CN202126981U - Breaker and moving contact system thereof - Google Patents
Breaker and moving contact system thereof Download PDFInfo
- Publication number
- CN202126981U CN202126981U CN 201120224640 CN201120224640U CN202126981U CN 202126981 U CN202126981 U CN 202126981U CN 201120224640 CN201120224640 CN 201120224640 CN 201120224640 U CN201120224640 U CN 201120224640U CN 202126981 U CN202126981 U CN 202126981U
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- moving contact
- rotating shaft
- contact
- elastic component
- moving
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Abstract
The utility model relates to a moving contact system, comprising a moving contact and a rotating shaft. The moving contact is rotatably installed on the rotating shaft and at least a contact locking mechanism is arranged between the moving contact and the rotating shaft. The contact locking mechanism comprises an elastic piece and a bump arranged at the back of the moving contact. The first end of the elastic piece is connected with the moving contact and the second end of the elastic piece is supported inside the rotating shaft. The second end of the elastic piece is further connected with a suspension arm which leans against the bump in the rotating process of the moving contact. The moving contact system and the breaker with the structure provided by the utility model improve the breaking performance of the breaker, decrease the total number of parts and reduce the production cost.
Description
Technical field
The utility model relates to the low-voltage circuit breaker field, particularly a kind of moving contact system and the circuit breaker with this moving contact system.
Background technology
In the moving contact rotating shaft system in mold cased circuit breaker, all constitute in the moving contact rotating shaft system structure that adopts usually by rotating shaft, moving contact, extension spring, rotating shaft lid, floating axle, connecting rod, hanging spring shaft, locating shaft etc.In order to prevent to scold the moving contact of branch to fall, cause arc reignition, influence the interrupting performance of product, all adopted dropproof device.At present, in the mold cased circuit breaker in the contact rotating shaft system of double break point one pole modular construction, the dropproof device of employing all be through on a special-purpose hanging scroll and the moving contact or the positive stop lug boss in the rotating shaft or pit interact and realize dropproof performance.And this structure parts are many, but its installing space is less, and assembling is complicated, and therefore higher to the production and processing required precision, production efficiency is low.
The utility model content
The utility model problem to be solved provides a kind of moving contact system, overcomes the problems referred to above that exist in the prior art.
The moving contact system of the utility model comprises moving contact and rotating shaft, and moving contact is rotating to be installed in the rotating shaft; Between moving contact and rotating shaft, also be provided with at least one contact lockable mechanism, said contact lockable mechanism comprises an elastic component and a boss that is located at the moving contact back, and first end of elastic component links to each other with moving contact; Second end of elastic component is supported on rotating shaft inside; Second end of elastic component also connects a cantilever, and in the moving contact rotation process, said cantilever can be inconsistent with said boss.
The said rotating shaft of the utility model comprises at the bottom of the rotating shaft and the rotating shaft lid, and said moving contact is located in the cavity that surrounds with the rotating shaft lid at the bottom of the rotating shaft, at the bottom of being plugged in rotating shaft, its two ends of centre bore that a floating axle passes moving contact cover with rotating shaft,
Also be provided with mounting groove at the bottom of the said rotating shaft of the utility model, be connected with strutting piece in the mounting groove, the V-shaped bending of strutting piece, second end of said elastic component is supported in the said strutting piece.
The said elastic component of the utility model is a torsion spring, and said contact lockable mechanism also comprises the circular hole that is located on the moving contact, and first end of torsion spring is plugged in the circular hole.
Be provided with sleeve pipe in the said circular hole of the utility model, first end of said elastic component is plugged in the sleeve pipe.
The said elastic component of the utility model is a spring leaf, and said contact lockable mechanism also comprises the draw-in groove that is located on the moving contact, and first end of spring leaf also places in the said draw-in groove, and second end of spring leaf connects a kink, and said cantilever is made up of kink.
The said moving contact of the utility model is a double break point moving contact, and said contact lockable mechanism has two, and two contact lockable mechanisms are about movable contact head pivot point symmetric arrangement.
A kind of circuit breaker comprises fixed contact and moving contact system, and said moving contact system adopts above-described each moving contact system.
Through above technical scheme; Moving contact system of the utility model and the circuit breaker with this moving contact system match with boss on the moving contact through the cantilever of elastic component, prevent that moving contact from falling and make dynamic and static contact closed once more; Not only improved double-contact moving contact interrupting performance; And reduced the part number, and simplified pivot structure, reduced production cost.
Description of drawings
Fig. 1 the utility model moving contact system configuration schematic diagram.
The first example structure decomposing schematic representation of Fig. 2 the utility model moving contact system.
Structural representation at the bottom of the said rotating shaft of Fig. 3.
The structural representation of the said strutting piece of Fig. 4.
The structural representation of elastic component among Fig. 5 the utility model first embodiment.
The structural representation of moving contact among Fig. 6 the utility model first embodiment.
State diagram when Fig. 7 the utility model moving contact and fixed contact are closed.
State diagram when the cantilever on the said elastic component of Fig. 8 is colluding the boss on the moving contact.
Fig. 9 is an A place partial enlarged drawing among Fig. 8.
State diagram when the said moving contact of Figure 10 scolds branch to put in place.
Figure 11 is a B place partial enlarged drawing among Figure 10.
The second example structure figure of Figure 12 the utility model moving contact system.
The structural representation of elastic component among Figure 13 the utility model second embodiment.
The structural representation of moving contact among Figure 14 the utility model second embodiment.
Figure 15 the utlity model has the breaker structure sketch map of this pivot structure.
Embodiment
As shown in Figure 1; The moving contact system of a kind of circuit breaker of the utility model comprises moving contact 10 and rotating shaft; Moving contact is rotating to be installed in the rotating shaft, also comprises an elastic component 3 and a boss 101 that is located at the moving contact back, and first end of elastic component links to each other with moving contact 10; Second end of elastic component is supported on rotating shaft inside, and second end of elastic component also connects a cantilever 32.Above-mentioned elastic component 3 constitutes a contact lockable mechanism with boss 101, when this contact lockable mechanism is scolded out because of big electric current at moving contact, can block moving contact, and it is closed to avoid moving contact to fall formation once more after rise.Concrete type of action does, scolded out in the rotation process at moving contact, and cantilever 32 can be inconsistent with boss 101, and block moving contact, prevents that moving contact from falling after rise.
The utility model both can be applied in the single-break circuit breaker, also can be applied in the dual-interruption point breaker, in the circuit breaker of the moving contact system that also can be applicable to be made up of many groups contact.
Shown in Figure 2 is that the utility model is applied to first embodiment of double break point in opening circuit, and its moving contact is a double break point moving contact, comprises two contact lockable mechanisms.The moving contact system comprises at the bottom of moving contact 4, the rotating shaft 1,7, two elastic components of rotating shaft lid 3, two strutting pieces 2, two sleeve pipes 5 and floating axles 6.Moving contact 4 (see figure 6)s are provided with centre bore 43 at the center of rotation place, also are provided with two circular holes 42 and two boss 41 about centre bore 43 symmetries.Moving contact is rotating to be installed in the rotating shaft, and rotating shaft 1 is formed with rotating shaft lid 7 at the bottom of by rotating shaft.As shown in Figure 3,1 is respectively equipped with blind hole 11 with rotating shaft lid 7 at the bottom of the rotating shaft on relative position, and insert in the blind hole 11 at centre bore 43 two ends that floating axle 6 passes on the moving contact, and moving contact 4 can be rotated around floating axle.1 also is provided with the mounting groove 12 of two symmetries respectively with rotating shaft lid 7 at the bottom of the rotating shaft on relative position, places a strutting piece 2 in per two relative mounting grooves, and strutting piece 2 is for having the V-arrangement bending member (see figure 4) of bending curved surface 21.
As shown in Figure 5, elastic component 3 is a torsion spring, and first end 33 of torsion spring is plugged in the circular hole 42, and second end of torsion spring places in the strutting piece 2.Second end 31 of torsion spring connects cantilever 32, and torsion spring second end 31 contacts with the bending curved surface 21 of strutting piece.Two torsion springs are symmetrically distributed about the moving contact center of rotation, and in the moving contact rotation process, cantilever 32 can contact with boss 41.For cantilever is moved along moving contact, on moving contact, also be provided with edge curved surface 44, edge curved surface 44 is located at the back of boss 41 and links to each other with boss 41.
According to the needs of processing technology, sleeve pipe 5 is set in circular hole 42, first end 33 of torsion spring is plugged in the sleeve pipe 5.
The operation principle of the utility model is:
(see figure 7) under dynamic and static contact closure state; Elastic component 3 acts on the below that its traverse line of directed force F on the moving contact is positioned at circular hole 42 and centre bore 43 lines; Produce an anticlockwise moment; The active force that this moment, elastic component 3 acted on the moving contact 4 is a pressure, and elastic component provides contact pressure to keep dynamic and static contact closure.Under the electrodynamic repulsion force effect that short circuit current produces, moving contact 4 produces to separate and rotates, and this moment, moving contact 4 still received the contact pressure effect of elastic component 3; When moving contact continues rotation; Elastic component 3 acts on force direction line on the moving contact when being positioned at the top of circular hole 42 and centre bore 43 lines (seeing Figure 10 and Figure 11); Produce a clockwise moment; The active force that elastic component acts on the moving contact 4 becomes reversal interlocking relay, has accelerated the separating rate of moving contact 4, forwards maximum separation point position to until moving contact 4.If the moving contact 4 of scolding branch to put in place is rotated further, then owing to the impact effect of the edge curved surface 44 on elastic component 3 upper cantilevers 32 and the moving contact 4, elastic component plays the function (seeing Figure 10 and Figure 11) of buffering energy-absorbing; If the moving contact 4 of scolding branch to put in place because of collision rebound phenomenon takes place, then elastic component 3 upper cantilevers 32 will collude the boss 41 (seeing Fig. 8 and Fig. 9) on the moving contact 4, prevent falling of moving contact 4.
Critical effect is played in the utilization of elastic component 3, and it provides contact pressure or reversal interlocking relay can for moving contact 4, can play again moving contact 4 dropproof effects.Therefore the moving contact system of the utility model has reduced the parts number when guaranteeing the product interrupting performance, simplifies the structure, and has reduced installation time, has reduced production cost.
Shown in Figure 12 is that the utility model is applied to second embodiment of double break point in opening circuit, and the moving contact system comprises at the bottom of moving contact 4, the rotating shaft 1,7, two elastic components of rotating shaft lid 8, two strutting pieces 2 and floating axles 6.The present embodiment and first embodiment are structurally basic identical, and the main distinction is the structure of elastic component 8 itself.Shown in figure 13, present embodiment elastic component 8 is the spring leaf of laminated structure, and first end 83 of spring leaf is rolled into cylindric, and second end of spring leaf comprises kink 81 and the cantilever 83 that is stretched out and formed by kink.Concrete structure according to this elastic component 8; Be provided with two draw-in grooves 45 (seeing Figure 14) on the moving contact about the centre bore symmetry; First end 83 of spring leaf places in the draw-in groove, and second end of spring leaf places in the strutting piece 2, and kink 81 contacts with the bending curved surface 21 of strutting piece.Present embodiment adopts the spring leaf of sheet as elastic component, is easier to processing and installation, has reduced the part sum, has simplified installation process, has improved production efficiency.
Shown in figure 15; A kind of circuit breaker with above-mentioned double break crawl contact system of the utility model is provided with fixed contact 9 and moving contact 4 in this circuit breaker, and adopts the claimed moving contact of the utility model system; Make circuit breaker improve interrupting performance, reduced production cost.
Claims (8)
1. the moving contact system of a circuit breaker comprises moving contact (4,10) and rotating shaft, and moving contact is rotating to be installed in the rotating shaft; It is characterized in that; Between moving contact (4,10) and rotating shaft, also be provided with at least one contact lockable mechanism, said contact lockable mechanism comprises an elastic component and a boss (41,101) that is located at the moving contact back, and first end of elastic component links to each other with moving contact (4,10); Second end of elastic component is supported on rotating shaft inside; Second end of elastic component also connects a cantilever (32,82), and in the moving contact rotation process, said cantilever (32,82) can be inconsistent with said boss (41,101).
2. moving contact according to claim 1 system; It is characterized in that; Said rotating shaft comprises (1) and rotating shaft lid (7) at the bottom of the rotating shaft; Said moving contact (4) is located in the cavity that (1) and rotating shaft lid (7) surround at the bottom of the rotating shaft, covers with rotating shaft at the bottom of its two ends of centre bore that a floating axle (6) passes moving contact are plugged in rotating shaft.
3. according to the said moving contact of claim 2 system, it is characterized in that, also be provided with mounting groove (12) at the bottom of the said rotating shaft, be connected with strutting piece (2) in the mounting groove (12), the V-shaped bending of strutting piece, second end of said elastic component is supported in the said strutting piece.
4. moving contact according to claim 1 system is characterized in that said elastic component (3) is a torsion spring, and said contact lockable mechanism also comprises the circular hole (42) that is located on the moving contact (4), and first end (33) of torsion spring is plugged in the circular hole (42).
5. moving contact according to claim 4 system is characterized in that be provided with sleeve pipe (5) in the said circular hole (42), first end (33) of said elastic component is plugged in the sleeve pipe.
6. moving contact according to claim 1 system; It is characterized in that; Said elastic component (8) is a spring leaf, and said contact lockable mechanism also comprises the draw-in groove (45) that is located on the moving contact, and first end (83) of spring leaf places in the said draw-in groove; Second end of spring leaf connects a kink (81), and said cantilever (83) is made up of kink.
7. according to each described moving contact system of claim 1-6, it is characterized in that said moving contact is a double break point moving contact, said contact lockable mechanism has two, and two contact lockable mechanisms are about movable contact head pivot point symmetric arrangement.
8. a circuit breaker comprises fixed contact and moving contact system, it is characterized in that, said moving contact system adopts among the claim 1-7 each described moving contact system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120224640 CN202126981U (en) | 2011-06-29 | 2011-06-29 | Breaker and moving contact system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120224640 CN202126981U (en) | 2011-06-29 | 2011-06-29 | Breaker and moving contact system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202126981U true CN202126981U (en) | 2012-01-25 |
Family
ID=45490045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120224640 Expired - Lifetime CN202126981U (en) | 2011-06-29 | 2011-06-29 | Breaker and moving contact system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202126981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856134A (en) * | 2011-06-29 | 2013-01-02 | 上海良信电器股份有限公司 | Breaker and moving contact system thereof |
| CN103227060A (en) * | 2012-01-30 | 2013-07-31 | 西门子公司 | A rotor housing of a breaking mechanism of a switching apparatus used for an electrical switchgear |
-
2011
- 2011-06-29 CN CN 201120224640 patent/CN202126981U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856134A (en) * | 2011-06-29 | 2013-01-02 | 上海良信电器股份有限公司 | Breaker and moving contact system thereof |
| CN102856134B (en) * | 2011-06-29 | 2015-03-25 | 上海良信电器股份有限公司 | Breaker and moving contact system thereof |
| CN103227060A (en) * | 2012-01-30 | 2013-07-31 | 西门子公司 | A rotor housing of a breaking mechanism of a switching apparatus used for an electrical switchgear |
| CN103227060B (en) * | 2012-01-30 | 2017-03-01 | 西门子公司 | Rotor case for the release mechanism of the switching device of electric switch equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120125 Effective date of abandoning: 20150325 |
|
| RGAV | Abandon patent right to avoid regrant |