CN214043518U - Sliding type isolation knife mechanism - Google Patents

Abstract

The utility model provides a sword mechanism is kept apart to slidingtype, keep apart the sword and go up isolation sword spring contact including utmost point post casing, last play line seat, slidingtype, utmost point post casing has isolation sword operation chamber, it is formed with side direction opening and open-top to keep apart sword operation chamber, it is the annular play line seat to go up the play line seat to assemble in the open-top department who keeps apart sword operation chamber, the slidingtype is kept apart the sword and is set up in keeping apart sword operation intracavity to cup joint in last play line seat, slide about realizing, the top of utmost point post casing extends and has the open-top's of corresponding isolation sword operation chamber insulator cap, go up isolation sword spring contact assemble on the insulator cap in order to keep apart the sword cooperation with the gliding slidingtype that makes progress. The number of parts can be effectively reduced, and the assembly is simple.

Description

Sliding type isolation knife mechanism

Technical Field

The utility model relates to a circuit breaker field, concretely relates to slidingtype isolation knife mechanism of circuit breaker.

Background

The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is relatively popularized in power distribution networks. In practical application, the vacuum circuit breaker is often provided with an isolation switch, so that the vacuum arc-extinguishing chamber is matched with the isolation switch to be used together to form a complete circuit breaker.

The isolation switch of circuit breaker generally adopts hinge structure among the prior art, and the switch uses the articulated shaft to swing as the center promptly, and when being connected with the drive shaft of circuit breaker frame, its transmission structure is comparatively complicated, and the part is more, and the assembly is comparatively loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pair of sword mechanism is kept apart to slidingtype, the sword is kept apart to the slidingtype of directly moving about arranging on utmost point post casing, can effectively reduce part quantity, and the assembly is simple.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

the utility model provides a sword mechanism is kept apart to slidingtype, includes utmost point post casing, goes out the line seat, slidingtype keeps apart the sword and goes up isolation sword spring contact, utmost point post casing has isolation sword operation chamber, it is formed with side direction opening and open-top to keep apart sword operation chamber, it is annular play line seat to go out the line seat to go up to assemble in the open-top department who keeps apart sword operation chamber, the sword is kept apart to the slidingtype sets up in keeping apart sword operation intracavity to cup joint in last the seat of being qualified for the next round of competitions, slide about realizing, the top of utmost point post casing extends and has the open-top's of keeping apart sword operation chamber insulator cap corresponding, go up isolation sword spring contact assemble on the insulator cap in order to keep apart the sword cooperation with the gliding slidingtype that makes progress.

Further, the sword is kept apart to slidingtype includes fixed guide bar, keeps apart sword drive seat and electrically conductive section of thick bamboo, fixed guide bar sets up perpendicularly and is fixed in and keeps apart sword operation intracavity, electrically conductive section of thick bamboo has a direction hole, electrically conductive section of thick bamboo overlaps in last wire outlet seat, and fixed guide bar is cup jointed to its direction hole, keep apart sword drive seat fixed connection electrically conductive section of thick bamboo.

Furthermore, the fixed guide rod comprises a rod part and a guide ring sleeved on the rod part, the diameter of the rod part is smaller than the aperture of the guide inner hole of the conductive cylinder, and the guide ring is matched with the guide inner hole of the conductive cylinder so as to be in guide contact fit.

Furthermore, the outer edge of the insulation cap also extends downwards to form an isolation brim.

Further, the isolation brim completely covers the periphery of the upper isolation blade spring contact and extends downwards to exceed the upper isolation blade spring contact.

Further, the pole housing comprises a lower housing and an upper housing fixed at the upper end of the lower housing, the isolation knife operating cavity is formed in the lower housing, and the insulation cap is formed on the upper housing.

Further, the lower housing has a spacer layer, a left mounting side located on a left side of the spacer layer and a right mounting side located on a right side of the spacer layer; the left installation side is provided with a vacuum arc-extinguishing chamber, and the isolation knife operation cavity is formed on the right installation side.

Furthermore, the upper outgoing line seat comprises an annular conductive seat and a contact finger spring arranged on the inner annular surface of the annular conductive seat, and the contact finger spring is elastically abutted against the sliding type isolation knife to form electric contact.

Through the utility model provides a technical scheme has following beneficial effect:

the sliding type isolation knife is assembled to the isolation knife operation cavity of the pole shell, the isolation knife operation cavity is sleeved in the upper wire outlet seat to achieve electric contact with the upper wire outlet seat, meanwhile, a lateral opening of the isolation knife operation cavity plays a role in yielding, a driving arm of the driving device is inserted to enable the driving arm to be in driving connection with the sliding type isolation knife, the sliding type isolation knife is driven to slide up and down, switching-on and switching-off operation of the isolation knife switch is achieved, the structure is simple, assembly is simple and convenient, and switching-on and switching-off driving operation is stable.

Drawings

Fig. 1 is a perspective view of an embedded pole with a sliding isolating blade mechanism according to an embodiment;

fig. 2 is a front view of the embedded pole with the sliding isolating knife mechanism in the embodiment;

fig. 3 is a first cross-sectional view of the embedded pole with the sliding isolating knife mechanism in an embodiment in a front view, wherein the isolating knife is in a switching-off state;

fig. 4 is a second cross-sectional view of the embedded pole with the sliding isolating blade mechanism in an elevation view, wherein the isolating blade is in a closing state;

fig. 5 is a right side view of the embedded pole with the sliding isolating blade mechanism in the embodiment;

fig. 6 is a schematic structural diagram illustrating the assembly of the embedded pole with the sliding isolating blade mechanism to the rack of the circuit breaker according to the embodiment.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 5, the sliding type isolation knife mechanism provided in this embodiment includes a pole housing 100, an upper wire outlet seat 25, a sliding type isolation knife 30, and an upper isolation knife spring contact 51, where the pole housing 100 has an isolation knife operating cavity 103, the isolation knife operating cavity 103 is formed with a lateral opening and a top opening, the upper wire outlet seat 25 is an annular wire outlet seat and is assembled at the top opening of the isolation knife operating cavity 103, the sliding type isolation knife 30 is disposed in the isolation knife operating cavity 103 and is sleeved in the upper wire outlet seat 25 to slide up and down, an insulating cap 41 corresponding to the top opening of the isolation knife operating cavity 103 extends from the top of the pole housing 100, and the upper isolation knife spring contact 51 is assembled on the insulating cap 41 to contact and cooperate with the sliding type isolation knife 30 sliding upward. I.e., the sliding isolation blade 30 slides upward into contact with the upper isolation blade spring contact 51, closing is achieved as shown in fig. 4. When the sliding isolation knife 30 slides down to be separated from the upper isolation knife spring contact 51, the opening is realized, as shown in fig. 3.

The sliding type isolation knife 30 is assembled to the isolation knife operating cavity 103 of the pole housing 100 and is sleeved into the upper wire outlet seat 25 to achieve electrical contact with the upper wire outlet seat 25, meanwhile, a lateral opening of the isolation knife operating cavity 103 plays a role of abdicating, so that the driving arm 71 of the driving device (in the embodiment, the isolation knife driving shaft 70) is inserted to enable the driving arm 71 to be in driving connection with the sliding type isolation knife 30, the sliding type isolation knife 30 is driven to slide up and down, the opening and closing operation of the isolation knife switch is achieved, the structure is simple, the assembly is simple and convenient, and the opening and closing driving operation is stable.

Further, in this embodiment, the sliding type isolation knife 30 includes a fixed guide rod 31, an isolation knife driving seat 33, and a conductive cylinder 32, the fixed guide rod 31 is vertically disposed and fixed in the isolation knife operating cavity 103, and more specifically, the lower end of the fixed guide rod 31 is connected to a transverse fixing rod 34, and two ends of the transverse fixing rod 34 are respectively fixed on two side walls forming the isolation knife operating cavity 103, so as to achieve the disposition of the fixed guide rod 34. The conductive tube 32 is provided with a guide inner hole 321, the conductive tube 32 is sleeved in the upper wire outlet seat 25, the guide inner hole 321 is sleeved with the fixed guide rod 31, and the vertical movement is realized through the matching of the guide inner hole 321 and the fixed guide rod 31. The isolation knife driving seat 33 is fixedly connected with the conductive cylinder 32, the isolation knife driving seat 33 is used for being connected with a driving arm, the conductive cylinder 32 is driven by the driving arm to move up and down, and the isolation knife switch is switched on and off by matching the conductive cylinder 32 with the upper isolation knife spring contact piece 51. Simple structure and stable action. Of course, in other embodiments, the structure of the sliding type isolation knife 30 is not limited thereto.

More specifically, in this embodiment, the fixed guide rod 31 includes a rod portion 311 and a guide ring 312 sleeved on the rod portion 311, a diameter of the rod portion 311 is smaller than an aperture of the guide inner hole 321 of the conductive tube 32, and the guide ring 312 is adapted to the guide inner hole 321 of the conductive tube 32 for guiding contact matching. So set up, the area of contact between conductive cylinder 32 and the fixed guide bar 31 reduces, when guaranteeing to play the direction, fine reduction the contact friction between the two for the action is more smooth and easy, stable.

Further, in this embodiment, the upper wire outlet seat 25 includes an annular conductive seat and a contact finger spring disposed on an inner annular surface of the annular conductive seat, and the contact finger spring elastically abuts against the sliding type isolation blade 30 to form an electrical contact. The upper wire outlet base 25 is electrically contacted with the sliding type isolation knife 30, and the up-and-down movement of the sliding type isolation knife 30 is not hindered. The effect is good. Of course, in other embodiments, other slip-fit arrangements that enable electrical contact may be used.

Further, in this embodiment, the outer edge of the insulation cap 41 further extends downward to form an isolation brim 411, which can effectively isolate and protect the electrical connection between the upper isolation blade spring contact 51 and the sliding isolation blade 30. More preferably, the isolation visor 411 completely covers the periphery of the upper isolation blade spring contact piece 51 and extends downwards to exceed the upper isolation blade spring contact piece 51, so that the upper isolation blade spring contact piece 51 is completely hidden, and the isolation effect is better and more stable. Of course, in other embodiments, this is not limiting.

Further, in this embodiment, the pole housing 100 includes a lower housing 10 and an upper housing 40 fixed to an upper end of the lower housing 10, the isolation blade operating chamber 103 is formed in the lower housing 10, and the insulation cap 41 is formed in the upper housing 40. The upper shell and the lower shell are detachably assembled, so that the injection molding of a mold is easy. Of course, the pole housing 100 may be an integral connection structure in other embodiments.

More specifically, the lower case 10 has a partition layer 11, a left mounting side 12 located on the left side of the partition layer 11, and a right mounting side 13 located on the right side of the partition layer 11; the left mounting side 12 is provided with a vacuum interrupter 21, and the isolating blade operating chamber 103 is formed in the right mounting side 13. The vacuum arc extinguish chamber 21 and the sliding type isolation knife 30 are distributed left and right and integrated on the solid-sealed pole, the insulation requirement between the isolation knife and the moving end of the vacuum arc extinguish chamber 21 is met, the vacuum fracture and the isolation fracture are tightly combined, the integration effect is good, the size is smaller, and the mutual influence cannot be caused. When the breaker rack 200 is assembled, as shown in fig. 6, the arc extinguish chamber drive shaft 60 for driving the vacuum arc extinguish chamber 21 to open and close and the isolating knife drive shaft 70 for driving the sliding isolating knife 30 to slide up and down can be arranged oppositely left and right, and the solid-sealed pole is arranged between the two, so that the assembly can be well realized. Has the advantages of simple structure, simple and convenient assembly and the like. Of course, in other embodiments, this is not limiting.

Specifically, in this embodiment, the upper housing 40 and the lower housing 10 are made of epoxy resin, and the epoxy resin has good molding property and good insulation property. Of course, in other embodiments, other materials capable of achieving insulation may be used.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a sword mechanism is kept apart to slidingtype which characterized in that: including utmost point post casing, go up the seat of being qualified for the next round of competitions, the sword is kept apart to slidingtype and the sword spring contact is kept apart on, utmost point post casing has keeps apart sword operation chamber, keep apart sword operation chamber and be formed with side direction opening and open-top, it is annular seat of being qualified for the next round of competitions to go up the seat of being qualified for the next round of competitions to go up to assemble in the open-top department who keeps apart sword operation chamber, the sword is kept apart to slidingtype sets up in keeping apart sword operation intracavity to cup joint in last seat of being qualified for the next round of competitions, the top of utmost point post casing extends to have the open-top's of corresponding isolation sword operation chamber insulator cap, go up keep apart sword spring contact assembly on the insulator cap in order to keep apart the sword cooperation with the gliding slidingtype that makes progress.

2. The sliding isolation knife mechanism of claim 1, wherein: the sliding type isolation knife comprises a fixed guide rod, an isolation knife driving seat and a conductive cylinder, wherein the fixed guide rod is vertically arranged and fixed in an isolation knife operation cavity, the conductive cylinder is provided with a guide inner hole, the conductive cylinder is sleeved in an upper wire outlet seat, the guide inner hole is sleeved with the fixed guide rod, and the isolation knife driving seat is fixedly connected with the conductive cylinder.

3. The sliding isolation knife mechanism of claim 2, wherein: the fixed guide rod comprises a rod part and a guide ring sleeved on the rod part, the diameter of the rod part is smaller than the aperture of the guide inner hole of the conductive cylinder, and the guide ring is matched with the guide inner hole of the conductive cylinder so as to be in guide contact fit.

4. The sliding isolation knife mechanism of claim 1, wherein: the outer edge of the insulating cap also extends downwards to form an isolating brim.

5. The sliding isolation knife mechanism of claim 4, wherein: the isolation brim completely covers the periphery of the upper isolation blade spring contact blade and extends downwards to exceed the upper isolation blade spring contact blade.

6. The sliding isolation knife mechanism of claim 1, wherein: the pole casing comprises a lower casing and an upper casing fixed at the upper end of the lower casing, the isolation knife operation cavity is formed in the lower casing, and the insulation cap is formed on the upper casing.

7. The sliding isolation knife mechanism of claim 6, wherein: the lower shell is provided with a clapboard layer, a left mounting side positioned on the left side of the clapboard layer and a right mounting side positioned on the right side of the clapboard layer; the left installation side is provided with a vacuum arc-extinguishing chamber, and the isolation knife operation cavity is formed on the right installation side.

8. The sliding isolation knife mechanism of claim 1, wherein: the upper outgoing line seat comprises an annular conductive seat and a contact finger spring arranged on the inner ring surface of the annular conductive seat, and the contact finger spring is elastically abutted against the sliding type isolation knife to form electric contact.

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