Motor

Abstract

The present invention provides a motor for overcoming a problem that windings are disconnected when a pressure (load) is applied to the windings in air core coils. A disconnection preventing member (6) is provided, and formed with an escaping section (6a) for escaping the winding (33a) in a drawing section (33c) of the air core coils (33, 34) between end faces of stator cores (31, 32) and the air core coils (33, 34). Since the windings (33a, 34a) located in the drawing section (33c) of the air core coils (33, 34) are drawn from the escaping section of the disconnection preventing member (6) when the air core coils (33, 34) are fitted into the stator cores (31, 32), the problem that the windings (33a, 34a) are compressed between the end faces of the stator cores (31, 32) and the air core coils (33, 34), the nonuniform pressure (load) is applied and the disconnection occurrence can be overcomed.

Description

technical field [0001] The invention relates to an electric motor. In particular, it relates to preventing breakage of winding wires of air core coils. Background technique [0002] As shown in Figure 6, the stepper motor used in digital cameras, digital video cameras, FDD, ODD, etc. generally includes: a rotor 201 with a magnet fixed to a rotating shaft, a stator 202 arranged opposite to the rotor 201, a circular An annular bobbin 204 and a coil wire 205 wound around a cylindrical portion of the bobbin 204 . [0003] In the stepping motor 200 having such a structure, in order to realize the miniaturization of the motor body, the bobbin 204 is integrally formed on the inner stator core 202a constituting the stator 202 by insert molding, so that the stepping motor 200 can be miniaturized. . [0004] However, even in the stepping motor 200 in which the bobbin 204 is integrally formed on the inner stator core 202a, the occupancy ratio of the bobbin 204 increases as the size ...

AI Technical Summary

Problems solved by technology

[0008] Therefore, when the coil wire 105 is assembled into the inner stator core 102a, the wire end 105b on the end face 105a of the coil wire 105 is compressed between the coil wire 105 and the inner stator core 102a, so that the The wire end 105b is subjected to uneven pressure (load), and there is a possibility of breaking

[0009] In addition, even after the coil wire 105 is assembled into the inner stator core 102a, the wire end 105b may be subjected to uneven pressure ( load), so that the wire end 105b breaks between the coil wire 105 and the inner stator core 102a, etc.

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