effect and prolonged service life.

In some embodiments of the invention, a plurality of the first projections are evenly circumferentially distributed; the second convex parts are distributed in a circumferential mode, and a flat interval part is formed between every two adjacent second convex parts, so that all the first convex parts are covered by the interval part.

In some embodiments of the invention, the body has an annular cross-section, and the plurality of first projections are distributed annularly along the body.

In some embodiments of the invention, the lower surface of the body is likewise formed with a plurality of said first projections distributed annularly along the body; a plurality of second convex parts are formed on the lower surface of the elastic part in the same way.

In some embodiments of the present invention, the first protrusion has a trapezoidal shape, and the second protrusion has a trapezoidal shape.

The first protruding parts are designed in a trapezoidal shape, so that a downward recess is formed between two adjacent first protruding parts. The second convex part is just positioned above the concave parts of two adjacent first convex parts. Therefore, when the second bulge is compressed, the adjacent two first bulges support the second bulge by the inclined edge, so that the elastic part can be ensured to have a certain compression amount, and the elastic part is prevented from being excessively compressed.

In some embodiments of the invention, the medial support is made of plastic; the elastic part is made of rubber and is directly vulcanized on the inner supporting part to wrap the inner supporting part.

In some embodiments of the present invention, the bushing for a support on a vehicle further comprises:

an inner core having a directional indicia such that the directional indicia is exposed after it is wrapped by the inner support portion.

In some embodiments of the present invention, the lining for a vehicle upper support, the inner core is formed with a through hole, and the direction mark is represented by a notch formed by the through hole in an outer direction.

In some embodiments of the present invention, the inner core is made of a metal material.

In some embodiments of the present invention, the bushing for supporting on a vehicle further includes an outer supporting portion sleeved on the elastic portion by an outer side, which does not affect the compression of the second protruding portion by the external axial pressure and can limit the radial expansion of the elastic portion.

Drawings

FIG. 1 is an exploded view of a prior art bushing for use in a support on a vehicle;

FIG. 2 is a cross-sectional view of a prior art bushing for use in a vehicle support;

FIG. 3 is an exploded view of a bushing for a support on a vehicle according to one embodiment of the present invention;

FIG. 4 is an assembly view of a bushing for a support on a vehicle according to one embodiment of the present invention;

fig. 5 is a schematic view of the core showing the mounting indicia.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

As shown in FIGS. 3 to 4, the bushing for supporting on a vehicle according to the present embodiment mainly includes an inner supporting portion 1 and an elastic portion 2. The inner support 1 has a main body 11 and a plurality of first protrusions 12 formed on an upper surface of the main body 11. The elastic part 2 wraps the inner side support part 1, a plurality of second convex parts 21 are formed on the surface of the elastic part 2 at intervals, and a flat interval part 22 is formed between two adjacent second convex parts 21, so that all the first convex parts 12 are covered by the interval part 22.

The second projecting portion 21 of the elastic portion 2 is adapted to receive a vertical pressure to be deformed, but the vertical compression of the elastic portion 2 is restricted due to the support of the first projecting portion 12. Thus, the elastic part 2 is guaranteed to have a good shock-absorbing effect (comfort is improved) basically only in the way that the second projecting part 21 is compressed, while the support of the first projecting part 12 guarantees that the elastic part 2 is not compressed excessively, thereby prolonging the service life.

Further, the plurality of first protruding portions 12 may be uniformly distributed circumferentially, the plurality of second protruding portions 21 are similarly distributed circumferentially, and a flat spacing portion 22 is formed between two adjacent second protruding portions 21, so that all first protruding portions 12 are covered by the spacing portion 22.

Furthermore, the main body 11 of the inner supporting portion 1 may be a circular cake shape as shown in fig. 3 to 4, and the cross section of the main body is annular, and the plurality of first protrusions 12 are annularly distributed along the main body 11. At this time, the elastic part 2 is wrapped by the outer side and upper and lower sides of the main body 11.

It will be appreciated by those skilled in the art that the lower surface of the body 11 may likewise be formed with a plurality of first projections 12 distributed annularly along the body 11, ensuring that the first projections 12 support the lower portion of the resilient part 2 when pressure from below is applied to the second projections 21. Correspondingly, the lower surface of the elastic portion 2 is similarly formed with a plurality of second projections 21. That is, the upper and lower surfaces of the inner support 1 have the identical structure, and the upper and lower surfaces of the elastic part 2 have the identical structure.

Furthermore, it will be understood by those skilled in the art that the main body 11 of the inner support 1 does not have to be in the shape of a pie having an annular cross-section, but may be rectangular, hexagonal, etc. In this embodiment, the main body 11 is shaped like a pie with an annular cross section to fit the existing external metal bracket 10'.

In the present embodiment, the first projecting portion 12 is designed in a trapezoidal shape, and thus a recess is formed between two adjacent first projecting portions 12. The second projecting portion 21 is located just above the recesses of the adjacent two first projecting portions 12. Therefore, when the second protruding portion 21 is compressed, the two adjacent first protruding portions 12 support the second protruding portion 21 by the oblique edges, so that the elastic portion 2 can be ensured to have a certain amount of compression, and the entire elastic portion 2 is prevented from being excessively compressed.

In the present embodiment, the second protruding part 21 is also designed to be trapezoidal, so that the vertical pressure can be dispersed over the entire elastic part 2 by the long side of the bottom thereof, thereby prolonging the service life.

It should be noted that all of the first protruding portion 12 is covered by the spacer 22, and the spacer 22 still has a flat surface after covering the first protruding portion 12 and does not become protruding therewith. In other words, the first projecting portion 12 and the second projecting portion 21 do not overlap with each other, and although this overlapping manner enables the first projecting portion 12 to support the elastic portion 2, thereby improving the service life, the compression of the elastic portion 2 is excessively restricted, and the damping effect is deteriorated.

In this embodiment, the inner support 1 is made of plastic. The elastic part 2 is made of rubber and is directly vulcanized on the inner supporting part 1 to wrap the same.

In another embodiment, the bushing for a vehicle support further comprises an inner core 3, the inner core 3 may be in the shape of a pie as shown in FIGS. 3-4. The core 3 has a direction mark 31 thereon such that the direction mark 31 is exposed after it is wrapped by the inner support 1.

As shown in fig. 5, the core 3 is further formed with a through hole 32, and the direction mark 31 is represented as a notch formed in an outer direction from the through hole 32. The inner core 3 is made of a metal material (a metal material that meets the manufacturing standard for the bush). The reason for this is that the through hole 32 can be used for connecting the inner core 3 and the outer component, and after the inner support 1 is wrapped around the inner core 3, the position of the first protrusion 12 on the inner support 1 can be determined by the direction mark 31, thereby providing a recognizable directional position for the subsequent wrapping or vulcanization of the elastic part 2 on the inner support 1 (i.e. such that the spacer 22 on the elastic part 2 is overlaid on the first protrusion 12, but not the second protrusion 21 on the elastic part 2 is overlaid on the first protrusion 12).

In another embodiment, the bushing for supporting on the vehicle further includes an outer supporting portion 4 sleeved on the elastic portion 2 from the outside. The outer support portion 4 does not affect the second projecting portion 21 from being compressed by the external vertical pressure, but can restrict the elastic portion 2 from expanding radially by the external pressure.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and are not limitative. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A bushing for use in a support on a vehicle, comprising:

an inner support part (1) having a main body (11) and a plurality of first protrusions (12) formed on an upper surface of the main body (11);

and the elastic part (2) wraps the inner side supporting part (1), a plurality of second convex parts (21) are formed on the surface of the elastic part at intervals, and a flat interval part (22) is formed between every two adjacent second convex parts (21) so that all the first convex parts (12) are covered by the interval part (22).

2. A bushing for a support on a vehicle as defined in claim 1, wherein:

a plurality of said first projections (12) are uniformly circumferentially distributed;

the plurality of second convex parts (21) are distributed in a circumferential mode, and a flat interval part (22) is formed between every two adjacent second convex parts (21) so that all the first convex parts (12) are covered by the interval part (22).

3. A bushing for a vehicle upper support according to claim 2, wherein:

the cross section of the main body (11) is annular, and the first protruding parts (12) are distributed annularly along the main body (11).

4. A bushing for a vehicle upper support according to claim 3, wherein:

the lower surface of the main body (11) is similarly formed with a plurality of first projections (12) distributed annularly along the main body (11);

a plurality of second protruding parts (21) are formed on the lower surface of the elastic part (2) in the same way.

5. A bushing for a support on a vehicle according to claim 1, wherein:

the first protruding portion (12) is trapezoidal, and the second protruding portion (21) is trapezoidal.

6. A bushing for a support on a vehicle as defined in claim 1, wherein:

the inner side supporting part (1) is made of plastics;

the elastic part (2) is made of rubber and is directly vulcanized on the inner side supporting part (1) to wrap the inner side supporting part.

7. A bushing for a support on a vehicle according to any of claims 1-6 further comprising:

an inner core (3) having a direction mark (31) such that the direction mark (31) is exposed after it is wrapped by the inner support (1).

8. A bushing for a vehicle upper support according to claim 7, wherein:

the inner core (3) is provided with a through hole (32), and the direction mark (31) is a gap formed by the through hole (32) towards the outer side.

9. A bushing for a vehicle upper support according to claim 8, wherein:

the inner core (3) is made of metal materials.

10. The bushing for a vehicle upper support of claim 7, further comprising:

and the outer supporting part (4) is sleeved on the elastic part (2) from the outer side, does not influence the compression of the second bulge part (21) under the external axial pressure, and can limit the radial expansion of the elastic part (2).