JPH0355215Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a push button device for a wiring device such as a switch.

(Prior Art) Conventionally, for example, in wiring devices such as multi-tap devices, devices equipped with a light source such as a neon tube and a switch that blinks the light have been used as a power indicator, energization indicator, night light, etc.

In some wiring devices of this type, it is desirable to make the push button larger from the viewpoint of operability and design of the switch. In this case, which part of the push button,
For example, it is necessary to ensure a good operational feel and on/off operation even when pressing the center, left end, or right end.

By the way, in the conventional push button device having such a relatively large push button, for example, as shown in FIG. A structure is known in which a pair of guide pieces 54 of a push button 53 are moved back and forth along the outside.

In the case of the push button device having the above structure, the larger the gap l between the guide portion 52 of the base 51 and the guide piece 54 of the push button 53, the smoother the push button 53 can move forward and backward. As a result, not only the operating feel of the push button 53 but also the positional shift between the push button 53 and the mechanism that is linked to the push button 53 occurs, causing problems in on/off operations.

Therefore, the gap l needs to be as small as possible; in this case, the base 51 and the push button 53 are often made of synthetic resin;
The dimensions of the gap l change due to variations during manufacturing (variations due to molding conditions, material lot, etc.) and changes during product use (changes due to ambient temperature, humidity, etc., and changes over time of parts).
If the gap l disappears due to these reasons,
Alternatively, if the dimension of the gap l becomes extremely small, the push button 53 will not move forward or backward. Therefore, the dimension of the gap l cannot be made smaller than a certain value, resulting in the above-mentioned problem.

Furthermore, as described in Japanese Utility Model Application Publication No. 61-44333, a pair of guide pieces is provided at a distance from the push button, and a pair of guide parts is formed on the base opposite to the tips of the guide pieces. A structure is known in which a tapered surface is formed facing inward at the tip of each guide piece of the push button.

(Problems to be Solved by the Invention) In the push button device having the structure described in the above-mentioned Japanese Utility Model Publication No. 61-44333, as shown in FIG. 6, when one end of the push button 61 is pressed with force F, the guide piece When the tip of the push button 62 hits the tapered surface 65 formed on the guide portion 64 of the base 63, a rotational moment M acts in a direction to lift the other end of the push button 61 due to the reaction force R, and the push button 61 rises. There is a problem in that the push button 61 is not moved horizontally in parallel, and the push button 61 cannot be operated smoothly.

The present invention has been devised in view of the above-mentioned problems, and it is an object of the present invention to provide a push button device for a wiring device in which the push button can be operated smoothly and reliably.

(Means for Solving the Problems) The push button device of the wiring device of the present invention has a pair of guide parts spaced apart from each other on the base, and a pair of guide parts on the push button that move forward and backward respectively along the outside of the pair of guide parts. In the push button device for wiring equipment provided with guide pieces, the tips of the pair of guide portions of the base are formed into tapered surfaces that are inclined outwardly so as to face the tips of the guide pieces of the push button.

(Function) In the push button device of the wiring device of the present invention, when the push button is pressed, the pair of guide pieces are guided by the tapered surfaces of the pair of guide portions of the base and guided to a predetermined position. When one end of the push button is pressed, when the tip of the guide piece of the push button hits the tapered surface due to a reaction force, a rotational moment is applied that rotates the other end of the push button in the same direction as the one end. The left and right sides move in parallel.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4. This example shows a multi-tap.

Reference numeral 1 denotes a base made of synthetic resin, and on this base 1 are provided a switch mechanism 2, a lamp 3 such as a neon tube that is blinked by the switch mechanism 2, and a blade receiver mechanism 4.

On the base 1, a pair of guide parts 5 for guiding push buttons (to be described later) are provided on both sides of the switch mechanism 2 in a spaced apart protruding manner. is formed.

A synthetic resin cover 7 is fitted onto the base 1, and several screws 8 are inserted from the back side of the base 1.
A horizontally elongated window hole 9 is formed in the upper part of the cover 7 at a position corresponding to the switch mechanism 2, and a horizontally elongated push button 10 made of synthetic resin is fitted into this window hole 9 so as to be able to move forward and backward. are combined. This push button 10 has a pair of guide portions 5 on both inner sides.
A pair of guide pieces 11 that move forward and backward along the outside of the switch mechanism 2 are protruded, and an actuating piece 12 for operating the switch mechanism 2 is protruded from the inner part of the switch, and a stopper piece 13 is provided on the inner peripheral edge. Furthermore, a coil spring 16 is tensioned between the protrusions 14 and 15 on the base 1 and on both sides of the inner side of the push button 10 to bias the push button 10 outward. The leading end moves forward and backward in opposition to the tapered surface 6 of each guide portion 5.

Further, the lamp 3 is housed in a lamp housing section 18 having a through hole 17 in the central part of the front surface of the cover 7, and a display cover 19 made of a translucent synthetic resin is placed on the front surface of the cover 7 to cover the lamp 3.
is locked by inserting the locking claws 20 on both sides into the locking holes 21 on both sides of the cover 7.

Next, the switch mechanism 2 will be explained.
In this switch mechanism 2, the base of a contact plate 24 made of a spring plate is attached to the base 1 with screws 25, a movable contact 26 is formed at the tip of the contact plate 25, and a movable contact 26 is formed at the tip of the contact plate 25. A piece 27 is formed.

Further, a fixed contact 28 is fixed to the movable contact 26 on the base. Further, a synthetic resin rotor 29 is rotatably provided on the base 1 at an intermediate portion of the contact plate 24. This rotor 29 has a gear-shaped engagement protrusion 31 on the outer periphery of a shaft portion 30, and adjacent thereto, actuating protrusions 32 are formed at every other engagement protrusion 31. The actuating protrusion 32 faces the inner surface of the contact plate 24 while facing the actuating piece 12 of the push button 10 .

When the push button 10 is pressed, the actuating piece 12 engages with the engaging protrusion 31 of the rotor 29, rotating the rotor 29 counterclockwise in FIG. 1 one pitch at a time. When the protrusion 32 is located on the lower surface of the contact plate 24, the contact plate 24 is pushed up and the movable contact 26 is separated from the fixed contact 28, resulting in an OFF state, and when the operating protrusion 32 disappears inside the contact plate 24, the contact plate 24 is pushed up. 24 returns with its elasticity, and the movable contact 26 contacts and separates from the fixed contact 28 to be in the on state.

In the blade receiver mechanism 4, a pair of conductive metal fittings 33, 34 are arranged on the base 1, and the pair of conductive metal fittings 33, 34 are connected to three blade receivers 35, 36, respectively.
and one terminal 37, 38 are provided,
In addition, the fixed contact 28 is attached to one of the conductive metal fittings 34.
are integrated. The pair of conductive metal fittings 33 and 34 are fixed to the base 1 with screws 39 and 40, and the blade holders 35 and 36 are connected to plugs formed in pairs on both sides and the bottom of the base 1 and the cover 7, respectively. The terminals 37 and 38 each face the opening 41 and protrude from the back side of the base 1.

Further, the lamp 3 is connected to the contact plate 24 of the switch mechanism 2 and a conductive metal fitting 33 by a lead wire.

Then, when using it, plug the pair of terminals 37 and 38 into an outlet on the wall, etc.
From each pair of plug insertion ports 41 to the blade holders 3
Insert the plug of the branch cord into 5 and 36 and use the branch. Further, if necessary, the push button 10 is pressed to operate the switch mechanism 2 to blink the lamp 3.

Next, the operation of this embodiment will be explained.

When push button 10 is pressed, the pair of guide pieces 1
1 is guided by the tapered surfaces 6 of the pair of guide portions 5 of the base 1 to a predetermined position. As shown in FIG. 4, for example, when one end of the push button 10 is pressed by an external force F, when the tip of the guide piece 11 of the push button 10 hits the tapered surface 6, a reaction force R of the tapered surface 6 is generated. As a result, a rotational moment M is applied in a direction that rotates the other end of the push button 10 in the same direction as the one end, and the left and right sides of the push button 10 operate in parallel.

It should be noted that the switch mechanism 2 is not limited to the structure of the above embodiment, but may have an appropriate structure such as a structure in which contacts are directly pushed.

[Effect of idea]

According to the present invention, since a tapered surface is formed on the guide portion of the base relative to the guide piece of the push button, the gap size between the guide portion and the guide piece is large during the forward and backward movement of the push button, and the operation is smooth. When the push button is pressed, the tapered surface acts on the push button with a rotational moment that causes both ends of the push button to move parallel to each other due to a reaction force, the push button is moved smoothly, the position of the push button is easily stabilized at the normal position, and the push button is interlocked with the push button. The position between it and the mechanism is also determined, so that on/off operations can be performed normally.

[Brief explanation of the drawing]

Fig. 1 is a sectional view corresponding to the part in Fig. 2 showing an embodiment of the device of the present invention, Fig. 2 is a plan view of Fig. 1 with the cover removed, and Fig. 3 is the same as Fig. 1. FIG. 4 is an explanatory view of the same as the above, FIG. 5 is an explanatory view of a conventional push button device, and FIG. 6 is an explanatory view of another conventional push button device. DESCRIPTION OF SYMBOLS 1... Base, 5... Guide part, 6... Taper surface, 10... Push button, 11... Guide piece.

Claims (1)

[Claims for Utility Model Registration] In a push button device for a wiring device, in which a base is provided with a pair of guide portions separated from each other, and a push button is provided with a pair of guide pieces that advance and retreat, respectively, along the outside of the pair of guide portions, A push button device for a wiring device, characterized in that the tips of the pair of guide portions of the base are formed into tapered surfaces that face the tips of each guide piece of the push button and slope outward.