KR200232936Y1 - Mold motor having a structure for thermal protecter - Google Patents

Abstract

The present invention relates to a fixed structure of a temperature protection device which is employed to prevent overheating in the winding of a mold motor. In the mold motor according to the present invention is a mold motor molded by using a resin to the outside of the winding stator iron core, provided with an accommodating portion protruding from the outer peripheral surface of the mold so that the temperature protection device can be detached on the outer peripheral surface of the mold motor do. The accommodating portion has two sidewalls protruding from the mold outer circumferential surface, and each of the accommodating portions has an anti-separation portion whose upper end portion is bent inward by a predetermined length. Accordingly, the temperature protection device rating, which has been a problem in the conventional built-in structure of the temperature protection device, is not limited, and the installation of the temperature protection device can be simplified. And it is easy to replace parts due to the occurrence of abnormal temperature protection device.

Description

Mold motor having a temperature protection device mounting structure {Mold motor having a structure for thermal protecter}

TECHNICAL FIELD The present invention relates to a mold motor, and more particularly to a mold motor structured to be equipped with a temperature protection device to prevent overheating generated in the stator winding.

In general, the motor generates heat when driven, and there is a risk of fire if overheated. Therefore, in order to prevent a fire due to overheating, the motor employs a temperature protection device which operates to cut off the power supply to the motor when the preset temperature is reached.

BACKGROUND ART Conventional mold motors employing such a temperature protection device in a motor usually fix the temperature protection device by using a press tape or a fixed structure on the stator winding, and then injection molding using a resin or the like thereon.

However, if the temperature protection device is installed in the mold as described above (hereinafter referred to as 'built-in') the range is limited by the temperature during the mold injection molding. For example, if the temperature protection device is to be operated at 150 ° C or lower due to safety standards, the mold molding temperature is typically 140 ° C. The fuse will not be available. Therefore, if the fuse is to be used in the range of 130 ~ 140 ℃, the injection mold temperature should be about 110 ℃, injection molding is almost impossible, even if possible it takes too much time for injection molding Mass production will be difficult.

In order to solve the problems caused by the injection molding of the motor as described above, it is possible to use a terminal protector with a low operating temperature.However, since the temperature protection device is deformed by the pressure during injection molding, Additional structures must be added to withstand this. However, even in this case, a problem arises that the internal structure of the motor becomes complicated and causes a cost increase.

It is an object of the present invention to provide a temperature protection device fixed structure of a mold motor, the structure is formed so that the temperature protection device can be installed in the mold housing in order to solve the problems caused by the built-in temperature protection device in the motor as described above.

1a is a front view of a mold motor stator according to the present invention,

1B is a side view of FIG. 1A,

FIG. 1C is a side view when the storage portion and the protrusion of FIG. 1B are positioned at a central portion thereof; FIG.

FIG. 2 is a side view of a state in which a temperature protection device is inserted into a storage unit shown in FIG. 1C, and

FIG. 3 is a side view of the stator illustrating when the temperature protection device is inserted into the housing of FIG. 1C in which the clamp is employed. FIG.

Explanation of symbols on the main parts of the drawings

10: rotor insertion groove 20: protrusion

30: accommodating part 30-1, 30-2: side wall

30-1a, 30-1b: separation prevention part 32: clamp

40: temperature protection device 100: stator

200: rotor

The mold motor according to the present invention for achieving the above object is a mold motor formed by molding a resin to the outside of the winding stator iron core, the mold outer peripheral surface so that the temperature protection device can be detached on the outer peripheral surface of the mold motor An accommodation portion formed to protrude from is provided.

The accommodating portion has two sidewalls protruding from the mold outer circumferential surface, and each of the accommodating portions has an anti-separation portion having an upper end bent inward by a predetermined length.

In addition, the accommodating part may further include a clamp forming an upper wall by using the separation preventing part as a locking jaw when the temperature protection device is inserted.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, in the drawings and the following description, the same parts and the same parts are indicated by the same reference numerals regardless of the reference numerals.

1a, 1b, 1c is a view showing a mold motor according to an embodiment of the present invention.

1A is a front view of a stator 100 molded using a resin.

Referring to the drawings, a hole 10 in which a rotor is inserted is formed in the center, and a protrusion 20 is formed at the lower end thereof so that a lead wire for supplying power to the stator windings can be connected.

1B is a side view of FIG. 1A.

Referring to the drawings, an accommodating part (a dashed-dotted portion) 30 is formed to allow the temperature protection device to be inserted and fixed to the right side of the protrusion of FIG. 1A.

The accommodating part 30 has two side walls 30-1 and 30-2 protruding from the mold outer circumferential surface in the longitudinal direction with respect to the width of the temperature protection device. In addition, the upper end portions of the side walls 30-1 and 30-2 are formed with anti-separation portions 30-1a and 30-2a inwardly bent inward to prevent the temperature protection device from being separated. Of course, it is possible to form an insertion space by forming an upper wall that connects the upper end portions of the two side walls 30-1 and 30-2 with each other, and the two side walls 30-1 and 30-2 on the outer circumferential surface thereof. Protruding in the transverse direction with respect to may be another embodiment of the present invention. FIG. 1C is a side view when the housing 30 and the protrusion 20 of FIG. 1B are positioned at the center.

FIG. 2 is a view illustrating a state in which the temperature protection device 40 is mounted in the housing 30 shown in FIG. 1C.

Referring to the drawings, the rotor 200 is inserted into the stator 100 in a penetrating form, the temperature protection device 40 is inserted into the housing 30 with the central portion of one surface exposed. In addition, the backside (not shown) to the exposed surface of the thermal protection device 40 is in contact with the mold outer surface. And it can be seen that the lead wire 40-1 is protruded to the outside of the housing portion 40 and connected to the outside. In this case, in order to minimize the length of the lead wire 40-1, it is preferable that the position of the accommodating part 30 is formed in an area close to the protrusion 20.

As a result, the temperature protection device mounting structure as described above allows the temperature protection device to be installed in an external form of the mold.

3 is a view showing a state in which a temperature protection device is mounted in the housing of Figure 1c employing a clamp.

Looking at the enlarged view of the right side, there is provided a clamp 32 using the separation prevention part 30-1a, 30-2a as a locking jaw in the receiving portion 30, the temperature protection device 40 is clamp 32 It can be seen that it is mounted in the accommodating part 30 while pushing toward the departure prevention part 30-1a and 30-2a.

By adopting the clamp as above, the temperature protection device can be more firmly fixed.

As described above, since the temperature protection device fixing structure of the mold motor according to the present invention is an external attachment structure of the temperature protection device, it is not subject to the rating limitation which was a problem in the conventional temperature protection device built-in type, and the installation of the temperature protection device is simplified. You can do it. In addition, it is possible to easily replace parts due to the occurrence of abnormal temperature protection device.

Claims (4)

In a mold motor molded by using resin to the outside of the wound stator iron core, And a receiving part protruding from the mold outer circumferential surface to be detachable from the mold outer circumferential surface so that the temperature protection device is detachable on the outer circumferential surface of the mold motor. The method of claim 1, And the accommodating part has two sidewalls for supporting the temperature protection device, the mold motor having a temperature protection device mounting structure, wherein the side wall is formed to protrude from the outer peripheral surface of the mold. The method of claim 2, The side wall is a mold motor having a temperature protection device fixed structure, characterized in that each of the upper end is formed by the separation prevention portion is bent inwardly by a predetermined length. The method of claim 3, wherein The accommodating part has a mold motor having a temperature protection device mounting structure, characterized in that the clamp is further formed to form an upper wall by using the separation prevention part as a locking jaw when the temperature protection device is inserted.