JPH0431715Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a switch that can switch contacts depending on the operating direction of the knob.

[Conventional technology]

2. Description of the Related Art In recent years, switches such as remote control mirror switches for automobiles whose contacts change depending on the operating direction of a knob have come into widespread use.

However, since the knob is a movable member, the fitting dimension between the knob and the case member housing the knob cannot be made too tight, and the fitting must be made with some margin. On the other hand, in the neutral position, there is no guide part between the knob and the case member that regulates the operating direction of the knob.
The drawback was that the knob had some looseness in the direction of rotation.
Furthermore, although it is possible to control the direction of rotation of the knob to some extent through spring holders, movable plates, guide plates, case members, etc., the number of parts involved is large and the stacking tolerance becomes large. It was not possible to prevent the backlash from occurring, and this was a cause of erroneous operation.

[Problem that the invention attempts to solve]

The present invention has been proposed in consideration of the above-mentioned conventional drawbacks, and aims to provide a switch that does not generate any play in the rotational direction of the knob and can maintain stable operability even after long-term use.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention locks a presser plate made of an elastic material to the case member that holds the shaft of the knob, and also attaches the end tongue of the arm of the presser plate that extends in the operating direction of the knob to the knob. It is characterized in that the switch is configured by being press-locked into a holding arm which is opened in a V-shape and is provided on the inner wall of the head of the device.

[Effect]

Since the switch of the present invention is constructed as described above, the knob is prevented from moving in the rotational direction by the press plate, both in the neutral position and during operation, and the operation direction is restricted. That will happen. Further, since the end tongue piece of the arm of the presser plate is press-locked within the clamping arm provided on the inner wall of the head of the knob, there is no play between the two members. or,
Since the clamping arm has a V-shaped opening, even if the operating direction of the knob changes by 90 degrees, the tip of the holding plate arm will not be twisted to the extent that it will adversely affect the operability of the knob. There isn't.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

FIG. 1 is a longitudinal sectional view of a switch showing an embodiment of the present invention, and FIGS. 2 and 3 are taken along the arrow A-A line and the arrow B-B line in FIG. 1, respectively. FIG.

In the figure, reference numeral 1 denotes a case member constituting the main body of the switch, and a knob 2 is set in the groove of the case member. 3
is a shaft portion of the knob 2, on which a spring guide 4 is attached to the upper end and a spring receiver 5 is attached to the lower end, and a spring 6 is interposed between the spring guide 4 and the spring receiver 5. A movable plate 7 has a spring receiver 5 accommodated in a cylindrical groove, and its outer periphery is guided and held by a guide plate 8. 9 is a contact provided on the bottom of the movable platen 7, and when the knob 2 is operated, the contact 10 on the board at the bottom of the switch body is
are becoming selectively connected. Reference numeral 11 denotes a presser plate made of an elastic material, and its center portion is locked to the case member 1 that holds the shaft portion 3 of the knob 2. 12 is a presser plate 11 extending in the operating direction of the knob 2;
The tip tongue piece 13 of the arm is press-locked into a clamping arm 14 provided in the inner wall of the head of the knob 2 and opening in a V-shape. In the switch of the present invention having the above configuration, for example, the performance of the presser plate 11 as a leaf spring is such that the spring constant is reduced so that the load constantly applied to the knob 2 is about 50 g, and the load when the knob 2 is operated is about 100 g. The difference in operating force when operating the knob 2 in the other direction is kept as small as possible.

Further, when the knob 2 is operated in the other direction, the tip tongue piece 13 of the arm 12 of the presser plate 11 tends to be twisted by the clamping arm 14 provided on the knob 2, but the clamping arm 14 has a V-shaped taper. Because it is attached, the clamping arm 14
The degree of twisting of the tip tongue piece 14 pressed and locked inside is small, and the operability of the knob 2 is not adversely affected.

Further, the end tongue piece 13 of the presser plate 11 is pressed and locked in the opening of the clamping arm 14 which is opened in a V-shape by elastic force, and the center part of the presser plate 11
For example, because it is press-fitted and locked,
There is no play in the rotational direction of the knob 2.

In addition, in this embodiment, the arm 1 is attached to the presser plate 11.
Although two knobs 2 are provided, the number may be three or four depending on the operating direction of the knob 2.

Further, the present invention is not limited to the illustrated embodiment, and the shapes of the case member 1, knob 2, presser plate 11, etc. can be changed as desired.

[Effect of idea]

As specifically explained above, according to the switch of the present invention, there is no play in the rotational direction of the knob, and stable performance can be maintained even when used for a long time, and there is no risk of malfunction. do not have. or,
The structure is extremely simple and can be manufactured at low cost since it is only necessary to attach a holding plate and a clamping arm to a conventional switch. It has many advantages such as, and can provide an extremely effective switch in practice.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a switch showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a sectional view in the direction of the arrow in FIG. FIG. 3 is a cross-sectional view taken along line B-B. 1...Case member, 2...Knob, 3...Shaft part,
4...Spring guide, 5...Spring holder,
6... Spring, 7... Movable plate, 8... Guide plate, 9... Contact, 10... Contact, 11... Holding plate, 12... Arm, 13... Tip tongue piece, 14... Clamping arm .

Claims (1)

[Scope of utility model registration request] A presser plate made of an elastic material is locked to the case member that holds the shaft of the knob, and the end tongue piece of the arm of the presser plate that extends in the operating direction of the knob is attached to the inner wall of the head of the knob in a V-shape. A switch characterized by being press-locked in a clamping arm that opens.