KR0130747Y1 - Motor - Google Patents

Abstract

The present invention relates to a commutator motor, and an object of the present invention is to reduce the number of parts and simplify the assembly process by modifying the connection device of the lead coil drawn out from the stator assembly of the motor. To provide a commutator motor.

The commutator motor according to the present invention for achieving the above object is fixed to the coil support forming a fixed self-assembly, the connection terminal to which the lead coil is connected, and the brush support insert is formed to the brush mounted on the outer surface of the housing forming the motor body The subject matter of the present invention consists of a holder and a brush terminal integrally formed on the bottom surface to be automatically inserted into the front of the connection terminal inserted into the brush support inserting portion, and a brush support having a resilient member mounted on the rear thereof to support the brush. .

Description

Commutator electric motor

The present invention relates to a commutator motor, and more particularly, to a commutator motor that reduces the number of parts and simplifies the assembly process by modifying the lead coil connection device drawn from the stator assembly of the motor. will be.

Referring to the attached commutator motor according to the prior art as follows.

FIG. 1 is a perspective view showing the structure of a conventional armature motor, FIG. 2A is a plan view of stator assembly of a conventional commutator motor, and FIG. 2B is a front view of stator assembly of a conventional commutator motor. 3A is a perspective view of a coil support around which coils are wound in a conventional stator assembly, and FIG. 3B is a perspective view showing a connection terminal to which lead coils drawn from coils wound around a coil support are connected in a conventional stator assembly, and FIG. In the conventional stator assembly, the main terminal is a perspective view of the connection terminal fixed to the coil support.

4A is a perspective view showing a brush holder embedded in a conventional electric motor, FIG. 4B is a perspective view showing a brush support embedded in a conventional electric motor, and FIG. 4C is a perspective view showing a brush connection terminal embedded in a conventional electric motor, 5 is a sectional view showing the main parts of the lead coil drawn out from the stator assembly of the conventional electric motor in contact with the brush connecting terminal of the brush holder assembly.

As shown in FIG. 1, the commutator motor according to the prior art generally includes a stator assembly (6) press-fitted to the bottom surface of the housing (1) constituting the body of the commutator motor, and from the inside of the housing (1). Rotor shaft (2) protruding a predetermined range out of the upper side, a commutator (3) mounted on one side of the rotor shaft (2) inside the housing (1), and a brush (4) provided to be external to the commutator (3) And a brush holder assembly 5 which supports the brush 4 and is fixedly mounted on an outer circumferential surface of the housing 1 in which the lead coil 7 drawn out from the stator assembly 6 is connected.

2A and 2B, the stator assembly 6 is drawn out from the pair of opposed coil windings 8a in which the coils 9 are wound inside and the coils 9 wound on the top edge thereof. A plurality of fixing parts to which the lead coil 9a is connected to the connection terminal 10 so that the brush terminal 13 to be described later and the connection terminal 10 are in contact with each other to form an electrical circuit ( Coil support 8 formed with 8b) is provided.

Referring to FIGS. 3A to 3C, the connection terminal 10 is bent with the horizontally projected contact portion 10a and the second hook groove 10c provided in the direction of the contact portion 10a on the bottom having a lattice shape. A plurality of fixing protrusions 10b are integrally formed to be inserted into and fixed to the fixing portion 8b.

In addition, the fixing part 8b of the coil support 8 to which the connection terminal 10 is press-fitted is fixed to the first hook groove in the same direction as the second hook groove 10c of the connection terminal 10 press-fitted to the upper end thereof. (8c) is opposed.

Therefore, the lead coil 9a drawn out from the coil 9 wound on the coil winding portion 8a is pressed by the lead coil 9a fitted in the first hook groove 8c of the fixing portion 8b. The lead coil 9a is connected to the connection terminal 10.

At this time, the fixing protrusion 10b of the connecting terminal 10 is pressed against the inner surface of the fixing part 8b, thereby preventing the flow of the connecting terminal 10 in the state in which the lead coil 9a is connected.

Meanwhile, referring to FIGS. 4A to 4C, the brush holder assembly 5 includes a brush having a brush support inserting portion 11a and a brush terminal inserting portion 11b to which screws are fastened to an outer surface of the housing 1. A holder 11, a brush support 12 inserted into the brush support inserting portion 11a to support the brush 4, and a brush terminal 13 inserted into and fixed to the brush terminal inserting portion 11b. will be.

In the above, the brush terminal 13 is a rectangular plate shape having a predetermined length, and is inserted into the brush terminal inserting portion 11b on the front side thereof, and the locking protrusion 13a fixed to the end of the brush holder 11 and the central portion are bent. And the bent portion 13b and the rear surface which are in contact with the connecting terminal 10 are vertically bent and inserted into the brush support 12 to elastically support the brush 4 which is circumscribed with the commutator 3. The member 14 is mounted.

Accordingly, referring to FIGS. 1 to 5, the lead coil 9a drawn out from the coil 9 wound on the coil winding 8a of the coil support 8 forming the stator assembly 6 is a coil support ( Brush terminal insertion part of the brush holder 60 which is connected to the connection terminal 10 through the fixing part 8b of 8) and is fixed to the outer surface of the housing 1 to the contact part 10a of the connection terminal 10. The bent portion 13b of the brush terminal 13 inserted into the 11b is brought into contact with each other to form an electrical circuit.

However, in the conventional commutator motor configured as described above, in order for the brush terminal 13 to contact the connecting terminal 10 to which the lead coil 9a is connected, the length of the brush terminal 13 must be formed long, and the brush holder is also provided. Since the brush terminal inserting portion 11b into which the brush terminal 13 is inserted is formed in (11), the number of parts and the number of processes are increased, thereby increasing the volume of the product and reducing the productivity and increasing the cost.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to reduce the number of parts and simplify the assembly process by reducing the number of parts and simplifying the assembly process by modifying the connection device of the lead coil drawn out from the stator assembly of the motor. It is to provide a commutator motor with improved savings and productivity.

1 is a perspective view showing the configuration of a conventional commutator electric motor.

2A is a plan view of stator assembly of a conventional commutator motor.

Figure 2b is a front view of the stator assembly of the conventional commutator motor.

Figure 3a is a perspective view of the coil support in which the coil is wound in the conventional stator assembly.

Figure 3b is a perspective view showing a connection terminal to which the lead coil drawn out from the coil wound on the coil support in the conventional stator assembly is connected.

Figure 3c is a perspective view of the main portion of the connection terminal is fixed to the coil support in the conventional stator assembly.

Figure 4a is a perspective view showing a brush holder embedded in a conventional electric motor.

Figure 4b is a perspective view showing a brush support embedded in a conventional electric motor.

Figure 4c is a perspective view showing a brush connection terminal embedded in a conventional electric motor.

Fig. 5 is a sectional view showing the main parts of the lead coil drawn out from the stator assembly of the conventional electric motor in contact with the brush connecting terminal of the brush holder assembly.

Figure 6a is a perspective view showing a coil pedestal of the stator assembly according to the present invention.

FIG. 6B is a perspective view showing the connecting terminal of the lead coil drawn out from the coil wound on the coil support shown in FIG. 5A; FIG.

Figure 6c is a perspective view showing a state in which the stator assembly of the present invention is fixed to the connecting terminal and the coil support.

Figure 7a is a perspective view showing a brush holder embedded in the electric motor according to the present invention.

Figure 7b is a perspective view showing a brush support integrally formed with a brush connection terminal in the electric motor according to the present invention.

9 is a sectional view showing the main parts of the lead coil drawn out from the stator assembly of the motor according to the present invention in contact with the brush connecting terminal.

* Explanation of symbols for main parts of the drawings

20: housing 30: coil support

30a: coil winding part 30b: fixing part

30c: 1st hook groove 50: connection terminal

50a: elastic groove 50b: second hook groove

50c: fixed protrusion 60: brush holder

60a: brush supporter insert 70: brush supporter

70a: Brush terminal 70b: Support part

80: brush 90: elastic member

Commutator motor according to the present invention for achieving the above object,

A coil support consisting of a pair of opposed coil windings in which coils are wound, and a fixing portion formed at an upper end of a pair of first length grooves opposed to each other so that lead coils drawn from the coils wound on the coil windings are fitted;

A connection terminal connected to the lead coil by being press-fitted to the fixed part of the coil support;

Brush holder is formed on the outer surface of the housing forming the brush support insert forming the motor body,

Inserted into the brush support insert portion is automatically inserted into the front connection terminal, characterized in that consisting of a brush support formed integrally with the brush terminal on the bottom.

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

In addition, in all the drawings for demonstrating an embodiment, the thing with the same function uses the same code | symbol, and the repeated description is abbreviate | omitted.

Figure 6a is a perspective view showing a coil support of the stator assembly according to the present invention, Figure 6b is a perspective view showing a connection terminal of the lido coil drawn from the coil wound on the coil support shown in Figure 6a, Figure 6c is a present invention This is a perspective view showing the stator assembly of the fixed terminal connected to the terminal and the coil support.

And, Figure 7a is a perspective view showing a brush holder embedded in the motor according to the present invention, Figure 7b is a perspective view showing a brush support formed integrally with the brush connection terminal in the motor according to the present invention, Figure 8 is a perspective view Fig. 1 is a main sectional view showing a state in which the lead coil drawn out from the stator assembly of the motor is in contact with the brush connecting terminal.

Then, the commutator motor according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 30 in the figure denotes a coil support 30 which is mounted in the housing 20 to form a stator assembly (not shown). The coil support 30 is a pair of opposed coil windings 30a in which coils are wound and will be described later. A plurality of fixing parts 30b to which the connecting terminal 50 is fixed are formed.

A pair of first hook grooves 30c are formed at the upper end of the fixing part 30b so that the lead coil 40 wound around the coil winding part 30 is fitted therein.

Reference numeral 50 denotes a connection terminal 50 press-fitted to the fixing part 30b, and the connection terminal 50 is provided in a rectangular plate shape having a predetermined length so that the front surface is bent in an S-shape (S) shape and the front surface thereof. An elastic groove 50a is formed in the center, and a plurality of fixing protrusions 50c are formed so as to be press-fitted into the fixing portion 30b.

Reference numeral 60 denotes a brush holder 60 having a brush support inserting portion 60a formed therein, the brush holder 60 being screwed to an outer circumferential surface of the housing 20.

Reference numeral 70 denotes a brush support 70 inserted into the brush support inserting part 60. The brush support 70 communicates with both ends thereof so that the brush 80 is inserted, and the brush terminal 70a is integrally formed on the lower bottom surface. The rear side is formed by folding the resilient member 90 between the support portion 70b and the brush 80 so that the collapsible support portion 70b is integrally formed to support the brush 80.

6 and 8, after the lead coil 40 drawn from the coil wound around the coil winding part 30a is fitted into the first hook groove 30c formed opposite to the upper end of the fixing part 30b, When the connection terminal 50 is inserted into the fixing part 30b, the second hook groove 30c is pressed into the lead coil fitted into the first hook groove 30c.

At this time, the fixing protrusion 50c of the connecting terminal 50 is pressed against the inner surface of the fixing part 30b, thereby preventing the detachment of the lead coil 40 connected to the connecting terminal 50.

Referring to FIGS. 7 and 8, the brush support 70 is inserted into the brush support insert 60 of the brush holder 60 screwed to the outer surface of the housing 20, and the brush is inserted into the brush support 70. Brush 80 is elastically in close contact with the commutator not shown by the intervening elastic member (80).

In addition, the brush terminal 70a is integrally formed on the outer bottom of the brush support 70 so that the brush terminal 70a is an elastic groove of the connection terminal 50 when the brush support 70 is inserted into the brush support insert 60. It is automatically inserted in 50 to form an electrical circuit.

As described above, according to the commutator motor according to the present invention, the brush terminal in the assembly process is formed by deforming the connection terminal to which the lead coil drawn out from the stator assembly of the motor is connected and integrally forming the brush terminal in the brush support for supporting the brush. Is automatically connected to the connection terminal, and accordingly, the number of parts is reduced, which is a useful design that increases productivity and reduces costs.

In addition, preferred embodiments of the present invention are disclosed to achieve the purpose of illustration, those skilled in the art will be possible to various modifications, changes, additions, etc. within the spirit and scope of the present invention, these modifications and changes are the following utility model registration claims Should be seen as belonging to.

Claims (2)

In the commutator motor, a pair of opposed coil windings in which coils are wound, and a pair of first hook grooves facing each other so that lead coils drawn out of the coils wound around the coil windings are fitted therein, are fixed parts formed at an upper end thereof. A coil holder, a connection terminal press-fitted to a fixed part of the coil support, to which a lead coil is connected, a brush support inserter, and a brush holder mounted on an outer surface of a housing forming an electric motor body, and inserted into the brush support inserter The commutator motor, characterized in that the brush support is automatically inserted into the front of the connection terminal and the brush support formed integrally with the brush terminal on the bottom. According to claim 1, wherein the connection terminal is provided in a rectangular plate shape having a predetermined length so that the front is formed with an elastic groove bent in an S-shape so that the brush terminal is automatically inserted, and bent to have a grid shape in the center approximately And a second hook groove into which the lead coil is inserted, and a plurality of fixing protrusions are formed on the side thereof so that the connection terminal is fixed to the coil support.