CN211700095U - High balance structure key switch - Google Patents

Abstract

The utility model provides a high balanced structure key switch relates to key switch technical field, and the main objective is the technical problem who solves the button assembly inefficiency that exists among the prior art. The sounding keyboard switch capable of being pressed downwards in a balanced mode comprises a base, an upper cover and an elastic component, wherein the periphery of the base extends towards the direction of the upper cover and forms at least two guide grooves with closed top ends, the periphery of the upper cover extends downwards at the positions corresponding to the guide grooves to form balancing feet, the balancing feet are matched with the guide grooves and can slide up and down along the guide grooves, and the upper cover and the base are buckled with each other under the action of the guide grooves and the balancing feet; the elastic component is fixedly arranged between the base and the upper cover and provides a supporting force for the upper cover to be far away from the base. At the moment, the switch structure can realize the up-and-down sliding of the upper cover under the condition of lacking the button part, so that other components are driven to move to control the on-off of the switch.

Description

High balance structure key switch

Technical Field

The utility model belongs to the technical field of the key switch technique and specifically relates to a high balanced structure key switch is related to.

Background

Computers have been an indispensable tool in modern people's work and life. The keyboard is one of the most important input devices of the computer, whether a notebook computer or a desktop computer, so the use experience of the computer is directly determined by the quality of the keyboard switch. The keyboard switch not only ensures good hand feeling and long service life, but also requires that the keys are not blocked or inclined in the using process, and needs to have better stability.

The existing commonly used keyboard is mainly pressed downwards by a button to control the on-off of the switch, at the moment, the key switch at least comprises an upper cover, a base and the button, once the button structure is damaged or clamped, the keyboard can be in failure, and meanwhile, the production cost and the assembly efficiency of the key structure can be influenced by relatively more components.

In view of the above, it is desirable to develop a keyboard key that can be applied to both a notebook computer and a computer, and the key switch has the advantages of reducing the processing cost, improving the assembly efficiency, and ensuring high balance of the key.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high balanced structure key switch to solve the technical problem that the button assembly efficiency that exists is low among the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a high-balance structure key switch, which comprises a base, an upper cover and an elastic component,

the periphery of the base extends towards the direction of the upper cover and forms at least two guide grooves with closed top ends, the periphery of the upper cover extends downwards to form a balance pin corresponding to the guide grooves, the balance pin and the guide grooves are matched with each other and can slide up and down along the guide grooves, and the upper cover and the base are buckled with each other under the action of the guide grooves and the balance pin; the elastic component is fixedly arranged between the base and the upper cover and provides a supporting force for the upper cover to be far away from the base.

Because the balance feet on the upper cover can slide up and down along the guide grooves on the base, and the upper ends of the guide grooves are closed, the upper cover can slide up and down relative to the base under the supporting action of the elastic component. At the moment, the switch structure can realize the up-and-down sliding of the upper cover under the condition of lacking the button part, so that other components are driven to move to control the on-off of the switch.

In the above technical solution, preferably, the guide grooves are distributed at least on two opposite sides of the base.

In order to ensure that the key structure can have better balance when in use and the upper cover can not incline left and right, the guide grooves are arranged and at least distributed on the two opposite sides of the base, so that the two sides of the upper cover can slide along the guide grooves simultaneously when the upper cover is pressed.

In the above technical solution, preferably, the guide groove is a strip-shaped hole structure, or the guide groove is a strip-shaped structure with a recessed outer side wall or a recessed inner side wall.

In the above technical solution, preferably, the lower end of the balance foot extends along the horizontal direction and forms a hook, and the hook can extend into the guide groove.

In order to ensure the stability of connection between the upper cover and the base and avoid the upper cover from falling off from the base, the lower end of the balance foot is arranged to extend towards the outer side or the inner side of the upper cover along the horizontal direction to form a hook, and the hook can just stretch into the guide groove. Therefore, the guide groove only needs to be provided for the hook to stretch into, and whether the through hole does not influence the use of the hook.

In the above technical solution, preferably, the key switch further includes a large balance bracket and a small balance bracket, the large balance bracket and the small balance bracket are mutually crossed to form a scissor-leg structure, and the scissor-leg structure is respectively connected to the upper cover and the base.

Because the four supporting points in the scissor leg structure are respectively positioned at the four corners of the upper cover, the key structure can be more stable when in use, a user can press any point on the upper cover to enable the upper cover to move downwards, the phenomenon of uneven pressure or key clamping can not occur, and the stability and the hand feeling of the key switch when in use can be further improved; in addition, compared with the traditional key structure, the scissor structure can effectively reduce the key stroke of the keyboard, and is more suitable for notebook computer equipment.

In the above technical solution, preferably, the key switch further includes a movable spring plate located on the upper surface of the base, the movable spring plate is of an axisymmetric structure and includes two action portions with the same size and arranged oppositely and a blocking piece connecting the two action portions, one end of the action portion is connected with the blocking piece, and the other end is bent and extends upwards to form a convex point; the upper cover is provided with a lug matched with the action part at the position corresponding to the movable elastic sheet, and the distance between the two oppositely arranged salient points is smaller than the maximum width of the lug; when the upper cover is pressed, the convex block extrudes the convex point and moves downwards relative to the convex point, so that the movable elastic sheet deforms and moves upwards.

The upper surface of the base forms a structure for containing the movable elastic sheet, the movable elastic sheet is positioned in the structure, and the lower surface of the upper cover positioned above the structure extends downwards to form a lug structure; when the upper cover is pressed, the convex block also moves downwards and interacts with the action part of the movable elastic sheet and extrudes the convex point of the action part, and the movable elastic sheet is extruded to generate deformation and move upwards.

In the above technical solution, preferably, the cross section of the bump is a bilateral symmetry quadrilateral structure, and the width of the middle part of the bump is greater than the widths of the upper end and the lower end, so that the bump can conveniently move up and down relative to the bump.

In the above technical solution, preferably, the side wall of the large balance bracket extends outward to form an impact column, the impact column is located above the movable elastic sheet, and when the movable elastic sheet moves upward relative to the base under the squeezing action of the bump, the movable elastic sheet can strike the impact column and make a sound.

In the above technical scheme, preferably, the middle part of the upper surface of the base extends upwards to form a support column, the lower surface of the upper cover extends downwards to form a hollow structure which can be mutually inserted with the support column, and the elastic component is sleeved outside the hollow structure.

In the above technical solution, preferably, the elastic member is a spring.

In the above technical solution, preferably, the spring is inserted in the middle of the scissor-leg structure. The scissors foot structure can play limiting role to the spring at this moment.

In the above technical scheme, preferably, the key switch further includes a conduction device for realizing signal output, the conduction device is a metal sleeve and infrared pair tubes, a baffle extending downward is arranged on a side portion of the upper cover, the metal sleeve is sleeved on the baffle from bottom to top, and when the upper cover moves downward, the metal sleeve moves downward along with the upper cover to a position between the infrared pair tubes to control on and off of the switch.

In the above technical scheme, preferably, the upper surface of the upper cover is further provided with at least two fastening holes, and the keycap is fixedly connected with the upper cover through the fastening holes.

Compared with the prior art, the utility model provides a high-balance structure key switch, which combines the upper cover and the button together, and the on-off of the switch can be controlled by pressing the upper cover; meanwhile, in order to ensure the balance of the up-and-down movement of the upper cover, the upper cover is connected with the base through the guide grooves and the balance feet, the number of the balance feet and the guide grooves is four, and hooks for ensuring firm connection are further designed on the balance feet; a scissor leg structure which is used for maintaining the balance of the upper cover is also arranged in a cavity formed by enclosing the upper cover and the base; in addition, still design on the big balanced support in the scissors foot structure and have the striking post, the shell fragment moves down at the upper cover when striking the sound with the striking post, makes this key switch have better vocal effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the high balance structure key switch of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of the upper cover of FIG. 1;

FIG. 5 is a schematic view of the upper cover of FIG. 1 at another angle;

FIG. 6A is a schematic view of the structure of the balance foot in the upper cover;

FIG. 6B is another structural schematic view of the balance foot in the upper cover;

FIG. 7 is a schematic structural view of the base of FIG. 1;

fig. 8 is a schematic structural view of the dynamic elastic sheet in fig. 1;

fig. 9 is an assembly schematic diagram of the high balance structure key switch of the present invention;

fig. 10 is an exploded view of the high-balance structure key switch of the present invention;

FIG. 11 is a schematic view of the bottom surface of the push switch of FIG. 10;

fig. 12-13 are schematic diagrams of the application of the high balance structure key switch of the present invention;

in the figure: 1. a base; 11. a guide groove; 12. a support pillar; 2. an upper cover; 21. a balance foot; 22. a bump; 23. a hollow structure; 24. a baffle plate; 25. a snap-in hole; 3. an elastic component; 4. a large balance support; 41. an impact post; 5. a small balance support; 6. a movable spring plate; 61. an operation section; 611. salient points; 62. a baffle plate; 7. a metal sheath; 8. infrared pair of tubes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Fig. 1 is a schematic diagram of the overall structure of the high-balance structure key switch of the present invention; this key switch wholly covers each other by upper cover and base and closes and form, compares with traditional key switch, does not set up the button on the device, and the upper cover can reciprocate for the base through mutually supporting of balanced foot and guide slot, and one side middle part downwardly extending of upper cover forms a baffle, and when the upper cover atress moves down, the metal covering also moves down thereupon to between the infrared geminate transistor with the control switch break-make.

FIG. 2 is an exploded view of FIG. 1; it can be seen that the key switch sequentially comprises an upper cover, a metal sleeve, an elastic component, a movable elastic sheet, a small balance support, a large balance support and a base from top to bottom.

FIG. 3 is a schematic cross-sectional view of FIG. 1; the figure is a screenshot of the upper cover under the condition that the upper cover is not stressed, at the moment, the upper cover and the base are enclosed into a cavity under the action of the guide groove and the balance feet, the elastic assembly, the small balance support, the large balance support and the movable elastic sheet are all positioned in the cavity, a lug extending out of the lower surface of the upper cover is just positioned right above the movable elastic sheet, and the impact column positioned on the side part of the large balance support is positioned above the boss of the movable elastic sheet.

FIG. 4 is a schematic structural view of the upper cover of FIG. 1; the structure of the upper surface and the side part of the upper cover can be clearly seen from the figure, the side part of the upper cover is provided with a balance pin used for being connected with the base and a baffle plate fixed with a metal sleeve, and the upper surface of the upper cover is provided with a buckling hole used for being connected with the keycap.

FIG. 5 is a schematic view of the upper cover of FIG. 1 at another angle; the lower surface structure of the upper cover can be clearly seen at the angle, the middle part of the upper cover extends downwards to form a hollow structure, the two opposite sides outside the hollow structure are respectively provided with a lug and a baffle, the peripheries of the two sides are provided with balance feet, and a fixing device used for fixing a large balance support and a small balance support is designed between the balance feet and the hollow structure.

FIG. 6A is a schematic view of the balance foot in the upper cover; the hook at the lower end of the balance foot relatively extends towards the outer side direction of the upper cover so as to realize the effect of connecting with the base.

FIG. 6B is another schematic view of the balance foot in the upper cover; compared with fig. 6A, when the upper cover is connected with the base, the balance foot is positioned outside the guide groove, and the hook positioned at the lower end of the balance foot extends towards the inner side of the upper cover and is connected with the guide groove.

FIG. 7 is a schematic structural view of the base of FIG. 1; the middle part of base upwards extends and forms a support column, and the both sides relative with balanced foot are provided with the guide slot, and in addition, the upper surface of base still is provided with the fixing device who is used for fixed big balanced support, little balanced support and movable elastic sheet.

Fig. 8 is a schematic structural view of the dynamic elastic sheet in fig. 1; this movable elastic sheet includes the action portion that two symmetries set up and the separation blade that couples together two action portions: the separation blade is platelike structure, and action portion one end links to each other with the separation blade, and the other end is bent and upwards extends and forms a bump, and action portion wholly is Z shape structure, and the bump is located the corner of upper end, and two bumps set up relatively and the distance between two bumps is less than the maximum thickness of upper cover lug.

Fig. 9 is an assembly schematic diagram of the high balance structure key switch of the present invention; the large balance support, the small balance support and the movable elastic sheet are sequentially assembled at corresponding positions of the base (the elastic component is not shown in the figure), and the upper cover is covered on the base through the balance feet.

FIG. 10 is an exploded view of the high-balance structure key switch of the present invention; when in actual use, the upper part of the key switch is required to be provided with a keycap, the lower end of the key switch is provided with an iron plate for fixing the key switch and a PCB for connecting a circuit in sequence, and the infrared pair tubes are fixedly arranged on the PCB.

FIG. 11 is a schematic view of the bottom surface of the push switch of FIG. 10; the position relation between the metal sleeve and the infrared pair transistors can be clearly seen in the figure, and when the baffle plate moves downwards along with the upper cover, the metal sleeve moves to a position between the infrared pair transistors to trigger the conduction function of the key switch; when the metal sleeve moves upwards along with the upper cover, the infrared transmission between the infrared pair tubes is recovered, and the on function of the keyboard switch is switched off.

Fig. 12-13 are schematic views of the application of the high balance structure key switch of the present invention; fig. 12 is a schematic structural diagram of a notebook computer using the high balance structure key switch, and fig. 13 is a schematic structural diagram of a conventional keyboard using the high balance structure key switch.

As shown in fig. 1-13, the utility model provides a high balanced structure key switch, including base 1, upper cover 2 and elastic component 3, its overall structure is as shown in fig. 1, the week side of base 1 is towards upper cover 2 direction extension and is formed two at least top confined guide slots 11, as shown in fig. 7, week side of upper cover 2 and the corresponding downwardly extending of guide slot 11 form balanced foot 21, as shown in fig. 4, thereby balanced foot 21 mutually supports with guide slot 11 and makes upper cover 2 and base 1 lock each other, upper cover 2 can also slide from top to bottom for base 1 along guide slot 11 this moment, still be provided with an elastic component 3 between upper cover 2 and the base 1, this elastic component 3 can provide an ascending power for upper cover 2. Therefore, the upper cover 2 can move up and down relative to the base 1 under the action of the elastic component 3, namely, the on-off of the key switch can be triggered by pressing the upper cover 2. Since the balance feet 21 of the upper cover 2 can slide up and down along the guide grooves 11 of the base 1 and the upper ends of the guide grooves 11 are closed, the upper cover 2 can slide up and down relative to the base 1 under the supporting action of the elastic assemblies 3. At the moment, the switch structure can still drive other components to move through the up-and-down sliding of the upper cover 2 to realize the pressing of the key under the condition of removing the button structure, so that the on-off of the switch is controlled.

Specifically, in order to guarantee that there is better equilibrium between upper cover 2 and the base 1, the phenomenon of uneven pressure or card key can not appear, set up guide slot 11 and distribute at least on two relative lateral walls of base 1, also can distribute on three or even four lateral walls, each lateral wall is provided with a guide slot 11 at least, can guarantee that the both sides of upper cover 2 can slide along guide slot 11 simultaneously when pressing upper cover 2 like this, avoid the card key.

As can be clearly seen in fig. 1, the number of the guide grooves 11 in the present embodiment is four, and four guide grooves 11 are distributed two by two on two opposite side walls of the base 1. The balance feet 21 are connected with the guide grooves 11, so that the upper cover 2 and the base 1 can be firmly buckled, and meanwhile, the upper cover 2 can be ensured to float upwards to the same height everywhere.

In order to guarantee to firmly be connected between upper cover 2 and the base 1, avoid upper cover 2 to drop from base 1, set up guide slot 11 and be upper end confined bar groove or bar pore structure, the lower extreme of balanced foot 21 is provided with and extends to the couple structure in the guide slot 11 along the horizontal direction, and balanced foot 21 is whole to be L shape structure this moment.

Specifically, the guide groove 11 only needs to be provided for the hook to extend into, and whether the through hole does not influence the use of the hook.

It should be noted that the balance leg 21 may have two different structures, as shown in fig. 6A and 6B, and the hook at the lower end of the balance leg 21 may extend in two opposite directions toward the outside of the upper cover 2 or the inside of the upper cover 2 to achieve the fixing with the guide groove 11.

When the guide slot 11 is a strip-shaped slot structure, the hook structure at the lower end of the balance foot 21 needs to be matched with the position of the guide slot 11, and when the guide slot 11 is concave at the outer side, the structure of the balance foot 21 is as shown in fig. 6B; when the guiding groove 11 is concave, the structure of the balancing leg 21 is as shown in fig. 6A; when the guide groove 11 has a strip-shaped hole structure, fig. 6A or fig. 6B may be used.

As shown in fig. 9, the guide groove 11 is a strip-shaped hole structure, and the balance leg 21 located at the outer periphery of the upper cover 2 extends outward relative to the upper cover 2 to form a hook and is connected to the guide groove 11.

It should be noted that the specific structure of the balance feet 21 and the guide grooves 11 is not to be considered as limiting the scope of protection of the present solution.

In order to further improve the balance of the key structure and simultaneously reduce the pushing key stroke, a scissor-leg structure is arranged in the key switch, the scissor-leg structure comprises a large balance bracket 4 and a small balance bracket 5 which are simultaneously fixed on the upper cover 2 and the base 1, the structure is shown in fig. 2, and the structure and the position after the assembly are shown in fig. 9.

Because the one end of big balanced support 4 and little balanced support 5 in the scissors foot structure all is fixed on upper cover 2, that is to say all is provided with the strong point in the four corners department of upper cover 2, therefore this button structure is more steady when using. The user can press any point on the upper cover 2 to move the upper cover 2 downwards, so that the phenomena of uneven pressure or key clamping are avoided, and the stability and the hand feeling of the key switch in use are further improved; in addition, compared with the traditional key structure, the scissor structure can effectively reduce the key stroke of the keyboard, and is more suitable for notebook computer equipment.

Because the key switch also has a sound production function, as an optional implementation mode, the key switch also comprises a movable spring sheet 6 structure for producing sound, the corresponding position of the large balance bracket 4 is provided with an impact column 41, and the movable spring sheet 6 can produce sound in a mode of impacting the impact column 41.

Specifically, the movable spring plate 6 is of an axisymmetric structure, and includes two action portions 61 with the same size and arranged oppositely, and a blocking piece 62 connecting the two action portions 61, as shown in fig. 8, the action portion 61 is of a Z-shaped structure as a whole, one end of the action portion is connected with the blocking piece 62, and the other end is bent and extends upwards to form a protruding point 611; the movable spring sheet 6 structure is located on the upper surface of the base 1, the upper cover 2 is provided with a convex block 22 matched with the action part 61 corresponding to the movable spring sheet 6, and the distance between the two oppositely arranged convex points 611 is smaller than the maximum width of the convex block 22; when the upper cover 2 is pressed, the bump 22 moves downwards and presses the convex point 611 to move downwards relative to the convex point 611, and at the moment, the movable spring sheet 6 deforms under the pressing action of the bump 22 and moves upwards to the position below the impact column 41 to realize impact sounding.

Because the movable elastic sheet 6 is of an axisymmetric structure, the number of the impact columns 41 on the large balance bracket 4 is two, and the two impact columns 41 can provide more stable impact to ensure the sound production effect.

The stopper piece 62 has a stopper function, in addition to connecting two oppositely disposed operating portions: when the movable elastic sheet 6 is placed at the corresponding position of the base 1, the blocking piece 62 just extends into the corresponding limiting structure on the base 1 to limit the height of the movable elastic sheet 6 to bounce, so that the movable elastic sheet 6 is prevented from deforming and moving upwards, and the fault rate of the key switch can be reduced.

As an alternative embodiment, the cross section of the bump 22 is a quadrilateral structure with bilateral symmetry, and the width of the middle part is greater than the widths of the upper and lower ends, at this time, the bump 22 can conveniently move up and down relative to the salient point 611, and the bump 22 in this embodiment is a diamond structure with rounded four corners.

Considering that the upper cover 2 needs to descend to a certain depth to enable the movable spring plate 6 to interact with the bump 22 to sound, the distance that the upper cover 2 moves downwards relative to the base 1 needs to be not less than the distance between the bump 22 and the salient point 611.

As an optional embodiment, the middle part of the upper surface of the base 1 extends upwards to form a supporting column 12, the lower surface of the upper cover 2 extends downwards to form a hollow structure 23 capable of being mutually inserted into the supporting column 12, and the elastic component 3 is sleeved outside the hollow structure 23.

As an alternative embodiment, the elastic component is a spring, and after the assembly is completed, the spring is located in the middle of the scissor-leg structure, and the scissor-leg structure can limit the spring.

Since the spring is confined between the scissor-foot structure and the hollow structure 23, the spring is required to be a large diameter spring, which further ensures the balance of the push button switch when pressed, compared to a conventional small diameter spring.

As an optional implementation manner, the key switch further includes a conducting device for realizing signal output, the conducting device is a metal sleeve 7 and an infrared pair transistor 8, a baffle 24 extending downward is disposed on a side portion of the upper cover 2, the baffle 24 is sleeved with the metal sleeve 7 from bottom to top, and when the upper cover 2 is forced to move downward, the metal sleeve 7 moves downward with the upper cover 2 to a position between the infrared pair transistor 8 to control on and off of the switch.

Considering that the upper cover 2 needs to descend to a certain depth to enable the metal sleeve 7 to interact with the infrared pair transistor 8, it is necessary to set the distance that the upper cover 2 moves downwards relative to the base 1 to be not more than the distance between the lower end of the metal sleeve 7 and the infrared pair transistor 8.

The working steps of the key switch are as follows:

1. when the key switch is in a static state, the movable elastic sheet 6 falls into the cavity of the base 1 for placing the movable elastic sheet 6 under the action of gravity;

2. when the upper cover 2 is stressed to move downwards, the two convex points 611 arranged oppositely on the movable elastic sheet 6 are pushed open by the convex block 22 positioned on the lower surface of the upper cover 2, then the convex block 22 slides downwards instantly, the movable elastic sheet 6 rises instantly under the action of self-resilience to impact the impact column 41 positioned on the large balance support 4 and send a 'dripping' sound, at the moment, the baffle 24 provided with the metal sleeve 7 is just blocked between the infrared pair transistors 8 to block infrared transmission, and the conduction function of the key switch is triggered;

3. when the external force applied to the upper cover 2 is removed, the upper cover 2 returns under the reaction force of the elastic component, the bump 22 jacks the movable elastic sheet 6 again, the upper cover 2 rises instantly, the movable elastic sheet 6 slides downwards along a corresponding track, at the moment, the baffle 24 provided with the metal sleeve 7 immediately pushes the middle of the infrared pair tubes 8 along with the rising of the upper cover 2, the infrared transmission between the infrared pair tubes 8 is recovered, and the on-state function of the keyboard switch is disconnected.

In actual use, a keycap is required to be installed above the upper cover 2 of the key switch according to needs, as an optional embodiment, at least two buckling holes 25 are further provided on the upper surface of the upper cover 2, and the keycap is fixedly connected with the upper cover 2 through the buckling holes 25. The switch is mounted as shown in fig. 10-11.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The high balance structure key switch is characterized by comprising a base, an upper cover and an elastic component,

the periphery of the base extends towards the direction of the upper cover and forms at least two guide grooves with closed top ends, the periphery of the upper cover extends downwards to form a balance pin corresponding to the guide grooves, the balance pin and the guide grooves are matched with each other and can slide up and down along the guide grooves, and the upper cover and the base are buckled with each other under the action of the guide grooves and the balance pin;

the elastic component is fixedly arranged between the base and the upper cover and provides a supporting force for the upper cover to be far away from the base.

2. The high balance structure key switch of claim 1, wherein the guide grooves are distributed at least on opposite sides of the base.

3. The key switch with the high balance structure as claimed in claim 1, wherein the guide groove is a bar-shaped hole structure, or the guide groove is a bar-shaped structure with a concave outer side wall or a concave inner side wall.

4. The high balance structure key switch according to any one of claims 1 to 3, wherein the lower end of the balance leg extends in a horizontal direction and forms a hook, and the hook can be inserted into the guide groove.

5. The key switch of claim 1, further comprising a large balance bracket and a small balance bracket, wherein the large balance bracket and the small balance bracket are disposed to cross each other and form a scissor-leg structure, and the scissor-leg structure is connected to the upper cover and the base, respectively.

6. The key switch with the high balance structure as claimed in claim 5, further comprising a movable spring plate located on the upper surface of the base, wherein the movable spring plate is of an axisymmetric structure and comprises two action parts which are the same in size and are oppositely arranged and a blocking piece for connecting the two action parts, one end of each action part is connected with the blocking piece, and the other end of each action part is bent and extends upwards to form a convex point;

the upper cover is provided with a lug matched with the action part at the position corresponding to the movable elastic sheet, and the distance between the two oppositely arranged salient points is smaller than the maximum width of the lug;

when the upper cover is pressed, the convex block extrudes the convex point and moves downwards relative to the convex point, so that the movable elastic sheet deforms and moves upwards.

7. The keyswitch with high balance structure as claimed in claim 6, wherein the sidewalls of the large balance bracket extend outward to form an impact post, the impact post is located above the striking plate, and when the striking plate moves upward relative to the base under the pressing action of the protrusion, the striking plate can strike the impact post and generate a sound.

8. The keyswitch with high balance structure as claimed in claim 1, wherein the middle portion of the upper surface of the base extends upward to form a supporting pillar, the lower surface of the upper cover extends downward to form a hollow structure capable of being plugged with the supporting pillar, and the elastic member is sleeved outside the hollow structure.

9. The key switch with the high balance structure as claimed in claim 1, further comprising a conducting device for outputting signals, wherein the conducting device is a metal sleeve and an infrared pair transistor, a baffle extending downwards is disposed on a side portion of the upper cover, the metal sleeve is sleeved on the baffle from bottom to top, and when the upper cover moves downwards, the metal sleeve moves downwards along with the upper cover to a position between the infrared pair transistor to control on and off of the switch.

10. The high balance structure key switch according to claim 1, wherein the upper surface of the upper cover is further provided with at least two fastening holes, and the keycap is fixedly connected with the upper cover through the fastening holes.

Images