CN104752114A - Overcurrent, overload and overheat protector - Google Patents
Overcurrent, overload and overheat protector Download PDFInfo
- Publication number
- CN104752114A CN104752114A CN201510190282.0A CN201510190282A CN104752114A CN 104752114 A CN104752114 A CN 104752114A CN 201510190282 A CN201510190282 A CN 201510190282A CN 104752114 A CN104752114 A CN 104752114A
- Authority
- CN
- China
- Prior art keywords
- movable contact
- contact spring
- assembly
- overload
- overcurrent
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/121—Protection of release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
- H01H71/164—Heating elements
Landscapes
- Thermally Actuated Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an overcurrent, overload and overheat protector, comprising a shell, an insulating holder, a moving spring component, and a fixed contact component. The insulating holder is mounted within the shell. The moving spring component is mounted on the upper portion of the insulating holder. The fixed contact component is mounted on the lower portion of the insulating holder. The moving spring component is serially connected with the fixed contact component. The moving spring component is provided with a moving contact. The fixed contact component is provided with a fixed contact. When the interior temperature of the shell is higher than a set value or overcurrent or overload occurs, the moving spring component drives the moving contact to pop up and separate from the fixed contact, thus driving the moving spring component to break with the fixed contact component. The overcurrent, overload and overheat protector has the advantages that a PTC (positive temperature coefficient) heating film is mounted in the shell, the PTC heating film is connected with an external power supply when the moving contact pops up and separates from the fixed contact, the protector is avoided being on or off repeatedly, and electrical safety can be guaranteed.
Description
Technical field
The present invention relates to a kind of mechanical power control, more particularly, relate to a kind of for electrical equipment, motor, switch etc. carry out the protector of overcurrent, overload, overtemperature protection in control circuit.
Background technology
Current over-load protector is widely used in various circuit, and when the electric current in circuit exceedes set point, energy is open-circuit line in time, plays a protective role, improve Electrical Safety to the timely power consumption equipment of circuit.There is following defect in existing current over-load protector:
1, the conducting realizing current over-load protector that traditional current over-load protector is generally connected with spring by pull bar or open circuit, complex structure, production cost is high, and useful life is short;
2, traditional current over-load protector lacks maltilevel security defencive function; current over-load protector open circuit when current overload occurs; if circuit or power consumption equipment fault are not eliminated; again can conducting automatically after certain hour; certain hour after-current overload protective device again can open circuit; therefore can not automatically control until just work after circuit or power consumption equipment Failure elimination, existence repeats the state of conducting or open circuit, can not guarantee Electrical Safety.
Summary of the invention
The object of the invention is to overcome above-mentioned defect of the prior art, provide that a kind of structure is simple, production cost is low, long service life, and there is not the state of repetition conducting or open circuit, the overcurrent of Electrical Safety, overload, overheat protector can be guaranteed.
For achieving the above object, technical scheme provided by the invention is as follows:
A kind of overcurrent, overload, overheat protector; comprise housing; also comprise the insulation holder be installed in housing; be installed in the movable contact spring assembly on insulation holder top; be installed in the static contact assembly of insulation holder bottom; described movable contact spring assembly and static contact assembly are connected in series; described movable contact spring assembly is equiped with moving contact; described static contact assembly is equiped with fixed contact; when temperature in housing is higher than set point; movable contact spring assembly makes moving contact upspring to be separated with fixed contact, thus makes movable contact spring assembly and the open circuit of static contact assembly.
Furthermore, described movable contact spring assembly comprises movable contact spring, movable contact spring is provided with the first limiting plate and the second limiting plate, form the first screens between first limiting plate and movable contact spring, form the second screens between the second limiting plate and movable contact spring, movable contact spring top is placed with bimetal leaf, one end of bimetal leaf is stretched in the first screens, the other end of bimetal leaf stretches in the second screens, and movable contact spring one end is fixedly connected with insulation holder, and the movable end of movable contact spring is equiped with moving contact.
Furthermore, described static contact assembly comprises the first electric sheet, the second electric sheet that are installed on insulation holder, and the heating wire be connected in series with the first electric sheet and the second electric sheet, the movable end of the second electric sheet is equiped with fixed contact.
Further, described housing is also equiped with PTC heating film, and this PTC heating film is connected with movable contact spring assembly and static contact modules in parallel, when moving contact upspring be separated with fixed contact time, described PTC heating film and external power supply are conducted.
The beneficial effect of overcurrent of the present invention, overload, overheat protector is; by constructing a housing; insulation holder is equiped with in housing; insulation holder top is equiped with movable contact spring assembly; insulation holder bottom is equiped with static contact assembly; described movable contact spring assembly and static contact assembly are connected in series; described movable contact spring assembly is equiped with moving contact; described static contact assembly is equiped with fixed contact; when temperature in housing is higher than set point; movable contact spring assembly makes moving contact upspring to be separated with fixed contact, thus makes movable contact spring assembly and the open circuit of static contact assembly.Greatly can simplify the structure of product, structure is simple, and production cost is low, long service life; By at housing installing PTC heating film, when moving contact upspring be separated with fixed contact time, described PTC heating film and external power supply are conducted, and prevent the state of protector repetition conducting or open circuit, can guarantee Electrical Safety.
Below in conjunction with drawings and Examples, overcurrent of the present invention, overload, overheat protector are described further:
Accompanying drawing explanation
Fig. 1 is the front view of overcurrent of the present invention, overload, overheat protector;
Fig. 2 is the decomposition chart of overcurrent of the present invention, overload, overheat protector;
Fig. 3 is the cutaway view of overcurrent of the present invention, overload, overheat protector.
Embodiment
Be below the most preferred embodiment of overcurrent of the present invention, overload, overheat protector, therefore do not limit protection scope of the present invention.
Please refer to Fig. 1, Fig. 2 and Fig. 3, there is shown a kind of overcurrent, overload, overheat protector, comprise housing 1, also comprise the insulation holder 2 be installed in housing 1, be installed in the movable contact spring assembly 3 on insulation holder 2 top, be installed in the static contact assembly 4 of insulation holder 2 bottom, described movable contact spring assembly 3 is connected in series with static contact assembly 4, described movable contact spring assembly 3 is equiped with moving contact 5, described static contact assembly 4 is equiped with fixed contact 6, when temperature in housing 1 is higher than set point or overcurrent, during overload, movable contact spring assembly 3 makes moving contact 5 upspring to be separated with fixed contact 6, thus make movable contact spring assembly 3 and static contact assembly 4 open circuit.
In this enforcement, as preferably, described movable contact spring assembly 3 comprises movable contact spring 31, movable contact spring 31 is provided with the first limiting plate 311 and the second limiting plate 312, the first screens 7 is formed between first limiting plate 311 and movable contact spring 31, the second screens 8 is formed between second limiting plate 312 and movable contact spring 31, movable contact spring 31 top is placed with bimetal leaf 32, one end of bimetal leaf 32 is stretched in the first screens 7, the other end of bimetal leaf 32 stretches in the second screens 8, movable contact spring 31 one end is fixedly connected with insulation holder 2, the movable end of movable contact spring 31 is equiped with moving contact 5, the first screens 7 formed by the first limiting plate 311 and the second limiting plate 312 and movable contact spring 31 and the second screens 8 pairs of movable contact spring 31 two ends are carried out spacing, make bimetal leaf 32, at circuit or power consumption equipment, overcurrent occur, overload, overheated and when there is deformation, the active force that bimetal leaf 32 is produced can fully act on movable contact spring 31, movable contact spring 31 pops up and makes moving contact 5 and fixed contact 6 open circuit.
In this enforcement, as preferably, described static contact assembly 4 comprises the first electric sheet 41 be installed on insulation holder 2, second electric sheet 42, the heating wire 43 be connected in series with the first electric sheet 41 and the second electric sheet 42, the movable end of the second electric sheet 42 is equiped with fixed contact 6, when the electric current of circuit or power consumption equipment exceedes rated current (namely transshipping), the electrothermal calefactive rate of heating wire 43 is accelerated, temperature in protection raises and transfers heat to bimetal leaf 32, making bimetal leaf 32 that deformation occur makes movable contact spring 31 pop up, make moving contact 5 and fixed contact 6 open circuit, thus overcurrent (the namely transshipping) protection realized circuit and power consumption equipment.
When ambient temperature exceedes design temperature, deformation occurs bimetal leaf 32 makes movable contact spring 31 pop up, and makes moving contact 5 and fixed contact 6 open circuit, thus realizes the overtemperature protection to circuit and power consumption equipment.
Furthermore, the bottom of described movable contact spring assembly 3 is equiped with insulator foot 9, this insulator foot 9 has spacing convex body 91, movable contact spring 31 is provided with the through hole that spacing convex body 91 adapts with this, movable contact spring 31 stretches out from this through hole and contacts with bimetal leaf 32, and spacing convex body 91 is for providing fulcrum when deformation occurs bimetal leaf 32.
Further, described housing 1 is also equiped with PTC heating film 10, this PTC heating film 10 is connected in parallel with movable contact spring assembly 3 and static contact assembly 4, when generation overcurrent, overload, when overheated moving contact 5 is upspring and is separated with fixed contact 6, described PTC heating film 10 is conducted with external power supply, PTC heating film 10 evolution of heat, for bimetal leaf 32 provides thermal source, bimetal leaf 32 is made to keep original deformation, off state is kept from making moving contact 5 be separated with fixed contact 6, only have after waiting until that user eliminates fault, and PTC heating film and power supply are disconnected, after bimetal leaf 32 cools naturally, moving contact 5 could contact and conducting with fixed contact 6, thus effectively prevent protector from duplicating the state of conducting or open circuit, guarantee Electrical Safety.
During use, movable contact spring assembly 3 is connected with circumscripted power line 11 with static contact assembly 4.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. an overcurrent, overload, overheat protector, comprise housing (1), it is characterized in that, also comprise the insulation holder (2) be installed in housing (1), be installed in the movable contact spring assembly (3) on insulation holder (2) top, be installed in the static contact assembly (4) of insulation holder (2) bottom, described movable contact spring assembly (3) and static contact assembly (4) are connected in series, described movable contact spring assembly (3) is equiped with moving contact (5), described static contact assembly (4) is equiped with fixed contact (6), when temperature in housing (1) is higher than set point or overcurrent, during overload, movable contact spring assembly (3) makes moving contact (5) upspring to be separated with fixed contact (6), thus make movable contact spring assembly (3) and static contact assembly (4) open circuit.
2. overcurrent according to claim 1, overload, overheat protector, it is characterized in that, described movable contact spring assembly (3) comprises movable contact spring (31), movable contact spring (31) is provided with the first limiting plate (311) and the second limiting plate (312), the first screens (7) is formed between first limiting plate (311) and movable contact spring (31), the second screens (8) is formed between second limiting plate (312) and movable contact spring (31), movable contact spring (31) top is placed with bimetal leaf (32), one end of bimetal leaf (32) is stretched in the first screens (7), the other end of bimetal leaf (32) stretches in the second screens (8), movable contact spring (31) one end is fixedly connected with insulation holder (2), the movable end of movable contact spring (31) is equiped with moving contact (5).
3. overcurrent according to claim 1, overload, overheat protector; it is characterized in that; described static contact assembly (4) comprises the first electric sheet (41), the second electric sheet (42) that are installed in insulation holder (2); the heating wire (43) be connected in series with the first electric sheet (41) and the second electric sheet (42), the movable end of the second electric sheet (42) is equiped with fixed contact (6).
4. overcurrent according to claim 2, overload, overheat protector; it is characterized in that; the bottom of described movable contact spring assembly (3) is equiped with insulator foot (9); this insulator foot (9) has spacing convex body (91); movable contact spring (31) is provided with the through hole that spacing convex body (91) adapts with this, and movable contact spring (31) stretches out from this through hole and contacts with bimetal leaf (32).
5. overcurrent according to claim 1, overload, overheat protector; it is characterized in that; described housing (1) is also equiped with PTC heating film (10); this PTC heating film (10) is connected in parallel with movable contact spring assembly (3) and static contact assembly (4); when moving contact (5) upspring be separated with fixed contact (6) time, described PTC heating film (10) and external power supply are conducted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190282.0A CN104752114A (en) | 2015-04-21 | 2015-04-21 | Overcurrent, overload and overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190282.0A CN104752114A (en) | 2015-04-21 | 2015-04-21 | Overcurrent, overload and overheat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104752114A true CN104752114A (en) | 2015-07-01 |
Family
ID=53591640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190282.0A Pending CN104752114A (en) | 2015-04-21 | 2015-04-21 | Overcurrent, overload and overheat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104752114A (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 |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050036726A (en) * | 2003-10-15 | 2005-04-20 | 알프스 덴키 가부시키가이샤 | Thermally actuated switch and method of manufacturing the same |
| CN201584365U (en) * | 2009-11-05 | 2010-09-15 | 张昊 | Overheating and overload protector |
| CN102157302A (en) * | 2011-03-18 | 2011-08-17 | 杭州富阳华裕控制电器厂 | Miniature bimetallic strip heat protector |
| CN202102964U (en) * | 2011-07-05 | 2012-01-04 | 朱天兵 | Outage delay overheat protector |
| CN202189729U (en) * | 2011-08-20 | 2012-04-11 | 浙江富风电器有限公司 | Miniature bimetallic strip thermal protector |
| CN203260531U (en) * | 2013-05-10 | 2013-10-30 | 梁嘉平 | Overheating power-off reset protector |
| CN103617928A (en) * | 2013-12-19 | 2014-03-05 | 上海长园维安电子线路保护有限公司 | Thin circuit protection device |
| CN203733715U (en) * | 2014-02-25 | 2014-07-23 | 南京海川电子有限公司 | Multifunctional motor protector |
| CN203799960U (en) * | 2014-03-06 | 2014-08-27 | 东莞市凯恩电子科技有限公司 | Temperature controllable protective tube |
| CN204117967U (en) * | 2014-07-28 | 2015-01-21 | 常州常胜精密电子有限公司 | Open type thermostat |
| CN204179013U (en) * | 2014-10-31 | 2015-02-25 | 梁安明 | A kind of thermal protector |
| CN204516710U (en) * | 2015-04-21 | 2015-07-29 | 姚家米 | Overcurrent, overload, overheat protector |
-
2015
- 2015-04-21 CN CN201510190282.0A patent/CN104752114A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050036726A (en) * | 2003-10-15 | 2005-04-20 | 알프스 덴키 가부시키가이샤 | Thermally actuated switch and method of manufacturing the same |
| CN201584365U (en) * | 2009-11-05 | 2010-09-15 | 张昊 | Overheating and overload protector |
| CN102157302A (en) * | 2011-03-18 | 2011-08-17 | 杭州富阳华裕控制电器厂 | Miniature bimetallic strip heat protector |
| CN202102964U (en) * | 2011-07-05 | 2012-01-04 | 朱天兵 | Outage delay overheat protector |
| CN202189729U (en) * | 2011-08-20 | 2012-04-11 | 浙江富风电器有限公司 | Miniature bimetallic strip thermal protector |
| CN203260531U (en) * | 2013-05-10 | 2013-10-30 | 梁嘉平 | Overheating power-off reset protector |
| CN103617928A (en) * | 2013-12-19 | 2014-03-05 | 上海长园维安电子线路保护有限公司 | Thin circuit protection device |
| CN203733715U (en) * | 2014-02-25 | 2014-07-23 | 南京海川电子有限公司 | Multifunctional motor protector |
| CN203799960U (en) * | 2014-03-06 | 2014-08-27 | 东莞市凯恩电子科技有限公司 | Temperature controllable protective tube |
| CN204117967U (en) * | 2014-07-28 | 2015-01-21 | 常州常胜精密电子有限公司 | Open type thermostat |
| CN204179013U (en) * | 2014-10-31 | 2015-02-25 | 梁安明 | A kind of thermal protector |
| CN204516710U (en) * | 2015-04-21 | 2015-07-29 | 姚家米 | Overcurrent, overload, overheat protector |
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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |
|
| RJ01 | Rejection of invention patent application after publication |