CN2390235Y - Key location device for keyboard - Google Patents
Key location device for keyboard Download PDFInfo
- Publication number
- CN2390235Y CN2390235Y CN 99244365 CN99244365U CN2390235Y CN 2390235 Y CN2390235 Y CN 2390235Y CN 99244365 CN99244365 CN 99244365 CN 99244365 U CN99244365 U CN 99244365U CN 2390235 Y CN2390235 Y CN 2390235Y
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- China
- Prior art keywords
- circuit board
- printed circuit
- keyboard
- pcb
- movable axis
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a positioning device for keyboard keys, which comprises a base, a printed circuit board which is attached to the base and is convexly provided with a plurality of groups of pivoted sections which are used for enclosing a plurality of assemble regions, a set of bridges which are arranged in the assemble regions, an elastic body which is matched with and is arranged on the bridge and a set of key caps which are arranged on the elastic body and are connected with a positioning shaft arranged at the end part of the bridge, wherein the end of the bridge is provided with a sliding shaft which is coaxially connected with the pivoted sections. Through the adoption of the components, a waterproof keyboard which can lower manufacture cost and can effectively reduce the thickness of a keyboard can be formed.
Description
The utility model relates to a kind of structure-improved of button, particularly relate to a kind of bridge formation and directly connect to set and be positioned on the printed circuit board (PCB), can reduce cost of manufacture and effectively reduce keyboard thickness and have the keyboard locating device of waterproof effect to constitute one by button.
As shown in Figure 1, present existing keyboard structure, it comprises: a keycap, an elastic body, one is set up in this elastomeric bridge formation, a winding plate by the plastic cement injection moulding, a diaphragm type circuit plate and be arranged in base under it etc.Wherein, impact briquetting has the articulated section that articulates bridge formation on this winding plate, and so as to being articulated with the movable axis of building bridge respectively, the winding keycap is promptly finished an existing key board unit on this is built bridge again at last.
See also shown in Figure 2ly, be the keyboard structure of another kind of pattern, this kind keyboard is by a keycap, an elastic body, and one builds bridge, and a diaphragm type circuit plate and a base constitute.The surperficial impact briquetting of this base has a plurality of in order to articulate the articulated section of building bridge; During assembling, at first stack the diaphragm type printed circuit board (PCB) on this base, then again elastic body is set firmly the location, utilize the movable axis of aforementioned articulated section and bridge formation to be articulated again, the winding keycap is promptly finished another existing key board unit on this is built bridge again at last.
Can summarize following defective by above-mentioned existing two key board units:
One, two keyboard structures articulate for cooperating to build bridge, must be on winding plate or base impact briquetting go out the plural articulated section of certain altitude, except that the thickness that causes keyboard also increases thereupon, more time-consuming and cost of manufacture is high because of the punching press program, and cause the puzzlement that present keyboard industry can't technological breakthrough.
Two, because base is to be metal rigid body, make to be necessary for and build bridge when articulating than rubber-like, often cause movable axis bending distortion or fracture damage, cause the problem of the manufacturing cost wasting of resources.
Three, keyboard is under the push action of long-time button, make that the mutual friction in the articulated section of the movable axis of this bridge formation and metal base is frequent, cause the generation of iron filings easily and very easily therefore fall between the circuit board that transmits signal, and then cause the abnormal action of this circuit board, severe patient more to cause the short circuit of this circuit board to damage.
Four, because two layer printed circuit boards and a dielectric spacer layer of above-mentioned diaphragm type printed circuit board (PCB) only stack setting, any sealing is not arranged therebetween, when often causing elastic body extruded by button downwards, if the user splashes into water droplet in keyboard the time accidentally, when elastic body by the recovering state that presses down during to initial state, suck in the interlayer of this circuit board producing aqueous vapor that pull of vacuum makes the keyboard that splashes into slit, cause printed circuit board (PCB) generation problem of short-circuit via circuit board.
Because the defective that above-mentioned existing keyboard exists, the design people is based on abundant practical experience and professional knowledge, actively studied innovation, through constantly research, design, and after studying sample and improvement repeatedly, utilize on the printed circuit board (PCB) directly that extrusion modling goes out the articulated section that articulates for the movable axis of building bridge, can reduce cost of manufacture and effectively reduce keyboard thickness and have the keyboard of water-proof function to provide one, more to meet the industrial economy benefit.
Fundamental purpose of the present utility model is to provide a kind of keyboard locating device, make it utilize the articulated section that extrusion modling goes out to supply the movable axis of bridge formation to articulate on the printed circuit board (PCB), except that the high cost of manufacture and complicated production process of improving above-mentioned winding plate or base plate impact briquetting structure, more effective reduction keyboard thickness.
Another purpose of the present utility model is to provide a kind of keyboard locating device, make its printed circuit board (PCB) and on the articulated section be and have elastic material and make, the formation material of no matter building bridge is rigidity or has elasticity, all can not cause movable axis bending distortion or phenomenon of rupture to take place during joint.And keyboard is pushed for a long time and is not also had similar iron filings with electric conductivity and fall to circuit board, prevents that effectively the circuit board short circuit facts from taking place.
A purpose more of the present utility model is to provide the keyboard locating device, and the layer printed circuit board of its printed circuit board (PCB) and an insulation course are to utilize the binder gummed, can effectively completely cut off aqueous vapor and enter inside, have water resistance, can prolong the serviceable life of keyboard.
The purpose of this utility model is realized by following technical scheme.According to the keyboard locating device that the utility model proposes, it comprises a pedestal, one is attached at the printed circuit board (PCB) on the aforementioned pedestal, one is provided with locating shaft and the bridge formation of the movable axis that is coupling with this printed circuit board (PCB) in end parts, one is disposed at the elastic body on the aforementioned bridge formation, and one be mounted on the elastic body and be coupling the keycap established to constitute a keyboard with the location of this bridge formation, it is characterized in that: convex with articulated section that the movable axis 3 of plural groups and bridge formation is coupling on the above-mentioned printed circuit board (PCB) and surround plural number with definition and meet the winding district that establishes bridge formation, can reduce cost of manufacture and effectively reduce the keyboard of keyboard thickness and tool waterproof so as to constituting one.
The purpose of this utility model can also further realize by following technical measures.
Aforesaid keyboard locating device, wherein this printed circuit board (PCB) comprises that one first layer printed circuit board, one second layer printed circuit board and are layed in the dielectric spacer layer of aforementioned first and second P.e.c. interlayer.
Aforesaid keyboard locating device, the wherein said articulated section of respectively organizing is to cut out the different length lamellar body goes out two kinds of different inner diameters with extrusion modling pivoted hole by a different length cutting line respectively on printed circuit board (PCB), one end movable axis of bridge formation is hubbed in a pair of pivoted hole of less internal diameter, the other end movable axis is hubbed at than another of large diameter to pivoted hole, to move with respect to the aforesaid end movable axis.
Aforesaid keyboard locating device, wherein said articulated section are to push moulding again by borrowing cutting line to cut out lamellar body on first layer printed circuit board.
Aforesaid keyboard locating device, wherein said articulated section are to borrow cutting line to cut out lamellar body jointly by first layer printed circuit board, second layer printed circuit board and dielectric spacer layer to push moulding again.
Aforesaid keyboard locating device, wherein said lamellar body are to make pivoted hole by the extrusion forming technology of heat treated, ultrasonic, oil pressure moulding or the equal effect of tool.
The utility model compared with prior art has tangible advantage and good effect.By above technical scheme as can be known, the utility model keyboard locating device is by above-mentioned each member, constitute one and can reduce cost of manufacture and effective keyboard that reduces keyboard thickness and have water-proof function, can effectively completely cut off aqueous vapor and enter inside, have water resistance, can prolong the serviceable life of keyboard.
In sum, the utility model keyboard locating device, no matter structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is the existing keyboard structure synoptic diagram;
Fig. 2 is the structural representation of another existing keyboard;
Fig. 3 is a keyboard structure exploded perspective view of the present utility model;
Fig. 4 is the exploded view of printed circuit board (PCB) of the present utility model before processing;
Fig. 5 is the constitutional diagram of printed circuit board (PCB) of the present utility model after processing;
Fig. 6 is the air duct synoptic diagram in the printed circuit board (PCB) of the present utility model;
Fig. 7 is the sectional view behind the A-A position grouping among Fig. 3;
Fig. 8 is the button pressed action synoptic diagram of Fig. 7;
Fig. 9 is the section constitutional diagram of another embodiment of the utility model.
Below in conjunction with accompanying drawing and preferred embodiment, to according to the keyboard locating device that the utility model proposes, its concrete structure, feature and effect thereof, describe in detail as after.
Seeing also Fig. 3, shown in Figure 7, is exploded perspective view of the present utility model and section constitutional diagram; The utility model comprises the pedestal 5 that a metal or hard plastic cement material are made, one utilizes binder to be attached at also convexes with plural groups articulated section 40 surrounds plural winding district 47 with definition printed circuit board (PCB) 4 thereon on the aforementioned pedestal 5, one is mounted on and is provided with the movable axis 302 that is coupling with aforementioned articulated section 40 in the winding district 47 of above-mentioned printed circuit board (PCB) 4 and in the end, 302 ' bridge formation 3, one is mounted on the elastic body 2 on the above-mentioned bridge formation 3, one is mounted on the elastic body 2 and connects the keycap of establishing 1 with the 3 end locating shafts 301 of building bridge, and constitutes a keyboard that can reduce cost of manufacture and effectively reduce keyboard thickness and have water resistance by above-mentioned each member.
Above-mentioned printed circuit board (PCB) 4 is a kind of diaphragm type printed circuit board (PCB)s 4 (Membrane), the printed circuit board (PCB) 4 that more often uses with industrial community now illustrates, it includes one first layer printed circuit board 41, one second layer printed circuit board 42 and one is layed in aforementioned first layer printed circuit board 41, the dielectric spacer layer 43 that second layer printed circuit board is 42, this dielectric spacer layer 43 is to can be the mylar printing to make, or can directly lay formation for binder because of the design in contact loop is different, right this belongs to prior art, do not repeat them here, be to be that the mylar printing is made as the embodiment explanation in the present embodiment with dielectric spacer layer 43, wherein, as shown in Figure 4, aforementioned first layer printed circuit board 41, be respectively equipped with on second layer printed circuit board 42 and the symmetrical a plurality of contacts 46 of keyboard quantity and position, 46 ', and on dielectric spacer layer 43, also has corresponding aforementioned first layer printed circuit board 41, the contact 46 of one second layer printed circuit board 42,46 ' set a plurality of through holes 431, and above-mentioned articulated section 40 is by first layer printed circuit board 41, one second layer printed circuit board 42 and dielectric spacer layer 43 utilize cut-off knife to cut with two cutting lines 403 jointly and define lamellar body 404 extrusion modling again, the extrusion forming technology of aforementioned lamellar body 404 is to borrow heat treated, ultrasound wave, oil pressure moulding or the technology with equal effect are made pivoted hole 401,402, in addition, this group of articulated section 40 is to cut out lamellar body 404 goes out two kinds of different inner diameters with extrusion modling pivoted hole 401 by predetermined different length cutting line 403 respectively on printed circuit board (PCB) 4,402 and definition surrounds a winding district 47, one end movable axis 302 of bridge formation 3 is hubbed in the pivoted hole 401 of less internal diameter, the other end movable axis 302 ' is hubbed at than another pivoted hole 402 of large diameter and can moves with respect to the other end movable axis 302 ', owing to be suitable for the manner of execution difference of bridge formation 3, pivoted hole 401,402 internal diameter size then need cooperate adjustment, that is two pivoted holes 401,402 internal diameter size also may be identical.
See also Fig. 4, shown in Figure 5 again; This first layer printed circuit board 41, between the dielectric spacer layer 43 and second layer printed circuit board 42, it is the structure of utilizing printing to bind, remove between the contact 46 and contact 46 ' of first layer printed circuit board 41, and the predeterminable area of going ahead of the rest between the contact 46 of this second layer printed circuit board 42 and the contact 46 ' does not give the gluing bonding, make this printed circuit board (PCB) 4 when printing is binded, promptly form one and allow that air is therebetween outside the flow air passage 44 (as shown in Figure 6), with this first layer printed circuit board 41, the dielectric spacer layer 43 and second layer printed circuit board 42 are sealed combination, enter so as to effectively preventing aqueous vapor; And after printed circuit board (PCB) 4 sealing combinations, can be equipped with a plurality of low louvres 45 of heat drop that supply actuation of keys and the transmission of printed circuit board (PCB) 4 signals to be produced in the both sides of air duct 44.
Please consult shown in Figure 3 again, utilizing binder to bind the above-mentioned molded printed circuit board (PCB) 4 that goes out plural groups articulated section 40 and louvre 45 is attached on the pedestal 5, one end movable axis 302 of bridge formation 3 is hubbed in the pivoted hole 401 of less internal diameter, the other end movable axis 302 ' is hubbed at the pivoted hole 402 than large diameter, again elastic body 2 is disposed on the bridge formation 3, at this moment, be unlikely the action hour offset for strengthening elastic body 2 location, contact 46 that can be on printed circuit board (PCB), 46 ' prints or the coating binder on every side in advance, being able to its bottom bonding when making elastic body 36 configurations is fixed thereon, or on keycap 1 the default bonding land that can engage elastic body 2 tops, location (can be and bind or mode such as snapping), after making elastic body 2 location, again keycap 1 is arranged on the elastic body 2 and and fixes with locating shaft 301 windings of 3 upper ends of building bridge, constitute a keyboard in this way, as Fig. 7, shown in Figure 8, when button pressed, an end movable axis 302 of 3 is hubbed in the pivoted hole 401 of less internal diameter owing to build bridge, make the other end movable axis 302 ' of bridge formation 3 to move with respect to aforesaid end movable axis 302 in another pivoted hole 402 than large diameter, and then drive elastic body 2 presses down, the through hole that the contact 46 that makes protuberance 21 action downwards of elastic body 2 inside touch first layer printed circuit board 41 of printed circuit board (PCB) 4 with pressure sees through dielectric spacer layer 43 touches the contact 46 of second layer printed circuit board 42 and conducting, to transfer out the signal that button is pushed.
The 3 material differences of building bridge for cooperating, can earlier printed circuit board (PCB) 4 be borrowed its be elastic material make and bendable moving with 3 windings of building bridge after be bonding on again on the pedestal 5, to meet industry production process demand.
See also shown in Figure 9ly, be the section constitutional diagram of another embodiment of the present utility model; Wherein respectively organize articulated section 40 also can by borrow on first layer printed circuit board 41 cutting line 403 cut out lamellar body 404 push again mold pivoted hole 401,402 after, bind with dielectric spacer layer 43 and 42 printings of second layer printed circuit board again, its winding mode and embodiment below repeat no more as mentioned above.
Claims (6)
1. keyboard locating device, it comprises that a pedestal (5), is attached at printed circuit board (PCB) (4) on the pedestal (5), and is provided with locating shaft (301) and the bridge formation (3), of the movable axis (302,302 ') that is coupling with this printed circuit board (PCB) (4) is disposed at that elastic body (2) and on the aforementioned bridge formation (3) is mounted on that elastic body (2) is gone up and connect the keycap of establishing (1) with the locating shaft (301) of build bridge (3) constitutes a keyboard in end parts, it is characterized in that:
Convexing with articulated section (40) that the movable axis (302,302 ') of plural groups and bridge formation (3) is coupling on the above-mentioned printed circuit board (PCB) (4) surrounds plural number with definition and meets the winding district (47) that establishes bridge formation (3).
2. keyboard locating device according to claim 1 is characterized in that described printed circuit board (PCB) (4) comprises that one first layer printed circuit board (41), one second layer printed circuit board (42) and are layed in the dielectric spacer layer (43) between first layer printed circuit board (41), second layer printed circuit board (42).
3. keyboard locating device according to claim 1, it is characterized in that the described articulated section (40) of respectively organizing is to cut out different length lamellar body (404) goes out two kinds of different inner diameters with extrusion modling pivoted hole (401 by a different length cutting line (403) respectively on printed circuit board (PCB) (4), 402 '), one end movable axis (302 of bridge formation (3), 302 ') be hubbed at a pair of pivoted hole (401 of less internal diameter, 402) in, the other end movable axis (302 of bridge formation (3), 302 ') be hubbed at than another of large diameter pivoted hole (401,402), and with respect to aforesaid end movable axis (302,302 ') action.
4. keyboard locating device according to claim 2 is characterized in that described articulated section (40) is upward to borrow cutting line (403) to cut out lamellar body (404) by first layer printed circuit board (41) to push moulding again.
5. keyboard locating device according to claim 2 is characterized in that described articulated section (40) is to borrow cutting line (403) to cut out lamellar body (404) jointly by first layer printed circuit board (41), second layer printed circuit board (42) and dielectric spacer layer (43) to push moulding again.
6. keyboard locating device according to claim 3 is characterized in that described lamellar body (404) is to make pivoted hole (401,402) by the technology of heat treated, ultrasonic, oil pressure moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244365 CN2390235Y (en) | 1999-09-10 | 1999-09-10 | Key location device for keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244365 CN2390235Y (en) | 1999-09-10 | 1999-09-10 | Key location device for keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2390235Y true CN2390235Y (en) | 2000-08-02 |
Family
ID=34030474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99244365 Expired - Fee Related CN2390235Y (en) | 1999-09-10 | 1999-09-10 | Key location device for keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2390235Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663618B (en) * | 2018-04-25 | 2019-06-21 | 達方電子股份有限公司 | Keyswitch structure and return force mechanism thereof |
| TWI663619B (en) * | 2018-05-24 | 2019-06-21 | 達方電子股份有限公司 | Keyswitch structure and lift mechanism thereof |
-
1999
- 1999-09-10 CN CN 99244365 patent/CN2390235Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663618B (en) * | 2018-04-25 | 2019-06-21 | 達方電子股份有限公司 | Keyswitch structure and return force mechanism thereof |
| TWI663619B (en) * | 2018-05-24 | 2019-06-21 | 達方電子股份有限公司 | Keyswitch structure and lift mechanism thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |