CN201438446U - Current overload protector - Google Patents
Current overload protector Download PDFInfo
- Publication number
- CN201438446U CN201438446U CN2009200612106U CN200920061210U CN201438446U CN 201438446 U CN201438446 U CN 201438446U CN 2009200612106 U CN2009200612106 U CN 2009200612106U CN 200920061210 U CN200920061210 U CN 200920061210U CN 201438446 U CN201438446 U CN 201438446U
- Authority
- CN
- China
- Prior art keywords
- base
- push rod
- overcurrent protection
- protection device
- resets
- 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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Abstract
The utility model discloses a current overload protector. The current overload protector comprises an upper cover and a base which are fastened with each other, a dual metal plate is arranged in the base, one end of the dual metal plate is connected with a power output terminal, a movable contact is fixed on the other end of the dual metal plate, and a static contact is correspondingly arranged on a power input terminal; in addition, a restoring mechanism is arranged on the back of the dual metal plate; the restoring mechanism is mounted in the base, and comprises a restoring push rod and a spring mounted on the end of the restoring push rod, a power-off insulative isolating sheet on the restoring push rod is extended out along a direction which is perpendicular to the restoring push rod and nearly parallel with the dual metal plate and faces one side of the dual metal plate, and one end of the power-off insulative isolating sheet clings to the edge of the movable contact. The current overload protector integrates the power-off insulative isolating sheet with the restoring mechanism together, mounting and use are convenient, and the production efficiency is effectively increased; and meanwhile, since the internal connecting structure is simplified, the reliability of the current overload protector is enhanced as well.
Description
Technical field
The utility model relates to a kind of Electrical Safety protective device, and specifically a kind of current overload that prevents plays the overcurrent protection device of circuit protective effect.
Background technology
Along with China's rapid economy development, combined socket and switch is widely used in daily life, and the safety of combined socket and switch also more and more is subjected to people's attention.Common combined socket and switch in use; usually owing to reason such as the lack of standardization or route protection of the defective of circuit design, user power utilization is unreasonable, faults such as short circuit, current overload appear in circuit easily, cause electrical fire; cause people's property loss, threaten people's life security.
In order to prevent the generation of contingency, people have been provided with the current overload protection protection unit in combined socket and switch, can cut off the electricity supply automatically when abnormal conditions appear in circuit like this.And existing current overload protection protection unit ubiquity complex structure, volume are big, the shortcoming of job insecurity.Especially be installed in current overload protection protection unit in single switch or the socket for need, it is particularly outstanding that this shortcoming just seems.In addition, the reset button of existing current overload protection protection unit is many to be installed on the panel of switch together with shift knob, obscures with shift knob easily during use, makes troubles to the user.
The utility model content
Technical problem to be solved in the utility model provides a kind of overcurrent protection device simple for structure, esy to use, safe and reliable.
For solving the problems of the technologies described above, the utility model is realized by the following technical solutions:
Design a kind of overcurrent protection device, the loam cake and the base that comprise mutual snapping, power input terminal and power output terminal are installed on the base and stretch out in base, establish bimetal leaf in the described base, bimetal leaf one end is connected with power output terminal, the other end sets firmly moving contact, and the fixed contact correspondence is located on the power input terminal; Establish resetting device in the dorsal part position of bimetal leaf in addition, described resetting device is installed in the base, and resetting device one side one is extended outage insulation holly strip, and the described outage insulation holly strip other end is posted by the moving contact edge.
Concrete, described resetting device comprises the push rod that resets, is installed on the spring on the push rod termination that resets, and described outage insulation holly strip is vertical with the push rod that resets, extend towards bimetal leaf one side and with bimetal leaf is substantially parallel; The described not end protuberate basic unit sidewall of mounting spring of push rod that resets; One end of the described push rod mounting spring that resets is established U type groove; Spring one end is connected in the U type groove, and the other end is socketed on the projection of base side wall.
Described loam cake and base adopt barb and groove structure snapping.
Electric current overcurrent protection device described in the utility model is series in the supply line, and the supply line abnormal overload is carried out protection, and will cut off the power supply insulate holly strip and resetting device of its inside is provided with in aggregatesly, easy to install, effectively enhances productivity; Owing to the simplification of inner connecting structure, also increased the reliability of electric current overcurrent protection device simultaneously.
Description of drawings
Accompanying drawing 3 is another angle schematic diagrames of the utility model embodiment internal structure;
Accompanying drawing 4 is the utility model example structure explosive views;
Accompanying drawing 5 is the utility model embodiment resetting device front schematic view.
Embodiment
For the ease of those skilled in the art's understanding, the utility model structural principle is further described in detail below in conjunction with specific embodiment and accompanying drawing:
Shown in accompanying drawing 1～4, described overcurrent protection device includes loam cake 1 and base 2, and loam cake 1 and base 2 adopt barb 11 and groove 22 structures to snap together.Power input terminal 31 and power output terminal 32 are installed on the base 2, are easy-to-connect, power input terminal 31 and power output terminal 32 protuberate basic units 2.The utility model adopts the common bimetal leaf structure with kick characteristic to realize overcurrent protection.Described pot shape bimetal leaf 5 one ends are riveted on the power output terminal 32, and other end riveted joint has moving contact 62, and fixed contact 61 is riveted on the power input terminal 31.
Establish resetting device in the base 2, resetting device comprises reset push rod 41 and back-moving spring 42, for
Allow and reset that push rod 41 is convenient to be used, open installing port in the place, side of base 2, the push rod 41 that resets stretches out this installing port.The another side relative with a side of opening installing port at base 2 is provided with a boss 21, and spring 42 1 ends are socketed on the boss 21, and the other end is fixed on push rod 41 terminations that reset.A U type groove 411 is established in push rod 41 terminations that reset, and spring 42 is connected to 411 li of U type grooves.
Vertical in push rod 41 upper edges that reset with the push rod that resets, extend outage insulation holly strip 43 towards bimetal leaf 5 one sides and with the substantially parallel direction of bimetal leaf.Outage insulation holly strip 43 1 ends are posted by moving contact 61 edges, are propped up by moving contact 61.During installation, outage insulation holly strip 43 is propped up by moving contact 61, and spring 42 is in confined state, and the resistance of spring reset power and moving contact 61 balances each other.
During use; described overcurrent protection device is series in switch or the socket power input circuit; when switch or socket normal power-up; electric current passes through overcurrent protection device power input terminal 31 successively, fixed contact 61, moving contact 62, pot pot shape bimetal leaf 5, power output terminal 32 normal outwards power supplies.
When situations such as power supply generation abnormal conditions are short-circuited; electric current through pot shape bimetal leaf 5 sharply increases; under the heating effect of current effect, produce heat; when reaching uniform temperature; kick takes place in pot shape bimetal leaf 5; drive overcurrent protection device moving contact 62 and jump out of overcurrent protection device fixed contact 61, with dump.Simultaneously, outage insulation holly strip 43, is pushed between overcurrent protection device fixed contact 61 and the overcurrent protection device moving contact 62 supply line is cut off under the interlock effect of the push rod 41 that resets by the elastic force of spring 42.
After the outage, heating effect of current stops, and pot shape bimetal leaf 5 temperature descend gradually, and when dropping to uniform temperature, pot shape bimetal leaf 5 restores to the original state.Overcurrent protection device fixed contact 62 and overcurrent protection device moving contact 61 reset, but under the effect of outage insulation holly strip 43, and both can't conducting, so just can prevent that fault from not getting rid of and repeat overload.After fixing a breakdown; need to recover energising; the promotion push rod 41 that resets overcomes the elastic force of spring 42; make spring 42 compressions; and then outage insulation holly strip 43 is left between overcurrent protection device fixed contact 61 and the overcurrent protection device moving contact 62; overcurrent protection device fixed contact 62 and overcurrent protection device moving contact 61 are directly closed, and power on circuitry is recovered operate as normal.
Certainly, overcurrent protection device described in the utility model not only can be installed in single switch or the socket, and equally also being applicable to anyly has in the supply line that needs.
Claims (5)
1. overcurrent protection device, the loam cake (1) and the base (2) that comprise mutual snapping, power input terminal (31) and power output terminal (32) are installed on base (2) and go up and stretch out in base (2), it is characterized in that: establish bimetal leaf (5) in the base (2), bimetal leaf (5) one ends are connected with power output terminal (32), the other end sets firmly moving contact (61), and fixed contact (62) correspondence is located on the power input terminal (31); Establish resetting device in the dorsal part position of bimetal leaf (5) in addition, described resetting device is installed in the base (2), resetting device one side one is extended outage insulation holly strip (43), and described outage insulation holly strip (43) other end is posted by moving contact (61) edge.
2. overcurrent protection device according to claim 1; it is characterized in that: described resetting device comprises the push rod that resets (41), is installed on the spring (42) on the push rod that resets (41) termination, described outage insulation holly strip (43) is vertical with the push rod that resets (41), towards bimetal leaf (5) one sides and with substantially parallel the extending of bimetal leaf (5).
3. overcurrent protection device according to claim 2 is characterized in that: end protuberate basic unit (a 2) sidewall of the last mounting spring of the described push rod that resets (41).
4. overcurrent protection device according to claim 3 is characterized in that: an end of the described push rod that resets (41) mounting spring (42) is established U type groove (411); Spring (42) one ends are connected in the U type groove (411), and the other end is socketed on the projection (21) of base (2) sidewall.
5. according to each described overcurrent protection device of claim 1～4, it is characterized in that: described loam cake (1) and base (2) adopt barb and groove structure snapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200612106U CN201438446U (en) | 2009-07-24 | 2009-07-24 | Current overload protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200612106U CN201438446U (en) | 2009-07-24 | 2009-07-24 | Current overload protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201438446U true CN201438446U (en) | 2010-04-14 |
Family
ID=42400418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200612106U Expired - Fee Related CN201438446U (en) | 2009-07-24 | 2009-07-24 | Current overload protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201438446U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709731A (en) * | 2012-05-04 | 2012-10-03 | 东莞高得电工器材有限公司 | Power socket used for preventing electric shock |
| CN108321013A (en) * | 2018-02-07 | 2018-07-24 | 佛山市顺德区汇控电器制造有限公司 | A kind of anti-reset temperature controller of duplicate protection |
| CN110061485A (en) * | 2018-05-22 | 2019-07-26 | 国家电网有限公司 | Protective device is used in a kind of inhibition of transformer DC magnetic bias |
| WO2022126371A1 (en) * | 2020-12-14 | 2022-06-23 | 杭州冬蝉温控设备有限公司 | Novel overload protection switch |
-
2009
- 2009-07-24 CN CN2009200612106U patent/CN201438446U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709731A (en) * | 2012-05-04 | 2012-10-03 | 东莞高得电工器材有限公司 | Power socket used for preventing electric shock |
| CN108321013A (en) * | 2018-02-07 | 2018-07-24 | 佛山市顺德区汇控电器制造有限公司 | A kind of anti-reset temperature controller of duplicate protection |
| CN108321013B (en) * | 2018-02-07 | 2024-02-09 | 佛山市顺德区汇控电器制造有限公司 | Dual-protection reset-prevention temperature controller |
| CN110061485A (en) * | 2018-05-22 | 2019-07-26 | 国家电网有限公司 | Protective device is used in a kind of inhibition of transformer DC magnetic bias |
| CN110061485B (en) * | 2018-05-22 | 2021-05-04 | 国家电网有限公司 | Protection device for transformer direct current magnetic bias suppression |
| WO2022126371A1 (en) * | 2020-12-14 | 2022-06-23 | 杭州冬蝉温控设备有限公司 | Novel overload protection switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Qiangyun Inventor after: Liu Guoxin Inventor before: Xu Qiangli Inventor before: Liu Guoxin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XU QIANGLI LIU GUOXIN TO: XU QIANGYUN LIU GUOXIN |
|
| C56 | Change in the name or address of the patentee |
Owner name: HUIZHOU DEDO TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HUIZHOU DIANDAO TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 516006 Guangdong province Huizhou City Zhongkai high tech Zone Technology Innovation Center 302 Patentee after: HUIZHOU DEDO SCIENCE & TECHNOLOGY CO., LTD. Address before: 516003 Guangdong province Huizhou Jiangbei new industrial zone Patentee before: Huizhou Diandao Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20180724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |