JPS6315651A - Wiper motor - Google Patents

Abstract

PURPOSE:To simplify the lead wire installation work, by making a structure where a motor section wiring and home position stopping mechanism section wiring are integrally drawn out. CONSTITUTION:A wiper motor is composed of a motor section 1 and a home position stopping section 2 which stops the wiper to home position. A casing of this wiper motor is formed by fitting a yoke 4 and a cover 5 to a case body 3. A first terminal block is provided at the junction of the motor section 1 and a home position stopping section 2. A second terminal block 16 is provided on the cover 5 of the home position stopping section 2. The wiring to the motor section 1, together with the wiring to the home position stopping. section 2, is led to the second terminal block 16 and it is connected through the first terminal block to the motor section 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wiper motor that drives a wiper for wiping the windows of a vehicle such as an automobile.

[Prior Art and Problems to be Solved by the Invention] Generally, this type of wiper motor is composed of a motor section and a fixed position stop mechanism section that stops the wiper in a fixed position. Wiring was done by pulling out lead wires from each of the fixed position stop mechanisms, and these were tied together with a coupler. However, some wiring is connected between the motor part and the fixed position stop mechanism part, and as a result, the lead wires from the coupler to the motor part and the fixed position stop mechanism part, and the lead wires between the motor part and the fixed position stop mechanism part are connected. When assembling the wiper motor, there is a lead wire that connects the wiper motor.In addition to the fact that the work of installing the lead wire is extremely complicated and troublesome, the attached lead wire may interfere with the assembly. As a result, work efficiency was extremely poor.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a wiper motor that can eliminate these drawbacks. In a wiper motor consisting of a mechanism section, the wiring drawn out from the motor section side is a second terminal body that passes through the casing and reaches the fixed position stop mechanism section, and the wire is connected to the lid body of the fixed position stop mechanism section. , characterized in that a second terminal body is provided in the cover of the lid body to be in contact with the first terminal plate, and the lead wire is drawn out from the lid body together with the wiring on the fixed position stop v1 structure side. be.

With this configuration, the present invention enables the wiper motor to be assembled without any obstructive lead wires.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, 1 is a motor part on which an armature A is rotatably supported, and 2 is a fixed position stopping mechanism part 2 for stopping the wiper at a fixed position.

The wiper motor consists of a motor part 1 and a fixed position stop mechanism part 2.
However, the casing of this wiper motor is constructed by attaching a yoke 4 to the case body 3 in the motor section 1, and by attaching a lid body 5 to the case body 3 in the fixed position stop mechanism section 2. It is designed to be formed by attaching the .

Reference numeral 6 denotes a holder plate on which three sets of brush holders 7 are integrally provided, and is integrally molded from a resin material.A brush 8, which is housed inside the brush holder 7 so as to be able to move forward and backward, is attached to a bullet machine 8a. Due to the urging force of , it comes into sliding contact with the commutator 9 of the armature A in an elastic manner. A terminal insertion portion 6a is formed on one side of the holder plate 6 so as to protrude in the axial direction, and a first terminal plate (terminal body) 10 is inserted into the insertion portion 6a in a manner corresponding to the number of brushes 8. A total of three pieces are fitted and fixed independently. Lead wires 11 from each brush 8 (those on the battery side are connected via circuit breakers llb) are fixed to these first terminal boards 10, respectively. Then, like this, brush 8, terminal board 1
The holder plate 6 in which the members such as 0 and the like are assembled is attached to the motor part 1 of the case body 3 by means of fixing means such as screws. The terminal board 10 has a guide 3 provided on the wall between the motor section 1 and fixed position stop mechanism section 3 of the case body 3.
It passes through a and faces the fixed position stop mechanism section 2 side.

Further, in the fixed position stop mechanism section 2 of the case body 3, on the case body 3 side, an intermediate gear 12 that meshes with a worm gear lla screwed onto a motor shaft protruding from the motor section 1, and an operating gear that meshes with the intermediate gear 12. 13 are each rotatably supported on a shaft, and a projection 13a is provided protruding from the boss portion of the first operating gear 13.

On the other hand, a mounting plate 14 integrally molded from a resin material is fixed to the lid body 5 using fixing means such as rivets. , 15b are provided. On the other hand, reference numeral 19 denotes a contact unit 1 which is rotatably provided on the lid.
Reference numeral 9 is configured to connect the relay plates 15 and 15a or 15b.

When the lid body 5 is attached to the case body 3, the protrusion 13a is engaged with a locking pawl 19a provided to rotate together with the contact unit 19, and the contact unit is driven by the motor. 19 also rotates, and when the wiper switch is turned off and the wiper is at an intermediate position, the contact unit 19 connects the relay plate 15.15a to maintain motor drive, and the wiper is displaced to the storage position. Then, the contact unit 19 connects the relay plate 15.15b and is grounded, stopping the motor drive, thus forming a fixed position stopping mechanism.

For the mounting of rice, a terminal mounting portion 14a is formed on one surface (the side facing the operating gear) of the plate 14, and a groove 14b is formed on the back surface thereof. A second terminal plate 16 whose tip end is curved into a hook shape is integrally attached to the terminal attachment portion 14a by means such as rivets 17, while a choke coil 20 is attached to the groove 14b. It is accommodated. When the lid 5 is attached to the case body 3 as described above, the second terminal plate 16 comes into contact with the first terminal plate 10 on the motor section 1 side in a pressed manner to establish electrical conduction. Moreover, for this installation, the necessary wiring is done on the plate 14, and a lead wire 18 is drawn out from the lid 5, and a cover is attached to the tip of the lead wire 18. On the battery side wiring, this wiring passes through the first terminal plate 10 and the second terminal plate 16, and is guided by the ribs 14c on the back side to reach the battery side contact plate 15b (B). A lead wire 18 connected to the battery side is connected to this, and the low-speed side wiring (Lo) and high-speed side wiring (Hi) are connected to the rib 14c via the first terminal board 10 and the second terminal board 16, respectively. The installation is guided so as to reach terminals 14c1, 14e provided on the plate 14, from which corresponding lead wires 18 are connected. Further, corresponding lead wires 18 are connected to the contact plates 15 and 15a, and five lead wires 18 in total are drawn out from the lid body 5. Furthermore, in the embodiment, by attaching the lid body 5 described above, the first terminal plate 10 and the second terminal plate 16
When the terminals are brought into contact with each other, both sides of the terminal insertion portion 6a fit into the left and right side walls 14f of the portion 14a to prevent displacement. Moreover, when the lid body 5 is attached, the fixed position stop mechanism section 2 is filled with grease, but a tall rib is provided to prevent this grease from flowing toward the terminal board 10.1G side. 14g is provided so as to protrude so as to cover the intermediate gear 12 as well.

In the embodiment configured as described above, in order to assemble the wiper motor, necessary members such as the brush 8, bullet 8a, first terminal plate 10, etc. are assembled on the case body 3 on the motor section 1 side, All that is required is to attach the holder plate 6 with the necessary wiring, assemble the armature A, and attach the yoke 4 to which the permanent magnet is attached. Incorporates 13.

Further, on the cover body 5, a contact plate 15, a second terminal plate 16. After the parts such as the choke coil 20 are assembled and the necessary wiring is completed, the plate 14 and the contact unit 19 are attached, and the attached lid body 5 is attached.
It is sufficient to cover the fixed position stop mechanism section 2 with a lid, and the assembly of the wiper motor is thus completed.

In this way, in the present invention, the wiper motor can be assembled by assembling the motor section 1 and the fixed position stop mechanism section 2. In this case, the lead wire is connected to the lid body 5.
In other words, in the present invention, the wiring drawn out on the motor part 1 side is the first terminal board 10, and this is connected to the case body 3.
The lead wire 18 is passed through the terminal plate 18, facing the fixed position stop mechanism 2 side, and brought into contact with the second terminal plate 16 provided on the lid body 5 side.
Since the lead wires 18 are drawn out from the lid body 5 along with the wiring on the fixed position stop mechanism section 2 side, only the lead wires 18 are pulled out from the lid body 5. Therefore, the lead wires drawn out from the wiper motor are extremely organized. This structure does not interfere with the assembly of the wiper motor, and the work of attaching the lead wires is extremely simplified, making it possible to significantly improve the efficiency of the assembly work.

Moreover, this device does not provide the choke coil 20 on the motor section 1 side, but on the lid body 5 on the fixed position stop mechanism section 2 side.
Since the motor part 1 is mounted by being accommodated in the recessed groove 14a of the plate 14, the motor part 1 is organized and the ease of assembly is improved, which is convenient.

[Operations and Effects] In short, the present invention is configured as described above, so that the wiring from the motor section reaches the fixed position stopping mechanism section through the first terminal body, and is connected to the fixed position stopping mechanism section along with the wiring of the fixed position stopping mechanism section. It will be pulled out from the lid of the position stop mechanism,
Therefore, the lead wires are not drawn out from the motor part as in the conventional case, but are drawn out from the lid body in a concentrated manner.

Therefore, the work of installing the lead wires is greatly simplified and work efficiency is significantly improved, and the work of assembling the wiper motor is not obstructed by the lead wires.

[Brief explanation of the drawing]

The drawings show an embodiment of the wiper motor according to the present invention, in which Fig. 1 is a front view of the wiper motor, Fig. 2 is a side view of the wiper motor, and Fig. 3 is a side view of the case body viewed from the motor section. Figures 4 and 4 are side views of the case body viewed from the fixed position stop mechanism, Figures 5 A, B, and C are front, top, and rear views of the holder plate, and Figure 6 is a rear view of the lid. , Figure 7A. B is a vertical sectional view and a bottom view of the lid, and FIG. 8 is a circuit diagram of the wiper motor. In the figure, 1 is a motor section, 2 is a fixed position stop mechanism section, 3 is a case body, 3a is a through hole, and 10 is a first terminal plate. 14 is a second terminal board, and 18 is a lead wire. Patent applicant Mitsuba Electric Manufacturing Co., Ltd. Figure 6 1 Wiper switch

Claims (1)

[Claims] In a wiper motor consisting of a motor part and a fixed position stop mechanism part, the wiring drawn out from the motor part side is used as a first terminal body that passes through the casing and reaches the fixed position stop mechanism part. A second terminal body is provided on the lid body of the mechanism section, and the second terminal body is in contact with the first terminal board through the cover of the lid body, and the lead wire is drawn out from the lid body together with the wiring on the fixed position stop mechanism side. Characteristic wiper motor.