CN220873509U - Frame circuit breaker contact structure - Google Patents

Abstract

The utility model provides a frame circuit breaker contact structure, and belongs to the technical field of circuit breaker contacts. The utility model comprises a mounting seat and a plurality of movable contact pieces arranged on the mounting seat, wherein the front side of each movable contact piece is provided with a notch, silver pieces are embedded in the notch, two movable grooves which are distributed up and down are arranged on the side wall of each movable contact piece in a penetrating way, square buckles are arranged in the two movable grooves in a penetrating way, two clamping grooves are arranged on one side, away from the movable contact pieces, of each silver piece in a penetrating way, one side, away from the movable groove, of each buckle is respectively clamped in the two clamping grooves, and springs are fixedly connected between one side, located in the movable groove, of each buckle and the inner side wall of the movable groove. The utility model greatly facilitates the disassembly and assembly process of the silver sheet, simultaneously can not cause serious damage to the notch, facilitates the rapid maintenance in the later stage, and reduces the additional cost consumption.

Description

Frame circuit breaker contact structure

Technical Field

The utility model relates to the field of breaker contacts, in particular to a frame breaker contact structure.

Background

The frame-type breaker is also called as universal breaker, and is a mechanical switching device which can turn on, bear and break current under normal circuit condition, and also can turn on, bear a certain time and break current under specified abnormal circuit condition. The frame-type circuit breaker is used for distributing electric energy, protecting overload, undervoltage, short circuit and the like of circuits and power supply equipment, has the characteristics of multifunction protection, adjustable current, high circuit breaking capacity, reliability, safety and the like, and is widely applied to various electrical systems.

Contacts refer to contact members for connecting the power supply and the load circuit when the circuit breaker is in a closed state. It is usually made of a metallic material, capable of withstanding the loads of current and voltage. The main function of the contact is to realize the on-off control of the circuit. The internal contact of the frame-type circuit breaker consists of a moving contact and a fixed contact, and the rationality of the contact design is critical to the working performance and the safety of the circuit breaker. The choice of contact materials, the design of the contact area and the control of the contact pressure all have an influence on the current load carrying capacity, the contact resistance and the durability. At present, a contact on a movable contact is generally made of silver sheets, a notch is formed in the front side of the movable contact, and the silver sheets are tightly embedded in the notch. When the silver flake needs to be replaced due to oxidation, burning loss and other conditions, the silver flake needs to be slowly discharged from the tank body, so that the silver flake is inconvenient, the tank body is easy to damage, a new silver flake cannot be effectively fixed in the tank body, and additional cost is increased.

How to develop a frame circuit breaker contact structure to improve these problems is a urgent problem for those skilled in the art.

Disclosure of utility model

In order to overcome the above disadvantages, the present utility model provides a frame circuit breaker contact structure, which aims to improve the above problems.

The utility model is realized in the following way:

The utility model provides a frame circuit breaker contact structure which comprises a mounting seat and a plurality of movable contact pieces arranged on the mounting seat, wherein a notch is formed in the front side of each movable contact piece, silver pieces are embedded in the notch, two movable grooves which are distributed up and down are formed in the side wall of each movable contact piece in a penetrating manner, square buckles are respectively arranged in the two movable grooves in a penetrating manner, two clamping grooves are formed in the side, away from each movable contact piece, of each silver piece in a penetrating manner, one side, away from each movable groove, of each buckle is respectively clamped in the two clamping grooves, and springs are fixedly connected between one side, located in each movable groove, of each buckle and the inner side wall of each movable groove.

Preferably, the two buckles are respectively abutted against the inner walls of the two clamping grooves and are mutually attached.

Preferably, the cross section diameter of the ring buckle is smaller than the depth of the clamping groove.

Preferably, the frame circuit breaker contact structure further comprises a connecting seat arranged at the bottom end of the mounting seat, the connecting seat is movably connected with the mounting seat, a connecting plate is fixedly connected to the connecting seat, and the connecting seat is connected with the movable contact pieces through a plurality of flexible conductive wire bundles respectively.

Preferably, the bottom ends of the movable contact pieces are fixedly connected with upper fixed corner pieces, the top ends of the connecting seats are respectively fixedly connected with a plurality of lower fixed corner pieces corresponding to the upper fixed corner pieces one by one, and the opposite lower fixed corner pieces are connected with the upper fixed corner pieces through the flexible conductive wire harnesses.

Preferably, the metal sleeves are fixedly connected to the two ends of the flexible conductive wire harness, and the metal sleeves at the two ends of the flexible conductive wire harness are fixedly connected with the lower fixing corner pieces and the upper fixing corner pieces through bolts.

The beneficial effects of the utility model are as follows: through the cooperation between movable groove, latch closure, spring, notch, silver flake, the draw-in groove and use, the size of notch is slightly greater than the silver flake, does not adopt inseparable embedded design, carries out the joint with the draw-in groove on latch closure and the silver flake through the elastic design of latch closure and spring, can effectively fix the silver flake. Otherwise, the ring buckle is pulled to move out of the clamping groove on the silver sheet, so that the silver sheet and the movable contact sheet can be canceled to be fixed, the dismounting process of the silver sheet is greatly facilitated, meanwhile, the notch is not seriously damaged, the later-stage quick maintenance is facilitated, and the additional cost consumption is reduced. In addition, both ends of flexible conductive wire harness all pass through metal sheath and bolt fixed connection, compare traditional welding mode, also made things convenient for the dismantlement between the overall structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a contact structure of a frame circuit breaker according to an embodiment of the present utility model;

Fig. 2 is a schematic partial structure of a contact structure of a frame circuit breaker according to an embodiment of the present utility model;

fig. 3 is a partial structural side view of a frame circuit breaker contact structure provided in accordance with an embodiment of the present utility model;

Fig. 4 is a schematic view of a movable contact of a contact structure of a frame circuit breaker according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a slot of a contact structure of a frame circuit breaker according to an embodiment of the present utility model;

fig. 6 is a partial side view of a movable contact of a frame circuit breaker contact structure according to an embodiment of the present utility model.

In the figure: 1. a mounting base; 2. a movable contact; 3. a notch; 4. silver flakes; 5. a movable groove; 6. a ring buckle; 7. a spring; 8. a clamping groove; 9. a connecting seat; 10. a connecting plate; 11. a lower fixed corner piece; 12. fixing the corner piece on the upper part; 13. a flexible conductive wire harness; 14. a metal sleeve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-6, a frame circuit breaker contact structure, including mount pad 1 and a plurality of movable contact pieces 2 that set up on mount pad 1, notch 3 has been seted up to the front side of movable contact piece 2, silver piece 4 has been inlayed to notch 3's inside, two movable slots 5 that distribute from top to bottom have been run through on the lateral wall of movable contact piece 2, square latch closure 6 has all been worn to the inside of two movable slots 5, two draw-in grooves 8 have been seted up from top to bottom to one side that movable contact piece 2 was kept away from to silver piece 4, two latch closure 6 keep away from one side of movable slot 5 and block respectively in two draw-in grooves 8, two latch closure 6 are located all fixedly connected with spring 7 between the inside wall of movable slot 5 and one side of movable slot 5.

The two buckles 6 are respectively abutted against the inner walls of the two clamping grooves 8 and are mutually attached. The diameter of the cross section of the ring buckle 6 is smaller than the depth of the clamping groove 8, so that the clamping stability of the ring buckle 6 to the silver flake 4 is ensured.

It should be noted that, the silver flake 4 is not merely engaged with the notch 3, and the size of the notch 3 is larger than that of the silver flake 4, so that the silver flake 4 and the notch 3 can be easily and quickly separated.

Specifically, through the elastic design of the ring buckle 6 and the spring 7, the ring buckle 6 can move back and forth in the movable groove 5, and the spring 7 provides a reaction force to clamp the ring buckle 6 with the clamping groove 8 on the silver flake 4, and under the action of the elastic force of the spring 7, the ring buckle 6 can be pulled to be stably clamped in the clamping groove 8, and the silver flake 4 can be effectively fixed through the arrangement of the two ring buckles 6.

Otherwise, one side of the ring buckle 6 positioned in the clamping groove 8 is moved out of the clamping groove 8 on the silver sheet 4 by pulling the ring buckle 6, after the ring buckle 6 is taken out, the silver sheet 4 and the movable contact sheet 2 can be fixed, and then the silver sheet 4 is moved out of the notch 3. The disassembly and assembly process of the silver flake 4 is greatly facilitated, the notch 3 is not seriously damaged, the later-stage quick maintenance is facilitated, and the additional cost consumption is reduced.

In an embodiment, the frame circuit breaker contact structure further comprises a connecting seat 9 arranged at the bottom end of the mounting seat 1, the connecting seat 9 is movably connected with the mounting seat 1, a connecting plate 10 is fixedly connected to the connecting seat 9, and the connecting seat 9 is connected with the movable contact pieces 2 through a plurality of flexible conductive wire bundles 13 respectively. The bottom ends of the movable contact pieces 2 are fixedly connected with upper fixed corner pieces 12, the top ends of the connecting seats 9 are respectively fixedly connected with a plurality of lower fixed corner pieces 11 corresponding to the upper fixed corner pieces 12 one by one, and the opposite lower fixed corner pieces 11 are connected with the upper fixed corner pieces 12 through flexible conductive wire harnesses 13. The metal sleeves 14 are fixedly connected to the two ends of the flexible conductive wire harness 13, and the metal sleeves 14 at the two ends of the flexible conductive wire harness 13 are fixedly connected with the lower fixing corner pieces 11 and the upper fixing corner pieces 12 through bolts. The flexible conductive harness 13 serves to electrically connect the movable contact 2 to the connection board 10 for connecting the corresponding devices (the connection board 10 is specifically constructed and designed as the prior art, and will not be described here too much).

The lower fixing corner piece 11 and the upper fixing corner piece 12 are designed to serve as connection points for providing connection between both ends of the flexible conductive harness 13.

Specifically, metal sleeves 14 are arranged at two ends of the flexible conductive wire harness 13, the metal sleeves 14 are fixed with the movable contact piece 2 and the connecting seat 9 through bolts, when the whole movable contact piece 2 or the flexible conductive wire harness 13 needs to be replaced, the bolts on the metal sleeves 14 can be unscrewed, and connection between the flexible conductive wire harness 13 and the movable contact piece 2 or the connecting seat 9 can be canceled.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides a frame circuit breaker contact structure, includes mount pad (1) and sets up a plurality of movable contact pieces (2) on mount pad (1), notch (3) have been seted up to the front side of movable contact piece (2), the inside of notch (3) is inlayed and is had silver flake (4), a serial communication port, two movable groove (5) that distribute from top to bottom have been run through on the lateral wall of movable contact piece (2), two square latch closure (6) have all been worn to be equipped with in the inside of movable groove (5), two draw-in grooves (8) have been seted up from top to bottom to one side that movable contact piece (2) were kept away from to silver flake (4), two in two draw-in grooves (8) are respectively clamped to one side that movable groove (5) were kept away from to latch closure (6), two all fixedly connected with spring (7) between the inside one side of movable groove (5) and the inside wall of movable groove (5).

2. A frame circuit breaker contact structure according to claim 1, characterized in that the two buckles (6) are respectively abutted against the inner walls of the two clamping grooves (8) and are mutually attached.

3. A frame circuit breaker contact structure according to claim 1 or 2, characterized in that the cross-sectional diameter of the ring buckle (6) is smaller than the depth of the clamping groove (8).

4. The frame circuit breaker contact structure according to claim 1, further comprising a connecting seat (9) arranged at the bottom end of the mounting seat (1), wherein the connecting seat (9) is movably connected with the mounting seat (1), a connecting plate (10) is fixedly connected to the connecting seat (9), and the connecting seat (9) is respectively connected with the movable contact pieces (2) through a plurality of flexible conductive wire bundles (13).

5. The frame circuit breaker contact structure according to claim 4, wherein the bottom ends of the movable contact pieces (2) are fixedly connected with upper fixed corner pieces (12), the top ends of the connecting seats (9) are fixedly connected with a plurality of lower fixed corner pieces (11) corresponding to the upper fixed corner pieces (12) one by one respectively, and the opposite lower fixed corner pieces (11) are connected with the upper fixed corner pieces (12) through the flexible conductive wire harness (13).

6. The frame circuit breaker contact structure according to claim 5, wherein the two ends of the flexible conductive wire harness (13) are fixedly connected with metal sleeves (14), and the metal sleeves (14) at the two ends of the flexible conductive wire harness (13) are fixedly connected with the lower fixing corner pieces (11) and the upper fixing corner pieces (12) which are opposite through bolts.