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Differential device

A differential device and differential technology, applied in the direction of differential transmission, transmission, transmission box, etc., can solve the problems of difficulty in obtaining the rigidity balance and insufficient rigidity of the differential housing, so as to improve the rigidity and avoid the The effect of stress concentration

Pending Publication Date: 2020-09-01
MUSA PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the rigidity of the non-joint part is lower than that of the joint part, the rigidity against the thrust load transmitted from the drive gear to the ring gear (that is, the load in the tilting direction received by the ring gear) may be insufficient during transmission. There are problems such as difficulty in obtaining a rigid balance of the differential case against the tilting of the ring gear

Method used

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Embodiment Construction

[0030] Embodiments of the present invention will be described below with reference to the drawings.

[0031] exist figure 1 Among them, a differential device 10 for distributing and transmitting power from an unillustrated power source (for example, a vehicle-mounted engine) to left and right axles 11 and 12 is accommodated in a transmission 9 of a vehicle (for example, an automobile). The differential device 10 includes a differential case 8 and a differential mechanism 20 built in the differential case 8 .

[0032] The differential case 8 includes: a hollow case main body 8c formed in a substantially spherical shape and housing the differential mechanism 20 therein; first and second bearing bosses 8b1, 8b2, which lined up on an axis X1 and integrally connected to the right and left sides of the case main body 8c; The first axis X1 extends in the circumferential direction with the center as the center. Furthermore, the first and second bearing bosses 8b1, 8b2 are rotatably...

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PUM

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Abstract

Provided is a differential device in which a case body of a differential case that is rotatable about a first axis is provided with operation windows. When viewed in a projected surface orthogonal tothe first axis (X1), specific coupling portions (B1, B4, B5, B8) that are the closest to the operation windows H among coupling portions (B1 to B8) between a flange part (8f) of the differential case(8) and a ring gear (R) are positioned on the outside of an inner end portion (Hie) of the operation windows H in a direction along a third axis (X3) orthogonal to the first axis and a pinion axis (second axis X2), and the operation windows (H) are positioned on the outer side in the direction along the third axis than virtual straight lines (L1, L2) connecting the specific coupling portions (B1,B4, B5, B8) and the first axis. In this way, the rigidity strength of the differential case is increased such that, when the ring gear that is coupled with the flange part at the outer periphery of the case body and receives a thrust load due to meshing with a drive gear is subjected to the thrust load, gear falling can be suppressed effectively and stress concentration around the operation windows of the case body can be avoided effectively.

Description

technical field [0001] The present invention relates to a differential device, in particular to a differential device having a structure including: a differential case having a hollow case main body and a The flange part, the differential case can rotate around the first axis; the differential mechanism, which is accommodated in the case main body; A drive gear on the source meshes to transmit power from the drive gear to the differential case, and the ring gear has a tooth portion that bears a thrust load in a direction along the first axis by meshing with the drive gear. Background technique [0002] This differential device is known as disclosed in Patent Document 1 below. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 4902727 Contents of the invention [0006] The problem to be solved by the invention [0007] In the differential case of the differential device disclosed in Patent Document 1, two large work ...

Claims

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Application Information

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IPC IPC(8): F16H48/40F16H48/08F16H57/03
CPCF16H48/08F16H48/40F16H2048/385
Inventor 小田裕久
Owner MUSA PRECISION IND CO LTD