CN211376474U

CN211376474U - Key switch sounding mechanism

Info

Publication number: CN211376474U
Application number: CN201922370519.XU
Authority: CN
Inventors: 吴福喜; 吕攀豪
Original assignee: Dongguan Kaihua Electronics Co Ltd
Current assignee: Dongguan Kaihua Electronics Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-28
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a key switch sound production mechanism, lead core, a piece of knocking, a mounting and an elastic component including one, lead the core through pressing and reciprocate, drive and strike piece and mounting actuation or separation to elastic potential energy by the compression of elastic component or tensile production acts on and strikes the piece, makes to strike the piece and strikes the sound production. The utility model provides a key switch sound producing mechanism, the sound production effect is good, and is longe-lived, long-term the use, the sound production effect can not reduce, promotes user experience.

Description

Key switch sounding mechanism

Technical Field

The utility model relates to a key switch especially relates to a key switch sound production mechanism.

Background

At present, a sounding key switch widely used in the market adopts a torsion spring to bounce and knock a base or an upper cover of the key switch to make a sound. However, after the spring is used for a long time, the number of times of springing of the torsion spring reaches the upper limit, so that the torsion spring is deformed and cannot be bounced any more, namely, the service life of the torsion spring is short, and the sound production effect is obviously reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide a key switch sound producing mechanism, the sound production effect is good, and is longe-lived, long-term the use, and the sound production effect can not reduce, promotes user experience.

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

a key switch sounding mechanism is characterized by comprising a guide core, a knocking part, a fixing part and an elastic part, wherein the knocking part and the fixing part are driven to attract or separate by pressing the guide core to move up and down, and elastic potential energy generated by compression or stretching of the elastic part acts on the knocking part to enable the knocking part to knock and sound.

As a further improvement of the utility model, one of the knocking piece and the fixing piece is a magnet, and the other one is a magnet adsorption piece.

As a further improvement of the present invention, the magnet is a magnet; the magnet adsorption piece is a metal substance containing any one of three components of iron, nickel and cobalt, or a non-metal substance containing any one of three components of iron, nickel and cobalt.

As a further improvement, the knocking piece is movably arranged on the guide core, and the fixing piece is arranged above the knocking piece.

As a further improvement of the utility model, a first movable cavity is formed in the guide core, and the knocking piece is movably arranged in the first movable cavity; at least one first longitudinal sliding groove is formed in the side wall of the first movable cavity, and at least one first limiting sliding block embedded into the first longitudinal sliding groove is formed on the side edge of the knocking part.

As a further improvement, the elastic member is a first spring, and the first spring is arranged in the first movable cavity in a limiting manner and is sleeved on the periphery of the knocking member.

As a further improvement of the utility model, a first upper shed has been seted up on the guide core and corresponding to first activity chamber upper end, the mounting extends to in the first upper shed.

As a further improvement of the utility model, a first lower opening for the knocking piece lower end to wear out is arranged on the guide core and corresponding to the lower end of the first movable cavity.

As a further improvement of the present invention, the fixing member is fixedly disposed on the upper cover or the base of the key switch.

As a further improvement, the knocking part mainly comprises a first knocking shaft sleeve and a first absorption body which is arranged in the first knocking shaft sleeve and protrudes upwards, the first absorption body is arranged on the periphery of the first spring sleeve, and the first spring butt is arranged on the inner wall of the upper part of the first movable cavity and between the first knocking shaft sleeve and the first movable cavity.

As a further improvement of the utility model, the mounting sets up in the piece below of strikeing.

As a further improvement, the elastic component is a second spring, the upper end of the second spring is connected to the upper cover of the key switch, and the lower end of the second spring is connected to the knocking component.

As a further improvement of the utility model, the knocking piece is movably arranged on the guide core, and the fixing piece is arranged on the base.

As a further improvement of the utility model, a second movable cavity is formed in the guide core, and the knocking piece is movably arranged in the second movable cavity; at least one second longitudinal sliding groove is formed in the side wall of the second movable cavity, and at least one second limiting sliding block embedded into the second longitudinal sliding groove is formed on the side edge of the knocking part.

As a further improvement of the utility model, a second upper opening is provided on the guide core and corresponding to the upper end of the second movable cavity for the upper end of the second spring to stretch out the upper cover connected to the key switch.

As a further improvement, the utility model is characterized in that a second lower opening for the lower end of the knocking piece to wear out is arranged on the guide core and corresponding to the lower end of the second movable cavity.

As a further improvement of the utility model, the activity of knocking part is arranged on the upper cover of the key switch, and the fixing part is arranged on the guide core.

As a further improvement of the utility model, a third movable cavity is formed in the upper cover of the key switch, and the knocking piece is movably arranged in the third movable cavity; at least one third longitudinal sliding groove is formed in the side wall of the third movable cavity, and at least one third limiting sliding block embedded into the third longitudinal sliding groove is formed on the side edge of the knocking part.

As a further improvement, the third movable cavity lower end is provided with a third lower opening for the knocking piece lower end to penetrate out.

As a further improvement, the utility model is provided with a connecting block that extends to the below of knocking piece on the guide core side, the mounting sets up on the connecting block.

As a further improvement, the knocking part mainly comprises a second knocking shaft sleeve and a second adsorption body arranged in the second knocking shaft sleeve and downwardly extending to the second knocking shaft sleeve to form a lower end face of the second knocking shaft sleeve, and the lower end of the second spring is connected to the second knocking shaft sleeve.

As a further improvement, the upper cover lower end of the key switch is convexly provided with a knocking lug which is embedded into the second spring and is positioned above the knocking piece.

The utility model has the advantages that: lead the core through the adoption, strike the piece, the mounting combines together with the elastic component, and strike one of them between piece and the mounting and be the magnet, another one adsorbs the piece for the magnet, combine magnetic field effort promptly, lead the core through pressing and reciprocate, drive and strike piece and mounting actuation or separation, and act on by the elastic potential energy that the elastic component compression or tensile produced and strike the piece, make to strike the piece and strike the sound production, long service life, the sound production effect is good, long-term use, the sound production effect can not reduce, promote user experience.

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 a schematic structural diagram of a sounding mechanism according to a first embodiment;

FIG. 2 is an exploded view of the sound generating mechanism according to the first embodiment;

fig. 3 is a schematic structural view illustrating a sounding mechanism disposed on a base of a key switch according to an embodiment of the present invention;

FIG. 4 is a schematic view of a guide core according to an embodiment;

FIG. 5 is a schematic structural view of a plexor member of an embodiment;

FIG. 6 is a cross-sectional view of the sounding mechanism disposed in the key switch according to the first embodiment;

FIG. 7 is a schematic view of a fixing element disposed on an upper cover according to an embodiment;

FIG. 8 is a schematic structural diagram illustrating a free state of the sounding mechanism according to the first embodiment;

FIG. 9 is a schematic view showing the structure of the first embodiment after pressing the guide core downward for a certain distance;

FIG. 10 is a schematic view illustrating the structure of the first embodiment after the guide core is further pressed downward;

FIG. 11 is a sectional view of the sounding mechanism disposed in the push button switch according to the second embodiment;

FIG. 12 is a schematic view of a second embodiment of a core;

FIG. 13 is a schematic structural view of a plexor member of the second embodiment;

FIG. 14 is a sectional view of a sounding mechanism provided in a push button switch according to a third embodiment;

FIG. 15 is a schematic structural view of a striking member provided on an upper cover in the third embodiment;

fig. 16 is a schematic structural view of a third embodiment of a guide core.

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 and 2, the present embodiment provides a key switch sound generating mechanism, which includes a guide core 1, a knocking element 2, a fixing element 3 and an elastic element 4, wherein the knocking element 2 and the fixing element 3 are driven to attract or separate by pressing the guide core 1 to move up and down, and elastic potential energy generated by compression or stretching of the elastic element 4 acts on the knocking element 2, so that the knocking element 2 knocks and generates sound.

In this embodiment, one of the striking element 2 and the fixing element 3 is a magnet, and the other is a magnet-attracting element. The magnet can generate a magnetic field and can attract magnetic substances, namely the magnet adsorption piece. Specifically, if the knocking piece 2 is a magnet, the fixing piece 3 is a magnet adsorption piece which can be adsorbed by the magnet; if the fixing member 3 is a magnet, the striker 2 is a magnet attracting member that can be attracted by the magnet. No matter which one of the knocking piece 2 and the fixing piece 3 is a magnet, and which one is a magnet adsorption piece, the knocking piece and the fixing piece can be separated only by the attraction of the magnetic field and the external force.

Specifically, the magnet is a magnet; the magnet adsorption piece is a metal substance containing any one of three components of iron, nickel and cobalt, or a non-metal substance containing any one of three components of iron, nickel and cobalt.

In the present embodiment, as shown in fig. 1 to 3, the striking element 2 is movably disposed on the guide core 1, and the fixing element 3 is disposed above the striking element 2. Namely, when the fixed part 3 and the knocking part 2 are attracted by the magnetic field, the knocking part 2 moves upwards to attract the fixed part 3.

Specifically, as shown in fig. 4 and 6, a first movable cavity 11 is formed in the guide core 1, and the knocking member 2 is movably disposed in the first movable cavity 11; meanwhile, at least one first longitudinal sliding groove 12 is formed on the side wall of the first movable cavity 11, and at least one first limiting slide block 21 embedded in the first longitudinal sliding groove 12 is formed on the side edge of the knocking member 2, as shown in fig. 5, preferably, the number of the first longitudinal sliding grooves 12 and the number of the first limiting slide blocks 21 are two, and the first longitudinal sliding grooves 12 and the first limiting slide blocks 21 are arranged oppositely. When the knocking part 2 moves up and down in the first movable cavity 11, the first limiting slide block 21 on the side edge of the knocking part 2 slides up and down along the first longitudinal sliding groove 12, and the first limiting slide block 21 is combined with the first longitudinal sliding groove 12 to provide vertical guiding and limiting effects for the up-and-down movement of the knocking part 2.

Specifically, as shown in fig. 6, the elastic element 4 is a first spring 4', and the first spring 4' is disposed in the first movable cavity 11 in a limited manner and is sleeved on the periphery of the knocking element 2. Specifically, the knocking part 2 mainly comprises a first knocking shaft sleeve 22 and a first adsorption body 23 which is arranged in the first knocking shaft sleeve 22 and protrudes upwards, the first spring 4 'is sleeved on the periphery of the first adsorption body 23, and the first spring 4' is abutted between the inner wall of the upper part of the first movable cavity 11 and the first knocking shaft sleeve 22. Therefore, the first spring 4 'is compressed to generate elastic potential energy because the knocking member 2 moves upwards in the first movable cavity 11, and can move downwards vertically under the pushing of the elastic potential energy of the first spring 4' after the upward moving force of the knocking member 2 disappears.

In order to facilitate the attraction between the fixing member 3 and the knocking member 2, in this embodiment, a first upper opening 13 is formed on the guide core 1 and corresponding to the upper end of the first movable cavity 11, and the fixing member 3 extends into the first upper opening 13, so that the knocking member 2 can attract the fixing member 3 after moving upwards in the first movable cavity 11.

In order to improve the knocking sound effect, the embodiment is provided with a first lower opening 14 on the guide core 1 corresponding to the lower end of the first movable cavity 11 for the lower end of the knocking element 2 to penetrate through. When the knocking piece 2 is pushed to move downwards vertically by the elastic potential energy of the first spring 4', the sound can be produced by other objects below the knocking piece 2 which penetrate through the lower end of the knocking piece 2 of the first lower opening 14.

In a specific application of the sound generating mechanism of the present embodiment, the sound generating mechanism is mounted on the base 20 of the key switch, as shown in fig. 3 and 6. The fixing member 3 is fixedly disposed on the upper cover 10 or the base 20 of the key switch, as shown in fig. 7, the fixing member 3 is fixed on the upper cover 10 of the key switch in a clamping manner, and accordingly, the fixing member 3 can be fixed on the base 20 only by lengthening the lower end of the fixing member 3. Regardless of which component the fixing member 3 is fixed to, it is sufficient that the fixing member 3 does not move with the pressing of the guide core 1 and the upper end of the fixing member 3 extends above the striker 2.

The working principle of the sounding mechanism of the embodiment is as follows:

in the free state, as shown in fig. 8, since the suction force between the fixed member 3 and the plexor member 2 is greater than the elastic force of the first spring 4', the plexor member 2 moves upward in the first movable chamber 11 until it is sucked together with the fixed member 3, and the first spring 4' is compressed.

When the guide core 1 is pressed downwards, as shown in fig. 9, the guide core 1 carries the knocking member 2 to move downwards, and the knocking member 2 is separated from the fixing member 3 with the distance between the two increasing.

When the guide core 1 is pressed downwards for a certain distance, as shown in fig. 10, when the suction force between the fixing part 3 and the knocking part 2 is smaller than the elastic potential energy generated by the first spring 4 'due to compression, the first spring 4' springs the knocking part 2 downwards, so that the first limiting slide block 21 on the side edge of the knocking part 2 knocks the bottom in the first longitudinal sliding groove 12 to generate sound. At the same time, plexor member 2 may be made long enough so that the lower end of plexor member 2 strikes base 20 to produce sound.

When the pressing of the guide core 1 is released, the guide core 1 is restored to the initial free state by the elastic restoring force of the large spring 30 between the guide core 1 and the base 20, as shown in fig. 8.

Example two:

the main differences between this embodiment and the first embodiment are: as shown in fig. 11, the fixing element 3 'is arranged below the striking element 2'. Namely, when the fixed piece 3 'and the knocking piece 2' are attracted by a magnetic field, the knocking piece 2 'moves downwards to realize the attraction with the fixed piece 3'.

Meanwhile, as shown in fig. 11, the elastic member 4 is a second spring 4 ", and the upper end of the second spring 4" is connected to the upper cover 10 of the key switch, and the lower end is connected to the striking member 2'. Specifically, as shown in fig. 13, the knocking member 2' mainly comprises a second knocking shaft sleeve 26 and a second absorption body 27 disposed in the second knocking shaft sleeve 26 and extending downward to the lower end surface of the second knocking shaft sleeve 26, and the lower end of the second spring 4 ″ is connected to the upper end of the second knocking shaft sleeve 26. Therefore, the second spring 4 "is stretched to generate elastic potential energy due to the downward movement of the knocking member 2', and can be pulled to move vertically upwards by the elastic potential energy of the second spring 4" after the downward moving force of the knocking member 2' disappears.

In this embodiment, the knocking member 2' is movably disposed on the guide core 1', and the fixing member 3' is disposed on the base 20, as shown in fig. 1. Namely, when the fixed piece 3 'and the knocking piece 2' are attracted by a magnetic field, the knocking piece 2 'moves downwards to realize the attraction with the fixed piece 3'.

Specifically, as shown in fig. 11 to 13, a second movable cavity 15 is formed in the guide core 1', and the knocking member 2' is movably disposed in the second movable cavity 15; at least one second longitudinal sliding groove 16 is formed on the side wall of the second movable cavity 15, at least one second limiting slide block 24 embedded in the second longitudinal sliding groove 16 is formed on the side edge of the knocking piece 2', and preferably, the number of the second longitudinal sliding grooves 16 and the number of the second limiting slide blocks 24 are two respectively and are arranged oppositely. When the knocking part 2' moves up and down in the second movable cavity 15, the second limiting slide block 24 on the side edge of the knocking part 2' slides up and down along the second longitudinal sliding groove 16, and the second limiting slide block 24 is combined with the second longitudinal sliding groove 16 to provide vertical guiding and limiting effects for the up-and-down movement of the knocking part 2 '.

As shown in fig. 11, a second upper opening 17 is opened on the guide core 1' corresponding to the upper end of the second movable cavity 15 for the upper end of the second spring 4 ″ to extend out and connect to the upper cover 10 of the key switch.

In order to enable the knocking member 2 'to be attracted to the fixing member 3', a second lower opening 18 through which the lower end of the knocking member 2 'passes is formed in the guide core 1' corresponding to the lower end of the second movable cavity 15. After the knocking part 2 'moves downwards to a certain height along with the guide core 1', the lower end of the knocking part 2 'can penetrate out from the second lower opening 18 to be sucked with the fixing part 3'.

In order to improve the sound effect of knocking, as shown in fig. 11, the lower end of the upper cover 10 of the key switch is provided with a knocking protrusion 101 embedded in the second spring 4 "and located above the knocking element 2' in a protruding manner. Under the pulling of the elastic potential energy of the second spring 4 ", the knocking piece 2' quickly moves upwards vertically to knock the knocking convex block 101 to generate sound.

in a free state, the distance between the knocking part 2' and the fixing part 3' is far, the knocking part 2' and the fixing part 3' are not attracted and are in a separated state, and the second spring 4' is in a natural state.

When the guide core 1' is pressed downwards, the knocking piece 2' is driven to move downwards, the second spring 4' is stretched, and the distance between the knocking piece 2' and the fixing piece 3' is smaller and smaller. When the guide core 1 'is pressed downwards to a certain distance, the distance between the knocking part 2' and the fixing part 3 'is further reduced, so that the knocking part 2' moves downwards due to the suction force generated between the knocking part 2 'and the fixing part 3', the knocking part 2 'is attracted with the fixing part 3', the second spring 4 'is further stretched, and the suction force between the knocking part 2' and the fixing part 3 'is greater than the elastic force of the second spring 4'.

When the pressing force on the guide core 1 'is released, the guide core 1' moves upwards under the elastic restoring force of the large spring 30, the knocking piece 2 'is exerted with an upward acting force, so that the knocking piece 2' is separated from the fixing piece 3', and under the action of elastic potential energy generated by the stretching of the second spring 4', the knocking piece 2 'is pulled upwards by the second spring 4 ", so that the second limiting slide block 24 on the side edge of the knocking piece 2' knocks strikes the upper wall of the second longitudinal sliding groove 16 to generate sound. Meanwhile, the upper end of the knocking piece 2' knocks the knocking convex block 101 to generate sound.

Example three:

the main differences between the present embodiment and the second embodiment are: as shown in fig. 14, the striking element 2' is movably disposed on the upper cover 10 of the push button switch, and the fixing element 3 "is disposed on the guide core 1". Specifically, as shown in fig. 16, a connecting block 19 extending to the lower side of the knocking member 2' is disposed on the side of the guide core 1 ", and the fixing member 3" is disposed on the connecting block 19. Namely, when the fixed piece 3 'and the knocking piece 2' are attracted by a magnetic field, the knocking piece 2 'moves downwards to realize the attraction with the fixed piece 3'.

As shown in fig. 14 and 15, a third movable cavity 102 is formed in the upper cover 10 of the key switch, and the striking element 2' is movably disposed in the third movable cavity 102; at least one third longitudinal sliding groove 103 is formed on the side wall of the third movable cavity 102, and at least one third limiting sliding block 25 embedded in the third longitudinal sliding groove 103 is formed on the side edge of the knocking piece 2'. Preferably, the number of the third longitudinal sliding grooves 103 and the number of the third limiting sliding blocks 25 are two, and the third longitudinal sliding grooves and the third limiting sliding blocks are arranged oppositely. When the knocking part 2' moves up and down in the third longitudinal sliding groove 103, the third limiting sliding block 25 on the side edge of the knocking part 2' slides up and down along the third longitudinal sliding groove 103, and the third limiting sliding block 25 is combined with the third longitudinal sliding groove 103 to provide vertical guiding and limiting effects for the up-and-down movement of the knocking part 2 '.

In order to enable the knocking member 2 'to be attracted to the fixing member 3 ", in this embodiment, a third lower opening 104 is formed at the lower end of the third movable cavity 102 for the lower end of the knocking member 2' to penetrate. After the knocking part 2 'moves downwards to a certain height along with the guide core 1 ", the lower end of the knocking part 2' can penetrate through the third lower opening 104 to be attracted with the fixing part 3".

in the free state, the distance between the knocking element 2 'and the fixed element 3' is relatively short, and because the suction force between the knocking element 2 'and the fixed element 3' is greater than the elastic force of the second spring 4', the knocking element 2' moves downwards in the third movable cavity 102 until being attracted together with the fixed element 3', and the second spring 4' is stretched.

When the guide core 1' is pressed downwards, the guide core 1' drives the fixing piece 3' to move downwards, so that the knocking piece 2' is separated from the fixing piece 3' and the distance between the knocking piece and the fixing piece is larger and larger, when the distance between the knocking piece and the fixing piece is larger and the suction force between the knocking piece and the fixing piece is smaller than the elastic potential energy generated by the second spring 4' due to stretching, the second spring 4' pulls the knocking piece 2' upwards, and the third limiting slide block 25 on the side edge of the knocking piece 2' knocks the upper wall of the third longitudinal sliding groove 103 to produce sound. Meanwhile, the upper end of the knocking piece 2' knocks the knocking convex block 101 to generate sound.

When the pressing of the guide core 1 "is released, the guide core 1" is restored to the initial free state by the elastic restoring force of the large spring 30 between the guide core 1 "and the base 20.

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

1. A key switch sounding mechanism is characterized by comprising a guide core, a knocking part, a fixing part and an elastic part, wherein the knocking part and the fixing part are driven to attract or separate by pressing the guide core to move up and down, and elastic potential energy generated by compression or stretching of the elastic part acts on the knocking part to enable the knocking part to knock and sound.

2. The key switch sound generating mechanism according to claim 1, wherein one of the striking member and the fixing member is a magnet, and the other is a magnet attracting member.

3. The key switch sound mechanism of claim 2, wherein the magnet is a magnet; the magnet adsorption piece is a metal substance containing any one of three components of iron, nickel and cobalt, or a non-metal substance containing any one of three components of iron, nickel and cobalt.

4. The key switch sound production mechanism of any one of claims 1 to 3, wherein the knocking member is movably disposed on the guide core, and the fixing member is disposed above the knocking member.

5. The key switch sound generating mechanism according to claim 4, wherein a first movable cavity is formed in the guide core, and the striking member is movably disposed in the first movable cavity; at least one first longitudinal sliding groove is formed in the side wall of the first movable cavity, and at least one first limiting sliding block embedded into the first longitudinal sliding groove is formed on the side edge of the knocking part.

6. The key switch sound generating mechanism according to claim 5, wherein the elastic member is a first spring, and the first spring is disposed in the first movable cavity in a limited manner and sleeved on the periphery of the knocking member.

7. The key switch sound generating mechanism according to claim 5, wherein a first upper opening is formed on the guide core corresponding to the upper end of the first movable cavity, and the fixing member extends into the first upper opening.

8. The key switch sound generating mechanism according to claim 5, wherein a first lower opening through which the lower end of the striking member passes is formed on the guide core and corresponding to the lower end of the first movable cavity.

9. The key switch sound generating mechanism according to claim 4, wherein the fixing member is fixedly disposed on the upper cover or the base of the key switch.

10. The key switch sound generating mechanism according to claim 6, wherein the knocking member is mainly composed of a first knocking shaft sleeve and a first absorption body which is arranged in the first knocking shaft sleeve and protrudes upwards, the first spring is sleeved on the periphery of the first absorption body, and the first spring is abutted between the inner wall of the upper portion of the first movable cavity and the first knocking shaft sleeve.

11. The key switch sound generating mechanism according to any one of claims 1 to 3, wherein the fixing member is disposed below the striking member.

12. The key switch sound generating mechanism according to claim 11, wherein the elastic member is a second spring, an upper end of the second spring is connected to the upper cover of the key switch, and a lower end of the second spring is connected to the striking member.

13. The key switch sound generating mechanism according to claim 12, wherein the striking member is movably disposed on the guide core, and the fixing member is disposed on the base.

14. The key switch sound generating mechanism according to claim 13, wherein a second movable cavity is formed in the guide core, and the striking member is movably disposed in the second movable cavity; at least one second longitudinal sliding groove is formed in the side wall of the second movable cavity, and at least one second limiting sliding block embedded into the second longitudinal sliding groove is formed on the side edge of the knocking part.

15. The key switch sound generating mechanism according to claim 14, wherein a second upper opening is formed on the guide core corresponding to the upper end of the second movable cavity for allowing the upper end of the second spring to extend out and connect to the upper cover of the key switch.

16. The key switch sound generating mechanism according to claim 14, wherein a second lower opening through which the lower end of the striking member passes is formed on the guide core and corresponds to the lower end of the second movable chamber.

17. The key switch sound generating mechanism according to claim 12, wherein the striking member is movably disposed on the upper cover of the key switch, and the fixing member is disposed on the guide core.

18. The key switch sound generating mechanism according to claim 17, wherein a third movable chamber is formed in the upper cover of the key switch, and the striking member is movably disposed in the third movable chamber; at least one third longitudinal sliding groove is formed in the side wall of the third movable cavity, and at least one third limiting sliding block embedded into the third longitudinal sliding groove is formed on the side edge of the knocking part.

19. The key switch sound generating mechanism according to claim 18, wherein a third lower opening through which the lower end of the striking member passes is formed at the lower end of the third movable chamber.

20. The key switch sound generating mechanism according to claim 17, wherein a connecting block is provided on the side of the core extending below the striking member, and the fixing member is provided on the connecting block.

21. The key switch sound generating mechanism according to claim 12, wherein the striking member is mainly composed of a second striking sleeve and a second absorbing body disposed in the second striking sleeve and extending downward to a lower end surface of the second striking sleeve, and a lower end of the second spring is connected to an upper end of the second striking sleeve.

22. The key switch sound mechanism according to claim 12, wherein a striking protrusion embedded in the second spring and located above the striking member is protruded from a lower end of the upper cover of the key switch.