CN220447583U - Integrated bridge shell type electric automobile rear axle and electric automobile - Google Patents

Abstract

The utility model discloses an integrated bridge shell type electric automobile rear axle and an electric automobile, comprising: gearbox housing, gearbox case lid and motor flange integrated into one piece formula structure. The axle tube is characterized by comprising an axle cladding and an axle tube, wherein the gearbox housing and the axle cladding are of an integrated structure, the axle cladding is sleeved on the axle tube, a first flange is arranged on the periphery of the axle cladding, a second flange is arranged on the periphery of the axle tube, and the first flange and the second flange are connected in a penetrating manner through a fastener. Through design gearbox case lid and motor flange as integrated into one piece formula structure, gearbox casing and bridge cladding design are integrated into one piece formula structure, can reduce the weight that both combine the panel body, reduce the equipment process of both simultaneously, effectively reduced assembly cost, owing to got rid of the faying surface of both moreover, consequently can avoid appearing the oil seepage risk, and then improve the life of rear axle. In addition, as the bridge pipe is connected with the bridge cladding through the flange, compared with a plug welding process, the assembly efficiency of the rear axle can be improved, and the manufacturability is relatively stable.

Description

Integrated bridge shell type electric automobile rear axle and electric automobile

Technical Field

The utility model relates to the technical field of vehicles, in particular to an integrated axle housing type electric automobile rear axle and an electric automobile.

Background

The existing electric automobile rear axle is mainly divided into a split rear axle and an integral rear axle, the two types of gearboxes and axle cladding are two separated parts, then the two parts are processed through a joint surface, and after the sealing glue is smeared, the two parts are connected together through bolts.

The rear axle can rise in the use temperature, has for a long time led to sealant ageing inefficacy to appear the problem of oil seepage, after long-time use, can lead to the gearbox to damage owing to the loss of lubricating oil.

Therefore, how to improve the service life of the rear axle of the electric automobile is a technical problem that needs to be solved by those skilled in the art at present. Meanwhile, the severe requirement of the electric automobile on light weight is solved.

Disclosure of Invention

The utility model aims to provide an integrated axle housing type electric automobile rear axle, which can effectively prolong the service life of the rear axle and accelerate the efficiency of an assembly link. Another object is to provide an electric vehicle comprising an integral shell and axle type electric vehicle rear axle.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an integral axle housing type electric vehicle rear axle, comprising: the gearbox comprises a gearbox shell, a gearbox cover and a motor flange, wherein the gearbox shell, the gearbox cover and the motor flange are integrally formed, the gearbox shell and the bridge cover are integrally formed, the bridge Bao Ketao is arranged on the bridge pipe, a first flange is arranged on the periphery of the bridge cover, a second flange is arranged on the periphery of the bridge pipe, the first flange and the second flange are connected in a penetrating mode through fasteners, and the gearbox cover and the motor flange are integrally formed and detachably connected to the gearbox shell.

Preferably, the bridge envelope and the bridge tube are an interference connection.

Preferably, a limiting protrusion is arranged in the bridge cladding, and the limiting protrusion is used for limiting the axial length of the bridge pipe extending into the bridge cladding.

Preferably, the transmission housing and the axle housing are integrally cast in a molded-on construction.

Preferably, the fastener is a fastening bolt.

Preferably, the gearbox cover and motor flange integrated structure is connected with the gearbox housing through connecting bolts.

An electric vehicle comprising an integral shell and bridge electric vehicle rear axle as described in any one of the preceding claims.

Compared with the prior art, the technical scheme has the following advantages:

the utility model provides an integrated bridge shell type electric automobile rear axle and an electric automobile, comprising: the gearbox comprises a gearbox shell, a gearbox case cover, a motor flange integrated structure, a bridge cladding and a bridge tube, wherein the gearbox shell and the bridge cladding are of an integrated structure, the bridge cladding is sleeved on the bridge tube, a first flange is arranged on the periphery of the bridge cladding, a second flange is arranged on the periphery of the bridge tube, the first flange and the second flange are connected in a penetrating mode through fasteners, and the gearbox case cover and the motor flange integrated structure are detachably connected to the gearbox shell. Through designing gearbox housing and bridge cladding as integrated into one piece formula structure, can reduce the weight that both combine the panel body, reduce the equipment process of both simultaneously, effectively reduced assembly cost, owing to got rid of the faying surface of both moreover, consequently can avoid appearing the oil seepage risk, and then improve the life of rear axle. In addition, as the bridge pipe is connected with the bridge cladding through the flange, compared with a plug welding process, the assembly efficiency of the rear axle can be improved, and the manufacturability is relatively stable.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of an integral axle housing electric vehicle rear axle;

fig. 2 is a schematic partial structural view of a rear axle of an integrated axle housing type electric vehicle.

The reference numerals are as follows:

10 is a gearbox housing;

20 is a bridge envelope, 21 is a first flange, and 22 is a limiting protrusion;

30 is a bridge pipe and 31 is a second flange;

40 is a fastening bolt;

50 is an integrated structure of a gearbox cover and a motor flange;

and 60 is a connecting bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, fig. 1 is a cross-sectional view of an integral axle housing type electric vehicle rear axle, and fig. 2 is a partial structural schematic view of the integral axle housing type electric vehicle rear axle.

The embodiment of the utility model provides an integrated bridge shell type electric automobile rear axle, which comprises the following components: the gearbox housing 10, gearbox case lid and motor flange integrated into one piece structure 50, axle cladding 20 and axle pipe 30, gearbox housing 10 and axle cladding 20 are integrated into one piece structure, for example gearbox case lid and motor flange integrated into one piece structure 50 can be integrated into one piece cast into one piece structure, gearbox housing 10 and axle cladding 20 are integrated into one piece cast into one piece structure, axle cladding 20 cover is established on axle pipe 30, the periphery of axle cladding 20 is equipped with first flange 21, the periphery of axle pipe 30 is equipped with second flange 31, first flange 21 and second flange 31 pass through the fastener cross-under, gearbox case lid and motor flange integrated into one piece structure 50 can dismantle and connect in gearbox housing 10, wherein gearbox case lid and gearbox housing 10 can dismantle and be connected, the motor can dismantle with motor flange and be connected. Through design gearbox case lid and motor flange as integrated into one piece type structure, through design into integrated into one piece type structure gearbox housing 10 and bridge cladding 20, can reduce the weight that both combine the panel body, reduce both's equipment process simultaneously, effectively reduced assembly cost, owing to got rid of the faying face of both moreover, consequently can avoid appearing the oil seepage risk, and then improve the life of rear axle. In addition, as the bridge tube 30 and the bridge cladding 20 are connected through the flange, compared with the traditional plug welding process, the assembly efficiency of the rear axle can be improved, and the manufacturability is relatively stable.

In some embodiments, the bridge envelope 20 and the bridge tube 30 are first connected by interference, and then fastened by fastening the first flange 21 and the second flange 31 through fasteners. As shown in fig. 1, a bridge casing 20 is integrally formed at both left and right sides of a lower end of a transmission housing 10, and a bridge tube 30 includes a left bridge tube connected to the left bridge casing 20 and a right bridge tube connected to the right bridge casing 20. Wherein the fastening members are fastening bolts 40, and the number of the fastening bolts 40 is a plurality. In order to improve the accuracy of the connection position between the bridge cladding 20 and the bridge tube 30, the bridge cladding 20 is internally provided with a limiting protrusion 22, the limiting protrusion 22 can limit the axial length of the bridge tube 30 extending into the bridge cladding 20, and when the bridge cladding 20 is assembled, after the limiting protrusion 22 in the bridge cladding 20 contacts with the end part of the bridge tube 30, the bridge cladding 20 and the bridge tube 30 are assembled in place, so that the assembly precision and the assembly efficiency of the bridge cladding 20 and the bridge tube 30 can be effectively improved.

In some embodiments, as shown in fig. 1 and 2, the upper right end gearbox cover and motor flange integrated form 50 of the gearbox housing 10 may be connected to the gearbox housing 10 by a plurality of connecting bolts 60, the number of connecting bolts 60 being a plurality of gearbox cover and motor flange integrated form 50. By designing the gearbox cover and motor flange integrally formed structure 50 and gearbox housing 10 as a split structure, the user's choice of motor can be facilitated and the cost of developing the mold reduced.

The utility model also provides an electric automobile, comprising the integrated shell-and-bridge electric automobile rear axle provided by any one of the embodiments, and the beneficial effects of the electric automobile are achieved by referring to the integrated shell-and-bridge electric automobile rear axle, and the description is omitted here.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The integral shell type electric automobile rear axle and the electric automobile provided by the utility model are described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (7)

1. An integrative axle housing formula electric automobile rear axle, characterized in that includes: gearbox casing (10), gearbox case lid and motor flange integrated into one piece formula structure (50), bridge cladding (20) and axle pipe (30), gearbox casing (10) and bridge cladding (20) are integrated into one piece formula structure, bridge cladding (20) cover is established on axle pipe (30), the periphery of bridge cladding (20) is equipped with first flange (21), the periphery of axle pipe (30) is equipped with second flange (31), first flange (21) with second flange (31) pass through the fastener cross-under, gearbox case lid and motor flange integrated into one piece formula structure (50) can dismantle connect in gearbox casing (10).

2. The integral shell and tube electric vehicle rear axle of claim 1, characterized in that the axle housing (20) and the axle tube (30) are an interference connection.

3. The integrated shell and tube electric vehicle rear axle according to claim 1, characterized in that a limiting protrusion (22) is arranged in the axle housing (20), and the limiting protrusion (22) is used for limiting the axial length of the axle tube (30) extending into the axle housing (20).

4. The integral axle-and-shell electric vehicle rear axle according to claim 1, characterized in that the gearbox housing (10) and the axle housing (20) are of integrally cast-in-place construction.

5. The integral shell and axle electric vehicle rear axle of claim 1, characterized in that the fastener is a fastening bolt (40).

6. The integral axle housing electric vehicle rear axle of claim 1, characterized in that the gearbox cover and motor flange integral structure (50) is connected with the gearbox housing (10) by means of connecting bolts (60).

7. An electric vehicle characterized by comprising the integral shell-and-axle electric vehicle rear axle according to any one of claims 1 to 6.