CN210956517U - Key switch with pressing sounding function - Google Patents

Abstract

The utility model discloses a key switch with press sound production function, which comprises a base, and locate the lid of base top, the lid combines together with the base and forms the holding chamber, be provided with respectively at the holding intracavity and lead the core, and be located the elastic component of leading core below, still including locating the holding intracavity and be located the elasticity sound production subassembly of leading the core side, be formed with a side notch at this core side of leading, this elasticity sound production subassembly is including passing an upper elastic piece of side notch, set up on the base and connect in a first shell fragment of upper elastic piece one end, and set up on the base and connect in shell fragment under the second of the upper elastic piece other end. The utility model provides a key switch has good feeling pressing the in-process to realize pressing twice vocal function, promote user experience, whole process action accuracy is high, and structural stability is high, and vocal effect's short-trigger sensitive accuracy.

Description

Key switch with pressing sounding function

Technical Field

The utility model relates to a key switch especially relates to a key switch with press sound production function.

Background

Many operations of electronic equipment need to use a key switch as an input means, and the quality of the key switch determines the experience of the input equipment, so that the key switch is required to have good hand feeling and sound feeling. Therefore, the sounding key switch appears on the market, but most of the sounding key switches can sound when the guide core is pressed to move downwards, and cannot sound when the guide core moves upwards to reset. Namely, in the working cycle of descending and rebounding of the key switch, the key switch only sounds once, and the higher requirement of the user on the sound sensation cannot be met.

SUMMERY OF THE UTILITY MODEL

To the above, it is not enough that an object of the utility model is to provide a key switch with press sound producing function has good feeling pressing the in-process to realize pressing twice sound producing function, promote user experience, whole process action accuracy is high, and structural stability is high, and sound producing effect's the sensitive accuracy of encouraging.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

the utility model provides a key switch with press sound production function, which comprises a base, and set up in a lid of base top, this lid combines together with the base and forms a holding chamber, be provided with a guide core respectively in this holding intracavity, and be located a elastic component of guide core below, a serial communication port, still including setting up in the holding intracavity and being located an elasticity sound production subassembly of guide core side, be formed with a side notch at this guide core side, this elasticity sound production subassembly is including passing a last shell fragment of side notch, set up on the base and connect in a first shell fragment of last shell fragment one end, and set up on the base and connect in shell fragment under the second of the last shell fragment other end.

As a further improvement, the utility model is provided with a lug on the side of the guide core, and two blocks of check blocks are arranged on the outer side edge of the lug, and a side notch is formed between the two blocks of check blocks.

As a further improvement of the utility model, two outer side edges at two ends of the upper elastic sheet are respectively provided with a notch, so that two ends of the upper elastic sheet are respectively provided with an insertion block.

As a further improvement of the present invention, the upper spring plate is horizontally disposed on the side of the guide core, and the middle portion of the upper spring plate is located in the side notch.

As a further improvement, the first lower elastic piece is vertically arranged at one end of the upper elastic piece, and the second lower elastic piece is vertically arranged at the other end of the upper elastic piece.

As a further improvement of the present invention, a socket for inserting the insert is provided on the first lower elastic piece and the second lower elastic piece respectively.

As a further improvement of the present invention, the first lower spring plate and the second lower spring plate have the same structure, and respectively include a longitudinal spring plate, a connecting spring plate connected to the upper end portion of the longitudinal spring plate and bent toward the upper spring plate and extending downward, and an installation plate connected to the lower end portion of the longitudinal spring plate and bent toward the direction away from the upper spring plate and extending upward, wherein the connecting spring plate is connected to the upper end portion of the longitudinal spring plate through an upper arc-shaped connecting piece of the end portion, and the installation plate is connected to the lower end portion of the longitudinal spring plate through a lower arc-shaped connecting piece of the end portion; the socket is arranged on the connecting elastic sheet.

As a further improvement, the base is provided with a mounting groove for embedding and moving the elastic sounding component, and a clamping position for clamping the longitudinal elastic piece and the mounting piece is formed in the mounting groove.

As a further improvement, the side upper convex of the longitudinal elastic piece close to the installation piece is provided with at least one convex edge.

As a further improvement, the installation sheet upper end both sides limit is formed with a chimb respectively, is formed with the supporting shoe that is used for supporting the chimb in this screens.

As a further improvement of the utility model, a positioning inserting column extends downwards at the lower end of the guide core, and an annular abdicating groove is formed at the periphery of the positioning inserting column; a guide post is convexly arranged on the base upwards, and a guide slot for inserting the positioning insertion post is concavely arranged on the upper end surface of the guide post downwards; the elastic piece is a spring, the upper end of the spring is sleeved on the periphery of the positioning insertion column, and the lower end of the spring is sleeved on the periphery of the guide column.

As a further improvement of the present invention, the present invention further comprises a mechanical conduction assembly inserted on the base, the mechanical conduction assembly comprises a moving plate inserted on the base and a static plate inserted on the base and located inside the moving plate, a moving contact is arranged on the side surface of the moving plate, and a static contact corresponding to the moving contact is arranged on the side surface of the static plate; a convex hull is convexly arranged on one side of the movable sheet close to the guide core, and a pressing convex block corresponding to the convex hull is arranged on the side of the guide core.

As a further improvement, the guide slot runs through to terminal surface under the base, is provided with an LED lamp of electricity connection on the PCB board under this guide slot.

As a further improvement, the utility model also includes a magnetism conduction assembly, and this magnetism conduction assembly is including setting up a magnet in the post is inserted in the location and setting up in a magnetic inductor of magnet below, wherein, inserts a lower extreme face-up and offers an upper groove that supplies the magnet embedding in this location, inwards protruding a plurality of stoppers that are located the magnet lower extreme that are equipped with on this upper groove inner wall.

The utility model has the advantages that: the elastic sounding assembly formed by combining the upper elastic sheet, the first lower elastic sheet and the second lower elastic sheet is additionally arranged and is matched with a side notch on the side edge of the guide core, in the process of up-and-down movement of the guide core, because the upper elastic sheet is positioned in the side notch, the up-and-down movement of the guide core can promote the state of the upper elastic sheet to change, and the elastic action of the first lower elastic sheet and the elastic action of the second lower elastic sheet are matched, so that the upper elastic sheet bounces to impact the lower inner wall of the side notch to sound when moving downwards, and the upper elastic sheet bounces to impact the upper inner wall of the side notch to sound when moving upwards, the whole working cycle is that the upper elastic sheet and the lower elastic sheet respectively sound once, the two-time sounding effect is realized, the higher requirements of users on the sound sensation are met, the; meanwhile, the pressing hand feeling is improved, and the user experience is improved.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is an exploded view of the first embodiment;

FIG. 2 is a schematic external structural view according to the first embodiment;

FIG. 3 is a schematic structural diagram of a part of the first embodiment;

FIG. 4 is a schematic view of a structure of a guide core combined with an elastic sound generating component according to an embodiment;

FIG. 5 is a schematic view of a guide core according to an embodiment;

FIG. 6 is a schematic structural diagram of an exemplary embodiment of an elastic sound generating assembly;

FIG. 7 is a schematic structural diagram of an upper spring plate according to an embodiment;

fig. 8 is a schematic structural view of a first lower resilient sheet according to the first embodiment;

FIG. 9 is a schematic structural diagram of a base according to an embodiment;

FIG. 10 is a partial cross-sectional view of a first embodiment of a push button switch in an un-depressed state;

FIG. 11 is another partial cross-sectional view of the first embodiment with the keyswitch in an un-depressed position;

FIG. 12 is a partial cross-sectional view of a portion of a guide core according to one embodiment pressed to a stroke;

FIG. 13 is another partial cross-sectional view of the guide core pressed to a stroke according to one embodiment;

FIG. 14 is a partial cross-sectional view of a portion of a guide core pressed to a lowermost end according to one embodiment;

FIG. 15 is another partial cross-sectional view of a guide core pressed to a lowermost end in accordance with one embodiment;

FIG. 16 is a partial cross-sectional view of the upper shift back to a stroke of the guide core according to one embodiment;

FIG. 17 is a partial cross-sectional view of the upper shift of the guide core to its initial position in accordance with one embodiment;

FIG. 18 is another partial schematic structural view according to the first embodiment;

FIG. 19 is a cross-sectional view of the first embodiment;

FIG. 20 is an exploded view of the second embodiment;

FIG. 21 is a schematic view of a second embodiment of a core;

FIG. 22 is a cross-sectional view of the second embodiment;

FIG. 23 is a diagram illustrating a position relationship between the magnet and the magnetic sensor when the second push switch is in a natural state according to the embodiment;

FIG. 24 is a diagram illustrating a positional relationship between a magnet and a magnetic sensor when the second push switch of the embodiment is pressed.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

The first embodiment is as follows:

referring to fig. 1 to 6, an embodiment of the present invention provides a key switch with a pressing sound generating function, including a base 1, a cover 2 disposed above the base 1, the cover 2 and the base 1 being combined to form an accommodating cavity, a core 3 and an elastic member 4 disposed below the core 3 being disposed in the accommodating cavity, the elastic member 4 providing an elastic restoring force for the core 3 to be pressed up and down, and an opening for the upper end of the core 3 to penetrate out being formed on the cover 2, the key switch further includes an elastic sound generating assembly 5 disposed in the accommodating cavity and located at a side of the core 3, a side notch 31 being formed at a side of the core 3, as shown in fig. 4 and 5, and as shown in fig. 4 and 6, the elastic sound generating assembly 5 includes an upper elastic piece 51 passing through the side notch 31, a first lower elastic piece 52 disposed on the base 1 and connected to one end of the upper elastic piece 51, and a second lower elastic piece 53 disposed on the base 1 and connected to the other end of the upper elastic piece 51, and a second lower elastic piece disposed at a middle of the upper elastic piece 3551, and a lower elastic piece disposed at a longitudinal end of the upper elastic piece, and a lower elastic piece, wherein the upper elastic piece is disposed at a transverse notch 51 and a lower elastic piece, and a lower elastic piece disposed at the middle of the upper elastic piece, and a lower elastic piece.

In the present embodiment, the material, elastic coefficient, thickness, etc. of the upper elastic sheet 51, the first lower elastic sheet 52 and the second lower elastic sheet 53 can be selected according to specific needs, preferably, the material of the upper elastic sheet 51, the first lower elastic sheet 52 and the second lower elastic sheet 53 is SUS301 stainless steel, i.e. stainless steel elastic sheet, and the elastic coefficient is 1906N/mm²The thickness is 0.05mm, and the rubber is a general material, and has the characteristics of large elasticity and long service life.

The stainless steel elastic sheet is subjected to a tensile test, and the following parameters are obtained:

hardness: 505 HV; density: 7.93g/cm³；

Tensile strength: 1422N/mm;

yield strength: 1275N/mm;

elongation percentage: 7 percent;

longitudinal elastic modulus (20 ℃): 193KN/mm²。

The stainless steel spring plates with the performance are used as the upper spring plate 51, the first lower spring plate 52 and the second lower spring plate 53, so that the upper spring plate 51 can sound when knocking the key switch guide core, and the direct impact force on the guide core can be weakened.

This embodiment is at the in-process that leads core 3 and reciprocate, because last shell fragment 51 is arranged in side notch 31, lead reciprocating of core 3 can be promoted to go up shell fragment 51 state and change to cooperate by the elastic force effect of shell fragment 53 under first shell fragment 52 and the second, striking side notch 31 lower inner wall sound production when going up shell fragment 51 and striking side notch 31 upper inner wall sound production when going up shell fragment 51, so whole process is that push down once with each sound production of last shell, realize twice sound production effect.

In the present embodiment, as shown in fig. 5, specifically, a protrusion 32 is disposed on a side of the guide core 3, two blocks 33 are disposed on an outer side of the protrusion 32, and the side notch 31 is formed between the two blocks 33. Due to the arrangement of the two stoppers 33, when the guide core 3 is pressed and moved downwards, the stopper 33 positioned at the upper end of the side notch 31 applies downward acting force to the upper elastic sheet 51, so that the upper elastic sheet 51 changes state downwards; when the guide core 3 moves upwards and returns, the stopper 33 at the lower end of the side notch 31 applies an upward acting force to the upper elastic sheet 51, so that the upper elastic sheet 51 changes the state upwards. When the upper elastic sheet 51 moves downwards, the stopper 33 at the lower end of the impact side notch 31 sounds, when the upper elastic sheet 51 moves upwards, the stopper 33 at the upper end of the impact side notch 31 sounds, and the whole process is that the upper elastic sheet and the lower elastic sheet are pressed downwards and respectively sounds once. Therefore, the design of the upper side notch 31 of the guide core 3 is used for driving the upper elastic sheet 51 to move up and down and striking the sound producing part.

As shown in fig. 7, a notch 511 is formed on each of two outer sides of two ends of the upper resilient sheet 51, so that an insertion block 512 is formed on each of two ends of the upper resilient sheet 51. Meanwhile, as shown in fig. 6 and 8, the first lower elastic piece 52 and the second lower elastic piece 53 are respectively provided with a socket (521,531) for the insertion block 512 to insert into. The insertion block 512 is matched with the insertion holes (521,531), so that the movable connection between the upper elastic sheet 51 and the first lower elastic sheet 52 and between the upper elastic sheet 51 and the second lower elastic sheet 53 is realized, the connection relation is ensured, meanwhile, the upper elastic sheet 51, the first lower elastic sheet 52 and the second lower elastic sheet 53 are not fixedly connected, and the upper elastic sheet 51, the first lower elastic sheet 52 and the second lower elastic sheet 53 are convenient to deform respectively to play respective roles.

In the present embodiment, as shown in fig. 6 and 8, the first lower elastic sheet 52 and the second lower elastic sheet 53 have the same structure, and the first lower elastic sheet 52 is described in detail below. As shown in fig. 8, the first lower resilient tab 52 includes a longitudinal resilient tab 522, a connecting resilient tab 523 connected to the upper end of the longitudinal resilient tab 522 and bent toward the upper resilient tab 51 and extending downward, and a mounting tab 524 connected to the lower end of the longitudinal resilient tab 522 and bent away from the upper resilient tab 51 and extending upward, wherein the connecting resilient tab 523 is connected to the upper end of the longitudinal resilient tab 522 via an upper curved connecting tab 5231 at the end thereof, and the mounting tab 524 is connected to the lower end of the longitudinal resilient tab 522 via a lower curved connecting tab 5241 at the end thereof; the socket 521 is arranged on the connecting spring 523. Meanwhile, at least one rib 5221 is convexly arranged on the side surface of the longitudinal elastic piece 522 close to the mounting piece 524.

In the present embodiment, as shown in fig. 9, a mounting groove 11 for the elastic sound component 5 to be inserted and moved is formed on the base 1, and a locking portion 111 for the longitudinal elastic piece 522 and the mounting piece 524 to be locked is formed in the mounting groove 11.

By the special structural design of the first lower elastic sheet 52 and the second lower elastic sheet 53, the assembly of the first lower elastic sheet 52 and the second lower elastic sheet 53 on the base 1 is facilitated, and in the process that the guide core 3 moves up and down, the first lower elastic sheet 52 and the second lower elastic sheet 53 are convenient to deform, so that the resilience force of the first lower elastic sheet 52 and the second lower elastic sheet 53 promotes the upper elastic sheet 51 to generate elastic movement, and the stop block 33 of the guide core 3 is hit to make a sound.

Meanwhile, a convex edge 5241 is formed on each of the two sides of the upper end of the mounting piece 524, and a supporting block 112 for supporting the convex edge 5241 is formed in the locking position 111, so that the first lower resilient tab 52 and the second lower resilient tab 53 are better mounted on the base 1.

This embodiment is pressing the in-process that leads core 3 and reciprocate, can realize the sound production effect by elasticity sound production subassembly 5. The specific pressing sounding principle is as follows:

as shown in fig. 10 and 11, the key switch is in a natural non-pressed state, and the upper resilient sheet 51 is in a flat state when not assembled, and is assembled in the insertion holes (521,531) of the first lower resilient sheet 52 and the second lower resilient sheet 53, and then is pressed by the inward resilient force of the first lower resilient sheet 52 and the second lower resilient sheet 53 to be in an upper arch shape. At this time, the middle part of the upper spring plate 51 is positioned in the side notch 31 on the side of the guide core 3, and the upper spring plate 51 is in a free installation state.

As shown in fig. 12 and 13, the guide core 3 is pressed downward to make the stopper 33 at the upper end of the side notch 31 apply a downward acting force to the upper resilient sheet 51, so that the upper resilient sheet 51 becomes a straightened state, and meanwhile, the first lower resilient sheet 52 and the second lower resilient sheet 53 are pushed to both sides, so that the longitudinal resilient sheets 522 and the connecting resilient sheet 523 on the first lower resilient sheet 52 and the second lower resilient sheet 53 are outwardly sprung apart to deform. At this time, the upper spring plate 51 is just in contact with the stopper 33 at the upper end of the side notch 31, and the upper spring plate 51 is in a downward flattening and straightening state.

As shown in fig. 14 and 15, as the guide core 3 is continuously pressed downward, the upper spring plate 51 moves downward, and the first lower spring plate 52 and the second lower spring plate 53 rebound inward rapidly, so that the upper spring plate 51 springs downward rapidly under the action of force, and collides with the stopper 33 at the lower end of the side notch 31 to generate a sound. At this time, the upper elastic sheet 51 changes from the straight state to the downward bent state, that is, the upper elastic sheet 51 is in the downward springing sounding state.

As shown in fig. 16, when the pressing on the guide core 3 is released, the guide core 3 moves upward under the elastic restoring force of the elastic element 4, so that the stopper 33 at the lower end of the side notch 31 applies an upward acting force to the upper elastic sheet 51, and the upper elastic sheet 51 rapidly rebounds and returns to the extended state, and meanwhile, the first lower elastic sheet 52 and the second lower elastic sheet 53 are pushed to both sides, so that the longitudinal elastic sheets 522 and the connecting elastic sheet 523 on the first lower elastic sheet 52 and the second lower elastic sheet 53 are outwardly sprung to deform. At this time, the upper spring plate 51 is in an upward recovery straight state.

As shown in fig. 17, as the guide core 3 moves upward, the first lower resilient sheet 52 and the second lower resilient sheet 53 rebound inward rapidly, so that the upper resilient sheet 51 springs upward rapidly under the action of force, and collides with the stopper 33 at the upper end of the side slot 31 to generate sound. At this time, the upper elastic sheet 51 changes from a straight state to an upward bent state, that is, the upper elastic sheet 51 is in an upward rebounding sounding state.

In the whole process, the up-and-down movement of the guide core 3 drives the upper elastic sheet 51, the first lower elastic sheet 52 and the second lower elastic sheet 53 to move simultaneously, the stop 33 at the lower end of the impact side notch 31 sounds when the upper elastic sheet 51 moves downwards, and the stop 33 at the upper end of the impact side notch 31 sounds when the upper elastic sheet 51 moves upwards, so that the whole process is that the pressing and the upper elastic sheets respectively sound once, and the total number is two.

In the present embodiment, the stroke of the guide core 3 under the action of the downward pressure and the resilience force of the elastic member 4 (spring) is the same as the movement stroke (the distance between the highest point of upward bending and the lowest point of downward bending) of the upper elastic sheet 51, and preferably, the stroke is 4.3 mm; as shown in fig. 10, the height h1 of the side notch 31 (the distance between the upper end stopper and the lower end stopper of the side notch 31) is smaller than the height h2 of the upper resilient piece 51. Therefore, in the process of moving the guide core 3 up and down, the upper elastic sheet 51 can strike the stopper 33 on the side notch 31 to generate sound, and the upper elastic sheet 51 generates enough elastic force to impact the stopper 33 at the upper end and the lower end of the side notch 31 to generate larger sound.

As shown in fig. 5 and 9, a positioning post 35 is extended downward from the lower end of the guide core 3, and an annular relief groove 36 is formed on the periphery of the positioning post 35; a guiding column 12 is provided on the base 1 in a protruding manner, and a guiding slot 121 for inserting the positioning insertion column 35 is provided on the upper end surface of the guiding column 12 in a downward recessed manner. As shown in fig. 19, the elastic element 4 is a spring, the upper end of the spring is sleeved on the periphery of the positioning insertion column 35, and the lower end of the spring is sleeved on the periphery of the guide column 12 to provide elastic force for the resilience of the guide core. In this embodiment, the elastic force of the spring is 50 ± 10gf, and the stroke of the guide core 3 from the depression to the upward spring is 4.3 mm.

In this embodiment, the key switch further includes a mechanical conduction assembly 6 inserted in the base 1, as shown in fig. 18, the mechanical conduction assembly 6 includes a moving plate 61 inserted in the base 1, and a fixed plate 62 inserted in the base 1 and located inside the moving plate 61, a moving contact is disposed on a side surface of the moving plate 61, and a fixed contact corresponding to the moving contact is disposed on a side surface of the fixed plate 62; a convex hull 612 is convexly arranged on one side of the moving plate 61 close to the guide core 3, and a pressing convex block 34 corresponding to the convex hull 612 is arranged on the side of the guide core 3.

The conduction principle of the mechanical conduction assembly 6 in this embodiment is as follows: when the button switch is in the non-pressed state, the pressing bump 34 on the side of the guide core 3 is just positioned on the inner side of the convex hull 612 on the side of the moving plate 61, and pushes the convex hull 612 outwards to cause the whole moving plate 61 to deform outwards, so that the moving contact on the moving plate 61 is separated from the static contact on the static plate 62, and the button switch is in the off state; when the pressing guide core 3 moves downwards, the pressing lug 34 moves downwards, when the pressing lug 34 moves downwards to the position below the convex hull 612 of the movable piece 61, the pressing pushing force of the pressing lug 34 on the convex hull 612 disappears, the movable piece 61 rebounds, the movable contact on the movable piece 61 is in contact with the fixed contact on the fixed piece 62 again, and the key switch is in a conducting state.

In this embodiment, the key switch further has a middle light-emitting function, as shown in fig. 19, the guiding slot 121 penetrates through to the lower end surface of the base 1, and an LED lamp 8 electrically connected to the PCB is disposed right below the guiding slot 121. The light emitted by the LED lamp 8 is diffused out through the direction of the central shaft of the guide core 3 through the guide slot 121, so that the middle light-emitting effect is realized.

Example two:

the main difference between the present embodiment and the first embodiment is that the conducting component of the key switch of the present embodiment is different from the first embodiment, the conducting component of the present embodiment is a magnetic conducting component 7, as shown in fig. 20 to 22, the magnetic conducting component 7 includes a magnet 71 disposed in the positioning insertion column 35 and a magnetic inductor 72 disposed below the magnet 71, wherein an upper groove 351 for embedding the magnet 71 is disposed upward at the lower end of the positioning insertion column 35, and a plurality of limiting blocks 352 disposed at the lower end of the magnet 71 are inwardly and convexly disposed on the inner wall of the upper groove 351. The upper groove 351 limits the position of the magnet 71, and the magnet 71 moves up and down along with the up and down movement of the guide core 3.

In the present embodiment, the magnetic sensor 72 may be of various types, preferably, a hall element of a3144EUAE type is used as the magnetic sensor 72, and of course, other types of magnetic sensors 72, such as ASI-CSMS-R-S, MEM-Q05PS/M03-K2, etc., may be used. The magnetic inductor 72 may be disposed on the PCB, and usually the base 1 is disposed on the upper end surface of the PCB, in this embodiment, the magnet 71 is combined with the magnetic inductor 72 to implement the on and off functions of the magnetic key switch. Of course, the magnetic sensor 72 of the present embodiment may also be connected to other controllers through a connection wire. The specific principle is as follows: as shown in fig. 23, in a natural state, when the distance between the magnet 71 on the core 3 and the magnetic inductor 72 on the PCB is far enough, specifically, when the distance H1 between the magnet 71 and the magnetic inductor 72 is greater than 4mm, the magnetic inductor 72 on the PCB does not sense the magnetism of the magnet 71 in the core 3, and the circuit is disconnected, that is, the key switch is in an off state; when the core 3 is pressed downward, as shown in fig. 24, the core 3 drives the magnet 71 to move downward, and when the core 3 is pressed downward to a certain stroke, the magnet 71 and the magnetic sensor 72 on the PCB reach a certain distance, specifically, when the distance H2 between the magnet 71 and the magnetic sensor 72 is less than 3mm, the magnetic sensor 72 senses magnetism, and the circuit is turned on, that is, the key switch is in a conducting state. When the pressing of the guide core 3 is released, the guide core 3 is rebounded by the elastic restoring force of the elastic member 4 (spring) to return to the natural state. One descending and rebounding of the key switch is a working period, and the key switch works once.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims (14)

1. The utility model provides a key switch with press sound production function, which comprises a base, and set up in a lid of base top, this lid combines together with the base and forms a holding chamber, be provided with a guide core respectively in this holding intracavity, and be located a elastic component of guide core below, a serial communication port, still including setting up in the holding intracavity and being located an elasticity sound production subassembly of guide core side, be formed with a side notch at this guide core side, this elasticity sound production subassembly is including passing a last shell fragment of side notch, set up on the base and connect in a first shell fragment of last shell fragment one end, and set up on the base and connect in shell fragment under the second of the last shell fragment other end.

2. The push button switch with function of sound generation by pressing as claimed in claim 1, wherein a protrusion is provided on the side of the guide core, and two stoppers are provided on the outer side of the protrusion, and the side notches are formed between the two stoppers.

3. The key switch with function of sounding by pressing according to claim 1, wherein a notch is formed on each of two outer sides of two ends of the upper spring, so that an insertion block is formed on each of two ends of the upper spring.

4. The key switch with function of sounding by pressing according to claim 1, wherein the upper spring is disposed transversely on the side of the core, and the middle of the upper spring is located in the side notch.

5. The key switch with the function of sounding by pressing according to claim 1, wherein the first lower elastic sheet is longitudinally disposed at one end of the upper elastic sheet, and the second lower elastic sheet is longitudinally disposed at the other end of the upper elastic sheet.

6. The key switch with the function of sounding by pressing according to claim 3, wherein the first lower elastic sheet and the second lower elastic sheet are respectively provided with a socket for inserting the insertion block.

7. The key switch with the function of pressing and sounding according to claim 6, wherein the first lower spring plate and the second lower spring plate have the same structure and respectively comprise a longitudinal spring plate, a connecting spring plate connected to the upper end of the longitudinal spring plate and bent in the direction of the upper spring plate and extending downward, and a mounting plate connected to the lower end of the longitudinal spring plate and bent in the direction away from the upper spring plate and extending upward, wherein the connecting spring plate is connected with the upper end of the longitudinal spring plate through an upper arc-shaped connecting sheet at the end, and the mounting plate is connected with the lower end of the longitudinal spring plate through a lower arc-shaped connecting sheet at the end; the socket is arranged on the connecting elastic sheet.

8. The key switch with function of sounding by pressing according to claim 7, wherein the base has a mounting groove for the elastic sounding component to be inserted and moved, and a clip for the longitudinal elastic piece and the mounting piece to be inserted is formed in the mounting groove.

9. The key switch with function of sounding by pressing as claimed in claim 7, wherein at least one protrusion is protruded from the side of the longitudinal resilient plate close to the mounting plate.

10. The push button switch with function of sounding when pressed according to claim 8, wherein a flange is formed on each of two sides of the upper end of the mounting plate, and a support block for supporting the flange is formed in the position.

11. The key switch with the function of sounding by pressing according to any one of claims 1 to 10, wherein a positioning insertion column extends downward from the lower end of the guide core, and an annular recess is formed on the periphery of the positioning insertion column; a guide post is convexly arranged on the base upwards, and a guide slot for inserting the positioning insertion post is concavely arranged on the upper end surface of the guide post downwards; the elastic piece is a spring, the upper end of the spring is sleeved on the periphery of the positioning insertion column, and the lower end of the spring is sleeved on the periphery of the guide column.

12. The key switch with the function of generating sound by pressing according to claim 11, further comprising a mechanical conduction assembly inserted in the base, wherein the mechanical conduction assembly comprises a moving plate inserted in the base and a fixed plate inserted in the base and located inside the moving plate, a moving contact is disposed on a side surface of the moving plate, and a fixed contact corresponding to the moving contact is disposed on a side surface of the fixed plate; a convex hull is convexly arranged on one side of the movable sheet close to the guide core, and a pressing convex block corresponding to the convex hull is arranged on the side of the guide core.

13. The key switch with function of sounding when pressed according to claim 12, wherein the guiding slot penetrates to the lower end face of the base, and a LED light electrically connected to the PCB is disposed right under the guiding slot.

14. The key switch with the function of sounding by pressing according to claim 11, further comprising a magnetic conduction assembly, wherein the magnetic conduction assembly comprises a magnet disposed in the positioning post and a magnetic sensor disposed under the magnet, wherein an upper groove for the magnet to be embedded is disposed upward at the lower end of the positioning post, and a plurality of limiting blocks disposed at the lower end of the magnet are disposed inward on the inner wall of the upper groove.

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