CN219806671U - Rear axle housing assembly and car - Google Patents

Abstract

The utility model discloses a rear axle housing assembly, which is used for a vehicle body and comprises an upper housing and a lower housing; the upper shell and the lower shell are of a stamping structure, and are welded to form a shell; the casing includes connecting portion and bridge package, and connecting portion is located the both sides of bridge package, and the bridge package is used for assembling the main reducer assembly of automobile body. The utility model realizes the increase of the bearing load of the rear axle housing assembly, reduces the mass of the rear axle housing assembly and improves the reliability of the rear axle housing assembly. The utility model also discloses an automobile.

Description

Rear axle housing assembly and car

Technical Field

The utility model relates to the field of automobile manufacturing, in particular to a rear axle housing assembly and an automobile.

Background

The rear axle housing assembly serves as one of the primary components of the vehicle chassis, bears the vehicle load, transmits forces on the wheels to the suspension and frame, and provides mounting locations for components such as the final drive assembly, axle shaft assembly 304, axle shaft oil seal assembly 303, and brake assembly.

The shell of the rear axle housing assembly bears gravity, traction force, braking force, lateral force, ground counter force and counter moment during operation and is transmitted to the frame and the vehicle body through the suspension. These forces cause the housing to develop greater stresses such as bending, torsional shear, etc., which are more severe when overloaded or traveling at high speeds on poor roads, over acceleration or deceleration, or emergency braking, and are extremely prone to causing bending deformation and breakage of the housing.

Therefore, how to increase the bearing load of the rear axle housing assembly, lighten the mass of the rear axle housing assembly, and improve the reliability of the rear axle housing assembly is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a rear axle housing assembly, which increases the bearing load of the rear axle housing assembly, reduces the mass of the rear axle housing assembly, and improves the reliability of the rear axle housing assembly.

Another object of the present utility model is to provide an automobile having the rear axle housing assembly described above.

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

a rear axle housing assembly for a vehicle body includes an upper housing and a lower housing;

the upper shell and the lower shell are of a stamping structure, and are welded to form a shell;

the casing includes connecting portion and bridge package, and connecting portion is located the both sides of bridge package, and the bridge package is used for assembling the main reducer assembly of automobile body.

Optionally, in the rear axle housing assembly, the connecting portion includes a first portion and a second portion, the two sides of the bridge bag are both provided with the second portion, and one end of the second portion, which is far away from the bridge bag, is connected with the first portion through the transition section;

the first part is circular in cross section, the second part is square in cross section, and the diameter of the first part is the same as the side length of the second part.

Optionally, in the rear axle housing assembly, a longitudinal weld is formed on a connecting surface of the upper housing and the lower housing; and/or the number of the groups of groups,

the rear axle housing assembly further comprises a half-shaft sleeve flange, the half-shaft sleeve flange is used for assembling the half-shaft oil seal assembly and the half-shaft assembly of the vehicle body, the half-shaft sleeve flange is arranged at the end part of the housing, and a circumferential weld used for welding is arranged on the connecting surface of the half-shaft sleeve flange and the housing.

Optionally, in the rear axle housing assembly described above, the longitudinal weld and/or the girth weld includes a weld groove.

Optionally, in the rear axle housing assembly, the axle sleeve flange includes a raised ring and an oil seal lip, and an inner diameter of the raised ring is smaller than an inner diameter of the oil seal lip.

Optionally, in the rear axle housing assembly, a spring seat plate is arranged on the lower housing and is used for assembling a leaf spring assembly of the vehicle body; and/or the number of the groups of groups,

the rear axle housing assembly further comprises a rear cover, and the rear cover is arranged on the axle package.

Optionally, in the rear axle housing assembly, the rear axle housing further comprises a connecting piece, and the housing is connected with the leaf spring assembly through the connecting piece;

the connecting surface of the upper shell and the connecting piece is provided with a collision stopping block.

Optionally, in the rear axle housing assembly, stamping flanges are provided on two sides of the anti-collision block to cooperate with the connecting piece.

Optionally, in the rear axle housing assembly, the upper housing is provided with a vent hole, the vent hole is used for installing a vent plug of the vehicle body, and a vent hole protecting cover is arranged on the vent hole.

Optionally, in the rear axle housing assembly, the lower housing is provided with an oil drain plug, and an end of the oil drain plug, which is close to the axle package, is provided with an inclined surface.

In the rear axle housing assembly provided by the utility model, the upper housing and the lower housing are of a stamping structure, and are manufactured by using a stamping process, and the housings are formed by welding the upper housing and the lower housing. The shell formed by stamping and welding has the advantages of high strength, good rigidity and light weight, and has good structural manufacturability, thereby being convenient for adjustment, maintenance and repair. Through stamping and welding, the bearing load of the rear axle housing assembly is increased, the quality of the rear axle housing assembly is reduced, and the reliability of the rear axle housing assembly is improved.

An automobile comprising a rear axle housing assembly as defined in any one of the preceding claims.

The automobile provided by the utility model has all the technical effects of the rear axle housing assembly because of the rear axle housing assembly, and the description is omitted herein.

Drawings

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

FIG. 1 is a schematic structural view of a rear axle housing assembly according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a first portion of an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a second portion disclosed in an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a half shaft sleeve flange according to an embodiment of the present utility model;

FIG. 5 is an assembly view of a half shaft oil seal assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a structure of a bump stop according to an embodiment of the present utility model;

FIG. 7 is an assembly view of a leaf spring assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a drain cock according to an embodiment of the present utility model;

wherein:

100 is an upper housing; 101 is a first portion; 102 is a second portion; 103 is a bridge bag;

200 is a lower housing;

300 is a half shaft sleeve flange; 301 is an oil seal lip; 302 is a raised ring; 303 is a half shaft oil seal assembly; 304 is a half axle assembly;

401 is a spring seat plate; 402, touching the block; 4021 is a stamped flange; 403 is a vent; 404 is an oil drain plug screw; 405 is a rear cover;

501 is a longitudinal weld; 502 is a girth weld;

601 is a connecting piece; 602 is a leaf spring assembly.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 8 in the embodiments of the present utility model, and it is obvious that the described embodiments 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 novel efforts, are intended to fall within the scope of this utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top surface", "bottom surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limitations of the present utility model. 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.

As shown in fig. 1, the rear axle housing assembly disclosed in the present utility model is used for a vehicle body, and includes an upper housing 100 and a lower housing 200; the upper and lower cases 100 and 200 are of a punched structure, and the upper and lower cases 100 and 200 are welded to form a case; the casing includes connecting portion and bridge package 103, and connecting portion is located the both sides of bridge package 103, and bridge package 103 is used for the main reducer assembly of assembly automobile body.

In the rear axle housing assembly provided by the utility model, the upper housing 100 and the lower housing 200 are of a stamping structure, and are manufactured by using a stamping process, and the housings are formed by welding the upper housing 100 and the lower housing 200. The shell formed by stamping and welding has the advantages of high strength, good rigidity and light weight, and has good structural manufacturability, thereby being convenient for adjustment, maintenance and repair. Through stamping and welding, the bearing load of the rear axle housing assembly is increased, the quality of the rear axle housing assembly is reduced, and the reliability of the rear axle housing assembly is improved.

In one embodiment of the present utility model, the upper and lower cases 100 and 200 are manufactured using a stamping process, and then the upper and lower cases 100 and 200 are welded together by a metal-inert gas (MAG) welding to form the cases.

In order to optimize the technical scheme, the connecting part comprises a first part 101 and a second part 102, the second part 102 is arranged on two sides of the bridge bag 103, and one end, far away from the bridge bag 103, of the second part 102 is connected with the first part 101 through a transition section. The cross section of the first portion 101 is set to be circular, the cross section of the second portion 102 is set to be square, and the diameter of the circular shape is the same as the side length of the square.

The diameter of the first part 101 is the same as the side length of the second part 102, so that part forming is facilitated, stamping defects are avoided, reliability of the rear axle housing assembly is improved, and excessive height or insufficient width caused by concave welding seams is not easy to occur when the transition section is subjected to stamping welding, so that welding quality is ensured.

As shown in fig. 6, a longitudinal welding seam 501 is formed on the connecting surface of the upper casing 100 and the lower casing 200, the direction of the longitudinal welding seam 501 is parallel to the axis of the casing, and the upper casing 100 and the lower casing 200 are welded into the casing through the longitudinal welding seam 501 so as to bear the load of an automobile, and the assembly positions of parts such as a main reducer assembly, a ventilation plug and the like are provided.

Further, two ends of the shell are provided with a half-shaft sleeve flange 300 for connecting the brake and providing mounting positions of the half-shaft oil seal assembly 303 and the half-shaft assembly 304, a circumferential weld 502 is formed on a connecting surface of the half-shaft sleeve flange 300 and the shell, and the half-shaft sleeve flange 300 and the shell are welded through the circumferential weld 502. To increase the weld fusion depth, weld grooves may be provided on longitudinal weld 501 and circumferential weld 502.

The axle sleeve flange 300 is machined after forging, and is provided with a protruding circular ring 302, wherein the inner diameter of the protruding circular ring 302 is smaller than the inner diameter of the oil seal lip 301, so that in the process of assembling the axle assembly 304, if the axle assembly 304 is askew when entering the rear axle housing assembly, the protruding circular ring 302 can support the axle assembly 304, and the axle assembly 304 is prevented from scraping the oil seal lip 301 in the process of assembling, so that the oil seal lip 301 is protected. And be provided with the through-hole on the protruding ring 302, the existence of through-hole is convenient for gear oil backward flow, avoids gear oil to pile up the risk that causes the oil blanket to leak oil. The axle shaft oil seal assembly 303 is press fit into the axle sleeve flange 300 and then the axle shaft assembly 304 is assembled.

To assemble the leaf spring assembly 602 of the vehicle body, as shown in fig. 7, a spring plate 401 is provided on the lower case 200 to be engaged with the leaf spring assembly 602. As shown in fig. 1, the rear axle housing assembly also includes a rear cover 405 to protect the axle package 103.

Further, to fix the position of the leaf spring assembly 602, a connector 601 is provided, and the housing is connected to the leaf spring assembly 602 through the connector 601. The leaf spring assembly 602 is fixed on the spring plate 401 through the leaf spring clamp plate weldment, the connecting piece 601 is assembled on the shell, the nut is screwed down, and the connecting piece 601 is fixed on the leaf spring clamp plate weldment, so that the leaf spring assembly 602 can be fixed on the rear axle housing assembly. The connecting member 601 includes a pin, a hexagonal bolt, a U-shaped bolt, etc., and in production, a U-shaped bolt is often used as the connecting member 601.

The connecting piece 601 is used for connecting a rear axle housing assembly and a leaf spring assembly 602, and the anti-collision block 402 is arranged on the connecting surface of the upper housing 100 and the connecting piece 601, and the anti-collision block 402 can prevent the vehicle frame from directly colliding with the housing. The anti-collision block 402 is formed by stamping, further, for fixing the position of the connecting piece 601, two sides of the anti-collision block 402 are provided with stamping flanges 4021 matched with the connecting piece 601, and the connecting piece 601 is prevented from being skewed during assembly due to the stamping flanges 4021, so that the connecting piece 601 is installed and limited.

In an embodiment of the present utility model, the upper housing 100 is provided with a vent hole 403 for installing a vent plug, and the vent hole 403 is provided with a vent cover. The vent holes 403 are formed at positions far away from the first part 101, the second part 102 or the transition section of the bridge bag 103 so as to avoid the position where gear oil is severely stirred, and the vent protecting cover is fully welded to the upper shell 100 through the edges, so that the gear oil is more favorably prevented from leaking at the vent plug.

The lower shell 200 is provided with the drain plug 404, one end of the drain plug 404, which is close to the bridge bag 103, is provided with an inclined plane as shown in fig. 8, so that the welding position of the drain plug 404 in the lower shell 200 is reduced as much as possible, the passing of vehicles is not affected, and gear oil can be drained as much as possible during the maintenance of the gear oil. Without the bevel, the distance between the drain plug 404 and the bridge bag 103 increases and the gap between the housing and the ground decreases, and to eliminate this effect, the drain plug 404 needs to be moved upward, possibly causing gear oil residues in the bridge bag 103. One end of the oil drain plug 404 is set to be an inclined plane, so that the position of the oil drain plug 404 can be close to the bridge package 103, and gear oil stored in the shell is easier to drain.

The principles of the present utility model are described in detail below in connection with specific application scenarios:

the upper shell 100 and the lower shell 200 are formed by whole plate stamping, forming and shaping processes, the outer diameter of the circular section of the first part 101 is the same as the side length of the square section of the second part 102, a transition section of smooth transition is arranged between the first part 101 and the second part 102, and a bridge bulge 103 is arranged between the two square sections and is used for assembling the main reducer assembly.

A longitudinal groove is milled on the upper shell 100, a hole is drilled and tapped at the middle part of the left side, and a vent hole 403 for mounting a vent plug is provided; the lower case 200 is punched with mounting holes for mounting the drain plug 404 at the side of the bridge package 103.

In the production of the rear axle housing assembly, the air hole protecting cover is welded to the upper housing 100, the oil drain nut is welded to the lower housing 200, the upper housing 100 and the lower housing 200 are welded together through four longitudinal welds 501, and then the rear cover 405, the half shaft sleeve flange 300, the spring plate 401 and the anti-collision block 402 are welded in sequence.

The utility model also discloses an automobile comprising the rear axle housing assembly. Because the rear axle housing assembly has the above effects, the automobile comprising the rear axle housing assembly has corresponding effects, and the description thereof is omitted.

It should be noted that the rear axle housing assembly and the automobile provided by the utility model can be used in the field of automobile manufacturing or other fields. Other fields are any field other than the field of automobile manufacturing. The foregoing is merely exemplary, and is not intended to limit the application of the present utility model to the field of automobile manufacturing.

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 previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean 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 present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (11)

1. A rear axle housing assembly for a vehicle body, characterized by comprising an upper housing (100) and a lower housing (200);

the upper shell (100) and the lower shell (200) are of stamping structures, and the upper shell (100) and the lower shell (200) are welded to form a shell;

the shell comprises a connecting part and a bridge bag (103), wherein the connecting part is positioned on two sides of the bridge bag (103), and the bridge bag (103) is used for assembling a main reducer assembly of the vehicle body.

2. The rear axle housing assembly as defined in claim 1, wherein the connection portion includes a first portion (101) and a second portion (102), the second portion (102) being provided on both sides of the axle package (103), an end of the second portion (102) remote from the axle package (103) being connected to the first portion (101) through a transition section;

the cross section of the first part (101) is circular, the cross section of the second part (102) is square, and the diameter of the first part (101) is the same as the side length of the second part (102).

3. The rear axle housing assembly of claim 1, wherein a longitudinal weld (501) is formed on a connecting surface of the upper housing (100) and the lower housing (200); and/or the number of the groups of groups,

the rear axle housing assembly further comprises a half-shaft sleeve flange (300), the half-shaft sleeve flange (300) is used for assembling a half-shaft oil seal assembly (303) and a half-shaft assembly (304) of the automobile body, the half-shaft sleeve flange (300) is arranged at the end part of the shell, and a circumferential weld (502) used for welding is arranged on the connecting surface of the half-shaft sleeve flange (300) and the shell.

4. A rear axle housing assembly as defined in claim 3, wherein the longitudinal welds (501) and/or circumferential welds (502) comprise weld grooves.

5. The rear axle housing assembly of claim 3, wherein the axle sleeve flange (300) includes a raised annular ring (302) and an oil seal lip (301), the raised annular ring (302) having an inner diameter that is less than an inner diameter of the oil seal lip (301).

6. The rear axle housing assembly of claim 1, wherein a spring plate (401) is provided on the lower housing (200), the spring plate (401) being used for assembling a leaf spring assembly (602) of the vehicle body; and/or the number of the groups of groups,

the rear axle housing assembly further comprises a rear cover (405), and the rear cover (405) is arranged on the axle package (103).

7. The rear axle housing assembly of claim 6, further comprising a connector (601), said housing being connected to said leaf spring assembly (602) by said connector (601);

a collision stop block (402) is arranged on the connecting surface of the upper shell (100) and the connecting piece (601).

8. The rear axle housing assembly as defined in claim 7, wherein the stop block (402) is provided with stamped flanges (4021) on both sides thereof for mating with the connector (601).

9. The rear axle housing assembly as defined in claim 1, wherein the upper housing (100) is provided with a vent hole (403), the vent hole (403) being used for mounting a vent plug of the vehicle body, and a vent cover being provided on the vent hole (403).

10. The rear axle housing assembly as defined in any one of claims 1-9, wherein the lower housing (200) is provided with a drain plug (404), the drain plug (404) being provided with a bevel at an end thereof adjacent to the axle package (103).

11. An automobile comprising a rear axle housing assembly as claimed in any one of claims 1 to 10.