CN204392223U - Direct capacitance mechanical axis switch and mechanical keyboard - Google Patents
Direct capacitance mechanical axis switch and mechanical keyboard Download PDFInfo
- Publication number
- CN204392223U CN204392223U CN201420728977.0U CN201420728977U CN204392223U CN 204392223 U CN204392223 U CN 204392223U CN 201420728977 U CN201420728977 U CN 201420728977U CN 204392223 U CN204392223 U CN 204392223U
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- mechanical
- direct capacitance
- base
- mechanical axis
- electrode
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Abstract
The utility model discloses and to provide a kind of technics comparing simple, production cost is low, stroke is long, sense of touch is more stable, wear rate is smaller, contact stabilization is good, the direct capacitance mechanical axis switch of long service life and mechanical keyboard, described mechanical keyboard comprises bottom, middle plate, upper cover, direct capacitance mechanical axis switch, wiring board and capacitive-type detection chip, described direct capacitance mechanical axis switch comprises base (1), be arranged on the spring (2) on described base (1), pressing spring the movable axis (3) be slidably matched with described base (1), push down described movable axis (3) and the upper casing (4) suitable with described base (1) and the fixed electrode (6) be arranged on described base (1) and float electrode (7), be positioned at the insulating medium layer (8) between described fixed electrode (6) and described float electrode (7), elastic arm (71) in described float electrode (7) contacts with the pusher dog tapered ramp (31) of described movable axis (3).
Description
Technical field
The utility model relates to a kind of direct capacitance mechanical axis switch and mechanical keyboard.
Background technology
According to the operation principle of keyboard and the difference of key mode, can be divided into four kinds: 1, mechanical keyboard, adopt metalloid touch switch, operation principle is that contact is turned on or off, and has that technique is simple, noise large, the feature of easy care; 2, conductive rubber formula keyboard, the structure of contact is connected by conductive rubber, and keyboard has the protruding charged conductive rubber of one deck, the corresponding projection of each button, contacting below when pressing, this keyboard is that market is by the transitional product of mechanical keyboard to membrane keyboard; 3, Plastic Diaphragm Type Servomotor keyboard, keyboard is divided into three layers, and achieve mechanical wearing and tearing, be characterized in low price, low noise and low cost, dominated the market most share; 4, contactless electrostatic capacitive keyboard, feature is without wearing and tearing and sealing is better, capacitance keyboard is the keyboard based on capacitance-type switch, principle is the change being produced capacitance by the interelectrode distance of key change, the temporary transient condition forming concussion pulse and allow to pass through, this switch is contactless contactless, wear rate is minimum even negligible, the hidden danger of loose contact is not had yet, there is noise little, easy control feel, can produce high-quality keyboard, the feature of long service life.In addition, along with the development of computer, the update of computer software with constantly upgrade, become people with computer Entertainment and use the requisite project of computer, in present most computer game, brisk and neat, feel fast that computer user is pursued typewriting, played games, all reach requirement by the keyboard feel of mechanical shaft type to keyboard, so mechanical axis switchboards is the first-selected keyboard of computer game player.But two electrodes of existing mechanical axis switch use hard contact frictional contact, it is the current lead-through mode of resistance-type, so not only need adopt valuable metallic gold or silver (contact performance is well stablized) and cause product price higher, and electroplating technique is relative with difficulty higher on two touch screens, importantly, hard contact in use needs CONTACT WITH FRICTION repeatedly, so can because of contact deflection, oxidation causes loose contact, a contact bad, a keyboard is just caused to be bad product, the security reliability of this traditional mechanical axis and life-span just beat take-off greatly, more current manufacturers cause the return of goods in enormous quantities with regard to factors such as or product contact instability long because of useful life.
Utility model content
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, provides that a kind of technics comparing is simple, production cost is low, stroke is long, sense of touch is more stable, wear rate is smaller, contact stabilization is good, the direct capacitance mechanical axis switch of long service life and mechanical keyboard.
The technical scheme that a kind of direct capacitance of the utility model mechanical axis switch adopts is: described direct capacitance mechanical axis switch comprises the base set gradually from top to bottom, be arranged on the spring on described base, pressing spring the movable axis coordinated with described base sliding, push down described movable axis and the upper casing suitable with described base and the fixed electrode be arranged on described base and float electrode, insulating medium layer between described fixed electrode and described float electrode, elastic arm in described float electrode contacts with the pusher dog tapered ramp of described movable axis, described float electrode and described fixed electrode away from or close to the change output switching signal causing capacitance, realize switching function.
Described insulating medium layer can be the one in solid or liquid or gas, and described insulating medium layer is arranged in described fixed electrode or described float electrode or described fixed electrode and described float electrode.
Described direct capacitance mechanical axis switch also comprises emitting led, is describedly emitting ledly fixed on described upper casing, and its leg is through described base, and described base and described upper casing are clasped as a whole mechanical switch axle.
The technical scheme that a kind of mechanical keyboard of the utility model adopts is: the wiring board that described mechanical keyboard comprises capacitive-type detection chip and is electrically connected with described capacitive-type detection chip, described wiring board is provided with matrix circuit, and described matrix circuit is electrically connected with described capacitive-type detection chip.
Described mechanical keyboard also comprises bottom, be arranged on plate during described bottom is connected with described bottom, be arranged on upper cover above described middle plate and suitable with described bottom, cover on described and be provided with several Buddha's warrior attendants cover and buckle is arranged on the keycap that described Buddha's warrior attendant puts, described wiring board is arranged between described bottom and described middle plate, described in several, the equal buckle of direct capacitance mechanical axis switch is arranged on described middle plate, the top of described direct capacitance mechanical axis switch contacts with described keycap, the leg of described fixed electrode and described float electrode passes described middle plate and is welded and fixed with described wiring board.
Described bottom is provided with screw, and described screw is threaded with described middle plate through described bottom.
The beneficial effects of the utility model are: comprise because the utility model comprises described direct capacitance mechanical axis switch the base set gradually from top to bottom, be arranged on the spring on described base, pressing spring the movable axis coordinated with described base sliding, push down described movable axis and the upper casing suitable with described base and the fixed electrode be arranged on described base and float electrode, insulating medium layer between described fixed electrode and described float electrode, elastic arm in described float electrode contacts with the pusher dog tapered ramp of described movable axis, described float electrode and described fixed electrode away from or close to the change output switching signal causing capacitance, realize switching function, this structure detects by capacitive-type detection chip, when there being button to press, described movable axis slide downward, thus the distance between described float electrode and described fixed electrode can be changed, cause described float electrode away from or close to fixed electrode, two electrodes away from or close to causing the change output switching signal of capacitance, realize switching function, described insulating medium layer is had to prevent two electrodes from colliding between two electrodes, CONTACT WITH FRICTION is not had between two electrodes, electric current is not had to pass through, compared with prior art, solder joint is carried out without the need to adopting expensive metallic gold or silver, the technique of solder joint is also eliminated while reducing production cost, and, the advantage of mechanical keyboard and electric capacity keyboard can be combined, importantly, compared with existing machinery formula keyboard, greatly improve product useful life, so electrical property is safe and reliable, tens times or hundred times touch potential can be brought up to from touch potential in the past, life-span can reach 5,000 ten thousand, so the utility model technics comparing is simple, production cost is low, stroke is long, sense of touch is more stable, wear rate is smaller, contact stabilization is good, long service life.
Accompanying drawing explanation
Fig. 1 is the explosive view of the utility model direct capacitance mechanical axis switch;
Fig. 2 is the structural representation of the utility model direct capacitance mechanical axis switch initial condition;
Fig. 3 is the structural representation of the utility model direct capacitance mechanical axis switch down state;
Fig. 4 is theory diagram of the present utility model;
Fig. 5 is flow chart of the present utility model.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, mechanical keyboard described in the utility model comprises bottom, be arranged on plate during described bottom is connected with described bottom, be arranged on upper cover above described middle plate and suitable with described bottom, capacitive-type detection chip and the wiring board be electrically connected with described capacitive-type detection chip, cover on described and be provided with several Buddha's warrior attendants cover and buckle is arranged on the keycap that described Buddha's warrior attendant puts, described wiring board is arranged between described bottom and described middle plate, described in several, the equal buckle of direct capacitance mechanical axis switch is arranged on described middle plate, the top of described direct capacitance mechanical axis switch contacts with described keycap, described wiring board is provided with matrix circuit, described matrix circuit is electrically connected with described capacitive-type detection chip, described direct capacitance mechanical axis switch comprises the base 1 set gradually from top to bottom, be arranged on the spring 2 on described base 1, pressing spring the movable axis 3 be slidably matched with described base 1, push down described movable axis 3 and the upper casing 4 suitable with described base 1 and the fixed electrode 6 be arranged on described base 1 and float electrode 7, insulating medium layer 8 between described fixed electrode 6 and described float electrode 7, described insulating medium layer is arranged in described fixed electrode 6 or described float electrode 7 or described fixed electrode 6 and described float electrode 7, elastic arm 71 in described float electrode 7 contacts with the pusher dog tapered ramp 31 of described movable axis 3, described float electrode 7 and described fixed electrode 6 away from or close to the change output switching signal causing capacitance, realize switching function, the leg of described fixed electrode 6 and described float electrode 7 passes described middle plate and is welded and fixed with described wiring board, described bottom is provided with screw, described screw is threaded with described middle plate through described bottom.
Described capacitive-type detection chip comprises: electric capacity scan module, for for described wiring board connects several described in direct capacitance mechanical axis switch carry out scanning sample; Information filtering module, filters the sampled value that described electric capacity scan module collects for controlling filtering delay-time de-twitter circuit; Information discrimination module, compares the sampled value after filtration for controlling this schmitt trigger, exceedes the then transmission key information of this schmitt trigger preset maximum value described to key output module; Key output module, for receiving the key information of described information discrimination module and determining that corresponding code value is reported to main frame according to this key information.
Operation principle of the present utility model is:
A. main frame is communicated with and initialization by communication interface with main control chip;
B. the electric capacity scan module of described capacitive-type detection chip carries out scanning sample to all direct capacitance mechanical axis switches be connected on described wiring board;
C. described information filtering module filtered time delay de-twitter circuit filters the sampled value that described electric capacity scan module collects, and this filter type comprises average value filtering, IIR filtering and Jitter filtering;
D. information discrimination module control this schmitt trigger to filter after sampled value compare, exceed the then transmission key information of this schmitt trigger preset maximum value described to key output module, maximum lower than this schmitt trigger described then gets back to described step b, then sends button lift information to described main frame lower than the minimum value that this schmitt trigger described is default;
E. key output module receives the key information of described information discrimination module and determines that corresponding code value is reported to main frame according to this key information.
The utility model can be widely used in mechanical keyboard field.
Claims (6)
1. a direct capacitance mechanical axis switch, it is characterized in that: described direct capacitance mechanical axis switch comprises the base (1) set gradually from top to bottom, be arranged on the spring (2) on described base (1), pressing spring the movable axis (3) be slidably matched with described base (1), push down described movable axis (3) and the upper casing (4) suitable with described base (1) and the fixed electrode (6) be arranged on described base (1) and float electrode (7), be positioned at the insulating medium layer (8) between described fixed electrode (6) and described float electrode (7), elastic arm (71) in described float electrode (7) contacts with the pusher dog tapered ramp (31) of described movable axis (3), described float electrode (7) and described fixed electrode (6) away from or close to the change output switching signal causing capacitance, realize switching function.
2. direct capacitance mechanical axis switch according to claim 1, it is characterized in that: described insulating medium layer (8) can be the one in solid or liquid or gas, and described insulating medium layer (8) is arranged in described fixed electrode (6) and/or described float electrode (7).
3. direct capacitance mechanical axis switch according to claim 1, it is characterized in that: described direct capacitance mechanical axis switch also comprises emitting led (5), described emitting led (5) are fixed on described upper casing (4), its leg is through described base (1), and described base (1) and described upper casing (4) are clasped as a whole mechanical switch axle.
4. one kind comprises the mechanical keyboard of direct capacitance mechanical axis switch described in claim 1, it is characterized in that: the wiring board that described mechanical keyboard also comprises capacitive-type detection chip and is electrically connected with described capacitive-type detection chip, described wiring board is provided with matrix circuit, and described matrix circuit is electrically connected with described capacitive-type detection chip.
5. mechanical keyboard according to claim 4, it is characterized in that: described mechanical keyboard also comprises bottom, be arranged on plate during described bottom is connected with described bottom, be arranged on upper cover above described middle plate and suitable with described bottom, cover on described and be provided with several Buddha's warrior attendants cover and buckle is arranged on the keycap that described Buddha's warrior attendant puts, described wiring board is arranged between described bottom and described middle plate, described in several, the equal buckle of direct capacitance mechanical axis switch is arranged on described middle plate, the top of described direct capacitance mechanical axis switch contacts with described keycap, the leg of described fixed electrode (6) and described float electrode (7) passes described middle plate and is welded and fixed with described wiring board.
6. mechanical keyboard according to claim 5, is characterized in that: described bottom is provided with screw, and described screw is threaded with described middle plate through described bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728977.0U CN204392223U (en) | 2014-11-28 | 2014-11-28 | Direct capacitance mechanical axis switch and mechanical keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728977.0U CN204392223U (en) | 2014-11-28 | 2014-11-28 | Direct capacitance mechanical axis switch and mechanical keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204392223U true CN204392223U (en) | 2015-06-10 |
Family
ID=53364902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420728977.0U Withdrawn - After Issue CN204392223U (en) | 2014-11-28 | 2014-11-28 | Direct capacitance mechanical axis switch and mechanical keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204392223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410399A (en) * | 2014-11-28 | 2015-03-11 | 珠海市智迪科技有限公司 | Static-capacitive mechanical switch and mechanical keyboard |
| CN105161341A (en) * | 2015-08-12 | 2015-12-16 | 珠海市智迪科技有限公司 | Magnetic suspension button and keyboard |
| TWI686828B (en) * | 2018-08-31 | 2020-03-01 | 群光電子股份有限公司 | keyboard |
-
2014
- 2014-11-28 CN CN201420728977.0U patent/CN204392223U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410399A (en) * | 2014-11-28 | 2015-03-11 | 珠海市智迪科技有限公司 | Static-capacitive mechanical switch and mechanical keyboard |
| CN104410399B (en) * | 2014-11-28 | 2018-10-12 | 珠海市智迪科技股份有限公司 | Direct capacitance mechanical axis switchs and mechanical keyboard |
| CN105161341A (en) * | 2015-08-12 | 2015-12-16 | 珠海市智迪科技有限公司 | Magnetic suspension button and keyboard |
| TWI686828B (en) * | 2018-08-31 | 2020-03-01 | 群光電子股份有限公司 | keyboard |
| US10715141B2 (en) | 2018-08-31 | 2020-07-14 | Chicony Electronics Co., Ltd. | Capacitive keyboard keys which translate pressing input into output response speed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Jinding Tangjiawan Jinfeng Industrial Park Road 519000 Guangdong city of Zhuhai province No. 21 building two layer Patentee after: G.TECH TECHNOLOGY LTD. Address before: 519000, Jinding Industrial Park, Jinfeng West Road, Tang Wan, Zhuhai, Guangdong 21, China Patentee before: Zhuhai G.Tech Technology Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150610 Effective date of abandoning: 20181012 |