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Differential device

A technology for differentials and differential cases, applied in the direction of differential transmissions, transmissions, mechanical equipment, etc., which can solve problems that are difficult to eliminate, wear and tear, and impede durability improvement

Pending Publication Date: 2021-04-27
AISIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As long as the driving force transmitted from the pinion gear to the side gear changes, it is difficult to eliminate the generation of such vibration, and if the amplitude of the vibration is large, the rattling sound and the like will also become louder, and there is a possibility that the noise from the differential device will increase.
In addition, if the side gears are in a oscillating state, there is also a possibility of wear due to one-end contact, which hinders the improvement of durability.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0025] Below, use figure 1 This first embodiment will be described through FIG. 4 . figure 1 is a schematic diagram showing the drive system of the vehicle according to the present embodiment, figure 2 is a sectional view showing the differential device according to the present embodiment, image 3 is an axial view of a part of the differential case main body according to this embodiment viewed from the axial direction of the propeller shaft, Figure 4A is a schematic diagram showing the number of teeth of the first to fourth pinion gears and the second side gear according to the first embodiment, Figure 4B It is a figure explaining the vibration amplitude of the 2nd side gear with respect to a 2nd differential case concerning 1st Embodiment.

[0026] [Structure of vehicle drive system]

[0027] First, use figure 1 The configuration of the drive system of the vehicle 100 mounted on the differential device 1 according to the first embodiment will be described. Such as ...

no. 2 approach ＞

[0063] Next, regarding the second embodiment with partial changes to the above-mentioned first embodiment, use Figure 5 to explain. Figure 5 It is a schematic diagram showing the number of teeth of the first to fourth pinion gears and the second side gear according to the second embodiment. In addition, in the description of the second embodiment, the same reference numerals are attached to the same parts as those of the first embodiment described above, and description thereof will be omitted.

[0064] In the differential device 1 according to the second embodiment, the second side gear 52 is changed from that of the above-mentioned first embodiment. 2 number of teeth. That is, if Figure 5 As shown, likewise the second side gear 52 2 The number of teeth is 4N+2, which is an even number that is not a multiple of 4, and specifically the number of teeth is composed of 18. In addition, the first to fourth pinions 31 2 、32 2 、33 2 、34 2 The number of teeth is an odd nu...

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Abstract

A differential device according to the present invention comprises: a differential case; a plurality of pinion shafts that are supported by the differential case and that are disposed on a first axis and a second axis orthogonal to the first axis; a first pinion gear (311) and second pinion gear (321) disposed on the first axis, and a third pinion gear (331) and fourth pinion gear (341) disposed on the second axis, all respectively rotatably supported by the pinion shafts; and a first side gear and a second side gear (521) that mesh with the first through fourth pinion gears (311, 321, 331, 341) and are preloaded toward the first through fourth pinion gears (311, 321, 331, 341). The number of teeth on the first side gear and the second side gear (521) is 4N + 2, where N is an integer.

Description

technical field [0001] The present technology relates to a differential device including a first side gear and a second side gear respectively meshing with first to fourth pinion gears. Background technique [0002] Conventionally, vehicles have been equipped with a differential device that absorbs a rotational speed difference between left and right wheels or front and rear wheels and transmits the rotation. Generally, the differential device includes: a plurality of pinion shafts supported by the differential case; a plurality of pinion gears rotatably supported by the pinion shafts; and two side gears meshing with the pinion gears, and has The above-mentioned side gears are respectively drive-connected to drive shafts such as propeller shafts. [0003] In addition, it has also been proposed that in the differential device, disc springs are arranged between the differential case and the side gears, and the pressure is applied so as to urge the side gears to the pinion gea...

Claims

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Application Information

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IPC IPC(8): F16H48/08
CPCF16H48/08F16H48/38F16H57/0006F16H2048/087F16H2048/385
Inventor 小泽诚也
Owner AISIN CORP
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