WO2023035092A1 - Structure de touche photoélectrique ultra-mince à pression équilibrée - Google Patents

Structure de touche photoélectrique ultra-mince à pression équilibrée Download PDF

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Publication number
WO2023035092A1
WO2023035092A1 PCT/CN2021/000228 CN2021000228W WO2023035092A1 WO 2023035092 A1 WO2023035092 A1 WO 2023035092A1 CN 2021000228 W CN2021000228 W CN 2021000228W WO 2023035092 A1 WO2023035092 A1 WO 2023035092A1
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WO
WIPO (PCT)
Prior art keywords
wing
light
grating
coupling
keycap
Prior art date
Application number
PCT/CN2021/000228
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English (en)
Chinese (zh)
Inventor
陈爱华
Original Assignee
广东瑞讯电子科技有限公司
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Publication date
Application filed by 广东瑞讯电子科技有限公司 filed Critical 广东瑞讯电子科技有限公司
Publication of WO2023035092A1 publication Critical patent/WO2023035092A1/fr

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices

Definitions

  • the invention relates to a switch device, in particular to a photoelectric switch, in particular to an ultra-thin balanced pressing photoelectric key structure, which is mainly used for peripheral devices such as keyboards and other signal input devices.
  • the input device is a device that points to the computer to input data and information, and is a bridge for the computer to communicate with the user or other devices, such as a keyboard.
  • the keyboard is composed of several key switches.
  • the photoelectric switch is a switch that changes the amount of light received by the light-receiving element from the light-emitting element through a grating to form a switch signal.
  • the purpose of the present invention is to further make the photoelectric switch thinner, make its pressing stroke smaller than the scissor feet, and meet the technical requirements of balance and stability. Based on this purpose, a new photoelectric switch suitable for Structure.
  • the present invention aims to provide an ultra-thin balanced pressing photoelectric key structure that effectively reduces the pressing distance.
  • the solution of the present invention is: an ultra-thin balanced pressing photoelectric key structure, including a keycap, a light-emitting element and a photosensitive element arranged on the PCB board, and a light-sensitive element for receiving the light-emitting element from the light-sensitive element.
  • the grating structure with variable light generation is characterized in that the grating structure is a grating wing coupled with a linkage wing, and the linkage wing and the grating wing are coupled to move up and down synchronously; there are two warping arms between the linkage wing and the grating wing.
  • Torsion spring one warped arm of the reset torsion spring provides upward reset elastic force for the linkage wing, and the other warped arm provides upward reset elastic force for the grating wing, and the keycap is fastened on the upper part of the linkage wing and the grating wing; press any position of the keycap All of them can drive the grating wings to go down, so that the light received by the photosensitive element changes to generate a key signal.
  • the grating wing and the linkage wing are coupled through a coupling seat, and coupling arms are extended on both sides of the linkage wing and the grating wing; one side of the coupling arm protrudes with an anti-off fulcrum;
  • a bracket is provided at a position corresponding to the anti-off fulcrum, and an accommodating notch is provided on the bracket, and the anti-off fulcrum can be movably embedded in the corresponding accommodating notch and limited up and down.
  • it also includes a limit cover plate that can be fixed on the coupling seat, and the position limit cover plate is configured with an anti-off groove at a position corresponding to the notch of the bracket, and the anti-off groove can prevent it from being embedded in the accommodating notch.
  • the fulcrum in the placement notch breaks away from the accommodation notch.
  • the end of one coupling arm is configured as a concave-shaped coupling opening
  • the end of the other coupling arm is configured as a coupling block that can extend into the coupling opening.
  • a hook portion is formed between the anti-falling grooves, and a slot is provided on the bracket at a position corresponding to the hook portion, and the space-limiting cover plate and the bracket are fastened by the hook portion and the slot.
  • the limit cover plate is also provided with a torsion spring groove for accommodating the reset torsion spring.
  • the linkage wing is provided with a sound-generating force storage part
  • the sound-generating force-storage part corresponds to a sound-generating torsion spring
  • the position-limiting cover is provided with a fixed cavity at the position of the sound-generating torsion spring, and the sound-generating torsion spring is It is fixed in the fixed cavity
  • the sounding force storage part is provided with a circular arc chamfer
  • the force arm of the sounding torsion spring extends to the position of the circular arc chamfer
  • the keycap is pressed, the circular arc chamfer exerts pressure on the
  • the force arm slides away from the arc chamfer and hits the limit cover to make a knocking sound; when the keycap is released, the arc chamfer moves upward and resets to above the arm of force.
  • a grating part extends from the grating wing and its coupling arm in the same direction
  • a light-shielding plate extends downward from the end of the grating part, and the light-emitting element and the photosensitive element are located on both sides of the light-shielding plate.
  • a light-limiting plate is also arranged on the connecting seat, and a light-through hole is arranged on the light-limiting plate, the light-emitting element and the photosensitive element are located on both sides of the light-limiting plate, and the light-shielding plate is located on one side of the light-limiting plate ;
  • the shading plate descends, it can gradually cover the light hole in a shearing manner so that the photosensitive element can receive a linearly changing luminous flux.
  • the keycap is provided with a connection part for connecting the top of the grating wing and the linkage wing, and a limit stop that prevents the keycap from shaking horizontally on the top of the grating wing and the linkage wing.
  • the PCB board is provided with an assembly card seat for fixing and installing the connection seat.
  • the assembly card seat is a hollow frame structure, and both sides of the frame are provided with raised pressing bars, and at least one side of the pressing bar is Shrinkage channels are hollowed out on adjacent frames.
  • the beneficial effects of the present invention are: the mutually coupled grating wings and linkage wings are adopted to further reduce the up and down movement stroke on the premise of ensuring the balance and stability of pressing, so that the button structure can be made lighter and thinner; at the same time, the grating wings have the ability to trigger photoelectric signals Function, the linkage wing has the function of pressing and sounding, the stroke limit between the grating wing and the linkage wing, the overall stability, the pressing response is quick, it can provide a flat pressing feel, and the installation and removal are very convenient, suitable for industrial mass production.
  • Fig. 1 is a schematic diagram of a key assembly structure of the present invention
  • Fig. 2 is the key exploded view of the present invention
  • Fig. 3 is the schematic structural view of the coupling seat in the present invention.
  • Fig. 4 is the structural schematic diagram of the limit cover plate in the present invention.
  • Fig. 5 is the schematic structural view of the assembled card holder in the present invention.
  • Fig. 6 is a structural schematic diagram of the torsion spring connecting the grating wing and the linkage wing in the present invention
  • Fig. 7 is a structural schematic diagram of the release state of the grating wing and the linkage wing in the present invention.
  • Fig. 8 is a structural schematic diagram of the grating wing and the linkage wing in the pressing state of the present invention.
  • Fig. 9 is a structural schematic diagram of the present invention omitting the keycap and the limit cover;
  • Fig. 10 is a schematic diagram of the side structure of the grating wing and the linkage wing of the present invention.
  • Fig. 11 is one of the partially enlarged schematic diagrams of A in Fig. 10;
  • Fig. 12 is a partial enlarged schematic diagram of A in Fig. 10;
  • Fig. 13 is a schematic structural view of the bottom of the keycap of the present invention.
  • the specific embodiment of the present invention is an ultra-thin balanced press photoelectric key structure, which is used to be arranged as a key to output switch signals, and multiple keys can be used to form a keyboard or other related input devices, etc.
  • the button of the present invention completes the action of the whole button by pressing the keycap 1, and each button includes a keycap 1, a light-emitting element 71 and a photosensitive element 72 arranged on the PCB board, and is used to make the photosensitive element 72 receive
  • the light quantity of the light-emitting element 71 produces a variable grating structure, and pressing the keycap 1 can establish an electrical connection and realize a change of the light path, thereby performing a switch operation.
  • the grating structure is a grating wing 4 coupled with a linkage wing 5.
  • the linkage wing 5 and the grating wing 4 are coupled to move up and down synchronously.
  • the keycap 1 is fastened on the upper part of the linkage wing 5 and the grating wing 4. .
  • the static angle between the linkage wing 5 and the coupling arm of the grating wing 4 is an obtuse angle; when the keycap 1 is pressed to the bottom, the opening angle between the linkage wing 5 and the grating wing 4 gradually increases, and the coupling arm The maximum angle between them can be 180 degrees; when released, a reset torsion spring 8 with two warped arms is provided between the linkage wing 5 and the grating wing 4, and one warped arm of the reset torsion spring 8 provides upward elastic force for the linkage wing 5, The other warping arm provides upward elastic force for the grating wing 4 , and the reset torsion spring 8 provides upward elastic force for resetting the linkage wing 5 and the grating wing 4 .
  • each coupling arm 43 protrudes with an anti-off fulcrum 41; the position corresponding to the anti-off fulcrum 41 on the coupling seat 2 is provided with a bracket 21, and the bracket 21 is provided with an accommodating notch 22, and the anti-off fulcrum 41 can be movably embedded in the corresponding accommodating notch 22 and be limited up and down.
  • the accommodating notch 22 limits the upper and lower positions of the coupling arm 43. Since the coupling between the grating wing and the linkage wing is not a mutual locking relationship (as shown in FIG. 7 ), but a connection relationship that can be plugged in and out arbitrarily, In order to prevent the detachment of mutual coupling between the coupling arms, it is necessary to limit the horizontal position of the coupling arms. Therefore, in a specific embodiment of the present invention, a limit cover plate that can be fixed on the coupling seat 2 is also provided. 3. The limit cover 3 is provided with an anti-loosening groove 31 at a position corresponding to the accommodation notch 22 of the bracket 21. The anti-loosening groove 31 can prevent the fulcrum embedded in the accommodating notch 22 from detaching from the accommodating notch 22 , which prevents the two coupled arms from being separated from each other.
  • the space-limiting cover 3 of the present application and the connection seat 2 are fixed in the following manner.
  • a hook portion 32 is formed between the anti-off grooves 31 of the space-limiting cover 3, and the bracket 21 of the connection seat 2 is provided with a catch.
  • the slot 23 corresponding to the hook 32, the limit cover 3 and the bracket 21 are connected together through the hook 32 and the slot 23.
  • the limit cover 3 is also provided with a torsion spring 8 for accommodating the reset.
  • the torsion spring groove 33 is also provided with a torsion spring 8 for accommodating the reset.
  • the two coupling arms 43 that are coupled to each other in the button structure of the present application specifically, the end of one of the coupling arms 43 is configured as a concave coupling port 42, and the end of the other coupling arm 43 is configured to extend into the
  • the coupling block 51 in the coupling port 42 is pressed at any position of the keycap 1
  • the coupling arm 43 at one end is displaced downward, so that the coupling block 51/coupling port 42 rises, and the coupling arm 43 at the other end moves downward to release the key.
  • the two coupling arms 43 reset upward together with the torsion spring, so that the two coupling arms 43 are the same up and down.
  • a grating part 44 extends out from the grating wing 4 and its coupling arm in the same direction, and a light shielding plate 45 extends downward from the end of the grating part 44, and the light-emitting element and Photosensitive elements are located on both sides of the visor.
  • a light-limiting plate 24 is also constructed on the connection seat 2, and the light-limiting plate 24 is provided with a light-through hole 25, and the light-emitting element and the photosensitive element are positioned at both sides of the light-limiting plate 24, and the light-shielding plate 45 is positioned at one side of the light-limiting plate 24; When the plate 45 descends, it can gradually cover the light hole 25 in a shearing manner so that the photosensitive element receives a linearly changing luminous flux.
  • the linkage wing 5 As the linkage wing 5 that triggers the sound, the linkage wing 5 is provided with a sound-generating power storage part 53, and the sound-generating power-storage part 53 corresponds to a sound-generating torsion spring 52.
  • the sounding torsion spring 52 is fixed in the fixed cavity 54;
  • the sounding force storage part 53 is provided with a circular arc chamfer, and a force arm of the sounding torsion spring 52 extends to the position of the circular arc chamfer; when pressing the keycap 1
  • the arc chamfering applies pressure to the force arm to store force downward, when the keycap 1 is pressed to a certain stroke, the force arm slides away from the arc chamfering and hits the limit cover 3 to make a knocking sound;
  • the limit cover There is also a corresponding protruding hit part on the top, so that the middle section of the sounding torsion spring can hit the hit part, preventing the end of the sounding torsion spring from hitting and damaging
  • the linkage wing 5 is provided with 53 sound-generating force storage parts, and the lower part of the linkage wing 5 is connected with a sound-generating torsion spring 52. Pressing any position of the keycap 1 can drive the linkage wing 5 to move downward to make the sound-generating torsion spring 52 store force downward, and release it. When the keycap 1 makes sound, the torsion spring 52 turns back and knocks the linkage wing 5 to make a sound.
  • the PCB board 7 is provided with an assembly card seat 6 for fixing and installing the connection seat.
  • the assembly card seat 6 is a hollow frame structure, and both sides in the frame are provided with warped clamping strips 61.
  • the connection seat The edge of 2 is pressed by the clamping strip 61 and then fixed.
  • the present invention hollows out a contraction groove 62 on the frame adjacent to the clamping strip 61 on at least one side.
  • adopt tools such as press pliers to press the frame that has contraction through groove 62, can make frame can shrink and then make clamping bar 61 away from connection seat 2, greatly facilitate the removal and replacement of button, improve efficiency. If the contraction channel 62 is not provided, the entire frame is rigid and has no compressed space, and the above technical effects cannot be achieved.
  • the keycap 1 is provided with a connecting portion 11 for connecting the top ends of the grating wing 4 and the linkage wing 5, and is also provided with a limit stopper 12 to prevent the keycap from shaking horizontally, the limit stopper 12 It can prevent the grating wing 4 and the interlocking wing 5 from shaking from side to side due to the movable gap on the top of the keycap due to the smaller distance between the two ends after the grating wing 4 and the linkage wing 5 are reset and moved up.
  • an LED lamp 73 is also installed on the PCB, and the light emitted by the LED passes through the key cap to make the keys have an aesthetic feeling of light effect.
  • This application is different from the general scissors button structure. It adopts mutually coupled grating wings and linkage wings, which further reduces the up and down movement stroke on the premise of ensuring the balance and stability of pressing, so that the key structure can be made lighter and thinner; at the same time, the grating wings have The function of triggering the photoelectric signal, the linkage wing has the function of pressing and sounding, the stroke limit between the grating wing and the linkage wing, the overall stability, the pressing response is quick, it can provide a flat pressing feel, and the installation and disassembly are very convenient, suitable for industrial mass production .

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  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

L'invention concerne une structure de touche photoélectrique ultra-mince à pression équilibrée. Une structure de porte optique est une aile de porte optique couplée à une aile liée, l'aile liée et l'aile de porte optique étant couplées pour effectuer un mouvement vertical synchrone ; un ressort de torsion de rappel ayant deux pieds surélevés est disposé entre l'aile liée et l'aile de porte optique, une patte surélevée du ressort de torsion de retour fournissant une force élastique vers le haut pour l'aile liée, et l'autre patte surélevée fournissant une force élastique vers le haut pour l'aile de porte optique ; un dessus de touche est mis en prise au niveau de parties supérieures de l'aile liée et de l'aile de porte optique ; et presser n'importe quelle position du dessus de touche peut entraîner l'aile de porte optique vers le bas, amenant ainsi la quantité de lumière reçue par un élément photosensible à changer, de façon à générer un signal de touche. La présente solution utilise une aile de porte optique et une aile liée qui sont couplées l'une à l'autre, et un déplacement vertical est en outre réduit tout en assurant une pression équilibrée et stable, permettant à une structure de touche d'être plus légère et plus mince ; également, l'aile de porte optique a une fonction de déclenchement de signal photoélectrique, l'aile liée a une émission sonore lors de la fonction de pression, le déplacement entre l'aile de porte optique et l'aile liée est limité, la présente solution est stable dans son ensemble, revient rapidement lorsqu'elle est pressée, et est appropriée pour une production de masse industrielle.
PCT/CN2021/000228 2021-09-13 2021-11-26 Structure de touche photoélectrique ultra-mince à pression équilibrée WO2023035092A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111067452.8A CN113644906A (zh) 2021-09-13 2021-09-13 超薄平衡按压光电按键结构
CN202111067452.8 2021-09-13

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WO2023035092A1 true WO2023035092A1 (fr) 2023-03-16

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CN (1) CN113644906A (fr)
TW (1) TWM626806U (fr)
WO (1) WO2023035092A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113644906A (zh) * 2021-09-13 2021-11-12 广东瑞讯电子科技有限公司 超薄平衡按压光电按键结构
CN114864319A (zh) * 2022-04-18 2022-08-05 广东瑞讯电子科技有限公司 超薄平衡按键

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100108482A1 (en) * 2007-10-29 2010-05-06 Research In Motion Limited Illuminated key-pad assembly
CN105261507A (zh) * 2015-08-19 2016-01-20 东莞市美光达光学科技有限公司 一种产生按压触感及快速回弹的薄型键盘开关键组结构
CN111180233A (zh) * 2020-02-13 2020-05-19 东莞市名键电子科技有限公司 一种超薄x平衡架机械按键
CN211457110U (zh) * 2020-04-14 2020-09-08 广东易讯电子科技有限公司 一种光变量型平衡架按键
CN213781893U (zh) * 2021-01-05 2021-07-23 广东瑞讯电子科技有限公司 一种超薄微动按键组件
CN113299512A (zh) * 2021-06-24 2021-08-24 广东瑞讯电子科技有限公司 一种超薄按键
CN113644906A (zh) * 2021-09-13 2021-11-12 广东瑞讯电子科技有限公司 超薄平衡按压光电按键结构
CN216162698U (zh) * 2021-09-13 2022-04-01 广东瑞讯电子科技有限公司 一种超薄平衡按压光电按键结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100108482A1 (en) * 2007-10-29 2010-05-06 Research In Motion Limited Illuminated key-pad assembly
CN105261507A (zh) * 2015-08-19 2016-01-20 东莞市美光达光学科技有限公司 一种产生按压触感及快速回弹的薄型键盘开关键组结构
CN111180233A (zh) * 2020-02-13 2020-05-19 东莞市名键电子科技有限公司 一种超薄x平衡架机械按键
CN211457110U (zh) * 2020-04-14 2020-09-08 广东易讯电子科技有限公司 一种光变量型平衡架按键
CN213781893U (zh) * 2021-01-05 2021-07-23 广东瑞讯电子科技有限公司 一种超薄微动按键组件
CN113299512A (zh) * 2021-06-24 2021-08-24 广东瑞讯电子科技有限公司 一种超薄按键
CN113644906A (zh) * 2021-09-13 2021-11-12 广东瑞讯电子科技有限公司 超薄平衡按压光电按键结构
CN216162698U (zh) * 2021-09-13 2022-04-01 广东瑞讯电子科技有限公司 一种超薄平衡按压光电按键结构

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TWM626806U (zh) 2022-05-11
CN113644906A (zh) 2021-11-12

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