CN105336552A - Circuit protector and production method thereof - Google Patents
Circuit protector and production method thereof Download PDFInfo
- Publication number
- CN105336552A CN105336552A CN201410389069.8A CN201410389069A CN105336552A CN 105336552 A CN105336552 A CN 105336552A CN 201410389069 A CN201410389069 A CN 201410389069A CN 105336552 A CN105336552 A CN 105336552A
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- China
- Prior art keywords
- conductor
- pin
- lever arm
- base plate
- top cover
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- Braking Elements And Transmission Devices (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The invention provides a circuit protector and a production method thereof. The circuit protector comprises an insulation top cover, a first conductor, a first pin, an insulation base plate, a second conductor and a second pin, wherein the first conductor is embedded on the top cover, the first pin is formed by extending the first conductor out of the top cover, the second conductor is embedded on the base plate, the second pin is formed by extending the second conductor out of the base plate, the first pin and the second pin are oppositely arranged, an accommodating cavity is formed after the top cover and the base plate are fixed, the top of the accommodating cavity is provided with the first conductor, the bottom of the accommodating cavity is provided with the second cavity, a conductive movable arm, a bimetal sheet deformed with heat and a positive temperature coefficient (PTC) component are arranged in the accommodating cavity from top to bottom, one end of the movable arm is fixedly connected with the first conductor, and a bulge is arranged at the other end of the movable arm and serves as a movable contact. In the circuit protector, the first pin and the top cover, and the second pin and the base plate are integratedly designed, and the firmness of the circuit protector is improved.
Description
Technical field
The present invention relates to circuit brake, particularly relate to a kind of circuit brake and production method thereof.
Background technology
Circuit breaker type thermal protector combines the Common advantages of bimetal leaf and PTC, improves reliability.But the lever arm parts used in its thermal drivers mechanism extend to outside injection-moulded housing and serve as side pin, when pin be subject to longitudinal pulling force appropriate to the occasion deviate from, cause whole circuit brake normally not use.
Chinese patent 201110457077.8 discloses a kind of self-hold over-current protection device of more reliable performance, comprise plastic casing, can point deenergizing, PTC element, bimetallic element four part, deenergizing can be divided in series by movable electrode, moving contact, fixed contact and fixed electrode; The hollow cavity that plastic casing is formed is separated into two cavitys side by side, and a cavity places PTC element and another cavity places bimetal leaf; PTC element is that current-carrying type is installed, and can disjunction circuit in parallel; Bimetal leaf is that non-current-carrying type is installed, self is not connected into circuit, for the disjunction of point deenergizing and conducting providing actuating force, under normal condition, the parallel circuits that electric current is made up of sound contact and PTC element flows through, bi-metal plate deformed time abnormal, bring the displacement of movable electrode, thus cut-out can divide deenergizing, when bi-metal plate deformed is recovered, the displacement of movable electrode recovers, thus can disjunction circuit turn-on; The normal temperature resistance of PTC element be no less than 100 times can the resistance of point deenergizing.The pin of this self-hold over-current protection device extends out from movable electrode, is easy to when it is subject to longitudinal pulling force.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of circuit brake and production method thereof, for solving the problem that in prior art, pin should come off.
For achieving the above object and other relevant objects, the invention provides a kind of circuit brake, it comprises:
The top cover of insulation, is embedded in the first conductor on top cover, and extends to by the first conductor the first pin that described top cover formed outward;
The base plate of insulation, is embedded in the second conductor on base plate, and extends to by the second conductor the second pin that described base plate formed outward, and described first pin and the second pin are oppositely arranged;
Described top cover and base plate close up rear formation containing cavity, the top of described containing cavity is described first conductor, the bottom of described containing cavity is described second conductor, the lever arm of conduction, the bimetal leaf of temperature distortion and PTC element is from top to bottom provided with in described containing cavity, one end and described first conductor of described lever arm are fixedly linked, and the other end of lever arm is provided with the projection as moving contact;
Under normal condition, described moving contact contacts with the second conductor, electric current is flowed out from the first pin after lever arm by the second pin, time abnormal, bimetal leaf temperature distortion, makes lever arm displacement, thus cuts off the connection between moving contact and the second conductor, electric current is flowed out from the first pin after PTC element, bimetal leaf, lever arm by the second pin, when bi-metal plate deformed is recovered, the displacement of lever arm recovers, thus moving contact and the second conductor contact conducting.
Preferably, described first conductor and described lever arm are equipped with location hole, and described base plate is provided with reference column, and reference column is located in described location hole, and the first conductor and lever arm is fixedly linked by welding.
Preferably, the location hole on described first conductor is positioned at the joining place of described first pin and the first conductor.
Preferably, described second conductor and the second pin joining place are provided with the rectangle platform as fixed contact, and under normal condition, described moving contact contacts with described rectangle platform.
Preferably, described first conductor has outer the first boss be exposed at outside described top cover upper surface.
Preferably, described second conductor has outer the second boss be exposed at outside described base plate lower surface.
The present invention also provides a kind of production method of circuit brake, and it adopts integrated punching moulding process to make the first conductor of band first pin and the second conductor of band the second pin respectively; First conductor and the second conductor are formed top cover and base plate respectively by injection molding process, and described first conductor is exposed in the bottom surface of top cover, the end face of base plate exposes described second conductor, and the first pin and the second pin all expose; One end of lever arm is welded and fixed with the first conductor and is formed to conduct and is connected, the second conductor from bottom to top stacks the bimetal leaf of PTC element, temperature distortion; Finally the top cover of band lever arm and base plate are closed up and be fixedly linked, after fixing, the other end of lever arm is contacted with the second conductor, the first pin becomes relative status with the second pin.
Preferably, the joining place of described first conductor and the first pin is provided with location hole, described lever arm is provided with location hole, described lever arm is provided with location hole, reference column on base plate is located in described two location holes, and described first conductor and lever arm conduct connection by being welded and fixed and being formed.
Preferably, described first conductor has first boss raised up, after injection mo(u)lding, described first boss exposes.
Preferably, described second conductor has second boss to lower convexity, after injection mo(u)lding, described second boss exposes.
As mentioned above; the production method of circuit brake of the present invention and production method thereof; there is following beneficial effect: adopt and the first pin and top cover, the second pin and base plate are set to one respectively; substitute existing pin to draw by lever arm; even if when circuit brake is subject to longitudinal pulling force; pin also can not come off, and improves the fastness of circuit brake.
Accompanying drawing explanation
Fig. 1 is shown as circuit brake schematic diagram of the present invention.
Fig. 2 is shown as top cover of the present invention and lever arm relative position schematic diagram.
Fig. 3 is shown as circuit brake normally view of the present invention.
Fig. 4 is shown as the abnormal off-state schematic diagram of circuit brake of the present invention.
Fig. 5 is shown as the concrete structure figure of described top cover of the present invention.
Element numbers explanation
1 first pin
2 first conductors
21 location holes
22 first boss
3 top covers
4 lever arms
41 location holes
42 moving contacts
5 bimetal leafs
6PTC element
7 second conductors
8 base plates
9 second pins
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 5.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, the invention provides a kind of circuit brake, it comprises:
The top cover 3 of insulation, is embedded in the first conductor 2 on top cover 3, and extends to outer the first pin 1 formed of top cover 3 by the first conductor 2;
The base plate 8 of insulation, is embedded in the second conductor 7 on base plate 8, and extends to outer the second pin 9 formed of base plate 8 by the second conductor 7, and the first pin 1 and the second pin 9 are oppositely arranged;
Top cover 3 and base plate 8 close up fixing after form containing cavity, the top of containing cavity is the first conductor 2, the bottom of containing cavity is the second conductor 8, the lever arm 4 of conduction, the bimetal leaf 5 of temperature distortion and PTC element 6 is from top to bottom provided with in containing cavity, one end and first conductor 2 of lever arm 4 are fixedly linked, and the other end of lever arm 4 is provided with the projection (see Fig. 2) as moving contact 42;
Under normal condition, moving contact 42 contacts with the second conductor 7, as shown in Figure 3, electric current is flowed out from the first pin 1 after lever arm 4 by the second pin 9, bimetal leaf 5 temperature distortion time abnormal, make lever arm 4 displacement, thus the connection cut off between moving contact 42 and the second conductor 7, as shown in Figure 4, electric current is flowed out from the first pin 1 after PTC element 6, bimetal leaf 5, lever arm 4 by the second pin 9, when bimetal leaf 5 recoverable force, the displacement of lever arm 4 recovers, thus moving contact 42 contacts conducting with the second conductor 7.
The present invention is by the first pin 1 and the first conductor 2, second pin 9 and the second conductor 7 integral production respectively; top cover 3 and base plate 8 is formed again by injection moulding; substitute the structure that existing pin is extended out from lever arm; avoid the problem that pin is deviate from when circuit brake is subject to longitudinal pulling force, improve the fastness of whole circuit brake.Above-mentioned first conductor 2 and the second conductor 7 select metallic copper in the present embodiment, also can be other conducting metals.
For ease of the connection of lever arm 4 with top cover 3, as shown in Figure 2, above-mentioned first conductor 2 and lever arm 4 are equipped with location hole 21,41, base plate 8 is provided with reference column, reference column is located in described location hole 21,42, and by welding, the first conductor 2 and lever arm 4 are fixedly linked, make both be formed and conduct structure.For ease of implementing, the location hole 21 on above-mentioned first conductor 2 is positioned at the joining place of the first pin 1 and the first conductor 2.
Above-mentioned second conductor 7 and the second pin 9 joining place are provided with the rectangle platform as fixed contact, and under normal condition, moving contact 42 contacts with rectangle platform, form sound contact conducting state (as shown in Figure 3).
As shown in Figure 5, above-mentioned first conductor 2 has outer the first boss 22 be exposed at outside top cover upper surface.Second conductor 7 has outer the second boss be exposed at outside base plate lower surface.First boss 22 and the second boss can use as electrode, are convenient to connect.
The present invention also provides a kind of production method of circuit brake, and the concrete structure of this circuit brake is described above, and it adopts integrated punching moulding process to make the first conductor 2 of band first pin 1 and the second conductor 7 of band the second pin 9 respectively; First conductor 2 and the second conductor 7 are formed top cover 3 and base plate 8 respectively by injection molding process, and the first conductor 2 is exposed in the bottom surface of top cover 3, the end face of base plate 8 exposes the second conductor 7, first pin 1 and the second pin 9 all exposes; One end of lever arm 4 is welded and fixed with the first conductor 2 and is formed to conduct and is connected, the second conductor 7 from bottom to top stacks the bimetal leaf 5 of PTC element 6, temperature distortion; Finally the top cover 3 of band lever arm 4 is closed up with base plate 8 and be fixedly linked, after fixing, the other end of lever arm 4 is contacted with the second conductor 7, the first pin 1 and the second pin 9 one-tenth relative status.
The present invention produces the conductor of band pin by punch forming process when producing; i.e. the first conductor 2 and the second conductor 7; and then by injection mo(u)lding, the first conductor 2 and the second conductor 7 are embedded on top cover 3 and base plate 8; two pins (i.e. above-mentioned first pin 1, second pin 9) can not be deviate from when receiving longitudinal pulling force, improving the fastness of circuit brake.In the present embodiment, above-mentioned bimetal leaf 5 is normally the case of bending for upwards dimpling, and after being heated, bimetal leaf 5 becomes recessed case of bending, and its edge is by lever arm 4 jack-up.
Above-mentioned first conductor 2 has first boss 22 raised up, after injection mo(u)lding, the first boss 22 exposes (as shown in Figure 5).Above-mentioned second conductor 7 also has second boss to lower convexity, after injection mo(u)lding, the second boss exposes.First boss and the second boss can use as electrode, are connected in circuit.
When ambient temperature is lower than design temperature, bimetal leaf 5 epirelief, its edge does not have actuating force to lever arm 4.The fixed contact that now lever arm 4 relies on natural resiliency to be pressed in by moving contact 42 on second conductor 7 forms electrical contact, and namely shown in Fig. 3, in figure, the direction of arrow is current direction.
When ambient temperature exceedes design temperature, enter the condition of high temperature, bimetal leaf 5 is reversed to recessed, two end in contact of its edge and lever arm 4, the movable end of lever arm 4 is produced to actuating force and raised, and now moving contact 42 departs from fixed contact, and electrical contact disconnects, namely, shown in Fig. 4, in figure, the direction of arrow is current direction.
In sum; circuit brake of the present invention and production method thereof; adopt and the first pin and top cover, the second pin and base plate are all the integrated design; substitute existing pin to draw by lever arm; even if when circuit brake is subject to longitudinal pulling force; pin also can not come off, and improves the fastness of circuit brake.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a circuit brake, is characterized in that, comprising:
The top cover (3) of insulation, is embedded in the first conductor (2) on top cover (3), and extends to by the first conductor (2) the first pin (1) that described top cover (3) formed outward;
The base plate (8) of insulation, be embedded in the second conductor (7) on base plate (8), and extend to by the second conductor (7) the second pin (9) that described base plate (8) formed outward, and described first pin (1) and the second pin (9) are oppositely arranged;
Described top cover (3) and base plate (8) close up rear formation containing cavity, the top of described containing cavity is described first conductor (2), the bottom of described containing cavity is described second conductor (7), the lever arm (4) of conduction, the bimetal leaf (5) of temperature distortion and PTC element (6) is from top to bottom provided with in described containing cavity, one end and described first conductor (2) of described lever arm (4) are fixedly linked, and the other end of lever arm (4) is provided with the projection as moving contact (42);
Under normal condition, described moving contact (42) contacts with the second conductor (7), electric current is flowed out from the first pin (1) after lever arm (4) by the second pin (9), bimetal leaf (5) temperature distortion time abnormal, make lever arm (4) displacement, thus the connection cut off between moving contact (42) and the second conductor (7), electric current by the second pin (9) through PTC element (6), bimetal leaf (5), flow out from the first pin (1) after lever arm (4), when bimetal leaf (5) recoverable force, the displacement of lever arm (4) recovers, thus moving contact (42) contacts conducting with the second conductor (7).
2. circuit brake according to claim 1; it is characterized in that: described first conductor (2) and described lever arm (4) are equipped with location hole; described base plate is provided with reference column; reference column is located in described location hole, and the first conductor (2) and lever arm (4) is fixedly linked by welding.
3. circuit brake according to claim 2, is characterized in that: the location hole on described first conductor (2) is positioned at the joining place of described first pin (1) and the first conductor (2).
4. circuit brake according to claim 1; it is characterized in that: described second conductor (7) and the second pin (9) joining place are provided with the rectangle platform as fixed contact; under normal condition, described moving contact (42) contacts with described rectangle platform.
5. circuit brake according to claim 1, is characterized in that: described first conductor (2) has outer the first boss (22) be exposed at outside described top cover upper surface.
6. circuit brake according to claim 1, is characterized in that: described second conductor (7) has outer the second boss be exposed at outside described base plate lower surface.
7. a production method for circuit brake, is characterized in that: adopt integrated punching moulding process to make first conductor (2) of band first pin (1) and second conductor (7) of band the second pin (9) respectively; First conductor (2) and the second conductor (7) are formed top cover (3) and base plate (8) respectively by injection molding process, and described first conductor (2) is exposed in the bottom surface of top cover (3), the end face of base plate (8) exposes described second conductor (7), and the first pin (1) and the second pin (9) all expose; One end of lever arm (4) is welded and fixed with the first conductor (2) and is formed to conduct and is connected, the second conductor (7) from bottom to top stacks the bimetal leaf (5) of PTC element (6), temperature distortion; Finally the top cover (3) with lever arm (4) and base plate (8) are closed up fixing, after fixing, the other end of lever arm (4) is contacted with the second conductor (7), the first pin (1) becomes relative status with the second pin (9).
8. the production method of circuit brake according to claim 7; it is characterized in that: the joining place of described first conductor (2) and the first pin (1) is provided with location hole; described lever arm (4) is provided with location hole; reference column on base plate is located in described two location holes, and described first conductor (2) and lever arm (4) conduct connection by being welded and fixed and being formed.
9. the production method of circuit brake according to claim 1; it is characterized in that: described first conductor (2) has first boss (22) raised up, after injection mo(u)lding, described first boss (22) is exposed.
10. the production method of circuit brake according to claim 1, is characterized in that: described second conductor (7) has second boss to lower convexity, after injection mo(u)lding, described second boss exposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389069.8A CN105336552A (en) | 2014-08-08 | 2014-08-08 | Circuit protector and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389069.8A CN105336552A (en) | 2014-08-08 | 2014-08-08 | Circuit protector and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105336552A true CN105336552A (en) | 2016-02-17 |
Family
ID=55287007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410389069.8A Pending CN105336552A (en) | 2014-08-08 | 2014-08-08 | Circuit protector and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105336552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597927A (en) * | 2018-01-23 | 2018-09-28 | 东莞市贝特电子科技股份有限公司 | A kind of manufacturing process of open type temperature controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002163965A (en) * | 2000-11-22 | 2002-06-07 | Texas Instr Japan Ltd | Thermal protector |
| CN101983411A (en) * | 2008-04-10 | 2011-03-02 | 打矢恒温器株式会社 | External operation thermal protector |
| CN102568958A (en) * | 2011-12-31 | 2012-07-11 | 上海长园维安电子线路保护股份有限公司 | Self-hold over-current protection device |
| CN202454497U (en) * | 2012-02-11 | 2012-09-26 | 梁安明 | Thermal protector |
| WO2013058362A1 (en) * | 2011-10-20 | 2013-04-25 | タイコエレクトロニクスジャパン合同会社 | Protection device |
| JP2013152826A (en) * | 2012-01-24 | 2013-08-08 | Otsuka Techno Kk | Breaker |
| JP3185917U (en) * | 2013-04-19 | 2013-09-12 | タイコエレクトロニクスジャパン合同会社 | Protective device |
| CN103460327A (en) * | 2011-04-15 | 2013-12-18 | 小松电子部品有限公司 | Thermal protector and battery using same |
-
2014
- 2014-08-08 CN CN201410389069.8A patent/CN105336552A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002163965A (en) * | 2000-11-22 | 2002-06-07 | Texas Instr Japan Ltd | Thermal protector |
| CN101983411A (en) * | 2008-04-10 | 2011-03-02 | 打矢恒温器株式会社 | External operation thermal protector |
| CN103460327A (en) * | 2011-04-15 | 2013-12-18 | 小松电子部品有限公司 | Thermal protector and battery using same |
| WO2013058362A1 (en) * | 2011-10-20 | 2013-04-25 | タイコエレクトロニクスジャパン合同会社 | Protection device |
| CN102568958A (en) * | 2011-12-31 | 2012-07-11 | 上海长园维安电子线路保护股份有限公司 | Self-hold over-current protection device |
| JP2013152826A (en) * | 2012-01-24 | 2013-08-08 | Otsuka Techno Kk | Breaker |
| CN202454497U (en) * | 2012-02-11 | 2012-09-26 | 梁安明 | Thermal protector |
| JP3185917U (en) * | 2013-04-19 | 2013-09-12 | タイコエレクトロニクスジャパン合同会社 | Protective device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597927A (en) * | 2018-01-23 | 2018-09-28 | 东莞市贝特电子科技股份有限公司 | A kind of manufacturing process of open type temperature controller |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20160217 |