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Motor

A technology of electric motor and sliding direction, applied in the field of electric motor, can solve the problems of accidental inclination of bearing 82', drop of clamping force, etc.

Active Publication Date: 2009-09-30
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, if the width dimension of the engagement recesses 811', 812', 813, 814' is reduced, the engagement of the spring member 80' (hooks 801', 802', 803', 804') to the bearing holder 81' joint force will drop
In addition, if the bearing holder 81' is made thinner as a whole, the size of the supporting bearing 82' in the direction of the motor axis becomes shorter, and the bearing 82' will be inclined unexpectedly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0042] (The overall structure of the motor)

[0043] figure 1 (a), (b), and (c) are respectively a plan view, a front view, and a cross-sectional view on the reverse output side of the electric motor according to Embodiment 1 of the present invention. figure 2 (a), (b), (c), and (d) are a side view of the motor according to Embodiment 1 of the present invention when viewed from the reverse output side, and the spring member is attached to the bearing holder when viewed from the output side The explanatory diagram of the form, from figure 2 (b) A bottom view of the form where the spring member is attached to the bearing holder viewed from the arrow A1 side, and from the figure 2 The front view of the form in which the spring member is attached to the bearing holder is seen from the arrow B1 side of (b).

[0044] Such as figure 1 (a), (b), (c) and figure 2 As shown in (a), the motor 1 of this form is a small stepping motor used in digital cameras, digital video cameras, etc.,...

Embodiment approach 2

[0093] Figure 5 It is an explanatory diagram of the bearing holder 6 used in the electric motor according to the second embodiment of the present invention, Figure 5 (a)~(d) are explanatory diagrams of the bearing holder 6 viewed from the opposite output side. Figure 5 (a) See the explanatory drawing of the bearing holder 6 in the direction shown by the arrow A5, from Figure 5 (a) See the explanatory drawing of the bearing holder in the direction indicated by the arrow B5 and the explanatory drawing of the bearing holder 6 viewed from the output side. Since the basic structure of the present embodiment is the same as that of the first embodiment, the same reference numerals are given to the common parts, and the description thereof is omitted. In addition, since the electric motor 1 of the present embodiment is different from the first embodiment only in the structure of the bearing holder 6, the description will be centered on the structure of the bearing holder 6.

[0094] ...

Embodiment approach 3

[0100] In the first and second embodiments, the spring member is attached to the bearing holder in the direction intersecting the axis of the motor, but in this embodiment, refer to Figure 6 As explained, the spring member is attached to the bearing holder along the motor axis direction.

[0101] Figure 6 It is an explanatory diagram of the electric motor according to the third embodiment of the present invention, Figure 6 (a) to (f) are the top view and the front view of the end of the motor, the side view showing the end on the reverse output side, the explanatory view of the end surface on the reverse output side of the bearing holder, the cross-sectional view of the bearing holder, and the bearing holder, respectively An explanatory drawing of the end face of the output side of the component.

[0102] Figure 6 The motor shown includes a housing 2 housing a rotor and a coil, a bearing 82 that supports the shaft end of the rotor shaft at one end of the housing 2, and a bearing...

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Abstract

A motor is disclosed, which can make the size and shape of a bearing holding hole for supporting bearing have high accurancy without reducing the support size of the supporting bearing in the motor axis direction and the clamp force between spring member and bearing holders, even the size between the motor and the motor axis in orthognal direction is reduced. In the motor (1), on the inner end side (6b) of a bearing holder (6), the part clamped with two hook parts (73) of the spring member (7) is a clamp concave part (65) formed by thinner part of the bearing holder (6), and the part of the clamp concave part (65) extending to the aperture edge of the bearing holding hole (61) forms a notch (65m). On the aperture edge of the bearing holding hole (61), the part formed with the clamp concave part (65) is 1 / 2 or less of the whole circle of the aperture edge of the bearing holding hole (61).

Description

Technical field [0001] The present invention relates to an electric motor, and more particularly, to a fixing structure of a spring member that urges a bearing in the direction of a shaft end of a rotating shaft. Background technique [0002] Small stepping motors used in digital cameras, digital video cameras, thin optical drives, etc. generally have such features as Figure 7 (a) The structure shown in 7(f). Figure 7 (a) to 7(f) are a plan view and a front view of the end of the motor, a side view showing the end of the opposite output side (the side opposite to the output side), and an explanatory view of the opposite output side end surface of the bearing holder. A cross-sectional view of the bearing holder and an explanatory view of the output side end surface of the bearing holder, Figure 7 The motor shown includes: a housing 2'accommodating a rotor and a coil, a bearing 82' that supports the shaft end of the rotor shaft at one end of the housing 2', and a bearing for ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K37/00H02K5/16
CPCH02K7/081F16C17/08H02K5/1732F16C25/04
Inventor 福泽久志
Owner SANKYO SEIKI MFG CO LTD