KR200243445Y1 - Lead Wire Connecting Apparatus of Resin Motor - Google Patents

Abstract

The present invention relates to a lead wire connection device of a motor, wherein a plurality of coils are wound to form a rotating magnetic field by receiving an external power source, and installed inside the stator to rotate by a rotating magnetic field formed by the stator. A resin motor comprising a rotor, a rotating shaft installed inside the rotor and rotating simultaneously with the rotor when the rotor is rotated, and a housing manufactured by injection molding from the outside of the stator. On one side of the end of the coil and the lead wire holder for further positioning the connection portion of the lead wire for supplying external power therein.

According to the above configuration, it is possible to eliminate the connection between the coil and the lead wires in the housing, thereby having the advantage of using a low cost lead wire, and at the same time, the gas generated during the injection of the housing is the lead wire. It is possible to solve the problem that the lead wire is blown into the ride, and also to eliminate the work of inserting a separate tube for the insulation of the coil and lead wire connection, and at the same time to solve the work of fixing with an adhesive tape. This has the advantage of improving work fairness.

Description

Lead Wire Connecting Apparatus of Resin Motor

The present invention relates to a lead wire connection device of a resin motor configured such that a connection portion between a stator coil and a lead wire is positioned inside the lead wire holder.

In general, a resin motor has a stator 2 in which a plurality of iron cores are stacked and a coil 1 is wound at the same time as shown in FIG. 1, and is installed inside the stator 2 to supply power to the coil 1. The rotor 3 is made of a permanent magnet in which the N and S poles are alternately rotated by the rotating magnetic field formed by being applied, and is installed inside the rotor 3 so that the rotor 3 is rotated when the rotor 3 is rotated. It consists of a rotating shaft (5) which rotates simultaneously with the rotor (3), and on the outside of the stator (2) is composed of a housing (7) in which a resin made of thermoplastic resin is molded by injection molding.

Coils 1 of the stator 2 are formed with coil ends of main windings, sub windings, common windings, and the like, and the supply of external electricity to the coils 1 is conducted through the lead wire holder 9. The wire 11 is made by connecting with the coil 1.

As shown in FIG. 3, a plurality of core wires 11a embedded in the lead wire 11 and the ends of the coil 1 are soldered to each other, and a tube 13 is inserted into the connecting wire 11. Insulation is performed, and the adhesive tape T is attached to the upper surface of the coil bundle on which the coil 1 is wound on the lead wire 11 connected to the end of the coil 1 as shown in FIG. 2. To prevent its flow.

However, in the conventional configuration as described above, the connection of the lead wire 11 and the coil 1 is configured inside the housing 7 which is injected into the resin as shown in the drawing, and thus, when the housing 7 is ejected. There is a problem that adverse effects are generated.

That is, the mold temperature of the housing 7 mold is about 140 ° C., but the temperature of the resin becomes higher due to chemical reaction. Therefore, there is a problem in that an expensive material capable of withstanding the material of the lead wire 11 at a high temperature is used, and gas is generated during the injection operation, and the gas flows through the inside of the lead wire 11. There is a problem that there is a risk that the lead wire 11 bursts

In addition, as described above, the connection between the coil 1 and the lead wire 11 is fixed by soldering and protected by the tube 13, and the flow of the lead wire 11 connected as such is prevented. Since the work to attach the adhesive tape (T) has a problem that the connection work process is very cumbersome.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to improve the connection structure of the lead wire and stator coil lead wire connection device of the resin motor to make the connection work more easily To provide.

Another object of the present invention is to use the material of the lead wire as a low-cost material as the position of the stator coil and the lead wire connection part is located inside the lead wire holder member, thereby implementing a structure in which the lead wire is not inserted into the housing. It is possible to provide a lead wire connection device for a resin motor that makes the manufacturing cost down.

Still another object of the present invention is to provide a lead wire connecting device of a resin motor, which solves a problem that gas generated during injection of a housing flows through the inside of the lead wire and causes the lead wire to burst.

Lead wire connection device of the resin motor according to the present invention for achieving the above object is a stator for forming a magnetic field by winding a plurality of coils is supplied with external power, formed inside the stator is formed by the stator Resin consisting of a rotor which is rotated by a rotor field, a rotating shaft which is installed inside the rotor and rotates simultaneously with the rotor when the rotor is rotated, and is molded by injection molding from the outside of the stator. The motor further includes a lead wire holder positioned at one side of the stator to connect the ends of the coil and the lead wires for supplying external power therein.

1 is a longitudinal sectional view showing the structure of a conventional resin motor;

2 is a plan view showing a state in which a stator coil and a lead wire of a conventional resin motor are connected;

3 is a view showing in detail the configuration of the connection portion of the stator coil and the lead wire shown in FIG.

4 is an enlarged cross-sectional view showing a part of an enlarged configuration of a stator coil and a lead wire connection unit according to an embodiment of the present invention;

FIG. 5 is an enlarged perspective view illustrating a partially enlarged configuration of the configuration illustrated in FIG. 4.

<Description of the reference numerals for the main parts of the drawings>

31: Stator

33: coil

35: lead wire

37: lead wire holder

39: housing

Hereinafter, with reference to the accompanying drawings Figures 4 and 5 will be described in more detail the configuration and operation of the present invention.

The resin motor according to the present invention has the same basic configuration as in the prior art, except that the wiring structure of the coil and the lead wire wound around the stator is different.

Therefore, the same parts as in the conventional configuration are omitted from the drawings and description, and as shown in FIGS. 4 and 5, only the ends of the coils and the connecting portions of the lead wires will be enlarged and described.

4 is an enlarged partial cross-sectional view showing an enlarged state in which a stator coil and a lead wire are connected according to an embodiment of the present invention, and FIG. 5 is a partially enlarged perspective view showing the configuration of FIG. 4 in a perspective view.

As shown in the drawing, when the coil 33 is wound on the stator 31, coil ends of the main winding, the sub winding, and the common winding are formed in the coil 33, and lead wires are used to receive electricity from the outside. It is connected with 35.

According to the present invention, the connecting portion C of the coil 33 and the lead wire 35 is positioned inside the lead wire holder 37 as shown.

The lead wire holder 37 is composed of upper and lower bodies 37a and 37b to insert the coil 33 and the lead wire 35 connected thereinto to be fixed therein.

Referring to the working process, first, the outer shell of the lead wire 35 is peeled off to expose the core wire 35a, and the core wire 35a and the end of the coil 33 are connected to each other by soldering or the like.

After connecting the coil 33 and the lead wire 35 in this manner, the lead wire holders 37 are positioned at appropriate positions, respectively, and the upper and lower bodies 37a and 37b of the lead wire holder 37 are moved. Press each to fix the lead wire 35 and the coil 33 therein.

Although not shown in the drawing, the lead wire holder 37 provides a slit groove into which the lead wire 35 can be inserted, and the size of the slit groove can be fixed by being interleaved with the lead wire 35. It may be desirable to form smaller than the outer peripheral surface size of the lead wire 35.

In addition, the coil 33 and the lead wires 35a of the lead wire 35 have been described as an example of being connected by soldering, but are not limited thereto. A separate connection terminal may be provided to connect the core wire to one side of the connection terminal. And it may be implemented as a structure for connecting the coil to the other side of the connection terminal.

In FIG. 4, reference numeral 39 denotes a housing that is injection molded into a resin.

As described above, according to the present invention, the connecting portion of the stator coil 33 and the lead wire 35 is positioned inside the lead wire holder 37, and thus the coupling portion of the stator coil coil 1 is conventionally formed. In the winding part, the gas generated during the injection of the housing 7 flows into the inside of the lead wire 11, thereby eliminating the risk of the lead wire 11 bursting.

In addition, by eliminating the troublesome work of inserting a separate tube for insulation and fixing with an adhesive tape, there is an advantage that the connection can be performed more easily than conventional.

In addition, since the lead wire 11 does not need to be inserted into the housing 7, the low-cost lead wire material may be selected without considering a material that can withstand the high injection temperature in consideration of the housing 7 injection operation. The cost can be reduced.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the utility model registration scope of the present invention should not be limited to the described embodiments, but should be determined by those equivalent to the utility model registration scope described below.

As described above, according to the lead wire connection device of the motor of the present invention, it is possible to eliminate the coil and the lead wire connection portion located inside the housing, and at the same time, it is possible to use a low cost lead wire. The gas generated during the injection of the housing enters the lead wire, thereby solving the problem of the lead wire bursting.

In addition, it is possible to eliminate the work of inserting a separate tube for the insulation of the coil and lead wire connection portion and at the same time to eliminate the work of fixing with an adhesive tape has the advantage of improving the work processability.

Claims (1)

A stator for winding a plurality of coils to form a magnetic field by receiving external power, a rotor installed inside the stator to rotate by a magnetic field formed by the stator, and installed inside the rotor. In a resin motor comprising a rotating shaft that rotates simultaneously with the rotor when the rotor is rotated, and a housing manufactured by injection molding from the outside of the stator, Lead wire connecting device of the resin motor, characterized in that it further comprises a lead wire holder for positioning the connection of the end of the coil and the lead wire for supplying external power to one side of the stator.