Speed reduction device

A technology of reduction gear and reduction mechanism, which is applied in the direction of transmission, gear transmission, bearing, etc., can solve problems such as easy damage, and achieve the effect of restraining damage and reducing inertia moment.

Pending Publication Date: 2021-02-12
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a difference in hardness, there is a problem that one of the drive

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0032](Embodiment 1)

[0033]figure 1 It is a cross-sectional view showing the reduction gear device according to the first embodiment of the present invention. In this specification, the direction along the rotation axis O1 is defined as the axial direction, the direction perpendicular to the rotation axis O1 is defined as the radial direction, and the rotation direction centered on the rotation axis O1 is defined as the circumferential direction.

[0034]The reduction gear 1 according to the present invention is a flexural meshing gear device in which an external gear 12 flexes and deforms to transmit a rotational movement. Such asfigure 1 As shown, the reduction gear 1 includes: a vibrating body shaft 10, an external gear 12 flexed and deformed by the vibrating body shaft 10, a first internal gear 22g and a second internal gear 23g meshing with the external gear 12, and a vibrating body Bearing 15. Furthermore, the reduction gear 1 includes a first housing 22, a second member 23 having...

Example Embodiment

[0076](Embodiment 2)

[0077]Figure 3A It is a cross-sectional view showing a reduction gear device according to Embodiment 2 of the present invention.Figure 3B Yes meansFigure 3A A partial enlarged view of a part of.Figure 4 Yes means that the assembly hasFigure 3A Diagram of the drive system of the reduction gear.

[0078]The reduction gear 1A and the drive system of the second embodiment are different from the first embodiment mainly in the form of the protective member 28A, and the other parts are the same as those of the first embodiment. Therefore, the same reference numerals are assigned to the same constituent elements as in the first embodiment, and detailed descriptions are omitted.

[0079]In the second embodiment, the end locks on the load side of the second cover 27 and the second member 23 are fitted into the recess 62g of the driven member 62 (refer toFigure 4 ). The second cover 27 has an axially facing surface S1 facing the driven member 62 in the axial direction and a radia...

Example Embodiment

[0083](Embodiment 3)

[0084]Figure 5 It is a cross-sectional view showing a reduction gear device according to Embodiment 3 of the present invention.

[0085]In the reduction gear 1B of the third embodiment, the inner peripheral portion of the protection member 28B is provided with a second protruding portion 28b that engages (opposes in the axial direction) with a part of the oil seal 42 adjacent to the second cover 27. Otherwise, it is almost the same as the first embodiment. The protective member 28A of the second embodiment may be provided with a second protrusion 28b. inFigure 5 Here, the driven member 62 is shown by a phantom line.

[0086]As described above, according to the reduction gear 1B of the third embodiment, the protective member 28B can be made to function as a detachment preventing member of the oil seal 42 based on the second protrusion 28b.

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PUM

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Abstract

Provided is a speed reduction device with which it is possible to reduce the inertial moment of an internal mechanism, and inhibit, when an output member and a driven member are linked, the output member or the driven member from becoming damaged. This speed reduction device (1) has a first member (27) and a speed reduction mechanism that includes internally toothed gears (22g, 23g) and an externally toothed gear (12) that engages with the internally toothed gears, the speed reduction device (1) transmitting rotary motion to a driven member (62), the rotary motion having been reduced in speedby the speed reduction mechanism, wherein the speed reduction device (1) has a protection member (28) disposed between the first member and the driven member. The first member (27) is made from a material having a lower specific gravity than that of the internally toothed gears and/or the externally toothed gear and a lower hardness than that of the driven member, and the protective member (28) ismade from a material having a higher hardness than that of the first member.

Description

technical field [0001] The invention relates to a reduction gear. Background technique [0002] Conventionally, there is a deceleration device that decelerates a rotational motion and outputs the decelerated rotational motion to a driven member. A component that is connected to a driven component and outputs rotational motion is called an output component. Generally, each member constituting the reduction gear including the output member is made of high-strength members such as steel. [0003] Patent Document 1 discloses a reduction gear transmission including a lightweight bearing and a lightweight internal gear. In the bearing of Patent Document 1, the main body member is made of aluminum alloy or the like, and the rolling surface forming member is made of iron-based material. In the internal gear of Patent Document 1, the main body member is made of aluminum alloy or the like, and the tooth portion forming member is made of iron-based material. [0004] Previous techn...

Claims

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Application Information

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IPC IPC(8): F16H1/32F16C19/16F16C19/36F16C33/64
CPCF16C19/06F16C33/62F16C2202/04F16C2361/61F16H49/001F16C19/55F16H1/32
Inventor 石田悠朗石塚正幸
Owner SUMITOMO HEAVY IND LTD
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