JPH0218501Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a push-button switch device, and more particularly to a push-button switch device having a relatively long key top with an operating surface.

In desktop electronic computers, key tops with relatively long operation surfaces are sometimes used in addition to regular key tops, which are often more convenient for calculation operations.

With such a key top with a relatively long operating surface, the key top tends to tilt, especially when the end of the key top is pressed. To prevent this, a stabilizing rod made of a metal rod is used. When installing the rod, it is common to prepare a stable rod mounting member that is separate from the push button switch, install this on a printed circuit board, etc., and then install the stable rod. It requires a stable rod mounting member, which increases the number of parts, resulting in high cost and poor productivity.In addition, it requires a space for the stable rod mounting member, which has the disadvantage of not being suitable for miniaturization. .

The present invention aims to solve the above-mentioned drawbacks, and the present invention will be explained below based on one embodiment shown in the drawings. 1 is a push button switch, and the push button switch has an operating rod 2 movably attached. A spring for returning the operating lever and a switching mechanism (not shown) are built into the insulating casing 3.

4 is a switch terminal protruding below the housing 3;
5 is a recess provided on the lower surface of the housing 3; 6 is a relatively long key top with a relatively long operating surface attached to the operating rod 2; the key top has an umbrella-shaped pressing surface portion 6a for pressing; It consists of a pair of L-shaped hooks 6b located on opposite sides and at the ends of the key top 6.

7 is a C-shaped stabilizing rod made of a bar member, and 8 is a printed circuit board having a wiring pattern 9 on one side.

To attach the stabilizing rod 7, as shown in FIGS. 2 and 3, one side 7a of the C-shaped stabilizing rod 7 is
The key top 6 is positioned within the recess 5 provided on the lower surface of the housing 3, and the opposite side 7b of the stabilizing rod 7 is placed inside the key top 6.
Next, the lower surface of the housing 3 is placed on the printed circuit board 8, the switch terminal 4 is soldered to the wiring pattern 9 of the printed circuit board 8, and the push button switch 1 is turned on. When attached to the printed circuit board 8, the stabilizing rod 7 is sandwiched between the housing 3 and the printed circuit board 8, and the attachment is completed.

When the pressing surface 6a of the key top 6 is pressed against the return spring built into the housing 3, the operating rod 2 also moves downward, thereby switching the switch. The stabilizing rod 7 rotates around the recess 5 of the housing 3 while supporting the key top 6. Therefore, even if the end of the key top 6 is pressed, the key top 6 cannot be moved without tilting. can.

Furthermore, when the key top 6 is released, the operating rod 2 is returned to the position before being pressed by the built-in return spring, and the switch is switched.
The stabilizing rod 7 latched by the key top 6 also
When the key top 6 returns, the original state is restored.

That is, according to the present invention, the hooking portion 6b of the key top 6 attached to the operating rod 2 and the recess 5 of the housing 3
One side 7a of the stabilizing rod 7 surrounds the housing 3 between
Since the stabilizing rod 7 is attached by latching the opposite side 7b, there is no need for a separate stabilizing rod mounting member from the push button switch 1, and since the stabilizing rod is attached to the push button switch alone, it is easy to install. , easy to remove. Therefore, not only the number of parts is small, the cost is low, and the productivity is good, but also the space factor is good and a compact product can be obtained.

In the above embodiments, the stabilizing rod 7 is described as having a C shape, but it may be of a □ type, a square type, etc., and it goes without saying that a panel or the like may be used instead of the printed circuit board 8. be.

[Brief explanation of the drawing]

1 is a perspective view of a push button switch, FIG. 2 is a sectional side view of the main part showing the push button switch in an attached state, and FIG. 3 is a sectional front view of the main part. DESCRIPTION OF SYMBOLS 1...Push button switch, 2...Operation rod, 3...Housing, 5...Recess, 6...Key top, 6a...Press surface part, 6b...Latching part, 7...Stabilizing rod, 7a...
...One side, 7b... Opposite side, 8... Printed circuit board.

Claims (1)

[Scope of Claim for Utility Model Registration] A push button switch having a casing to which an operating rod is movably attached and a terminal protruding from the bottom surface of the casing;
A substantially C-shaped stabilizing rod having one side and an opposite side, a key top having a hook part for latching the opposite side of the stable rod and fitted to the operating rod, and a terminal of the push button switch are soldered. A recess is provided in the lower surface of the casing of the push button switch, and the opposite side of the stabilizing rod is latched to the latching part of the key top, and one side of the stabilizing rod is fitted into the recess of the casing. 1. A push button switch device, characterized in that a terminal of said push button switch is soldered to said printed circuit board so as to be sandwiched between said push button switch and said printed circuit board.