JPH0648709Y2 - Push switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a piano type push-type switch.

<Prior Art> For example, a switch for an automobile radio or air conditioner has a sixth
A push-type switch whose knob 1 is a piano type is used as shown in the figure. In the conventional push-type switch structure, as shown in FIG. 7, a push rod 3 is provided with a knob 1 pivotally supported by a pin 2 and a protrusion 3 is brought into contact with a holding cylinder 4. 5 is slidably provided inside, and a spring 6 for urging the push rod 5 in the direction of the projecting piece 3 is provided.
This is a configuration having an electric switch 7 that is turned on and off.

<Problems to be Solved by the Invention> In the push-type switch as described above, since it is operated by an extremely lightweight operation force, a feeling of moderation of operation is required. For that purpose, a moderating mechanism is built in the electric switch 7 to obtain a moderation feeling as shown in FIG. In this case, since the electric switch 7 has a moderation mechanism built-in, the structure is complicated and the cost is increased. Furthermore, there is a problem that the form of the electric switch 7 becomes large and a large installation space is required.

<Means for Solving the Problems> The present invention has a push piece that is formed on a piano-type knob, and the push piece contacts the push rod to turn ON / OFF the electrical contacts, and pushes the push rod to the projection side. A push-type switch including a biasing spring is provided with a protrusion or a recess on the contact surface of the protrusion of the push rod.

<Operation> With the above structure, the contact action point of the push rod of the projecting piece moves up or down in the protrusion or the recess, thereby providing a feeling of moderation.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a knob slidably supported by a pin 2, and a projecting piece 3 is projectingly provided. A holding cylinder 4 has a push rod 5 and a spring 6 therein. 8 is ON and OF by the push rod 5
It is an electrical contact that is F.

The push rod 5 has a second contact surface 51 of the protruding piece 3.
As shown in the figure, a protrusion 5a is provided, or as shown in FIG. 4, a recess 5b is provided.

Since the present invention has the structure as described above, in the operation stroke of pushing the knob 1 with the fingertip and pushing back with the spring 6, the tip action point of the protrusion 3 moves up and down between ΔH to raise or lower. It passes through the recess 5b. By passing through the step at this time, the protrusions 5a in FIG. 2 transmit the feeling of moderation as shown in FIG. 3 and the recess 5b in FIG. 4 as shown in FIG. 5 to the fingertips.

<Effects of the Invention> As described above, according to the present invention, in order to obtain a detent feeling in operation, the push rod is in contact with the protrusion formed on the knob. The structure of the conventional operation system is not changed, and only the end surface shape of the push rod is completed by simple processing of the protrusions or recesses. Further, since it is not necessary to incorporate a moderation mechanism as in the conventional electric switch, a simple contact structure as shown in FIG. 1 is sufficient, and the space and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention, FIG. 2 is a side view of a push rod, FIG. 3 is a moderation characteristic diagram by the push rod of FIG. 2, and FIG. 4 is a side view showing another embodiment of the push rod. FIGS. 5 and 5 are characteristic views of the click feeling by the push rod of FIG. 4, FIG. 6 is a perspective view of the knob, FIG. 7 is a conventional sectional view, and FIG. 8 is a view of the conventional click feeling characteristic. 1 ... Knob, 3 ... Projection piece, 4 ... Holding tube, 5 ... Push rod, 51 ... Contact surface, 5a ... Projection, 5b ... Recessed section, 6
...... Spring, 8 …… electrical contact.

Claims (1)

[Scope of utility model registration request] 1. A piano type knob is provided with a projecting piece, and the projecting piece is in contact with the push rod for turning on and off an electric contact, and a spring for biasing the push rod toward the projecting side. A push-type switch, characterized in that a protrusion or a recess is provided on the contact surface of the protrusion of the push rod.