CN2646850Y - Change-over switch - Google Patents
Change-over switch Download PDFInfo
- Publication number
- CN2646850Y CN2646850Y CN 03210273 CN03210273U CN2646850Y CN 2646850 Y CN2646850 Y CN 2646850Y CN 03210273 CN03210273 CN 03210273 CN 03210273 U CN03210273 U CN 03210273U CN 2646850 Y CN2646850 Y CN 2646850Y
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- switch
- cam
- limit cam
- box cover
- 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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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses a transfer switch with a safe lid opening prevention mechanism, which comprises a box cover part and a box seat part. The box cover part comprises a box cover, a catch and a rotating shaft, while the box seat part comprises a box seat and an inner switch body. The inner switch body consists of a switch seat, a limit cam, a limit snap and a switch actuating piece. The box cover and box seat are fixedly connected by fastening bolt and the catch, rotating shaft and limit cam are respectively provided with a key slot. The catch, rotating shaft and limit cam are mutually connected by key slot, wherein the rotating shaft is provided with an annular positioning groove and a plurality of sliding snaps are arranged on the switch seat; the sliding snap is connected with a pressure spring, while the limit cam is provided with an upper cam that is provided with a projection that is mutually matched with the sliding snap.
Description
Technical field
The utility model relates to a kind of change over switch.
Background technology
Existing change over switch generally comprises box cover part and case socket part, box cover part is made up of lid, button, rotating shaft, case socket part is made up of cassette holder, interior switch body, interior switch body is made up of switch base, limit cam, spacing dop, switch motion part, lid is fixedlyed connected by trip bolt with cassette holder, button, rotating shaft, limit cam are respectively equipped with keyway, and button, rotating shaft, limit cam interconnect by keyway.But no matter interior switch body can open the lid by the trip bolt of removing between lid and the cassette holder in closure or off-state this change over switch, has unsafe factor.
Summary of the invention
The purpose of this utility model provides a kind of change over switch with the anti-cap-opening mechanism of safety.
For achieving the above object, the utility model is by the following technical solutions: a kind of change over switch, comprise box cover part and case socket part, box cover part is by lid, button, rotating shaft is formed, case socket part is by cassette holder, interior switch body is formed, interior switch body is by switch base, limit cam, spacing dop, the switch motion part is formed, lid is fixedlyed connected by trip bolt with cassette holder, button, rotating shaft, limit cam is respectively equipped with keyway, button, rotating shaft, limit cam interconnects by keyway, its shaft is provided with annular positioning groove, switch base is provided with several slip dops, the slip dop is connected to holddown spring, and limit cam is provided with the overhead cam that matches with the dop that slides.
Because adopt above-mentioned technical solution, in the time of button sense of rotation ON, switch is in "on" position, the dop that slides this moment sticks in the annular positioning groove of rotating shaft, even remove the trip bolt between lid and the cassette holder, box cover part also can't discharge; When button when ON forwards OFF to, switch is in off-position, the overhead cam of limit cam rotates the slip dop is outwards slided, the slip dop withdraws from the annular positioning groove of rotating shaft, box cover part can discharge and carry out wiring or installation this moment, therefore used safer.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of limit cam in the utility model.
Embodiment
As shown in the figure, the utility model change over switch, comprise box cover part and case socket part, box cover part is by lid 3, button 1, rotating shaft 2 is formed, case socket part is by cassette holder 7, interior switch body is formed, interior switch body is by switch base 13, limit cam 6, spacing dop 10, the switch motion part is formed, the switch motion part is by action contact frame 14, moving contact 16, fixed contact 15 is formed, lid 3 and cassette holder 7 are fixedlyed connected by trip bolt, button 1, rotating shaft 2, limit cam 6 is respectively equipped with keyway, button 1, rotating shaft 2, limit cam 6 interconnects by keyway, spacing dop 10 is connected to holddown spring 11, limit cam 6 cooperates with spacing dop 10 makes rotating shaft 2 not only rotatable but also can be limited to the fixed position, limit cam 6 is provided with down cam 12, following cam 12 match with action contact frame 14 closure and disconnection between control moving contact 16 and the fixed contact 15, rotating shaft 2 is provided with annular positioning groove 8, switch base 13 is provided with symmetrical two slip dops 4, slip dop 4 is connected to holddown spring 5, limit cam 6 is provided with overhead cam 9, and overhead cam 9 is provided with two projections 18 that match with the dop 4 that slides makes slip dop 4 outwards slide with the rotation of overhead cam 9.Its operation principle is: when button 1 when OFF turns to ON, the following cam 12 of limit cam 6 rotates and makes action contact frame 14 along the end face track kick that makes progress, moving contact 16 and fixed contact 15 closures, switch is in "on" position, the overhead cam 9 of limit cam 6 rotates slip dop 4 in both sides is inwardly slided under the effect of holddown spring 5 simultaneously, both sides slip this moment dop 4 sticks in the annular positioning groove 8 of rotating shaft 2 simultaneously, even remove the trip bolt between lid 3 and the cassette holder 7, box cover part also can't discharge; When button when ON forwards OFF to, the following cam 12 of limit cam 6 rotates action contact frame 14 is pushed downwards along end face, moving contact 16 disconnects with fixed contact 15, switch is in off-position, the overhead cam 9 of limit cam 6 rotates slip dop 4 is outwards slided simultaneously, slip dop 4 withdraws from the annular positioning groove 8 of rotating shaft 2, and this moment, box cover part can discharge, thereby can carry out wiring or installation safely.
Also can be provided with on the switch base 13 in the utility model along equally distributed three the slip dops 4 of rotating shaft 2 circumferencial directions, correspondingly overhead cam 9 also is provided with three projections 18 that match with three slip dops 4, stick into simultaneously by three slip dops 4 in the circular orientation keyway 8 of rotating shaft 2, make the anti-cap-opening mechanism of safety more firm, it is more reliable to work.
Claims (3)
1, a kind of change over switch, comprise box cover part and case socket part, box cover part is by lid (3), button (1), rotating shaft (2) is formed, case socket part is by cassette holder (7), interior switch body is formed, interior switch body is by switch base (13), limit cam (6), spacing dop (10), the switch motion part is formed, lid (3) is fixedlyed connected by trip bolt with cassette holder (7), button (1), rotating shaft (2), limit cam (6) is respectively equipped with keyway, button (1), rotating shaft (2), limit cam (6) interconnects by keyway, it is characterized in that: rotating shaft (2) is provided with annular positioning groove (8), switch base (13) is provided with several slip dops (4), slip dop (4) is connected to holddown spring (5), limit cam (6) is provided with overhead cam (9), and overhead cam (9) is provided with the projection (18) that matches with the dop that slides (4).
2, change over switch according to claim 1 and 2 is characterized in that: switch base (13) is provided with symmetrical two slip dops (4).
3, change over switch according to claim 1 and 2 is characterized in that: switch base (13) is provided with along rotating shaft (2) equally distributed three the slip dops of circumferencial direction (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210273 CN2646850Y (en) | 2003-08-25 | 2003-08-25 | Change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210273 CN2646850Y (en) | 2003-08-25 | 2003-08-25 | Change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646850Y true CN2646850Y (en) | 2004-10-06 |
Family
ID=34289313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03210273 Expired - Fee Related CN2646850Y (en) | 2003-08-25 | 2003-08-25 | Change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646850Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661852B (en) * | 2008-08-29 | 2011-11-30 | 郑春开 | Three-position conversion switch |
-
2003
- 2003-08-25 CN CN 03210273 patent/CN2646850Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661852B (en) * | 2008-08-29 | 2011-11-30 | 郑春开 | Three-position conversion switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041006 Termination date: 20120825 |