CN202353193U - Open phase protective device for appliance switch - Google Patents
Open phase protective device for appliance switch Download PDFInfo
- Publication number
- CN202353193U CN202353193U CN2011205210120U CN201120521012U CN202353193U CN 202353193 U CN202353193 U CN 202353193U CN 2011205210120 U CN2011205210120 U CN 2011205210120U CN 201120521012 U CN201120521012 U CN 201120521012U CN 202353193 U CN202353193 U CN 202353193U
- Authority
- CN
- China
- Prior art keywords
- sheet metal
- fixed
- support
- protective device
- open phase
- 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 relates to an open phase protective device for an appliance switch, which includes a fixed bracket, a movable bracket, a sheet metal and a spring, wherein the I-shaped fixed bracket is made of insulating plates; two gaps are formed on the lower end surface of the fixed bracket; the sheet metal is fixed at the lower part of the fixed bracket; the two edges of the sheet metal are bent into right angles; a step pivot is arranged above the sheet metal; the two edges of the lower end of the sheet metal are bent outwards into clamp hooks, so as to clamp a switch shaft; the middle part of the sheet metal is bent inwards into a hook and provided with a hole for the spring to pass through; the movable bracket is made of insulating plates; the sheet metal is fixed on the movable bracket; and the sheet metal is bent forwards, and one step clamps the pivot above the sheet metal. The open phase protective device has the advantages of simple structure, stable performance, small volume and low cost, and can effectively protect the open phase, overload and short circuit of the circuit, the appliance and the motor.
Description
Technical field
The utility model belongs to the high and low voltage switch apparatus technology, particularly relates to a kind of appliance switch phase-lacking protective device.
Background technology
At present commercially available air switch has only the protection of overload, short circuit, does not have open-phase protection, electrical equipment occurs easily, motor burns out, even open-phase protection is arranged, and structure more complicated, unstable properties, cost height.
The utility model content
The purpose of the utility model is to overcome the defective of above-mentioned prior art, provides a kind of simple in structure, stable performance, the appliance switch phase-lacking protective device that cost is low.
The utility model is realized through following technical scheme:
The technical solution of the utility model is such, comprises that fixed support is made I shape with insulation board by fixed support, live support, sheet metal, spring; The fixed support lower surface has 2 breach, and support bracket fastened bottom is fixed with sheet metal, and the sheet metal both sides curve the right angle; The top is the step fulcrum, and there is grab on both sides, sheet metal lower end to excurvation, the chucking switch shaft; Middle inwardly bending has hook and perforate to pass spring; The support of living is made with insulation board, is fixed with sheet metal on the support of living, and sheet metal is to antecurvature and have a step to block the fulcrum of sheet metal top.
The beneficial effect of the utility model:
The utility model has the advantages that simple in structure, stable performance, volume is little, cost is low, effectively the phase shortage of protective circuit, electrical equipment, motor, overload, short circuit.The utility model can be installed in various electrical equipment, circuit, switch cubicle, knife switch use, also has independent power down function.
Description of drawings
Fig. 1 is the overall structure front view of the utility model.
Fig. 2 is the fixed support parts front view of the utility model.
Fig. 3 is the fixed support parts left view of the utility model.
Among the figure, 1 is that fixed support, 2 is that support alive, 3 is that spring, 4 is that sheet metal, 5 is that sheet metal, 6 is that a hook, 7 is that breach, 8 is a fulcrum.
Embodiment
According to accompanying drawing the utility model is specified below:
Among Fig. 1～Fig. 8, fixed support (1), the support (2) of living, spring (3), sheet metal (4), sheet metal (5), axle hook (6), breach (7).The most preferred embodiment of the utility model is such.Referring to figs. 1 through shown in Figure 8, fixed support (1) is made I shape with insulation board, and fixed support (1) lower surface has 2 breach (7); The bottom of fixed support (1) is fixed with sheet metal (5), and sheet metal (5) both sides curve the right angle, and the top is step fulcrum (8); Sheet metal (5) both sides, lower end have a hook (6) to block switch shaft to excurvation; Middle inwardly bending has hook and perforate to pass spring (3), and the support (2) of living is made with insulation board, is fixed with sheet metal (4) on the support (2) of living; Sheet metal (4) is to antecurvature and have a step to be stuck on the fulcrum (8) of sheet metal (5), in the middle of the sheet metal (4) curved hook is arranged and has the hole pass spring (3).
When installing and using, fixed support (1) has spring (3) tension with the support (2) of living, and the axle hook (6) on the sheet metal (5) blocks on switch shaft.When scarce two phase times wherein of three phase mains,, the two gold plaques on the switch produce thermal effects; The two gold plaques of three-phase not point-blank do not occur moving forward and backward, and fixed support (1) is along with moving; Owing to brush lightly spring (3) effect; The support (2) of living is opened, and the release on the switch is opened and cuts off the electricity supply simultaneously, plays the purpose of protection electrical equipment.
Claims (1)
1. appliance switch phase-lacking protective device is made up of fixed support (1), the support (2) of living, sheet metal (4), spring (3), it is characterized in that fixed support (1) makes I shape with insulation board; Fixed support (1) lower surface has breach (7), and the bottom of fixed support (1) is fixed with sheet metal (5), and sheet metal (5) both sides curve the right angle; The top is step fulcrum (8); There is grab (6) chucking switch shaft on sheet metal (5) both sides, lower end to excurvation, and middle inwardly bending has hook and perforate to pass spring (3), and the support (2) of living is made with insulation board; Living is fixed with sheet metal (4) on the support (2), and sheet metal (4) is to antecurvature and have a step to block the fulcrum (8) of sheet metal top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205210120U CN202353193U (en) | 2011-12-13 | 2011-12-13 | Open phase protective device for appliance switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205210120U CN202353193U (en) | 2011-12-13 | 2011-12-13 | Open phase protective device for appliance switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353193U true CN202353193U (en) | 2012-07-25 |
Family
ID=46542157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205210120U Expired - Fee Related CN202353193U (en) | 2011-12-13 | 2011-12-13 | Open phase protective device for appliance switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836207A (en) * | 2015-05-15 | 2015-08-12 | 宁波市士鑫电器有限公司 | Phase loss protection switch of three-phase motor |
-
2011
- 2011-12-13 CN CN2011205210120U patent/CN202353193U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836207A (en) * | 2015-05-15 | 2015-08-12 | 宁波市士鑫电器有限公司 | Phase loss protection switch of three-phase motor |
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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: 20120725 Termination date: 20121213 |