CN209756686U

CN209756686U - Drag arm bush, drag arm assembly and car

Info

Publication number: CN209756686U
Application number: CN201920462262.8U
Authority: CN
Inventors: 李�雨
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2019-12-10
Anticipated expiration: 2029-04-08

Abstract

The utility model provides a pull arm bush, pull arm assembly and car should pull the arm bush and include: the bushing comprises a bushing main body, a plurality of clamping grooves and a plurality of connecting pieces, wherein the bushing main body is columnar, and the outer side wall of the bushing main body is provided with at least two clamping grooves along the axial direction of the bushing main body; at least two bush inserts, the bush inserts orientation be formed with on the inside wall of bush main part with joint groove assorted joint portion, each the bush inserts passes through joint portion and one joint groove looks joint. The utility model provides a pull arm bush adopts bush main part and bush inserts matched with mode, uses with pulling the arm cooperation, not only conveniently pulls the arm bush and pulls the dismouting of arm, also can realize pulling the used repeatedly of arm bush simultaneously.

Description

Drag arm bush, drag arm assembly and car

Technical Field

The utility model relates to a vehicle suspension field, in particular to pull arm bush, pull arm assembly and car.

background

the suspension is a general term for all force-transmitting connecting devices between a frame (or a load-bearing vehicle body) and an axle (or a wheel) of an automobile, and has the functions of transmitting force and torque acting between the wheel and the frame, buffering impact force transmitted to the frame or the vehicle body from an uneven road surface, and reducing vibration caused by the impact force so as to ensure that the automobile can run smoothly.

the trailing arm type suspension is a semi-independent suspension. The trailing arm type suspension is a suspension structure specially designed for rear wheels, the structure of the trailing arm type suspension is very simple, rigid connection between wheels and a vehicle body or a vehicle frame is realized through upper and lower swinging trailing arms, then a hydraulic shock absorber and a spiral spring are used as soft connection to play a role in absorbing shock and supporting the vehicle body, and a cylindrical or square cross beam is connected with a left wheel and a right wheel.

The area that trailing arm and automobile body are connected is provided with the trailing arm bush to play buffering, damping, improve whole car travelling comfort's effect, in order to make each system of chassis suspension and chassis merge perfectly, the vehicle reaches better travelling comfort, need all need change the trailing arm bush through the debugging of many rounds at every turn.

At present, the assembly process of the towing arm comprises the steps of placing the towing arm bushing above the towing arm support of the towing arm, using a specific press-fitting tool, and assembling through interference fit between the towing arm bushing and the towing arm support.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pull arm bush, pull arm assembly and car for solve and pull the arm among the prior art and pull the unable used repeatedly's of arm bush problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

According to an aspect of the utility model, a drag arm bush is provided, include:

the bushing comprises a bushing main body, a plurality of clamping grooves and a plurality of connecting pieces, wherein the bushing main body is columnar, and the outer side wall of the bushing main body is provided with at least two clamping grooves along the axial direction of the bushing main body;

At least two bush inserts, the bush inserts orientation be formed with on the inside wall of bush main part with joint groove assorted joint portion, each the bush inserts passes through joint portion and one joint groove looks joint.

Further, the joint groove is the wedge groove, joint portion for with wedge groove assorted wedge arch.

Further, the wedge groove includes: the bushing comprises an arc-shaped bottom surface along the circumferential direction of the bushing main body, and a first side wall and a second side wall which are respectively intersected with the arc-shaped bottom surface; the first side wall and the arc-shaped bottom surface form a first included angle, the second side wall and the arc-shaped bottom surface form a second included angle, and the first included angle and the second included angle are acute angles.

Further, the wedge-shaped protrusion comprises a top end face and a bottom end face along the axial direction of the bushing main body, the top end face comprises a top edge facing the bushing main body, the bottom end face comprises a bottom edge facing the bushing main body, and the top edge and the bottom edge are both provided with chamfers.

Further, a groove is arranged on the outer side wall of the bushing insert, which faces away from the bushing main body.

Further, the bushing body includes: the metal inner tube and the metal outer tube that the cover was located the metal inner tube outside, it has the rubber body to fill between metal inner tube and the metal outer tube, the metal inner tube with the metal outer tube passes through the rubber body is connected.

further, the rubber body is provided with at least two damping holes.

according to another aspect of the present invention, there is provided a towing arm assembly, including: the drag arm, still include: the trailing arm bushing as described above; the outer framework of the dragging arm support of the dragging arm is cylindrical, and the dragging arm bushing is arranged in the outer framework of the dragging arm support and is in butt joint with the inner side wall of the outer framework of the dragging arm support.

furthermore, at least two guide ribs are arranged on the inner side wall of the outer framework of the dragging arm support, a strip-shaped channel is formed between every two adjacent bushing inserts in the bushings of the dragging arms, and each guide rib is located in one strip-shaped channel.

According to yet another aspect of the present invention, there is provided an automobile comprising a trailing arm assembly as described above.

The utility model has the advantages that:

Above-mentioned technical scheme adopts bush main part and bush inserts matched with mode, uses with dragging the arm cooperation. The assembly of the lining of the dragging arm is realized by clamping the clamping groove in the lining main body and the clamping part in the lining insert, and meanwhile, the combination mode of the lining of the dragging arm and the dismounting and mounting of the dragging arm are facilitated, so that the repeated use of the lining of the dragging arm is realized.

Drawings

Fig. 1 is an exploded view of a trailing arm bushing according to an embodiment of the present invention;

FIG. 2 illustrates one of the bushing inserts provided by the embodiments of the present invention;

Figure 3 illustrates a cross-sectional view of a liner insert provided by an embodiment of the present invention;

Fig. 4 shows a second schematic view of a bushing insert according to an embodiment of the present invention;

FIG. 5 is a schematic view of an exoskeleton of a trailing arm support provided in an embodiment of the present invention;

Fig. 6 is a schematic view illustrating an assembly of the outer frame of the bracket of the trailing arm and the bush of the trailing arm according to an embodiment of the present invention;

Fig. 7 is an assembled cross-sectional view of a trailing arm bracket exoskeleton and a trailing arm bushing according to an embodiment of the present invention.

Description of reference numerals:

11. a bushing body; 111. a metal inner tube; 112. a metal outer tube; 113. a rubber body; 114. a damping hole; 12. a clamping groove; 121. an arcuate bottom surface; 122. a first side wall; 123. a second side wall; 13. a bushing insert; 131. a trench; 14. a clamping part; 141. chamfering; 21. an outer skeleton of the drag arm support; 22. and (5) guiding ribs.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can 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 scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a drag arm bushing, which includes:

The bushing comprises a bushing main body 11, wherein the bushing main body 11 is columnar, and at least two clamping grooves 12 are formed in the outer side wall of the bushing main body 11 along the axial direction of the bushing main body 11;

At least two bush inserts 13, bush insert 13 is formed with on the inside wall towards bush main part 11 with joint portion 14 of joint groove 12 assorted, each bush insert 13 passes through joint portion 14 and a joint groove 12 looks joint.

It should be noted that the number of the snap grooves 12 can be set according to debugging requirements, for example, the number can be 2-6, and the plurality of snap grooves 12 are uniformly distributed on the outer side wall of the bushing main body 11. Preferably, the number of the catching grooves 12 is 6, but not limited thereto. The number of the bush inserts 13 is the same as the number of the snap grooves 12, that is, one bush insert 13 is snapped at each snap groove 12.

Preferably, the clamping groove 12 communicates with the bottom and the top of the bushing main body 11, and the clamping portion 14 can enter the clamping groove 12 through the bottom or the top of the bushing main body 11, so that the clamping portion 14 is clamped with the clamping groove 12. Since the bushing insert 13 is formed in an arc shape as a whole because the bushing body 11 is formed in a cylindrical shape and the outer side wall thereof is formed in an arc shape.

The embodiment of the utility model provides an in, adopt bush main part 11 and bush inserts 13 matched with mode, use with dragging the arm cooperation. The clamping groove 12 in the bushing main body 11 is clamped with the clamping portion 14 in the bushing insert 13, so that the assembly of the drag arm bushing is realized, and meanwhile, the combination mode of the drag arm bushing is convenient for the disassembly and the assembly of the drag arm bushing and the drag arm, so that the reuse of the drag arm bushing is realized.

Continuing to refer to fig. 1, in order to facilitate the connection of bushing main body 11 and bushing insert 13, on the basis of the above embodiment of the present invention, in the embodiment of the present invention, the clamping groove 12 is a wedge-shaped groove, and the clamping portion 14 is a wedge-shaped protrusion matched with the wedge-shaped groove.

It should be noted that the wedge-shaped groove includes: an arc-shaped bottom surface 121 along a circumferential direction of the liner main body 11 and first and second side walls 122 and 123 intersecting the arc-shaped bottom surface 121, respectively; the first side wall 122 and the arc-shaped bottom surface 121 form a first included angle, the second side wall 123 and the arc-shaped bottom surface 121 form a second included angle, and the first included angle and the second included angle are acute angles.

the wedge-shaped protrusion comprises an arc-shaped convex surface matched with the arc-shaped bottom surface 121, and a third side wall and a fourth side wall which are arranged on two sides of the arc-shaped convex surface, wherein the third side wall and the arc-shaped convex surface are intersected to form a third included angle, the fourth side wall and the arc-shaped convex surface are intersected to form a fourth included angle, and the third included angle and the fourth included angle are acute angles.

Preferably, the first included angle, the second included angle, the third included angle and the fourth included angle are the same. Through arc bottom surface 121 and arc convex surface cooperation, first contained angle, second contained angle cooperate with third contained angle, fourth contained angle respectively, accomplish the protruding joint of wedge groove and wedge to realize being connected of bush main part 11 and bush inserts 13.

Referring to fig. 2 and 4, in order to facilitate the wedge-shaped protrusion to enter the wedge-shaped groove, on the basis of the above embodiments of the present invention, in the embodiment of the present invention, the wedge-shaped protrusion includes the top end surface and the bottom end surface along the axial direction of the bushing main body 11, the top end surface includes the top edge toward the bushing main body 11, the bottom end surface includes the bottom edge toward the bushing main body 11, and the top edge and the bottom edge are both provided with the chamfers 141.

It should be noted that the chamfer 141 may be provided only at the top or bottom edge.

Referring to fig. 1-4, in order to facilitate the loading and unloading of the drag arm bushing, on the basis of the above embodiments of the present invention, in the embodiment of the present invention, a groove 131 is provided on the outer sidewall of the bushing insert 13 facing away from the bushing main body 11.

It should be noted that the number of the grooves 131 may be one or more; a plurality of trenches 131 may be included that are criss-crossed. For example, the number of the grooves 131 is 3, and the grooves include a first groove, a second groove, and a third groove, wherein the first groove is parallel to the second groove, and the third groove is perpendicular to the first groove and the second groove, respectively. Preferably, the bushing insert 13 is provided with at least one groove 131 along the axial direction of the bushing body 11; the diameter of the groove 131 may be set by itself, for example, the diameter of the groove 131 may be 1mm, but is not limited thereto. By injecting a lubricating fluid such as grease into the groove 131, the mounting and dismounting of the trailing arm bushing is facilitated.

With continued reference to fig. 1, on the basis of the above embodiments of the present invention, in an embodiment of the present invention, the bushing main body 11 includes: the metal inner tube 111 and the metal outer tube 112 are sleeved outside the metal inner tube 111, a rubber body 113 is filled between the metal inner tube 111 and the metal outer tube 112, and the metal inner tube 111 and the metal outer tube 112 are connected through the rubber body 113.

It should be noted that at least two damping holes 114 are provided in the rubber body 113.

Referring to fig. 1, 5, 6 and 7, in accordance with yet another aspect of the present invention, there is provided a trailing arm assembly comprising: the drag arm, still include: the drag arm bushing provided by each of the above utility model embodiments; the outer framework 21 of the dragging arm support of the dragging arm is cylindrical, and the dragging arm bushing is arranged in the outer framework 21 of the dragging arm support and is abutted against the inner side wall of the outer framework 21 of the dragging arm support.

it should be noted that, in order to facilitate the mounting and dismounting of the trailing arm bushing to and from the trailing arm bracket exoskeleton 21, at least two guide ribs 22 are provided on the inner side wall of the trailing arm bracket exoskeleton 21, a strip-shaped channel is formed between two adjacent bushing inserts 13 in the trailing arm bushing, and each guide rib 22 is located in the strip-shaped channel. Preferably, the number of guide ribs 22 is equal to the number of bushing inserts 13 in the trailing arm bushing. The guide ribs 22 can of course also be located in the grooves 131 of the bushing insert 13 in the axial direction of the bushing body 11.

According to the utility model discloses a still another aspect provides an automobile, including the arm assembly that pulls that each utility model embodiment provided above-mentioned provided.

The embodiment of the utility model provides an in, adopt bush main part and bush inserts matched with mode, use with dragging the arm cooperation. The assembly of the lining of the dragging arm is realized by clamping the clamping groove in the lining main body and the clamping part in the lining insert, and meanwhile, the combination mode of the lining of the dragging arm and the dismounting and mounting of the dragging arm are facilitated, so that the repeated use of the lining of the dragging arm is realized.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

Claims

1. a trailing arm bushing, comprising:

The bushing body (11), the bushing body (11) is columnar, and at least two clamping grooves (12) are formed in the outer side wall of the bushing body (11) along the axial direction;

At least two bush inserts (13), bush inserts (13) orientation be formed with on the inside wall of bush main part (11) with joint groove (12) assorted joint portion (14), each bush inserts (13) pass through joint portion (14) and one joint groove (12) looks joint.

2. The trailing arm bushing of claim 1, wherein the snap-in groove (12) is a wedge-shaped groove and the snap-in portion (14) is a wedge-shaped projection that mates with the wedge-shaped groove.

3. The trailing arm bushing of claim 2 wherein the wedge groove comprises: an arc-shaped bottom surface (121) along the circumferential direction of the bushing main body (11) and a first side wall (122) and a second side wall (123) which respectively intersect the arc-shaped bottom surface (121); the first side wall (122) and the arc-shaped bottom surface (121) form a first included angle, the second side wall (123) and the arc-shaped bottom surface (121) form a second included angle, and the first included angle and the second included angle are acute angles.

4. the trailing arm bushing according to claim 2, wherein the wedge-shaped protrusion comprises a top end face and a bottom end face in the axial direction of the bushing body (11), the top end face comprising a top edge facing the bushing body (11), the bottom end face comprising a bottom edge facing the bushing body (11), the top and bottom edges each being provided with a chamfer (141).

5. the trailing arm bushing according to claim 1, wherein the outer side wall of the bushing insert (13) facing away from the bushing body (11) is provided with a groove (131).

6. The trailing arm bushing according to claim 1, wherein the bushing body (11) comprises: the metal tube (111) and the metal outer tube (112) that the cover was located the metal inner tube (111) outside, it has rubber body (113) to fill between metal inner tube (111) and the metal outer tube (112), metal inner tube (111) with the metal outer tube (112) pass through rubber body (113) are connected.

7. The trailing arm bushing according to claim 6, wherein the rubber body (113) is provided with at least two damping holes (114).

8. a trailing arm assembly comprising: the drag arm, its characterized in that still includes: the trailing arm bushing of any one of claims 1 to 7; the outer framework (21) of the dragging arm support of the dragging arm is cylindrical, and the lining of the dragging arm is arranged in the outer framework (21) of the dragging arm support and is abutted to the inner side wall of the outer framework (21) of the dragging arm support.

9. The trailing arm assembly of claim 8, wherein the trailing arm carrier exoskeleton (21) has at least two guide ribs (22) disposed on its inner side wall, and wherein a strip-shaped channel is formed between two adjacent liner inserts (13) in the trailing arm liner, and wherein each guide rib (22) is located in one of the strip-shaped channels.

10. An automobile comprising a trailing arm assembly according to claim 8 or 9.