CN2224459Y - Keyswitch - Google Patents
Keyswitch Download PDFInfo
- Publication number
- CN2224459Y CN2224459Y CN 94221730 CN94221730U CN2224459Y CN 2224459 Y CN2224459 Y CN 2224459Y CN 94221730 CN94221730 CN 94221730 CN 94221730 U CN94221730 U CN 94221730U CN 2224459 Y CN2224459 Y CN 2224459Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- keyswitch
- housing
- shell body
- key
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a keyswitch, is composed of a shell body, a seat block, piano keyboards, a push rod, a slip gauge, a movable contact, a static contact, hinges, etc. The push rod whose travel is controlled by the slip gauge and the top post on the shell body and which is tightly matched with the piano keyboards is arranged in the guide rail of the shell body. Because the center of the movable contact is arranged on an X-shaped frame, so long as the push rod is slightly moved, and the movable contact immediately close or open the corresponding static contact. With compact structure and quick movement, the switch lightens the electric arc and the burning loss between the contacts. In addition, adopting the hinge structure, the keyswitch makes the abrasion obtain compensation. So the work is reliable, and the service life is effectively prolonged. The keyswitch can be used for various daily electrical appliances.
Description
The utility model relates to keyboard switch commonly used in a kind of household appliance.
Existing keyboard switch adopts skateboard more, change, during the switching circuit, key needs bigger displacement, and is therefore time-consuming more, even is easy to generate electric arc and burns out the contact.
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of QA keyboard switch is provided.
Technical solution of the present utility model is, a kind of keyboard switch, it is made up of housing, key, push rod, slide gauge, hinge, moving contact and fixed contact etc., move in the guide rail of housing with the push rod of key close-fitting, be contained in the hinge on the push rod, two arms are pressed on the moving contact about it, and prop up on X type frame at the moving contact center, they are contained on the saddle in the lump, and saddle is then lived and fitted on the housing.Each presses key, and push rod up or down moves, and hinge just is on the X type frame or the position under the X type frame, forces the moving contact closure or disconnects corresponding fixed contact, reaches the purpose of on-off circuit.
Described keyboard switch comprises housing (5), saddle (11), key (1), slide gauge (2), moving contact (7), fixed contact (12), hinge etc., main feature be its stroke be controlled by fore-set on slide gauge (2) and the housing (5) with key (1) in the movable guide rail that is contained in housing (5) of friction tight push rod (4), saddle (11) is lived and to be fitted on the housing (5), is contained in the left chain arm (10) on the push rod (4), right chain arm (8) is close on the moving contact (7) by compression spring (9).Key (1) is " ten " word shape with the syndeton of push rod (4).Described hinge is made up of left chain arm (10), right chain arm (8) and compression spring (9).Prop up with X type frame (6) at moving contact (7) center.
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is done detailed description.
Accompanying drawing 1 is the partial cutaway front view of present embodiment.
Accompanying drawing 2 is A-A profiles of Fig. 1.
Present embodiment is provided with housing (5), key (1), push rod (4), back-moving spring (3), slide gauge (2), moving contact (7), saddle (11), fixed contact (12) and hinge; Left side chain arm (10), right chain arm (8) and compression spring (9) etc.Push rod (4) with key (1) close-fitting moves up and down in the guide rail of housing (5), and its stroke is controlled by the fore-set on slide gauge (2) and the housing (5), and back-moving spring (3) forces push rod (4) to deviate from the direction of pressing all the time.Moving contact (7), fixed contact (12) are contained on the saddle (11) in the lump with X type frame (6), and saddle (11) is lived and fitted on the housing (5), disposes some sound contact on it on demand.The left chain arm (10) and the right chain arm (8) that are contained on the push rod (4) are close on the moving contact (7) by compression spring (9), and prop up on X type frame (6) at moving contact (7) center.
When pressing key (1), push rod (4) moves together with left and right chain arm (10), (8), as soon as left and right chain arm (10) and (8) are departed from the center line of X type frame (6) slightly, moving contact (7) is with regard to take-off, so just closed or disconnection with corresponding fixed contact, the break-make of the circuit of realization.
The utility model compact conformation, stroke is short, take-off is fast, helps avoiding the generation of electric arc and the scaling loss of contact.Other adopts linkage, and wearing and tearing are compensated, and has therefore prolonged useful life effectively.
Claims (4)
1, a kind of keyboard switch, it comprises housing (5), saddle (11), key (1), slide gauge (2), moving contact (7), fixed contact (12), hinge etc., it is characterized in that: its stroke be controlled by fore-set on slide gauge (2) and the housing (5) with key (1) in the movable guide rail that is contained in housing (5) of the push rod (4) of close-fitting body, saddle (11) is lived and to be fitted on the housing (5), is contained in the left chain arm (10) on the push rod (4), right chain arm (8) is close on the moving contact (7) by compression spring (9).
2, keyboard switch according to claim 1 is characterized in that: key (1) is " ten " word shape with the syndeton of push rod (4).
3, keyboard switch according to claim 1 is characterized in that: described hinge is made up of left chain arm (10), right chain arm (8) and compression spring (9), and this hinge is contained on the push rod (4).
4, keyboard switch according to claim 1 is characterized in that: prop up with X type frame (6) at moving contact (7) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221730 CN2224459Y (en) | 1994-09-10 | 1994-09-10 | Keyswitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221730 CN2224459Y (en) | 1994-09-10 | 1994-09-10 | Keyswitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2224459Y true CN2224459Y (en) | 1996-04-10 |
Family
ID=33835953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94221730 Expired - Fee Related CN2224459Y (en) | 1994-09-10 | 1994-09-10 | Keyswitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2224459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236365A (en) * | 2012-10-26 | 2013-08-07 | 东莞辰达电器有限公司 | Key switch convenient to assemble and manufacture |
-
1994
- 1994-09-10 CN CN 94221730 patent/CN2224459Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236365A (en) * | 2012-10-26 | 2013-08-07 | 东莞辰达电器有限公司 | Key switch convenient to assemble and manufacture |
| CN103236365B (en) * | 2012-10-26 | 2016-01-20 | 东莞辰达电器有限公司 | A kind of keyboard switch being convenient to assembling manufacturing |
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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 |