CN210516553U

CN210516553U - Key switch with sound and soundless switching function

Info

Publication number: CN210516553U
Application number: CN201921620633.7U
Authority: CN
Inventors: 吴福喜; 朱林青
Original assignee: Dongguan Kaihua Electronics Co Ltd
Current assignee: Dongguan Kaihua Electronics Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-05-12
Anticipated expiration: 2029-09-26
Also published as: TWM610634U

Abstract

The utility model discloses a key switch with sound and soundless switching function, which comprises a shell, a guide core arranged on a base, a switching piece driving the guide core to rotate and extending to the outside of the shell, a sounding elastic sheet and a soundless elastic sheet which are respectively arranged at the side edge of the guide core, a first contact bubble point component arranged below the sounding elastic sheet, and a second contact bubble point component arranged below the soundless elastic sheet, wherein the middle part of the sounding elastic sheet and the middle part of the soundless elastic sheet are both arched upwards to form an upper arch part, and at least one acting arm acting on the upper arch part is arranged at the side edge of the guide core; the height difference between the first side contact bubble point and the first middle contact bubble point is larger than that between the second side contact bubble point and the second middle contact bubble point. The utility model provides a key switch can realize that voiced and noiseless freely switches of pressing down the effect, and the user can freely switch in a flexible way according to the use needs of oneself, and the simple operation, the flexibility of product is high, satisfies user's different user demands, has brought very big convenience for user's use.

Description

Key switch with sound and soundless switching function

Technical Field

The utility model relates to a key switch field especially relates to a key switch with vocal noiseless switching function.

Background

At present, the key switches in the market are classified according to sound and silence, and can be divided into a sound key switch and a silence key switch, wherein the sound key switch can enable a user to obtain better hand feeling and sound feeling, but the sound generated by the sound key switch can make the user be noisy in certain occasions; the silent key switch does not emit sound, so that the requirement of partial users for pressing the silent key switch can be met, but the hand feeling of the silent key switch is poor. The existing key switch can only realize the function of sound or silence, and can not freely switch the sound and the silence according to the needs of users, which brings inconvenience to the users.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a key switch with voiced silent switching function can realize that voiced and silent freely switches of pressing down the effect, and the user can freely switch voiced and silent state in a flexible way according to the use needs of oneself, and the simple operation, the flexibility of product is high, satisfies user's different user demands, has brought very big convenience for user's use.

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

a key switch with sound and soundless switching function comprises a shell, which mainly comprises a base and an upper cover arranged on the base, and is characterized by also comprising a guide core arranged on the base, a switching piece driving the guide core to rotate and extending to the outside of the shell, a sound-producing elastic sheet and a soundless elastic sheet which are respectively arranged at the side edge of the guide core, a first contact bubble point component arranged below the sound-producing elastic sheet, and a second contact bubble point component arranged below the soundless elastic sheet, wherein the middle parts of the sound-producing elastic sheet and the soundless elastic sheet are both arched upwards to form an upper arch part, and the side edge of the guide core is provided with at least one acting arm acting on the upper arch part; the first contact bubble point component mainly comprises two first side contact bubble points arranged at two sides below the sounding elastic sheet and a first middle contact bubble point arranged below the sounding elastic sheet and positioned between the two first side contact bubble points; the second contact bubble point component mainly comprises two second side contact bubble points arranged at two sides below the silent elastic sheet and a second middle contact bubble point arranged below the silent elastic sheet and positioned between the two second side contact bubble points; and the height difference between the first side contact bubble point and the first middle contact bubble point is larger than that between the second side contact bubble point and the second middle contact bubble point.

As a further improvement of the utility model, the lower end of the action arm is provided with a rubber cushion positioned above the upper arch part.

As a further improvement of the present invention, the number of the action arms is two, and the first action arm acting on the upper arch portion of the sounding elastic sheet and the second action arm acting on the upper arch portion of the silent elastic sheet are provided.

As a further improvement, the hardness of the rubber mat at the lower end of the first acting arm is less than that of the rubber mat at the lower end of the second acting arm.

As a further improvement of the utility model, a right angle is formed between the first acting arm and the second acting arm.

As a further improvement of the utility model, the base is provided with at least one limiting elastic sheet for limiting the acting arm.

As a further improvement of the utility model, the end part of the action arm is provided with an arc-shaped part, and the limiting elastic sheet is provided with a limiting part matched with the arc-shaped part.

As a further improvement of the utility model, a movable groove for the guide core and the action arm to move is formed on the base, and the sounding elastic sheet and the silent elastic sheet are arranged at the bottom in the movable groove; meanwhile, two opposite inner walls of the movable groove are respectively provided with an inserting groove, and two ends of the limiting elastic sheet are inserted into the inserting grooves.

As a further improvement of the present invention, the sounding elastic sheet is a first metal elastic sheet, the first side contact bubble point is a first conduction point a, the first middle contact bubble point is a first conduction point B, and the first metal elastic sheet, the first conduction point a and the first conduction point B are combined to form a first conduction assembly; the silent elastic sheet is a second metal elastic sheet, the second side contact bubble point is a second conduction point A, the second middle contact bubble point is a second conduction point B, and the second metal elastic sheet, the second conduction point A and the second conduction point B are combined to form a second conduction assembly.

As a further improvement, the utility model also includes any one of four conducting structures of the moving and static sheet conducting structure, the light conducting structure, the magnetism conducting structure and the hall conducting structure that are switched on and off by the up-and-down movement control of the guide core.

As a further improvement of the utility model, be provided with one on the base and lead the core guide holder, should lead the core guide holder and be equipped with a guide post to the epirelief, it is formed with a first guiding hole that supplies guide post male upwards to lead the core lower extreme.

As a further improvement, the guide post is provided with a first return spring inside the first guide hole in a sleeved manner.

As a further improvement of the present invention, the switching member is a rotating member disposed at the lower end of the guide seat, and the lower end of the rotating member is exposed out of the lower end surface of the base.

As a further improvement, the guide post is convexly provided with a plurality of first limiting strips, and the lower part of the first guide hole is provided with a plurality of first limiting grooves which extend to the lower end surface of the guide core and are used for the first limiting strips to be clamped in.

As a further improvement of the utility model, the rotating part is a screw.

As a further improvement of the present invention, the switching member is a toggle block connected to the side edge of the guide core.

As a further improvement of the utility model, a strip-shaped poking hole for the poking block to wear out is arranged on the side edge of the shell.

As a further improvement of the utility model, a guide groove seat is arranged on the base, and a central groove is arranged in the guide groove seat; the switching piece is a button arranged on the base, the upper portion of the switching piece is located in the central groove, a rotating shaft located above the button is arranged on the guide groove seat, an inserting column is arranged on the upper portion of the rotating shaft, a second guide hole for inserting the inserting column is formed in the lower end of the guide core upwards, and a second reset spring located in the second guide hole is sleeved on the periphery of the inserting column.

As a further improvement, the guide groove seat is mainly formed by surrounding a plurality of arc guide blocks, and a vertical sliding groove is formed between every two adjacent arc guide blocks, and meanwhile, a rotary guide inclined plane is formed at the upper end of the arc guide block.

As a further improvement of the utility model the pivot lower extreme is provided with the spacing guide block of several in the vertical spout of embedding, and this spacing guide block sets up with vertical spout one-to-one, and the terminal surface is formed with the direction inclined plane under this spacing guide block.

As a further improvement of the present invention, the button is mainly composed of a pressing part penetrating to the lower end surface of the base and an acting part arranged at the upper end of the pressing part, wherein, a plurality of longitudinal guide sliders embedded in the longitudinal sliding grooves are convexly arranged at the side edge of the acting part, and the longitudinal guide sliders and the longitudinal sliding grooves are arranged in one-to-one correspondence; meanwhile, a plurality of V-shaped grooves are formed at the edge of the upper end of the action part, and an upper guide inclined plane matched with the lower guide inclined plane of the limiting guide block is arranged on the inner side wall of each V-shaped groove.

As a further improvement, the convex spacing strip of a plurality of second that is equipped with in the post outside is inserted the second guiding hole lower part is formed with and extends to under the guide core terminal surface and supply a plurality of second spacing grooves that the spacing strip card of second goes into.

The utility model has the advantages that:

(1) the sounding elastic sheet and the silent elastic sheet are additionally arranged in the key switch, the contact point difference below the sounding elastic sheet is larger than the contact point difference below the silent elastic sheet, and the switching piece capable of driving the guide core to rotate is additionally arranged, so that whether the acting arm on the guide core acts on the sounding elastic sheet or the silent elastic sheet can be changed through the switching piece. When the acting arm acts on the sounding elastic sheet, the sounding elastic sheet can generate larger sound when being pressed, so that the pressing sounding effect can be realized, and good pressing hand feeling can be obtained; when the acting arm acts on the silent elastic sheet, the sound generated by pressing is very weak (can not be heard by human ears), the silent pressing effect can be realized, and a certain pressing hand feeling is obtained, so that the free switching between the sound pressing and the silent pressing is realized, two different pressing effects are obtained, and great convenience is brought to the use of a user.

(2) The rubber pads with different hardness are arranged at the lower ends of the different action arms acting on the sounding elastic sheet and the silent elastic sheet, so that the rubber pads at the lower ends of the action arms acting on the sounding elastic sheet have low hardness, and the sounding is louder and more crisp when pressed; because the hardness of the rubber pad at the lower end of the acting arm acting on the silent elastic piece is high, the emitted sound is weaker and stuffer when the user presses the button, and the user can hardly hear the button. From this for the voiced pressing effect is more obvious with noiseless pressing effect difference, changes the perception and comes out, satisfies more different crowds' different demands.

(3) Through addding the switching piece that can drive the core pivoted, the switching piece can be for rotating the piece, stir the piece or press the piece, and the user can be through simple rotating, stir or press the switching piece, can switch over the vocal state and the noiseless state of key switch, convenient operation, swift, satisfies user's more demands.

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 overall exploded view of the first embodiment;

FIG. 2 is a schematic overall external structure diagram according to the first embodiment;

fig. 3 is a schematic view of a part of a structure of a key switch in a sound state according to an embodiment;

FIG. 4 is a partial schematic structural diagram of a key switch in a silent state according to an embodiment;

fig. 5 is a schematic structural view illustrating a sounding elastic piece and a silent elastic piece disposed on a base according to an embodiment of the present invention;

FIG. 6 is a schematic view of a first contact bubble point device and a second contact bubble point device disposed on a base according to an embodiment;

FIG. 7 is a schematic view of the structure of the guide core combined with the action arm according to one embodiment;

FIG. 8 is a schematic view of a guide core guide seat disposed on a base according to an embodiment;

FIG. 9 is a cross-sectional view of the pushbutton switch in an audible state according to an embodiment;

fig. 10 is a cross-sectional view of the sounding elastic piece and the silent elastic piece disposed on the base according to the embodiment;

FIG. 11 is a schematic view of a base with a rotating member disposed at a bottom thereof according to an embodiment of the present invention;

FIG. 12 is a schematic view of the overall external structure of the second embodiment;

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

FIG. 14 is an exploded view of the third embodiment;

fig. 15 is a schematic view of a part of the structure of the key switch in the third embodiment in the audio state;

FIG. 16 is a sectional view of the third embodiment in which the key switch is in the sound state;

FIG. 17 is a sectional view of the third embodiment in which the key switch is in a silent state;

FIG. 18 is a schematic structural view of a base according to a third embodiment;

FIG. 19 is a schematic structural view of a rotating shaft according to a third embodiment;

FIG. 20 is a schematic structural view of a button according to a third embodiment;

FIG. 21 is a schematic view showing a structure in which a button is coupled to a rotary shaft in accordance with a third embodiment;

FIG. 22 is a schematic structural view of a bottom of a guide core according to a third embodiment;

fig. 23 is a schematic structural view illustrating a button disposed at the bottom of a base according to a third embodiment of the present invention.

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, the present embodiment provides a key switch with a sound-and-noiseless switching function, which includes a housing 1, where the housing 1 mainly includes a base 11 and an upper cover 12 disposed on the base 11. The key switch of this embodiment further includes a guide core 2 disposed on the base 11, a switching element 3 driving the guide core 2 to rotate and extending to the outside of the housing 1, a sounding elastic sheet 4 and a silent elastic sheet 5 disposed on the side of the guide core 2, a first contact bubble point assembly 7 disposed below the sounding elastic sheet 4, and a second contact bubble point assembly 8 disposed below the silent elastic sheet 5, wherein the middle of the sounding elastic sheet 4 and the middle of the silent elastic sheet 5 are both upwardly arched to form an upper arch portion (41,51), as shown in fig. 10, the arched heights of the upper arch portion 41 and the upper arch portion 51 may be the same, or the arched height of the upper arch portion 41 is greater than the arched height of the upper arch portion 51, specifically, the arched height of the upper arch portion 41 of the sounding elastic sheet 4 is 0.17 ± 0.03mm, and the arched height of the upper arch portion 41 of the elastic sheet 5 is 0.15 ± 0.03 mm. Meanwhile, at least one acting arm 6 acting on the upper arch part (41,51) is arranged at the side edge of the guide core 2, and the acting arm 6 directly acts on the upper arch part (41,51) of the sounding elastic sheet 4 or the silent elastic sheet 5 in the process of pressing and moving down the guide core 2. For the action arm 6 acting on the sounding elastic sheet 4 or the silent elastic sheet 5, the switching piece 3 can drive the guide core 2 to rotate, so that the position of the action arm 6 is changed, and the action arm 6 is switched between the sounding elastic sheet 4 and the silent elastic sheet 5.

In this embodiment, as shown in fig. 6, the first contact bubble point assembly 7 mainly includes two first side contact bubble points 71 disposed at two sides below the sounding elastic sheet 4, and a first middle contact bubble point 72 disposed below the sounding elastic sheet 4 and located between the two first side contact bubble points 71, and specifically, the two first side contact bubble points 71 have the same height and are higher than the first middle contact bubble point 72. Meanwhile, the second contact bubble point assembly 8 mainly comprises two second side contact bubble points 81 disposed on two sides of the lower portion of the silent elastic piece 5, and a second middle contact bubble point 82 disposed between the two second side contact bubble points 81 and below the silent elastic piece 5, wherein the two second side contact bubble points 81 have the same height and are higher than the second middle contact bubble point 82.

In the present embodiment, the first contact bubble point device 7 and the second contact bubble point device 8 are both disposed on the base 11. Meanwhile, the first middle contact bubble point 72 and the second middle contact bubble point 82 are respectively composed of two semicircular bubble points with equal height, as shown in fig. 10.

As shown in fig. 10, the height difference between the first side contact bubble point 71 and the first middle contact bubble point 72 is greater than the height difference between the second side contact bubble point 81 and the second middle contact bubble point 82, i.e., the contact bubble point drop below the sound-making elastic piece 4 is greater than the contact bubble point drop below the silent elastic piece 5. Specifically, the height difference between the first side contact bubble point 71 and the first middle contact bubble point 72 (the contact bubble point drop below the sounding elastic sheet 4) is 0.04-0.06mm, and the height difference between the second side contact bubble point 81 and the second middle contact bubble point 82 (the contact bubble point drop below the silent elastic sheet 5) is 0.02-0.035 mm.

When the action arm 6 is positioned above the upper arch part 41 of the sounding elastic sheet 4, the guide core 2 is pressed downwards, the action arm 6 moves downwards, in the process that the action arm 6 moves downwards, the action arm contacts the upper arch part 41 of the sounding elastic sheet 4 and applies a downward acting force to the upper arch part 41, so that the upper arch part 41 is deformed and concave downwards, two sides of the sounding elastic sheet 4 are supported by two first side contact bubble points 71, the upper arch part 41 is concave downwards until the upper arch part is contacted with a first middle contact bubble point 72, and the height difference between the first side contact bubble point 71 and the first middle contact bubble point 72 is large, so that the upper arch part 41 can be concave downwards for a long stroke. When the pressing on the guide core 2 is released, the acting force of the acting arm 6 on the upper arch part 41 of the sounding elastic sheet 4 disappears, the upper arch part 41 of the sounding elastic sheet 4 is quickly rebounded and arched upwards to reset under the action of the elastic restoring force of the acting arm, and the upper arch part 41 is downwards sunken for a long stroke and has large elastic potential energy, so that the upper arch part 41 is enabled to be quickly rebounded and reset to hit the lower end part of the acting arm 6 to generate sound, the sound pressing effect is realized, and good pressing hand feeling is obtained. Meanwhile, the upper arch part 41 of the sounding elastic sheet 4 is rebounded and reset, and the action arm 6 and the guide core 2 are driven to reset.

When the guide core 2 is rotated by the switching member 3 to switch the action arm 6 to be above the upper arch 51 of the silent elastic piece 5, similarly, the guide core 2 is pressed downwards, the action arm 6 moves downwards along with the downward movement, the action arm 6 contacts the upper arch 51 of the silent elastic piece 5 in the downward movement process of the action arm 6 and applies downward acting force to the upper arch 51 to change the shape of the upper arch 51 to be concave, two sides of the silent elastic piece 5 are supported by two second side contact bubble points 81, the upper arch 51 is concave until the upper arch is contacted with a second middle contact bubble point 82, and the height difference between the second side contact bubble point 81 and the second middle contact bubble point 82 is small, so that the upper arch 51 can be concave for a short stroke and is smaller than the stroke that the upper arch 41 can be concave; when the pressing of the guide core 2 is released, the acting force of the acting arm 6 on the upper arch part 51 of the silent elastic piece 5 disappears, the upper arch part 51 of the silent elastic piece 5 is quickly arched upwards to reset under the action of the self elastic restoring force, and the lower end part of the acting arm 6 is contacted with small force to generate weak sound which can not be heard by human ears when the upper arch part 51 is quickly rebounded and arched upwards to reset because the upper arch part 51 is sunken for a short stroke and has small elastic potential energy, thereby realizing the silent pressing effect and obtaining certain pressing hand feeling. At the same time, the upper arch part 51 of the silent elastic sheet 5 is rebounded and reset, and drives the action arm 6 and the guide core 2 to reset.

Therefore, the difference in the sounding effect achieved by the action arm 6 switching over the sounding dome 4 and the silent dome 5 is more significant because the difference in height between the first side contact bubble point 71 and the first middle contact bubble point 72 is greater than the difference in height between the second side contact bubble point 81 and the second middle contact bubble point 82. Specifically, the action arm 6 is switched to emit a larger sound above the sounding elastic piece 4, and is switched to emit a weaker sound (inaudible to the human ear) above the silent elastic piece 5.

In this embodiment, as shown in fig. 7, a rubber pad 60 is disposed at the lower end of the action arm 6 above the upper arch portions (41,51), and when the action arm 6 moves down along with the guide core 2, the rubber pad 60 directly contacts the upper arch portions (41, 51). Specifically, the number of the acting arms 6 in the present embodiment is two, and the first acting arm 61 acts on the upper arch portion 41 of the sounding elastic piece 4 and the second acting arm 62 acts on the upper arch portion 51 of the silent elastic piece 5. The angle formed between the first acting arm 61 and the second acting arm 62 can be set according to specific needs, and can be 30 °, 60 ° or 90 °, and preferably, the angle formed between the first acting arm 61 and the second acting arm 62 is 90 °, that is, the first acting arm 61 and the second acting arm 62 form a right angle.

When the switching member 3 drives the guide core 2 to rotate to switch the positions of the first acting arm 61 and the second acting arm 62, the first acting arm 61 and the second acting arm 62 can rotate 90 degrees at each switching. As shown in fig. 3 and 9, the first acting arm 61 is located above the upper arch portion 41 of the sounding elastic sheet 4, and when the first acting arm 61 moves down along with the guide core 2, the rubber pad 60 at the lower end of the first acting arm 61 directly acts on the upper arch portion 41 to realize the pressing sounding effect, and at this time, the key switch is in a sounding state. When the first and

second operating arms

61 and 62 are rotated by 90 ° by the switch 3, as shown in fig. 4, the first operating arm 61 is rotated by 90 ° to separate from the sounding elastic piece 4, the second operating arm 62 is rotated to a position above the upper arch 51 of the silent elastic piece 5, and when the second operating arm 62 moves down along with the guide core 2, the rubber pad 60 at the lower end of the second operating arm 62 directly acts on the upper arch 51 to realize the silent pressing effect, and the push switch is in the silent state.

Meanwhile, in order to make the difference between the sound pressing effect and the soundless pressing effect more noticeable, the hardness of the rubber pad 60 at the lower end of the first acting arm 61 is smaller than that of the rubber pad 60 at the lower end of the second acting arm 62 in the present embodiment. Specifically, the hardness of the rubber pad 60 at the lower end of the first operating arm 61 is 60 degrees, and the hardness of the rubber pad 60 at the lower end of the second operating arm 62 is 78 degrees.

When the upper arch part 41 of the sounding elastic sheet 4 rebounds and hits the rubber pad 60 at the lower end of the first acting arm 61, the hardness of the rubber pad 60 at the lower end of the first acting arm 61 is low, so that the sounding sound is louder and more crisp. When the upper arch part 51 of the silent elastic piece 5 rebounds and hits the rubber pad 60 at the lower end of the second acting arm 62, the hardness of the rubber pad 60 at the lower end of the second acting arm 62 is high, so that the generated sound is weaker and more stuffy, and the sound is hardly heard by human ears. From this for the voiced pressing effect is more obvious with noiseless pressing effect difference, changes the perception and comes out, satisfies more different crowds' different demands.

In this embodiment, the position of the first acting arm 61 and the second acting arm 62 is changed by the switch 3, and in order to improve the stability after the position of the first acting arm 61 and the second acting arm 62 is changed, at least one limiting elastic sheet 9 for limiting the acting arm 6 is disposed on the base 11, as shown in fig. 3 and 4. Meanwhile, the end of the action arm 6 is provided with an arc-shaped part 63, and the limiting elastic sheet 9 is provided with a limiting part 91 matched with the arc-shaped part 63. As shown in fig. 3, when the key switch is in the audio state, the arc portion 63 of the second acting arm 62 is clamped into the limiting portion 91 of the limiting elastic sheet 9, and the limiting portion 91 limits the second acting arm 62, so as to prevent the guide core 2, the first acting arm 61 and/or the second acting arm 62 from generating lateral shaking, rotation or displacement; similarly, as shown in fig. 4, when the key switch is in a silent state, the arc-shaped portion 63 of the first acting arm 61 is clamped into the limiting portion 91 of the limiting elastic sheet 9, and the limiting portion 91 limits the first acting arm 61, thereby preventing the guide core 2, the first acting arm 61 and/or the second acting arm 62 from generating lateral shaking, rotation or displacement, and the like, and improving the stability of the overall structure of the key switch.

Here, when the first operating arm 61 and the second operating arm 62 are switched in position, the switching member 3 is manually operated to apply an urging force to the switching member 3 to rotate the guide core 2, thereby changing the positions of the first operating arm 61 and the second operating arm 62. Therefore, through the manpower, before the arc portion 63 of the end portions of the first acting arm 61 and the second acting arm 62 enters the limiting portion 91 of the limiting elastic sheet 9, acting force can be applied to the limiting elastic sheet 9, and because the limiting elastic sheet 9 has certain elasticity, the limiting elastic sheet 9 can deform, so that the arc portions 63 of the end portions of the first acting arm 61 and the second acting arm 62 smoothly change positions until the arc portions 63 enter the limiting portion 91 of the limiting elastic sheet 9.

In this embodiment, a movable groove 111 for moving the guide core 2 and the acting arm 6 is formed on the base 11, and the sounding elastic sheet 4 and the silent elastic sheet 5 are disposed at the bottom of the movable groove 111, as shown in fig. 5; meanwhile, two opposite inner walls of the movable groove 111 are respectively formed with an insertion groove 112, and two ends of the limiting elastic sheet 9 are inserted into the insertion grooves 112, as shown in fig. 3 and 4.

In this embodiment, the sounding elastic sheet 4 is a first metal elastic sheet, the first side contact bubble point 71 is a first conduction point a, the first middle contact bubble point 72 is a first conduction point B, and the first metal elastic sheet, the first conduction point a and the first conduction point B are combined to form a first conduction assembly; the silent elastic piece 5 is a second metal elastic piece, the second side contact bubble point 81 is a second conduction point a, the second middle contact bubble point 82 is a second conduction point B, and the second metal elastic piece, the second conduction point a and the second conduction point B are combined to form a second conduction assembly. Therefore, the key switch of the present embodiment is a tact switch.

Specifically, the sounding elastic piece 4 (the first metal elastic piece) and the silent elastic piece 5 (the second metal elastic piece) are both 301 stainless steel elastic pieces. The first side contact bubble point 71 (first conduction point a), the first middle contact bubble point 72 (first conduction point B), the second side contact bubble point 81 (second conduction point a) and the second middle contact bubble point 82 (second conduction point B) are all brass with silver-plated surfaces, and the four bubble points all extend out of the base 11 to form terminals (pins) connected with the PCB. Meanwhile, the first metal elastic sheet and the second metal elastic sheet are metal dome sheets.

When the guide core is not pressed, the two first conduction points A are contacted with the lower edge of the first metal elastic sheet, the first conduction point B is positioned below the upper arch part 41 of the first metal elastic sheet, and the first conduction point B is separated from the upper arch part 41 of the first metal elastic sheet; meanwhile, two second conduction points a are in contact with the lower edge of the second metal elastic sheet, a second conduction point B is located below the upper arch part 41 of the second metal elastic sheet, and the second conduction point B is separated from the upper arch part 51 of the second metal elastic sheet; at this time, the key switch is in an off-non-conductive state as shown in fig. 9.

When the guide core 2 is pressed downwards, one of the first metal elastic sheet and the second metal elastic sheet is extruded by the action arm 6, so that the upper arch part (41,51) is deformed and recessed due to downward extrusion, and is contacted with the first conduction point B (or the second conduction point B), the signal conduction function is realized, and the conduction function of the key switch is realized. When the pressing of the guide core 2 is released, the upper arch parts (41,51) rebound due to the elastic restoring force of the first metal elastic sheet (or the second metal elastic sheet), the upper arch parts (41,51) are separated from the first conduction point B (or the second conduction point B)4, and the guide core 2 is driven to reset, so that the disconnection function of the key switch is realized.

Of course, in this embodiment, any one of the four conducting structures, i.e., the moving and static sheet conducting structure, the light conducting structure, the magnetic conducting structure and the hall conducting structure, may be further adopted to implement the conducting function of the key switch. Specifically, the conduction and the disconnection are controlled by the up-and-down movement of the guide core 2. For the specific structures of the moving and static sheet conducting structure, the light conducting structure, the magnetic conducting structure and the Hall conducting structure, the conventional structural design in the field can be adopted.

Concretely, sound piece conducting structure can refer to utility model patent with application number 201721440657.5. The light conducting structure can refer to the invention patent with application number 201410536104.4. The magnetic conducting structure can be referred to the utility model patent with application number 201820231798.4. The hall conducting structure can refer to the invention patent application with the application number of 201811017870.4.

In this embodiment, as shown in fig. 8, a core guide base 113 is provided on the base 11, a guide column 1131 is protruded upward from the core guide base 113, and a first guide hole 21 into which the guide column 1131 is inserted is formed upward at the lower end of the core 2. In the process that the guide core 2 moves up and down, the guide columns 1131 provide a guide effect, so that the guide core 2 always moves in the vertical direction, and the stability and the action accuracy of the movement of the guide core 2 are improved.

Meanwhile, a first return spring 10 located in the first guide hole 21 is sleeved on the periphery of the guide column 1131. The first return spring 10 provides a more accurate elastic return force for the press return of the guide core 2.

Meanwhile, an opening 121 through which the upper end of the guide core 2 passes is formed in the upper cover 12, so as to press the guide core 2.

In the present embodiment, as shown in fig. 1 and fig. 11, the switching member 3 is a rotating member 31 disposed at the lower end of the guide core guide seat 113, and the lower end of the rotating member 31 is exposed out of the lower end surface of the base 11. Specifically, the rotating member 31 is a screw. The guide core guide seat 113, the guide core 2 and the action arm 6 can be driven to integrally rotate by manually rotating the screw, so that the position of the action arm 6 is changed, the free switching between sound and soundless pressing is realized, and two different pressing effects are obtained.

Meanwhile, as shown in fig. 7 to 9, a plurality of first limiting bars 11311 are convexly disposed on the outer side of the guide column 1131, and a plurality of first limiting grooves 211 extending to the lower end surface of the guide core 2 and into which the first limiting bars 11311 are inserted are formed at the lower portion of the first guide hole 21. Because the first limiting strip 11311 of the guiding column 1131 is clamped in the first limiting groove 211 of the guiding core 2, only the longitudinal relative movement between the guiding core 2 and the guiding core guiding seat 113 can occur, but the relative movement between the guiding core 2 and the guiding core guiding seat 113 cannot occur in the transverse direction, thereby ensuring that the guiding core 2 can also synchronously rotate when the guiding core guiding seat 113 is rotated.

Example two:

as shown in fig. 12 and fig. 13, the main differences between the present embodiment and the first embodiment are: the switching piece 3 is a toggle block 32 connected to the side of the guide core 2. Meanwhile, a strip-shaped toggle opening 13 for the toggle block 32 to penetrate out is formed in the side edge of the shell 1.

Through the manual stirring of the stirring block 32, the stirring block 32 moves in the strip stirring opening 13, and the guide core 2 can be driven to rotate by a certain angle, such as 30 degrees, 60 degrees or 90 degrees, so that the position of the action arm 6 is changed, the free switching between sound pressing and silent pressing is realized, and two different pressing effects are obtained.

Example three:

the main difference between this embodiment and the first or second embodiment is: the switching piece 3 is a pressing piece.

The specific structural design is as follows:

as shown in fig. 14 to 18, a guide groove seat 114 is provided on the base 11, and a central groove 1140 is provided in the guide groove seat 114; the switching member 3 is a button 33 disposed on the base 11 and having an upper portion located in the central groove 1140, a rotating shaft 20 disposed above the button 33 is disposed on the guide groove seat 114, an insertion column 201 is disposed on the upper portion of the rotating shaft 20, a second guide hole 22 for inserting the insertion column 201 is upwardly formed at the lower end of the guide core 2, and in the process of moving the guide core 2 up and down, the insertion column 201 provides a guiding effect, so that the guide core 2 always moves in the vertical direction, thereby improving the stability and the motion accuracy of the movement of the guide core 2. Meanwhile, a second return spring 30 located in the second guide hole 22 is sleeved on the periphery of the insert column 201, and the second return spring 30 provides more accurate elastic return acting force for the pressing return of the guide core 2.

Specifically, as shown in fig. 18, the guide slot seat 114 is mainly defined by a plurality of arc-shaped guide blocks 1141, a longitudinal slide slot 1142 is formed between every two adjacent arc-shaped guide blocks 1141, and the longitudinal slide slot 1142 is used as a slide way for the up-and-down movement of the button 33 and the rotating shaft 20, so as to provide a vertical guide effect for the up-and-down movement of the button 33 and the rotating shaft 20; meanwhile, a rotary guide slope 11411 is formed at an upper end of the arc guide block 1141.

Specifically, as shown in fig. 15 and fig. 19, a plurality of limiting guide blocks 202 embedded in the longitudinal sliding groove 1142 are arranged at the lower end of the rotating shaft 20, the limiting guide blocks 202 are arranged in one-to-one correspondence with the longitudinal sliding groove 1142, and the longitudinal sliding groove 1142 serves as a sliding way for the limiting guide blocks 202 to move up and down, so as to provide a vertical guiding function for the up and down movement of the limiting guide blocks 202; and a lower guide slope 2021 is formed on the lower end surface of the limit guide block 202.

Specifically, as shown in fig. 15, 20 and 23, the button 33 mainly comprises a pressing portion 331 penetrating to the lower end surface of the base 11, and an acting portion 332 disposed at the upper end of the pressing portion 331, wherein a plurality of longitudinal guide sliders 3321 embedded in the longitudinal sliding slots 1142 are convexly disposed on the side edge of the acting portion 332, the longitudinal guide sliders 3321 and the longitudinal sliding slots 1142 are disposed in one-to-one correspondence, and the longitudinal sliding slots 1142 serve as a sliding channel for the vertical movement of the longitudinal guide sliders 3321, so as to provide a vertical guide effect for the vertical movement of the longitudinal guide sliders 3321; meanwhile, a plurality of V-shaped grooves 3322 are formed on the upper edge of the action portion 332, and an upper guide inclined surface 33221 matching with the lower guide inclined surface 2021 of the position limiting guide block 202 is formed on the inner side wall of the V-shaped groove 3322, as shown in fig. 21.

As shown in fig. 19 and 22, a plurality of second limiting bars 2011 are convexly disposed on the outer side of the insertion column 201, and a plurality of second limiting grooves 2012 extending to the lower end surface of the guide core 2 and into which the second limiting bars 2011 are inserted are formed at the lower portion of the second guiding holes 2011. Because the second limit strip 2011 of the plug 201 is clamped into the second limit groove 2012 of the guide core 2, only longitudinal relative movement can be generated between the guide core 2 and the rotating shaft 20, and relative movement cannot be generated between the guide core 2 and the rotating shaft 20 in the transverse direction, so that synchronous rotation of the guide core 2 can be ensured when the rotating shaft 20 rotates.

In the initial state, the upper guide slope 33221 of the acting portion 332 of the button 33 contacts the lower guide slope 2021 of the stopper guide 202 of the rotation shaft 20. When the pressing portion 331 of the button 33 is pressed upward, the button 33 applies an upward force to the rotary shaft 20, so that the button 33 moves upward along the longitudinal sliding groove 1142 on the base 11 simultaneously with the rotary shaft 20, and at the same time, the second return spring 30 inside the guide core 2 is compressed; when the rotating shaft 20 moves up to the lower guiding inclined surface 2021 of the position-limiting guide block 202 and the rotating guiding inclined surface 11411 of the guide slot seat 114 are at the same height, the rotating shaft 20 generates a rotating action under the reaction of the elastic restoring force of the second return spring 30 in the guide core 2, and during the rotation of the rotating shaft 20, the lower guiding inclined surface 2021 contacts with the rotating guiding inclined surface 11411 and is guided by the rotating guiding inclined surface 11411, so that the lower guiding inclined surface 2021 slides and rotates along the rotating guiding inclined surface 11411; when the pressing force on the button 33 disappears, the limiting guide block 202 on the rotating shaft 20 falls into the corresponding longitudinal sliding groove 1142, moves downwards to return to the initial state, completes one rotation of the rotating shaft 20, and accordingly, the guide core 2 rotates along with the rotating shaft 20.

In this embodiment, it is preferable that the number of the arc-shaped guide blocks 1141 of the guide slot housing 114 is 4, and the number of the longitudinal sliding slots 1142 is 4 correspondingly. The spindle 20 rotates the guide core 2 by 90 ° each time the button 33 is pressed.

In this embodiment, it is preferable that the number of the acting arms 6 is 1, and as shown in fig. 15, the change of the position of the acting arm 6 is realized, so as to realize the switching between the sound and the silence of the key switch, and each time the button 33 is pressed twice, so that the rotating shaft 20 rotates the guide core 2 twice, and rotates 180 ° in total. Of course, the number of the action arms 6 may be 2 or 3, for example, when the number of the action arms 6 is 2, the two action arms 6 may be arranged at 90 °, and the number of times the button 33 is pressed at the time of switching may be changed accordingly.

In the present embodiment, the rubber pad 60 at the lower end of the action arm 6 can be selected to have the same hardness, for example, 70 degrees, regardless of whether 1 action arm 6 or two action arms 6 are selected.

Therefore, the key switch of the embodiment realizes the switching of sound and silence, and the main factors of the influence are as follows: (1) the arching height of the upper arching part of the sounding elastic sheet is greater than that of the upper arching part of the silent elastic sheet; (2) the difference of the contact bubble points below the sounding elastic sheet is greater than that below the silent elastic sheet, specifically, the difference of the contact bubble points below the sounding elastic sheet is 0.04-0.06mm, and the difference of the contact bubble points below the silent elastic sheet is 0.02-0.035 mm.

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 with sound and soundless switching function comprises a shell, which mainly comprises a base and an upper cover arranged on the base, and is characterized by also comprising a guide core arranged on the base, a switching piece driving the guide core to rotate and extending to the outside of the shell, a sound-producing elastic sheet and a soundless elastic sheet which are respectively arranged at the side edge of the guide core, a first contact bubble point component arranged below the sound-producing elastic sheet, and a second contact bubble point component arranged below the soundless elastic sheet, wherein the middle parts of the sound-producing elastic sheet and the soundless elastic sheet are both arched upwards to form an upper arch part, and the side edge of the guide core is provided with at least one acting arm acting on the upper arch part; the first contact bubble point component mainly comprises two first side contact bubble points arranged at two sides below the sounding elastic sheet and a first middle contact bubble point arranged below the sounding elastic sheet and positioned between the two first side contact bubble points; the second contact bubble point component mainly comprises two second side contact bubble points arranged at two sides below the silent elastic sheet and a second middle contact bubble point arranged below the silent elastic sheet and positioned between the two second side contact bubble points; and the height difference between the first side contact bubble point and the first middle contact bubble point is larger than that between the second side contact bubble point and the second middle contact bubble point.

2. The push switch with an audible and silent switching function as claimed in claim 1, wherein a rubber pad is provided above the upper dome at the lower end of said operating arm.

3. The push switch with an audible and silent switching function according to claim 2, wherein the number of said operating arms is two, and said two operating arms are a first operating arm that operates on the upper dome of the sounding dome and a second operating arm that operates on the upper dome of the silent dome.

4. The key switch with an audible and silent switching function as claimed in claim 3, wherein the hardness of the rubber pad at the lower end of the first actuation arm is smaller than that of the rubber pad at the lower end of the second actuation arm.

5. The key switch with an audible and silent switching function according to claim 3, wherein said first and second operation arms are at right angles.

6. The key switch with the function of switching between active and inactive sound according to claim 1, wherein at least one position-limiting elastic piece for limiting the action arm is provided on the base.

7. The push switch with an audible and silent switching function as claimed in claim 6, wherein said actuating arm has an arcuate portion at its end, and said elastic limit piece has a limit portion matching said arcuate portion.

8. The key switch with the function of switching between sound and silence according to claim 6, wherein a movable groove for the movement of the guide core and the action arm is formed on the base, and the sounding elastic piece and the silent elastic piece are arranged at the bottom in the movable groove; meanwhile, two opposite inner walls of the movable groove are respectively provided with an inserting groove, and two ends of the limiting elastic sheet are inserted into the inserting grooves.

9. The key switch with the function of switching between sound and silence according to claim 1, wherein the sound-producing dome is a first metal dome, the first side contact bubble point is a first conduction point a, the first middle contact bubble point is a first conduction point B, and the first metal dome, the first conduction point a and the first conduction point B are combined to form a first conduction assembly; the silent elastic sheet is a second metal elastic sheet, the second side contact bubble point is a second conduction point A, the second middle contact bubble point is a second conduction point B, and the second metal elastic sheet, the second conduction point A and the second conduction point B are combined to form a second conduction assembly.

10. The key switch with the function of switching between sound and silence according to claim 1, further comprising any one of four conducting structures of a moving and static sheet conducting structure, a light conducting structure, a magnetic conducting structure and a hall conducting structure, which are controlled to be conducted and disconnected by the up and down movement of the guide core.

11. The push switch with audible and silent switching function as claimed in any one of claims 1 to 10, wherein a guide core guide seat is provided on said base, said guide core guide seat having a guide post projected upward, said guide core having a first guide hole formed upward at a lower end thereof for insertion of said guide post.

12. The key switch with an audio and silent switching function as claimed in claim 11, wherein a first return spring is disposed in the first guide hole and around the guide post.

13. The key switch with the function of switching between sound and silence according to claim 11, wherein a plurality of first position-limiting strips are protruded outside the guide post, and a plurality of first position-limiting grooves are formed at the lower part of the first guide hole, extending to the lower end surface of the guide core, for the first position-limiting strips to be inserted into.

14. The key switch of claim 13, wherein the switch member is a rotating member disposed at the lower end of the guide core guide, and the lower end of the rotating member is exposed from the lower end surface of the base.

15. The key switch with an audible and silent switching function according to claim 14, wherein said rotating member is a screw.

16. The key switch with the switching function of soundless and audible according to any of claims 1 to 10, wherein the switching member is a toggle block attached to the side of the guide core.

17. The key switch with the function of switching between sound and silence according to claim 16, wherein a bar-shaped toggle opening for the toggle block to pass through is formed on the side of the housing.

18. The key switch with the switching function of soundless and audible according to any of the claims 1 to 10, wherein a guide groove seat having a central groove therein is provided on the base; the switching piece is a button arranged on the base, the upper portion of the switching piece is located in the central groove, a rotating shaft located above the button is arranged on the guide groove seat, an inserting column is arranged on the upper portion of the rotating shaft, a second guide hole for inserting the inserting column is formed in the lower end of the guide core upwards, and a second reset spring located in the second guide hole is sleeved on the periphery of the inserting column.

19. The key switch of claim 18, wherein the guide groove seat is formed by surrounding a plurality of arc-shaped guide blocks, and a longitudinal sliding groove is formed between every two adjacent arc-shaped guide blocks, and a rotary guide slope is formed at an upper end of the arc-shaped guide block.

20. The key switch with sound and silence switching function as claimed in claim 19, wherein a plurality of position-limiting guide blocks embedded in the longitudinal sliding grooves are provided at the lower end of the rotating shaft, the position-limiting guide blocks are provided in one-to-one correspondence with the longitudinal sliding grooves, and a lower guide slope is formed at the lower end surface of the position-limiting guide block.

21. The key switch with an audible and silent switching function as claimed in claim 20, wherein said push button is mainly composed of a pressing portion penetrating to the lower end surface of the base, and an acting portion disposed at the upper end of the pressing portion, wherein a plurality of longitudinal guide sliders embedded in the longitudinal slide grooves are protrudingly disposed at the side edge of the acting portion, the longitudinal guide sliders being disposed in one-to-one correspondence with the longitudinal slide grooves; meanwhile, a plurality of V-shaped grooves are formed at the edge of the upper end of the action part, and an upper guide inclined plane matched with the lower guide inclined plane of the limiting guide block is arranged on the inner side wall of each V-shaped groove.

22. The key switch with the function of switching between sound and silence according to claim 18, wherein a plurality of second limiting bars are protruded outside the insertion posts, and a plurality of second limiting grooves extending to the lower end surface of the guide core and into which the second limiting bars are inserted are formed at the lower part of the second guide holes.