CN201975355U - Protection switch - Google Patents
Protection switch Download PDFInfo
- Publication number
- CN201975355U CN201975355U CN201120097346XU CN201120097346U CN201975355U CN 201975355 U CN201975355 U CN 201975355U CN 201120097346X U CN201120097346X U CN 201120097346XU CN 201120097346 U CN201120097346 U CN 201120097346U CN 201975355 U CN201975355 U CN 201975355U
- Authority
- CN
- China
- Prior art keywords
- control assembly
- base
- shell
- switch
- coil
- 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 relates to a switch, in particular to a protection switch. For the protection switch, a shell is provided with a knife switch for controlling a moving contact; a coil control assembly is arranged between the knife switch and the moving contact; the shell consists of an upper cover and a base; fixed contacts, the moving contact and the coil control assembly are respectively arranged at the front end of the base; flash barriers are arranged between the fixed contacts; the knife switch is connected with the coil control assembly through the upper cover; the rear end of the base is provided with a relay control assembly for controlling the coil control assembly; and a detection assembly is respectively arranged between each fixed contact and the relay control assembly. Due to the adoption of the structure, after each fixed contact is contacted with the moving contact, the detection assemblies can detect voltages of the corresponding fixed contacts timely; and when the voltage of one fixed contact is higher than the voltages of the other two fixed contacts, the detection assemblies can transmit a signal to the relay control assembly and the coil control assembly is controlled by the relay control assembly so as to switch off the knife switch. The protection switch has the effects of high-voltage open phase and balanced voltage. Moreover, all the assemblies are reasonably arranged in the shell. The protection switch has simple structure.
Description
Technical field
The utility model relates to a kind of switch, particularly a kind of protection switch.
Background technology
At present; traditional knife switch that is used for three phase mains is made of switch housing, three groups of fixed contacts and three groups of moving contacts of being located in the shell usually, and moving contact is controlled by knife switch, when circuit overloads; pound knife switch and control three groups of contacts and fixed contact disconnection simultaneously, implement power-off protection.And the inconsistent situation of voltage that three groups of fixed contact places enter electric current takes place sometimes, promptly one group of fixed contact place input is high voltage, and in addition two groups of inputs be low-voltage, such situation can cause damage to circuit when taking place.
Summary of the invention
At the deficiency that prior art exists, the utility model provides a kind of balanced voltage, the high pressure phase failure, electronic protection switch simple in structure.
For achieving the above object; the utility model provides following technical scheme: a kind of motor comprehensive protection switch; include shell; be located at three groups of fixed contacts and three groups of moving contacts in the shell; shell is provided with the knife switch of control moving contact; be provided with the coil control assembly between knife switch and the moving contact; described shell is made of loam cake and base; described fixed contact; moving contact and coil control assembly are located at the base front end respectively; and respectively organize and be provided with flash barrier between the fixed contact; described knife switch sees through loam cake and is connected with the coil control assembly; the rear end of base is provided with the relay control assembly with the control of coil control assembly, and each is organized between fixed contact and the relay control assembly and is respectively equipped with detection components.
Adopt technique scheme, each organizes fixed contact by being communicated with the relay control assembly, and be provided with detection components between fixed contact and the relay control assembly, make respectively organize fixed contact and moving contact touch close after, detection components can detect the voltage of respectively organizing contact timely, when the voltage at one group of fixed contact place is higher than other two groups, detection components can be transferred to signal the relay detection components, by the relay detection components coil control assembly is controlled, constitute closing of knife switch, play the effect of the high pressure phase failure and balanced voltage, and respectively being in of assembly arranged in the shell rationally, simple in structure.
The utility model further is set to: described relay control assembly includes transformer and detects control circuit board, the rear end of base is provided with standing groove, the detection control circuit board places in this standing groove and by screw and base to be fixed, described transformer is fixedlyed connected with the detection control circuit board, and described detection components is a magnetic test coil.
Adopt technique scheme, the placement of transformer in the relay control assembly and detection control circuit board is reasonable, and area occupied is little, has saved the placement space of outer casing base, has dwindled the volume of shell.
The utility model further is set to: described detection control circuit board has three, wherein fix with base for one, and another piece and piece vertical fixing, one places on the outer casing upper cover in addition.
Adopt technique scheme, being provided with like this is the installation of testing circuit plate for convenience.
Below in conjunction with accompanying drawing the utility model is further described:
Description of drawings
Fig. 1 is the schematic perspective view of the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment;
Embodiment
As Fig. 1, a kind of protection switch shown in Figure 2, include shell 1, be located at three groups of fixed contacts 2 and three groups of moving contacts 3 in the shell 1, shell 1 is provided with the knife switch 4 of control moving contact 3, be provided with coil control assembly 5 between knife switch 4 and the moving contact 3, shell 1 is made of loam cake 12 and base 11, described fixed contact 2, moving contact 3 and coil control assembly 5 are located at base 11 front ends 111 respectively, and respectively organize and be provided with flash barrier 13 between the fixed contact 2, the setting of this flash barrier 13 can prevent that electric arc that one group of fixed contact 2 and moving contact 3 touch fashionable generation from climbing to another group fixed contact 2 and cause short circuit with moving contact 3 places; Knife switch 4 sees through loam cake 12 and is connected with coil control assembly 5, and the rear end 112 of base 11 is provided with relay control assembly 6, and each is organized between fixed contact 2 and the relay control assembly 6 and is respectively equipped with detection components 7.Each organizes fixed contact 2 by being communicated with relay control assembly 6, and be provided with detection components 7 between fixed contact 2 and the relay control assembly 6, make respectively organize fixed contact 2 and moving contact 3 touch close after, detection components 7 can detect the voltage of respectively organizing contact timely, when the voltage at one group of fixed contact 2 place is higher than other two groups, detection components 7 can be transferred to relay detection components 6 with signal, by 5 controls of 6 pairs of coil control assemblys of relay detection components, constitute closing of knife switch 4, play the effect of the high pressure phase failure and balanced voltage, and respectively assembly is in and arranges in the shell 1 rationally, and is simple in structure.
In the utility model embodiment, described relay control assembly 6 includes transformer 61 and detects control circuit board 62, the rear end 112 of base 11 is provided with standing groove 113, detecting control circuit board 62 places this standing groove 113 interior and fixing by screw and base 11, described transformer 61 is fixedlyed connected with detection control circuit board 62, detect control circuit board 62 and have three, wherein fix with base for one, another piece and piece vertical fixing, also having one places on shell 1 loam cake 12, need to prove, detect control circuit board 62 and also can be one, also is feasible.Described detection components 7 is a magnetic test coil.
Claims (3)
1. protection switch; include shell; be located at three groups of static contacts and three groups of moving contacts in the shell; shell is provided with the knife switch of control moving contact; be provided with the coil control assembly between knife switch and the moving contact; it is characterized in that: described shell is made of loam cake and base; described fixed contact; moving contact and coil control assembly are located at the base front end respectively; and respectively organize and be provided with flash barrier between the fixed contact; described knife switch sees through loam cake and is connected with the coil control assembly; the rear end of base is provided with the relay control assembly with the control of coil control assembly, and each is organized between fixed contact and the relay control assembly and is respectively equipped with detection components.
2. protection switch according to claim 1; it is characterized in that: described relay control assembly includes transformer and detects control circuit board; the rear end of base is provided with standing groove; the detection control circuit board places in this standing groove and by screw and base to be fixed; described transformer is fixedlyed connected with the detection control circuit board, and described detection components is a magnetic test coil.
3. protection switch according to claim 2 is characterized in that: described detection control circuit board has three, wherein fix with base for one, and another piece and piece vertical fixing, one places on the outer casing upper cover in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120097346XU CN201975355U (en) | 2011-04-06 | 2011-04-06 | Protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120097346XU CN201975355U (en) | 2011-04-06 | 2011-04-06 | Protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975355U true CN201975355U (en) | 2011-09-14 |
Family
ID=44580454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120097346XU Expired - Fee Related CN201975355U (en) | 2011-04-06 | 2011-04-06 | Protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177640A1 (en) * | 2016-04-12 | 2017-10-19 | 朱红英 | Intelligent knife switch |
-
2011
- 2011-04-06 CN CN201120097346XU patent/CN201975355U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177640A1 (en) * | 2016-04-12 | 2017-10-19 | 朱红英 | Intelligent knife switch |
| WO2017177639A1 (en) * | 2016-04-12 | 2017-10-19 | 朱红英 | Intelligent knife switch for intelligent system |
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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: 20110914 Termination date: 20130406 |