KR20020036157A - Structure for mounting brushes on a mounting plate - Google Patents

Abstract

PURPOSE: A brush mounting structure of a car motor is provided to reduce the number of parts and assembling time by supporting a brush to be slided on a mounting plate. CONSTITUTION: A brush mounting structure of a car motor comprises four brushes(20), each of the brushes having guiding grooves(22) of slots, and a mounting plate(10) having four guides(12), each of the guides(12) having a width less than that of the brush(20). The brush(20) is mounted on the mounting plate(10). The guiding grooves(22) are inserted into the guides(12), respectively, to move lengthwise. Each guide(12) has a first mounting protrusion(14). Each brush(20) has a second mounting protrusion(24) opposite to the first mounting protrusion(14). A spring(16) is inserted between the first mounting protrusion(14) and the second mounting protrusion(24) to press the brush(20) for maintaining contact with the commutator segment.

Description

Brush mounting structure of motor for motors {STRUCTURE FOR MOUNTING BRUSHES ON A MOUNTING PLATE}

The present invention relates to a brush mounting structure of a motor for a vehicle, and more particularly, to form a guide groove on both sides of the brush, and to the mounting plate to form a guide portion for guiding sliding so as to guide the sliding movement without using a brush holder The present invention relates to a brush mounting structure of a motor for a vehicle that can be supported to slide along a guide part.

Various types of motors are used in the vehicle, such as a wiper motor that rotates the wiper blades to remove rainwater or dust on the windshield, and a window lifting motor that operates the door glass mounted on the door up and down. Most of these motors for motor vehicles have armature shafts arranged in the longitudinal direction in housings with magnets attached to the inner walls, and armature windings are wound around the outer periphery of the armature shafts. In addition, a commutator is fitted in the armature shaft, and the commutator piece pressed into the outer circumferential surface of the commutator alternately and continuously changes the direction of the current flowing through the armature winding while maintaining contact with the brush pressurized by the spring. This ensures that the amateur always rotates in the same direction.

In a vehicle motor having such a structure, when electricity is supplied to the armature winding through a brush and a commutator incorporated in the brush holder assembly, the armature shaft starts to rotate by the electromotive force generated by the magnet, thereby generating a driving force.

1 shows a conventional brush holder assembly. As shown here, the mounting plate 3 to which the brush is mounted is formed with a plurality of holes 4a, 4a '; 4b, 4b', and a brush holder 1 for slidably supporting the brush. The plurality of legs 2a (2b, 2b ') inserted into and fixed to the holes (4a, 4a'; 4b, 4b ') are formed to protrude downward. At the time of assembly, a plurality of legs 2a; 2b and 2b 'are inserted into the holes 4a and 4a' and 4b and 4b ', respectively, and bent and fixed.

The brush mounting structure of a conventional vehicle motor having such a configuration requires an additional brush holder, so that the number of parts is increased, and a lot of work time is required in the process of fixing the brush holder to the mounting plate. There is a rising problem.

The present invention for solving this problem is to support the brush to slide on the mounting plate without using a separate component such as a brush holder, the brush mounting structure of a motor for a vehicle that can reduce the number of parts and shorten the assembly time The purpose is to provide.

1 is an exploded perspective view showing a structure of a conventional brush holder,

Figure 2 is an exploded perspective view showing a brush mounting structure of the present invention,

Figure 3 is an assembled perspective view showing a brush mounting structure of the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: mounting plate 12: guide part

14, 24: fixed protrusion 16: spring

20: brush 22: guide groove

The brush mounting structure of the vehicle motor of the present invention for achieving the above object is a vehicle motor provided with a brush for continuously supplying battery electricity to the armature winding through a commutator fixed to the rotor shaft, both sides of the brush A guide groove is formed, and the mounting plate on which the brush is mounted is formed with a guide portion into which the guide groove of the brush is inserted.

Hereinafter, a brush mounting structure of a motor for a vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

Figure 2 is an exploded perspective view showing a brush mounting structure of the present invention, Figure 3 is an assembled perspective view showing a brush mounting structure of the present invention.

In the preferred embodiment of the present invention to mount the brush to supply the electricity of the battery to the armature winding through the commutator, so that the armature shaft rotates in one direction without using a separate component such as a brush holder as shown in FIG. The same mounting structure was adopted. That is, slot grooves 22 are formed on both sides of the brush 20, and the guide plate 12 slightly smaller than the width of the brush 20 is mounted on the mounting plate 10 on which the brush 20 is mounted. Formed. The guide part 12 of the brush 20 is inserted into the guide part 12 and moves along the longitudinal direction. In the drawing, only one is shown, but in fact, four brushes are mounted on the motor for the guide part 12. Will also form four.

Meanwhile, the first fixing protrusion 14 is formed on the guide part 12, and the second fixing protrusion 24 is formed on one side of the brush 20 to face the first fixing protrusion 14. The spring 16 is inserted between the first fixing protrusion 14 and the second fixing protrusion 24 to press the brush 20 with a constant force to maintain contact with the commutator piece.

3 shows the assembled state of these parts. As shown in the drawing, guide grooves formed at both sides of the brush 20 are inserted into the guide portion, and the spring 16 is fitted to the rear of the brush 20 by two fixing protrusions 14 and 24, so that the brush The 20 can be maintained in contact with the commutator piece while moving on the mounting plate 10 while being pressurized with a constant force at all times.

According to the present invention described above, by forming a slot-shaped guide grooves on both sides of the brush, the guide plate of the brush is inserted into the mounting plate to form a guide for guiding sliding, using a separate component such as a brush holder Since the brush can be supported to slide on the mounting plate without the need, the number of parts can be reduced and the assembly time can be shortened.

Claims (2)

In a motor for a vehicle provided with a brush for continuously supplying battery electricity to the armature winding through a commutator fixed to the rotor shaft, Guide grooves are formed on both sides of the brush, and the mounting plate on which the brush is mounted is provided with a guide portion into which the guide groove of the brush is inserted. The method of claim 1, The guide part is formed with a first fixing protrusion, and one side of the brush is formed with a second fixing protrusion which is disposed opposite to the first fixing protrusion, a spring is mounted between the first fixing protrusion and the second fixing protrusion. Brush mounting structure of a motor for a vehicle, characterized in that it becomes.