CN203038872U - Overcurrent short circuit protective device - Google Patents
Overcurrent short circuit protective device Download PDFInfo
- Publication number
- CN203038872U CN203038872U CN 201320035968 CN201320035968U CN203038872U CN 203038872 U CN203038872 U CN 203038872U CN 201320035968 CN201320035968 CN 201320035968 CN 201320035968 U CN201320035968 U CN 201320035968U CN 203038872 U CN203038872 U CN 203038872U
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- CN
- China
- Prior art keywords
- yoke
- short circuit
- overcurrent short
- magnet yoke
- rivets
- 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 - Lifetime
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Abstract
The utility model relates to the circuit breaker overcurrent short circuit protection technical field and in particular refers to an overcurrent short circuit protective device, comprising a magnet yoke, a thermal element, an armature body, a spring and a plurality of rivets. The thermal element is fixed to a support; tumblers at two ends of the armature body are respectively clamped at opening grooves at two ends of the magnet yoke, wherein the tumbler at one end is nested with a torsional spring; a torsion bar of the torsional spring is clamped to a rear rack step of the magnet yoke; the magnet yoke is provided with a plurality of fixing holes matching with the rivets; the rivets are closely nested in the fixing holes. In use, a product structure is optimized, which greatly reduces component quantity and assembling work and thereby reduces manufacture costs; meanwhile necessary protective functions can be guaranteed and reliability of product protective functions can be raised. The overcurrent short circuit protective device has the advantages of simple structure, reasonable arrangement, low manufacture costs, etc.
Description
Technical field
The utility model relates to the overcurrent short-circuit protection technical field of circuit breaker, particularly a kind of overcurrent short-circuit protection.
Background technology
Circuit breaker (English name: circuit-breaker; circuit breaker) refer to close and close, carry and cut-off electric current under the normal loop condition, and can close close, carrying and cut-off the switching device of the electric current under the unusual loop condition (comprising short circuit condition) in official hour.Circuit breaker can be used to distribute electric energy; do not start asynchronous motor continually; power circuit and motor etc. are carried out protection, can automatic shutdown circuit when serious overload or short circuit and fault such as under-voltage take place for their, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.And behind the disjunction fault current, generally do not need to change parts.At present, obtained to use widely.
The overcurrent short-circuit protection of existing popular circuit breaker on the market is made up of thermal element, armature body, spring and yoke that two supports and two supports fix usually, and the structure of complexity like this causes manufacturing procedure loaded down with trivial details, and the error of accumulation is bigger.Manufacturing cost height so not only, and be difficult to guarantee product high performance accurately.
So be necessary the structure of existing overcurrent short circuit is carried out technological innovation further.
The utility model content
The purpose of this utility model is at the defective of prior art and deficiency, and overcurrent short-circuit protection a kind of simple in structure, reasonable in design, easy to use is provided.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of overcurrent short-circuit protection described in the utility model comprises yoke, thermal element, armature body, spring and several rivets, and described thermal element is fixed on the yoke, and the pivoted arm at described armature body two ends is fastened on respectively on the support openings at two ends groove; Wherein the pivoted arm of an end is nested with torsion spring, the turning round on the after-frame step that bar is fastened on yoke of torsion spring, and described yoke is provided with the fixing hole that several and rivet match, and described rivet closely is nested in the fixing hole.
Further, the quantity of described rivet and fixing hole is two.
After adopting said structure, the utility model beneficial effect is: a kind of overcurrent short-circuit protection described in the utility model, comprise yoke, thermal element, armature body, spring and several rivets, described thermal element is fixed on the yoke, and the pivoted arm at described armature body two ends is fastened on respectively on the yoke openings at two ends groove; Wherein the pivoted arm of an end is nested with torsion spring, the turning round on the after-frame step that bar is fastened on yoke of torsion spring, and described yoke is provided with the fixing hole that several and rivet match, and described rivet closely is nested in the fixing hole.When using the utility model, after the structure of optimizing product, greatly reduce amount of parts and assembly work, thereby reduced manufacturing cost; Simultaneously can guarantee due defencive function, also can improve the defencive function reliability of product.The utlity model has simple in structurely, arrange rationally, advantage such as cost of manufacture is low.
Description of drawings
Fig. 1 is the not structural representation under the attracting state of armature of the present utility model;
Fig. 2 is the structural representation under the armature attracting state of the present utility model;
Description of reference numerals:
1, yoke; 11, fixing hole; 12, open slot; 13, after-frame step;
2, thermal element; 3, armature body; 31, pivoted arm; 32, armature block;
4, torsion spring; 41, turn round bar; 5, rivet.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, a kind of overcurrent short-circuit protection described in the utility model, comprise yoke 1, thermal element 2, armature body 3, spring 4 and several rivets 5, described thermal element 2 is fixed on the yoke 1, and the pivoted arm 31 at described armature body 3 two ends is fastened on respectively on the yoke 1 openings at two ends groove 12; Wherein the pivoted arm 31 of an end is nested with torsion spring 4, the turning round on the after-frame step 13 that bar 41 is fastened on yoke 1 of torsion spring 4, and described yoke 1 is provided with the fixing hole 11 that several and rivet 5 match, and described rivet 5 closely is nested in the fixing hole 11.
As a kind of optimal way of the present utility model, the quantity of described rivet 5 and fixing hole 11 is two.
Operation principle of the present utility model: as shown in Figure 2; when closing of power circuit breaker uses; when using circuit to be short-circuited; electric current moment sharply increases; the magnetic field of yoke 1 corresponding generation also urgent sharp increase is big; when up to magnetic field the suction-combining force of armature body 3 being enough to overcome the reaction force of torsion spring 4; yoke 1 is with armature block 32 adhesives of armature body 3; make the 3 upper end bendings of armature body promote dropout plate (not shown); the dropout strip is moved the circuit breaker transmission mechanism; thereby circuit breaker disconnects, and plays the effect of protection circuit.
During with the utility model protection electric equipment, not only can guarantee to play due defencive function, and the reliability of product protection function also is largely increased.In addition, this is simple in structure, reasonable in design, low cost of manufacture.
The above only is preferred embodiments of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (2)
1. overcurrent short-circuit protection, comprise yoke (1), thermal element (2), armature body (3), spring (4) and several rivets (5), described thermal element (2) is fixed on the yoke (1), it is characterized in that: the pivoted arm (31) at described armature body (3) two ends is fastened on respectively on yoke (1) the openings at two ends groove (12); Wherein the pivoted arm of an end (31) is nested with torsion spring (4), turning round on the after-frame step (13) that bar (41) is fastened on yoke (1) of torsion spring (4), described yoke (1) is provided with the fixing hole (11) that several and rivet (5) match, and described rivet (5) closely is nested in the fixing hole (11).
2. overcurrent short-circuit protection according to claim 1, it is characterized in that: the quantity of described rivet (5) and fixing hole (11) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035968 CN203038872U (en) | 2013-01-24 | 2013-01-24 | Overcurrent short circuit protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035968 CN203038872U (en) | 2013-01-24 | 2013-01-24 | Overcurrent short circuit protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203038872U true CN203038872U (en) | 2013-07-03 |
Family
ID=48690968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035968 Expired - Lifetime CN203038872U (en) | 2013-01-24 | 2013-01-24 | Overcurrent short circuit protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203038872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388316A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
-
2013
- 2013-01-24 CN CN 201320035968 patent/CN203038872U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388316A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
| CN114388316B (en) * | 2021-12-24 | 2024-03-12 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |