WO2023103838A1

WO2023103838A1 - Sound-production key switch

Info

Publication number: WO2023103838A1
Application number: PCT/CN2022/134978
Authority: WO
Inventors: 吴福喜; 胡远锋
Original assignee: 东莞市凯华电子有限公司
Priority date: 2021-12-09
Filing date: 2022-11-29
Publication date: 2023-06-15
Also published as: TWM643658U; CN116259490A

Abstract

A sound-production key switch, comprising a base (1) and a guide core (2) provided on the base. At least one pressing bump (21) is provided on the guide core; a sound-production assembly (3) located on the side edge of the pressing bump is provided on the base; the sound-production assembly comprises a rotating push rod (31) rotatably provided on the base, and a metal dome (32) provided on the base and located on the side edge of the rotating push rod; and the rotating push rod comprises a rotating shaft (311) rotatably provided on the base, at least one push block (312) provided on the rotating shaft and corresponding to the pressing bump, and a knocking arm (313) provided on the rotating shaft and facing the metal dome. The sound-production key switch can realize a function of pressing to produce sound, and is accurate in an action of knocking to produce sound, clear in sound, and good in sound production effect. Meanwhile, the action of knocking to produce sound and a turn-on action occur at the same time, such that the effect of synchronization of turning on at the upper portion and producing sound at the lower portion is achieved, thereby implementing the function of pressing to produce sound while achieving the turn-on and turn-off functions of the key switch.

Description

A sounding key switch

technical field

The utility model relates to the field of key switches, in particular to a sounding key switch.

Background technique

At present, there are many key switches that can be pressed to produce sound on the market. Due to the unreasonable design of the sound structure of this key switch, the sound action is inaccurate and the sound effect is poor.

At the same time, the sound emitting component and the conduction component installed inside the key switch are separated from each other, and the problem of asynchronous sounding time and conduction time is prone to occur, which affects the overall use effect and poor user experience.

Utility model content

In view of the above disadvantages, the purpose of the utility model is to provide a sounding key switch, which can realize the function of pressing and sounding, and the sounding action of tapping is accurate, the sound is clear and crisp, and the sounding effect is good. At the same time, the sounding action of tapping and the conduction action occur at the same time, that is, the synchronous effect of the upper conduction and the lower sounding is realized, thereby realizing the function of turning on and off the key switch, and also realizing the function of pressing the sound.

The technical scheme that the utility model adopts for achieving the above object is:

A sounding key switch, comprising a base and a guide core arranged on the base, at least one pressing protrusion is arranged on the guide core, and a pressing protrusion located on the side of the pressing protrusion is arranged on the base The sounding component is characterized in that the sounding component includes a rotating push rod rotatably arranged on the base, and a metal dome arranged on the base and on the side of the rotating push rod, and the rotating push rod includes a rotating push rod arranged on A rotating shaft on the base, at least one push block arranged on the rotating shaft and corresponding to the pressing projection, and a knocking arm arranged on the rotating shaft and facing the dome.

As a further improvement of the utility model, a soft rubber pad is provided between the knocking arm and the dome.

As a further improvement of the utility model, a functional protrusion is respectively formed on both sides of the soft rubber pad.

As a further improvement of the utility model, a positioning block is provided on the side of the dome away from the knocking arm, and a positioning protrusion is arranged on the side of the positioning block towards the dome.

As a further improvement of the utility model, a support block for supporting the rotating shaft is formed on the base, a rotation slot for the rotating shaft to be embedded and rotated is formed on the support block, and a pot supplying pot is formed on the base. An embedding groove in which the chip is embedded, and a movable groove penetrating to the embedding groove and allowing the knocking arm to swing is formed on the support block.

As a further improvement of the utility model, a guiding inclined surface is formed on the side of the pressing projection close to the push block.

As a further improvement of the utility model, a positioning slot for the positioning block to be inserted is formed on the base.

As a further improvement of the utility model, a conduction assembly is provided on the base, and the conduction assembly includes a static piece and a moving piece respectively arranged on the base, a static contact is provided on the static piece, and A movable contact corresponding to the static contact is arranged on the movable piece, and a push arm acting on the movable piece is arranged on the rotating shaft.

As a further improvement of the utility model, the knocking arm extends below the rotating shaft, and the pushing arm extends above the rotating shaft.

As a further improvement of the utility model, the knocking arm and the pushing arm are integrated to form a swinging member.

As a further improvement of the present utility model, the number of the push blocks is two, which are respectively arranged on both sides of the swing member.

As a further improvement of the present invention, a return spring is provided between the guide core and the base, and an upper cover is provided on the base, and the upper end of the guide core passes through the upper cover for pressing.

The beneficial effects of the utility model are:

(1) Through the sound-generating component composed of a combination of a rotating push rod with a special structural design and a metal dome, the pressing and sounding function can be realized. The sounding action of tapping is accurate, the sound is crisp, and the sounding effect is good.

(2) Through the cooperation of the rotating push rod with a special structural design and the conducting assembly, during the rotation of the rotating shaft of the rotating push rod, the knocking arm and the pushing arm swing at the same time, and the sounding action of tapping and the conducting assembly The conduction action occurs at the same time, that is, the synchronous effect of the upper conduction and the lower sound is realized, so that the key switch can be turned on and off, and the pressing and sounding function can also be realized.

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

Description of drawings

Fig. 1 is the explosion diagram of the utility model;

Fig. 2 is a part of structural representation of the utility model;

Fig. 3 is the structural representation of base in the utility model;

Fig. 4 is the sectional view of the utility model;

Fig. 5 is the structural representation of rotating push rod in the utility model;

Fig. 6 is the structural representation of soft rubber pad in the utility model;

Fig. 7 is the structural representation of another part of the utility model;

Fig. 8 is a schematic diagram of the external structure of the utility model.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the predetermined purpose, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to Fig. 1 and Fig. 2, the embodiment of the utility model provides a kind of sound key switch, including a base 1, and a guide core 2 arranged on the base 1, on which at least one pressing Protrusion 21, on the base 1 is provided with a sounding component 3 located on the side of the pressing protrusion 21, the sounding component 3 includes a rotating push rod 31 that is rotatably disposed on the base 1, and is disposed on the base 1 A dome 32 on and positioned at the side of the rotary push rod 31. Specifically, as shown in FIG. 5 , the rotary push rod 31 includes a rotating shaft 311 rotatably disposed on the base 1 , at least one push block 312 disposed on the rotating shaft 311 and corresponding to the pressing protrusion 21 , and disposed on the rotating shaft. 311 and towards a knocking arm 313 of the metal dome 32, the pushing block 21 of the guide core 2 moves down to act on the push block 312 of the rotating push rod 31, so that the rotating shaft 311 is rotated, thereby driving the knocking arm 313 swings towards the metal dome 32, and knocks the metal metal dome 32 to make a sound.

When the pressing guide core 2 moves down, the pressing protrusion 21 on the guide core 2 acts on the push block 312 of the rotating push rod 31 as it moves down, and pushes the push block 312 outward, as shown in Figure 2, impels the rotating shaft 311 to reverse Clockwise rotation, correspondingly, the rotation of the rotating shaft 311 drives the knocking arm 313 to swing towards the metal dome 32 until the metal metal dome 32 is knocked to make a sound, realizing the function of pressing and sounding. At the same time, the metal metal dome 32 is elastically deformed. When the pressing on the guide core 2 is released, the guide core 2 moves upwards and resets, and the pressing protrusion 21 moves up and separates from the push block 312, and under the action of the elastic restoring force of the dome 32, the knocking arm 313 swings in the opposite direction , to drive the rotating shaft 311 to rotate clockwise to reset. Through the special structural design of the sound-generating component 3 composed of the rotating push rod 31 and the metal dome 32, the function of pressing the sound-generating can be realized, and the tapping action is accurate and the sound is clear and crisp.

In this embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 4 , a soft rubber pad 33 is disposed between the knocking arm 313 and the dome 32 . When the knocking arm 313 swings towards the dome 32, the knocking arm 313 acts on the dome 32 through the soft rubber pad 33, that is, the soft rubber pad 33 directly hits the dome 32 instead of the knocking arm. 313 directly knocks the dome 32, because the soft rubber pad 33 has the characteristics of elasticity and softness, it can prolong the service life of the dome 32 and the whole product while knocking and sounding.

At the same time, in order to make the knocking action more accurate, as shown in FIG. 4 and FIG. 6 , in this embodiment, a functioning protrusion 331 is respectively formed on both sides of the soft rubber pad 33 . When the knocking action occurs, the knocking arm 313 directly acts on the action protrusion 331 on one side, and the action protrusion 331 on the other side directly acts on the dome 32, the action point is accurate, and the accuracy of the knocking action is improved .

In this embodiment, as shown in FIG. 1 , FIG. 2 and FIG. 4 , a positioning block 34 is arranged on the side of the metal dome 32 away from the knocking arm 313 , and the positioning block 34 faces the metal metal dome. One side of 32 is provided with a positioning protrusion 341 . A positioning slot 13 for the positioning block 34 to be inserted is formed on the base 1 . When knocking the dome 32, the dome 32 can be deformed, and the deformation amount of the dome 32 is controlled by the positioning block 34 with the positioning protrusion 341, that is, the stroke of the dome 32 is positioned, thereby It is beneficial to improve the accuracy of the tapping action.

For the installation of the rotating push rod 31 and the dome 32, as shown in Figure 2 and Figure 3, a support block 11 is formed on the base 1 in this embodiment to support the rotating shaft 311, and a support block 11 is formed on the support block 11. There is a rotation slot 111 for the rotating shaft 311 to be inserted and rotated, an insertion groove 12 for insertion of the metal dome 32 is formed on the base 1, and an insertion groove 12 is formed on the support block 11 to penetrate into the insertion groove 12 and be used for knocking. An active slot 112 through which the striking arm 313 swings. Specifically, the rotating shaft 311 in this embodiment is cylindrical, and correspondingly, the rotating slot 111 is a matching arc-shaped slot. When the pressing protrusion 21 on the guide core 2 moves down and pushes the push block 312 outward, the rotating shaft 311 rotates counterclockwise in the rotating slot 111, and at the same time, drives the knocking arm 313 to swing toward the dome 32 through the movable slot 112 , thereby knocking the dome 32. The special groove structure design on the base 1 facilitates the accurate movement of the rotating push rod 31 and the dome 32 after they are installed.

In order to press the projection block 21 to better act on the push block 312, as shown in Figure 2, a guide slope 211 is formed on the side of the push block 21 close to the push block 312. Due to the existence of the guide slope 211 of the pressing protrusion 21 , when the guide core 2 drives the pressing protrusion 21 to move down, the guide slope 211 can gradually push the push block 312 outward, thereby realizing a stable force on the rotating shaft 311 .

In this embodiment, as shown in FIG. 1 and FIG. 7 , a conduction assembly 4 is provided on the base 1 , specifically, the conduction assembly 4 includes a static piece 41 respectively provided on the base 1 With a moving piece 42, a static contact 411 is provided on the static piece 41, a moving contact 421 corresponding to the static contact 411 is provided on the moving piece 42, and a moving contact 421 that acts on the moving piece is arranged on the rotating shaft 311. A pushing arm 314 of 42. When the guide core 2 is in a static and unpressed state, the push arm 314 pushes the moving piece 42 outward, so that the moving contact 421 of the moving piece 42 is separated from the static contact 411, and the conduction component 4 is disconnected, that is, the key switch is turned off. state. When the pressing guide core 2 moves down, the pressing protrusion 21 on the guide core 2 acts on the push block 312 of the rotating push rod 31 as it moves down, and pushes the push block 312 outward, as shown in Figure 7, impels the rotating shaft 311 to reverse Clockwise rotation, correspondingly, the rotation of the rotating shaft 311 drives the percussion arm 313 to swing towards the dome 32 until the dome 32 is struck to make a sound; at the same time, the rotation of the rotating shaft 311 drives the pushing arm 314 to swing in the direction of the guide core 2 , so that the push arm 314 releases the outward force on the moving piece 42, and the moving piece 42 moves closer to the static piece 41 due to reset, so that the moving contact 421 contacts the static contact 411, and the conduction component 4 conducts, that is, the button switch is on. When the pressing on the guide core 2 is released, the guide core 2 moves upwards and resets, and the pressing projection 21 is separated from the push block 312 as it moves up, and under the action of the elastic restoring force of the dome 32, the knocking arm 313 swings in the opposite direction , drive the rotating shaft 311 to rotate clockwise to reset, then the push arm 314 swings outward to reset, and acts on the moving piece 42 again, so that the moving contact 421 of the moving piece 42 is separated from the static contact 411, and the key switch returns to the off state.

In this embodiment, as shown in FIG. 5 , the tapping arm 313 extends below the rotating shaft 311 , and the pushing arm 341 extends above the rotating shaft 311 . At the same time, the knocking arm 313 is integrated with the pushing arm 314 to form a swinging member 310 . During the rotation of the rotating shaft 311, the swinging member 310 is driven to swing, that is, the knocking arm 313 and the pushing arm 314 swing at the same time, and the sounding action of knocking and the conducting action of the conduction component 4 occur simultaneously, thereby realizing the key switch At the same time as the on and off functions, it can also realize the function of pressing and sounding.

In this embodiment, in order to improve the rotation balance of the rotary push rod 31 , the number of the push blocks 312 is two, which are respectively arranged on both sides of the swing member 310 . Correspondingly, there are also two pressing protrusions 21, which correspond to the pushing blocks 312 one by one. When the guide core 2 moves down, the pressing projection 21 acts on the push block 312 from both sides, so that the rotating push rod 31 rotates stably and improves the rotation balance.

In a specific key switch product, as shown in Figure 8, a return spring 5 is arranged between the guide core 2 and the base 1, and the return spring 5 provides elastic restoring force for the upward movement and reset of the guide core 2; at the same time, An upper cover 6 is arranged on the base 1, and the upper end of the guide core 2 passes through the upper cover 6 for pressing.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, other structures obtained by adopting the same or similar technical characteristics as the above-mentioned embodiments of the present utility model can be obtained. Within the protection scope of the present utility model.

Claims

A sounding key switch, comprising a base and a guide core arranged on the base, at least one pressing protrusion is arranged on the guide core, and a pressing protrusion located on the side of the pressing protrusion is arranged on the base The sounding component is characterized in that the sounding component includes a rotating push rod rotatably arranged on the base, and a metal dome arranged on the base and on the side of the rotating push rod, and the rotating push rod includes a rotating push rod arranged on A rotating shaft on the base, at least one push block arranged on the rotating shaft and corresponding to the pressing projection, and a knocking arm arranged on the rotating shaft and facing the dome.
The sounding key switch according to claim 1, wherein a soft rubber pad is arranged between the knocking arm and the dome.
The sounding key switch according to claim 2, characterized in that, a functioning protrusion is respectively formed on both sides of the soft rubber pad.
The sounding key switch according to claim 1, wherein a positioning block is arranged on the side of the metal dome away from the knocking arm, and a positioning block is arranged on the side of the positioning block facing the metal dome. Locating bumps.
The sounding key switch according to claim 1, wherein a supporting block for supporting the rotating shaft is formed on the base, and a rotating slot for inserting and rotating the rotating shaft is formed on the supporting block. An embedding groove for embedding the metal dome is formed on the base, and a movable groove penetrating through the embedding groove and allowing the knocking arm to swing is formed on the support block.
The sounding key switch according to claim 1, characterized in that, a guiding inclined surface is formed on the side of the pressing protrusion close to the push block.
The sounding key switch according to claim 4, wherein a positioning slot for the positioning block to be inserted is formed on the base.
The sounding key switch according to any one of claims 1 to 7, characterized in that, a conduction component is provided on the base, and the conduction component includes a static piece and a moving piece respectively arranged on the base , a static contact point is set on the static piece, a moving contact point corresponding to the static contact point is set on the moving piece, and a push arm acting on the moving piece is set on the rotating shaft.
The sounding key switch according to claim 8, wherein the tapping arm extends below the rotating shaft, and the pushing arm extends above the rotating shaft.
The sounding key switch according to claim 9, characterized in that, the knocking arm is connected with the pushing arm to form a swinging member.
The key switch with sound according to claim 10, characterized in that there are two push blocks, which are respectively arranged on both sides of the swing member.
The sounding key switch according to any one of claims 1 to 7, wherein a return spring is arranged between the guide core and the base, an upper cover is arranged on the base, and the guide core The upper end passes through the upper cover for pressing.