JPH052553U - Electric motor stator - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the enlargement of the outer shape of the stator by mounting the heat sensitive element on the outer surface of the stator by detachably mounting the heat sensitive element in the stator of the electric motor. [Structure] A stator iron core 11, a coil 12 mounted on the stator iron core 11, a lead wire 13 led out from the coil 12, and a bushing 14 protecting a lead wire 13 are integrally formed by a resin 15. In the stator 10 of the electric motor formed by molding, the bushing 14 is provided with recesses 17a and 17b.
One ends of the openings 17a and 17b provided with the openings 21 are exposed to the side of the stator 10, and the thermosensitive element 20 is inserted from the openings 21 into the recesses 17a and 17b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to an electric motor stator.

[0002]

[Prior art]

  FIG. 3 is a perspective view of a conventional electric motor. In the figure, 1 is an electric motor, 2 is an electric motor 1 In the stator, a stator core (not shown) and a coil attached to the stator core (shown) And the bushing 3 from the outer peripheral surface 2a. The lead wire 4 of the coil is led out through the It The bracket 5 rotates a rotor (not shown) housed inside the stator 2. The rotor shaft 6 is rotatably supported, and the rotor shaft 6 is supported from the center of one bracket 5a. It is protruding. Reference numeral 7 denotes a heat sensitive element, which is held by the holder 8 on the outer peripheral surface 2a of the stator 2. It is closely fixed to.

[0003]   By the way, according to the above configuration, attachment of the heat-sensitive element 7 and the holder 8 to the stator 2 As a result, the outer shape of the stator 2 becomes large, and it is suitable for mounting the motor 1 on equipment. A heat-sensitive element 7 that causes a trouble or projects together with the holder 8 from the outer peripheral surface 2a of the stator 2. Is apt to hit other parts in the equipment, etc., and the thermal element 7 was damaged by this impact. Therefore, there is a risk that the stator 2 may come off the outer peripheral surface 2a. Also, the holder For 8, it is necessary to use a dedicated part made of relatively expensive phosphor bronze or the like having a spring property. It was.

[0004]

[Problems to be solved by the device]

  The present invention solves the above-mentioned drawbacks and enables the heat-sensitive element to be attached and detached without using a dedicated holder. It is aimed to provide a stator of an electric motor that can be mounted and prevent the external size from increasing. It has been the target.

[0005]

[Means for Solving the Problems]   In order to solve the above problems, in the present invention, a stator core and a stator core are mounted. Coil, the lead wire led out from the coil, and the boot that protects the lead wire In the stator of the electric motor, which is formed by integrally molding Sing and resin , The bushing is provided with a recess, and one end of the recess provided with an opening is fixed to the bushing. The child was exposed on the side of the child, and the thermosensitive element was inserted into the recess through the opening. Also, the above An engaging portion of the thermosensitive element is formed to project on at least one surface of the recess.

[0006]

[Action]

  According to the above configuration, the bush having the stator core, the coil, the lead wire and the recess is provided. Opening of the bushing when integrally molding the ring with resin By exposing one end of the part to the side of the stator and performing molding. Therefore, the heat sensitive element can be inserted through the opening and housed in the recess.

[0007]

【Example】

  An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 9 is an electric motor, 10 is a stator of the electric motor 9, a stator core 11 and a stator core. The coil 12 attached to the coil 11 and the lead wire 13 extending from the coil 12 It is composed of a pair of bushings 14 for protecting the parts, and by the resin 15. It is integrally sealed.

[0008]   The bushing 14 includes a lower bushing 16a and an upper bushing 16b. , Each made of heat-resistant synthetic resin. The lower bushing 16a is A recess 17a for accommodating the heat-sensitive element 20 is provided on one side of the upper surface, and the recess 17a is provided on the other side. A plurality of grooves 18a for holding the lead wire 13 are formed in the front-rear direction, respectively. The upper bushing 16b has a heat sensitive element 20 corresponding to the recess 17a on one side of the lower surface. Recess 17b for accommodation, a plurality of grooves 18b corresponding to the plurality of grooves 18a on the other side Are formed respectively.

[0009]   The recesses 17a and 17b have open portions 19a and 19b at the front ends thereof, respectively. However, the open portions 19a and 19b serve as the lower bushing 16a and the upper bushing 1 respectively. 6b, the opening 21 for inserting the heat sensitive element 20 is attached. It is configured and exposed on the side of the stator 10. In addition, one surface of the recess 17a is A locking portion 22 is provided to prevent the thermosensitive element 20 from coming out. 23 is the front The upper bushing 16a protrudes upward from both side portions of the upper bushing 16a. A pin for aligning the ring 16b, and 24 on both sides of the upper bushing 16b. The through holes are provided in the respective parts and are fitted to the pins 23 in correspondence with each other. Note that Reference numeral 25 denotes a rotor of the electric motor 9, and 27 denotes a sheet metal block for supporting the rotor 25. With a racket, they are attached to both ends of the stator 10, and the bearings 28 are inserted in the center. The shaft 26 of the rotor 25 is rotatably supported by the bearing 28. There is.

[0010]

[Effect of device]

  As described above, according to the present invention, a stator core and a coil attached to the stator core are provided. And a lead wire led out from the coil, and a bushing for protecting the lead wire lead portion. In the stator of the electric motor, which is formed by integrally molding the Is provided with a recess, and one end of the recess provided with an opening is exposed to the side of the stator. Since the heat sensitive element was inserted from the opening and housed in the recess, the outer shape of the stator was enlarged. Can be prevented and a dedicated holding for mounting the heat sensitive element to the stator Since no tools are required, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a stator of an electric motor according to the present invention.

FIG. 2 is an exploded perspective view of a bushing related to the stator of the electric motor of the present invention.

FIG. 3 is a perspective view showing a stator of a conventional electric motor.

[Explanation of symbols]

10 Stator 11 Stator core 12 coils 13 lead wire 14 bushings 15 Resin 17a recess 17b recess 20 Thermal element 21 opening 22 Locking part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Katsushi Narita             1116 Suenaga, Takatsu-ku, Kawasaki-shi Fuji Co., Ltd.             Through General

Claims (2)

[Scope of utility model registration request] 1. An electric motor formed by integrally molding a stator core, a coil mounted on the stator core, a lead wire led out from the coil, and a bushing protecting a lead wire outlet portion with a resin. In the above stator, the bushing is provided with a recess, one end of which is provided with an opening of the recess is exposed at a side of the stator, and a thermosensitive element is inserted into the recess through the opening. A stator of an electric motor, which is characterized in that 2. The stator of an electric motor according to claim 1, wherein a locking portion of the heat sensitive element is formed to project on at least one surface of the recess.