JPH0613361U - Rotating electric machine - Google Patents

Abstract

(57) [Summary] [Structure] A bobbin 11 including a tubular portion 5 and side walls 7 and 8 formed at both ends of the tubular portion 5, and a coil 6 wound around the tubular portion 5 is mounted on a stator core. In the rotary electric machine inserted into the tooth portion of the bobbin 11, a gently inclined relief groove 12 is formed at the winding start portion of the coil 6 on one side wall 8 of the bobbin 11. [Effect] The coil can be wound around the bobbin with high density, and therefore, the performance of the rotating electric machine can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotating electric machine in which a bobbin wound with a coil is attached to the teeth of a stator core.

[0002]

[Prior art]

 The conventional rotary electric machine is configured as shown in FIGS. 2 and 3. In both figures, reference numeral 1 denotes a stator core, which is composed of a ring-shaped yoke portion 2 and a tooth portion 3 that is closely fixed to the yoke portion 2. Reference numeral 4 denotes a bobbin that is inserted into the tooth portion 3 and has a coil 6 wound around the outer peripheral surface of the tubular portion 5. 7 and 8 are the side walls of the bobbin 4. Reference numeral 9 is a relief portion of the coil 6, which is formed by inclining the side wall 8 at the beginning of winding of the coil 6. The winding of the coil 6 around the bobbin 4 starts from the position of the relief portion 9 on the outer periphery of the tubular portion 5. The escape portion 9 has a role of allowing the coil 6 to be smoothly aligned with the coil of the first rotation when the coil 6 rotates the cylindrical portion 5 once and enters the second rotation. In the figure, 10 is a rotor.

[0003]

[Problems to be solved by the device]

 However, in the prior art, since the escape portion 9 of the bobbin 4 is formed over the entire width of the side wall 8, when the coil 6 is laminated in two layers or three layers, the coil 6 is located in this escape portion 2. There is a problem in that the coil 6 cannot be wound on the bobbin 4 with high density and the performance of the rotating electric machine deteriorates. The present invention has been made to solve such a problem, and an object thereof is to provide a high-performance rotating electric machine having a bobbin in which coils are wound at high density.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the rotary electric machine of the present invention is provided with a gently inclined relief groove at the winding start portion of the coil on one side wall of the bobbin.

[0005]

[Action]

 By the above means, the coil is prevented from falling when the coils are laminated, so that the coil is wound in high density and aligned.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The entire structure of the rotating electric machine is the same as that of the conventional example shown in FIG. 2, and therefore, illustration and description thereof are omitted. 1, the same reference numerals as those in FIG. 3 denote the same or corresponding parts. The overall structure of the bobbin 11 is almost the same as that of the conventional example of FIG. 3, but in this embodiment, a gently sloping relief groove 12 is formed at the winding start portion of the coil 6 on the side wall 8 of the bobbin 11. There is. In such a configuration, the common end portion of the coil 6 is inserted into the clearance groove 12 and the winding is started around the bobbin 11. Since the width of the escape groove 12 is narrower than the width of the two coils 6, the coils 6 of the second and subsequent layers do not fall into the escape groove 12, and the coil 6 is higher than the bobbin 11. It is rolled in line with the density.

[0007]

[Effect of device]

 As described above, according to the present invention, since the winding groove 12 is formed on the side wall 8 of the bobbin 11 at the winding start portion of the coil 6, the coil 6 is wound around the bobbin 11 with high density. Therefore, the performance of the rotary electric machine can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a bobbin showing an embodiment of the present invention.

FIG. 2 is a front sectional view of a rotary electric machine showing a conventional example.

FIG. 3 is a perspective view of a bobbin showing a conventional example.

[Explanation of Codes] 1 Stator core 2 Yoke part 3 Teeth part 4 Bobbin 5 Cylindrical part 6 Coil 7 Side wall 8 Side wall 9 Escape part 10 Rotor 11 Bobbin 12 Escape groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yoshiyuki Komai 480 Shimohara, Kamifujisawa, Iruma City, Saitama Prefecture Yasukawa Electric Co., Ltd. Tokyo Factory

Claims (1)

[Scope of utility model registration request] 1. A rotating electric machine comprising a tubular portion and side walls formed at both ends of the tubular portion, and a bobbin having a coil wound around the tubular portion is inserted into a tooth portion of a stator core. , At the winding start portion of the coil on one side wall of the bobbin,
A rotating electric machine characterized in that a relief groove that is gently inclined is formed.