TWM588872U - Key switch to change the response speed of pressing - Google Patents

Abstract

The invention discloses a key switch capable of changing the pressing reaction speed, which comprises a base, a cover arranged above the base, a guide core arranged between the base and the cover, and an elastic member arranged under the guide core And a conducting component, an upper opening is provided on the cover for the upper end of the conducting core to pass through, the conducting component includes a carbon film substrate and a carbon film substrate disposed on one side of the conducting core and located inside the carbon film substrate A conduction trigger, wherein a carbon membrane is provided on the inner surface of the carbon film substrate, and at least two conduction contact pins for contacting the carbon membrane are provided on the conduction trigger. The key switch provided by the present invention can change the speed of pressing the guide core to realize the generation of a signal that changes the electrical performance (resistance value) at the time of conduction, and finally realizes the change of the pressing reaction speed.

Description

Key switch capable of changing pressing reaction speed

The invention relates to a key switch, in particular to a key switch which can change the reaction speed of pressing.

Many operations of existing equipment require the use of a key switch as an input means. The quality of the key switch determines the experience of the input device. While ensuring stable performance, the requirements for sensitivity are also increasing. Especially for different applications, or different users, the response speed of the switch pressing requirements are different.

Especially for game players, the key switch needs to have a faster and more sensitive reaction speed in order to improve the pleasure of playing games. However, in the existing key switches, due to structural limitations, the pressing response speed has not been improved, and the response speed and sensitivity of each key switch are fixed and cannot be changed, which is not convenient for users. The experience cannot be improved.

In view of the above shortcomings, the purpose of the present invention is to provide a key switch that can change the response speed of pressing. By changing the speed of pressing the guide core, the signal of the change of the electrical performance (resistance value) during conduction can be realized, and finally the response speed of the pressing can be realized. change.

The technical solution adopted by the present invention to achieve the above purpose is: a key switch capable of changing the pressing reaction speed, including a base, a cover disposed above the base, and a cover disposed between the base and the cover A guide core, an elastic member and a conduction component disposed under the guide core, and an upper opening for the upper end of the guide core to be opened on the cover, characterized in that the conduction component includes a carbon film substrate and A conduction trigger disposed on one side of the guide core and located inside the carbon film substrate, wherein a carbon membrane is provided on the inner surface of the carbon film substrate, and a contact with the carbon is provided on the conduction trigger At least two conductive contact pins contacted by the diaphragm.

As a further improvement of the present invention, the carbon membrane is generally U-shaped or inverted U-shaped, and has two connecting ends.

As a further improvement of the present invention, the carbon film substrate is electrically connected to an upper PCB board, and three conductive terminals penetrating the base and inserted on the upper PCB board are provided at the lower end of the carbon film substrate, the carbon One of the two connecting ends of the diaphragm is connected to one of the three conductive terminals, and the other of the two connecting ends of the carbon membrane is connected to the three conductive terminals Another conductive terminal.

As a further improvement of the present invention, the three conductive terminals are riveted together with the carbon film substrate.

As a further improvement of the present invention, the conduction trigger is mainly composed of a connection piece connected to one side surface of the guide core and at least two of the conduction contact pins provided on the connection piece, wherein the conduction contact pin is composed of The lower end of the connecting piece is bent toward the carbon film substrate and extends upward.

As a further improvement of the present invention, the conductive contact foot includes A bent portion connected to the lower end of the connecting piece and bent toward the carbon film substrate, an inclined portion integrally formed at the upper end of the bent portion and inclined toward the carbon film substrate, and integrally formed at the A bent portion bent at the upper end of the inclined portion and approaching the connecting piece.

As a further improvement of the present invention, the conduction trigger is a brush.

As a further improvement of the present invention, the guide core and the conduction trigger are welded together.

As a further improvement of the present invention, a lower PCB board electrically connected to the upper PCB board is provided at the lower end of the base; a guide post is protruded upward at the center position of the upper end of the base, and a central axis of the guide post A perforation penetrating to the lower end surface of the base is opened downward in the direction; a guide groove for the guide post to be embedded is opened upward at the lower end surface of the guide core; a light-emitting part is provided on the lower PCB board The upper end of the light-emitting member penetrates through the perforation and is embedded in the guide slot; the elastic member is a spring, the upper end of the spring is embedded in the guide slot, and the lower end is sleeved around the periphery of the guide post.

As a further improvement of the present invention, a torsion spring is provided on the base, and a springing protrusion for springing the torsion spring is protruded outward on one side of the guide core.

The beneficial effects of the present invention are: through a conduction element composed of an upper PCB board with a special structural design, a carbon film substrate and a conduction trigger, the conduction contact foot on the conduction trigger slides up and down on the carbon membrane , To change the electrical properties in the carbon film substrate, specifically the change in resistance value, thereby generating a signal that the electrical properties (resistance value) change in a linear proportion when turned on. Simultaneously with the function of turning on and off, by changing the speed of pressing the guide core, the signal of the change of the electrical performance (resistance value) when turning on can be realized, and finally the speed of pressing reaction can be changed. Specifically, when the guide core is pressed quickly, the resistance value changes quickly when it is turned on, and the pressure response speed is fast and the response is sensitive; when the guide core is pressed slowly, and the resistance value changes slowly when it is turned on, the pressure response speed is relatively slow.

The above is an overview of the new technical solution, and the present invention will be further described below with reference to the drawings and specific implementations.

1‧‧‧Dock

11‧‧‧Guide column

111‧‧‧Perforation

2‧‧‧ lid

21‧‧‧ Upper opening

3‧‧‧Guide core

31‧‧‧Guide groove

32‧‧‧Bouncing bump

4‧‧‧Elastic parts

5‧‧‧Conducting components

51‧‧‧upper PCB

52‧‧‧Carbon film substrate

521‧‧‧Carbon diaphragm

5211‧‧‧Connector

522‧‧‧Conductive terminal

53‧‧‧Enable trigger

531‧‧‧conducting contact pin

5311‧‧‧Bending Department

5312‧‧‧ Inclined part

5313‧‧‧back bend

532‧‧‧Connector

6‧‧‧ Lower PCB

7‧‧‧Lighting

8‧‧‧torsion spring

Figure 1 is an explosion diagram of the new model.

Figure 2 is a schematic diagram of the external structure of the new model.

Figure 3 is a schematic diagram of a part of the structure of the new model.

Figure 4 is a schematic diagram of the structure of the new type carbon film substrate.

FIG. 5 is a schematic diagram of the structure of the new type of conduction trigger.

Fig. 6 is a schematic diagram of the structure of the novel conduction element.

Figure 7 is a schematic diagram of another part of the structure of the new model.

Figure 8 is a cross-sectional view of the new model.

Figure 9 is another cross-sectional view of the new model.

In order to further illustrate the technical means and effects adopted by the new model to achieve the intended purpose, the following describes the specific implementation of the new model in detail with reference to the drawings and preferred embodiments.

Please refer to FIGS. 1 to 6, an embodiment of the present invention provides a key switch capable of changing the pressing reaction speed, which includes a base 1 and is disposed on the base 1 A cover 2 on the side, a guide core 3 provided between the base 1 and the cover 2, an elastic member 4 and a conducting component 5 provided under the guide core 3, the cover 2 is provided with An upper opening 21 passing through the upper end of the guide core 3, and at the same time, the guide core 3 adopts a dustproof design.

As shown in FIG. 6, the conduction component 5 of this embodiment includes a carbon film substrate 52 and a conduction trigger 53 disposed on one side of the guide core 3 and located inside the carbon film substrate 52, wherein, in the carbon film A carbon film 521 is provided on the inner surface of the substrate 52, and at least two conductive contact pins 531 for contacting the carbon film 521 are provided on the conduction trigger 53. In this embodiment, the carbon film substrate is electrically connected to an upper PCB board 51. The upper PCB board 51 is an in-axis PCB board provided with corresponding electronic components. It is used in conjunction with the carbon film substrate 52 and the conduction trigger 53. The conductive contact pin 531 on the trigger 53 slides on the carbon film 521 to change the electrical properties of the carbon film substrate 52, specifically the change in resistance value, so that the electrical properties (resistance value) when turned on The signal of linear proportional change can realize the function of turning on and off the key switch, at the same time, by changing the speed of pressing the guide core, the electrical property (resistance value) changing speed signal can be generated, and finally the pressure response speed can be changed.

In this embodiment, the overall shape of the carbon membrane 521 may be various. When at least two conduction contact feet 531 of the conduction trigger 53 slide on the carbon membrane 521, two or more The distance formed by the conductive contact pins 531 on the carbon membrane 521 can be changed continuously. Preferably, as shown in FIG. 4 and FIG. 6, the carbon membrane 521 is generally U-shaped or inverted U-shaped, and has two connecting ends 5211. At the same time, three guides penetrating the base 1 and inserted on the upper PCB board 51 are provided on the lower end of the carbon film substrate 52 The electrical terminal 522, one of the two connection ends 5211 of the carbon membrane 521 is connected to one of the three conductive terminals 522, and the two connection ends 5211 of the carbon membrane 521 The other connection end of is connected to the other one of the three conductive terminals 522. The two connection ends 5211 of the carbon film 521 are connected to the conductive terminal 522, and the resistance value signal changed on the carbon film substrate 52 can be transmitted to the upper PCB board 51 to generate electrical performance in the key switch ( Resistance value) A signal that changes linearly.

Taking the two conductive contact pins 531 as an example, when the carbon membrane 521 has an inverted U shape as a whole, as shown in FIGS. 4 and 6, press the guide core 3 downward, and the two conductive contact pins 531 just come into contact When the carbon film 521 is formed, the distance formed by the two conductive contact pins 531 on the carbon film 521 is the shortest, that is, the connection line formed by connecting the two conductive contact pins 531 along the carbon film 521 is the shortest. The resistance value in the carbon film substrate 52 is the smallest; when the guide core 3 is pressed to the bottom, the two conductive contact pins 531 slide to the bottom of the carbon film 521, and the two conductive contact pins 531 are formed on the carbon film 521 The distance becomes the longest, that is, the connection line formed by connecting the two conductive contact pins 531 along the carbon film 521 is the longest. At this time, the resistance value in the carbon film substrate 52 is the largest.

When the carbon diaphragm 521 is U-shaped as a whole, when the two conductive contact pins 531 just contact the carbon diaphragm 521, and when the guide core 3 is pressed to the bottom, the two conductive contact legs 531 are in the carbon diaphragm The distance formed on 521 changes from the longest to the shortest, that is, the resistance value in the carbon film substrate 52 changes from the largest to the smallest.

In this embodiment, as shown in FIG. 5, the conduction trigger 5 3 is a brush. The conduction trigger 53 is mainly composed of a connection piece 532 connected to one side of the guide core and at least two of the conduction contact pins 531 provided on the connection piece 532, wherein the conduction contact The leg 531 is bent from the lower end of the connecting piece 532 toward the carbon film substrate 52 and extends upward. Specifically, the conductive contact pin 531 includes a bending portion 5311 connected to the lower end of the connecting piece 532 and bending toward the carbon film substrate 52, and is integrally formed on the upper end of the bending portion 5311 and close to the carbon film An inclined portion 5312 inclined in the direction of the substrate 52 and a bent portion 5313 integrally formed on the upper end of the inclined portion 5312 and bent toward the connecting piece 532.

During the movement of the guide core 3 up and down, the conduction trigger 53 is driven to move up and down, so that at least two conduction contact pins 531 on the conduction trigger 53 are on the carbon membrane 521 on the inner surface of the carbon film substrate 52 Slide up and down to change the resistance value when turning on, and by changing the speed of pressing the guide core 3, you can change the speed of the resistance value change when turning on, thereby changing the speed of the key switch pressing response to adapt to different users. demand.

Specifically, taking the two conductive contact pins 531 as an example, when the carbon membrane 521 has an inverted U shape as a whole, as shown in FIG. 4 and FIG. 6, press the guide core 3 down a short distance When the conductive contact pin 531 is just connected to the carbon film 521, the resistance value in the carbon film substrate 52 is the smallest, that is, the conduction resistance value is the smallest. At this time, the key switch is in the conduction starting state; then, if the guide core is pressed down quickly 3 to the lowermost end, the resistance value in the carbon film substrate 52 quickly becomes the maximum value, which takes a short time, and the on-resistance value changes rapidly from the minimum value to the maximum value. At this time, the key switch is in the conduction end state. In the above process, due to the rapid Pressing down the guide core 3 rapidly changes the key switch from the conduction start state to the conduction end state, and the conduction resistance value changes rapidly, thereby directly accelerating the speed of the key switch pressing reaction. Conversely, if the guide core 3 is pressed to the lowermost end at a relatively slow speed, the resistance value in the carbon film substrate 52 becomes the maximum value for a long time, and if the speed is slow, the on-resistance value changes slowly, thereby Directly slow down the speed of the key switch press response.

Correspondingly, when the carbon membrane 521 is U-shaped as a whole, the guide core 3 is pressed down a short distance, and the resistance value in the carbon membrane substrate 52 when the two conductive contact pins 531 just contact the carbon membrane 521 Maximum, that is, the maximum on-resistance value, at this time, the key switch is in the on-state of the starting point; then, if the guide core 3 is quickly lowered to the lowest end, the resistance value in the carbon film substrate 52 quickly decreases to the minimum value, which takes a short time , The on-resistance changes rapidly from the maximum value to the minimum value, at this time, the key switch is in the end-state of conduction. In the above process, due to the rapid depression of the guide core 3 during operation, the key switch is quickly changed from the conduction start state to the conduction end state, and the conduction resistance value changes rapidly, thereby directly accelerating the speed of the key switch pressing the conduction reaction . Conversely, if the guide core 3 is pressed to the lowermost end at a relatively slow speed, the resistance value in the carbon film substrate 52 decreases to the minimum value for a long time, and the speed is slow, the change rate of the on-resistance value is slow, This directly slows down the speed of the push-on response of the key switch.

In this embodiment, the connection between the three conductive terminals 522 and the carbon film substrate 52 and between the guide core 3 and the conduction trigger 53 can be adjusted according to specific conditions and needs. Preferably, in this embodiment, the three conductive terminals 522 are riveted to the carbon film substrate 52; meanwhile, the guide core 3 and the conduction trigger 53 are welded together.

As a further improvement of the embodiment of the present invention, in order to improve the luminous effect of the key switch, this embodiment adopts the structural design of intermediate lighting. Specifically, as shown in FIGS. 1, 7 to 9, a lower PCB board 6 electrically connected to the upper PCB board 51 is provided at the lower end of the base 1; There is a guide post 11, and a perforation 111 penetrating to the lower end surface of the base 1 is opened downwards in the direction of the central axis of the guide post 11; a guide hole 11 is inserted upward at the lower end surface of the guide core 3 A guide slot 31; a light emitting element 7 is provided on the lower PCB board 6, specifically an LED lamp, the upper end of the light emitting element 7 penetrates the through hole 111 and is embedded in the guide slot 31; the elastic element 4 is a spring, the The upper end of the spring is embedded in the guide slot 31, and the lower end is sleeved around the periphery of the guide post 11. The light-emitting member 7 is disposed at the center of the base 1 and is conducted out through the center of the guide core 3 to achieve the effect of intermediate light emission, greatly improving the light emission effect of the key switch to improve the user experience.

As a further improvement of the embodiment of the present invention, in order to improve the feeling of pressing and generate a pressing sound, this embodiment adds a sound-emitting structure. Specifically, as shown in FIGS. 1 and 3, a torsion spring 8 is provided on the base 1, and a side for urging the torsion spring 8 is protruded outward on one side of the guide core 3 Bounce the protrusion 32. In the process of pressing the guide core 3 up and down, the torsion spring 8 is springed by the spring protrusion 32 of the guide core 3 so that the torsion spring 8 strikes the base 1 or the cover 2 due to the spring The sound not only realizes the sound effect of pressing, but also improves the feeling of pressing.

The above is only the preferred embodiment of the present invention, and does not limit the technical scope of the present invention. Therefore, the same or similar technical features as the above-mentioned embodiments of the present invention are adopted, and other structures obtained are in the present invention. Within the scope of protection.

1‧‧‧Dock

2‧‧‧ lid

21‧‧‧ Upper opening

3‧‧‧Guide core

32‧‧‧Bouncing bump

4‧‧‧Elastic parts

5‧‧‧Conducting components

51‧‧‧upper PCB

52‧‧‧Carbon film substrate

53‧‧‧Enable trigger

7‧‧‧Lighting

8‧‧‧torsion spring

Claims (10)

A key switch capable of changing the pressing reaction speed includes a base, a cover provided above the base, a guide core provided between the base and the cover, and an elastic member provided under the guide core And a conducting component, the lid is provided with an upper opening for the upper end of the guiding core to pass through, characterized in that the conducting component includes a carbon film substrate and is disposed on one side of the guiding core and is located on the carbon A conduction trigger on the inner side of the film substrate, wherein a carbon membrane is provided on the inner surface of the carbon film substrate, and at least two conduction contact pins for contacting the carbon membrane are provided on the conduction trigger. As described in claim 1, the key switch which can change the pressing reaction speed, the carbon membrane is U-shaped or inverted U-shaped as a whole, and has two connecting ends. As described in claim 2, the key switch capable of changing the pressing reaction speed, the carbon film substrate is electrically connected to an upper PCB board, and a lower end of the carbon film substrate is provided with a penetration through the base and inserted on the upper PCB board On the three conductive terminals, one of the two connecting ends of the carbon membrane is connected to one of the three conductive terminals, and the other of the two connecting ends of the carbon membrane The connection end is connected to the other one of the three conductive terminals. As described in claim 3, the key switch which can change the pressing reaction speed, the three conductive terminals are riveted together with the carbon film substrate. As described in claim 1, the key switch capable of changing the pressing reaction speed, the conduction trigger is mainly composed of a connection piece connected to one side of the guide core and at least two of the conduction contact pins provided on the connection piece Composition, wherein the conductive contact pin is bent from the lower end of the connecting piece toward the carbon film substrate and extends upward. As described in claim 5, the key switch capable of changing the pressing reaction speed, the conducting contact pin includes a bent portion connected to the lower end of the connecting piece and bent toward the carbon film substrate, which is integrally formed in the bend An inclined portion inclined at the upper end of the folded portion and approaching the carbon film substrate and a bent portion integrally formed at the upper end of the inclined portion and bent toward the connecting piece. As described in claim 1, the key switch capable of changing the pressing reaction speed, the conduction trigger is a brush. According to the key switch which can change the pressing reaction speed as described in claim 1, the guide core and the conduction trigger are welded together. As described in any one of claims 3 to 8, the key switch capable of changing the pressing reaction speed is provided with a lower PCB board electrically connected to the upper PCB board at the lower end of the base; at the center position of the upper end of the base A guide post is protruded upwards, and a perforation penetrating to the lower end surface of the base is opened downward in the direction of the central axis of the guide post; a guide for the insertion of the guide post is opened upward at the lower end surface of the guide core A groove; a light-emitting element is provided on the lower PCB board, the upper end of the light-emitting element penetrates the perforation and is embedded in the guide groove; the elastic element is a spring, the upper end of the spring is embedded in the guide groove, and the lower end is sleeved on the guide post Peripheral. As described in any one of claims 1 to 8, the key switch capable of changing the pressing reaction speed is provided with a torsion spring on the base and protruding outward on one side of the guide core for springing A springing protrusion of the torsion spring.

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