CN207637730U - A kind of current over-load protector - Google Patents
A kind of current over-load protector Download PDFInfo
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- CN207637730U CN207637730U CN201721908987.2U CN201721908987U CN207637730U CN 207637730 U CN207637730 U CN 207637730U CN 201721908987 U CN201721908987 U CN 201721908987U CN 207637730 U CN207637730 U CN 207637730U
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- input terminal
- terminal
- current over
- load protector
- power
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Abstract
The utility model discloses a kind of current over-load protectors; by installing a PTC heating plate additional inside protector and that PTC heating plates are arranged is in parallel with the bimetal leaf of protector; it can make bimetal leaf that can not reset after protector overloads; only after cutting off the power; bimetal leaf can just cool down reset, to ensure that the safety of maintenance conditions personnel and entire circuit.
Description
Technical field
The utility model is related to Electrical Safety to protect field, multiple more particularly to that can extend sheet metal after a kind of overload
The current over-load protector of position time.
Background technology
With the development of industrial technology, power supply and various electric appliances penetrated into people's daily life, work each neck
In domain, with the increasingly extensive use of various electric appliances, also become increasingly conspicuous using the safety issue of electric appliance.In order to ensure that electricity consumption is pacified
Entirely, people are provided with current over-load protector in electric appliance, pass through the automatic striping of current over-load protector in line anomalies
Road, to avoid the generation of peril.
Current over-load protector interior design has bimetal leaf, and movable contact is provided on bimetal leaf, is gone back inside protector
It is provided with stationary contact, movable contact and stationary contact point contact form closed circuit when normal operation, and electric current is by bimetal leaf to electric appliance
Tool power supply, when overcurrent occurs, excessive electric current makes bimetal leaf fever, deformation, so that movable contact is separated with stationary contact, to cut
Cut-off electrical circuit.After power-off, bimetal leaf cooling restores deformation, and movable contact with stationary contact point contact, re-forms the confession of closure again
Electrical circuit.
For conventional current over-load protector after overcurrent occurs, bimetal leaf would generally restore deformation in seconds, multiple
Position circuit, if need to electric appliance is detected and be repaired, it is necessary to power supply is initially switched off, if not having at this time because electric appliance is there are more serious failure
Have to cut off the power in time and be overhauled, the Rapid reset of protector will be brought great potential safety hazard, or due to maintenance personal
Carelessness, in the case where not cutting off the power carry out electrical device repair and detection, will be extremely dangerous.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of current over-load protector, can protect
Shield device makes the bimetal leaf inside protector that can not reset after overloading, its reset can be just made only after cutting off the power, and protects
The safety of personnel and circuit is demonstrate,proved.
In order to achieve the above objectives, a technical solution of the utility model use is：A kind of current over-load protector is provided,
Including the upper cover mutually riveted and pedestal, power input terminal and power output terminal are mounted on the base and stretch out pedestal, double
Sheet metal one end is connect with power output terminal, and the fixed movable contact of the other end, stationary contact is correspondingly arranged on power input terminal, institute
It states and has also opened up a groove on pedestal, installed a PTC heating plate, PTC heating plates both ends in the groove location additional
It is respectively arranged with the input terminal and the output terminal, the input terminal is connected with power input terminal, the leading-out terminal and electricity
Source output terminal is connected.
Preferably, it is additionally provided with installation support plate between the upper cover and pedestal of the current over-load protector.
Preferably, it is respectively arranged with installation on one end of the power input terminal and power output terminal stretching pedestal
Hole.
Preferably, it is provided with lock screw on the mounting hole of the power input terminal and power output terminal.
Preferably, the input terminal and the output terminal at PTC heating plates both ends is respectively arranged with U-shaped hole, the power supply
Matching hole is correspondingly arranged on input terminal and power output terminal respectively, the input terminal passes through riveting with power input terminal
Nail is connected and is mounted on the base, and the leading-out terminal by rivet interlacement and is mounted on the base with power output terminal.
Preferably, the current over-load protector on be additionally provided with installation nut.
The utility model has the beneficial effects that：1. the installation PTC heating plates in protector, PTC heating plates and protector
Bimetal leaf is arranged in parallel, when normal operation, since PTC heating sheet resistances are larger, electric current by bimetal leaf to electric power supply,
When the overload occurs, sheet metal deforms, and circuit is cut in movable contact and stationary contact separation, and electric current is through PTC heating plate shapes at this time
At circuit, PTC heating plates generate heat after being powered, and keep the bimetal leaf beside it in the condition of high temperature, make bimetal leaf can not
It is resetted because restoring deformation, only after cutting off the power, could be resetted after bimetal leaf and the cooling of PTC heating plates, ensure that dimension
Repair the safety of personnel；2. protector can be installed to the inside of electrical device product by installation sheet, easy to operate to improve simultaneously
The aesthetics of product.
Description of the drawings
Fig. 1 is the surface structure schematic diagram of one preferred embodiment of the utility model；
Fig. 2 is the internal structure schematic diagram of the utility model embodiment；
Fig. 3 is the detonation configuration figure of another embodiment of shown the utility model；
The label of each component is as follows in attached drawing：1, upper cover, 2, pedestal, 3, bimetal leaf, 4, power input terminal, 5, power supply
Leading-out terminal, 6, stationary contact, 7, movable contact, 8, PTC heating plates, 81, input terminal, 82, leading-out terminal, 9, installation support plate, 10,
Long rivet, 11, short rivet, 12, lock screw, 13, installation nut.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear to be made to the scope of protection of the utility model
Define.
It please refers to Fig.1 to Fig. 2, the utility model embodiment includes：A kind of current over-load protector, including mutually rivet
Upper cover 1 and pedestal 2, are connected between upper cover 1 and pedestal 2 by rivet 10, and power input terminal 4 and power output terminal 5 are installed
In on pedestal 1 and stretching out pedestal, 3 one end of bimetal leaf is connect with power output terminal 5, the fixed movable contact 7 of the other end, stationary contact
6 are correspondingly arranged on power input terminal 4, and a groove has also been opened up on pedestal 1, has installed a PTC in the groove location additional
Heating plate 8,8 both ends of PTC heating plates are respectively arranged with input terminal 81 and leading-out terminal 82, the input terminal 81 and electricity
Source input terminal 4 is connected, and the leading-out terminal 82 is connected with power output terminal 5.
Installation support plate 9 is additionally provided between the upper cover 1 and pedestal 2 of the current over-load protector, the installation support plate 9 can
With mounted on the upper end of protector.
The power input terminal 4 and power output terminal 5, which stretch out on one end of pedestal, is provided with mounting hole, on mounting hole
It is provided with lock screw 12.
The input terminal 81 and leading-out terminal 82 at 8 both ends of PTC heating plates are respectively arranged with U-shaped hole, and the power supply is defeated
Enter and be correspondingly arranged on matching hole on terminal 4 and power output terminal 5 respectively, the input terminal 81 is logical with power input terminal 4
It crosses rivet 11 to connect and be installed on pedestal 2, the leading-out terminal 82 is connect and installed by rivet 11 with power output terminal 5
Nut 13 is installed on pedestal 2, being additionally provided on the current over-load protector.
In use, protector can be fixed on to the suitable position of electric appliance by installation support plate 9 or installation nut 13, pass through lock
Power supply wiring is connected on power input terminal 4 by tight nut 12, and power output terminal 5 is then with appliance wiring, and electrical equipment is just
Often operation when, movable contact 7 and stationary contact 6 contact with each other, electric current through bimetal leaf 3 to electric power supply, it is when the overload occurs, excessive
Electric current so that the fever deformation of bimetal leaf 3, movable contact 7 and stationary contact 6 is disconnected, electric current is through input power input terminal 4 and input
Terminal 81 flows into PTC heating plates 8, then is flowed out through leading-out terminal 82 and power output terminal, and flowing through the electric current of PTC heating plates 8 makes
8 exotherm of PTC heating plates, for temperature up to 110~150 degree, PTC heating plates 8 make the bimetal leaf 3 beside it also protect
Hold under higher state of temperature, to make bimetal leaf 3 keep deformation, the state that movable contact 7 and stationary contact 6 remain open,
It ensure that circuit and the safety of personnel, it, only need to be by dump again when maintenance personal need to be detected and repair to electrical device
It repairs.
Another embodiment of the utility model is shown in that Fig. 3, the installation support plate 9 can be set to the upper end of protector,
Make the compacter beauty of whole device.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of current over-load protector, which is characterized in that including the upper cover mutually riveted and pedestal, power input terminal and electricity
Source output terminal is mounted on the base and stretches out pedestal, and bimetal leaf one end is connect with power output terminal, and the other end is fixed dynamic
Contact, stationary contact are correspondingly arranged on power input terminal, which is characterized in that a groove has also been opened up on the pedestal, it is described
Installing a PTC heating plate in groove location additional, PTC heating plates both ends are respectively arranged with the input terminal and the output terminal,
The input terminal is connected with power input terminal, and the leading-out terminal is connected with power output terminal.
2. a kind of current over-load protector according to claim 1, which is characterized in that the current over-load protector it is upper
Installation support plate is additionally provided between lid and bottom seat.
3. a kind of current over-load protector according to claim 1, which is characterized in that the power input terminal and power supply
It is respectively arranged with mounting hole on one end of leading-out terminal stretching pedestal.
4. a kind of current over-load protector according to claim 3, which is characterized in that the power input terminal and power supply
It is provided with lock screw on the mounting hole of leading-out terminal.
5. a kind of current over-load protector according to claim 1, which is characterized in that PTC heating plates both ends it is defeated
Enter terminal and leading-out terminal is respectively arranged with U-shaped hole, is correspondingly arranged respectively on the power input terminal and power output terminal
There is matching hole, the input terminal by rivet interlacement and to be mounted on the base with power input terminal, the leading-out terminal with
Power output terminal is by rivet interlacement and is mounted on the base.
6. a kind of current over-load protector according to claim 1, which is characterized in that the current over-load protector it is upper
It is additionally provided with installation nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721908987.2U CN207637730U (en) | 2017-12-30 | 2017-12-30 | A kind of current over-load protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721908987.2U CN207637730U (en) | 2017-12-30 | 2017-12-30 | A kind of current over-load protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207637730U true CN207637730U (en) | 2018-07-20 |
Family
ID=62851924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721908987.2U Active CN207637730U (en) | 2017-12-30 | 2017-12-30 | A kind of current over-load protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207637730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010822A (en) * | 2017-12-30 | 2018-05-08 | 浙江磐安中最电器有限公司 | A kind of current over-load protector |
-
2017
- 2017-12-30 CN CN201721908987.2U patent/CN207637730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010822A (en) * | 2017-12-30 | 2018-05-08 | 浙江磐安中最电器有限公司 | A kind of current over-load protector |
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