CN2088288U - Open-phase protective push-button switch - Google Patents
Open-phase protective push-button switch Download PDFInfo
- Publication number
- CN2088288U CN2088288U CN 90226849 CN90226849U CN2088288U CN 2088288 U CN2088288 U CN 2088288U CN 90226849 CN90226849 CN 90226849 CN 90226849 U CN90226849 U CN 90226849U CN 2088288 U CN2088288 U CN 2088288U
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- fuse
- phase
- terminal
- motor
- push
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Abstract
The utility model discloses an open-phase protective push-button switch capable of being widely used for the electric distribution system of a motor. A three-phase fuse is arranged on the base plate of a switch box, and a common fuse wire is used; one end of the fuse wire is installed on a movable terminal with certain tension, and the other end of the movable terminal is provided with a switch device. The utility model can be used both as an electric source fuse for a motor, and as the control switch of the motor. The utility model can play roles of short circuit protection and open-phase protection for fuse wire failures which are caused by the overload of a motor or any malfunction of the motor.
Description
The utility model belongs to the mechanical ﹠ electrical technology field.
In the system that power motor drags, the motor of middle-size and small-size power when turning round, generally all adopts three-phase fuse and threephase switch to realize control at folk prescription, though such control circuit is simple, exists fatal defective for motor.Three-phase fuse can only play to a certain extent the chance of motor circuit inter-burnout-ing is increased, and does not conform with safety regulation again but do not insert fuse.If motor is protected slightly, then need to insert devices such as thermal relay, A.C. contactor, push-button switch.This traditional method that connects that secondary control loop is set, not only uneconomical outside, main is that volume is big, the motor of using for the industrial sewing machine of the motor of middle-size and small-size power, particularly light textile, apparel industry just is not suitable for very much.Therefore, the Multifunction control device of research and development motor has wide prospect and great practical value.
The purpose of this utility model is: the fusing technology of fuse and three of the control technologys of open phase protection technology and three phase mains scientifically are combined as a whole, solve the open phase protection problem of middle-size and small-size power electric motor, simplify the protection control circuit of motor.
Main points of the present utility model are: in the distribution system of middle-size and small-size power electric motor, with the operating state of motor three phase mains fuse, directly control the operating state of mechanical type phase failure protector and three phase mains push-button switch by mechanical device.
Operation principle of the present utility model is: the tensile property that adopts the general purpose fuse (lead-antimony alloy silk or terne metal silk) of existing use to be had; when motor operation appearance is unusual; under the situation of fuse failure, tension failure; disconnect the push-button switch of control three phase mains by mechanical device; motor at open-phase running is shut down, realize open phase protection.
The purpose of this utility model is achieved in that on the substrate of a switch enclosure, according to electric power incoming line terminal (4), starting button (5), three phase mains contact (6), fuse terminal (7), fuse (8), active type fuse terminal (11), braiding flexible cord (12), power outlet terminal (13) order is connected electrically on the substrate to be formed, three-phase fuse-element be arranged in parallel, one end of fuse (8) is installed on the fuse terminal (7) of power supply upstream end, the other end is installed on the active type fuse terminal (11), one side of active type fuse terminal (11) is furnished with compression spring (10), by it fuse is implemented the certain force of strain monitoring; Another side is then installed near connecting rod (15), and by the control of connecting rod (15) to starting button (5) implementation Push And Release, active type fuse terminal (11) is looked its scope of activities and is connected on the power outlet terminal (13) with braiding flexible cord (12).When normal the use, can control the running of motor and stop by button (5) and (15).
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing (1) is a theory diagram of the present utility model.Form by main fuse (1), mechanical phase failure protector (2), three-phase push-button switch (3).
Accompanying drawing (2) is a phase structure schematic diagram of the present utility model, is made up of electric power incoming line terminal (4), starting button (5), three phase mains contact (6), fuse terminal (7), general purpose fuse (8), active tension spring base (9), compression spring (10), movable fuse terminal (11), braiding flexible cord (12), power outlet terminal (13), back-moving spring (14), connecting rod (15), stop button (16), substrate (17) etc.Three identical structures (accompanying drawing 2) are set in parallel on the substrate, and alternate filling dielectric isolation layer and necessary arc-control device have just constituted a complete the utility model.
Accompanying drawing (3) is the utility model flashy operation program schematic diagram when implementing short-circuit protection and open phase protection; if motor emerged in operation fault, fuse (8) fusing, active type fuse terminal (11) promote connecting rod (15), operation button (5) are takeoff under the effect of compression spring (10); deenergization contact (6), the short-circuit protection and the open phase protection of realization motor.
Accompanying drawing (4) is a kind of winding diagram of the utility model in the motor distribution system.
The utility model applicability is strong, and the motor of middle-size and small-size power all can adopt when doing folk prescription to operation.Installing simply, easy to operate, is the main fuse of motor, is again the control switch of motor, to because the fuse failure that electromotor overload causes, or the fuse failure that causes of any motor abnormal failure, all can play 100% open phase protection effect.
The utility model, simple in structure, cheap, its combining of technology and open phase protection technology and three science of power supply control technology that will fuse makes the control circuit device unification of motor, has fundamentally reduced used device count.The exploitation and the popularization of open phase protection formula push-button switch will provide a lot of convenience for the user, for country saves copper product and reduces enterprises' loss significant meaning are arranged.
Claims (3)
1, a kind of open phase protection formula push-button switch that is applied to Motor Control, by electric power incoming line terminal, starting button, three phase mains contact, fuse terminal, fuse, movable fuse terminal, braiding flexible cord, power outlet terminal according to this order be electrically connected and form, it is characterized by: three-phase fuse-element be arranged in parallel on a substrate, one end of fuse is installed on the fuse terminal of electric power incoming line, the other end is installed on the active type fuse terminal, one side of active type fuse terminal is furnished with compression spring, by it fuse is implemented the certain force of strain monitoring; Another side is then installed near connecting rod, and by the control of connecting rod to starting button implementation Push And Release, active type fuse terminal is looked its scope of activities and is connected on the power outlet terminal with the braiding flexible cord.
2, according to the described open phase protection formula of claim 1 push-button switch, it is characterized by: three-phase fuse-element is set in parallel in the switch, and alternate is dielectric isolation layer and necessary arc-control device.
3, according to the described open phase protection formula of claim 1 push-button switch, it is characterized by: being combined as a whole of control technology three-phase of short-circuit protection technology and open phase protection technology and three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226849 CN2088288U (en) | 1990-12-26 | 1990-12-26 | Open-phase protective push-button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90226849 CN2088288U (en) | 1990-12-26 | 1990-12-26 | Open-phase protective push-button switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2088288U true CN2088288U (en) | 1991-11-06 |
Family
ID=4904019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90226849 Withdrawn CN2088288U (en) | 1990-12-26 | 1990-12-26 | Open-phase protective push-button switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2088288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730274A (en) * | 2013-12-20 | 2014-04-16 | 吴江市东泰电力特种开关有限公司 | Double-moving-contact switch device |
-
1990
- 1990-12-26 CN CN 90226849 patent/CN2088288U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730274A (en) * | 2013-12-20 | 2014-04-16 | 吴江市东泰电力特种开关有限公司 | Double-moving-contact switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |