JPS6010516A - Pushbutton switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a push button switch, and particularly to a push button switch in which a push button, an actuator, a movable electrode, and a gold plate are coaxially arranged.

iL+) Technology background A push button switch that manually switches the smear wave circuit that inputs the information of the I-P1 to the device has a switch part in which a fixed electrode and a movable electrode are arranged facing each other, and a switch part that can be moved up and down. It consists of 17 operating sections each equipped with push buttons.

In this type of push-button switch, when the push button is pressed down with an appropriate amount of force and the push-down blade is removed, the fixed electrode and movable electrode close or separate, but the stroke of the push button, the push-down blade, and the contact In order to set the stroke and electrode closing pressure to appropriate values, the switch section and the operating section are generally linked together via an actuator.

tel Prior Art and Problems Fig. 1 is a side cross-sectional view showing an example of the configuration of a conventional push button switch having a +14 configuration.The switch 1 has a plurality of push button switches arranged in a wax-like manner to form a keyboard'k +H. It consists of an operating section 5 inserted into a keyboard panel 2 and a sheet-like switch (commonly known as a membrane switch) section 6 attached to a substrate 3 of the keyboard, and an actuator 4 having spring elasticity is attached to the bottom surface of the operating section 5. ing. The operating section 5 has structural means (not shown) inserted into the panel 2.
- Consists of a housing 7, a push button 8 having a slider that can move up and down along the through hole of the housing 7, and a coil spring 9 that transmits the up and down movement of the push button 8 to the actuator 4, and the slider has a through hole in the housing 7. A latchable protrusion is formed at the end of the hole. The switch section 6 includes a lower seat (10), a spacer (11), and a spacer (11) each made of a plastic film. Upper sheet 12f: laminated, with electrode portions (fixed type +j (j) 13 and flexible 4JL characteristics) of the layer formed in a pattern on the upper surface of the lower sheet 1° within the through holes provided in the spacer 11. A conductor pattern I' is formed on the lower surface of the upper sheet 120.
The electrode portions (movable electrodes) 14 marked with ☆ are vertically opposed to each other.

In the switch 1 configured as described above, when the push button 8 is pressed down with a finger, the actuator 4 supported in a cantilever is pressed down in the vicinity of the free end via the coil spring 9. Therefore, a protrusion 15 protruding downward from the middle part of the actuator 4
presses the upper surface of the upper sheet 12 on which the electrode 14 is formed, and m4@14 comes into contact with the TW 4413 due to this press. Next, when the push-down blade is retracted, the actuator 41 pushes back the coil spring 9 and the push button 8 upwards by the force exerted by the actuator 41 (/c1). The force restores the shape j5, and the electrodes 13 and 14 become separated.

However, conventional pushbutton switches equipped with actuators
The center axis of the push button and the center facing the electrode were smoothed to set the stroke and the push-down blade to appropriate values, respectively. As a result, the space required to mount the push-button switch becomes large, and when the operating section and the switch section are configured to be mounted separately, the positioning of each becomes complicated.

(dl) OBJECT OF THE INVENTION An object of the present invention is to provide a push button switch that eliminates the above-mentioned problems.

+e) Structure of the Invention The above object is to dispose a movable electrode of a switch section below a push button of an operation section, and to integrally form a cylindrical coil spring and a conical coil spring whose winding diameter gradually increases from one side. This is achieved by a push-button switch characterized in that an actuator is disposed substantially coaxially with the push-button.

(f+ Embodiments of the Invention A push button switch according to an embodiment of the invention will be described below with reference to the drawings.

FIG. 2 is a side sectional view of a push button switch according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the push button switch, and FIG. 4 is for explaining elastic deformation of the actuator installed in the push button switch. 2 and 3, in which parts common to the first tooth are denoted by the same reference numerals, the switches 21, which constitute the keyboard by arranging a number of switches in a matrix, are shown on the keyboard panel 2. The actuator 23 is comprised of an operating section 22 inserted into the operating section 22 and a sheet-like switch section 6 attached to the keyboard board 3, and an actuator 23 is installed inside the operating section 22. The operating unit 22 is composed of a housing 24 that is inserted into the panel 2 by the same means as conventional ones, a push button 26 to which a slider 25 that can move up and down is fixed along the central through hole of the housing 24, and an actuator 23. The actuator 23 formed by winding piano wire is a cylindrical coil spring 23a.
A conical coil spring 23 b f, whose winding diameter gradually increases from one end (formed in one piece).

In FIG. 2, a protrusion 24a protruding inward from the lower end of the housing 24 is formed so that the wide end of the actuator 23 is mounted thereon. Further, in FIG. 3, 24b is the central through hole through which the slider 25 moves up and down, 24c is an elastic piece for inserting the housing 24 into the panel 2, and 25a is an elastic piece for inserting the housing 24 into the panel 2, and 25a is the through hole 24bKlii 13 to prevent the slider 25 from sliding upward locking protrusion for, 25
b is a projection that is press-fitted into a groove (not shown) of the LI 26, and 15 is a through hole formed in the spacer 11 to allow the electrodes 13 and 14 to face each other so as to be able to come into contact with and separate from them.

In the switch 21 configured in this way, the center axes of the push button 26, the actuator 23, and the electrodes 13 and 14 are aligned with the push button 26.
It will almost align with the center axis of vertical movement of 6. and push button 2
When 6 is pressed down with a finger, the actuator 23 has a conical coil spring 23b elastically formed into a flat shape as shown in FIG. 4(a), and then a compressed cylindrical coil spring 23a as shown in FIG. 4(b). The upper surface of the upper sheet 12, that is, the movable electrode 1
4 is formed on the upper surface of the sheet 12. As a result, the electrode 14 comes into contact with the electrode 13, and when the pusher blade is removed, the actuator 23 pushes back the push button 26 upward via the slider 25 by its own restoring force, and the upper sheet 12 also has its own restoring force. The restoring force restores the posture, and the electrodes 13 and 14 become separated.

In the above embodiment, the stroke of the push button 26, the pressing blade, and the pressing blade of the upper sheet 12 are controlled by the actuator 23'.
k 47; Each can be set to a desired value depending on the winding diameter and width of the coil springs 23a and 23b and the thickness of the wire used. Furthermore, in the second embodiment, the sheet portion 6 is formed into a sheet shape, but the present invention is not limited to such a sheet shape. For example, as shown in FIG. Four flat portions 32a are provided on the two sides of the reed 32, and are integrally formed with lead bulges 34 and 35 on the bottom surface of the recess 32a on which the dome-shaped dish-shaped spring 33 corresponding to the movable electrode 14 described above is placed. Electrode 34a
, 35a protrudes and when the top of the dish-shaped spring 33 is pressed, the dish-shaped spring 3 is elastically deformed so that the unevenness is almost reversed.
It is possible to use a switch section 31 configured such that the electrodes 3 are in contact with both electrodes 34a and 35a.

(g) As described in detail, according to the present invention, the central axes of the operating section and the switch section can be aligned, so that the push button switch can be made smaller, and when the operating section and the switch section are configured in a functional manner, the central axes of the operating section and the switch section can be The effect of making it easier to install the keyboard is extremely significant, especially for keyboards that have a large number of push buttons and switches.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view showing an example of a conventional push-button switch, FIG. 2 is a side view of a push-button switch according to an embodiment of the present invention, and FIG. 3 is a 214th push-button switch. Figure 4 is a diagram for explaining the elastic deformation of the actuator built into the push button switch of Figure 2.
5 [=! I is a side cross-sectional view showing the formal configuration of the switch portion with a circular dish-shaped spring plate. In the figure, 1.21 is a push button switch, 4.23 is an actuator, 5 and 22 are operation parts, 6 and 31 are switch parts, 8 and 26 are push buttons, 13.34a and 35a are fixed electrodes,
14 is a movable electrode, 23a is a cylindrical coil spring, 23b is a conical coil spring, and 33 is a disc spring corresponding to the movable α pole.

Claims (1)

[Claims] The movable electrode of the switch part is arranged below the push button of the operation part,
A push button switch characterized in that an actuator integrally formed with a cylindrical coil spring and a conical coil spring whose winding diameter gradually increases from one side is housed almost coaxially with the push button.