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Motor

A technology for a motor and a support shaft, applied in the field of motors, can solve the problem of not being able to fix the strength of the support shaft, and achieve the effect of stable strength and efficient fixation

Active Publication Date: 2014-10-01
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the structure described in Japanese Laid-Open Patent Publication No. 2001-286108, there is a problem that sufficient fixing strength of the support shaft to the frame cannot be obtained with respect to the man-hours spent using the burrs.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0021] (the whole frame)

[0022] figure 1 It is explanatory drawing of the motor concerning Embodiment 1 of this invention. figure 1 The illustrated motor 1 is a stepping motor used for driving a lens of a digital camera or the like, and the motor 1 has a cylindrical stator 40 . The stator 40 has a structure in which an A-phase stator and a B-phase stator are arranged to overlap each other in the motor axis direction L. As shown in FIG. Therefore, in the stator 40 , two ring-shaped bobbins 42 (the first bobbin 42A and the second bobbin 42B) around which the coil wire 46 is wound are arranged to overlap in the motor axis direction L, and the bobbin 42 The inner stator core 43 and the outer stator core 44 are arranged to overlap each other. More specifically, the ring-shaped inner stator core 43A and the outer stator core 44A with a U-shaped cross-section are overlapped on both sides of the motor axis direction L in the first bobbin 42A. The ring-shaped inner stator core 43...

Embodiment approach 2

[0051] FIGS. 3( a ) to 3 ( c ) are explanatory diagrams showing the process of fixing the support shaft 9 to the frame 3 in the manufacturing process of the motor 1 according to Embodiment 2 of the present invention. 3( b ) and FIG. 3( c ) are explanatory views of the process of forming the second fixing portion 9 b , an enlarged cross-sectional view showing the area surrounded by the circle Lf in FIG. 3 ( a ), and the structure of the first fixing portion 9 a. An explanatory diagram of the process. In addition, since the basic structure of this embodiment is the same as Embodiment 1, the same code|symbol is attached|subjected to a common part, and description is abbreviate|omitted.

[0052] In the motor 1 of this embodiment, as in the first embodiment, the support shaft 9 and the rotation shaft 50 are fixed between the first plate portion 31 and the second plate portion 32 of the frame 3 in parallel, and the support shaft 9 serves as The guide shaft of the driven part 2 play...

Embodiment approach ）

[0060] In the above-described embodiment, since the driven member 2 is a linear motion member having the engagement portion 21 engaged with the helical groove 58 formed on the outer peripheral surface 57 of the rotating shaft 50 and the guide hole 22 slidingly connected to the support shaft 9 Therefore, the support shaft 9 functions as a guide shaft, but it may also be configured as follows: a driving gear is provided on the rotating shaft 50, and the gear meshing with the driving gear is supported by the support shaft 9 as the driven member 2. able to rotate.

[0061] In the above-mentioned embodiment, both the first fixing portion 9a and the second fixing portion 9b are fixed by welding, but only one of the first fixing portion 9a and the second fixing portion 9b may be used. fixed by welding. For example, in the second embodiment, the following structure may also be used: only the second fixing part 9b is fixed by welding, and at the first fixing part 9a, the stepped first...

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Abstract

Provided is a motor (1). In the motor (1), at a first fixing part (9a) between a first end part (91) of a bearing shaft (9) and a first plate part (31) of a frame (3) and a second fixing part (9b) between a second end part (92) of the bearing shaft (9) and a second plate part (32) of the frame (3), the bearing shaft (9) and the frame (3) are fixed through welding by irradiating laser dots from the side opposite to the extending side of the bearing shaft (9). Moreover, welding is only carried out on a part of the circumference of the bearing shaft (9). The spacing between a rotating shaft (50) and the bearing shaft (9) is greater than that between the rotating shaft (50) and a connecting part (33). Therefore, the two ends of the bearing shaft (9) are efficiently and properly fixed to the frame fixed at a motor body part.

Description

technical field [0001] The present invention relates to a motor in which an end portion of a rotating shaft and both end portions of a support shaft are supported by a frame fixed to a motor main body. Background technique [0002] For motors such as stepping motors, a structure has been proposed in which the end of the rotating shaft and both ends of the supporting shaft are supported on a frame fixed to the main body of the motor, and the supporting shaft is driven by the rotating shaft to perform direct motion. It is used for the guide shaft of the driven part. The frame has a first plate portion fixed to the motor main body, a second plate portion facing the first plate portion and supporting an end portion of the rotating shaft, and a connection portion connecting the first plate portion and the second plate portion. [0003] Regarding the motor of the above-mentioned structure, a structure has been proposed in which, when the support shaft is fixed to the frame, after...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/14
Inventor 河西繁
Owner SANKYO SEIKI MFG CO LTD