JPS6015A - Operation 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] Industrial applications The present invention relates to improvements in operating switches.

Conventional configurations and their problems In recent years, control devices have become more complex due to the adoption of microcomputers and sensors, and in many cases, control switches for operating these complex control devices are provided on printed circuit boards.

Hereinafter, a conventional operation switch will be explained with reference to FIG.

In FIG. 4, reference numeral 2 denotes an operation panel frame provided on the front surface of the operation unit, and an operation switch and button 4 having a hook portion 8 are provided on the panel frame 2 so as to be freely retractable. A spring 11 for an operation switch button is inserted into the protruding portion 9 that protrudes freely. 1lJj A printed circuit board provided at the rear of the operation panel frame 2, on which a button switch 6 is provided at a position facing the operation switch button 4. 10 is provided in the operation panel frame 2.
A protruding portion 9 of the operating switch button 4 and a spring 11 for the operating switch button inserted into the protruding portion 9 are locked at the supporting portion of the operating switch button 4.

In the operation switch section formed in this way, if the operation switch button 4 is pushed too hard in the direction of the arrow, the force will be applied directly to the push-pull switch 6, and the print will be further removed. There have been problems in that pressing the board 6 too strongly may break the printed board 5 or cause the copper foil disposed on the printed board 5 to peel off, causing a failure of the control device.

Purpose of the Invention The present invention solves the above-mentioned problems, and provides a highly reliable operation switch that does not cause any trouble to the board such as a printed circuit board even if the operation switch is provided on a board such as a cylinder board. .

Structure of the Invention In order to achieve this object, the operation switch of the present invention includes an operation switch button having a protrusion, a switch actuating spring provided at the tip of the protrusion, and a switch actuation spring provided opposite to the protrusion. and a substrate having the bushing switch; the protruding portion is provided in a direction in which the operating switch is pressed; and the bushing switch is actuated via the spring. be.

According to the above configuration, when the push-in switch provided on the board is pressed, the protrusion provided on the operation switch approaches the button switch, and the spring provided at the tip of the protrusion causes the Push, the switch is pressed.

DESCRIPTION OF THE EMBODIMENTS An embodiment in which the operation switch of the present invention is utilized in a cooking device as shown in FIG. 1 will be described with reference to FIGS. 1, 2, and 3.

In Figures 1 and 2, 1 is the main body of the heating cooker;
An operation panel frame 2 provided on the front surface of the main body is provided with a timer knob 3, an operation switch button 4, and an operation switch button 7 that engages with a button switch 6 provided on a board 5.

As shown in FIG. 2, this operation switch button 7 has a hook portion 8, and a protruding portion 9 that protrudes from the center of the recess passes through a support portion 10 of the panel frame 2 and is provided so as to be freely retractable into the panel frame 2. ing. Reference numeral 11 denotes a spring for the operation switch pushed into the protruding portion 9 of the operation switch button 7, and is installed inside a recessed portion of the operation switch button. Reference numeral 12 denotes a switch actuating spring inserted into the recess of the protrusion 9 of the operation switch button 7, which engages with the pull switch 6 and prevents the push switch 6 and the operation switch button from protruding even if the operation switch button 7- is pressed strongly. Since the width of the portion 9 is slightly wider than the contact width of the switch actuation spring 12, it is only necessary to select a value that will not adversely affect the printed circuit board 5 if a force greater than the repulsion force of the switch actuation spring 12 is applied to the spring tip 6. .

(G: Modulus of transverse elasticity, d: Diameter of material, δ: Deflection% of spring, n: Effective number of turns, D: Average diameter of coil) Figure 3 shows the state when the operation switch button is pressed in the direction of the arrow. It shows. Reference numeral 13 shown in FIG. 1 is an operation confirmation lamp for the bush switch 6 provided on the printed circuit board 5.

The operation switch section of the heating cooker of this embodiment configured as described above has a switch actuation spring 12 attached to the operation switch button 7.
By providing this, even if the operating switch button 7 is pressed forcefully, the force applied to the printed circuit board is absorbed by the repulsive force of the switch operating spring 12.

It is possible to prevent the printed circuit board 5 from cracking and to prevent the copper foil disposed on the printed circuit board 5 from peeling off. Therefore, there is no need to worry about malfunction of the cooking device by operating the operation switch button 7.

Also, by providing the switch actuating spring 12 on the operation switch button 7, the feeling when pressing the operation switch button 7 is very improved (the Pnonyu switch 6 is operated reliably).

Effects of the Invention As described above, the present invention uses a switch actuation spring provided at the tip of the protrusion of the operation switch button.

It completely prevents the cracking of the board and the peeling of the copper foil on the board that would be caused by pressing the bushing switch provided on the board with too much force.It also provides an excellent feel when pressing the operation switch button, and prevents the bushing switch from wearing out. It requires less and is more reliable.
The effect is like a dog.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main body of a heating cooker showing an embodiment of the present invention, Fig. 2 is a sectional view showing the operation switch section of Fig. 1, and Fig. 3 is an operation switch button of Fig. 2. FIG. 4 is a cross-sectional view of a conventional operation switch section. 5...Printed circuit board, 6...Punongyu switch. 7...Operation switch button %9...Protrusion, 12...Switch operation pie. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] An operation switch button having a protrusion, a switch actuating spring provided at the tip of the protrusion, a bushing switch provided to face the protrusion, and a substrate having the bushing switch. The operation switch is configured such that the protruding portion is provided in a direction in which the operation switch is pushed in, and the button switch is actuated via the spring.