CN201178054Y - High-travel touch switch - Google Patents

Abstract

The utility model discloses a high stroke touch switch, including button, upper cover and base, its characterized in that sets up a support that has the guide way on the base, and in the guide way of support was inserted to the head of button, the guide way outside of terminal surface and support was equipped with a reset spring under the button, still installed a buffer spring at the head that the button inserted the guide way, installed a butterfly shell fragment on the base bottom plane of buffer spring's below, still fixed setting a pair of wiring stitch in the bottom plane of base. The key adopts a structure of internally installing double springs by pressing up and down, so that the key has a movable stroke of more than 3mm, and a buffering process is provided when the key is pressed down, thereby effectively protecting the butterfly-shaped elastic sheet and prolonging the service life of the switch. Simultaneously the utility model discloses good reliability, manufacturing assembly are easy, simple process, productivity are high, have apparent economic benefits.

Description

High stroke tact switch

technical field

The utility model relates to an electrical switch, in particular to a touch-type key switch, in particular to a high-stroke touch switch.

Background technique

Existing switches similar to computer case boots are divided into two categories: tact switch and key switch. Among them, tact switch is shown in Figure 1, which is characterized by simple process and high production capacity. However, the switch key stroke is short and the total The stroke is less than 0.25mm, and the stroke of the button is zero after it is turned on. Pressing the switch will easily cause damage to the shrapnel of the button, which will affect the life of the switch. Misoperation of the machine will cause the computer (or machine) to start or restart, etc.; the other is the key switch, see Figure 2, which is characterized in that the total stroke of the button is 2.5mm, and after the conduction, the stroke of the button is 1mm , but this kind of button has many parts, complex structure, difficult assembly, low production capacity and high cost.

Contents of the invention

The purpose of this utility model is to provide a high-travel touch switch. The button adopts the structure of pressing up and down and built-in double springs, so that the button has a movable stroke of more than 3mm. At the same time, there is a buffer process when the button is pressed, which can effectively protect Shrapnel, thus prolonging the life of the switch. The utility model has the advantages of simple structure, good manufacturability and easy assembly, and solves the problems existing in the prior art.

The technical scheme adopted by the utility model is a high-stroke touch switch, including a button, an upper cover and a base, and the feature is that a bracket with a guide groove is arranged on the base, and the head of the button is inserted into the guide groove of the bracket. A return spring is installed outside the guide groove of the lower end surface of the button and the support, a butterfly shrapnel is installed on the base plane below the support, and a pair of wiring pins are also fixedly arranged in the bottom plane of the base.

The high stroke touch switch of the utility model is also characterized in that,

The head of the insertion guide groove of the key is also equipped with a buffer spring.

The utility model provides a high-travel touch switch. The button adopts the structure of pressing up and down with built-in double springs, so that the button has a movable stroke of more than 3mm. When the button is pressed, it has a buffering process, which effectively protects the butterfly shrapnel. Thereby prolonging the life of the switch. At the same time, the utility model has good reliability, easy manufacture and assembly, simple process, high production capacity and remarkable economic benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of a light touch switch in the prior art;

Fig. 2 is a structural schematic diagram of a key switch in the prior art;

Fig. 3 is a structural schematic diagram of the high stroke touch switch of the present invention;

Fig. 4 is a structural schematic diagram of another example of the high stroke touch switch of the present invention.

In the figure, 1. Button, 2. Upper cover, 3. Return spring, 4. Bracket, 5. Buffer spring, 6. Disc shrapnel, 7. Base, 8. Pin.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A high stroke touch switch, as shown in Figure 3, includes a key 1, an upper cover 2 and a base 7, a support 4 with a guide groove is arranged on the base 7, the head of the key 1 is inserted into the guide groove of the support 4, and the A return spring 3 is installed on the lower end surface of the button 1 and the guide groove of the bracket 4, a butterfly shrapnel 6 is installed on the plane of the base 7 below the bracket 4, and a pair of wiring pins 8 are fixedly arranged in the bottom plane of the base 7. The head of the insertion guide groove of the button 1 is also equipped with a buffer spring 5,

When the switch key 1 is pressed, the utility high-travel touch switch of the present invention moves toward the bottom under the guidance of the bracket 4. When the key 1 moves downward, the moving head buffer spring 5 touches the butterfly shrapnel 6. The two squeeze each other to produce deformation, the butterfly shrapnel 6 is pressed, and the two wiring pins 8 conduct to open the device through the butterfly shrapnel 6. After the button 1 is released, the button 1 resets under the action of the return spring 3 . In this process, regardless of whether the user presses it vigorously or quickly, because the buffer spring 5 first contacts the butterfly shrapnel 6 and presses until the buffer spring 5 is completely compressed into the bottom, the plastic bottom surface of the button 1 is directly pressed against the shrapnel. At this time, the button 1 of the switch has moved to the extreme, which will not cause damage to the butterfly shrapnel 6, effectively protect the butterfly shrapnel 6, and prolong the service life of the switch.

Fig. 4 is another example structure of the high-travel touch switch of the present invention. The bracket 4 arranged in the base 7 is in light contact with the butterfly shrapnel 6 under the elastic force of the return spring 3. When the switch button 1 is pressed, the bracket 4 Under the guidance of the button, it moves to the bottom. When the button 1 moves downward, when the moving head buffer spring 5 touches the butterfly shrapnel 6, the two are squeezed and deformed. The butterfly shrapnel 6 is pressed, and the two wiring The pin 8 conducts and turns on the device through the butterfly shrapnel 6. After the button 1 is released, the button 1 resets under the action of the return spring 3 . In this process, regardless of whether the user presses it vigorously or quickly, because the buffer spring 5 first contacts the butterfly shrapnel 6, and presses until the buffer spring 5 is completely compressed into the bottom, the plastic bottom surface of the button 1 is directly pressed against the shrapnel. At this time, the button 1 of the switch has moved to the extreme, which will not cause damage to the butterfly shrapnel 6, effectively protects the butterfly shrapnel 6, and prolongs the service life of the switch.

Claims (2)

1. A high stroke tact switch, comprising a button (1), an upper cover (2) and a base (7), characterized in that a bracket (4) with a guide groove is arranged on the base (7), and the button (1) Insert the head of the bracket (4) into the guide groove of the bracket (4), and a return spring (3) is installed on the lower end surface of the button (1) and the outside of the guide groove of the bracket (4), and the base (7) plane below the bracket (4) A butterfly shrapnel (6) is installed on the top, and a pair of wiring pins (8) are also fixedly arranged in the bottom plane of the base (7). 2. The high stroke tact switch according to claim 1, characterized in that a buffer spring (5) is installed at the head of the key (1) inserted into the guide groove.

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