CN210516558U

CN210516558U - Press type sound and soundless switching key switch

Info

Publication number: CN210516558U
Application number: CN201921620569.2U
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: TWM610636U

Abstract

The utility model discloses a push type sound and soundless switching key switch, which comprises a base, an upper cover, a guide core, a sounding elastic sheet, a soundless elastic sheet, a guide groove seat arranged on the base, a button with the upper part positioned in the guide groove seat, a rotating shaft positioned between the button and the guide core, and an elastic piece positioned between the guide core and the rotating shaft; the guide groove seat is mainly formed by surrounding a plurality of guide blocks, a longitudinal slide groove is formed between every two adjacent guide blocks, and a rotary guide inclined plane is formed at the upper end of each guide block; the lower end of the rotating shaft is provided with a limiting guide block embedded in the longitudinal sliding groove, and a lower guide inclined plane is formed on the lower end surface of the limiting guide block; the side edge of the button is convexly provided with a longitudinal guide sliding block embedded in the longitudinal sliding groove, and the upper end of the button is provided with an upper guide inclined plane. Through simple pressing operation, the free switching of the sound and soundless states can be realized, two different pressing effects are obtained, the operation is convenient and quick, and great convenience is brought to the use of a user.

Description

Press type sound and soundless switching key switch

Technical Field

The utility model relates to a key switch field especially relates to a press type vocal noiseless switching key switch.

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.

Most of the existing key switches 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.

Therefore, key switches capable of realizing sound and soundless switching are also available in the market, but all are toggle type key switches, and the sound and soundless switching can be realized by toggling a toggle handle leftwards and rightwards. However, no key switch for implementing the switching between sound and silence by using a push-type structure is available in the market.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a press silent switching key switch of formula sound through simple press operation, can realize freely switching over key switch's voiced state and silent state, obtains the effect of pressing down of two kinds of differences, convenient operation, swift, brings very big convenience for user's use, satisfies more demands of user.

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

a press type sound and soundless switching key switch 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 sound-producing elastic sheet and a soundless elastic sheet which are respectively arranged on the side edge of the guide core, a guide groove seat arranged on the base, a button arranged on the base and the upper part of the button is positioned in the guide groove seat, a rotating shaft arranged on the guide groove seat and positioned between the button and the guide core, and an elastic piece arranged between the guide core and the rotating shaft, wherein at least one acting arm acting on the sound-producing elastic sheet or the soundless elastic sheet is arranged on the side edge of the guide core; the guide groove seat is mainly formed by surrounding a plurality of guide blocks, a longitudinal slide groove is formed between every two adjacent guide blocks, and a rotary guide inclined plane is formed at the upper end of each guide block; the lower end of the rotating shaft is provided with a plurality of limiting guide blocks which are embedded into the longitudinal sliding grooves and are arranged in one-to-one correspondence with the longitudinal sliding grooves, and the lower end surface of each limiting guide block is provided with a lower guide inclined surface matched with the rotary guide inclined surface; the side edge of the button is convexly provided with a plurality of longitudinal guide sliding blocks which are embedded into the longitudinal sliding grooves and are arranged in one-to-one correspondence with the longitudinal sliding grooves, and a plurality of upper guide inclined planes matched with the lower guide inclined planes are formed on the edge of the upper end of the button.

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 the longitudinal guide slider is convexly arranged at the side edge of the acting part; a plurality of V-shaped grooves are formed at the edge of the upper end of the action part, and the upper guide inclined plane is formed on the inner side wall of each V-shaped groove.

As a further improvement of the utility model, the upper part of the rotating shaft is provided with an inserting column, and the lower end of the guide core is upwards provided with a guide hole for inserting the inserting column; the elastic piece is a return spring which is sleeved on the periphery of the insertion column and is positioned in the guide hole.

As a further improvement, the guide hole lower part is formed with a plurality of limit grooves which extend to the lower end surface of the guide core and are clamped by the limit strips.

As a further improvement of the utility model, a central groove is arranged in the guide groove seat, and the upper part of the button is positioned in the central groove.

As a further improvement of the utility model, the guide block is arc-shaped.

As a further improvement of the present invention, the lower end of the action arm is provided with a rubber pad acting on the sounding elastic piece or the silent elastic piece.

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.

The utility model has the advantages that: through addding the guide way seat, the button combines together with the pivot, as the rotatory piece of pressing of drive guide core, the user can drive guide core bodily rotation through simple operation of pressing to drive the arm of action and switch the position on sound production shell fragment and noiseless shell fragment, realize freely switching over the vocal state and the noiseless state of key switch from this, obtain the effect of pressing of two kinds of differences, convenient operation, swift, bring very big convenience for user's use, satisfy more demands of user.

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 present invention;

fig. 2 is a schematic view of a part of the structure of the key switch in the audio state;

fig. 3 is a cross-sectional view of the key switch of the present invention in a sound state;

FIG. 4 is a cross-sectional view of the key switch of the present invention in a silent state;

FIG. 5 is a schematic structural view of the base of the present invention;

FIG. 6 is a schematic structural view of the middle shaft of the present invention;

fig. 7 is a schematic structural diagram of the button of the present invention;

FIG. 8 is a schematic view of the structure of the present invention in which the button is combined with the shaft;

fig. 9 is a schematic structural view of the bottom of the middle guide core of the present invention;

FIG. 10 is a schematic structural view of the button disposed on the bottom of the base according to the present invention;

fig. 11 is a cross-sectional view of the sounding elastic sheet and the silent elastic sheet disposed on the base according to the present invention;

fig. 12 is a schematic structural diagram of the base 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.

Referring to fig. 1 to 4, the present embodiment provides a push-type silent switching push-button switch, which includes a base 1, an upper cover 2 disposed on the base 1, a guide core 3 disposed on the base 1, a sounding elastic sheet 4 and a silent elastic sheet 5 respectively disposed on the side of the guide core 3, a guide slot seat 6 disposed on the base 1, a button 7 disposed on the base 1 and having an upper portion located in the guide slot seat 6, a rotating shaft 8 disposed on the guide slot seat 6 and located between the button 7 and the guide core 3, and an elastic member disposed between the guide core 3 and the rotating shaft 8, wherein at least one acting arm 31 acting on the sounding elastic sheet 4 or the silent elastic sheet 5 is disposed on the side of the guide core 3.

Specifically, the guide slot seat 6 is mainly formed by enclosing a plurality of guide blocks 61, preferably, the guide blocks 61 are arc-shaped, a longitudinal sliding slot 62 is formed between every two adjacent guide blocks 61, a rotary guide inclined surface 611 is formed at the upper end of each guide block 61, and as shown in fig. 5, the longitudinal sliding slot 62 serves as a sliding way for the up-and-down movement of the button 7 and the rotating shaft 8, so as to provide a vertical guide effect for the up-and-down movement of the button 7 and the rotating shaft 8. Meanwhile, a central groove 60 is formed in the guide groove seat 6, and the upper part of the button 7 is positioned in the central groove 60.

Specifically, the lower end of the rotating shaft 8 is provided with a plurality of limiting guide blocks 81 which are embedded in the longitudinal sliding groove 62 and are arranged in one-to-one correspondence with the longitudinal sliding groove 62, and a lower guiding inclined surface 811 which is matched with the rotating guiding inclined surface 611 is formed on the lower end surface of the limiting guide block 81, as shown in fig. 6, the longitudinal sliding groove 62 serves as a sliding way for the up-and-down movement of the limiting guide block 81, so as to provide a vertical guiding effect for the up-and-down movement of the limiting guide block 81.

Specifically, a plurality of longitudinal guide sliding blocks 71 which are embedded in the longitudinal sliding grooves 62 and are arranged in one-to-one correspondence with the longitudinal sliding grooves 62 are convexly arranged on the side edge of the button 7, and a plurality of upper guide inclined surfaces 72 which are matched with the lower guide inclined surfaces 811 are formed on the upper end edge of the button 7, as shown in fig. 7 and 8, the longitudinal sliding grooves 62 serve as sliding ways for the vertical movement of the longitudinal guide sliding blocks 71, so that a vertical guide effect is provided for the vertical movement of the longitudinal guide sliding blocks 71.

Specifically, as shown in fig. 7 and 10, the button 7 mainly comprises a pressing portion 73 penetrating to the lower end surface of the base 1, and an acting portion 74 disposed at the upper end of the pressing portion 73, wherein the longitudinal guide slider 71 is convexly disposed on the side edge of the acting portion 74; a plurality of V-grooves 741 are formed at an upper end edge of the acting portion 74, and the upper guide slope 72 is formed on an inner sidewall of the V-groove 741.

Specifically, as shown in fig. 6 and 9, an insertion column 82 is disposed at the upper portion of the rotating shaft 8, a guide hole 32 for inserting the insertion column 82 is formed upward at the lower end of the guide core 3, and in the process of moving the guide core 3 up and down, the insertion column 82 provides a guiding function, so that the guide core 3 always moves in the vertical direction, thereby improving the stability and the motion accuracy of the movement of the guide core 3. In this embodiment, as shown in fig. 3, the elastic member is a return spring 9, the return spring 9 is sleeved on the periphery of the insertion post 82 and located in the guide hole 32, and the return spring 9 provides a more accurate elastic return acting force for the pressing return of the guide core 3.

As shown in fig. 6 and 9, a plurality of stopper bars 821 are protruded outside the insertion column 82, and a plurality of stopper grooves 321 that extend to the lower end surface of the guide core 3 and into which the stopper bars 821 are inserted are formed at the lower portion of the guide hole 32. Because the limiting strip 821 of the inserting column 82 is clamped in the limiting groove 321 of the guide core 3, only longitudinal relative movement can be generated between the guide core 3 and the rotating shaft 8, and relative movement cannot be generated between the guide core 3 and the rotating shaft 8 in the transverse direction, thereby ensuring that the guide core 3 can synchronously rotate when the rotating shaft 8 rotates.

As shown in fig. 2 and 9, a rubber pad 33 acting on the sounding elastic piece 4 or the silent elastic piece 5 is provided at the lower end of the acting arm 31. When the action arm 31 moves down with the guide core 3, the rubber pad 33 directly contacts the sounding elastic sheet 4 or the silent elastic sheet 5.

In order to improve the stability of the action arm 31 after the position change, as shown in fig. 2, at least one limiting elastic piece 10 for limiting the action arm 31 is disposed on the base 1, preferably, the number of the action arms 31 is 1, and correspondingly, the number of the limiting elastic pieces 10 is 2. Meanwhile, the end of the action arm 31 has an arc portion 311, and the position-limiting elastic sheet 10 has a position-limiting portion 101 matching with the arc portion 311.

As shown in fig. 2, when the key switch is in the audio state, the arc portion 311 of the acting arm 31 is clamped into the limiting portion 101 of the left limiting elastic sheet 10, and the limiting portion 101 limits the acting arm 31, so as to prevent the phenomena of transverse shaking, rotation or displacement of the guide core 3 and the acting arm 31; similarly, as shown in fig. 4, when the key switch is in a silent state, the arc portion 311 of the acting arm 31 is inserted into the limiting portion 101 of the right limiting elastic sheet 10, and the acting arm 31 is limited by the limiting portion 101, so that the phenomena of lateral shaking, rotation or displacement of the guide core 3 and the acting arm 31 are prevented, and the stability of the overall structure of the key switch is improved.

Here, when the position of the operation arm 31 is adjusted and switched, the operation arm 31 is changed by applying a force to the push button 7 by a human operator to rotate the guide core 3 by applying a force to the push button 7. Therefore, through the manpower, before the arc part 311 of the end part of the acting arm 31 enters the limiting part 101 of the limiting elastic sheet 10, acting force can be applied to the limiting elastic sheet 10, and because the limiting elastic sheet 10 has certain elasticity, the limiting elastic sheet 10 can deform, so that the arc part 311 of the end part of the acting arm 31 can smoothly change positions until the arc part 311 enters the limiting part 101 of the limiting elastic sheet 10.

As shown in fig. 2 and 5, a movable groove 11 for the guide core 3 and the acting arm 31 to move is formed on the base 1, and the sounding elastic sheet 4 and the silent elastic sheet 5 are arranged at the bottom in the movable groove 11; meanwhile, two opposite inner walls of the movable groove 11 are respectively formed with a slot 12, and two ends of the limiting elastic sheet 10 are inserted into the slots 12.

In the initial state, the upper guide slope 72 on the acting portion 74 of the push button 7 is in contact with the lower guide slope 811 on the stopper guide 81 of the rotation shaft 8. When the pressing part 73 of the button 7 is pressed upwards, the button 7 applies an upward force to the rotating shaft 8, so that the button 7 and the rotating shaft 8 move upwards along the longitudinal sliding groove 62 on the base 1 simultaneously, and simultaneously, the return spring 9 inside the guide core 3 is compressed; when the rotating shaft 8 moves up to the lower guide inclined surface 811 on the limit guide block 81 and has the same height as the rotating guide inclined surface 611 of the guide groove seat 6, the rotating shaft 8 rotates under the reaction of the elastic restoring force of the return spring 9 in the guide core 3, and the lower guide inclined surface 811 contacts the rotating guide inclined surface 611 and is guided by the rotating guide inclined surface 611 during the rotation of the rotating shaft 8, so that the lower guide inclined surface 811 rotates slidably along the rotating guide inclined surface 611; when the pressing force on the button 7 disappears, the limiting guide block 81 on the rotating shaft 8 falls into the corresponding longitudinal sliding groove 62, moves downwards and returns to the initial state, one rotation of the rotating shaft 8 is completed, and accordingly, the guide core 3 rotates along with the rotating shaft 8.

In this embodiment, preferably, as shown in fig. 5, the number of the guide blocks 61 of the guide slot seat 6 is 4, and the number of the longitudinal sliding slots 62 is 4 correspondingly. The spindle 8 rotates the guide core 3 by 90 ° each time the button 7 is pressed.

In the present embodiment, preferably, the number of the acting arms 31 is 1, and as shown in fig. 2, the change of the position of the acting arm 31 is realized, so as to realize the switching between the sound and the silence of the key switch, and each time the button 7 is pressed twice, so that the rotating shaft 8 rotates the guide core 3 twice, and rotates 180 ° in total. Of course, the number of the acting arms 31 may be 2 or 3, for example, when the number of the acting arms 31 is 2, the two acting arms 31 may be arranged at 90 °, and the number of times the button 7 is pressed at the time of switching may be changed accordingly.

In the present embodiment, the rubber pad 33 at the lower end of the action arm 31 can be selected to have the same hardness, for example, 70 degrees, regardless of whether 1 action arm 31 or two action arms 31 are selected.

In this embodiment, the button 7 is pressed to rotate the guide core 3 and the action arm 31 correspondingly, so that the position of the action arm 31 is changed, i.e. whether the action arm 31 acts on the sounding elastic piece 4 or the silent elastic piece 5 is switched. Specifically, when the acting arm 31 acts on the sounding elastic sheet 4, the pressing sounding effect can be realized, and a good pressing hand feeling can be obtained; when the action arm 31 acts on the silent elastic sheet 5, the silent pressing effect can be realized, and a certain pressing hand feeling can be obtained, so that the free switching between the sound pressing and the silent pressing can be realized, two different pressing effects can be obtained, and great convenience is brought to the use of a user

Specifically, the following two main factors are used to realize the sounding and silent pressing effects:

(1) the arching height of the upper arch 41 of the sounding elastic piece 4 is greater than the arching height of the upper arch 51 of the silent elastic piece 5, as shown in fig. 11. Specifically, the arch height of the upper arch portion 41 of the sounding elastic sheet 4 is 0.17 ± 0.03mm, and the arch height of the upper arch portion 41 of the silent elastic sheet 5 is 0.15 ± 0.03 mm.

During the process that the guide core 3 is pressed and moved downwards, the acting arm 31 directly acts on the upper arch part (41,51) of the sounding elastic sheet 4 or the silent elastic sheet 5. Whether the acting arm 31 acts on the sounding elastic piece 4 or the silent elastic piece 5, the button 7 can drive the guide core 3 to rotate for a certain angle, so that the position of the acting arm 31 is changed, and the acting arm 31 is switched between the sounding elastic piece 4 and the silent elastic piece 5.

When the action arm 31 is positioned above the upper arch part 41 of the sounding elastic sheet 4, the guide core 3 is pressed downwards, the action arm 31 moves downwards, and in the process that the action arm 31 moves downwards, the rubber pad 33 at the lower end of the action arm 31 contacts the upper arch part 41 of the sounding elastic sheet 4 and applies a downward acting force to the upper arch part 41 to change the shape of the upper arch part 41 to be concave downwards, and the concave stroke of the upper arch part 41 is longer because the arch height of the upper arch part 41 is higher; when the pressing on the guide core 3 is released, the acting force of the acting arm 31 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 rubber pad 33 at the lower end part of the acting arm 31 to generate sound, the sound pressing effect is realized, and good pressing hand feeling is obtained. At the same time, the upper arch part 41 of the sounding elastic sheet 4 is rebounded and reset, and drives the action arm 31 and the guide core 3 to reset.

When the action arm 31 is switched over the upper arch 51 of the silent elastic piece 5 by turning the guide core 3 by the push button 7, specifically, the push button 7 is pushed twice in this embodiment, and the guide core 3 is turned by 90 ° every time the push button 7 is pushed, and is rotated by 180 ° altogether. Similarly, the guide core 3 is pressed downwards, the action arm 31 moves downwards, and in the process of moving downwards of the action arm 31, the rubber pad 33 at the lower end of the action arm 31 contacts the upper arch part 51 of the silent elastic sheet 5 and applies a downward acting force to the upper arch part 51 to change the shape of the upper arch part 51 into a concave shape, and the concave stroke of the upper arch part 51 is shorter as the arch height of the upper arch part 51 is lower; when the pressing of the guide core 3 is released, the acting force of the acting arm 31 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 upper arch part 51 is sunken for a short stroke and has small elastic potential energy, when the upper arch part 51 is quickly rebounded and arched upwards to reset, the upper arch part contacts the rubber pad 33 at the lower end part of the acting arm 31 with small force, and weak sound which can not be heard by human ears is produced, thereby realizing silent pressing effect and obtaining certain pressing hand feeling. At the same time, the upper arch 51 of the silent elastic piece 5 is rebounded and reset, and drives the action arm 31 and the guide core 3 to reset.

By this means, the button 7 switches the position of the operating arm 31, so that a free switching between a sound and a silent pressing is achieved, and two different pressing effects are obtained.

(2) The drop of the contact bubble point under the sounding elastic sheet 4 is larger than that under the silent elastic sheet 5.

Specifically, as shown in fig. 12, a first contact bubble point assembly 20 is disposed below the sounding elastic sheet 4, the first contact bubble point assembly 20 mainly includes two first side contact bubble points 201 disposed on two sides of the lower portion of the sounding elastic sheet 4, and a first middle contact bubble point 202 disposed below the sounding elastic sheet 4 and located between the two first side contact bubble points 201, and specifically, the two first side contact bubble points 201 have the same height and are higher than the first middle contact bubble point 202. Meanwhile, a second contact bubble point assembly 30 is arranged below the silent elastic piece 5, the second contact bubble point assembly 30 mainly comprises two second side contact bubble points 301 arranged at two sides below the silent elastic piece 5 and a second middle contact bubble point 302 arranged below the silent elastic piece 5 and located between the two second side contact bubble points 301, and specifically, the two second side contact bubble points 301 have the same height and are higher than the second middle contact bubble point 302.

Specifically, the first contact bubble point element 20 and the second contact bubble point element 30 are both disposed on the base 1. Meanwhile, the first middle contact bubble point 202 and the second middle contact bubble point 302 are respectively composed of two semicircular bubble points with equal height, as shown in fig. 12.

As shown in fig. 11, the height difference between the first side contact bubble point 201 and the first middle contact bubble point 202 is greater than the height difference between the second side contact bubble point 301 and the second middle contact bubble point 302, that is, 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 201 and the first middle contact bubble point 202 (the contact bubble point drop below the sounding elastic sheet 4) is 0.04-0.06 mm, and the height difference between the second side contact bubble point 301 and the second middle contact bubble point 302 (the contact bubble point drop below the silent elastic sheet 5) is 0.02-0.035 mm.

When the acting arm 31 acts on the upper arch part 41 of the sounding elastic sheet 4 to make the upper arch part 41 change in shape and concave, two sides of the sounding elastic sheet 4 are supported by two first side contact bubble points 201, and the upper arch part 41 is concave until contacting with a first middle contact bubble point 202, and because the height difference between the first side contact bubble point 201 and the first middle contact bubble point 202 is large, the upper arch part 41 can be concave for a long stroke. Therefore, the elastic potential energy of the sounding elastic sheet 4 can be further increased, so that the upper arch portion 41 can be quickly rebounded and reset to hit the lower end portion of the action arm 31 to generate a larger sound, and a better pressing sounding effect can be realized.

Similarly, when the actuating arm 31 acts on the upper arch 51 of the silent elastic piece 5 to deform the upper arch 51 into a concave shape, the two sides of the silent elastic piece 5 are supported by the two second side contact bubble points 301, and the upper arch 51 is concave until contacting the second middle contact bubble point 302, and since the height difference between the second side contact bubble point 301 and the second middle contact bubble point 302 is small, the upper arch 51 can be concave for a short distance and smaller than the distance that the upper arch 41 can be concave. Therefore, the elastic potential energy of the silent elastic piece 5 is further reduced, and the hitting force of the crown portion 51 against the lower end portion of the action arm 31 is reduced, whereby the generated sound is further reduced, and the silent effect is further achieved.

Therefore, the difference in the sounding effect achieved by the action arm 31 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 201 and the first middle contact bubble point 202 is greater than the difference in height between the second side contact bubble point 301 and the second middle contact bubble point 302. Specifically, the action arm 31 makes a larger sound above the sounding elastic piece 4, and makes a weaker sound (inaudible to the human ear) above the silent elastic piece 5.

In this embodiment, the sounding elastic sheet 4 is a first metal elastic sheet, the first side contact bubble point 201 is a first conduction point a, the first middle contact bubble point 202 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 301 is a second conduction point a, the second middle contact bubble point 302 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 201 (first conduction point a), the first middle contact bubble point 202 (first conduction point B), the second side contact bubble point 301 (second conduction point a) and the second middle contact bubble point 302 (second conduction point B) are all brass with silver-plated surfaces, and the four bubble points all extend out of the base 1 to form terminals (pins) connected with the PCB. Meanwhile, the first metal elastic sheet and the second metal elastic sheet are metal dome sheets.

In this embodiment, an opening 21 is formed on the upper cover 2 for the upper end of the core 3 to pass through, so as to press the core 3.

When the guide core 3 is not pressed, the two first conduction points a are in contact 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. 3.

When the guide core 3 is pressed downwards, one of the first metal elastic sheet and the second metal elastic sheet is pressed by the acting arm 31, so that the upper arch part (41,51) is deformed and recessed due to the downward pressing, 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 3 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) and the action of the reset spring 9, 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 3 is driven to reset, so that the disconnection function of the key switch is realized.

Of course, the present embodiment can also adopt a moving and static sheet conducting structure, a light conducting structure, a magnetic conducting structure, a hall conducting structure, and the like to realize the conducting function of the key switch. 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.

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 press type sound and soundless switching key switch 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 sound-producing elastic sheet and a soundless elastic sheet which are respectively arranged on the side edge of the guide core, a guide groove seat arranged on the base, a button arranged on the base and the upper part of the button is positioned in the guide groove seat, a rotating shaft arranged on the guide groove seat and positioned between the button and the guide core, and an elastic piece arranged between the guide core and the rotating shaft, wherein at least one acting arm acting on the sound-producing elastic sheet or the soundless elastic sheet is arranged on the side edge of the guide core; the guide groove seat is mainly formed by surrounding a plurality of guide blocks, a longitudinal slide groove is formed between every two adjacent guide blocks, and a rotary guide inclined plane is formed at the upper end of each guide block; the lower end of the rotating shaft is provided with a plurality of limiting guide blocks which are embedded into the longitudinal sliding grooves and are arranged in one-to-one correspondence with the longitudinal sliding grooves, and the lower end surface of each limiting guide block is provided with a lower guide inclined surface matched with the rotary guide inclined surface; the side edge of the button is convexly provided with a plurality of longitudinal guide sliding blocks which are embedded into the longitudinal sliding grooves and are arranged in one-to-one correspondence with the longitudinal sliding grooves, and a plurality of upper guide inclined planes matched with the lower guide inclined planes are formed on the edge of the upper end of the button.

2. The push-button switch with audible and silent switching according to claim 1, wherein said push button is mainly composed of a push portion penetrating to the lower end surface of the base, and an action portion provided at the upper end of the push portion, wherein said longitudinal guide slider is protrusively provided on the side edge of the action portion; a plurality of V-shaped grooves are formed at the edge of the upper end of the action part, and the upper guide inclined plane is formed on the inner side wall of each V-shaped groove.

3. The push-button switch with sound and silence as claimed in claim 1, wherein the upper portion of the rotation shaft has a post, and a guide hole for inserting the post is upwardly formed at the lower end of the guide core; the elastic piece is a return spring which is sleeved on the periphery of the insertion column and is positioned in the guide hole.

4. The push-button switch with sound and silence according to claim 3, wherein a plurality of limiting bars are protruded outside the insertion column, and a plurality of limiting grooves extending to the lower end surface of the guide core and allowing the limiting bars to be inserted are formed at the lower part of the guide hole.

5. The push-to-talk silent switch button according to claim 1, wherein said guide groove seat has a central groove therein, and said upper button portion is located in said central groove.

6. The push-to-talk silent switch key according to claim 1, wherein said guide block is arc-shaped.

7. The push-to-talk silent switch button switch according to claim 1, wherein a rubber pad acting on the sounding dome or the silent dome is provided at the lower end of the action arm.

8. The push-to-talk silent switch button switch according to claim 1, wherein at least one stopper spring for stopping the operation arm is provided on the base.

9. The push-to-talk silent switch button switch according to claim 8, wherein said actuating arm has an arc-shaped portion at its end, and said elastic limit piece has a limit portion matching with said arc-shaped portion.

10. The push-to-talk silent switch button switch according to claim 8, wherein a movable groove for the movement of the core and the operation arm is formed in the base, and the sounding leaf spring and the silent leaf spring are disposed at the bottom of 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.