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WO2016004755A1 - Commutateur de clavier ultra-mince - Google Patents

Commutateur de clavier ultra-mince Download PDF

Info

Publication number
WO2016004755A1
WO2016004755A1 PCT/CN2015/071178 CN2015071178W WO2016004755A1 WO 2016004755 A1 WO2016004755 A1 WO 2016004755A1 CN 2015071178 W CN2015071178 W CN 2015071178W WO 2016004755 A1 WO2016004755 A1 WO 2016004755A1
Authority
WO
WIPO (PCT)
Prior art keywords
pivoting
movable contact
lower frame
ultra
keyboard switch
Prior art date
Application number
PCT/CN2015/071178
Other languages
English (en)
Chinese (zh)
Inventor
吴福喜
Original Assignee
东莞市凯华电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞市凯华电子有限公司 filed Critical 东莞市凯华电子有限公司
Priority to KR1020177001071A priority Critical patent/KR101870587B1/ko
Publication of WO2016004755A1 publication Critical patent/WO2016004755A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12—Push-buttons
    • H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
    • 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
    • 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
    • H01H13/7073—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 characterised by springs, e.g. Euler springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/036—Minimise height

Definitions

  • the invention relates to the field of keyboard switch technology, in particular to an ultra-thin keyboard switch.
  • the keyboard switch is a switch applied and mounted on a keyboard.
  • the main structure of the switch includes a base, an upper cover, a static contact piece, a movable contact piece and a button member, and the upper cover and the base are enclosed.
  • the accommodating cavity, the static contact piece, the movable contact piece and the button member are disposed in the accommodating cavity, and one end of the button member is exposed outside the accommodating cavity, and the button member is moved up and down by pressing the manipulation button member, and then the button is passed through the button
  • the piece acts on the movable contact piece such that the movable contact piece is in contact with or disconnected from the static contact piece.
  • the above-mentioned existing keyboard switch structure can provide the user with the effect of disconnecting or conducting the connection between the static contact piece and the movable contact piece, and is indeed progressive, but finds its own structure and use in actual use. There are still many shortcomings in performance, which cause the existing keyboard switch to fail to achieve the best use effect and work efficiency in practical applications. :
  • the button member of the switch of the existing keyboard is in the form of a guide post, so that the whole product is thicker, and the button member is mounted on the bottom center of the key cap.
  • the button member cannot be smoothly The pressure, and thus the conduction between the static contact piece and the movable contact piece, cannot be achieved, and the use is relatively inconvenient.
  • the present invention is directed to the absence of the prior art, and its main object is to provide an ultra-thin keyboard switch, which can effectively solve the problem that the existing keyboard switch is thick and inconvenient to use.
  • An ultra-thin keyboard switch includes a seat body, a static contact piece, a support piece, a movable contact piece, a lower frame, an upper frame and a key cap; the static contact piece and the support piece are separately disposed on the base body, and the static touch
  • the sheet has a first soldering leg and a static contact
  • the supporting piece has a second soldering leg, and the second soldering leg and the first soldering leg respectively extend outside the body
  • the movable contact piece is in contact with the supporting piece and is electrically connected
  • the other end of the contact has a movable contact, and the movable contact is located above the static contact
  • the upper frame and the lower frame cross each other and can be pivotally connected together, and the lower end of the upper frame and the lower end of the lower frame respectively
  • the two ends of the base body are pivotally connected, and the upper end of the upper frame and the upper end of the lower frame are respectively pivotally connected with the bottom ends of the key cap, and the upper frame and the lower frame
  • the lower frame and the upper frame are both U-shaped, and the lower frame includes a first cross bar and two first links, and both ends of the first cross bar extend outwardly to have a first shape.
  • a pivoting shaft the first pivoting shaft is pivotally connected to the keycap, and the two first connecting rods are parallel to each other and respectively integrally connected with the two ends of the first crossbar, and the inner ends of the tail ends of the two first connecting rods are extended a second pivoting shaft, the second pivoting shaft is pivotally connected to the base;
  • the upper frame includes a second crossbar and two second links, and both ends of the second crossbar extend outwardly to have a third pivot
  • the second pivoting shaft is pivotally connected to the keycap, and the two second connecting rods are parallel to each other and integrally connected with the two ends of the second crossbar, and the inner ends of the second connecting rods are extended a fourth pivoting shaft, the fourth pivoting shaft is pivotally connected to the seat body, and the two second links are respectively located on the inner sides of
  • the first end surface of the first connecting rod is concavely provided with a first embedding groove
  • the inner side of the front end of the first connecting rod is concavely provided with a second embedding groove, and in the overlapping state, the second connecting rod
  • the front half is embedded in the first embedding groove
  • the rear half of the second link is embedded in the second embedding groove.
  • a sixth pivoting shaft extends outwardly from a central portion of the second connecting rod, and correspondingly, the first connecting rod is provided with a pivoting hole, and the sixth pivoting shaft is inserted into the pivoting hole. The center is connected.
  • first pivoting slot and the second pivoting slot are recessed on the base body, and the second pivoting shaft and the fourth pivoting axle are respectively engaged with the first pivoting slot and the first pivoting slot
  • the second pivoting slot is disposed in the first pivoting slot and the second pivoting slot.
  • the upper cover is respectively disposed in the first pivoting slot and the second pivoting slot. The contact is located below the upper cover.
  • the bottom of the keycap is provided with a third pivoting slot and a fourth pivoting slot, and the first pivoting shaft and the third pivoting axle respectively are respectively engaged with the third pivoting slot and the first pivoting slot
  • the four pivoting slots are pivotally connected.
  • the elastic member is a tension spring, and one end of the tension spring is hooked with the upper frame, and the other end of the tension spring is hooked with the movable contact piece.
  • the elastic member is a spring piece integrally formed on the touch piece, and the movable contact piece is mounted and connected to the lower frame.
  • the seat body is embedded in the X-shaped structure.
  • the seat body is located below the X-shaped structure.
  • the present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:
  • the product is made.
  • the overall thickness is thinned, and regardless of any position of the finger on the keycap, the upper frame and the lower frame can be linked to move the movable contact to achieve stable pressing, so that the static contact and the movable contact are connected. More sensitive, the product is more convenient to use.
  • FIG. 1 is a perspective view showing the assembly of a first preferred embodiment of the present invention
  • Figure 2 is an exploded view of the first preferred embodiment of the present invention
  • Figure 3 is an exploded perspective view of another angle of the first preferred embodiment of the present invention.
  • Figure 4 is a further exploded perspective view of the first preferred embodiment of the present invention.
  • Figure 5 is a partial assembled view of a first preferred embodiment of the present invention.
  • Figure 6 is a schematic view showing the state in which the upper frame and the lower frame are opened in Figure 5;
  • Figure 7 is a schematic view showing the state of use of the first preferred embodiment of the present invention.
  • Figure 8 is an enlarged schematic view showing the upper frame and the lower frame in the first preferred embodiment of the present invention.
  • Figure 9 is a cross-sectional view showing a first preferred embodiment of the present invention.
  • Figure 10 is a partially assembled perspective view of a second preferred embodiment of the present invention.
  • Figure 11 is a partially assembled perspective view of a third preferred embodiment of the present invention.
  • FIG. 1 to FIG. 9 show a specific structure of the first preferred embodiment of the present invention, including a PCB board 10 , a base 20 , a static contact piece 30 , a support piece 40 , and a movable contact piece 50 .
  • the LED board 11 is disposed on the PCB board 10.
  • the base body 20 is disposed on the PCB board 10.
  • the base body 20 is provided with a notch 21, and the LED lamp 11 is located in the notch 21.
  • the static contact piece 30 and the support piece 40 are separately disposed on the base body 20, and the static contact piece 30 has a first welding leg 31 and a static contact 32.
  • the support piece 40 has a second welding leg 41, and the second welding leg 41 and the first soldering leg 31 both extend outside the base 20 to be soldered to the PCB board 10 for electrical connection.
  • One end of the movable contact piece 50 is in electrical contact with the support piece 40.
  • the other end of the movable contact piece 50 has a movable contact 51, and the movable contact 51 is located above the static contact 32.
  • the upper frame 70 and the lower frame 60 cross each other and can be pivotally connected together.
  • the lower end of the upper frame 70 and the lower end of the lower frame 60 are respectively pivotally connected to the two ends of the base 20, and the upper and lower frames of the upper frame 70 are respectively
  • the upper end of the 60 is pivotally connected to the bottom ends of the key cap 80, and the upper frame 70 and the lower frame 60 form an X-shaped structure to move the movable contact 50.
  • the contact 51 is in electrical contact with the stationary contact 32, and the movable contact 50 is disposed on the elastic member 90 that causes the movable contact 50 to be reset such that the movable contact 51 leaves the stationary contact 32.
  • the lower frame 60 and the upper frame 70 are both U-shaped, and the lower frame 60 includes a first cross bar 61 and two first links 62, two of the first cross bars 61
  • the first pivoting shaft 63 is pivotally connected to the keycap 80.
  • the two first connecting rods 62 are parallel to each other and integrally connected with the two ends of the first crossbar 61.
  • the second pivot shaft 64 extends from the inner side of the tail end of the two first links 62, and the second pivot shaft 64 is pivotally connected to the base 20;
  • the upper frame 70 includes a second crossbar 71 and two second The connecting rod 72, the two ends of the second crossbar 71 extend outwardly from the third pivoting shaft 73, and the third pivoting shaft 73 is pivotally connected to the keycap 80.
  • the two second connecting rods 72 are parallel to each other and respectively The two ends of the second link 72 are integrally formed with the fourth pivot shaft 74.
  • the fourth pivot shaft 74 is pivotally connected to the base 20, and two The second link 72 is respectively located on the inner side of the two first links 62.
  • the middle portions of the two second links 72 are respectively pivotally connected to the middle portions of the two first links 62.
  • the second link is connected.
  • the middle of the central part of the 72 extends outward with a sixth
  • the pivoting shaft 75 is correspondingly disposed with a pivoting hole 65.
  • the sixth pivoting shaft 75 is pivotally inserted into the pivoting hole 65.
  • a first insertion groove 601 is recessed in a front end surface of the first link 62, and a second insertion groove 602 is recessed in a front end of the first link 62.
  • the first half of the second link 72 is overlapped. Partially embedded in the first embedding groove 601, the second half of the second link 72 is embedded in the second embedding groove 602 to make the product thinner.
  • the base body 20 is recessed with a cavity 22, two first pivoting slots 23 and two second pivoting slots 24, and the two first pivoting slots 23 and the two second pivoting slots 24 are distributed on the surface of the base 20.
  • the second pivoting shaft 64 and the fourth pivoting shaft 74 are respectively engaged in the first pivoting slot 23 and the second pivoting slot 24, and the base 20 is disposed on the four corners.
  • the cover 10 ′ is disposed in the first pivoting slot 23 and the second pivoting slot 24 respectively corresponding to the second pivoting shaft 64 and the fourth pivoting axle 74 , and the movable contact 50 is embedded in the concave
  • the cavity 22 is located below the upper cover 10'.
  • the two opposite side plates of the upper cover 10 ′ are respectively provided with a buckle hole 11 ′.
  • the base body 20 is provided with a buckle portion 25 , and the buckle portion 25 and the buckle hole 11 ′ are fastened to each other, so that the upper portion is realized.
  • the cover 10' is mounted on the base 20, and the top end of the support piece 40 has a positioning portion 42.
  • the upper cover 10' is provided with a positioning hole 12', the positioning portion 42 is inserted into the positioning hole 12', and the upper portion
  • the two side plates of the cover 10' also extend with pins 13' which are inserted into the PCB board 10 for soldering.
  • the bottom of the key cap 80 is provided with a third pivoting slot 81 and a fourth pivoting slot 82.
  • the first pivoting shaft 63 and the third pivoting shaft 73 respectively engage with the third pivoting slot 81 and The fourth pivoting slot 82 is pivotally connected.
  • the elastic member 90 is a tension spring, and the tension spring exposes the upper cover 10'.
  • the two ends of the tension spring have a first hook portion 91 and a second hook portion 92, and the second frame portion
  • the crossbar 71 is provided with a first hanging hole 701.
  • the first hook portion 91 is fastened with the first hanging hole 701.
  • the movable contact piece 50 is provided with a second hanging hole 52.
  • the second hook portion 92 is connected to the second hook portion 92. Hole 52 is buckled.
  • the seat body 20 is embedded in the aforementioned X-shaped structure to make the product smaller in size.
  • the static contact piece 30 and the support piece 40 are respectively placed from the top to the bottom of the socket 20 at corresponding positions. Then, the movable contact piece 50 is placed in the cavity 22, and the movable contact piece 50 is supported by the support.
  • the upper frame 70 and the lower frame 60 are pivotally connected to each other, and the second pivoting shaft 64 and the fourth pivoting shaft 74 are respectively engaged with the first pivoting slot 23 and the second pivoting shaft.
  • the first hook portion 91 of the tension spring is hooked with the first hanging hole 701
  • the second hook portion 92 of the tension spring is hooked with the second hanging hole 52
  • the upper cover 10' is fastened to the base 20 from the top, and then the keycap 80 is assembled, so that the first pivoting shaft 63 and the third pivoting shaft 73 are respectively engaged with the third pivoting slot 81 and the fourth.
  • the pivoting groove 82 can be pivoted.
  • the upper frame 70 and the lower frame 60 are moved downward to be stacked together, and at the same time, the elastic member 90 is stretched, and the movable contact 50 is moved downward to make the movable contact 51 is in electrical contact with the stationary contact 32; when the keycap 80 is released, the elastic member 90 is restored to deformation, and under the action of the elastic member 90, the upper frame 70 and the lower frame 60 are opened upward, and the key cap 80 is upwardly reset.
  • the movable contact piece 50 is also reset upward so that the movable contact 51 leaves the stationary contact 32.
  • FIG. 10 shows a specific structure of the second preferred embodiment of the present invention.
  • the specific structure of the present embodiment is basically the same as the specific structure of the foregoing first preferred embodiment, and the difference is:
  • the elastic member 90 is a spring piece, and is integrally formed on the movable contact piece 50.
  • the movable contact piece 50 is mounted and connected to the lower frame 60.
  • the assembly process and the use method of the present embodiment are the same as those of the foregoing first preferred embodiment.
  • the assembly process and the use method of the present embodiment are not described in detail herein.
  • the specific structure of the third preferred embodiment of the present invention is shown.
  • the specific structure of this embodiment is basically the same as the specific structure of the foregoing first preferred embodiment, and the difference is:
  • the base 20 is located below the X-shaped structure, and both the upper frame 70 and the lower frame 60 extend upwardly beyond the upper cover 10'.
  • the assembly process and the use method of the present embodiment are substantially the same as those of the foregoing first preferred embodiment.
  • the assembly process and the use method of the present embodiment are not described in detail herein.
  • the design focus of the present invention is to replace the traditional guide by using the upper frame and the lower frame to cross each other and being pivotally connected together, and the X-shaped structure is combined with the upper frame and the lower frame to drive the movable contact activity.
  • the form of the column makes the overall thickness of the product thinner, and the upper frame and the lower frame can be linked to move the movable contact piece regardless of the position of the finger on any position of the keycap, thereby achieving stable pressing, so that the static contact piece and the static contact piece
  • the conductive connection of the movable contact is more sensitive and the product is more convenient to use.

Landscapes

  • Push-Button Switches (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

L'invention concerne un commutateur de clavier ultra-mince. Le commutateur de clavier ultra-mince comprend un corps de base, une plaquette statique, une pièce de support, une plaquette mobile, un châssis inférieur, un châssis supérieur, et un dessus de touche. La plaquette statique et la pièce de support sont disposées sur le corps de base de manière séparée l'une par rapport à l'autre. La plaquette statique est pourvue d'une première broche de soudage et d'un contact statique. La pièce de support est pourvue d'une seconde broche de soudage. La seconde broche de soudage et la première broche de soudage font toutes deux saillie hors du corps de base. Une extrémité de la plaquette mobile est maintenue électriquement connectée à la pièce de support par mise en contact. L'autre extrémité de la plaquette mobile est pourvue d'un contact mobile et le contact mobile est situé au-dessus du contact statique. Le châssis supérieur et le châssis inférieur sont connectés l'un à l'autre de manière pivotante de manière à former une intersection l'un avec l'autre et à se chevaucher partiellement, le châssis supérieur et le châssis inférieur sont combinés pour former une structure en forme de X de façon à entraîner la plaquette mobile afin qu'elle se déplace, remplaçant ainsi les colonnes de guidage utilisées conformément à l'art antérieur, cela permettant de réduire l'épaisseur globale du produit ; en outre, quel que soit l'endroit où agit un doigt sur le dessus de touche, le châssis supérieur et le châssis inférieur peuvent être reliés l'un à l'autre de manière à entraîner la plaquette mobile afin qu'elle se déplace, une pression vers le bas stable est obtenue, la connexion conductrice entre la plaquette statique et la plaquette mobile est plus sensible, et le produit est plus commode à utiliser.
PCT/CN2015/071178 2014-07-08 2015-01-21 Commutateur de clavier ultra-mince WO2016004755A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020177001071A KR101870587B1 (ko) 2014-07-08 2015-01-21 초박형 키보드 스위치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410322216.X 2014-07-08
CN201410322216 2014-07-08

Publications (1)

Publication Number Publication Date
WO2016004755A1 true WO2016004755A1 (fr) 2016-01-14

Family

ID=52319510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/071178 WO2016004755A1 (fr) 2014-07-08 2015-01-21 Commutateur de clavier ultra-mince

Country Status (3)

Country Link
KR (1) KR101870587B1 (fr)
CN (2) CN104299828B (fr)
WO (1) WO2016004755A1 (fr)

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CN108428583A (zh) * 2018-03-27 2018-08-21 东莞市铭冠电子科技有限公司 一种剪刀脚结构的按键开关
EP3534388A4 (fr) * 2016-10-27 2020-07-01 Dongguan City Kaihua Electronics Co., Ltd Commutateur mécanique de clavier de type mince

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CN106486300B (zh) * 2015-08-27 2019-03-05 东莞市凯华电子有限公司 带x架结构的键盘开关
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CN207116248U (zh) * 2016-08-04 2018-03-16 东莞市凯华电子有限公司 一种薄型键盘开关
CN107017870B (zh) * 2016-11-17 2018-08-28 东莞市凯华电子有限公司 一种薄型光电机械式键盘开关
CN108206112B (zh) * 2016-12-16 2021-04-20 华为机器有限公司 一种按键组件、键盘及移动终端
CN107017103A (zh) * 2017-05-02 2017-08-04 苏州华之杰电讯股份有限公司 一种微动开关
CN110622270B (zh) * 2017-09-15 2021-06-29 陈�峰 一种采用薄型剪刀支撑的键装置及其剪刀脚支撑和键帽的安装方法
WO2019086152A1 (fr) * 2017-10-30 2019-05-09 Cherry Gmbh Module de touches pour clavier et clavier
CN107680861B (zh) * 2017-11-21 2019-03-19 广东虹勤通讯技术有限公司 一种按键及具有该按键的键盘
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CN110767475B (zh) * 2018-07-27 2021-11-23 群光电子(苏州)有限公司 键盘装置
CN110828219B (zh) * 2018-08-10 2022-02-25 群光电子(苏州)有限公司 键盘
CN110137016B (zh) * 2019-05-13 2024-06-14 深圳市晶泰电子有限公司 高平衡性按键及键盘
TWI699796B (zh) 2019-06-25 2020-07-21 達方電子股份有限公司 按鍵開關
CN110379661B (zh) * 2019-06-28 2022-04-15 苏州达方电子有限公司 按键开关
KR200496019Y1 (ko) * 2020-11-30 2022-10-13 동관 카이후아 일렉트로닉스 코., 엘티디. 누름 평형 작용을 구비하는 버튼 스위치
US11923159B2 (en) 2021-12-16 2024-03-05 Darfon Electronics Corp. Keyswitch structure and keycap support mechanism thereof
US11978598B2 (en) 2021-12-16 2024-05-07 Darfon Electronics Corp. Keyswitch structure and lift mechanism thereof
US12080492B2 (en) 2021-12-16 2024-09-03 Darfon Electronics Corp. Keyswitch structure and lift mechanism thereof
TWI802498B (zh) 2021-12-16 2023-05-11 達方電子股份有限公司 按鍵結構及其升降機構

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CN104299827A (zh) 2015-01-21
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CN104299827B (zh) 2017-02-15
KR20170016982A (ko) 2017-02-14

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