JP2597862Y2 - Motor safety protection device mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold motor provided with a safety protection device which operates by detecting an abnormal temperature rise of a stator coil.

[0002]

2. Description of the Related Art Conventionally, it is necessary to attach a safety protection device such as a protector to a stator for safety protection in the event of an abnormality. In many cases, the safety protection device is fixed to a stator coil by a fixing band or the like. Used. Hereinafter, an example of a mounting structure of the safety protection device in the above-described conventional stator coil will be described with reference to the drawings. FIG.
1 shows a motor stator having a conventional safety protection device. In FIG. 7, reference numeral 4 denotes a stator core, 5 denotes a stator coil, 11 denotes a safety protection device, and 21 denotes a binding band. The safety protection device 11 is fixed to the stator coil 5. 22 is a lead wire, 23 is an insulation protection tube,
Insulation protection is provided for the connection between the stator coil 5, the lead wire 22, the safety protection device 11, and the like. In the above configuration, when an abnormality occurs in the stator coil 5, the stator coil 5
The safety protection device 11 is activated by a rise in the temperature of the stator coil 5 and has a function of preventing an abnormal situation such as combustion.

[0003]

However, in the above-described configuration, the stator coil must be kept within a predetermined dimension in assembling the motor. The height of the coil must be corrected and the tie-down of the safety protection device to the stator coil requires skill, and manual work is extremely difficult. In addition, there is a problem that the degree of adhesion of the safety protection device is easily reduced due to loosening of the binding band and the like. In addition, the surface of the stator coil has irregularities, so there is a gap, and the area of contact with the stator coil by the safety protection device that detects the temperature of this surface is reduced, so variations occur and accurate temperature detection is required. Could not.

When a protector is mounted on a stator coil of a mold motor, deformation due to molding pressure during mold molding, intrusion of a resin material into the protector, and resin between the stator coil and the protector. The intrusion of the material caused a gap between the stator coil and the protector, resulting in a problem that the operating temperature of the protector fluctuated. The present invention has been made to solve such a problem, and can be attached to a stator coil reliably and with good workability. In the case of a mold motor, a safety device such as a protector can be used. Temperature detection accuracy can be improved.
Also, due to shaping correction of the coil height at the place where the protector is attached, rare shorts etc. may occur in the stator coil,
Another object of the present invention is to provide a mounting structure for a safety protection device such as a protector in a stator, which can reduce quality problems such as malfunction of the protector when the protector is fixed by the binding band by local force of the binding band.

[0005]

In order to solve the above-mentioned problem, the mounting structure of the safety protection device such as the protector of the present invention is as follows.
After providing a storage portion for storing the safety protection device in a holder fixed to the outer peripheral portion of the stator core, inserting a safety protection device such as a protector into the storage portion and filling the entrance of the storage portion with resin, Further, the whole stator on which the stator coil including the holder is applied is molded integrally with resin. Moreover, the holder is hollow, the entrance is formed in a double structure, the inner layer forms a storage section for storing the protector, and the outer layer forms a moat for injecting resin after storing the protector, so that the protector can be protected. Since the groove is provided between the inner layer and the outer layer, the resin enters the groove and the strength of the holder itself is increased.

[0006]

[Work] As described above, according to the present invention, the protector is stored and fixed in the storage portion provided in the holder, thereby eliminating the need for a binding band conventionally used for fixing the protector to the stator coil. In addition, the step of shaping and correcting the height of the stator coil at the place where the protector is attached to keep the stator coil within a predetermined dimension, which has been conventionally performed, is not required, and the manufacturing process is simplified. In addition, since the protector is built in the storage portion provided in the holder of the molded product with built-in mold motor, the moat formed at the entrance of the storage portion is covered with resin and then molded, so that the molding is performed. Since the protector is not deformed due to the intrusion of the resin material during molding and the molding pressure, and the adhesion to the stator coil is uniform, the temperature detection accuracy of the protector is improved. Further, the protector can be securely attached, and the assembling is extremely easy, and the workability is improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to one embodiment shown in the drawings. FIG. 1 is a front view of a mold motor according to an embodiment of the present invention. FIG. 2 is a plan view of the stator before molding, and FIG. 3 is a front view of the stator before molding. In FIG. 1, reference numeral 1 denotes a jacket covering the stator shown in FIGS. 2 and 3, which is made of mold resin. An L-shaped conductive connection terminal 2 connected to a lead wire from a jacket 1 made of mold resin is formed by exposing a part of a connector 3 made of an internal molded product together with the connection terminal.

In FIG. 2, reference numeral 4 denotes a stator core formed by laminating a plurality of thin plates made of a magnetic material, and reference numeral 5 denotes a stator coil wound around the stator core. Reference numeral 6 denotes a holder made of a molded product so as to cover the end face of the stator coil.
A printed circuit board made of an arc-shaped insulator supported through the printed circuit board. The printed circuit board is provided with a conductive conductive layer 8, and the conductive layer forms a lead wire 9 from the end of the stator coil.
And connected by soldering. On the other hand, for connection with the lead wire, the one covered with the jacket of the L-shaped connection terminal fixed to the connector is inserted into a hole provided in the conductive layer of the printed circuit board and connected by soldering. The connection terminal exposed from the outer cover together with the one connector has a lead wire fixed in a housing (not shown) or the like, the housing is inserted, and the lead wire from the stator coil is electrically connected to the lead wire. It is electrically connected to the lead line via the layer. Reference numeral 10 denotes a binding yarn that binds the stator coil 5. The connection between the safety protection device 11 such as a protector and the stator coil and the lead wire is made by connecting the safety protection device lead wire 1 connected to the safety protection device.
2 through the conductive layer of the printed circuit board.

FIG. 3 shows a stator coil according to the present invention.
FIG. 4 is a cross-sectional view of a main part showing a state in which the safety protection device is stored in a storage part and is attached to a stator core. FIG. 4 shows a case where the safety protection device is stored in the storage portion of the holder according to the present invention.
In the plan view showing a state where the printed circuit board is mounted on the printed circuit board, a part of the conductive layer provided on the printed circuit board is omitted. Next, a mounting structure of a safety protection device such as a protector in the holder will be described. 3 and 4, 1
Reference numeral 1 denotes a safety protection device such as a protector, and 13 denotes a storage portion that stores the safety protection device provided on the holder 7 so as to face the stator coil 5. This holder 7 has a stator coil 5
Notch 14 provided in the outer peripheral portion of the stator core 4 on which is wound
The supporting feet 15 are provided so that the supporting feet 15 can be inserted into and fixed to the supporting feet.
After the protector is inserted into the housing of the holder and the entrance of the housing is covered with a filler 16 such as resin, the entire stator including the holder and the stator coil is molded with resin. As a result, the intrusion of the material during the molding and the deformation of the protector due to the molding pressure are eliminated.

FIG. 5 is a plan view of the holder for accommodating the security device according to the present invention. FIG. 6 is a front view of the holder of the present invention for storing the safety protection device. Next, a holder for storing a safety protection device such as a protector will be described. 5 and 6, reference numeral 17 denotes an outer layer, 18 denotes an inner layer, and 19 denotes a groove formed between the outer and inner layers by providing a step between the outer and inner layers. The holder of the present invention is hollow, the entrance is formed in a double structure, the inner layer 18 forms the storage part 13 for storing the protector, and the storage part entrance forms the moat part 20 formed by the outer layer 17. First, the protector can be protected by filling the moat portion and the groove portion with a resin after storing the protector in the storage portion, and since the groove portion is provided between the inner layer and the outer layer, the resin enters the groove portion and the holder enters. The strength itself is also increased. Reference numeral 15 denotes a support leg fixed to a notch groove and an insertion hole provided on an outer peripheral portion and an end face of the stator core. The holder is held and fixed to the stator core by these supporting feet.

As described above, according to the present embodiment, the housing portion of the holder is provided on the surface facing the stator coil, the protector is inserted therein, and the resin is filled. The protector can be operated at the set temperature because the protector can be double-protected by the
The variation in the temperature detection of the stator coil is eliminated, the accuracy of the temperature detection is improved, and malfunction due to intrusion or deformation of the material into the protector can be eliminated. Furthermore, according to the above configuration, since the holder is provided with the storage portion for storing the protector and the protector is stored and fixed, a binding band or the like for fixing the protector becomes unnecessary, and the stator coil is kept within a predetermined size. Therefore, the manufacturing process is simplified, for example, the shaping and correcting process of the stator coil becomes unnecessary. In addition,
Although the present invention has been described with respect to the mold motor, it is needless to say that the stator structure of the present invention can be used for other than the mold motor.

[0012]

As described above, the present invention provides a safety device in which a holder for storing a security device is provided in a holder for mounting a security device such as a protector, and a mounting structure for storing and fixing the device is employed. The simplification of the manufacturing process is achieved by eliminating the need for the shaping and correcting process of the binding band and the stator winding for fixing the protection device, and the simplification of the manufacturing process reduces defects such as rare shot failure and malfunction of the safety protection device. Can be realized. In addition, the mounting structure of the safety protection device of the overheating prevention device of the present invention is such that the storage part is provided integrally with the holder, the safety protection device is fixed in the storage part, and the moat part and the groove part which are the entrance of the storage part are made of resin. With the double protection structure, which is further molded after filling, the protection of the safety protection device and the strength of the holder are increased, and the temperature can be detected reliably. As described above, the necessity of the conventional manual operation is eliminated, so that the quality is stable, the mechanical assembling becomes possible, the temperature detection accuracy is excellent, and the module has a much better effect than the conventional case. -Can provide a motor.

[Brief description of the drawings]

FIG. 1 is a front view of a mold motor according to an embodiment of the present invention.

FIG. 2 is a plan view of a stator according to an embodiment of the present invention.

FIG. 3 is a front view of the stator according to the embodiment of the present invention;

FIG. 4 is a plan view showing a state in which a printed circuit board is attached to the holder according to the embodiment of the present invention;

FIG. 5 is a plan view of the holder of the present invention.

FIG. 6 is a front view of the holder of the present invention.

FIG. 7 is a plan view of a conventional stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer jacket 2 Connection terminal 3 Connector 4 Stator core 5 Stator coil 6 Printed circuit board 7 Holder 8 Conductive layer 9 Outgoing wire 10 Binding thread 11 Safety protection device 12 Lead wire for safety protection device 13 Housing 14 Notch Groove 15 Support foot 16 Filler 17 Outer layer 18 Inner layer 19 Groove section 20 Moat section 21 Binding band 22 Lead wire 23 Insulation protection tube

Claims (2)

(57) [Scope of request for utility model registration] 1. A holder is fixed to an outer peripheral portion of a stator core, a stator coil is applied to the stator core to form a stator, and the holder is disposed so as to face the stator coil. In addition, this holder is provided with a moat part and a storage part in a hollow shape, a safety protection device for detecting the temperature of the surface of the stator coil is stored in the storage part, and a moat part is formed at the entrance of the storage part. A motor safety protection device mounting structure in which the holder and the stator are integrally molded with a filler such as a resin. 2. The holder has a hollow shape and an entrance having a double structure, an outer layer forming a moat for injecting a filler such as a resin, an inner layer serving as a storage portion for storing a safety protection device, and an outer layer and an inner layer. 2. The motor safety protection device mounting structure according to claim 1 , wherein a step is provided and a groove is provided in the step .