CN213138409U

CN213138409U - Novel rear trailing arm assembly

Info

Publication number: CN213138409U
Application number: CN202021994508.5U
Authority: CN
Inventors: 邢芝永
Original assignee: Shandong Lichi New Energy Automobile Co ltd
Current assignee: Shandong Leichi New Energy Vehicle Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-07
Anticipated expiration: 2030-09-11

Abstract

The utility model relates to a novel rear trailing arm assembly, which comprises a trailing arm body, a first rubber sleeve, a second rubber sleeve and a third rubber sleeve, wherein the trailing arm body comprises a circular pipe section, a front section and a tail section, the front end and the front section of the circular pipe section are connected, the rear end and the tail section of the circular pipe section are connected, the front section and the tail section are in flat pipe structures, and the connecting positions of the front section and the tail section and the circular pipe section can be bent; the first rubber sleeve is arranged at the front section of the towing arm body, and a first hollow groove is formed in the position of the outer side of the shaft hole of the first rubber sleeve along the axial direction of the first rubber sleeve; the second gum cover sets up in the tail section middle part of dragging the arm body, and the shaft hole outside position of second gum cover is established to solid construction. The utility model discloses the afterbody gum cover to original back trailing arm assembly improves, with the solid gum cover structure originally, reforms into half solid structure gum cover, can alleviate the impact that back trailing arm assembly received in the drive process, and the frequency of vibration of trailing the assembly after reducing will be hard to resist of gum cover position originally and change into elastic buffer.

Description

Novel rear trailing arm assembly

Technical Field

The utility model relates to a novel rear trailing arm assembly.

Background

The trailing arm type suspension system has the greatest advantages that the space between the left wheel and the right wheel is large, the camber angle of a vehicle body is not changed, the shock absorber does not generate bending stress, so that the friction is small, the riding performance is good, when the trailing arm type suspension system brakes, except that the vehicle head is heavy and can sink, the rear wheel suspended by the trailing arm can also sink to balance the vehicle body, the trailing arm type suspension system has the defect that precise geometric control cannot be provided, and if the trailing arm type suspension system is properly adjusted, the best effect can be achieved with the minimum cost and space, so that the rear suspension of the form is mostly adopted by the existing small-sized vehicles.

At present, small-size four-wheel electric automobile adopts drag arm-type suspension structure more, nevertheless because the structure and the working characteristics of dragging the arm, the back drag arm assembly receives impact and vibrations repeatedly, leads to the back to drag the arm assembly and appear afterbody gum cover fracture problem after long-time the use easily, reduces the performance of hanging, causes the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel after drag arm assembly, its structural design is reasonable, the afterbody gum cover to original after drag arm assembly improves, with original solid gum cover structure, reform transform into semi-solid structure gum cover, can alleviate the impact that the after drag arm assembly received in the drive process, reduce the vibration frequency of after drag assembly, rigid resistance with the gum cover position originally changes into elastic buffer, the life who drags arm assembly after improving has solved the problem that exists among the prior art.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a novel rear trailing arm assembly comprising:

the towing arm comprises a towing arm body, wherein the towing arm body comprises a circular pipe section, a front section and a tail section, the front end of the circular pipe section is connected with the front section, the rear end of the circular pipe section is connected with the tail section, and the front section and the tail section are in flat pipe structures, so that the connecting positions of the front section and the tail section and the circular pipe section can be bent;

the first rubber sleeve is arranged at the front section of the towing arm body, and a first hollow groove is formed in the position outside the shaft hole of the first rubber sleeve along the axial direction of the first rubber sleeve;

the second rubber sleeve is arranged in the middle of the tail section of the towing arm body, and the outer side of the shaft hole of the second rubber sleeve is of a solid structure;

and the third rubber sleeve is arranged at the end part of the tail section of the towing arm body, and a second hollow groove is formed in the position of the outer side of the shaft hole of the third rubber sleeve along the axial direction of the third rubber sleeve.

Furthermore, the first hollow groove and the second hollow groove are respectively provided with two grooves which are symmetrically arranged along the shaft hole.

Furthermore, the first hollow groove and the second hollow groove are set to be in the same shape, the first hollow groove and the second hollow groove are set to be V-shaped grooves, and a middle connecting line of the two symmetrically-arranged V-shaped grooves is parallel to the axial direction of the front section or the tail section.

Further, the middle part in V type groove is kept away from the shaft hole sets up, the both ends position in V type groove is close to relatively the shaft hole forms V type groove structure.

Furthermore, the first rubber sleeve, the second rubber sleeve and the third rubber sleeve respectively comprise a sleeve and a sleeve core, the sleeve is connected with the towing arm body in a pressing and welding mode, and the sleeve core is in interference fit with the sleeve.

The utility model adopts the above structure beneficial effect be, its structural design is reasonable, and the afterbody gum cover to original back trailing arm assembly improves, with original solid gum cover structure, reforms into semi-solid structure gum cover, can alleviate the impact that the back trailing arm assembly received in the drive process, the frequency of vibration of trailing the assembly after reducing, rigid resistance with the gum cover position originally changes into elastic buffer, the life of trailing arm assembly after improving.

Drawings

Fig. 1 is a schematic top view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic sectional view of the direction a-a of the present invention.

Fig. 4 is a schematic sectional view of the direction B-B of the present invention.

Fig. 5 is a schematic sectional view of the C-C direction of the present invention.

In the figure, 1, a trailing arm body; 101. a circular pipe section; 102. a front section; 103. a tail section; 2. a first rubber sleeve; 201. a first hollow groove; 3. a second rubber sleeve; 4. a third rubber sleeve; 401. a second hollow channel.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements 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 "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 5, a novel rear trailing arm assembly comprises a trailing arm body 1, a first rubber sleeve 2, a second rubber sleeve 3 and a third rubber sleeve 4, wherein the trailing arm body 1 comprises a circular pipe section 101, a front section 102 and a tail section 103, the front end of the circular pipe section 101 is connected with the front section 102, the rear end of the circular pipe section 101 is connected with the tail section 103, the front section 102 and the tail section 103 are in a flat pipe structure, so that the connection positions of the front section 102 and the tail section 103 and the circular pipe section 101 can be bent; the first rubber sleeve 2 is arranged at the front section 102 of the trailing arm body 1, and a first hollow groove 201 is formed in the position, along the axial direction, outside the shaft hole of the first rubber sleeve 2; the second rubber sleeve 3 is arranged in the middle of the tail section 103 of the trailing arm body 1, and the outer side of the shaft hole of the second rubber sleeve 3 is of a solid structure; the third gum cover 4 sets up at the tail section 103 tip of trailing arm body 1, makes second gum cover 3 be located between first gum cover 2 and the third gum cover 4 position, and the shaft hole outside position of third gum cover 4 is equipped with second hollow groove 401 along its axial. In this embodiment, become half solid construction gum cover with third gum cover 4, structural design through second hollow groove 401 makes third gum cover 4 and the hub connection of car rear axle after, can alleviate the impact that back trailing arm assembly received in the driving process, reduce the vibration frequency of back trailing arm assembly, hard resisting the change into elastic buffer of 4 positions of third gum cover originally, ensure the solid construction of second gum cover 3, guarantee the normal rotation drive of axle, under the prerequisite of guaranteeing effective drive transmission, improve the life of back trailing arm assembly.

In a preferred embodiment, two first hollow grooves 201 and two second hollow grooves 401 are provided, and are symmetrically arranged along the shaft hole. In order to increase the stability and the intensity of the semi-solid structure of the first rubber sleeve 2 and the third rubber sleeve 4, the damage in the buffering process is avoided, the first hollow groove 201 and the second hollow groove 401 are symmetrically arranged respectively, the impact force is effectively dispersed, and the durability of the first rubber sleeve 2 and the third rubber sleeve 4 is improved.

In a preferred embodiment, the first hollow groove 201 and the second hollow groove 401 are provided in the same shape, the first hollow groove 201 and the second hollow groove 401 are provided as V-shaped grooves, and the middle connecting line of the two symmetrically arranged V-shaped grooves is parallel to the axial direction of the front section or the tail section. The structure of the V-shaped groove is set in position and matched with the structure of the towing arm body 1, so that the V-shaped groove can effectively buffer the impact force from the towing arm body 1.

In a preferred embodiment, the middle part of the V-shaped groove is far away from the shaft hole, and the two ends of the V-shaped groove are relatively close to the shaft hole to form a V-shaped groove structure. In order to ensure that the V-shaped groove does not influence the structural strength of the rubber sleeve, the V-shaped groove is arranged according to the structural mode of the embodiment.

In a preferred embodiment, the first rubber sleeve 2, the second rubber sleeve 3 and the third rubber sleeve 4 respectively comprise a sleeve and a sleeve core, the sleeve and the trailing arm body are connected in a press-fit welding mode, and the sleeve core and the sleeve are in interference fit.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. A novel rear trailing arm assembly, comprising:

2. The novel rear trailing arm assembly of claim 1 wherein there are two of the first and second hollow slots, respectively, symmetrically disposed about the axle bore.

3. The novel rear trailing arm assembly of claim 2 wherein the first and second hollow grooves are configured in the same shape, the first and second hollow grooves are configured as V-shaped grooves, and a line connecting the midpoints of the two symmetrically configured V-shaped grooves is parallel to the axial direction of the front or rear section.

4. The novel rear trailing arm assembly of claim 3 wherein the middle portion of the V-shaped groove is disposed away from the axle hole, and the ends of the V-shaped groove are disposed relatively close to the axle hole to form a V-shaped groove structure.

5. The novel rear trailing arm assembly of claim 4 wherein the first, second and third rubber sleeves each include a sleeve and a sleeve core, the sleeve and the trailing arm body are press-welded together, and the sleeve core and the sleeve are in interference fit.