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Differential device and method of manufacturing the same

A technology of differential gear and differential gear, which is applied in the direction of differential gear, gear, gear parts, etc., to achieve the effect of improving bonding strength, improving efficiency, and preventing splashes from invading into the differential casing.

Inactive Publication Date: 2015-07-01
MUSA PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, when welding the side surface of the flange on the side of the second bearing boss, since the wall thickness of the flange is thinner at the portion of the concave portion, penetration welding is likely to occur in the concave portion, and as a result, the spatter goes to the second bearing boss. 1 The side of the bearing boss is scattered and may adhere to the inner surface of the differential case

Method used

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  • Differential device and method of manufacturing the same
  • Differential device and method of manufacturing the same
  • Differential device and method of manufacturing the same

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Embodiment Construction

[0055] Embodiments of the present invention will be described below with reference to the drawings.

[0056] exist figure 1 Among them, the differential device D is accommodated in the transmission case 1 of the vehicle. This differential device D is composed of a differential case 2 and a differential mechanism 3 housed in the differential case 2 . A first bearing boss 4 and a second bearing boss 5 aligned on the same axis X are integrally formed on the right side and the left side of the differential case 2, and these first and second bearing bosses 4 , 5 are supported on the transmission housing 1 via bearings 6, 6', and support the right axle 7 and the left axle 8.

[0057] The differential mechanism 3 is composed of: a pinion shaft 9 held on the differential case 2 in a manner perpendicular to the axis X; a pair of pinion gears 10 supported by the pinion shaft 9; And a pair of side gears 11 are spline-coupled to the inner ends of the axles 7 and 8 and meshed with the p...

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Abstract

In a differential device and a method of manufacturing it, a press-fit regulation device regulating a press fit depth of the flange and the ring gear is provided in a press-fit portion between the flange and the ring gear, the flange includes thin-walled portions with recessed portions and thick-walled portions without the recessed portions, the thick-walled portions and the ring gear are welded from a second bearing boss side to a predetermined weld depth, and the thin-walled portions and the ring gear are welded from the second bearing boss side to a weld depth shallower than the predetermined weld depth or not welded. Accordingly, the press-fit portion between the flange and the ring gear can be efficiently welded even in a case where work windows of a differential case cut into a side surface of the flange on a first bearing boss side to form the recessed portions.

Description

technical field [0001] The present invention relates to a differential device and a manufacturing method thereof. In the differential device, first and second bearing bosses are integrally formed on one side and the other side of a differential case housing a differential mechanism. , the first and second bearing bosses are arranged on the same axis, and are respectively supported by the transmission case via bearings, and at the side of the differential case that is offset from the center to the second bearing boss side The intermediate portion is integrally formed with an annular flange, and a work piece for inserting the differential mechanism is provided on the peripheral wall of the differential case facing on a diametrical line perpendicular to the axis. For the window, the ring gear is press-fitted to the outer peripheral surface of the flange, and the press-fit parts of the flange and the ring gear are welded on the side of the second bearing boss. Background techniq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H48/40F16H48/08F16H48/38F16H55/17F16H57/023B23K33/00
CPCF16H48/08F16H48/40B23K31/02F16H2048/382B23K2101/008F16H2048/385
Inventor 柳濑阳一
Owner MUSA PRECISION IND CO LTD
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