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Speed change gear device

A technology of speed change gears and gears, which is applied in gear transmissions, transmissions, belts/chains/gears, etc., can solve the problems of large-scale weight of speed change gears, and achieve the effect of reducing load

Inactive Publication Date: 2013-03-13
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the components of the transmission gear unit such as bearings are increased in diameter, other components need to be enlarged accordingly, which may lead to an increase in the size and weight of the entire transmission gear unit.

Method used

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Examples

Experimental program
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no. 1 approach ＞

[0032] In this embodiment, refer to Figure 1 ~ Figure 3The speed reduction device 1 to which the transmission gear device of the present invention is applied will be described. In addition, in image 3 In FIG. 2 , only a part of each gear is shown to show the meshing state of the internal gears 31 , 41 and the external gear 71 . Therefore, it differs from the number of teeth shown as an example in this embodiment. In addition, in the reduction gear transmission 1 in this embodiment, the second member (disk member 50 ) is arranged in a state where relative rotation with respect to the housing H is prevented, and the annular members (first, second annular members 30 , The autorotation of 40) corresponds to the speed change gear device according to the first invention for changing the speed of the revolution component of the ring-shaped member and outputting it.

[0033] (Structure of reduction gear unit 1)

[0034] The speed reduction device 1 is mainly composed of a housin...

no. 2 approach ＞

[0070] refer to Figure 5 ~ Figure 7 The configuration of the second embodiment will be described. In addition, in Figure 7 In FIG. 2 , only a part of each gear is shown to show the meshing state of the internal gears 31 , 41 and the external gear 71 . Here, the configuration of the second embodiment differs from the reduction gear transmission 1 of the first embodiment mainly in the configuration of the transmission mechanism that restricts the rotation of the first and second annular members 30 , 40 . In addition, since other structures are substantially the same as those of the first embodiment, detailed description thereof will be omitted. Hereinafter, only the different points will be described.

[0071] (Structure of reduction gear unit 101)

[0072] The speed reduction device 101 is mainly composed of a housing H, a gear mechanism 110 , an input shaft member 111 , an output shaft member 12 , and a fixed shaft member 113 . The gear mechanism 110 is configured to in...

no. 3 approach ＞

[0082] refer to Figure 8 , 9 The configuration of the third embodiment will be described. Here, the main difference between the structure of the third embodiment and the structure of the first embodiment is that in the first embodiment, the shaft member (gear shaft 70 ) of the reduction gear transmission 1 is used as the output member, while in the present embodiment The second member (disk member 250 ) is used as the output member. In addition, the speed reduction device 201 in this embodiment is arranged in a state in which the shaft member (gear shaft 270 ) cannot be rotated relative to the housing H. 1. The rotation component of the second annular member (30, 40) is output from the second member (disk member 250) and corresponds to the transmission gear device according to the second invention. In addition, since other structures are substantially the same as those of the first embodiment or the second embodiment, detailed description thereof will be omitted. Hereinaf...

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PUM

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Abstract

Disclosed is a speed change gear device that is provided with a configuration different from conventional configurations, and that can obtain a high gear ratio and can increase the strength of the device as a whole. The speed change gear device (1) is provided with: a housing (H); a first member (20) that is supported rotatably centered around a predetermined axis of rotation (Lo); a shaft member (70) to which an external tooth gear (71) is formed; an annular member (30) to which an internal tooth gear (31) that meshes with the external tooth gear (71) is formed; a disc member (50) that is disposed in a relatively non-rotatable state with respect to the housing (H); and a transmission mechanism that transmits only the rotational component of the annular member (30) to the disc member (50). The external tooth gear (71) has a different number of teeth from the internal tooth gear (31). Also, a receiving hole (21) that receives the annular member (30) at a position such that the center of the annular member (30) is a predetermined distance from the axis of rotation (Lo) is formed at the first member (20). Additionally, the annular member (30) is received by the receiving hole (21) in a relatively rotatable state with respect to the first member (20).

Description

technical field [0001] The present invention relates to variable speed gear units. Background technique [0002] A speed change gear unit is used as a speed reduction device or a speed increase device for changing the speed of rotation input from a drive source such as a motor. As such a speed change gear device, for example, Patent Documents 1 and 2 disclose a speed reduction device using a planetary gear mechanism. In these speed reduction gears, the planetary gears are caused to revolve around a predetermined rotation axis, and only the planetary gears corresponding to the difference in the number of teeth between the external gears of the planetary gears and the internal gears meshing with the external gears are transferred by the transmission mechanism. The rotation component of the gear is output. According to such a configuration, the reduction gears of Patent Documents 1 and 2 can obtain a higher gear ratio. [0003] Patent Document 1: Japanese Patent Laid-Open No...

Claims

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Application Information

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IPC IPC(8): F16H1/32
CPCF16H1/32F16H2001/325F16H3/70
Inventor 小林恒小野崎彻柴田英纪
Owner JTEKT CORP
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