JPH09102242A - Pushbutton switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the merchandise properties of a pushbutton switch without making the operator feel disagreeable with vibration caused by tipping during operation, even if the amount by which a key top projects from a panel surface is large compared with an outside diameter. SOLUTION: A transverse oscillation preventing boss 6 sandwiched between a panel 2 and a base 3 is provided on one of the extension lines of the centerline of a key top, and a longitudinal oscillation preventing slider 7 by which the outside diameter of a longitudinal oscillation preventing boss 2c provided on the back of the panel 2 is sandwiched between two planes that are parallel at least to the centerline is provided on the other extension line of the centerline. Thus even when the key top 5 that projects by a large amount from the panel 2 as compared with the outside diameter is employed, the transverse oscillation preventing boss 6 prevents its movement toward the centerline, and the longitudinal oscillation preventing boss 7 prevents its movement in a direction perpendicular to the centerline, thus preventing vibration during operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch provided for operating electric equipment and electronic equipment such as office automation equipment and home appliances, and more particularly to a panel whose key top corresponds to the outer diameter. The present invention relates to a push button switch which has a large amount of protrusion from the surface and is apt to shake on the key top during operation.

[0002]

2. Description of the Related Art As a conventional push button switch of this type, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 2-111022, in which a hinge is extended from a boss held between a panel and a substrate, and The key top facing the opening is supported, and a switch unit is installed on the back surface of the key top. When the key top is operated, the hinge bends to operate the switch unit.

[0003]

However, in the structure of the conventional push button switch described above, when the ratio of the protrusion amount of the key top from the panel surface to the outer diameter is large, When a force including a lateral component is applied at the time of operation as shown in Fig. 5, a shake that tilts in the lateral direction is generated, which causes a problem that the operator feels uncomfortable and the commercialability is deteriorated. It was supposed to be an issue.

[0004]

As a concrete means for solving the above-mentioned conventional problems, the present invention provides a panel provided with an opening and a panel provided on the back surface of the panel corresponding to the opening. In a push button switch button in which a switch unit is mounted on the board and a key top facing the opening of the panel, and a protrusion amount from the panel surface is set to be large with respect to an outer diameter of the key top, On one extension line of the center line in the planar shape of the top, a lateral shake prevention boss that is sandwiched between the panel and the substrate to prevent the key top from moving in the center line direction is provided. The outer diameter of the vertical shake prevention boss provided on the back surface of the panel is sandwiched by at least two surfaces parallel to the center line on the extension line of the vertical shake that prevents the key top from moving in the direction orthogonal to the center line. It solves the problem by providing a push button switch characterized in that the stop slider is provided.

[0005]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIGS. 1 and 2 is a push button switch according to the present invention. The push button switch 1 includes a panel 2 having an opening 2a,
A conventional example is that the panel 2 is provided on the back surface of the panel 2 and the switch unit 4 is mounted at a position corresponding to the opening 2a, and the key top 5 facing the opening 2a. Is the same as.

Further, in the push button switch 1,
The key top 5 is formed, for example, in a cylindrical shape,
The ratio of the amount of protrusion L from the surface of the panel 2 to the outer diameter D is set to, for example, 1 or more, which is larger than that normally used for this type of push button switch 1 and causes a shake during operation. It is made easy to occur.

Here, in the present invention, the horizontal shake preventing boss 6 and the vertical shake preventing slider 7 are provided on the key top 5 to prevent the shake during the above-described operation. Both the boss 6 and the vertical shake prevention slider 7 are provided on an extension of the center line CL in the planar shape of the key top 5, as shown in FIG.

The lateral shake preventing boss 6 is provided on one extension line of the center line CL, and the panel 2
It is similar to the conventional example in that it is sandwiched between the substrate 3 and the substrate 3 and fixed, but positioning holes 6a corresponding to at least two positioning bosses 2b provided on the panel 2 are provided. An accurate position is given to the vertical shake prevention slider 7, which will be described later.

The lateral vibration preventing boss 6 and the key top 5 are provided.
For example, a band-shaped hinge 8 is connected between the key and the key, and when the key top 5 is operated, the hinge 8 bends to give the key top 5 a stroke for operating the switch unit 4.

The vertical shake prevention slider 7 is provided on another extension line of the center line CL, that is, on the side opposite to the horizontal shake prevention boss 6, and the vertical shake prevention slider 7 has A slit portion 7a having a substantially U shape corresponding to the center line CL is provided, and the outer diameter of the vertical shake prevention boss 2c provided on the back surface of the panel 2 is sandwiched by two surfaces parallel to the center line CL. The key top 5 slides with the stroke when the key top 5 is operated.

Next, the operation and effect of the push button switch 1 of the present invention having the above structure will be described. First,
The key top 5 is sandwiched between the panel 2 and the substrate 3, and is connected by the hinge 8 to the lateral shake preventing boss 6 which is also fixed by the positioning boss 2b and the positioning hole 6a. Movement in the direction along the line CL is prevented.

At the same time, the key top 5 is attached to a vertical shake prevention slider 7 having a slit portion 7a that sandwiches the outer diameter of the vertical shake prevention boss 2c provided on the panel 2 on two surfaces parallel to the center line CL. Since it is also connected to the center line C
Movement in a direction orthogonal to L is also prevented.

Therefore, even when the force for operating the key top 5 includes a lateral component, the lateral shake preventing boss 6 and the vertical shake preventing slider 7 oppose each other, which occurs in the conventional example. The shaking of the key top 5 as described above is prevented, and the discomfort during operation is eliminated.

FIG. 4 shows another embodiment of the present invention. In the previous embodiment, the hinge 8 is formed in the shape of a strip, which allows the key top 5 to be flexed when it is operated. In order to deal with this, the slit portion 7a is supposed to sandwich the outer diameter of the vertical shake prevention boss 2c only on two surfaces parallel to the center line CL.

On the other hand, in this embodiment, the hinge 81 is used.
Is formed in a folded shape as shown in the drawing, so that the key top 5 is not substantially tilted when the key top 5 is operated. It is designed to come into contact with the diameter over the entire surface.

By doing so, the resistance force to the lateral component of the force when operating the key top 5 is further improved, and it is possible to more reliably prevent the shaking.
The operations and effects other than those described above are the same as those of the previous embodiment, and therefore detailed description thereof is omitted here.

[0017]

As described above, according to the present invention, one side of the center line in the planar shape of the key top is sandwiched by the panel and the substrate to prevent the key top from moving in the center line direction. An anti-vibration boss is provided, and the outside diameter of the vertical anti-vibration boss provided on the back surface of the panel is sandwiched by at least two surfaces parallel to the center line on the other extension line of the center line. By adopting a push button switch equipped with a vertical shake prevention slider that prevents movement in the orthogonal direction, even when a key top with a large ratio of the protrusion amount from the panel to the outer diameter is adopted, The horizontal shake prevention boss prevents movement, and the vertical shake prevention slider prevents movement in the direction orthogonal to the center line to prevent shaking during operation, so that the operator does not feel discomfort. , This kind of push In which exhibits an extremely excellent effect in improving the marketability of the button switch.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a push button switch according to the present invention in an exploded state.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view showing a main part of the same embodiment.

FIG. 4 is a plan view showing another embodiment of the push button switch according to the present invention as a main part.

[Explanation of symbols]

 1 …… Push button switch 2 …… Panel 2a …… Opening 2b …… Positioning boss 2c …… Vertical shake prevention boss 3 …… Substrate 4 …… Switch unit 5 …… Key top 6 …… Horizontal shake prevention boss 6a …… Positioning holes 7, 71 ... Vertical shake prevention sliders 7a, 71a ... Slits 8, 81 ... Hinge D ... Key top outer diameter L ... Key top projection amount CL ... Center line

Claims (1)

[Claims] 1. A key top comprising: a panel provided with an opening; a substrate installed on the back surface of the panel, on which a switch unit is mounted corresponding to the opening; and a key top facing the opening of the panel. In the push button switch button in which the amount of protrusion from the panel surface is set to be larger than the outer diameter of the key top, the key is sandwiched between the panel and the board on one extension line of the center line in the planar shape of the key top. A horizontal shake prevention boss for preventing movement of the top in the direction of the center line is provided, and at least the outer diameter of the vertical shake prevention boss provided on the back surface of the panel is provided on the other extension line of the center line. A push button switch characterized in that it is provided with a vertical shake prevention slider that prevents the key top from moving in a direction orthogonal to the center line of the key top sandwiched between the two surfaces parallel to the line.