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Drive device

A technology of driving device and opposing surface, which is applied in the direction of transmission device, friction transmission device, electromechanical device, etc., can solve the problems of low forming precision and reduced sliding efficiency of rack and pinion, and achieve the effect of improving sliding efficiency

Pending Publication Date: 2022-02-22
COPAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the forming accuracy of the facing surface is low, the sliding efficiency of the rack and pinion may decrease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Deformed example 1

[0092] Figure 7 It is a perspective view of the rack gear 103 of Modification 1 which can be adopted as the rack gear of the above-mentioned embodiment. The rack and pinion 103 of this modified example differs from the above-described embodiment in that a stepped portion 103g is provided instead of the groove 3g.

[0093] In addition, the same code|symbol is attached|subjected to the component of the same form as the said embodiment, and description is abbreviate|omitted.

[0094] As in the above-mentioned embodiment, the opposing surface 103f of the rack gear 103 and the first guide surface 13f (refer to Figure 6 etc.) opposite and extending along the drive direction. In addition, in this modified example, concave-shaped stepped portions 103g extending along the driving direction are provided on the facing surface 103f at both edge portions in the width direction of the rack gear 103 . Thereby, similarly to the above-described embodiment, the dimension in the width direc...

Deformed example 2

[0096] Figure 8 It is a perspective view of a rack gear 203 according to Modification 2 that can be employed as the rack gear of the above-mentioned embodiment. Compared with the above-mentioned embodiment, the rack and pinion 203 of this modified example mainly differs in that a plurality of grooves 3g are provided.

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Abstract

The invention provides a driving device. The driving device includes: a rack gear extending in a driving direction and having a tooth surface on an upper surface side; a gear motor having a motor body, a transmission mechanism connected to the motor body, and a pinion gear engaged with the rack gear, the pinion gear being connected to the transmission mechanism and rotating about a central axis; and a frame that slidably supports the rack gear. The frame has a guide surface that guides the rack gear from one side in the vertical direction and restricts the rack gear from moving toward the one side in the vertical direction. The rack gear has a facing surface that faces the guide surface and extends in the driving direction. The facing surface is provided with a groove extending in the driving direction or a recessed step portion located at both edges in the width direction and extending in the driving direction.

Description

technical field [0001] The invention relates to drive devices. Background technique [0002] In recent years, while electronic devices such as smartphones have become thinner, higher output has been demanded for mounted gear motors. Patent Document 1 discloses a high-output gear box device mounted on such a thin electronic device. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2019-47589 [0004] The driving device adopts a structure that converts the rotation of the motor into parallel motion by using the output part as a rack and pinion when the object to be driven is moved in parallel. The rack gear is slidably supported by the frame, for example. In addition, the rack pinion is provided with an opposing surface that faces and slides against the guide surface on the frame side. When the forming accuracy of the facing surface is low, the sliding efficiency of the rack and pinion may decrease. Contents of the invention [0005] One object of one aspect of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H19/04H02K7/06
CPCF16H19/04H02K7/06H02K7/116
Inventor 百濑阳介
Owner COPAL CO LTD