JP2522752Y2 - Horn switch movable contact plate - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable contact plate which is a component of a horn switch of a vehicle steering wheel.

[0002]

2. Description of the Related Art A conductive leaf spring is used as a movable contact plate as a horn switch of a steering wheel for a vehicle. When a horn pad is pressed down, the leaf spring is elastically deformed by the lowering of the horn pad and the contact is made. There is a type in which a piece abuts on the upper surface of a conductive movable contact plate, thereby forming a horn energizing path to make the horn sound.

Conventionally, as a leaf spring type movable contact plate of this type, four conductive leaf springs having a substantially H-shape viewed from above are provided so that four movable contact plates can contact the upper surface of the conductive fixed contact plate. A configuration is known in which a contact piece is provided, four ends are cantilevered, and one contact piece is provided at each end (for example, Japanese Utility Model Laid-Open No. 1-68635). Gazette.).

[0004]

However, according to the above-mentioned conventional movable contact plate, there are problems that the number of the contact pieces is large because the number of the contact pieces is four, and that the plate is poor in the H-shape. Was.

[0005] It is an object of the present invention to solve the above-mentioned problems and to reduce the number of contact pieces and improve the stripping.

[0006]

Means for Solving the Problems In order to solve the above problems,
The movable contact plate of the horn switch according to the present invention has three contact pieces that can contact the upper surface of the conductive fixed contact plate with respect to one conductive leaf spring having a substantially V-shape viewed from above. A movable contact plate of a horn switch, wherein the leaf spring has cantilever at both ends and a support beam at both ends, and has one contact piece at each of both ends and the middle. It is characterized by being provided.

[0007]

According to the movable contact plate of the horn switch according to the present invention, since the number of the contact pieces is three, the number of the contact pieces can be reduced, and the shape of the leaf spring is substantially V.
Since it is shaped like a letter, stripping is improved.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

The movable contact plate of the horn switch according to this embodiment is a component of the horn switch H of the steering wheel W shown in a plan view in FIG.

The horn switch H has a horn pad 3 composed of a soft cover body 2 having a hard resin as an insert 1 as shown in FIG. 6 which is a sectional view taken along the line CC of FIG.

A conductive fixed contact plate 4 made of sheet metal is integrally attached to the horn pad 3. That is, the four locking holes 5 of the fixed contact plate 4,
5, 5 and 5 (FIG. 1), four locking legs 6 of the insert 1,
6, 6, 6 are inserted (see EE in FIG. 9).
In FIG. 8 which is a cross-sectional view taken along the line, the mounting leg 8 of the insert 1 is inserted into the mounting hole 7 at the center of the fixed contact plate 4, and the plate 10 for preventing removal is attached with the screw 9.
The fixed contact plate 4 is integrated with the horn pad 3 by screwing to the horn pad 3. Then, another locking leg 11 screwed to the fixed contact plate 4 is inserted into the locking hole 13 of the lower cover 12 and locked, so that
The fixed contact plate 4 integrated with the horn pad 3 as described above is attached to the lower cover 12 (see FIG. 7, which is a cross-sectional view taken along line DD in FIG. 9).

Here, the insert 1 and the fixed contact plate 4 are connected to a movable contact plate 14 to be described later.
Are always received in the direction of separation from each other due to the spring elasticity of the movable contact plate 14.
5 and 15 are separated from the fixed contact plate 4. When the horn pad 3 is operated, the locking leg 6 can move downward in the locking hole 5, the insert 1 pushes down the movable contact plate 14, and the contact piece 15 can contact the upper surface of the fixed contact plate 4. It is configured as follows.

The fixed contact plate 4 is electrically connected to a steering wheel core 18 via a pair of conductive engaging members 16 and 17.

On the upper surface of the fixed contact plate 4, FIG.
The movable contact plate 14 is attached to the mounting member 1 as shown in FIG.
9 and 19 are electrically insulated and attached. 2 is a perspective view, FIG. 3 is a plan view, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB in FIG. As shown in FIG. 5, three contact pieces 15, 15, 15 are arranged on one conductive leaf spring 20 having a substantially V-shape when viewed from above. The leaf spring 20 has both ends 20a, 20a cantilevered, and the middle part 20b has both ends supported beams.
When a pressing load is applied to the horn pad 3 of the horn switch H configured as described above, in which the contact pieces 15 are disposed one by one at both ends 20a and the intermediate portion 20b, the locking legs 6 of the insert 1 Moves downward in the locking hole 5 against the urging force of the leaf spring 20, the leaf spring 20 is elastically deformed, and the contact piece 15 comes into contact with the upper surface of the fixed contact plate 4, thereby forming a horn conduction path. The horn sounds.

As described above, according to the movable contact plate 14 of the horn switch H according to this embodiment, since there are three contact pieces 15, the cost can be reduced by reducing the number of contact pieces. Further, since the shape of the leaf spring 20 is substantially V-shaped, it is possible to perform the plate removal as shown in FIG.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which a movable contact plate according to one embodiment is mounted on an upper surface of a fixed contact plate.

FIG. 2 is a perspective view of the movable contact plate.

FIG. 3 is a plan view of the same.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 3;

6 is a cross-sectional view of the steering wheel to which the movable contact plate is applied, and is a cross-sectional view taken along line CC in FIG. 9;

FIG. 7 is a sectional view taken along the line DD shown in FIG. 9;

8 is a sectional view taken along line EE shown in FIG. 9;

FIG. 9 is a plan view of the steering wheel.

FIG. 10 is a plan view showing the removal of a leaf spring of the movable contact plate.

[Explanation of symbols]

 H Horn switch 4 Fixed contact plate 14 Movable contact plate 15 Contact piece 20 Leaf spring 20a Both ends 20b Middle part

Claims (1)

(57) [Scope of request for utility model registration] 1. A movable horn switch in which three contact pieces capable of contacting the upper surface of a conductive fixed contact plate are arranged for one conductive leaf spring having a substantially V-shape viewed from above. A contact plate, wherein the leaf spring has cantilevered ends at both ends, a mid-side support beam at both ends, and the contact pieces are arranged at both ends and at an intermediate portion, respectively. The movable contact plate of the horn switch.