Linear driving device

A linear drive and action technology, applied in transmissions, gear transmissions, electromechanical devices, etc.

Pending Publication Date: 2021-10-19
COPAL ELECTRON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if a linear drive device is provided with a structure that restricts the linear motion of the shaft, the overall size of the linear drive device tends to increase.

Method used

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  • Linear driving device
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Examples

Experimental program
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Effect test

Embodiment approach

[0017] figure 1 It is a cross-sectional view of the structure of the linear drive device 10 according to the embodiment of the present invention cut along the vertical direction. figure 2 It is a perspective view showing the structure of the shaft 1 of this embodiment. In the drawings, the same reference numerals are assigned to the same parts, and explanations thereof are appropriately omitted.

[0018] The linear drive device 10 includes a shaft 1 , a rotor 2 , a coil 3 , a yoke 4 , a mounting plate 5 , a nut 6 , a bearing 7 , and a shaft movement restricting portion 20 . In addition, if image 3 As shown, the linear drive device 10 may include a connector portion 9 for electrically connecting wiring for supplying power or transmitting and receiving electric signals. Here, the description will be made with the side of the shaft movement restricting portion 20 as the upper side and the nut 6 side as the lower side.

[0019] The shaft 1 presses an operation object of the ...

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PUM

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Abstract

The present invention relates to a linear driving device (10). The linear driving device comprises: a motor; a shaft (1) that rotates by the rotational force of a motor rotor and operates in the thrust direction with respect to the rotor; a bearing (23) of the shaft; a shaft gear (26) that is provided on the bearing (23) and rotates by the rotation of the shaft (1); a first gear (27) that meshes with the shaft gear (26); a first base (24) located below the first gear and rotating together with the first gear; a second gear (28) that meshes with the first gear and has a different number of teeth from the first gear; a second base (25) located below the second gear and rotating together with the second gear; a first rotation stopping part arranged on the side surface of a first base; and a second rotation blocking part, which is provided on the side surface of a second base, and stops the rotation of the first base and the second base by colliding with the first rotation blocking part, and restricts the movement of the shaft across the uppermost point or the lowermost point of a prescribed range.

Description

technical field [0001] Embodiments of the present invention relate to a linear drive device. Background technique [0002] There is known a linear drive device that generally moves a shaft linearly by a rotational force generated by an electric motor. For example, a linear drive device is disclosed that uses an American winding stop mechanism (American Winding Stop Mechanism) to limit the linear movement stroke of a movable shaft (see Patent Document 1). [0003] However, if a linear drive device is provided with a structure that restricts the linear movement of the shaft, the entire linear drive device tends to be enlarged in size. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent No. 4136333 Contents of the invention [0007] An object of an embodiment of the present invention is to provide a linear drive device that is provided with a structure that restricts the linear movement of a shaft and suppresses enlargement....

Claims

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Application Information

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IPC IPC(8): F16H1/20H02K7/116
CPCF16H1/20H02K7/116
Inventor熊井户一彦藤仓干雄
OwnerCOPAL ELECTRON CO LTD