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Motor

A motor and main body technology, applied in the field of motors, can solve problems such as coil wire breakage, coil wire breakage, etc.

Inactive Publication Date: 2014-05-14
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in any of the structures in Patent Documents 1 to 3, no consideration is given to the problem of disconnection of the coil wire when the case member is covered on the bobbin.
Therefore, when the case member is covered on the bobbin, the wound portion of the coil wire wound between the terminal and the main body of the bobbin is pressed by the end of the case member, and thus there is a problem that the coil wire is broken.

Method used

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Embodiment approach 1

[0055] the whole frame

[0056] figure 1 It is a half sectional view of the motor according to Embodiment 1 of the present invention. figure 1 The illustrated motor 1 is a stepping motor used for driving an optical head in optical disc drive devices such as DVD and Blu-ray Disc, and has a cylindrical stator 40 . The stator 40 has a structure in which an A-phase stator group and a B-phase stator group 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 2 (the first bobbin 2A and the second bobbin 2B) around which the coil wire 20 is wound are overlapped in the motor axis direction L, and The inner stator core 3 and the outer stator core 4 are stacked on top of each other. More specifically, in the first bobbin 2A, the ring-shaped inner stator core 3A and the outer stator core 4A with a U-shaped cross section are stacked on both sides of the motor axis direction L, and the second bobbin In 2...

Embodiment approach 2

[0090] Figure 6 It is a top view of bobbin 2 of motor 1 according to Embodiment 2 of the present invention seen from the second edge portion 22 side. In addition, in Figure 6 In , a state in which the second edge portion 22 is partially cut away is shown. In addition, since the basic configuration of the present embodiment is the same as that of the first embodiment, the same reference numerals are assigned to the common parts and their descriptions are omitted.

[0091] In the first embodiment, in the bobbin 2 , in the surface 251 of the terminal block 25 on the body portion 23 side, the entire radially outer region including the coil wire winding region 250 is the lower region 254 . In contrast, in this embodiment, if Figure 6 As shown, in the outer region of the surface 251 on the side of the body part 23 of the terminal block 25 that overlaps with the second edge part 22 in the motor axis direction L, the winding parts 202 and 203 of the coil wire 20 are aligned with...

Embodiment approach 3

[0094] Figure 7 It is a sectional view of bobbin 2 of motor 1 according to Embodiment 3 of the present invention. In addition, since the basic structure of this embodiment is the same as that of Embodiment 1, the same code|symbol is attached|subjected to a common part, and description is abbreviate|omitted.

[0095] Such as Figure 7As shown, in this embodiment as well in Embodiment 1, in the bobbin 2 , the entire radially outer region of the surface 251 on the side of the main body 23 of the terminal block 25 becomes the lower region 254 . Regarding the above-mentioned bobbin 2, in Embodiment 1, the terminal 91 is a resin integrated with the terminal base 25, but in this embodiment, the terminal 91 is a terminal pin made of metal whose base part is held on the terminal base 25. . Therefore, the surface 914 of the terminal 91 on the side of the main body 23 is located on the opposite side of the main body 23 from the coil wire winding region 250 in the motor axis direction...

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Abstract

Provided is a motor. When a housing part covers a coil frame with a wound coil, a pulling and rolling portion of the coil is prevented from being cut off because of contacting with the housing part. At a side of a first edge portion (21) of a coil frame (2) in the motor (1), a pulling and rolling portion (202, 203) of the coil (20) extends along a surface (251) at a side of a body (23) of a terminal bench (25). An outer area portion placed at a position farther than an overlap area between the pulling and rolling portion and a second edge portion (21) in the axis direction (L) of the motor is arranged to be opposite to a cylinder (46) in the axis direction of the motor. In the surface of the body of the terminal bench, an outer area farther than an overlap area between the surface and the second edge portion in the axis direction of the motor is made to be a low area (254) including an axial outer area, entirely positioned at an opposite side closer to the body than the interior surface (210) of the first edge portion in the axis direction of the motor, of a coil pulling and coiling area (250).

Description

technical field [0001] The invention relates to a motor in which the radially outer side of a coil former is covered by a housing part. Background technique [0002] In a motor such as a stepping motor, the stator has a structure in which a radially outer side of a bobbin around which a coil wire is wound is covered by a case member. The bobbin has edge portions on both sides of a cylindrical body portion, and a coil wire is wound around the body portion. In addition, the end portion of the coil wire is wound between the terminal of the terminal block and the body portion along the terminal block formed radially outside the edge portion. In order to prevent coil wire disconnection, various structures have been proposed regarding the terminal block of the said bobbin. [0003] For example, a structure in which one coil wire is wound in a groove formed in a terminal block has been proposed in order to avoid wire breakage at intersections between coil wires when coil wires ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22H02K3/46
Inventor 米山秀和
Owner SANKYO SEIKI MFG CO LTD
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