CN2362191Y - Overload protective switch - Google Patents
Overload protective switch Download PDFInfo
- Publication number
- CN2362191Y CN2362191Y CN 99203155 CN99203155U CN2362191Y CN 2362191 Y CN2362191 Y CN 2362191Y CN 99203155 CN99203155 CN 99203155 CN 99203155 U CN99203155 U CN 99203155U CN 2362191 Y CN2362191 Y CN 2362191Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- tripping
- utility
- model
- contact
- 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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides an overload protection switch, which is composed of an operating mechanism, a tripping mechanism, a contact, an arc extinguishing device, etc. A circuit can be opened or closed frequently, and a power supply can be cut off when the circuit overloads in order to protect the circuit. The utility model has the advantages of compact structure, compact size and superiority in an occasion having limited space. The circuit using the switch has no need of overload protection devices such as a fuse, a circuit breaker, etc., the circuit is simplified, and the cost of the circuit is correspondingly reduced. The utility model can be used for distribution lines, motor circuits and lighting circuits.
Description
The utility model relates to a kind of overcurrent protection switch.It has the function that frequently is switched on or switched off circuit and the overload of circuit is protected.General distribution line, motor line and illuminating line are all applicable.
Existing switch element only plays on-off to circuit; And existing circuit breaker only shields to circuit, can not be used for switching circuit continually.Therefore existing circuit is except that installing switch element, the overload protection electrical equipment such as being equipped with fuse or circuit breaker of still needing.In many occasions, on site operation equipment, require simple as far as possible circuit, so that install.Overcurrent protection switch then can be located for switch and circuit breaker simultaneously, thereby reaches the purpose of circuit reduction.
The utility model aims to provide a kind of overcurrent protection switch with dual-use function.
Technical solution of the present utility model is, a kind of overcurrent protection switch, and it is made up of operating mechanism, contact system, arc-control device and tripping system etc.It is characterized in that, between operating mechanism and contact system tripping system is set, this system includes the five-bar mechanism that electromagnetic mechanism, push rod and tripping mechanism tripping mechanism then are made up of last connecting rod and lower link etc.When being in the position of on-off with given button of hand, last connecting rod and lower link are straight and upright, are in the dead band, become four connecting rods in fact, only have one degree of freedom.When circuit overloads, push rod drives release lever under the electromagnetic force effect, and satisfying tripping mechanism is five-bar mechanism again.Just have two degrees of freedom this moment, promptly when button invariant position, under the effect of energy storage torsion spring, lower link is instantaneous to separate moving contact, reaches the purpose of cutting off the electricity supply.
The utility model will be further described below in conjunction with embodiment and accompanying drawing thereof.
Accompanying drawing 1 is the full sectional view of present embodiment;
Accompanying drawing 2 is tripping mechanism figure.
Present embodiment is made up of operating mechanism, contact system, arc-control device (15) and tripping system etc.Operating mechanism comprises: button (1), axle (4), torsion spring (5), axle (6) and controls (9); Contact system comprises: fixed contact (14), moving contact (16) and torsion spring (12); Tripping system comprises: electromagnetic mechanism (11), push rod (8) and tripping mechanism (10); Tripping mechanism (10) comprising: torsion spring (7), last connecting rod (18), axle (19), torsion spring (20), release lever (21) and lower link (22).Button (1) is installed in the housing (2).Tripping system, moving contact (16), controls (9) etc. are contained on the support (17).Support (17), fixed contact (14) are contained on the base (13) together with arc-control device (15).Housing (2) clamps with base (13).By nut (3) with overall fixed on the desired position.
Manual button (1) can be with moving contact (16) closure or openness, and connecting rod on this moment (18) and lower link (22) are straight and upright, are in the dead band.Shown in accompanying drawing 2 solid lines.When circuit overload, electromagnetic attraction orders about push rod (8) and stirs release lever (21), make connecting rod (18) and lower link (22) break away from the dead band, tripping mechanism (10) is reduced to five-bar mechanism, and shown in accompanying drawing 2 dotted lines, it has two degrees of freedom, under the situation of button (1) invariant position, because of the effect of energy storage torsion spring (12), moving contact (16) was thrown off with lower link (22) instant, and power supply promptly is cut off.
The utility model is simple and compact for structure, and all parts place in the airtight plastic casing, body Similar with general toggle switch. Characteristics are that moving contact can separate or closure fast in addition, add perfect Arc-control device, contact is prolonged service life greatly.
Claims (3)
1. overcurrent protection switch; it is made up of operating mechanism, contact system, arc-control device and tripping system etc.; it is characterized in that between operating mechanism and contact system tripping system being set, tripping system is made up of electromagnetic mechanism (11), push rod (8) and tripping mechanism (10) etc.
2. overcurrent protection switch according to claim 1 is characterized in that tripping mechanism (10) is made up of five connecting rods, comprising last connecting rod (18) and lower link (22).
3. overcurrent protection switch according to claim 1 is characterized in that moving contact (16) periphery is provided with arc-control device (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203155 CN2362191Y (en) | 1999-01-30 | 1999-01-30 | Overload protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99203155 CN2362191Y (en) | 1999-01-30 | 1999-01-30 | Overload protective switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2362191Y true CN2362191Y (en) | 2000-02-02 |
Family
ID=33998356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99203155 Expired - Fee Related CN2362191Y (en) | 1999-01-30 | 1999-01-30 | Overload protective switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2362191Y (en) |
-
1999
- 1999-01-30 CN CN 99203155 patent/CN2362191Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |