A connection structure between axle gear and housing of a differential

Abstract

The utility model provides a connection structure between a half-axle gear and a housing on a differential, and belongs to the technical field of differentials. The differential includes a housing, a half-axle mounting hole and a gasket, a step surface is provided between the inner cavity of the housing and the half-axle mounting hole, the gasket is located on the step surface, and the connection structure between the half-axle gear and the housing also includes a plurality of oil guide grooves provided on the step surface, the oil guide grooves are radially arranged on the step surface; an annular oil groove is provided on the outer side of the step surface, the outer side of the oil guide groove is communicated with the annular oil groove, and the inner side of the oil guide groove is communicated with the half-axle mounting hole. The utility model has the advantages of reasonable design and long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of differentials and relates to a connection structure between a half-axle gear and a housing of a differential. Background Art

[0002] The differential is in a "semi-oil immersed" state. Under static conditions, 65% to 70% of the differential housing is in an oil immersed state. The rotation of the differential housing and the movement of the internal components of the differential housing realize the circulation and full coverage of the lubricating oil. A gasket is arranged between the half-shaft gear and the inner cavity of the housing. In the prior art, the relative movement between the gasket and the half-shaft gear, and between the gasket and the housing is utilized to realize the mutual communication of the lubricating oil between the inner cavity of the differential housing and the mounting hole of the half-shaft gear shaft. However, this method has a low oil flow efficiency between the inner cavity of the differential housing and the mounting hole of the half-shaft gear shaft, and the movement of the gasket is relatively irregular, which makes it easy to cause high temperature in the mounting hole of the half-shaft gear shaft under the gasket, and it is also easy to form high temperature between the gasket and the housing, thereby causing problems such as increased wear and shortened service life. Utility Model Content

[0003] The purpose of the utility model is to provide a connection structure between a half-shaft gear and a housing of a differential in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is to optimize the structure of the differential housing.

[0004] The purpose of the utility model can be achieved by the following technical solutions: a connection structure between a half-shaft gear and a housing on a differential, the differential comprising a housing, a half-shaft mounting hole and a gasket, a step surface is provided between the inner cavity of the housing and the half-shaft mounting hole, the gasket is located on the step surface, and the connection structure between the half-shaft gear and the housing further comprises a plurality of oil guide grooves provided on the step surface, the oil guide grooves being radially arranged on the step surface;

[0005] The outer side of the step surface is provided with an annular oil groove, the outer side of the oil guide groove is communicated with the annular oil groove, and the inner side of the oil guide groove is communicated with the half-axle mounting hole.

[0006] The step surface is the abutment surface of the gasket on the shell, and the gasket also abuts against the side of the half-shaft gear close to the half-shaft mounting hole. In this solution, three oil guide grooves are evenly arranged circumferentially on the step surface, and the oil guide grooves are communicated with the annular oil grooves, and the oil guide grooves are also communicated with the half-shaft mounting holes. When the gasket rotates relative to the shell, the gasket rotates relative to the half-shaft gear, and the shell rotates in an oil-immersed environment, the lubricating oil between the half-shaft mounting hole and the inner cavity of the shell can be communicated under the action of centrifugal force, which greatly reduces the heat collection of the gasket and the temperature difference on both sides, optimizes the lubrication and cooling environment of related components, and is beneficial to the stable operation and extended service life of the differential. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the differential housing with the gasket installed.

[0008] Figure 2 This is a plan view of the differential case with the gasket removed.

[0009] Figure 3 This is a three-dimensional view of the differential housing after removing the gasket.

[0010] Figure 4 is a cross-sectional view of the differential housing.

[0011] In the figure, 1, housing; 2, half-shaft mounting hole; 3, gasket; 4, step surface; 5, oil guide groove; 6, annular oil groove. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1-Figure 4 As shown, the connection structure between the upper half-shaft gear and the housing of the differential, the differential includes a housing 1, a half-shaft mounting hole 2 and a gasket 3, a step surface 4 is provided between the inner cavity of the housing 1 and the half-shaft mounting hole 2, the gasket 3 is located on the step surface 4, and the connection structure between the half-shaft gear and the housing 1 also includes a plurality of oil guide grooves 5 opened on the step surface 4, and the oil guide grooves 5 are radially arranged on the step surface 4;

[0014] An annular oil groove 6 is provided on the outer side of the step surface 4 , the outer side of the oil guide groove 5 is communicated with the annular oil groove 6 , and the inner side of the oil guide groove 5 is communicated with the half-axle mounting hole 2 .

[0015] The step surface 4 is the abutment surface of the gasket 3 on the housing 1, and the gasket 3 also abuts against the side of the half-shaft gear close to the half-shaft mounting hole 2. In this solution, three oil guide grooves 5 are evenly arranged on the step surface 4 in the circumferential direction, and the oil guide grooves 5 are communicated with the annular oil grooves 6. The oil guide grooves 5 are also communicated with the half-shaft mounting hole 2. When the gasket 3 rotates relative to the housing 1, the gasket 3 rotates relative to the half-shaft gear, and the housing 1 rotates in an oil-immersed environment, the lubricating oil between the half-shaft mounting hole 2 and the inner cavity of the housing 1 can be communicated under the action of centrifugal force, which greatly reduces the heat collection of the gasket 3 and the temperature difference on both sides, optimizes the lubrication and cooling environment of related components, and is beneficial to the stable operation and extended service life of the differential.

[0016] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A connection structure between a half-axle gear and a housing on a differential, the differential comprising a housing (1), a half-axle mounting hole (2) and a gasket (3), a step surface (4) being provided between the inner cavity of the housing (1) and the half-axle mounting hole (2), the gasket (3) being located on the step surface (4), characterized in that: The connection structure between the half-shaft gear and the housing (1) further comprises a plurality of oil guide grooves (5) formed on the step surface (4), wherein the oil guide grooves (5) are radially arranged on the step surface (4); The outer side of the step surface (4) is provided with an annular oil groove (6), the outer side of the oil guide groove (5) is communicated with the annular oil groove (6), and the inner side of the oil guide groove (5) is communicated with the half-axle mounting hole (2).

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