JPS6039953Y2 - Push switch operating mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the operating mechanism of a switch, and particularly relates to an improvement of the operating mechanism of a bushing switch.

Many mechanical switches are used in electronic devices, but due to the internal layout structure of the electronic device, the switch body may have to be built into the center of the device.

In this case, a button for operating the switch must be provided on the operation panel, so a connecting rod 1 is used as shown in FIG. 1 to mechanically communicate the switch body and the operation button.

That is, a connecting rod 1 is provided, into which the central shaft of the armature actuator 3 of the bushing switch 2 is inserted and fitted at one end.

A push button 4 is attached to the other end of this connecting rod 1, and an operation panel 5
is prominently located.

The main body of the switch 2 is then fixed to an appropriate location on the chassis of the device or the like using an L-shaped mounting bracket 6.

Reference numeral 7 denotes a spring that provides the armature 3 with a restoring force.

Therefore, in the configuration shown in FIG. 1, the central axis of the armature 3, the connecting rod 1, and the push button 4 are all located on the same straight line and are each firmly fixed by the connecting rod.

Therefore, if the mounting position of the push button deviates due to an error in the processing of the panel, unreasonable force will be applied to the switch 2, which is undesirable.

Therefore, it is necessary to provide a tolerance for the mounting hole of the operation panel, and as a result, a gap is created between the operation button and the mounting hole, resulting in poor operability.

SUMMARY OF THE INVENTION The object of the present invention is to provide an operating mechanism for a bushing switch that eliminates the above-mentioned drawbacks and is simple in structure and easy to assemble.

The present invention will be explained below with reference to the drawings.

Figure 2 is a perspective view showing an embodiment of the present invention, Figure 3 is a side view of Figure 2, and Figure 4 explains the relationship between the fitting parts of the armature in Figures 1 and 2. FIG.

Identical parts in the figures are indicated using the same reference numerals.

The armature 3 of the switch 2 has a through hole 15 in the plate member 8.
(FIG. 4), and the member 8 is provided approximately perpendicular to the sliding direction of the armature 3.

and a direction parallel to the sliding direction of armature 3 (arrow)
A push button 4 is provided which is operated at a position, and this push button 4 is mechanically connected to a plate member 8 by a connecting member 10.

In this example, as shown in the figure, the push button 4 is attached by a connecting member 10 in a positional relationship such that the center axis of the push button 4 and the center axis of the armature in the sliding direction (the center of the through hole 15) coincide with each other.
The connecting member 10 has a simple structure that is integrally attached to the lower end of the plate member 8 and extends from the member 8 at right angles, that is, parallel to the sliding direction of the armature, and supports the push button 4 at the other end. It has an L-shaped support fitting 9.

The plate member 8 is a rubber bushing 1 as shown in FIG.
1 is pressed against a stopper 16 provided on the armature 3.

In this case, the armature 3 has a ring-shaped groove 12 on its outer peripheral wall near one end thereof, that is, the part where it fits with the plate-like member 8, and the rubber bushing 11 has a ring-shaped protrusion 14 on its inner peripheral wall. ing.

Then, the distance from the contact surface of the rubber bushing 11 with the plate-like member 8 to the center of the ring-shaped protrusion 14 is set at 1°, the thickness of the plate-like member 8 is set at tl, and the distance from the stopper 16 of the armature to the ring-shaped groove 12 is set at 1°. If the distance to the center is 1□, then if the relationship is 1□-t≦1□, when the armature and the plate-like member are locked with the rubber bushing, the rubber protrusion will engage with the groove of the armature. The compressive force of the rubber makes the fit between the two strong.

In addition, the impact force generated when the push button is pressed in the direction of the arrow and then returned by the spring 7 is absorbed by the rubber bushing, resulting in a good operating feeling.

Although it is possible to use an E-ring or the like instead of the rubber bushing, the above-mentioned operation feeling is inferior and the locking force of the E-ring becomes weaker over time.

In addition, when armature 3 is inserted, through hole 1
The through-hole is formed so that the center of the armature 5 can be aligned not only with the central axis of the sliding direction of the armature 3, but also offset in a direction perpendicular to the sliding direction of the armature 3. By making the inner diameter of the armature 15 sufficiently larger than the outer diameter of the armature 3, even if the precision of the push button mounting holes in the operation panel 5 is poor, the plate member 8 can be slid up and down to eliminate positional errors in the mounting holes of the operation panel. can be absorbed.

Therefore, compared to the conventional example, there is an advantage that no excessive force is applied to the armature.

In the above example, a single member parallel to the sliding direction of the armature was used in order to simplify the structure of the connecting member 10, but the present invention is not limited to this. 4 may be mechanically connected to each other.

As detailed above, according to the present invention, the through hole 15 is provided in the plate member 8 substantially perpendicular to the sliding direction of the armature 3, and the inside diameter of the through hole 15 is made sufficiently larger than the outside diameter of the armature 3. Not only can the center of the through hole 15 be made to coincide with the central axis of the armature 3 in the sliding direction, but also it can be made to be offset in a direction substantially perpendicular to the sliding direction of the armature 3. Since the armature 3 and the plate member 8 are configured to be fixed by the fixing member in any state, the relative mounting between the bush switch 2 and the mounting hole of the push button 4 of the panel 5 is possible. Even if an error occurs, the error can be absorbed by deviating the center axis of the armature 3 and the center of the through hole 15, and a component force is applied to the armature 3 in a direction different from its sliding direction. Even if there is an error in the mounting hole of the push button on the operation panel, unreasonable force will not be applied to the switch.
A switch operating mechanism with a good operating feeling, simple structure, and easy assembly can be obtained.

In Fig. 4, grooves and protrusions are provided in the armature and rubber bushing, but even if these grooves and protrusions are not provided, the diameter of the hole in the bushing can be made smaller than that of the armature. It is possible to firmly fit the plate member.

[Brief explanation of the drawing]

Figure 1 is a side view of the operating mechanism of a conventional bushing switch.
Fig. 2 is a perspective view of one embodiment of the present invention, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a sectional view illustrating the relationship between the armature and the plate member in Figs. 2 and 3. . Explanation of symbols of main parts, 2... Bush switch, 3... Armature, 4... Push button, 8... Plate member, 10... ...Connecting member, 11...Rubber bushing, 12...
Ring-shaped groove, 14...Ring-shaped protrusion, 16.
...Stopper.

Claims (4)

[Scope of utility model registration request] (1) A bush switch having an armature 3, a plate member 8 having a plate portion substantially perpendicular to the sliding direction of the armature 3, and a plate member 8 provided to allow the armature 3 to pass through, When the armature 3 is inserted, the center can not only be aligned with the central axis in the sliding direction of the armature 3, but also be deviated in a direction perpendicular to the sliding direction of the armature 3. A through hole 15 has an inner diameter sufficiently larger than the outer diameter of the armature 3, and the plate member 8 is fixed to the armature 3 with the armature 3 inserted through the through hole 15. A fixing member 11.16, a push button 4 that operates in a direction substantially parallel to the sliding direction of the armature 3, one end of which is connected to the push button 4, and the other end of which is connected to the plate member 8.
An operating mechanism for a bushing switch, comprising: a connecting member 10 connected to the push button 4 to transmit the operation of the push button 4 to the plate member 8. (2) The operating mechanism for a bushing switch according to claim 1, wherein the central axis of the push button 4 and the center of the through hole 15 substantially coincide with each other. (3) The fixing member is composed of a rubber bushing 11 that fits into the armature 3 inserted into the through hole 15, and a stopper 16 provided on the armature 3 that presses the plate member 8. 2. An operating mechanism for a bushing switch according to claim 1 or 2, characterized in that: (4) The armature 3 has a ring-shaped groove 12 on its peripheral wall, and the rubber bushing 11 has a ring-shaped protrusion 14 on its inner peripheral wall that fits into the ring-shaped groove 12. Is the distance from the contact surface with the plate-shaped member 8 to the ring-shaped protrusion 14 equal to the distance from the stopper 16 to the ring-shaped groove 12 minus the thickness of the plate-shaped member 8? The operating mechanism for a bushing switch according to claim 3, characterized in that it is configured to