CN114864319A - Ultra-thin balance key - Google Patents
Ultra-thin balance key Download PDFInfo
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- CN114864319A CN114864319A CN202210404337.3A CN202210404337A CN114864319A CN 114864319 A CN114864319 A CN 114864319A CN 202210404337 A CN202210404337 A CN 202210404337A CN 114864319 A CN114864319 A CN 114864319A
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- Prior art keywords
- wing
- arm
- linkage
- pivoting
- trigger
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
- H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
- H01H13/85—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Push-Button Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The invention discloses an ultrathin balance key, which is used for triggering an electronic element arranged on a PCB (printed circuit board) to generate a signal and comprises a keycap, a base plate and a linkage member arranged between the keycap and the base plate, wherein the linkage member comprises a linkage wing and a trigger wing which are pivoted with each other; the bottom plate is also provided with a bracket component which is matched with the limit structure to limit the linkage component; a seesaw fulcrum which is abutted against the bottom plate is formed at one side of the position, adjacent to the tail end, of each pivoting arm, facing the bottom plate; adopt the wing and the linkage wing that trigger of mutual pin joint, reduced spacing apron isotructure, further reduced and reciprocated the stroke under the stable prerequisite of ensureing to press balance, location coordination is stable between the linkage component, makes the button structure accomplish more save material, and is more frivolous.
Description
Technical Field
The invention relates to a switch device, in particular to an ultrathin balance key.
Background
An input device is a device that inputs data and information to a computer, and is the bridge that the computer communicates with a user or other devices, such as a keyboard. The keyboard is formed by combining a plurality of key switches.
The existing electronic equipment is more and more miniaturized, and the light and thin requirements on the keyboard are higher and higher. Taking a notebook computer as an example, the weight of the existing notebook computer is only about 1kg, the thickness of the whole computer is only about 13mm, and the key stroke of the switch key is only about 1.5mm, in order to meet the light and thin design of electronic equipment, one of the biggest obstacles influencing the thickness is the thickness of the keyboard, and the core problem influencing the thickness of the keyboard is the height (thickness) of the key switch, how to make the key switch ultrathin and not influence the balance stability when pressing, so as to ensure that a user can accurately and stably generate a switch signal when pressing different positions of a keycap, which is a technical problem in the field. In the prior art, in order to realize balanced and stable pressing of an ultrathin key switch, scissors feet with small key strokes are basically adopted, but the mechanism principle of the scissors feet limits that the scissors feet cannot be further thinned.
In addition, in the prior art, in order to achieve technical effects such as longer service life of the key switch, dust prevention, water prevention and the like, a great number of photoelectric switches are adopted to replace traditional switches such as metal contact pieces and contacts. The photoelectric switch is a switch that changes the amount of light received by a light receiving element from a light emitting element through a grating to form a switching signal.
The patent of patent number 202111067452.8 patent name "an ultra-thin balanced photoelectricity button structure of pressing" discloses a button structure that can effectively reduce the distance of pressing, nevertheless adopts spacing apron fixed torsion spring spare in this structure, has increased manufacturing cost correspondingly, still retrencies not enough, and this application provides a neotype button structure to this problem.
Disclosure of Invention
In view of the above problems, the present invention is directed to provide an ultra-thin balanced key with material saving and stable pressing.
In order to realize the technical purpose, the scheme of the invention is as follows: an ultra-thin balance key for triggering an electronic element arranged on a PCB to generate a signal comprises a key cap, a bottom plate and a linkage component arranged between the key cap and the bottom plate,
the linkage member comprises a linkage wing and a trigger wing which are mutually pivoted, pivoting arms extend from two sides of the linkage wing and the trigger wing, the tail ends of the pivoting arms of the linkage wing and the trigger wing are mutually pivoted, and each pivoting arm is provided with a limiting structure; the bottom plate is also provided with a bracket component which is matched with the limit structure to limit the linkage component;
a seesaw fulcrum which is abutted against the bottom plate is formed at one side of the position, adjacent to the tail end, of each pivoting arm, facing the bottom plate;
the linkage component also comprises a reset tension spring, one end of the reset tension spring is connected with the linkage wing, and the other end of the reset tension spring is connected with the trigger wing;
the key cap is buckled on the upper parts of the linkage wing and the trigger wing, and the trigger wing is provided with a trigger structure for triggering the electronic element to generate a signal.
Preferably, the outer side of the end of one pivoting arm of the linkage wing is provided with a central positioning column, the inner side of the linkage wing is provided with a pivoting shaft, and the end of the other pivoting arm of the linkage wing is only provided with a pivoting hole; the outer side of the tail end of one pivoting arm of the triggering wing is provided with a central positioning column, the inner side of the triggering wing is provided with a pivoting shaft, and the tail end of the other pivoting arm of the triggering wing is only provided with a pivoting hole; the linkage wing and the trigger wing are coupled with the pivoting hole of the other side through respective pivoting shafts to form a pivoting relation; the support component is provided with a central positioning groove relative to the central positioning columns of the linkage wing and the trigger wing, and the central positioning columns are limited in the left direction, the right direction and the downward direction.
Preferably, the outer side of each pivoting arm adjacent to the tail end is provided with a limiting convex column; the support component is provided with a limiting hole corresponding to the limiting convex column on each pivoting arm, and the limiting convex column is limited in the upward direction.
Preferably, the maximum diameter of the limiting convex column is smaller than the left-right width of the limiting hole, and the bottom of the limiting convex column facing to the bottom plate is of an inclined table structure.
Preferably, the bottom plate corresponding to the central positioning groove is provided with an empty avoiding groove allowing the tail end of the pivoting arm to descend, and arc-shaped supporting frames capable of limiting the descending of the central positioning column are arranged at the positions, located on the empty avoiding groove, of the two sides of the central positioning groove.
Preferably, the two end force arms of the reset tension spring are provided with hooks, the linkage wing and the trigger wing are provided with connecting holes for connecting the hooks, and the two end force arms of the reset tension spring are respectively fixed on the connecting holes through the hooks.
Preferably, the electrical element is a light-to-tube assembly formed by a light-emitting element and a photosensitive element and electrically connected with a patch on the PCB, the triggering structure is a grating plate arranged between pivoting arms at two sides of the triggering wing, and when the key cap is pressed, the grating plate of the triggering wing moves downwards to change the light path between the light-emitting element and the photosensitive element.
Preferably, the grating plate is a light shielding plate, and the light emitting element and the photosensitive element are located on two sides of the light shielding plate.
Preferably, the grating plate is a reflector plate, and the light-emitting element and the photosensitive element are located on the same side of the reflector plate.
Preferably, the bottom of the grating plate is provided with an avoidance column, and the bottom plate is provided with an avoidance hole corresponding to the avoidance column.
Preferably, the electric element is a Hall sensor electrically connected with the surface mount device and arranged on the PCB, the trigger structure is a magnetic part arranged between pivoting arms on two sides of the trigger wing, and when the keycap is pressed, the magnetic part of the trigger wing moves downwards to change the magnetic flux received by the Hall sensor.
Preferably, the key cap is provided with a pivoting cavity for pivoting the top ends of the trigger wing and the linkage wing, two ends of the trigger wing and the linkage wing extend out of a pivoting column corresponding to the pivoting cavity, and the top ends of the trigger wing and the linkage wing are limited in the pivoting cavity on the key cap through the pivoting column.
Preferably, the key further comprises a sounding mechanism for sounding a tap sound when the key is pressed.
Preferably, the sounding mechanism comprises a sounding torsion spring arranged on the linkage wing pivoting arm, and the sounding torsion spring is provided with a fixed arm and a sounding arm; the linkage wing is provided with a sounding power storage part corresponding to the sounding arm mechanism, the bottom of the keycap is provided with a sounding pressing block corresponding to the sounding arm mechanism, the sounding power storage part is provided with an inclined block part and a struck part positioned on the inclined block part, and the sounding arm is abutted against the inclined block part; when the keycap is pressed, the sounding pressing block applies pressure to the sounding arm to enable the sounding arm to store force downwards, when the keycap is pressed to a certain stroke, the sounding arm slides away from the sounding pressing block under the action of the inclined block part and returns upwards to strike the struck part to generate striking sound, and when the keycap is released to enable the sounding pressing block to move upwards to leave the sounding arm, the sounding arm returns.
Preferably, the pivot arm for mounting the sounding torsion spring is provided with a torsion spring fixing column and a fixing arm limiting block, the sounding torsion spring is sleeved on the torsion spring fixing column, and the fixing arm of the sounding torsion spring abuts against the fixing arm limiting block.
The invention has the beneficial effects that: the key structure has the advantages that the trigger wings and the linkage wings which are pivoted with each other are adopted and matched with structures such as tension springs, the limit cover plate structure is reduced, the up-and-down movement stroke is further reduced on the premise of ensuring the balance and stability of pressing, and the linkage components are stably positioned and matched, so that the key structure can save more materials and is thinner and lighter; in addition, the button still has output photoelectric signal function concurrently, presses the vocal function, for the user provides the flat feel of pressing, and assembly and disassembly is convenient, is fit for industry volume production.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural view of a coupling seat in the present invention;
FIG. 3 is a schematic structural diagram of a key cap according to the present invention;
FIG. 4 is a schematic structural view of a linking wing according to the present invention;
FIG. 5 is a schematic structural view of the triggering wing of the present invention;
FIG. 6 is a reference view of the linkage wing and the trigger wing in an un-pressed state according to the present invention;
FIG. 7 is a reference view showing a pressed state of the link wing and the trigger wing according to the present invention;
FIG. 8 is a schematic view of an assembly structure of the bracket member and the linking member according to the present invention;
fig. 9 is a schematic bottom structure view of the triggering wing of the present invention.
In the figure: 1, key caps; 11, sounding pressing blocks; 12 a pivot chamber;
2, a bottom plate; 21, clearance holes;
3 the linkage wing 31 sounding torsion spring 311 is fixed arm; 312 a sound emitting arm; 32 sound-producing power-storing part; 321 a sloping block part; 322 a struck portion; 33 a fixed arm limiting block; 34 torsion spring fixing posts;
4, triggering wings; 41 a light shielding plate; 42 escape columns;
5, pivoting an arm; 51 a seesaw fulcrum; 52 a central locating post; 53 a pivot shaft; 54 a pivot hole; 55 limiting convex columns; 56 connecting holes;
6 a bracket member; 61, a central positioning groove; 62 limiting hole; 63, arc-shaped supporting frames; 64, avoiding empty slots;
7, a reset tension spring; 71 hooks; 8, a light-to-tube assembly; 9PCB board.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments. In order to clearly and completely describe the technical scheme, the following embodiments are selected for illustration; the following examples are part of the present invention; other embodiments, which can be obtained without inventive step based on the present application, are within the scope of the present invention.
In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top/bottom", and the like are all based on the orientations and positional relationships shown in the drawings, and are only for the convenience of clearly describing the embodiments, but do not indicate or imply that the referred devices or elements have to have specific orientations, and therefore, the present application is not limited thereto. Meanwhile, the terms "first" and "second" in the embodiments are used only for distinguishing the descriptive purposes and are not intended to indicate or imply relative importance.
The specific embodiment of the application is an ultrathin balance key, which is used for triggering an electronic element arranged on a PCB (printed circuit board) 9 to generate a signal, and comprises a keycap 1, a base plate 2 and a linkage component arranged between the keycap 1 and the base plate 2, wherein the PCB 9 is arranged on the base plate 2 and is designed according to a component on the base plate 2 and a corresponding hole of a slotted hole, the linkage component enables the keycap 1 to synchronously move downwards when pressing any position, the linkage component comprises a linkage wing 3 and a trigger wing 4 which are mutually pivoted, pivoting arms 5 extend from two sides of the linkage wing 3 and the trigger wing 4, the tail end of the pivoting arm 5 of the linkage wing 3 and the tail end of the pivoting arm 5 of the trigger wing 4 are mutually pivoted, and each pivoting arm 5 is provided with a limit structure; the bottom plate 2 is also provided with a bracket component 6 which is matched with the limit structure to limit the linkage component;
the linkage component further comprises a reset tension spring 7, one end of the reset tension spring 7 is connected with the linkage wing 3, the other end of the reset tension spring is connected with the trigger wing 4, hooks 71 are arranged on force arms at two ends of the reset tension spring 7, connecting holes 56 used for connecting the hooks 71 are arranged on the linkage wing 3 and the trigger wing 4, and force arms at two ends of the reset tension spring 7 are respectively connected to the connecting holes 56 through the hooks 71. The key cap 1 is buckled on the upper parts of the linkage wing 3 and the trigger wing 4, the reset tension spring 7 is in a contraction state under the state of no external force, the linkage wing 3 and the trigger wing 4 are pulled upwards, when the key cap 1 is pressed, the linkage wing 3 and the trigger wing 4 are synchronously downward, the reset tension spring 7 is stretched, and the reset tension spring 7 is contracted and reset after hands are released.
The position of each pivoting arm 5 adjacent to the tail end is provided with a seesaw fulcrum 51 abutted against the bottom plate 2, one side of each pivoting arm 5 facing the bottom plate 2 is provided with a seesaw fulcrum 51, when the keycap 1 is pressed, the linkage wing 3 and the trigger wing 4 descend around the seesaw fulcrum 51 of the pivoting arm 5, the tail end of the pivoting arm 5 ascends but is limited on the bracket member 6 due to a limiting structure, and when the keycap 1 is released, the reset tension spring 7 contracts to pull up the linkage wing 3 and the trigger wing 4.
The limiting structure of the key pivot arm 5 comprises a central positioning column 52 and a limiting convex column 55, specifically, the outer side of the tail end of one pivot arm 5 of the linkage wing 3 is provided with a central positioning column 52, the inner side is provided with a pivot shaft 53, and the tail end of the other pivot arm 5 of the linkage wing 3 is only provided with a pivot hole 54; the outer side of the end of one of the pivoting arms 5 of the triggering wing 4 has a central positioning post 52, the inner side has a pivoting shaft 53, and the end of the other pivoting arm 5 of the triggering wing 4 has only a pivoting hole 54; the linkage wing 3 and the trigger wing 4 are coupled to each other through the respective pivot shafts 53 and the pivot holes 54 to form a pivot relationship. When the device is installed, the central positioning column 52 of the bracket component 6 corresponding to the linkage wing 3 and the trigger wing 4 is provided with a central positioning groove 61, the central positioning column 52 is limited in the left and right directions and in the downward direction, the bottom plate 2 is provided with a clearance groove 64 corresponding to the tail end of the pivoting arm 5, the central positioning groove 61 can prevent the tail end of the pivoting arm 5 from shifting left and right, in addition, the bottom plate 2 corresponding to the central positioning groove 61 is provided with a clearance groove 64 allowing the tail end of the pivoting arm 5 to descend, the two sides of the central positioning groove 61 positioned at the clearance groove 64 are provided with arc-shaped supporting frames 63 capable of limiting the descending of the central positioning column 52, when the central positioning column 52 falls to the arc-shaped supporting frames 63, the tail end of the pivoting arm 5 correspondingly falls in the clearance groove 64, the arc-shaped supporting frames 63 can limit the bottom of the central positioning column 52 and prevent the tail end of the pivoting arm 5 from sliding downwards, and the clearance groove 64 plays a clearance role in clearance towards the tail end of the pivoting arm 5, preventing the end of the pivoted arm 5 from hitting the base plate 2.
The limiting convex columns 55 are located at the outer side of the adjacent tail end of each pivoting arm 5, limiting holes 62 are formed in the support component 6 corresponding to the limiting convex columns 55 on each pivoting arm 5, the limiting convex columns 55 are limited in the upward direction, and when the pivoting arms 5 are lifted upwards around the lifting pivot points 51, limiting protrusions on the pivoting arms 5 are always limited in the limiting holes 62. Preferably, the bottom of the side of the bottom plate 2 facing the limiting convex column 55 is designed to be an inclined platform structure, so that the rotation of the limiting convex column 55 in the limiting hole 62 can be smoother, and after the linkage wing 3 and the trigger wing 4 are connected through the pivoting arm 5, the limiting convex column 55 can be directly inserted and locked in alignment with the limiting hole 62 because the maximum diameter of the limiting convex column 55 is smaller than the left and right width of the limiting hole 62.
The utility model provides a button can constitute and establish the photoelectricity button that can export the photoelectricity signal, the electric elements of button is the paster electricity and connects the light pair pipe subassembly 8 that sets up to constitute by light emitting component and light-sensitive element on PCB board 9, trigger structure is for constituting the grating board of locating between 4 both sides pin joint arms 5 of trigger wing, when pressing the key cap, the 4 grating boards of trigger wing move down and change the light path between light emitting component and the light-sensitive element to export the photoelectricity signal.
The grating board of the photoelectric key is preferably a light shielding plate 41, the light emitting element and the photosensitive element are located on two sides of the light shielding plate 41, a light path is formed between the light emitting element and the photosensitive element, and the light shielding plate 41 moves downwards to change the light path between the light emitting element and the photosensitive element.
The grating board of the photoelectric key is preferably a reflecting board, the light-emitting element and the photosensitive element are positioned on the same side of the reflecting board, and light emitted by the light-emitting element is reflected to the photosensitive element through the reflecting board to form a light path when the reflecting board moves downwards.
In order to make the grating plate abut against the PCB 9, the bottom of the grating plate is provided with a clearance pillar 42, and the bottom plate 2 is provided with a clearance hole 21 corresponding to the clearance pillar 42.
The utility model provides a button can construct to be established to the electromagnetism button that can output electromagnetic signal, and electric elements is the hall sensor that the paster electricity connection set up on PCB board 9, and the magnetic part of triggering the structure for constructing between the pin joint arm 5 of triggering 4 both sides of wing, when pressing the key cap, the magnetic part of triggering 4 wing moves down and changes the magnetic flux that hall sensor received.
In order to prevent the keycap 1 from horizontally swinging, a pivoting cavity 12 for pivoting the top ends of the trigger wing 4 and the linkage wing 3 is arranged on the keycap 1, pivoting columns corresponding to the pivoting cavities 12 extend out of two ends of the trigger wing 4 and the linkage wing 3, the top ends of the trigger wing 4 and the linkage wing 3 are limited to the pivoting cavities 12 on the keycap 1 through the pivoting columns, and the pivoting cavities 12 can prevent the keycap 1 from horizontally swinging due to a movable gap on the keycap 1 caused by the reduction of the distance between the two end parts after the linkage wing 3 and the trigger wing 4 move upwards due to resetting.
The key can be used as a mute or sound-producing key, and when the key is used as a sound-producing key, the key also comprises a sound-producing mechanism which is used for producing knocking sound when the key is pressed, the sound-producing mechanism comprises a sound-producing torsion spring 31 which is arranged on a pivoting arm of the linkage wing 3, and the sound-producing torsion spring 31 is provided with a fixed arm 311 and a sound-producing arm 312; the linkage wing 3 is provided with a sounding power storage part 32 corresponding to the sounding arm 312, the bottom of the keycap 1 is provided with a sounding press block 11 corresponding to the sounding arm 312, the sounding power storage part 32 is provided with an inclined block part 321 and a hit part 322 positioned on the inclined block part 321, and the sounding arm 312 is abutted against the inclined block part 321; when the key cap 1 is pressed, the sounding press block 11 applies pressure to the sounding arm 312 to enable the sounding arm 312 to accumulate downward force, when the key cap 1 is pressed to a certain stroke, the sounding arm 312 slides away from the sounding press block 11 under the action of the inclined block portion 321 to reset upwards to strike the struck portion 322 to generate striking sound, and when the key cap 1 is released to enable the sounding press block 11 to move upwards to leave the sounding arm 312, the sounding arm 312 resets.
Specifically, the sounding torsion spring 31 is fixed on the pivoting arm 5 through the torsion spring fixing column 33 and the fixing arm limiting block 33, the sounding torsion spring 31 is sleeved on the torsion spring fixing column 33, and the fixing arm 311 of the sounding torsion spring 31 abuts against the fixing arm limiting block 33.
When the key is installed, the PCB 9 is assembled on the bottom plate 2, the electrical element is pasted on the PCB 9, the linkage wing 3 and the trigger wing 4 are pivoted together through the pivot arm 5, the limiting convex column 55 is pressed into the limiting hole 62, the pivot arm 5 is positioned by the central positioning column 52, then the sounding torsion spring 31 and the reset tension spring 7 are installed, and finally the top ends of the linkage wing 3 and the trigger wing 4 are buckled with the key cap 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (15)
1. The utility model provides an ultra-thin balanced button for triggering the electronic component who sets up on the PCB board and producing the signal, include key cap, bottom plate and set up the linkage component between key cap and bottom plate, its characterized in that:
the linkage member comprises a linkage wing and a trigger wing which are mutually pivoted, pivoting arms extend from two sides of the linkage wing and the trigger wing, the tail ends of the pivoting arms of the linkage wing and the trigger wing are mutually pivoted, and each pivoting arm is provided with a limiting structure; the bottom plate is also provided with a bracket component which is matched with the limit structure to limit the linkage component;
a seesaw fulcrum which is abutted against the bottom plate is formed at one side of the position, adjacent to the tail end, of each pivoting arm, facing the bottom plate;
the linkage component also comprises a reset tension spring, one end of the reset tension spring is connected with the linkage wing, and the other end of the reset tension spring is connected with the trigger wing;
the key cap is buckled on the upper parts of the linkage wing and the trigger wing, and the trigger wing is provided with a trigger structure for triggering the electronic element to generate a signal.
2. The ultra-thin balance button of claim 1, wherein the linkage wing has a center positioning post at the outer side of the end of one of the pivoting arms, a pivoting shaft at the inner side, and only a pivoting hole at the end of the other pivoting arm; the outer side of the tail end of one pivoting arm of the trigger wing is provided with a central positioning column, the inner side of the triggering wing is provided with a pivoting shaft, and the tail end of the other pivoting arm of the trigger wing is only provided with a pivoting hole; the linkage wing and the trigger wing are coupled with the pivoting hole of the other side through respective pivoting shafts to form a pivoting relation; the central positioning columns corresponding to the linkage wings and the trigger wings on the support component are respectively provided with a central positioning groove, and the central positioning columns are limited in the left direction, the right direction and the downward direction.
3. The ultra-thin balancing button of claim 2, wherein each pivoting arm has a limiting protrusion on the outside of the pivoting arm adjacent to the distal end; the support component is provided with a limiting hole corresponding to the limiting convex column on each pivoting arm, and the limiting convex column is limited in the upward direction.
4. The ultra-thin balance key of claim 3, wherein the maximum diameter of the position-limiting convex column is smaller than the left and right width of the position-limiting hole, and the bottom of the position-limiting convex column facing the bottom plate is configured to be a sloping platform structure.
5. The ultra-thin balance button as claimed in claim 3, wherein the bottom plate corresponding to the center positioning slot is formed with a clearance slot allowing the end of the pivot arm to move downward, and arc-shaped supporting frames capable of limiting the downward movement of the center positioning post are formed at the positions of the clearance slot at both sides of the center positioning slot.
6. The ultra-thin balance key as claimed in claim 1, wherein the force arms at the two ends of the reset tension spring are provided with hooks, the linkage wing and the trigger wing are provided with connecting holes for connecting the hooks, and the force arms at the two ends of the reset tension spring are respectively fixed on the connecting holes through the hooks.
7. The ultra-thin balanced key of claim 3, wherein the electrical component is a pair of optical tubes assembly composed of a light emitting component and a photosensitive component and electrically connected to the surface mount, the triggering structure is a grating plate disposed between the pivoting arms at two sides of the triggering wing, and when the key cap is pressed, the grating plate of the triggering wing moves downward to change the optical path between the light emitting component and the photosensitive component.
8. The ultra-thin balanced key of claim 7, characterized in that the grating plate is a light shield, and the light emitting element and the light sensitive element are located on both sides of the light shield.
9. The ultra-thin balanced key of claim 7, characterized in that the grating plate is a reflector plate, and the light emitting element and the photosensitive element are located on the same side of the reflector plate.
10. The ultra-thin balanced key as claimed in claim 7, wherein the bottom of the grating plate is provided with a void-avoiding pillar, and the bottom plate is provided with a void-avoiding hole corresponding to the void-avoiding pillar.
11. The ultra-thin balance key of claim 3, wherein the electrical component is a Hall sensor electrically connected to a Surface Mount Device (SMD) disposed on the PCB, the triggering structure is a magnetic member disposed between the pivoting arms at two sides of the triggering wing, and when the key cap is pressed, the magnetic member of the triggering wing moves downward to change the magnetic flux received by the Hall sensor.
12. The ultra-thin balanced key as recited in claim 3, wherein the key cap is provided with a pivot cavity for pivotally connecting the top ends of the trigger wing and the linkage wing, the two ends of the trigger wing and the linkage wing extend out of a pivot post corresponding to the pivot cavity, and the top ends of the trigger wing and the linkage wing are limited to the pivot cavity on the key cap by the pivot post.
13. The ultra-thin balanced key of any one of claims 1 to 12 further comprising a sound mechanism for making a clicking sound when the key is pressed.
14. The ultra-thin balanced key of claim 13 wherein the sound mechanism includes a sound torsion spring mounted on a linkage wing pivot arm, the sound torsion spring having a fixed arm and a sound arm; the linkage wing is provided with a sounding power storage part corresponding to the sounding arm mechanism, the bottom of the keycap is provided with a sounding pressing block corresponding to the sounding arm mechanism, the sounding power storage part is provided with an inclined block part and a struck part positioned on the inclined block part, and the sounding arm is abutted against the inclined block part; when the key cap is pressed, the sounding pressing block applies pressure to the sounding arm to enable the sounding arm to store force downwards, when the key cap is pressed to a certain stroke, the sounding arm slides away from the sounding pressing block under the action of the inclined block portion to reset upwards to strike the struck portion to send striking sound, and when the key cap is released to enable the sounding pressing block to move upwards to be away from the sounding arm, the sounding arm resets.
15. The ultra-thin balanced key as claimed in claim 14, wherein the pivotally connected arm of the sound-generating torsion spring has a torsion spring fixing post and a fixing arm limiting block, the sound-generating torsion spring is sleeved on the torsion spring fixing post, and the fixing arm of the sound-generating torsion spring abuts against the fixing arm limiting block.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404337.3A CN114864319A (en) | 2022-04-18 | 2022-04-18 | Ultra-thin balance key |
| PCT/CN2022/000150 WO2023201449A1 (en) | 2022-04-18 | 2022-11-17 | Ultra-thin balance key |
| TW111212744U TWM643972U (en) | 2022-04-18 | 2022-11-21 | Ultra-thin balanced keypad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404337.3A CN114864319A (en) | 2022-04-18 | 2022-04-18 | Ultra-thin balance key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114864319A true CN114864319A (en) | 2022-08-05 |
Family
ID=82630896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210404337.3A Pending CN114864319A (en) | 2022-04-18 | 2022-04-18 | Ultra-thin balance key |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114864319A (en) |
| TW (1) | TWM643972U (en) |
| WO (1) | WO2023201449A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201449A1 (en) * | 2022-04-18 | 2023-10-26 | 广东瑞讯电子科技有限公司 | Ultra-thin balance key |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6005209A (en) * | 1997-11-24 | 1999-12-21 | International Business Machines Corporation | Thin keyboard having torsion bar keyswitch hinge members |
| CN109767947A (en) * | 2019-01-27 | 2019-05-17 | 东莞市凯华电子有限公司 | A kind of ultra-thin mechanical keyswitch |
| CN110729145A (en) * | 2019-11-18 | 2020-01-24 | 深圳市航世科技有限公司 | Key of scissor structure and keyboard applying same |
| CN213877895U (en) * | 2020-12-29 | 2021-08-03 | 东莞市凯华电子有限公司 | Combined trigger type conduction sounding mechanism applied to keyboard switch |
| CN215731437U (en) * | 2021-05-20 | 2022-02-01 | 东莞市凯华电子有限公司 | Photoelectric key switch with increased pressing hand feeling |
| CN113644906A (en) * | 2021-09-13 | 2021-11-12 | 广东瑞讯电子科技有限公司 | Ultrathin balance pressing photoelectric key structure |
| CN114864319A (en) * | 2022-04-18 | 2022-08-05 | 广东瑞讯电子科技有限公司 | Ultra-thin balance key |
-
2022
- 2022-04-18 CN CN202210404337.3A patent/CN114864319A/en active Pending
- 2022-11-17 WO PCT/CN2022/000150 patent/WO2023201449A1/en unknown
- 2022-11-21 TW TW111212744U patent/TWM643972U/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023201449A1 (en) * | 2022-04-18 | 2023-10-26 | 广东瑞讯电子科技有限公司 | Ultra-thin balance key |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM643972U (en) | 2023-07-21 |
| WO2023201449A1 (en) | 2023-10-26 |
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