CN2556781Y - Protector for electrical equipment - Google Patents
Protector for electrical equipment Download PDFInfo
- Publication number
- CN2556781Y CN2556781Y CN 02267417 CN02267417U CN2556781Y CN 2556781 Y CN2556781 Y CN 2556781Y CN 02267417 CN02267417 CN 02267417 CN 02267417 U CN02267417 U CN 02267417U CN 2556781 Y CN2556781 Y CN 2556781Y
- Authority
- CN
- China
- Prior art keywords
- electrical equipment
- pressure
- pedestal
- contact electrode
- guard member
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
A protecting device for an electric appliance comprises a base and a moving body. The base is provided with two groups of fixed electrodes a, a' and b, b', which are used for being connected with an external power supply and the electric appliance; the moving body is provided with a group of serrate contact electrodes c and c', and a pressure sensitive protective piece is connected between the electrodes c and c' in series; an elastic mechanism is connected between the moving body and the base, and a high heat burning-out piece is connected between the pressure sensitive protective piece and the base; the moving body is fixed by the high heat burning-out piece, and the two groups of fixed electrodes a, a' and b, b' are communicated through the electrodes c and c'. When thunder is weak, the utility model has the function of amplitude limitation, while the thunder is strong, the utility model can cut a circuit with high safety.
Description
One, technical field
The utility model relates to a kind of overvoltage, lightning protection device of electrical equipment.
Two, background technology
Existing overvoltage, the lightning protection device that is used on telephone set or other electric equipment generally will just work when voltage surpasses certain value and has electric current to pass through, and for more weak thunder and lightning, it protects DeGrain, and the components and parts in the electric equipment are damaged.And,, be difficult to avoid electric equipment impaired because circuit is not exclusively isolated in the protective device for the very high or strong thunder and lightning of voltage.
Three, summary of the invention
The purpose of this utility model is a kind of safe electrical equipment protector of design, and this protector can prevent the damage to electrical equipment of circuit overvoltage or thunder and lightning effectively.
This electrical equipment protector comprises pedestal and mobile, and two groups of fixed electrode a, a ' and b, b ' are set on the pedestal, is respectively applied for external power to be connected with electric equipment; One set of contact electrode c, c ' are set in the mobile, are serially connected with pressure-sensitive guard member between contact electrode c, the c '; Be connected with elastic mechanism between mobile and the pedestal, be connected with the high temperature fuse member between pressure-sensitive guard member and the pedestal; Mobile is fixed by the high temperature fuse member, and two groups of fixed electrode a, a ' and b, b ' are by contact electrode c, c ' connection.
Above-mentioned pressure-sensitive guard member comprises the voltage stabilizing didoe of two homopolarity serial connections, and heat conduction, the frangible material of high temperature are laid in the voltage stabilizing didoe outside.
For preventing that high pressure from producing electric arc, above-mentioned contact electrode c, c ' are with suitable spacing setting, and a relative side all is made into zigzag.
This electrical equipment protector is connected between external power and the electric equipment, when thunder and lightning is more weak, can play the amplitude limit effect to voltage of electric field by pressure-sensitive guard member.When thunder and lightning was strong, pressure-sensitive guard member punctured, simultaneously because the heating of pressure-sensitive guard member makes the fracture of high temperature fuse member; pass through elastic mechanism; make contact electrode c, c ' and fixed electrode a, a ' and b, b ' disengaging, and open circuit, thereby electric equipment is played a protective role.This protector is simple and practical, reliability and safe.
Four, description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is that the master of electrical equipment protector looks cutaway view.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the circuit theory diagrams of this electrical equipment protector.
Fig. 5 is the cut-away view of pressure-sensitive guard member in this electrical equipment protector.
Five, embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the electrical equipment protector of the utility model design is used for overvoltage, the lightning protection of telephone set, communication equipment or other electric equipment.This protector comprises pedestal and mobile, and pedestal comprises shell 1, pedestal 2 and be arranged on fixed support 3 on the pedestal 2 that mobile comprises travel(l)ing rest 4.Travel(l)ing rest 4 and fixed support 3 by spring 5 be connected, travel(l)ing rest 4 can be around fixed support 3 swings.
Two groups of fixed electrode a, a ' and b, b ' are set on the pedestal 2, and fixed electrode a, a ' and b, b ' are connected with electric equipment with external power respectively, as shown in Figure 4.One set of contact electrode c, c ' are set on the travel(l)ing rest 4, the end of contact electrode c, c ' by lead 6,6 ' be communicated with fixed electrode a, a ', the other end is movable end.Produce electric arc when preventing high pressure, contact electrode c, c ' are with suitable spacing setting, and a relative side all is made into zigzag.
Be serially connected with pressure-sensitive guard member 7 between contact electrode c, the c ', the structure of pressure-sensitive guard member 7 as shown in Figure 5, inside comprises voltage stabilizing didoe VD1, the VD2 of two homopolarities serial connection, heat conduction, the frangible material 8 of high temperature are laid in the outside.About pressure-sensitive guard member 7, the auspicious utility model patent of seeing the applicant's the patent No. 98240319 is this not tired one by one stating.
Be connected with backguy 9 between pressure-sensitive guard member 7 and fixed support 3, backguy 9 material that high temperature easily fuses down by intensity height under a kind of normal temperature is made.Overcome the tension force of spring 5 by backguy 9, contact electrode c, c ' are communicated with, i.e. K switch among Fig. 41, K2 conducting with fixed electrode a, a ' and b, b '.At this moment, electric equipment and external power are connected, and can normally use.
When electric equipment and telephone line are struck by lightning, can online generation electric field high pressure.When thunder and lightning a little less than; because pressure-sensitive guard member 7 plays the amplitude limit effect; make the highest amplitude of voltage between telephone line about 90V-100V; make the highest amplitude of voltage between the 220V AC power line about 245V-250V; can not damage electric equipment; and protector itself can not damage yet, and its effect is identical with lightning protection fuse principle.When thunder and lightning is stronger, then pressure-sensitive guard member 7 is breakdown, with the external power short circuit, and the protection electric equipment.Simultaneously because 7 heatings of pressure-sensitive guard member make backguy 9 fusing, spring 5 shrinks, pulling travel(l)ing rest 4, makes contact electrode c, c ' and fixed electrode a, a ' and b, b ' disengagings, i.e. K1, K2 disconnection, and the cut-out circuit, thus play protective effect completely.
This electrical equipment protector is applied widely: by selecting the parameter value of voltage stabilizing didoe VD1, VD2 in the pressure-sensitive guard member 7, can use in various AC and DC circuit.This electrical equipment protector can connect in the circuit board by welding or connector, after protector damages, can change easily.
Claims (3)
1, electrical equipment protector is characterized in that: comprise pedestal and mobile, two groups of fixed electrode a, a ' and b, b ' are set on the pedestal, be respectively applied for external power and be connected with electric equipment; One set of contact electrode c, c ' are set in the mobile, are serially connected with pressure-sensitive guard member between contact electrode c, the c '; Be connected with elastic mechanism between mobile and the pedestal, be connected with the high temperature fuse member between pressure-sensitive guard member and the pedestal; Mobile is fixed by the high temperature fuse member, and two groups of fixed electrode a, a ' and b, b ' are by contact electrode c, c ' connection.
2, electrical equipment protector according to claim 1 is characterized in that: above-mentioned pressure-sensitive guard member comprises the voltage stabilizing didoe of two homopolarity serial connections, and heat conduction, the frangible material of high temperature are laid in the voltage stabilizing didoe outside.
3, electrical equipment protector according to claim 1 is characterized in that: above-mentioned contact electrode c, c ' are with suitable spacing setting, and a relative side all is made into zigzag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267417 CN2556781Y (en) | 2002-06-03 | 2002-06-03 | Protector for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267417 CN2556781Y (en) | 2002-06-03 | 2002-06-03 | Protector for electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556781Y true CN2556781Y (en) | 2003-06-18 |
Family
ID=33733012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267417 Expired - Fee Related CN2556781Y (en) | 2002-06-03 | 2002-06-03 | Protector for electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556781Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078292A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | Fusing device of power source surge protector |
| CN107611826A (en) * | 2017-11-02 | 2018-01-19 | 魏超军 | A kind of construction protection distribution box |
-
2002
- 2002-06-03 CN CN 02267417 patent/CN2556781Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078292A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | Fusing device of power source surge protector |
| CN107611826A (en) * | 2017-11-02 | 2018-01-19 | 魏超军 | A kind of construction protection distribution box |
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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 |