CN216009444U

CN216009444U - Differential case with inner conical surface structure

Info

Publication number: CN216009444U
Application number: CN202122528770.1U
Authority: CN
Inventors: 莫江涛; 刘晓华; 时超; 段国凯
Original assignee: Zhengzhou Jingyida Auto Parts Co Ltd
Current assignee: Zhengzhou Jingyida Auto Parts Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-03-11
Anticipated expiration: 2031-10-20

Abstract

The utility model provides an interior conical surface structure differential mechanism shell which the outer tip internal diameter in left end hole is a1, and the interior tip internal diameter in its left end hole is a2, and a2>a1, and the outer tip in left end hole, the region between the interior tip are coniform, and the outer tip internal diameter in its right-hand member hole is a4, and the interior tip internal diameter in its right-hand member hole is a3, and a3>a4, and the outer tip in right-hand member hole, the region between the interior tip are coniform, equipartition spiral oil groove on the inner wall in its left end hole, its right-hand member hole. Compared with the prior art, the utility model has the beneficial effects of, the utility model discloses being coniform hole with left end hole, right-hand member hole, utilizing the centrifugal force that produces when the differential mechanism shell is rotatory to make lubricating oil centering portion flow, the oil stream is more concentrated, and the central part is lubricated better.

Description

Differential case with inner conical surface structure

Technical Field

The utility model relates to an automobile drive axle main reducer relates to a differential mechanism shell of structure of interior conical surface in area.

Background

The differential shell internal structure of the existing middle-rear axle main reducer is generally designed to be a cylindrical surface or a stepped cylindrical surface, referring to fig. 1, a left end hole 11 and a right end hole 12 of a differential shell 10 are cylindrical holes, and spiral oil grooves are uniformly distributed on the hole walls of the left end hole 11 and the right end hole 12.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: the region in the differential case which needs to be lubricated most is the central part, and the spiral oil grooves distributed on the wall of the cylindrical hole cannot generate power flowing to the central part, so that the central part (the half axle gear region) is not well lubricated.

The technical scheme of the utility model specifically does:

the differential case with the inner conical surface structure has the inner diameter of the outer end part of a left end hole of a1, the inner diameter of the inner end part of the left end hole of a2, a2> a1, the area between the outer end part and the inner end part of the left end hole is conical, the inner diameter of the outer end part of a right end hole of the left end hole is a4, the inner diameter of the inner end part of the right end hole of the left end hole is a3, a3> a4, the area between the outer end part and the inner end part of the right end hole of the left end hole is conical, and spiral oil grooves are distributed on the inner walls of the left end hole and the right end hole of the right end hole of the left end hole of the right end hole of the right end hole of the right end hole of the right end.

a2= a3，a1= a4。

The taper angle of the conical part of the left end hole and the right end hole is between 1 degree and 20 degrees.

The spiral oil groove is a single spiral.

The spiral oil groove is a symmetrical double helix.

Compared with the prior art, the technical effect of the utility model is that, the utility model discloses be coniform hole with left end hole, right-hand member hole, the centrifugal force (or be called motion inertia) that produces when utilizing the differential mechanism shell to rotate makes lubricating oil flow to central part (side gear region), and the oil stream is more concentrated, and the central part is lubricated better.

Drawings

Fig. 1 is a schematic diagram of the prior art.

Fig. 2 is a schematic diagram of the present invention.

Fig. 3 is an enlarged schematic diagram (one) of the right end of the present invention.

Fig. 4 is an enlarged schematic diagram of the right end of the present invention (ii).

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments thereof.

Referring to fig. 2 to 4, in the differential case 10 of the inner conical surface structure, the inner diameter of the outer end portion of the left end hole 11 is a1, the inner diameter of the inner end portion of the left end hole 11 is a2, a2> a1, the area between the outer end portion and the inner end portion of the left end hole 11 is conical (or truncated cone-shaped, see reference numeral 111), and the length of the conical area is b 1.

The inner diameter of the outer end part of the right end hole 12 is a4, the inner diameter of the inner end part of the right end hole 12 is a3, a3> a4, the area between the outer end part and the inner end part of the right end hole 12 is conical (or truncated cone-shaped, see reference numeral 121), and the length of the conical area is b 2.

Spiral oil grooves 13 are uniformly distributed on the inner walls of the left end hole 11 and the right end hole 12.

For ease of processing, a2= a3, a1= a 4.

The taper angle of the conical part of the left end hole 11 and the right end hole 12 is between 1 degree and 20 degrees.

Referring to fig. 3, the spiral oil groove 13 is a single spiral.

Referring to fig. 4, the spiral oil groove 13 is a symmetrical double spiral.

The working principle is as follows:

after the cone is arranged, firstly, the centrifugal force generated by the rotation of the differential shell is increased along with the increase of the radius under the condition of the same mass unit and the same angular speed; secondly, the inner cylindrical section has a large diameter and a large volume, and a pumping effect is generated when the differential housing rotates, so that a pressure difference from the outer side to the inner side is generated, and the lubricating oil flows to the inner side, so that the lubricating oil flows to the side gear.

See the prior art for additional details.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. A differential case with an inner conical surface structure is characterized in that the inner diameter of the outer end part of a left end hole (11) is a1, and the inner diameter of the inner end part of the left end hole (11) is a 2: a2 is more than a1, the area between the outer end and the inner end of the left end hole (11) is conical, the inner diameter of the outer end of the right end hole (12) is a4, the inner diameter of the inner end of the right end hole (12) is a3, a3 is more than a4, the area between the outer end and the inner end of the right end hole (12) is conical, and spiral oil grooves (13) are distributed on the inner walls of the left end hole (11) and the right end hole (12).

2. The internally tapered differential carrier housing of claim 1, wherein: a2= a3, a1= a 4.

3. The internally tapered differential carrier housing of claim 1, wherein: the taper angle of the conical part of the left end hole (11) and the right end hole (12) is between 1 degree and 20 degrees.

4. The internally tapered differential carrier housing of claim 1, wherein: the spiral oil groove (13) is a single spiral.

5. The internally tapered differential carrier housing of claim 1, wherein: the spiral oil groove (13) is a symmetrical double spiral.