CN212991014U

CN212991014U - Rotary double-breakpoint contact structure of circuit breaker

Info

Publication number: CN212991014U
Application number: CN202022252041.3U
Authority: CN
Inventors: 徐宏
Original assignee: Wuxi Yuanhong Electrical Engineering Co ltd
Current assignee: Wuxi Yuanhong Electrical Engineering Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-04-16
Anticipated expiration: 2030-10-10

Abstract

The utility model belongs to the technical field of the circuit breaker, especially, be a two breakpoint contact structures of circuit breaker rotation type, including the circuit breaker body, the inner wall of circuit breaker body rotates through the bearing and is connected with the bull stick, the fixed surface of bull stick is connected with the contact piece, the surface of contact piece is seted up flutedly, the inside fixedly connected with telescopic link of recess, the fixed surface of contact piece is connected with the sand grip. The utility model discloses the circuit breaker passes through the interior motor of control box and drives the rotation of control box, and then drives the runner rotation on surface, through the surface meshing bar tooth of runner, and then drive the bar tooth and reciprocate, connect the outage contact through the both ends of bar tooth, and then conveniently make the outage contact correspond the contact plate chucking and fix, set up the crisscross laminating chucking of draw-in groove correspondence sand grip through the surface of outage contact, reduce resistance, through this structure, effectively improve the reliability of contact joint, reduce the emergence of trouble.

Description

Rotary double-breakpoint contact structure of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is a circuit breaker rotation type double break contact structure.

Background

In the development of the current low-voltage molded case circuit breaker, the structural form of the double break point becomes the preferential development direction of products of a plurality of enterprises. The reason for this is that the double-breakpoint molded case circuit breaker has many advantages compared with the conventional single-breakpoint molded case circuit breaker, and the double-breakpoint molded case circuit breaker can be higher in the on-off short-circuit current, and particularly higher in the on-off performance under 690V. One of the core components of a double-break molded case circuit breaker is a contact system. The structure quality of the contact system has great influence on the breaking performance and the current limiting capacity of the circuit breaker, and researches show that the following problems still exist in the prior art:

1. the existing rotary double-breakpoint contact system structure has poor reliability, unreliable contact repulsion and clamping and easy failure;

2. the double-breakpoint molded case circuit breaker has the advantages of more parts, complex structure, time and labor consumption in installation, reduction of working efficiency and increase of cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a two breakpoint contact structures of circuit breaker rotation type has solved current two breakpoint contact system structures of rotation type, and the reliability is poor, and the contact is repulsive to be blocked unreliable, easily breaks down, and the part that two breakpoint moulded case circuit breakers adopted is more, and the structure is complicated, and the installation is wasted time and energy, reduces work efficiency, the problem of incremental cost.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a rotary double-breakpoint contact structure of a circuit breaker comprises a circuit breaker body, wherein the inner wall of the circuit breaker body is rotatably connected with a rotating rod through a bearing, the surface of the rotating rod is fixedly connected with a contact piece, the surface of the contact piece is provided with a groove, the inside of the groove is fixedly connected with a telescopic rod, the surface of the telescopic rod is connected with a spring in a sliding way, the surface of the contact piece is fixedly connected with a convex strip, the side wall of the breaker body is fixedly connected with a control cabinet, one side surface of the control cabinet is rotatably connected with a rotating shaft through a bearing, the end part of the rotating shaft is rotationally connected with the side wall of the breaker body through a bearing, the surface of the rotating shaft is fixedly connected with a rotating wheel, the surface of the rotating wheel is engaged with a strip-shaped tooth, one side of the strip-shaped tooth is fixedly connected with a limiting rod, the surface of the strip-shaped teeth is fixedly connected with a power-off contact, and the end part of the power-off contact is fixedly connected with a protection pad.

As an optimized technical scheme of the utility model, the tip of contact piece is provided with the oblique shape incision, and two incisions are the shape of falling eight characters.

As an optimal technical scheme of the utility model, the tip fixed connection recess of spring, the spring is laminated with the surface of telescopic link mutually.

As a preferred technical scheme of the utility model, the spout has been seted up to the inner wall of circuit breaker body, the inside sliding connection gag lever post of spout.

As a preferred technical scheme of the utility model, the outage contact is the T type form, the quantity of outage contact is two.

As an optimal technical scheme of the utility model, the draw-in groove has been seted up on the surface of outage contact, the draw-in groove is equidistant distribution on the surface of outage contact.

(III) advantageous effects

Compared with the prior art, the utility model provides a two breakpoint contact structures of circuit breaker rotation type possesses following beneficial effect:

1. this two breakpoint contact structures of circuit breaker rotation type, the circuit breaker passes through the interior motor drive control box of control box and rotates, and then drive the runner on surface and rotate, surface mesh bar tooth through the runner, and then drive the bar tooth and reciprocate, connect the outage contact through the both ends of bar tooth, and then it is fixed that convenient messenger's outage contact corresponds the contact plate chucking, set up the crisscross chucking of laminating of draw-in groove correspondence sand grip through the surface of outage contact, reduce the resistance, through this structure, effectively improve the reliability of contact joint, reduce the emergence of trouble.

2. This circuit breaker rotation type double break point contact structure drives the bar tooth and then drives the power-off contact and corresponds the chucking contact piece through the runner, realizes the effect of outage separation, this simple structure, simple to operate, the reliable stable structure, reduction in production cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the area A of FIG. 1 according to the present invention;

fig. 3 is a side sectional view of the circuit breaker body of the present invention.

In the figure: 1. an interrupter body; 2. a rotating rod; 3. a contact piece; 4. a groove; 5. a telescopic rod; 6. a spring; 7. a convex strip; 8. a control cabinet; 9. a rotating shaft; 10. a rotating wheel; 11. a bar-shaped tooth; 12. a limiting rod; 13. a chute; 14. a power-off contact; 15. a card slot; 16. and (6) a protective pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a two breakpoint contact structures of circuit breaker rotation type, including outage ware body 1, the inner wall of outage ware body 1 rotates through the bearing and is connected with bull stick 2, the fixed surface of bull stick 2 is connected with contact piece 3, the surface of contact piece 3 is seted up flutedly 4, the inside fixedly connected with telescopic link 5 of recess 4, the sliding surface connection spring 6 of telescopic link 5, the fixed surface of contact piece 3 is connected with sand grip 7, the lateral wall fixedly connected with control box 8 of outage ware body 1, a side surface of control box 8 rotates through the bearing and is connected with pivot 9, the tip of pivot 9 rotates through the bearing and connects the lateral wall of outage ware body 1, the fixed surface of pivot 9 is connected with runner 10, the surface meshing of runner 10 has bar tooth 11, one side fixedly connected with gag lever post 12 of bar tooth 11, the fixed surface of bar tooth 11 is connected with outage contact 14.

In this embodiment, the circuit breaker passes through motor drive control box 8 rotation in the control box, and then drive surperficial runner 10 and rotate, surface meshing bar tooth 11 through runner 10, and then drive bar tooth 11 and reciprocate, connect outage contact 14 through the both ends of bar tooth 11, and then it is fixed that convenient messenger's outage contact 14 corresponds 3 chucking of contact piece, set up draw-in groove 15 through the surface of outage contact 14 and correspond the crisscross laminating chucking of sand grip 7, reduce the resistance, through this structure, effectively improve the reliability of contact joint, reduce the emergence of trouble, drive bar tooth 11 and then drive outage contact 14 through runner 10 and correspond chucking contact piece 3, realize the effect of outage separation, the steam generator is simple in structure, high durability and convenient installation, the structure is reliable and stable, and low production cost.

Specifically, the end of the contact piece 3 is provided with an oblique notch, and the two notches are in an inverted V shape.

In this embodiment, the end of the contact piece 3 is provided with a notch, so that the power-off contact 14 is clamped with the contact piece 3 more conveniently and smoothly.

Specifically, the end of the spring 6 is fixedly connected with the groove 4, and the spring 6 is attached to the surface of the telescopic rod 5.

In this embodiment, the spring 6 is provided to facilitate the elastic resilience of the spring 6 to pull the two contact pieces 3 to tightly clamp the power-off contact 14.

Specifically, the inner wall of the breaker body 1 is provided with a sliding groove 13, and the inside of the sliding groove 13 is slidably connected with a limiting rod 12.

In this embodiment, through the setting of spout 13, make things convenient for gag lever post 12 to slide from top to bottom in spout 13's inside, and then support spacing effect to bar tooth 11.

Specifically, the power cutoff contacts 14 are T-shaped, and the number of the power cutoff contacts 14 is two.

In this embodiment, the power-on and power-off operations of contacting the contact piece 3 through the power-off contact 14 are facilitated by the arrangement of the power-off contact 14.

Specifically, the surface of the power-off contact 14 is provided with the slots 15, and the slots 15 are distributed on the surface of the power-off contact 14 at equal intervals.

In this embodiment, through the setting of draw-in groove 15, it is fixed to conveniently cooperate the 7 chucking of sand grip, and then convenient spacing effect to it.

The utility model discloses a theory of operation and use flow: the contact piece 3 is conveniently driven to rotate by connecting the rotating rod 2 through the inner wall of the breaker body 1 and connecting the contact piece 3 through the surface of the rotating rod 2, the groove 4 is formed in the surface of the contact piece 3, the groove 4 is connected through the groove 4 to limit and move between the two contact pieces 3, the contact piece 3 is pulled by the spring 6 on the surface of the telescopic rod 5 through the elastic resilience of the spring 6, the contact piece 3 and the power-off contact 14 are conveniently clamped and fixed, the convex strip 7 is connected through the surface of the contact piece 3, the convex strip 7 is matched with the clamping groove 15, the power-off contact 14 and the contact piece 3 are more reliably clamped, the displacement looseness is prevented, the rotating shaft 9 is driven to rotate by the motor in the control cabinet 8, the rotating wheel 10 is connected through the surface of the rotating shaft 9, the rotating wheel 10 is driven to rotate, the, through the end connection power-off contact 14 of bar tooth 11, two power-off contacts 14 correspond chucking contact piece 3 circular telegram circuit-breaking operation about conveniently driving, through the setting of protection pad 16, conveniently protect power-off contact 14's tip, this simple structure, the manufacturing cost is saved in convenient operation, and the practicality is strong.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two breakpoint contact structures of circuit breaker rotation type, includes circuit breaker body (1), its characterized in that: the inner wall of the breaker body (1) is rotatably connected with a rotating rod (2) through a bearing, the surface of the rotating rod (2) is fixedly connected with a contact piece (3), the surface of the contact piece (3) is provided with a groove (4), the inner part of the groove (4) is fixedly connected with a telescopic rod (5), the surface of the telescopic rod (5) is connected with a spring (6) in a sliding manner, the surface of the contact piece (3) is fixedly connected with a convex strip (7), the side wall of the breaker body (1) is fixedly connected with a control cabinet (8), one side surface of the control cabinet (8) is rotatably connected with a rotating shaft (9) through a bearing, the end part of the rotating shaft (9) is rotatably connected with the side wall of the breaker body (1) through a bearing, the surface of the rotating shaft (9) is fixedly connected with a rotating wheel (10), and the surface, one side fixedly connected with gag lever post (12) of bar tooth (11), the fixed surface of bar tooth (11) is connected with outage contact (14), the tip fixedly connected with protection pad (16) of outage contact (14).

2. The rotary dual-break contact structure of claim 1, wherein: the end part of the contact piece (3) is provided with an oblique notch, and the two notches are inverted V-shaped.

3. The rotary dual-break contact structure of claim 1, wherein: the end part of the spring (6) is fixedly connected with the groove (4), and the spring (6) is attached to the surface of the telescopic rod (5).

4. The rotary dual-break contact structure of claim 1, wherein: the inner wall of the breaker body (1) is provided with a sliding chute (13), and the inside of the sliding chute (13) is connected with a limiting rod (12) in a sliding manner.

5. The rotary dual-break contact structure of claim 1, wherein: the power-off contacts (14) are T-shaped, and the number of the power-off contacts (14) is two.

6. The rotary dual-break contact structure of claim 1, wherein: the surface of the power-off contact (14) is provided with clamping grooves (15), and the clamping grooves (15) are distributed on the surface of the power-off contact (14) at equal intervals.