CN200979860Y

CN200979860Y - Circuit breaker with contact disconnection indicating device

Info

Publication number: CN200979860Y
Application number: CN 200620011963
Authority: CN
Inventors: 唐晴; 柳岸军; 柳彦军; 李振林; 孔雷明; 王勇; 周百涛
Original assignee: Keda Electronic Equipment Co ltd Yantai Development Zone
Current assignee: Keda Electronic Equipment Co ltd Yantai Development Zone
Priority date: 2006-12-11
Filing date: 2006-12-11
Publication date: 2007-11-21
Anticipated expiration: 2016-12-11

Abstract

The utility model discloses a take contact disconnection indicating device's circuit breaker belongs to one of the circuit breaker of control circuit break-make. The device comprises a base 9, a cover 8, a moving contact 5, a fixed contact 6, an operating mechanism 7 and a handle 10, and is characterized in that a guide groove is arranged at the position of the cover 8 corresponding to the moving contact and the fixed contact, and a contact disconnection indicating device capable of moving along the guide groove is arranged, and the indicating device comprises an indicating part 1, a counter-force spring 4 and a limiting part 3. Because the action of the contact disconnection indicating device is only related to the movable contact, the indicating device can correctly indicate only when the movable contact is separated from the fixed contact and reaches the normal disconnection position, regardless of normal operation disconnection or fault free tripping disconnection, and whether the handle is at the disconnection position or the free tripping position. If the contacts are welded and the handle is in the open or free-release position, the indicator member will not extend beyond the outer surface of the cover. Simple structure, obvious indicating effect, reliable performance and low cost.

Description

The band contact disconnects the circuit breaker of indicating device

Technical field:

The utility model relates to a kind of circuit breaker with contact disconnection indicating device, belongs to one of controller of control circuit break-make.

Background technology:

Whether the contact of existing insulation crust circuit breaker disconnects, and whether reaches normally open position, generally can't see maybe and can not indicate.Though have the circuit breaker of transparency cover, can see the position of moving contact from the outside, be only limited to and use circuit breaker in the short time.Because after circuit breaker is used, particularly bringing onto load breaking operation or fault are threaded off behind the disjunction fault current automatically, whether the capital has flue dust or metallic particles to splash and is deposited on the inner surface of transparency cover, has influenced observing effect, do not see moving contact and separated with fixed contact and be in off-state.This point is crucial to the insulation crust circuit breaker with isolation features, can guarantee near the personnel's of controlling electric device equipment work personnel and electrical equipment safety.The operating grip of existing circuit breaker can only show that circuit breaker is in closure, disconnection or trip free state, but can not represent clearly whether dynamic/static contact separates, and whether moving contact is in normal off position, has brought hidden danger.

Technical solution:

Problem to be solved in the utility model is, provide a kind of and can represent clearly whether dynamic/static contact disconnects, and moving contact is in normal off position, and is simple in structure, the circuit breaker of dependable performance.

The utility model is to overcome the above problems the technical solution of taking to be, a kind of circuit breaker with following structure is provided.It is by base 9, and lid 8 is positioned at the moving contact 5 on the base, fixed contact 6, and the operating mechanism 7 and the handle 10 of control dynamic/static contact closure, separation are formed.Be characterized in, at the inner face of lid 8 with the moving contact opposite position, establish the hollow element 2 of fixedlying connected with it, have the hole on the lid 8 of hollow element 2 upper surface correspondences, this hole and hollow element have constituted a gathering sill.If one can disconnect indicating device along the contact that this gathering sill moves, this indicating device is by indication piece 1, the lower end that is socketed in reaction spring 4, one ends and indication piece 1 on the indication piece 1 connects, the other end can touch mutually with the upper surface of moving contact and the locating part 3 that reaction spring 4 is limited on the indication piece is formed.What need further specify is, here, the quantity that the quantity of gathering sill and contact disconnect indicating device is one-to-one relationship, the quantity that the quantity of gathering sill and contact disconnect indicating device is each one at least, if gathering sill be 1,2,3 ... N, then contact disconnect the quantity of indicating device also corresponding be 1,2,3 ... N.Generally speaking, for the two-phase circuit breaker, each one of the quantity of the quantity of gathering sill and contact disconnection indicating device just can; For three-phase breaker, each 2 of the quantity of the quantity of gathering sill and contact disconnection indicating device just can.Certainly, also can make each disconnect indicating device as required to the corresponding gathering sill of dynamic/static contact and a contact.

A kind of execution mode preferably of the utility model is that it is the deep gouge of integral structure with lid 8 inner faces that hollow element 2 is one.Like this, lid 8 can be once molding formed with hollow element 2, and processing is simple and firm.

Second kind of the utility model execution mode preferably be, locating part 3 and indication piece 1 are for being threaded.Like this, both be convenient to being connected of indication piece 1 and locating part 3, be convenient to adjust connection distance each other again, guaranteed that locating part 3 was at moving contact during near normal off position, just can touch mutually, accurately play the effect of indication dynamic/static contact closure, released state with moving contact.

Indication principle: with reference to the accompanying

drawings

1,2,3.Last pushing handle 10, handle 10 is by operating mechanism 7, make moving contact 5 and fixed contact 6 be in closure state, at this moment contact disconnects indicating device under the promotion of its reaction spring 4, move down along gathering sill, the upper surface of indication piece 1 is parallel with lid 8 upper surface or be positioned at and cover 8 upper end face, shows that moving contact 5 and fixed contact 6 are in closure state.Following handle 10, handle 10 is by operating mechanism 7, make dynamic/static contact disjunction under normal operation, or hinder the trip free disjunction for some reason, moving contact 5 and fixed contact 6 make to be in the move toward one another of released state, when near normal off position, moving contact and locating part 3 touch and overcome the thrust of reaction spring 4 mutually, promote locating part 3 and indication piece 1 along moving on the gathering sill, the top of indication piece 1 is exceeded cover 8 last plane, clearly indicate moving contact 5 and fixed contact 6 to be in normal off position, power supply is cut off, and gives the indication of operating personnel to be perfectly safe.

Because it is mechanical structure that the contact of the utility model setting disconnects indicating device, the action of indicating device is only relevant with moving contact, therefore no matter the normal running disjunction still is the disjunction of fault trip free, also no matter whether handle still is the trip free position at open position, have only moving contact to separate with fixed contact and arrive normal off position, indicating device just can correctly be indicated.Disconnect or the trip free position if contact melting welding and handle are in, indication piece can not stretch out exterior surface yet.Make it compared with prior art, have simple in structurely, indicative function is obvious, dependable performance, the advantage that cost is low.

Description of drawings:

The planar structure schematic diagram of a three-phase breaker of Fig. 1-the utility model

The end view of Fig. 2-Fig. 1 or Fig. 3 band broken section

The planar structure schematic diagram of a two-phase circuit breaker of Fig. 3-the utility model

Embodiment:

Provide embodiment of the present utility model below in conjunction with accompanying drawing, be used for further specifying technical solution.

Embodiment 1, with reference to figure 1, Fig. 2.Find out that by these two figure this is one and has the three-phase breaker that two contacts disconnect indicating device.Its base 9, lid 8, moving contact 5, fixed contact 6, operating mechanism 7 and handle 10, identical with the existing circuit breaker structure, and cover 8 and make for the transparent insulation plastics.It is the deep gouge of integral structure with lid 8 inner faces that hollow element 2 is one, and this deep gouge is 8 once molding formed with lid, and communicates with hole on the lid 8 and to have formed the gathering sill that contact disconnects indicating device.Contact disconnects the indication piece 1 and the locating part 3 of indicating device to be made for plastic material, and indication piece 1 is upper coarse and lower fine cylindric, and the bottom of its thin column part is provided with external screw thread.Reaction spring 4 is socketed in the thin cylinder position of indication piece 1, and the section that its upper end is instructed to part 1 thick column part blocks, and in order to indicate obviously, its color has more significantly difference with the color of lid 8.Locating part 3 is provided with the adjusting screw(rod) of internal thread for top, and with indication piece 1 by being threaded to one.Like this, both be convenient to being connected of indication piece 1 and locating part 3, be convenient to adjust connection distance each other again, guaranteed that locating part 3 was when moving contact is about to be in normal off position, can touch mutually with the upper surface of moving contact, accurately play the effect of indication dynamic/static contact closure, released state.Operation principle is the same, repeats no more.

Embodiment 2, referring to figs. 2 and 3.Find out that by these two figure this is one and has two phase circuit breakers that a contact disconnects indicating device.Its base 9, lid 8, moving contact 5, fixed contact 6, operating mechanism 7 and handle 10, identical with the existing circuit breaker structure, and cover 8 and make for the transparent insulation plastics.The structure of gathering sill, and the structure of contact disconnection indicating device is identical with the structure of embodiment 1, operation principle is also identical.With unique difference of embodiment 1 be, it is a two-phase circuit breaker, and contact disconnects indicating device and gathering sill is one.

What need further specify is that the technical solution according to the utility model provides can also provide other embodiment.As comparing with embodiment 1, the structure of other parts is constant, its change place embodiment that only to be indication piece 1 be connected for tight fit with locating part 3.Perhaps compare with embodiment 1, the structure inconvenience of other parts, its change place only are that hollow element 2 is column, and by welding or bonding and lid 8 embodiment that are coupled as one etc.Covering 8 simultaneously also can be that the plastic opaque material is made.

Claims

1, a kind of circuit breaker that disconnects indicating device with contact, it is by base (9), lid (8), be positioned at the moving contact (5) on the base, fixed contact (6), control dynamic/static contact closure, operating mechanism (7) that separates and handle (10) are formed, it is characterized in that, at the inner face of lid (8) with the moving contact opposite position, if the hollow element of fixedlying connected (2) with it, have the hole on the lid (8) of hollow element (2) upper surface correspondence, this hole and hollow element have constituted a gathering sill, and establishing one can disconnect indicating device along the contact that this gathering sill moves, and this contact disconnects indicating device by indication piece (1), be socketed in the reaction spring (4) on this indication piece, an end is connected with the lower end of indication piece (1), the other end can touch mutually with the upper surface of moving contact and the locating part (3) that reaction spring (4) is limited on the indication piece is formed.

2, band contact according to claim 1 disconnects the circuit breaker of indicating device, it is characterized in that, hollow element (2) be with lid (8) inner face be the deep gouge of integral structure.

3, band contact according to claim 1 and 2 disconnects the circuit breaker of indicating device, it is characterized in that, locating part (3) and indication piece (1) are for being threaded.