JPS6343773Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button structure that can display the operating status of a push button switch, and is particularly intended to provide a push button with a display that is suitable for short stroke push button switches. .

A conventional push button switch operation display structure is shown in FIG. In this system, one end of the display plate 2 is fixed to the switch case 1, and the display plate 2 moves in accordance with the operation of the switch within the through hole 4a of the push button 4 attached to the plunger 3 of the switch. Display board 2 when turned on
The operation is displayed by appearing in the window 4b on the front side of the push button 4. However, in such a structure, the moving distance of the display board 2 is equal to the stroke of the plunger 3, so the stroke is 1 to 1.
When the switch is as small as about 2 mm, the area of the display board 2 that appears within the window 4b becomes small, which has the disadvantage that it becomes difficult to identify the operating state.

The present invention was developed in view of these conventional drawbacks, and by adding a mechanism in which the moving distance of the display board is larger than the stroke of the plunger, the area of the display board that appears inside the window is enlarged and it is easy to see. This allows the operating status of the switch to be clearly displayed. An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an exploded perspective view of a push button with a display mechanism according to the present invention, and FIG. 3 is a side sectional view. In these figures, reference numeral 10 denotes a front plate with a window hole 12 formed on the front surface and a protruding piece 14 extending rearward provided on the upper part, and a downward protrusion 16 is provided at the tip of the protruding piece 14. . Reference numeral 20 denotes a base body with an open front side, and a mounting hole 22 for fitting a plunger of a switch and a hole 24 for inserting a display plate, which will be described later, are formed in the rear part of the base body 20. The front plate 10 is fixed to the front surface of the base body 20 by means of adhesion or engagement with each other, and the front plate 10 and the base body 20 constitute a push button. The push button has a passage 30 extending from the hole 24 to the window hole 12.
is formed, and the protrusion 16 is shaped to protrude into the passage 30 from inside the push button. 4
0 is a display plate made of an elastic material such as polyester, whose front portion is passed through the hole 24 and then curved and installed in the passage 30 so as to be able to reciprocate. The display plate 40 is provided with a notch 42 at the rear end for locking onto the switch body side, and the protrusion 16 can be inserted into the position corresponding to the protrusion 16 when the push button display mechanism is not activated. Through hole 44 of size
is formed. The protrusion 16 is provided with a sloped surface 16a that is inclined with respect to the moving direction of the push button, and the display plate 4
0 moves through the passage 30, it is made easy to escape from the through hole 44. When not in operation, the protrusion 16 protrudes into the through hole 44 as shown in FIG.
It is located nearby.

This push button with display mechanism can be assembled very easily as follows. That is, after fitting and fixing the front plate 10 to the base body 20, it is only necessary to insert the display plate 40 into the passage 30 through the hole 24 and cause the protrusion 16 to protrude into the through hole 44. The thus assembled push button with display mechanism is used by fitting the mounting hole 22 into the plunger of the switch and holding the rear end of the display plate 40 on the switch body side.

Next, the operation of this push button with display mechanism will be explained. FIG. 4 shows the push button attached to the plunger 52 of the switch 50. Although not shown, the switch 50 is provided with a spring for returning the plunger and a cam mechanism for locking the plunger 52 at two points: switch-on and switch-off. Reference numeral 60 denotes a frame for fixing the switch 50 to a chassis of an electrical device, etc., and has horizontally elongated holes 62 and 63 formed in its upper part. After the rear part of the display board 40 is inserted into the hole 62,
It is held in the frame 60 by engaging the notch 42 with the hole 63. The rear part of the display board 40 is not limited to the frame 60, but may be any other side fixed to the switch body, such as the switch case or chassis.

Now, the switch 50 is in an inoperable state, that is, an off state, and the protrusion 16 is inserted into the through hole 44.
The front end 46 of the display board 40 is the upper edge 12a of the window hole 12.
Located nearby. Therefore, at this time, the display board 40 cannot be seen from in front of the push button.
From this state, when the push button is pressed to turn on the switch 50, the state will be as shown in FIG. That is, as the push button moves to the left in the figure, the protrusion 14 that had protruded into the through hole 44 moves the slope portion 16a into the through hole 4.
4 and comes out of the through hole 44, so the display board 40 is pressed downward by the projections 16. As a result, the front end 46 of the display board 40 moves a distance equal to the stroke of the plunger 52 plus a distance pushed down by the protrusion 16 and appears in the window hole 12. After that, if this push button is pressed again, or if the push button of another switch connected by the frame 60 is pressed in conjunction with the switch 50, the plunger 52 will be activated because the display board 40 is elastic. At the same time as returning to the original position, the protrusion 16 enters the through hole 44,
The state returns to the state shown in FIG. Therefore, the display board 4
By coloring 0 in bright red or yellow,
The operating status of the switch can be clearly displayed.

In the embodiments described above, the front plate and the base body constitute the push button, but the configuration of the push button is not limited to this, and it goes without saying that it can be modified in various ways. Alternatively, a plate may be fixed inside the push button so as to face the window hole, and this plate may be used to indicate when the switch is off. Further, the display board may have a composite structure in which a flexible thin film is used for the front part and a slightly thick synthetic resin board with high elasticity is used for the rear part.

As mentioned above, in the push button with a display mechanism according to the present invention, the display plate is swung by the protrusion in response to the operation of the switch, so the movement width of the front end is larger than the stroke of the switch. be. Therefore, even a switch with a small stroke can be provided with a large display window, and since the display board appears close to the back of the window, the operating status of the switch can be clearly displayed. Furthermore, it has the advantage of not only having a small number of parts and being easy to assemble, but also being extremely easy to attach to a switch.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional switch with an operation display mechanism, Fig. 2 is an exploded perspective view of a push button with a display mechanism according to the present invention, Fig. 3 is a side sectional view of the same, and Figs. 4 and 5 are the same push button. FIG. 12...Window hole, 16...Protrusion, 16a...Slope portion, 30...Passage, 40...Display board, 44...Through hole, 46...Front end, 50...Switch.

Claims (1)

[Scope of utility model registration request] A push button having a window hole on the front surface and a passageway extending from the rear surface to the window hole; and a display plate made of an elastic material and mounted in the passageway so as to be movable back and forth, the rear end of which is held on the switch body side. In a push button with a display mechanism that displays the operating status of the switch by the front end of the display board appearing in the window hole when the switch is attached to the switch and operated, the slope is inclined with respect to the direction of movement of the push button. A projection is provided on the inside of the push button and projects into the passageway, and a through hole is formed in the display board corresponding to the projection, so that when the display board moves back into the passageway, the display board is placed in the first position. In this embodiment, the projection enters the through hole, and in the second position, the projection comes out of the through hole and presses the display board, thereby expanding the amount of movement of the front end of the display board. Push button with display mechanism.