CN202616148U - Contact state indicating device and breaker with the same - Google Patents
Contact state indicating device and breaker with the same Download PDFInfo
- Publication number
- CN202616148U CN202616148U CN 201220322575 CN201220322575U CN202616148U CN 202616148 U CN202616148 U CN 202616148U CN 201220322575 CN201220322575 CN 201220322575 CN 201220322575 U CN201220322575 U CN 201220322575U CN 202616148 U CN202616148 U CN 202616148U
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- Prior art keywords
- indicating arm
- contact state
- indicating device
- contact
- plain cushion
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Abstract
The utility model discloses a contact state indicating device and a breaker with the same. The contact state indicating device comprises an indicating rod and a counter-force spring which is sleeved on the indicating rod, wherein a guide boss and a flat gasket are arranged in the middle of the indicating rod, and a buffering wheel is arranged at the bottom end of the indicating rod. Compared with a breaker in a patent documentation of CN 200979860Y, the breaker with the contact state indicating device is reasonable in structure, good in use effect and long in service life.
Description
Technical field
The utility model belongs to the breaker structure design field, is specifically related to a kind of contact state indicating device and the circuit breaker that has this contact state indicating device.
Background technology
Before the circuit maintenance and safeguarding, to cut off alive circuit through the contact system separating brake of circuit breaker usually to guarantee staff's personal safety.
To such an extent as in the market the loam cake of circuit breaker mostly adopt opaque plastic process or adopt the transparent insulation plastics process but dynamic/static contact partly the parts of the side of being provided thereon block and can't observe the inner dynamic/static contact virtual condition of circuit breaker; Usually the staff judges whether separating brake of circuit breaker through a deciliter handle present position; This just causes judging by accident probably; Thereby the initiation electric shock accidents constitutes a threat to staff's personal safety.
Above-mentioned defective to existing circuit breaker existence; Patent documentation CN200979860Y discloses a kind of circuit breaker that breaks off indicating device with contact; Wherein said contact breaks off indicating device by indication piece; Be socketed in the reaction spring on the indication piece, an end is connected with the lower end of indication piece, the other end can contact with the upper surface of moving contact and reaction spring is limited to the locating part composition on the indication piece.Because it is only relevant with moving contact that contact breaks off the action of indicating device; Therefore no matter normal running still is the disjunction of fault trip free, perhaps whether to be in open position still be the trip free disjunction to handle, and perhaps whether handle still is the trip free position at open position; Have only moving contact to separate and reach the normal off position indicating device and just can normally indicate with fixed contact; Break off or the trip free position if contact melting welding and handle are in, indication piece can not stretch out this outer surface yet, and it is remarkable that the contact in this patent documentation breaks off the indicating device indicating effect; Dependable performance and with low cost, and can effectively prevent the generation of the incident of judging by accident.
The above-mentioned advantage of contact disconnection indicating device can not be ignored among the patent documentation CN200979860Y; But also have shortcoming to overcome: 1, because locating part adopts plastics to process; In use be prone to take place to cause the locating part scaling loss, need frequent change owing to contact is overheated; 2, because the lower end of locating part contact with the upper surface of moving contact always, in separating brake moment, moving contact has the very strong active force that makes progress; If the indication piece action is not smooth; Cause indication piece crooked probably, even fracture, not only do not reach indicating effect; Damage circuit breaker in addition probably, shorten the useful life of circuit breaker.
In sum, the structure of the disconnection of the contact among patent documentation CN200979860Y indicating device also need be improved.
The utility model content
To the deficiency that exists among the patent documentation CN200979860Y,
First goal of the invention of the utility model provides a kind of contact state indicating device, this contact state indicating device rational in infrastructure, in the separating brake process action smooth and easy, can effectively prolong its long service life;
Second goal of the invention of the utility model provides a kind of circuit breaker that has the contact state indicating device, and it is rational in infrastructure, result of use good, long service life.
The technical scheme that realizes first purpose of the utility model is:
A kind of contact state indicating device comprises indicating arm and is set in the reaction spring on the indicating arm; It is characterized in that: be provided with guide ledges and plain cushion at the middle part of said indicating arm, buffering wheel be housed in its bottom.
In the technique scheme, said plain cushion is positioned at the top of said guide ledges; Said reaction spring is positioned at the top of said plain cushion.
In the technique scheme, said plain cushion is fixed on the indicating arm through jump ring.
In the technique scheme, said buffering wheel is fixed on the indicating arm through rivet.
The technical scheme that realizes second purpose of the utility model is:
A kind of circuit breaker that has the contact state indicating device comprises housing, is arranged on contact system, arc quenching system and contact state indicating device in the said housing, stretches out deciliter handle of said housing; Said contact system comprises fixed contact and moving contact; Said contact state indicating device comprises indicating arm and is set in the reaction spring on the indicating arm; Said housing is made up of loam cake, middle cover and base; The relevant position of said loam cake and middle cover is provided with perforation, and said indicating arm passes the perforation of said loam cake and middle cover; Said loam cake is stretched out on the top of said indicating arm, and the upper end of said reaction spring is against on the said housing, and its lower end is against on the said indicating arm;
Buffering wheel is equipped with in bottom at said indicating arm, and said buffering wheel is positioned at the top of said moving contact;
Middle part at said indicating arm also is provided with guide ledges and plain cushion; Said plain cushion is positioned at the top of said guide ledges; Cover in said and be provided with gathering sill, said guide ledges is arranged in said gathering sill and moves at gathering sill in the process that vertical direction moves with said indicating arm;
The lower end of said plain cushion is against on the upper surface of said middle cover;
"on" position: under the effect of reaction spring, the lower end of said plain cushion is against the upper end of said middle cover, leaves the gap between the upper surface of said buffering wheel and moving contact;
When separating brake: the elastic force that said moving contact overcomes reaction spring pops up and contacts and drive indicating arm with buffering wheel and move up, and said plain cushion separates along with indicating arm moves with middle cover.
In the technique scheme, said guide ledges is positioned at the below of said middle cover;
Lower surface at said middle cover forms to the boss that extends below, and the perforation that covers in being arranged on is positioned at the center of said boss, and said gathering sill is arranged on the longitudinal fluting on the said boss.
In the technique scheme, the upper end of said reaction spring is against the inner surface of said loam cake, and its lower end is against on the said indicating arm.
In the technique scheme, said plain cushion is fixed on the indicating arm through jump ring.
In the technique scheme, said buffering wheel is fixed on the indicating arm through rivet.
In the technique scheme, the quantity of said contact state indicating device is one.
The utlity model has positive effect:
(1) the contact state indicating device in the utility model is owing to be provided with guide ledges and plain cushion at the middle part of its indicating arm; And buffering wheel is housed in its bottom; In use, the effect counter-force the when rotation through buffering wheel cushions the contact disjunction, whole process action is smooth and easy; Can not cause indicating arm to damage, effectively prolong the useful life of contact state indicating device.
(2) circuit breaker in the utility model comprises the contact state indicating device of said structure; Owing to be provided with buffering wheel in the bottom of its indicating arm; And in "on" position: under the effect at reaction spring; The lower end of said plain cushion is against the upper end of said middle cover, leaves the gap between the upper surface of said buffering wheel and moving contact; During separating brake: the elastic force that said moving contact overcomes reaction spring pops up and contacts and drive indicating arm with buffering wheel and move up, and said plain cushion separates along with indicating arm moves with middle cover.Because the existence in gap has guaranteed not contact with moving contact at the "on" position buffering wheel; Thereby effectively having reduced because of contact is overheated makes indicating arm produce distortion or damage; The effect counter-force that produces during the rotatable thereby available buffer moving contact disjunction of said buffering wheel, whole process action is smooth and easy, can not cause indicating arm stuck; Through being set, plain cushion drops to enclosure interior to prevent indicating arm because of action of gravity, the distance when being used to be limited to "on" position simultaneously between buffering wheel and the moving contact upper surface; Simultaneously; Circuit breaker in the utility model is through being provided with guide ledges on the indicating arm of its contact state indicating device; And in said, cover gathering sill is set; Said guide ledges is arranged in said gathering sill and moves at gathering sill in the process that vertical direction moves with said indicating arm, adopts this kind structure to guarantee that indicating arm moves up and down by set stroke and direction, has certain position-limiting action simultaneously.Than patent documentation CN200979860Y, structure is more reasonable, result of use better, the useful life of assurance circuit breaker.
Description of drawings
Fig. 1 is a kind of perspective view of contact state indicating device in the utility model;
Fig. 2 is the perspective view of Fig. 1 during from another viewed;
Fig. 3 is for having a kind of forward view of the circuit breaker of contact state indicating device in the utility model;
A kind of cutaway view that dissects along the A-A line when Fig. 4 is positioned at gate-dividing state for the moving contact of the circuit breaker among Fig. 3;
A kind of cutaway view that dissects along the A-A line when Fig. 5 is positioned at "on" position for the moving contact of the circuit breaker among Fig. 3;
Fig. 6 is a kind of perspective view of Fig. 3;
Reference numeral shown in the figure does;
The 1-indicating arm; The 11-guide ledges; The 12-plain cushion; The 13-jump ring; The 14-rivet; The 2-reaction spring; The 3-buffering wheel; The 4-arc quenching system; 5-deciliter handle; The 6-fixed contact; The 61-moving contact; The 7-loam cake; The 71-middle cover; The 72-base; The 73-boss; The 74-gathering sill.
Embodiment
(embodiment 1, contact state indicating device)
Fig. 1 to Fig. 2 has shown a kind of embodiment of contact state indicating device in the utility model.Wherein, Fig. 1 is a kind of perspective view of contact state indicating device in the utility model; Fig. 2 is the perspective view of Fig. 1 during from another viewed.
A kind of contact state indicating device, as depicted in figs. 1 and 2, it comprises indicating arm 1 and is set in the reaction spring 2 on the indicating arm 1; The top of said reaction spring 2 is against on the breaker upper cover; Its bottom is against on the said indicating arm 1, is provided with guide ledges 11 and plain cushion 12 at the middle part of said indicating arm 1, in its bottom buffering wheel 3 is housed; Because the setting of buffering wheel 3; Effect counter-force when the rotation through buffering wheel 3 cushions the contact disjunction, and whole process action is smooth and easy, can not damage indicating arm 1.
Said plain cushion 12 is positioned at the top of said guide ledges 11, and said reaction spring 2 is positioned at the top of said plain cushion 12.Said plain cushion 12 is fixed on the indicating arm 1 through jump ring 13.
In the present embodiment, said buffering wheel 3 is fixed on the indicating arm 1 through rivet 14.
(embodiment 2, have the circuit breaker of contact state indicating device)
Fig. 3 to Fig. 6 has shown a kind of embodiment of circuit breaker in the utility model.Wherein, Fig. 3 is for having a kind of forward view of the circuit breaker of contact state indicating device in the utility model; A kind of cutaway view that dissects along the A-A line when Fig. 4 is positioned at gate-dividing state for the moving contact of the circuit breaker among Fig. 3; A kind of cutaway view that dissects along the A-A line when Fig. 5 is positioned at "on" position for the moving contact of the circuit breaker among Fig. 3; Fig. 6 is a kind of perspective view of Fig. 3.
A kind of circuit breaker that has the contact state indicating device comprises housing, is arranged on contact system, arc quenching system 4 and contact state indicating device in the said housing, stretches out deciliter handle 5 of said housing; Said contact system comprises fixed contact 6 and moving contact 61; Said contact state indicating device comprises indicating arm 1 and is set in the reaction spring 2 on the indicating arm 1; Said housing is made up of loam cake 7, middle cover 71 and base 72; Said loam cake 7 is provided with perforation with the relevant position of middle cover 71, and said indicating arm 1 passes the perforation of said loam cake 7 and middle cover 71; Said loam cake 7 is stretched out on the top of said indicating arm 1, and the upper end of said reaction spring 2 is against on the said housing, and its lower end is against on the said indicating arm 1.
In the bottom of said indicating arm 1 buffering wheel 3 is housed, said buffering wheel 3 can rotate around its center, and said buffering wheel 3 is positioned at the top of said moving contact 61; Also be provided with guide ledges 11 and plain cushion 12 at the middle part of said indicating arm 1; Said plain cushion 12 is positioned at the top of said guide ledges 11; Said middle cover 71 is provided with gathering sill 74; Said guide ledges 11 is arranged in said gathering sill 74 and moves at gathering sill 74 in the process that vertical direction moves with said indicating arm 1; Thereby guarantee that indicating arm 1 moves up and down by set stroke and direction, have certain position-limiting action simultaneously; The lower end of said plain cushion 12 is against on the upper surface of said middle cover 71; Said reaction spring 2 is positioned at the top of said plain cushion 12, through plain cushion 12 being set to prevent indicating arm 1 because of action of gravity drops to enclosure interior, the distance when being used to be limited to "on" position simultaneously between buffering wheel 3 and the moving contact 61; In this enforcement, said plain cushion 12 is fixed on the indicating arm 1 through jump ring 13.
"on" position: under the effect of reaction spring 2; The lower end of said plain cushion 12 is against the upper end of said middle cover 71; Leave the gap between the upper surface of said buffering wheel 3 and moving contact 61; Because the existence in gap has guaranteed not contact with moving contact 61 at "on" position buffering wheel 3, make indicating arm 1 produce distortion or damage thereby effectively reduced because of contact is overheated, be illustrated in figure 5 as the topology view of "on" position.
When separating brake: the elastic force that said moving contact 61 overcomes reaction spring 2 pops up and contacts and drive indicating arm 1 with buffering wheel 3 and move up, and said plain cushion 12 is illustrated in figure 4 as the topology view of gate-dividing state along with moving with middle cover of indicating arm 1 left in 71 minutes.
In the present embodiment, said guide ledges 11 is positioned at the below of said middle cover 71; Form to the boss that extends below 73 in the bottom of said middle cover 71, be arranged on the center that perforation on the middle cover 71 is positioned at said boss 73, said gathering sill 74 is arranged on the longitudinal fluting on the said boss 73.
Distortion as said structure; Perforation on can middle cover 71 is set to square; And the indicating arm 1 appropriate section respective shapes that is set to and bores a hole, said guide ledges 11 is cancelled from the guiding effect because of square perforation, adopts this structure also can save gathering sill 74 is set on middle cover 71.
The upper end of said reaction spring 2 is against the inner surface of said loam cake 7, and its lower end is against on the said indicating arm 1.
In the present embodiment, said buffering wheel 3 is fixed on the indicating arm 1 through rivet 14, and in practical operation, every circuit breaker only need use a contact state indicating device to get final product.
If circuit breaker is that 630A and above big electric current adopt two contacts through electric current, then need the corresponding one group of contact of 3, one buffering wheels of two buffering wheels, electric current adopts single contact at 400A and following little electric current, needs a buffering wheel 3 to get final product.
The indication course of action of the contact state indicating device in the foregoing description is explained as follows:
During combined floodgate; Moving contact 61 moves down; Break away from buffering wheel 3, indicating arm 1 obtains discharging in reaction spring 2 counter-force that compression produces during in disjunction, promotes indicating arm 1 moving down along guide ledges 11; Be against on the middle cover 71 until the lower end of plain cushion 12, the height that loam cake 7 is stretched out on the top of indicating arm 1 reduces.
During separating brake, moving contact 61 is upspring, and contacts with buffering wheel 3; Buffering wheel 3 can rotate; The reaction force that mechanism produces when dividing the disjunction of taking off a part of moving contact 61, indicating arm 1 moves up under the effect of elastic force that is transmitted moving contact 61 by buffering wheel 3 and the guide ledges 11 on the indicating arm 1 then, overcomes the elastic force of reaction spring 2; Reaction spring 2 is compressed, and the height that makes the top of indicating arm 1 stretch out loam cake 7 increases.
Judging that moving contact and fixed contact be whether closed, can judge that i.e. a among comparison diagram 4 and Fig. 5 and the size of b are specifically with reference to figure 4 and Fig. 5 through the height that indicating arm 1 stretch out loam cake 7.As moving contact 61 once more separating brake then repeat said process and get final product.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the execution mode of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection range of the utility model.
Claims (10)
1. a contact state indicating device comprises indicating arm and is set in the reaction spring on the indicating arm; It is characterized in that: be provided with guide ledges and plain cushion at the middle part of said indicating arm, buffering wheel be housed in its bottom.
2. contact state indicating device according to claim 1 is characterized in that: said plain cushion is positioned at the top of said guide ledges; Said reaction spring is positioned at the top of said plain cushion.
3. contact state indicating device according to claim 1 is characterized in that: said plain cushion is fixed on the indicating arm through jump ring.
4. according to any described contact state indicating device in the claim 1 to 3, it is characterized in that: said buffering wheel is fixed on the indicating arm through rivet.
5. a circuit breaker that has the contact state indicating device comprises housing, is arranged on contact system, arc quenching system and contact state indicating device in the said housing, stretches out deciliter handle of said housing; Said contact system comprises fixed contact and moving contact; Said contact state indicating device comprises indicating arm and is set in the reaction spring on the indicating arm; Said housing is made up of loam cake, middle cover and base; The relevant position of said loam cake and middle cover is provided with perforation, and said indicating arm passes the perforation of said loam cake and middle cover, and said loam cake is stretched out on the top of said indicating arm, and the upper end of said reaction spring is against on the said housing, and its lower end is against on the said indicating arm;
It is characterized in that:
Buffering wheel is equipped with in bottom at said indicating arm, and said buffering wheel is positioned at the top of said moving contact;
Middle part at said indicating arm also is provided with guide ledges and plain cushion; Said plain cushion is positioned at the top of said guide ledges; Cover in said and be provided with gathering sill, said guide ledges is arranged in said gathering sill and moves at gathering sill in the process that vertical direction moves with said indicating arm;
The lower end of said plain cushion is against on the upper surface of said middle cover;
"on" position: under the effect of reaction spring, the lower end of said plain cushion is against the upper end of said middle cover, leaves the gap between the upper surface of said buffering wheel and moving contact;
When separating brake: the elastic force that said moving contact overcomes reaction spring pops up and contacts and drive indicating arm with buffering wheel and move up, and said plain cushion separates along with indicating arm moves with middle cover.
6. the circuit breaker that has the contact state indicating device according to claim 5 is characterized in that: said guide ledges is positioned at the below of said middle cover;
Lower surface at said middle cover forms to the boss that extends below, and the perforation that covers in being arranged on is positioned at the center of said boss, and said gathering sill is arranged on the longitudinal fluting on the said boss.
7. the circuit breaker that has the contact state indicating device according to claim 6 is characterized in that: the upper end of said reaction spring is against the inner surface of said loam cake, and its lower end is against on the said indicating arm.
8. according to the circuit breaker that has the contact state indicating device described in each in the claim 5 to 7, it is characterized in that: said plain cushion is fixed on the indicating arm through jump ring.
9. the circuit breaker that has the contact state indicating device according to claim 8 is characterized in that: said buffering wheel is fixed on the indicating arm through rivet.
10. the circuit breaker that has the contact state indicating device according to claim 9 is characterized in that: the quantity of said contact state indicating device is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322575 CN202616148U (en) | 2012-07-03 | 2012-07-03 | Contact state indicating device and breaker with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322575 CN202616148U (en) | 2012-07-03 | 2012-07-03 | Contact state indicating device and breaker with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616148U true CN202616148U (en) | 2012-12-19 |
Family
ID=47349821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322575 Expired - Fee Related CN202616148U (en) | 2012-07-03 | 2012-07-03 | Contact state indicating device and breaker with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616148U (en) |
-
2012
- 2012-07-03 CN CN 201220322575 patent/CN202616148U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20180703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |