Motor with improved circuit board
A circuit board and motor technology, applied in the field of motors, can solve the problems of increasing the load, the rigidity of the circuit board 3 will decrease, and the circuit board will deform in the downward direction, and achieve the effect of reducing the deformation.
Active Publication Date: 2014-10-15
NIDEC CORP
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- Description
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Problems solved by technology
Therefore, the rigidity of the circuit board 3 will decrease
In addition, since the lead terminal 5 is in contact with the outer peripheral portion of the circuit board 3, the load in the downward direction of the circuit board 3 is increased.
As a result, the problem of deformation of the board in the downward direction
Method used
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[0013] Hereinafter, embodiments of the motor of the present invention will be described in detail with reference to the accompanying drawings. The same components or structures will be denoted by the same reference numerals throughout the drawings. The drawings are not necessarily drawn to scale. It should be understood that the following embodiments and drawings are merely exemplary and should not be considered as limiting the scope of the present invention.
[0014] Languages indicating directions such as up and down, inside and outside mentioned in this specification are only for illustratively illustrating the embodiments according to the orientations in the drawings, and are not intended to limit the present invention. Those of ordinary skill in the art can understand that the expression about directions described below in this specification can be changed according to the actual working position.
[0015] figure 1 is a sectional view of the outer rotor type motor ac...
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Disclosed is a motor with an improved circuit board. Disclosed is a motor and cutthrough parts of the circuit board of the motor are arranged in a circumferential direction, a central axis being the center. The circuit board coincides with at least part of a bearing part in the axial direction. Fixed parts of the circuit board are configured at positions which are at the outer side of the axial direction of the cutthrough parts. Lead-out wires which are led out from coils are welded on bonding pad parts through the cutthrough parts. The circuit board of the motor is not provided with any cutthrough hole near a central part or even if the circuit board is provided with a cutthrough hole near a central part, the size of the cutthrough hole is made be a size which allows a shaft to pass. Moreover, the fixed parts of the circuit board are at the position which are at the outer side of the axial direction of the cutthrough parts which the lead-out wires of the coils pass so that the rigidness of the circuit board is improved and a load which the circuit board is subjected to is reduced and thus circuit board deformation is restrained or reduced.
Description
technical field [0001] The present invention relates to a motor, and more particularly, to a motor with an improved circuit board. Background technique [0002] Japanese patent document JP2007-166851A discloses a motor including a stationary part, a rotating part and a bearing part. As shown in FIG. 6( a ) and FIG. 6( b ), the stationary part includes a casing 1 , a stator core 2 , a circuit board 3 and a stator coil 4 . The circuit board 3 is fixed on the casing 1 by adhesive, and the stator coil 4 wound on the stator core 2 is fixed on the casing 1 by pressing or other methods. The circuit board 3 is provided with cutouts 7 on its outer periphery, through which lead terminals 5 of the stator coil 4 pass and are soldered to pads 6 arranged on the lower surface of the circuit board 3 . However, in the motor disclosed in this prior art, in order to mount the circuit board 3 to the central portion of the housing 1 , a through hole (not shown) is provided at the center of the...
Claims
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IPC IPC(8): H02K11/00H02K11/33
Inventor 杉山知嗣竹下英伸高岡司日野典久朱丽彬李相霖陈煜
Owner NIDEC CORP