A kind of contact that is applied to the circuit breaker fixed contact
Technical field
The present invention relates to a kind of structure member that is applied to circuit breaker, be specifically related to a kind of contact that is applied to the circuit breaker fixed contact.
Background technology
Circuit breaker is used for connecting the internal circuit and the external circuit of certain limit, its effect is equivalent to master switch, circuit breaker basic structure comprise two parts, i.e. binding post and drive unit, under the drive of drive unit, binding post can be communicated with or open circuit.The binding post of circuit breaker is according to different connected modes, can be divided into wiring and plug-in connecting terminal behind wiring before the plate, the plate, adopt the circuit breaker of plug-in connecting terminal, omitted the interior necessary isolator of binding post of original general circuit breaker, improved the economy of using, bring very big convenience to operation and maintenance simultaneously, increased fail safe, reliability.
Owing to the circuit breaker that adopts plug-in connecting terminal has above-mentioned advantage, therefore all comparatively convenient in operation, maintenance and replacement, obtained using comparatively widely at present so have the circuit breaker of plug-in connecting terminal.
The circuit breaker that has plug-in connecting terminal, its binding post generally is made up of moving contact and fixed contact, and moving contact is installed on the drive unit of circuit breaker; Fixed contact is fixed in the housing of circuit breaker, and drive unit drives the moving contact reciprocating motion, inserts, extracts the connecting and disconnecting that fixed contact is realized circuit by moving contact.This shows, the performance of fixed contact for the job stability of circuit breaker and useful life equal important influence.
Existing fixed contact comprises contact frame and contact group, the contact group is installed in the described contact frame, the contact level is stacked constitutes by several for the contact group, stacked good contact group places contact frame internal fixation, in general, the following structure of the many employings of contact: the contact both sides are equipped with relative film guiding slot, and the conducting strip that is used to conduct electricity is installed in the film guiding slot of each contact.
Adopt the contact group of this kind structure, occur following point easily: at first,, will cause the fault of circuit breaker under conduction state if the conducting strip of the contact both sides that are placed in contacts; Secondly, the contact group is that the contact level is stacked constitutes by several, place contact frame internal fixation to constitute fixed contact then, like this, when the moving contact level is inserted fixed contact, be positioned at several conducting strips on the moving contact be difficult for fixed contact on several conducting strips connect one to one, thereby influence the job stability and the reliability of circuit breaker.
Summary of the invention:
Goal of the invention of the present invention, be defective at above-mentioned prior art existence, a kind of contact that is applied to the circuit breaker fixed contact is provided, adopt the contact group of the contact formation of this structure, the conducting strip that can not only guarantee arbitrary contact both sides is insulated from each other, can guarantee simultaneously that several conducting strips on the moving contact and the corresponding conducting strip of fixed contact be accurately corresponding connection one by one, thereby has guaranteed the stability and the reliability of circuit breaker work when moving contact insertion fixed contact.
For achieving the above object, the technical solution used in the present invention is:
A kind of contact that is applied to the circuit breaker fixed contact, comprise the contact panel, the both sides correspondence of described contact panel is provided with left conductive film track and right conductive film track, conducting strip is installed in described left conductive film track and the right conductive film track, be provided with insulating trip between described left conductive film track and the right conductive film track, the height of described insulating trip is greater than the height of described conducting strip.
Further, described insulating trip is located at the leading section of described left conductive film track and right conductive film track.
Further, the nock of described insulating trip is provided with the oblique angle.
Further, described contact panel is provided with location hole, and described location hole is divided on the cell wall of conductive film track of described contact panel both sides, and the described position of positioning hole that is positioned at contact panel both sides is relative.
Further, described location hole is divided into centrally-located hole and several edge location holes, and described centrally-located hole is positioned at the middle part of described contact panel; Described several edge location holes are positioned at the marginal position of described contact panel.
Beneficial effect of the present invention is:
The invention provides a kind of contact that is applied to the circuit breaker fixed contact, adopt the contact group of the contact formation of this structure, the conducting strip that can not only guarantee arbitrary contact both sides is insulated from each other, can guarantee simultaneously when moving contact inserts fixed contact, several conducting strips on the moving contact and the corresponding conducting strip of fixed contact be accurately corresponding connection one by one, thereby has guaranteed the stability and the reliability of circuit breaker work.
Description of drawings:
Fig. 1 is the structural representation of contact panel among the present invention;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the structure of cover plate schematic diagram that matches with contact panel among the present invention;
Fig. 4 is the front view of cover plate.
Embodiment:
Below in conjunction with accompanying drawing the present invention is further explained and illustrates:
As Figure 1-3:
A kind of contact that is applied to the circuit breaker fixed contact, comprise contact panel 1, the both sides correspondence of described contact panel is provided with left conductive film track 11 and right conductive film track 12, conducting strip 13 is installed on respectively in described left conductive film track 11 and the right conductive film track 12, be provided with insulating trip 14 between described left conductive film track 11 and the right conductive film track 12, the height of described insulating trip 14 is greater than the height of described conducting strip 13.Described insulating trip 14 is located at the leading section of described left conductive film track 11 and right conductive film track 12, and the nock of described insulating trip 14 also is provided with oblique angle 17.
The setting of insulation board, can realize the insulation between the conducting strip 13 on the same contact panel, simultaneously, insulation board 14 can also play the effect of guide-localization, promptly insert in the process of fixed contact at moving contact, by insulation board 14, several conducting strips that can make moving contact accurately with fixed contact on corresponding conducting strip 13 be connected one by one.Thereby guaranteed about the conducting strip on the dynamic/static contact, about the location.
For making the connection between contact more firm, relative displacement can not take place, in the preferred scheme, described contact panel 1 is provided with location hole, described location hole is divided on the cell wall of conductive film track 11,12 of described contact panel 1 both sides, and the described position of positioning hole that is positioned at contact panel 1 both sides is relative.Described location hole is divided into centrally-located hole 15 and several edge location holes 16, and described centrally-located hole 15 is positioned at the middle part of described contact panel 1; Described several edge location holes 16 are positioned at the marginal position of described contact panel 1.Between two contact panels, add a cover plate 2, cover plate 2 matches with contact panel 1 shape, and cover plate 2 is provided with the alignment pin 21 relative with the position of positioning hole on the contact panel 1, like this, several contact panels can be realized firm connection and location by the cover plate between two adjacent contact panels, make moving contact when inserting fixed contact, relative slide displacement can not take place between several contacts in the fixed contact contact group, further improved the stability and the reliability of circuit breaker.
It should be noted that embodiment only is to explanation of the present invention, it should be considered as restriction and qualification, therefore, adopt flesh and blood of the present invention and only make local change, must fall within the scope of protection of the present invention technical scheme of the present invention.