JPH08321U - Molded motor end bracket mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] A molded motor end bracket mounting structure that allows a cylindrical end bracket fitted with a bearing that supports a motor shaft to be attached to a stator without screwing or bonding. [Structure] A stator core 1 is provided with a stator winding 3 via an insulating winding frame 4, and a bottomed end bracket 9 into which a bearing 11 is fitted is provided, and an opposing surface thereof is provided with an inner peripheral portion. A fixing ring 14 having a flange 14b on the outside and a plurality of L-shaped notches 14c on the flange is integrally formed of a thermosetting resin to form a stator portion 15. The rotating shaft 8 of the rotor 5 is inserted into the stator 15 from the open surface of the stator portion 15 so that its tip is inserted into the bearing 11, and the bearing 11 is inserted into the cylinder from the other end portion. The end bracket 13 having a plurality of projecting locking portions 13b is inserted through the periphery thereof, and the locking portion 13b of the end bracket is locked to the L-shaped notch 14c of the fixing ring 14. Then, the stator 15 is fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an end bracket of a molded motor.

[0002]

[Prior art]

 As shown in FIG. 3, in the molded motor, a stator winding 3 is mounted on an annular stator core 1 through an insulating winding frame 2, and the outer circumference of the stator winding 3 is molded with a thermosetting resin to fix the stator 4. The other side of the stator 4 is integrally assembled with the end bracket 9 into which the bearing 11 is fitted at the time of molding the stator 4, and one side is in an open state, and the rotation penetrates the rotor core from the open surface. The rotor 5 composed of the shaft 8 is inserted, and one end of the rotor 5 is pivotally supported by the bearing 11, and the other end of the rotary shaft 8 is inserted into the bearing 12 fitted in the end bracket 10. Is press-fitted into a recess 4a provided on the open surface of the stator 4, and is fixed to the stator 4 with an adhesive or a screw 13 to rotatably support the rotor 5. However, since the method of fixing the bracket 10 is by screwing or adhering, it takes man-hours at the time of assembling the motor, and also becomes a bottleneck in automating the molding motor assembly.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of such a point, and a fixing ring for mounting the end bracket is integrally incorporated into the end bracket mounting portion on one side of the stator when the stator is molded, so that the end bracket can be easily mounted. Alternatively, it is another object of the present invention to provide an end bracket mounting structure of a mold motor adapted to assembly automation.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an outward flange on an inner peripheral edge of one side of the stator, and embeds a fixing ring having a plurality of L-shaped notches in the flange, while A plurality of engaging portions having spring properties are provided on the outer peripheral edge of the end bracket, and the engaging portions are inserted into the L-shaped notches of the fixing ring and rotated to fix the end bracket to the fixing ring. It is characterized by

[0005]

[Action]

 With the above-described structure, in the end bracket mounting structure of the molded motor according to the present invention, the end bracket is attached to the stator without being screwed or adhered to the fixing ring embedded in the stator. The product can be fixed to the stator only by inserting the locking part provided on the peripheral part of the bracket and rotating the bracket by a predetermined angle.

[0006]

【Example】

 Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing the structure of a molded motor according to the present invention, and FIG. 2 is an assembled sectional view thereof. A stator winding 3 is mounted on an annular stator core 1 via an insulating winding frame 2, and the outer periphery of the stator winding 3 is integrally molded with a thermosetting resin to form a stator 15. On the other side of the stator 15, a bottomed cylindrical end bracket 9 having a bearing 11 in the center is integrally incorporated when the stator 15 is molded. The fixing ring 14 according to the present invention is also integrally incorporated into the open side of the stator 15 when the stator 15 is molded. The fixing ring 14 has an outwardly facing flange 14b formed on the inner peripheral edge thereof, and a plurality of L-shaped notches 14c are formed on the flange 14b. The diameter of the inner peripheral center hole 14a of the fixing ring 14 is The diameter is such that the child 5 can be inserted therethrough. The end bracket 13 has a cylindrical two-stage throttle structure, has a hole 13a through which the rotary shaft 8 is inserted in the center, and a bearing 12 is fitted inside the first stage cylinder. A plurality of curved locking claws 13b are provided on the peripheral edge of the cylindrical portion of the second stage so as to correspond to the L-shaped notches 14c of the flange portion of the fixing ring.

Next, a method of assembling the molded motor having the above configuration will be described. The fixing ring 14 is embedded in the stator 15 when the stator 15 is formed as described above. The rotor 5 is inserted into the stator 15 through the center hole 14a of the fixed ring 14, and the tip of the rotary shaft 8 of the rotor is inserted into the bearing 11 fitted in the end bracket 9. Then, the other end of the rotary shaft 8 is passed through the bearing 12 of the end bracket 13, and the locking claw 13b of the end bracket 13 is inserted into the L-shaped notch 14c of the flange 14b of the fixing ring 14. To insert. After that, when the end bracket 13 is rotated by a predetermined angle in the L-shaped notch direction, the curved portion of the locking claw 13b of the product is pinched by the L-shaped notch, so that the end bracket 13 Is fixed to the fixing ring 14.

[0008]

[Effect of device]

 As described above, in the end bracket mounting structure of the molded motor according to the present invention, when the end bracket is mounted on the stator portion, the product is fixed by the fixing ring without using screws or adhesion. After inserting it into the machine part, it can be fixed to the stator part by rotating it by a predetermined angle, which can reduce the number of assembly process of the mold motor and, at the time of automating the assembly, adaptability to the automation. It is possible to provide an excellent mold motor.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the structure of a molded motor according to the present invention.

FIG. 2 is an assembled sectional view showing an embodiment of the structure of the molded motor according to the present invention.

FIG. 3 is an assembled sectional view showing an embodiment of the structure of a molded motor according to a conventional example.

[Explanation of symbols]

 1 stator core 2 winding frame 3 stator winding 4 stator 4a stator recess 5 rotor 6 rotor core 7 magnet 8 rotary shaft 9 end bracket 10 end bracket 11 bearing 12 bearing 13 end bracket 13a motor shaft insertion hole 13b Locking claw 14 Fixing ring 14a Center hole 14b Flange 14c L-shaped notch 15 Stator

Claims (2)

[Scope of utility model registration request] 1. A stator winding is mounted on an annular stator core via an insulative winding frame, and the outer periphery of the stator winding is integrally molded with a thermosetting resin to form a stator. In a molded motor in which end brackets are provided on both sides of the stator and the bearings of the end brackets pivotally support the rotary shaft of the rotor, an outward flange is provided on the inner peripheral edge of one side of the stator, While embedding a fixing ring having an L-shaped cutout, a plurality of locking portions having spring properties are provided on the outer peripheral edge of the end bracket, and the locking portions are provided with the L-shaped cutout of the fixing ring. An end bracket mounting structure for a molded motor, characterized in that the end bracket is fixed to a fixing ring by inserting and rotating the end bracket. 2. The L-shaped notch tip end portion of the bracket fixing ring is stepped, and the locking portion of the end bracket is locked to the stepped portion. End bracket mounting structure for molded motors.