JP2691694B2 - Contact plate built-in structure for electric component motors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for incorporating a contact plate of a motor for electrical equipment mounted on a vehicle such as a bus, a truck or a passenger car.

[0002]

2. Description of the Related Art In general,
Some motors for electrical equipment of this type are incorporated, like a wiper motor, so that a contact plate connected to a lead wire comes into contact with a relay plate mounted on the casing side. In this product, if there is a step of assembling the motor after assembling the contact plate, the length of the lead wire may differ depending on the model, which is a hindrance and reduces the work efficiency of the subsequent motor assembling work. is there.

Therefore, as disclosed in Japanese Utility Model Laid-Open No. 55-181472, it is proposed that a lead wire and a contact plate are incorporated into a terminal base material to form a unit, and the unitized body is incorporated into a casing lid. Has been done. However, in this structure, the seat portion projectingly formed on the terminal base is elastically deformed, and the projecting piece of the seat portion is engaged with the small hole formed in the lid body. Since the support is cantilevered and therefore the seat portion is permanently deformed during the work of assembling the terminal base material, it becomes defective, and therefore improvement has been desired.

On the other hand, as shown in Japanese Utility Model Laid-Open No. 61-152558, the engaging claws provided on the terminal base material are engaged with the assembling holes formed in the lid body in a forcible manner (a dovetail groove shape). I once proposed that the terminal base material should be prevented from coming off by stopping it so that the terminal base material can be attached by one-touch. Since this is one in which the terminal base material is attached from the direction facing the plate surface of the relay plate, a short contact plate does not cause much problem, but when it is long as shown in FIG.
The contact plate 10 must be pressed against the relay plate 11a planted on the gear 11 and fitted into the relay plate 11a in a curved state, and as a result, the contact plate 10 may be deformed. The attached terminal base material 12 always acts in such a direction that the elastic reaction force from the contact plate 10 always escapes from the built-in hole,
For this reason, it is necessary to separately take a retaining means to ensure reliability.

[0005]

DISCLOSURE OF THE INVENTION The present invention was conceived with the object of providing a structure for incorporating a contact plate of a motor for electrical equipment, which is capable of eliminating these drawbacks in view of the above circumstances. The contact plate that comes into contact with the relay plate built into the casing and the lead wire connected to the terminal substrate that has been assembled into a unit, and the relay plate In assembling by inserting from the direction along the surface, the terminal base material, while protruding the contact plate from the first half of the insertion direction,
The casing has a support part that supports the inserted first half of the terminal base material from above and below, and a locking part that locks the rear end edge of the terminal member in the insertion direction to prevent it from slipping out on the opposite side in the insertion direction. It is characterized in that a step portion is provided.

According to the present invention, the work of assembling the motor can be simplified without being hindered by the lead wire.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a terminal base material, and the terminal base material 1 is a base 2 formed of an insulating resin material in a substantially square shape, and a contact plate 3 in which an intermediate portion is embedded in the base 2. And a lead wire 4 connected to the contact plate 3. That is, the contact plate 3 is inserted into the casing for the wiper motor as will be described later and assembled, but the lead wire connecting portion 3a and the contact portion 3b are provided at the base half of the contact plate 3 at the first half position in the inserting direction of the contact plate 3. The lead wires 4 project upward and downward from the upper and lower surfaces, respectively, and the tip end portions of the lead wires 4 are connected by soldering to the lead wire connecting portions 3a that project upward. On the other hand, the contact portion 3b
Is projected from the lower end of the projecting portion 2a on the lower surface of the base, is bent toward the front in the insertion direction, and the contact portion 3c is bent and formed at the tip thereof. Further, a folding piece 2d having first and second folding grooves 2b, 2c is formed integrally with the base end portion of the base 2 in the inserting direction so as to extend, and the folding piece 2d is formed. , The lead wire connecting portion 3
Both of the folding grooves 2b and 2c can be folded over the base 2 so as to cover a from above. A partition wall 2f is provided between the lead wire connecting portions 3a of the base 2 so as to insulate each other and serve as a receiver when the folding piece 2d is folded.

On the other hand, 5 is a casing to which the terminal base material 1 is attached. The casing 5 has a yoke 6 in which an armature core (not shown) is incorporated, various members such as an output shaft 7 for driving the wiper. The relay plate 8a, which is planted on the gear 8 with which the contact plate 3 is in sliding contact, is installed together with the device, and the terminal base material 1 for that is installed in the casing 5 on the side surface of the relay plate 8a as follows. It has become. That is, the casing 5 is provided with an assembling hole 5a for incorporating the terminal base material 1, and the terminal base material 1 is in a direction substantially along the plate surface of the relay plate 8a (direction substantially orthogonal to the output shaft 7). The mounting holes 5a are inserted into the mounting holes 5a, and the mounting holes 5a include side surface receiving portions 5b that receive the left and right end surfaces of the base 2, left and right bottom surface receiving portions 5c that receive the left and right bottom surfaces of the base 2, and the mounting holes. An upper surface receiving portion 5d, which is formed to extend from the leading edge of the inserting direction of 5a so as to cover substantially the first half of the inserting hole 5a in the inserting direction and receives the upper surface of the folded piece 2d, and a bottom surface on the rear end side in the inserting direction. A rear bottom surface receiving portion 5e is formed, and a retaining portion 5f that comes into contact with the end surface of the thin portion 2e of the base 2 that is formed stepwise with respect to the rear bottom surface receiving portion 5e is formed. Then, as shown in FIG. 8, the terminal base material 1 moves in the direction of the arrow A to mount the contact portion 3b of the contact plate 3 in the mounting hole 5a.
After inserting it in the direction of arrow B, that is, the relay plate 8a
Is moved in a direction substantially along the plate surface of the base 2, and the thin portion 2e of the base 2 is elastically deformed slightly upward and is inserted into a position where it is locked to the retaining portion 5f. In this case, the tip end edge of the upper surface receiving portion 5d is set to have a size that protrudes to a position closer to the insertion direction than the protruding position of the contact portion 3b.

In the embodiment of the present invention constructed as described above, when the unitized terminal base material 1 is assembled in the casing 5, the terminal base material 1 has the contact plate 3 in the mounting hole 5a as described above. When the relay plate 8a is inserted, it is assembled by moving it in a direction substantially along the plate surface of the relay plate 8a, and thus the relay plate 8a is assembled by inserting it in a direction facing the plate surface. The contact plate 3 can be protected without being bent excessively.

As described above, in the embodiment of the present invention, the terminal base material 1 is inserted in a direction substantially along the plate surface of the relay plate 8a to be assembled. In the base 2, the contact portion 3b, which is in sliding contact with the relay plate 8a of the contact plate 3 in the elastically deformed state, protrudes from the first half portion in the insertion direction. This first half portion is contacted by the upper surface receiving portion 5d. It is received and supported to a position closer to the insertion direction than the protruding position. For this reason, the elastic restoring force F1 of the contact portion 3b, which comes into sliding contact with the relay plate 8a in an elastically deformed state, works to lift the base 2 upward, and therefore the terminal base material 1 acts on the contact portion 3b on which the elastic restoring force F1 acts. The projecting position is the force point, the tip of the upper surface receiving portion 5d supporting the folding piece 2d abutting the tip of the partition wall 2f erected on the base 2 is the fulcrum O, and the rear edge of the base 2 is the acting point. As a result, the rear edge of the base 2 is pressed by the rear bottom surface receiving portion 5e, and the retaining portion 5
It is possible to prevent accidentally getting over f and coming off.
Even with a simple locking structure, reliable removal prevention is performed.

In addition, in this structure, the lead wire connecting portion 3a of the terminal base material 1 is connected (soldered) to the lead wire 4 with the folded piece 2d being flat, and the folded piece 2d is folded in when assembled. As a result, since the connection portion with the lead wire 4 is incorporated in a state of being covered and protected, the connection work is not troublesome while the connection portion 3a is effectively protected and the workability is improved. It will be able to be measured.

It should be noted that the present invention is not limited to the above embodiment, but can be implemented without a folding piece, and in the case where there is a folding piece, FIG.
As in the second embodiment shown in Fig. 3, the folding piece 2d has a portion corresponding to the second folding groove on the tip side in the first embodiment previously bent, and the cover body 9 without the second folding groove is formed. It is also possible to increase the strength of the folding piece in this case.

[0013]

In summary, since the present invention is constructed as described above, the terminal base material is incorporated in the casing by inserting the contact plate by moving the contact plate in a direction substantially along the plate surface of the relay plate. Therefore, unlike a conventional contact plate that is inserted by force-fitting in a direction toward the plate surface of the relay plate to be mounted, the contact plate does not deform by sliding in contact with the relay plate in a pressing state, The contact plate can be protected. Then, the terminal base material inserted from the direction facing the plate surface of the relay plate receives the elastic restoring force directed upward of the elastically deformed contact plate on the first half side in the insertion direction, and the rear edge side faces downward. As a result, the terminal base material may be a locking step portion that restricts the movement of the rear end edge to the opposite side in the insertion direction, which simplifies the structure and facilitates the assembling work.

[Brief description of the drawings]

FIG. 1 is a plan view of a wiper motor.

FIG. 2 is a plan view of the casing showing a state before the terminal base material is assembled.

3A is a sectional view taken along line AA of FIG. 2, and FIG. 3B is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view of the casing showing a state after the terminal base material is assembled.

5A is a sectional view taken along line AA of FIG. 4, and FIG. 5B is a sectional view taken along line BB of FIG.

FIG. 6 is a perspective view of a terminal base material.

7A is a side view of the terminal base material, FIG. 7B is a plan view of the terminal base material, and FIG. 7C is a front view of the terminal base material.

FIG. 8 is an explanatory view showing a procedure of assembling a terminal base material into a casing.

FIG. 9 is a front view of a terminal base material showing a second embodiment.

FIG. 10 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal base material 2 Base 2d Folding piece 3 Contact plate 3a Lead wire connection part 3b Contact part 3c Contact part 4 Lead wire 5 Casing 5a Installation hole 5d Top receiving part 5f Retaining part 8a Relay plate

Claims (2)

(57) [Claims] 1. A terminal base material, in which a contact plate contacting a relay plate incorporated in a casing and a lead wire are connected to each other, is incorporated into a unit, and a terminal base material is relayed to an incorporation hole opened on the casing side. When inserting by inserting from the direction along the plate surface of the plate, the terminal base makes the contact plate protrude from the first half of the insertion direction, while the casing holds the inserted first half of the terminal base from above and below. Of the motor for electrical equipment, comprising: a support portion that supports the terminal member in a circular shape; and a locking step portion that locks at a rear end edge of the terminal member in the insertion direction and restricts removal to the opposite side in the insertion direction. Contact plate built-in structure. 2. The terminal base material according to claim 1, wherein the terminal base member is provided with a foldable piece projecting foldably from a tip end in the insertion direction so as to cover the connection portion between the contact plate and the lead wire. Contact plate built-in structure for electric component motors.