CN211376478U - An ultra-thin key switch - Google Patents

Abstract

The utility model discloses an ultra-thin key switch, including a base, set up in an upper cover of base top, a static contact and with the corresponding movable contact elastic component that sets up of static contact, this movable contact elastic component one end extends to the upper cover, triggers movable contact elastic component one end and static contact or separation by this upper cover. The utility model provides an ultra-thin key switch, thickness is thin, has and presses down sound producing effect, promotes the user impression.

Description

An ultra-thin key switch

technical field

The utility model relates to the field of key switches, in particular to an ultra-thin key switch.

Background technique

In the existing key switch, a guide core is usually arranged inside to trigger the contact and separation of the moving contact piece and the static contact piece, so as to realize the on and off functions of the key switch. The height of the guide core structure is high, which takes up a lot of internal space, making the thickness of the key switch thicker, and it is difficult to make it very thin.

At the same time, due to the limitation of the internal space of the thin key switch, it is always impossible to have the same pressing sound as the large key switch.

Utility model content

In view of the above deficiencies, the purpose of the present invention is to provide an ultra-thin key switch, which has a thin thickness, has the effect of pressing sound, and improves the user's experience.

The technical scheme that the utility model adopts to achieve the above-mentioned purpose is:

An ultra-thin key switch, comprising a base, an upper cover arranged above the base, a static contact piece, and a movable contact elastic piece corresponding to the static contact piece, characterized in that the moving contact elastic piece One end extends to the upper cover, and one end of the movable contact elastic member is triggered by the upper cover to contact or separate from the static contact piece.

As a further improvement of the present invention, a locking position is formed on the lower end surface of the upper cover, and one end of the movable contact elastic member is locked into the locking position.

As a further improvement of the present invention, a hook is extended downward on the lower end face of the upper cover, and the hook is formed on the hook.

As a further improvement of the present invention, the movable contact elastic member is a first torsion spring, and the first torsion spring is mainly composed of a first spring body, a connecting terminal connected to one end of the first spring body, and a first torsion spring connected to the first spring body. The other end of the spring body is composed of a conducting contact portion, the conducting contact portion extends to the upper cover, and the static contact piece is located below the conducting contact portion.

As a further improvement of the present invention, an extension portion bent upward and extending to the upper cover is provided at the end of the conducting contact portion.

As a further improvement of the present invention, a first groove for the first spring body to be embedded in and a first movable groove for the conduction contact part to move up and down are respectively formed on the base, and the connection terminal penetrates through the first groove. a groove and is electrically connected to the PCB board.

As a further improvement of the present invention, the static contact piece is disposed on the base, and the lower end of the static contact piece penetrates through the base and is electrically connected to the PCB board.

As a further improvement of the present invention, the connection terminal and the static contact piece are respectively welded and fixed on the PCB board, and a first abdication area is provided on the base at a position corresponding to the first torsion spring.

As a further improvement of the present invention, it also includes a balance frame arranged between the upper cover and the base, and a sound-emitting elastic member, a pressing block is arranged on the balance frame, and a guide is arranged on the base. In the natural state, one end of the sound-emitting elastic member extends below the pressing block and is located above the guiding inclined surface.

As a further improvement of the present invention, the sounding elastic member is a second torsion spring, and the second torsion spring is mainly composed of a second spring body and an elastic sounding part connected to the second spring body. The sounding part extends below the pressing block and above the guiding slope.

As a further improvement of the present invention, a second groove for embedding the second spring body and a second movable groove for the bouncing sounding part to bounce up and down are formed on the base.

As a further improvement of the present invention, the second spring body is fixed on the PCB board, and a second abdication area is defined on the base at a position corresponding to the second torsion spring.

As a further improvement of the present invention, an inclined surface is provided on the pressing block.

As a further improvement of the present invention, the balance frame is mainly composed of a balance rod A and a balance rod B crossed, the lower end of the balance rod A and the lower end of the balance rod B are respectively set on the base, the balance rod The upper end of A and the upper end of the balance rod B are respectively arranged on the upper cover.

As a further improvement of the present invention, a return spring is arranged on the base and below the upper cover.

As a further improvement of the present invention, an opening is provided in the middle of the base, and an LED light electrically connected to the PCB board is arranged at the opening.

The beneficial effects of the present utility model are:

(1) The upper cover is used as the pressing trigger to trigger the conduction and disconnection of the new conduction structure. Compared with the traditional guide core pressing structure, the internal structure is simplified, the key switch is made thinner, and the pressing is balanced and stable. At the same time, the torsion spring structure is used as the moving contact piece, which has a novel structure and is combined with the upper cover, and the on and off actions are triggered accurately.

(2) Through the design of the matching structure of the pressing block on the gimbal, the guiding slope on the base, and the sounding elastic member, in the process of the gimbal moving down under pressure, the sounding elastic member is guided by the guiding slope to escape the pressing The sound-emitting elastic piece can release the potential energy of tapping the base, or the base and the gimbal to make sound, making full use of the internal space of the key switch, and making the key switch as thin as possible, so that the key switch has a good tactile feeling during the pressing process. , and can generate sound during the pressing process to achieve a sound effect, the sound is loud, the effect is good, and the user experience is improved.

The above is an overview of the technical solution of the utility model. The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

Description of drawings

1 is an exploded view of Embodiment 1;

2 is a schematic diagram of the external structure of Embodiment 1;

3 is a schematic structural diagram of the combination of the first torsion spring and the upper cover in the first embodiment;

4 is a partial structural schematic diagram of Embodiment 1;

5 is a schematic structural diagram of a first torsion spring in Embodiment 1;

6 is a schematic structural diagram of a base in Embodiment 1;

7 is a schematic structural diagram of Embodiment 2;

8 is an exploded view of Embodiment 3;

FIG. 9 is a partial structural schematic diagram of Embodiment 3;

10 is a schematic structural diagram of the second torsion spring in the third embodiment;

11 is a schematic structural diagram of a gimbal in Embodiment 3;

FIG. 12 is a schematic structural diagram of the fourth embodiment.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

Example 1:

Referring to FIGS. 1 to 4 , the present embodiment provides an ultra-thin key switch, which includes a base 1 , an upper cover 2 disposed above the base 1 , a static contact piece 4 , and a contact piece 4 . Correspondingly, a movable contact elastic member 5 is provided, one end of the movable contact elastic member 5 extends to the upper cover 2, and one end of the movable contact elastic member 5 is triggered by the upper cover 2 to contact or separate from the static contact piece 4, so as to realize the conduction and separation of the key switch. Disconnect function.

In this embodiment, as shown in FIG. 3 , a locking position 211 is formed on the lower end surface of the upper cover 2 , and one end of the movable elastic member 5 is locked into the locking position 211 . Specifically, a hook 21 is extended downward on the lower end surface of the upper cover 2 , and the hook 211 is formed on the hook 21 . When the key switch is in the unpressed natural state, the hook 21 of the upper cover 2 lifts one end of the movable touch elastic member 5 upward, and the movable touch elastic member 5 is elastically deformed; at this time, the movable touch elastic member 5 and the static touch When the sheet 4 is separated, the key switch is in an off state. When the upper cover 2 is pressed down, the hook 21 moves downward, and the hook 21 completely or partially releases the lifting force on one end of the movable contact elastic member 5, so that the movable contact elastic member 5 elastically resets and moves down and the static When the contact piece 4 is in contact, the key switch is turned on. When the pressing on the upper cover 2 is released, the upper cover 2 moves up, the key switch returns to its natural state, and the hook 21 on the upper cover 2 lifts one end of the movable elastic member 5 upward again, so that the movable elastic member 5 Separated from the static contact piece 4, the key switch returns to the disconnected state.

In this embodiment, as shown in FIG. 4 and FIG. 5 , the movable contact elastic member 5 is a first torsion spring 5'. Specifically, the first torsion spring 5' is made of silver-copper material or copper wire. Has a high electrification rate. The first torsion spring 5 ′ is mainly composed of a first spring body 51 , a connecting terminal 52 connected to one end of the first spring body 51 , and a conductive contact portion 53 connected to the other end of the first spring body 51 . The conductive contact portion 53 extends to the locking position 211 of the hook 21 on the upper cover 2 , and the static contact piece 4 is located below the conductive contact portion 53 . At the same time, an extension portion 530 is bent upward and extends to the upper cover 2 at the end of the conductive contact portion 53 . When the key switch is in a natural state, the extension part 530 is lifted up by the hook 211 of the upper cover 2, so that the conductive contact part 53 is separated from the static contact piece 4, and the key switch is in an off state.

For the installation of the first torsion spring 5 ′, as shown in FIG. 4 and FIG. 6 , in this embodiment, a first groove 11 for embedding the first spring body 51 is formed on the base 1 respectively, and a first groove 11 for guiding Through a first movable groove 12 that moves up and down through the contact portion 53 , the connecting terminal 52 penetrates through the first groove 11 and is electrically connected to the PCB board. During the up and down movement of the upper cover 2, the conductive contact portion 53 moves up and down in the first movable groove 12, so as to contact or separate from the static contact piece 4 to achieve the purpose of turning on and off the key switch.

Meanwhile, the static contact piece 4 in this embodiment is disposed on the base 1 , and the lower end of the static contact piece 4 penetrates through the base 1 and is electrically connected to the PCB board.

Meanwhile, as shown in FIG. 4 , a return spring 6 is provided on the base 1 and below the upper cover 2 , and the return spring 6 provides elastic restoring force for the upward movement and reset of the upper cover 2 .

At the same time, an opening 17 is opened in the middle of the base 1, and an LED light 7 electrically connected to the PCB is arranged at the opening 17, so that the key switch has a lighting effect and improves user experience.

Embodiment 2:

The main difference between this embodiment and the first embodiment is that, as shown in FIG. 7 , the connection terminal 52 and the static contact piece 4 are respectively welded and fixed on the PCB board 10 , and the base 1 corresponds to the first torque A first abdication area 13 is defined at the position of the spring 5 ′, which provides an escape space for the conductive contact portion 53 of the first torsion spring 5 ′ to move up and down to achieve contact and separation with the static contact piece 4 .

In this embodiment, the connection terminal 52 of the first torsion spring 5 ′ and the static contact piece 4 are directly welded and fixed on the PCB board 10 , which simplifies the structure of the base 1 and facilitates a thinner overall thickness of the key switch.

Embodiment three:

The main difference between this embodiment and Embodiment 1 or Embodiment 2 is that, as shown in FIG. 8 and FIG. 9 , the key switch of this embodiment further includes a gimbal 3 disposed between the upper cover 2 and the base 1 , and A sound-emitting elastic member 8, a pressing block 35 is provided on the balance frame 3, and a guiding inclined surface 14 is provided on the base 1. In a natural state, one end of the sound-emitting elastic member 8 extends to the pressing block 35. below and above the guiding slope 14 .

In this embodiment, specifically, as shown in FIG. 9 and FIG. 10 , the sounding elastic member 8 is a second torsion spring 8 ′, specifically, the second torsion spring 8 ′ is made of stainless steel, that is, stainless steel A torsion spring, the second torsion spring 8' is mainly composed of a second spring body 81 and an elastic sounding part 82 connected to the second spring body 81. The elastic sounding part 82 extends to the bottom of the pressing block 35 and the guide above the lead slope 14. When the gimbal 3 is pressed down, it drives the pressing block 35 to move down, and the pressing block 35 presses the bouncing sounding part 82 down. When it is pressed down to a certain position, the guiding slope 14 on the base 1 guides the bouncing sounding part 82 comes out of the pressing block 35, and the bouncing sounding part 82 bounces due to the release of potential energy and taps the base 1, or the base 1 and the pressing block 35 to make a sound, so as to realize the function of pressing and sounding, the sound is loud and the effect is good.

Meanwhile, the pressing block 35 has an inclined surface 351 . When the pressing block 35 is pressed down, the setting of the inclined surface 351 further guides the movement of the bouncing sounding portion 82 of the second torsion spring 8 ′ to escape from the pressing block 35 .

For the installation of the second torsion spring 8 ′, as shown in FIG. 6 , in this embodiment, a second groove 15 for embedding the second spring body 81 and a sounding part 82 are formed on the base 1 in this embodiment. A second movable slot 16 that bounces up and down. When the pressing block 35 on the gimbal 3 is pressed and moved downward, the elastic sounding part 82 is pressed to move in the second movable groove 16 , and after the pressing block 35 is released, it bounces in the second movable groove 16 to produce sound Effect.

In this embodiment, as shown in FIG. 11 , the balance frame 3 is mainly formed by a balance rod A 32 and a balance rod B 33 crossed and arranged, the lower end 321 of the balance rod A 32 and the lower end of the balance rod B 33 331 are respectively arranged on the base 1 , and the upper end 322 of the balance rod A 32 and the upper end 332 of the balance rod B 33 are respectively arranged on the upper cover 2 . Specifically, the two ends of the lower end 321 of the balance rod A 32 and the two ends of the lower end 331 of the balance rod B 33 are respectively rotated and arranged on the base 1 through the rotating shafts (320, 330). Both ends of the upper end 332 of the rod B 33 are respectively rotated and arranged on the upper cover 2 through the rotating shafts (3220, 3320). When the upper cover 2 is pressed to move up and down, a force is applied to the balance frame 3, so that the balance bar A32 and the balance bar B 33 cooperate to swing up and down in a crisscross manner to achieve pressing balance and improve pressing stability.

Embodiment 4:

The main difference between this embodiment and the third embodiment is that, as shown in FIG. 12 , the second spring body 81 is fixed on the PCB board 10 and corresponds to the position of the second torsion spring 8 ′ on the base 1 There is a second abdication area 18 there, which provides an escape space for the bouncing sounding part 82 of the second torsion spring 8' to bounce up and down, knocking the base 1, or the base 1 and the pressing block 35 to make a sound.

In this embodiment, the second spring body 81 of the second torsion spring 8 ′ is fixed on the PCB board 10 , which simplifies the structure of the base 1 and facilitates a thinner overall thickness of the key switch.

The above are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model. Therefore, the same or similar technical features as the above-mentioned embodiments of the present utility model are adopted, and other structures are obtained. within the scope of protection of the present invention.

Claims (16)

1. An ultra-thin key switch, comprising a base, an upper cover positioned above the base, a static contact piece, and a moving elastic member corresponding to the static contact piece, wherein the moving touch One end of the elastic piece extends to the upper cover, and one end of the movable contact elastic piece is triggered by the upper cover to contact or separate from the static contact piece. 2 . The ultra-thin key switch according to claim 1 , wherein a latching position is formed on the lower end surface of the upper cover, and one end of the movable contact elastic member is clamped into the latching position. 3 . 3 . The ultra-thin key switch according to claim 2 , wherein a hook is extended downward on the lower end face of the upper cover, and the hook is formed on the hook. 4 . 4. The ultra-thin key switch according to claim 1, wherein the movable contact elastic member is a first torsion spring, and the first torsion spring is mainly composed of a first spring body connected to one end of the first spring body It consists of a connecting terminal and a conducting contact portion connected to the other end of the first spring body, the conducting contact portion extends to the upper cover, and the static contact piece is located under the conducting contact portion. 5 . The ultra-thin key switch according to claim 4 , wherein an end portion of the conductive contact portion has an extension portion that is bent upward and extends to the upper cover. 6 . 6 . The ultra-thin key switch according to claim 4 , wherein a first groove for the first spring body to be embedded in and a first groove for the conduction contact portion to move up and down are respectively formed on the base. 7 . The first movable groove, the connection terminal penetrates through the first groove and is electrically connected to the PCB board. 7 . The ultra-thin key switch according to claim 1 , wherein the static contact piece is disposed on the base, and the lower end of the static contact piece penetrates the base and is electrically connected to the PCB board. 8 . 8 . The ultra-thin key switch according to claim 4 , wherein the connection terminal and the static contact piece are respectively welded and fixed on the PCB, and at the position corresponding to the first torsion spring on the base. 9 . A first give way area is opened. 9. The ultra-thin key switch according to any one of claims 1 to 8, further comprising a gimbal and a sound-emitting elastic member disposed between the upper cover and the base, wherein the gimbal is positioned between the gimbal and the base. A pressing block is arranged on the base, and a guiding inclined surface is arranged on the base. In a natural state, one end of the sound-emitting elastic member extends below the pressing block and is located above the guiding inclined surface. 10. The ultra-thin key switch according to claim 9, wherein the sounding elastic member is a second torsion spring, and the second torsion spring is mainly composed of a second spring body and a second spring body connected to the second torsion spring. It consists of a bouncing sounding part, and the bouncing sounding part extends below the pressing block and above the guiding slope. 11. The ultra-thin key switch according to claim 10, wherein a second groove for the second spring body to be embedded in and a second groove for the bouncing sounding part to bounce up and down are formed on the base The second active slot. 12. The ultra-thin key switch according to claim 10, wherein the second spring body is fixed on the PCB, and a second torsion spring is provided on the base at a position corresponding to the second torsion spring. Give way area. 13 . The ultra-thin key switch according to claim 9 , wherein the pressing block has an inclined surface. 14 . 14 . The ultra-thin key switch according to claim 9 , wherein the balance frame is mainly formed by a balance rod A and a balance rod B crossed and arranged, and the lower end of the balance rod A and the lower end of the balance rod B are 14 . They are respectively arranged on the base, and the upper end of the balance bar A and the upper end of the balance bar B are respectively arranged on the upper cover. 15 . The ultra-thin key switch according to claim 1 , wherein a return spring is provided on the base and below the upper cover. 16 . 16. The ultra-thin key switch according to any one of claims 1 to 8, wherein an opening is formed in the middle of the base, and an LED light electrically connected to the PCB is provided at the opening.

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