CN87202923U - Electric switch with lock - Google Patents
Electric switch with lock Download PDFInfo
- Publication number
- CN87202923U CN87202923U CN 87202923 CN87202923U CN87202923U CN 87202923 U CN87202923 U CN 87202923U CN 87202923 CN87202923 CN 87202923 CN 87202923 U CN87202923 U CN 87202923U CN 87202923 U CN87202923 U CN 87202923U
- Authority
- CN
- China
- Prior art keywords
- switch
- lock
- utility
- sheet metal
- operation range
- 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.)
- Ceased
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to an electric switch. Various load switches, knife throw switches and combination switches which are used for circuit neutralizing devices are frequently needed to be fixed on a certain operation range; if the operation range is changed due to misoperation, an accident can happen. In the utility model, a lock is added and installed in a switch; the swith can be locked on a certain operation range by a key, and the operation range can not be changed without the key. The utility model is particularly suitable for various electrical equipment and switch cabinets, and the safety of power utilization can be ensured.
Description
The utility model relates to a kind of appliance switch.
On various power consumption equipments and switch cubicle, all use appliance switch to come the disconnected of control circuit to close, industrial and mining enterprises for example, rural power irrigate and the various controller switching equipments of power lighting in use load switch, throw knife switch and be used in control threephase asynchronous on the various plant equipment and start the unit switch that stops etc.By pulling and turn the rotating shaft of switch, make contact disconnection or contact in the switch realize the disconnected purpose of closing of control circuit.In actual use, often need switch is remained on a certain position of " breaking " or " closing ", when for example overhauling circuit or electric equipment, the outage of need operating a switch, for preventing that others from mistake closing electric switch, often send the special messenger to keep an eye on electric switch or on switch, hang alarm plate, but do not only bothersome but also dangerously like this, even the accident that false switching causes injures and deaths takes place.The motor of all kinds of mines underground equipment then needs the commentaries on classics of not stopping transport, and for example water pump, blower fan are all can not stop a moment, causes shutdown in case misoperation takes place, and major accident will take place.And the various load switches that use at present, throwing knife switch and unit switch do not have other people can't change switch working state without permission performance.
The appliance switch that the utility model proposes has the function that the work gear is pinned, if think the work gear of maintained switch, avoid being subjected to pulling arbitrarily, can utilize key that switch is pinned, do not use key just can't change the work gear of locked appliance switch.
What the utility model proposes is that a sheet metal 4 is housed in the rotating shaft 3 of switch by rotating shaft with each principal character of organizing the electric control switch of forming contact (Fig. 1), sheet metal links together with rotating shaft and rotates synchronously, on sheet metal, have at least one breach, switch also is equipped with by lock core 7 and dials the lock that tongue 5 is formed in addition, and the breach on the sheet metal all has one to aim at the turned position of dialling tongue.Breach on the sheet metal is generally only done one, when switch is in the gear of " breaking ", and group tongue of the notch alignment lock on the sheet metal; When the breach of sheet metal was two, two breach angle of being separated by equaled the angle that turns over when the switch rotating shaft is pulled.When needs pin switch, utilize key 8 rotational lock cores to drive group tongue rising and put in the breach of sheet metal, when pulling rotating shaft again, group tongue just hinders sheet metal can not rotate it like this, the switch rotating shaft also can not be rotated thereupon, and original work gear of switch just can not change.If want to change the work gear of switch, must utilize key rotation lock core to drive to dial the hypogloeeis and fall, work gear that so just can operating switch rotating shaft alteration switch.
Accompanying drawing 1 is a kind of structure assembling schematic diagram of the present utility model.1 is the appliance switch contact part, and 2 is the base plate of appliance switch, and in order to the tongue of dialling of switch panel and lock to be installed, 3 is the rotating shaft of switch, and 4 for being installed in the sheet metal in the rotating shaft, and 5 for dialling tongue, and 6 is switch panel, and 7 is lock core, and 8 is key, and 9 is switch knob.
Embodiment:
A kind of HZ3 unit switch with technical characterictic described in the utility model, the thickness of the sheet metal in the rotating shaft is 1.5 millimeters, and diameter is 55 millimeters of φ, and two breach are arranged on the sheet metal, and the angle of being separated by is 60 °, and gap width is 6 millimeters.
Claims (1)
1, a kind of by rotating shaft with respectively organize the electric control switch that the contact constitutes, it is characterized in that in the rotating shaft of this switch, being equipped with a sheet metal, have at least one breach on this sheet metal, this appliance switch also is equipped with by lock core and dials the lock that tongue is formed, and the breach on the sheet metal all has one to aim at the turned position of dialling tongue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202923 CN87202923U (en) | 1987-03-23 | 1987-03-23 | Electric switch with lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202923 CN87202923U (en) | 1987-03-23 | 1987-03-23 | Electric switch with lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87202923U true CN87202923U (en) | 1988-03-23 |
Family
ID=4818980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87202923 Ceased CN87202923U (en) | 1987-03-23 | 1987-03-23 | Electric switch with lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87202923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758961A (en) * | 2012-07-23 | 2012-10-31 | 浙江大学 | Card inserting device attached on rotating type valve or switch |
-
1987
- 1987-03-23 CN CN 87202923 patent/CN87202923U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758961A (en) * | 2012-07-23 | 2012-10-31 | 浙江大学 | Card inserting device attached on rotating type valve or switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |