CN216749789U

CN216749789U - Universal contact system for circuit breaker with spring guide effect

Info

Publication number: CN216749789U
Application number: CN202123327893.5U
Authority: CN
Inventors: 于敏; 唐小虎; 吕远; 高杰
Original assignee: Legrand Low Voltage Wuxi Co Ltd
Current assignee: Legrand Low Voltage Wuxi Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-14
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a contact system for a universal circuit breaker with a spring guide function, which comprises an inner rod, a lantern ring, a side groove, a connecting shaft and a guide plate, wherein the inner rod is arranged at the inner end of a rod head, the outer surface of the inner rod is provided with the lantern ring, the outer surface of the inner rod is provided with the side groove, the inner end of the side groove is provided with the connecting shaft, the outer surface of the connecting shaft is connected with the guide plate, and the inner end of the guide plate is provided with a sliding groove. This universal contact system for circuit breaker with spring guide effect is provided with guide bar and moving contact spring, when the contact system was closed under operating device's effect, the moving contact piece moves down and compresses the moving contact spring, the moving contact spring keeps the vertical state under the effect of guide bar, avoid the terminal pressure change because of warping and leading to bear the weight of the fault current of certain time, in addition, because adopted the guide bar, so corresponding contact support has the structure simpler in comparison in the contact support of no guide bar, advantages such as the cost is lower.

Description

Universal contact system for circuit breaker with spring guide effect

Technical Field

The utility model relates to the technical field of universal circuit breaker equipment of low-voltage electrical appliances, in particular to a contact system for a universal circuit breaker with a spring guide function.

Background

In the modern times, the requirements for power utilization and the stability of power supply are increasingly enhanced, and the importance of the universal circuit breaker is increasingly improved. In a low-voltage distribution network, the device is mainly used for distributing electric energy and protecting lines and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit, single-phase grounding and the like. Meanwhile, selective protection can be achieved, unnecessary power failure is avoided, and power supply reliability is improved.

In a conventional universal circuit breaker, a contact system, an operating mechanism, an actuating element, and an electronic trip unit are mounted on a body of the universal circuit breaker. The operating mechanism stores energy manually or electrically, then closes the contact system under the action of a manual or action element so as to switch on a normal circuit and a specified abnormal circuit, and the electronic tripping unit can sample fault current occurring in the circuit, separate the contact system within a specified time and extinguish the arc so as to break the circuit, thereby achieving the purpose of protecting the circuit and load equipment.

In the process of switching on the circuit, the contact between the moving contact and the fixed contact in the contact system must be reliable, and the fault current can be carried for a certain time. When the universal circuit breaker is switched on, a contact spring of the moving contact is compressed and stressed, and the risk of deformation and bending exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a scheme for reliably preventing a movable contact spring from deforming and bending due to compression stress.

In order to achieve the purpose, the utility model provides the following technical scheme: a contact system with spring guide function for a universal circuit breaker comprises a movable contact blade and a contact support, wherein the movable contact blade is arranged at the upper end of the contact support;

further comprising:

the groove is formed in the inner end of the contact support, a moving contact spring is arranged at the inner end of the groove, a guide rod is arranged at the inner end of the moving contact spring, and the guide rod consists of a rod head and a rod body;

the interior pole, set up in the inner of pole head, and the surface of interior pole is provided with the lantern ring to the side channel has been seted up to the surface of interior pole, the connecting axle is installed to the inner of side channel, and the surface of connecting axle is connected with the deflector, the spout has been seted up to the inner of deflector to the inner of spout is provided with the slider, the side of slider is connected with the connecting seat, and the outside hub connection of connecting seat has the guiding axle, the bottom of pole head is provided with the stopper, and the top of stopper is connected with the end of guiding axle.

Preferably, the guide rod forms a sliding structure through the groove and the contact support, and the guide rod forms an elastic structure through the moving contact spring and the groove, so that the moving contact spring is compressed when the moving contact piece is pressed down.

Preferably, the guide bar comprises a bar head and a bar body, the bar head and the bar body are fixedly connected, and the bar head and the inner bar are of a fixed integrated structure.

Preferably, the inner rod and the lantern ring are of a sleeved structure, the inner rod is in threaded connection with the lantern ring, two groups of side grooves are symmetrically formed in the side ends of the inner rod, and the inner rod moves upwards along the outer surface of the inner rod through rotation of the lantern ring.

Preferably, the guide plate forms a rotating structure through the connecting shaft and the side groove, the sliding block forms a sliding structure through the sliding groove and the guide plate, the sliding block is fixedly connected with the connecting seat, and the sliding block extrudes the guide rod through the contraction of the guide plate.

Preferably, the connecting seat is connected for rotating with the guiding axle, and the guiding axle is sliding connection with interior pole to the end of guiding axle is fixed connection with the bottom of stopper, drives the stopper through the removal of guiding axle and carries out the block to the spring top.

Compared with the prior art, the utility model has the beneficial effects that:

1. the contact system for the universal circuit breaker with the spring guide function is provided with the guide rod and the moving contact spring, when the contact system is closed under the action of the operating mechanism, the moving contact piece moves downwards to compress the moving contact spring, the moving contact spring is kept in a vertical state under the action of the guide rod, and final pressure change caused by bending due to deformation is avoided, so that fault current in a certain time is borne, and in addition, due to the adoption of the guide rod, the corresponding contact support has the advantages of simpler structure, lower cost and the like compared with a contact support without the guide rod;

2. this universal contact system for circuit breaker with spring guide effect is provided with the lantern ring and stopper, rotates the lantern ring and makes it along interior pole rebound, and the lantern ring inboard will extrude the deflector, and the deflector receives the extrusion and contracts to move to the side inslot, extrudees the guiding axle among the shrink process, and the guiding axle end will drive the stopper and remove, and the stopper carries out the block to moving contact spring top, avoids moving contact spring to appear droing.

Drawings

FIG. 1 is a schematic view of the overall front view structure of the present invention;

FIG. 2 is a perspective view of the guide bar of the present invention;

FIG. 3 is a schematic view of a front view of the club head according to the present invention;

FIG. 4 is a schematic view of the working structure of the collar of the present invention;

fig. 5 is a front view of the guide plate of the present invention.

In the figure: 1. a movable contact blade; 2. a guide rod; 201. a club head; 202. a rod body; 3. a contact support; 4. a groove; 5. a moving contact spring; 6. an inner rod; 7. a collar; 8. a side groove; 9. a connecting shaft; 10. a guide plate; 11. a chute; 12. a slider; 13. a connecting seat; 14. a guide shaft; 15. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a contact system with spring guide function for a universal circuit breaker comprises a movable contact blade 1 and a contact support 3, wherein the movable contact blade 1 is arranged at the upper end of the contact support 3;

further comprising:

the groove 4 is formed in the inner end of the contact support 3, a moving contact spring 5 is arranged at the inner end of the groove 4, a guide rod 2 is arranged at the inner end of the moving contact spring 5, and the guide rod 2 consists of a rod head 201 and a rod body 202;

interior pole 6, set up in the inner of pole head 201, and the surface of interior pole 6 is provided with lantern ring 7, and side groove 8 has been seted up to the surface of interior pole 6, connecting axle 9 is installed to the inner of side groove 8, and the surface of connecting axle 9 is connected with deflector 10, spout 11 has been seted up to the inner of deflector 10, and the inner of spout 11 is provided with slider 12, the side of slider 12 is connected with connecting seat 13, and the outside hub connection of connecting seat 13 has guiding axle 14, the bottom of pole head 201 is provided with stopper 15, and the top of stopper 15 is connected with guiding axle 14's end.

The guide bar 2 forms a sliding structure through the groove 4 and the contact support 3, the guide bar 2 forms an elastic structure through the moving contact spring 5 and the groove 4, the guide bar 2 comprises a bar head 201 and a bar body 202, the bar head 201 is fixedly connected with the bar body 202, and the bar head 201 and the inner bar 6 are in a fixed integrated structure.

When the contact system is closed under the action of the operating mechanism, the movable contact blade 1 moves downwards to compress the movable contact spring 5, the movable contact spring 5 keeps a vertical state under the action of the guide rod 2, and the final pressure change caused by the bending due to the deformation is avoided, so that the fault current is carried for a certain time, and in addition, the guide rod 2 is adopted, so that the corresponding contact support 3 has the advantages of simpler structure, lower cost and the like compared with the contact support 3 without the guide rod 2.

Interior pole 6 is the socket joint structure with the lantern ring 7, and interior pole 6 is threaded connection with the lantern ring 7, and the side symmetric distribution of interior pole 6 has seted up two sets of side ways 8, deflector 10 constitutes revolution mechanic through connecting axle 9 and side way 8, slider 12 passes through spout 11 and deflector 10 and constitutes sliding construction, and slider 12 and connecting seat 13 are fixed connection, connecting seat 13 is for rotating with guiding axle 14 and is connected, and guiding axle 14 is sliding connection with interior pole 6, and the end of guiding axle 14 is fixed connection with the bottom of stopper 15.

When the installation is carried out, the top end of the moving contact spring 5 can be attached to the bottom end of the rod head 201, at the moment, the lantern ring 7 is rotated, as the lantern ring 7 is in threaded connection with the inner rod 6, the lantern ring 7 moves upwards along the inner rod 6, the inner side of the lantern ring 7 extrudes the guide plate 10 in the moving process, the guide plate 10 is extruded to rotate along the bottom side connecting shaft 9, the guide plate 10 retracts towards the side groove 8, the sliding block 12 slides along the sliding groove 11 in the retracting process, the sliding block 12 extrudes the guide shaft 14 through the connecting seat 13, the guide shaft 14 retracts towards the inner end of the inner rod 6, the tail end of the guide shaft 14 synchronously drives the bottom end of the limiting block 15 to move, the top end of the limiting block 15 clamps the top end of the moving contact spring 5, so that the moving contact spring 5 is stably fixed on the outer surface of the rod body 202, and after long-time work is avoided, the moving contact spring 5 falls off.

The working principle is as follows: when the contact system for the universal circuit breaker with the spring guide function is used, according to the figures 1-5, the device is firstly placed at a position needing to work, when the contact system is closed under the action of an operating mechanism, the movable contact blade 1 moves downwards to compress the movable contact spring 5, the movable contact spring 5 keeps a vertical state under the action of the guide rod 2, and the final pressure change caused by bending due to deformation is avoided, so that the fault current for a certain time is borne, in addition, because the guide rod 2 is adopted, the corresponding contact support 3 has the advantages of simpler structure, lower cost and the like compared with the contact support 3 without the guide rod 2;

meanwhile, when the contact system is installed, the top end of the movable contact spring 5 can be attached to the bottom end of the rod head 201, the lantern ring 7 is rotated, the lantern ring 7 is in threaded connection with the inner rod 6, so that the lantern ring 7 moves upwards along the inner rod 6, the guide plate 10 is extruded by the inner side of the lantern ring 7 in the moving process, the guide plate 10 is extruded to rotate along the bottom-side connecting shaft 9, the guide plate 10 contracts and moves towards the side groove 8, the sliding block 12 slides along the sliding groove 11 in the contracting process, the sliding block 12 extrudes the guide shaft 14 through the connecting seat 13, the guide shaft 14 contracts towards the inner end of the inner rod 6, the tail end of the guide shaft 14 synchronously drives the bottom end of the limiting block 15 to move, the top end of the movable contact spring 15 clamps the top end of the movable contact spring 5, so that the movable contact spring 5 is stably fixed on the outer surface of the rod body 202, after the long-time work is avoided, the moving contact spring 5 drops, and the overall practicability is improved.

Those not described in detail in this specification are within the skill of the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A contact system with spring guide function for a universal circuit breaker comprises a movable contact blade (1) and a contact support (3), wherein the movable contact blade (1) is arranged at the upper end of the contact support (3);

it is characterized by also comprising:

the groove (4) is formed in the inner end of the contact support (3), a moving contact spring (5) is arranged at the inner end of the groove (4), a guide rod (2) is arranged at the inner end of the moving contact spring (5), and the guide rod (2) consists of a rod head (201) and a rod body (202);

interior pole (6), set up in the inner of pole head (201), and the surface of interior pole (6) is provided with lantern ring (7) to side groove (8) have been seted up to the surface of interior pole (6), connecting axle (9) are installed to the inner of side groove (8), and the surface of connecting axle (9) is connected with deflector (10), spout (11) have been seted up to the inner of deflector (10) to the inner of spout (11) is provided with slider (12), the side of slider (12) is connected with connecting seat (13), and the outside hub connection of connecting seat (13) has guiding axle (14), the bottom of pole head (201) is provided with stopper (15), and the top of stopper (15) is connected with the end of guiding axle (14).

2. The contact system for a universal circuit breaker with spring guide function as claimed in claim 1, characterized in that the guide rod (2) forms a sliding structure with the contact support (3) via the groove (4), and the guide rod (2) forms an elastic structure with the groove (4) via the movable contact spring (5).

3. The contact system for the universal circuit breaker with the spring guide function as claimed in claim 1, wherein the guide rod (2) is composed of a rod head (201) and a rod body (202), the rod head (201) and the rod body (202) are fixedly connected, and the rod head (201) and the inner rod (6) are fixedly integrated.

4. The contact system with the spring guide function for the universal circuit breaker is characterized in that the inner rod (6) and the sleeve ring (7) are of a sleeved structure, the inner rod (6) and the sleeve ring (7) are in threaded connection, and two groups of side grooves (8) are symmetrically distributed at the side ends of the inner rod (6).

5. The contact system for a universal circuit breaker with spring guide function according to claim 1, wherein the guide plate (10) forms a rotating structure with the side groove (8) through the connecting shaft (9), the sliding block (12) forms a sliding structure with the guide plate (10) through the sliding groove (11), and the sliding block (12) is fixedly connected with the connecting base (13).

6. The contact system for the universal circuit breaker with the spring guiding function as claimed in claim 1, wherein the connecting seat (13) is rotatably connected with the guiding shaft (14), the guiding shaft (14) is slidably connected with the inner rod (6), and the end of the guiding shaft (14) is fixedly connected with the bottom end of the limiting block (15).