CN220570171U

CN220570171U - Drawer base circuit breaker

Info

Publication number: CN220570171U
Application number: CN202322124070.5U
Authority: CN
Inventors: 夏邵仇; 周敏琛; 陈晓锋
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-03-08
Anticipated expiration: 2033-08-08

Abstract

A drawer base circuit breaker belongs to the technical field of low-voltage electrical appliances. The novel wire outlet device comprises a wire outlet row and a bottom frame, wherein the bottom frame is positioned at the rear side of the drawer seat, the wire outlet row comprises a copper bar and a support, the support is fixed with the copper bar, the support is also fixed with the bottom frame, the support comprises a first mounting plate and a second mounting plate which are formed by bending, the first mounting plate is used for being fixedly mounted with the bottom frame, the second mounting plate is used for being fixedly mounted with the copper bar, and a reinforcing stamping part is arranged on the first mounting plate and/or the second mounting plate. The advantages are that: the bending strength of the wire outlet row can be greatly improved, and the wire outlet row is prevented from being deformed, so that the reliability of electric connection contact is ensured, the temperature rise is reduced, and the service life is prolonged.

Description

Drawer base circuit breaker

Technical Field

The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a drawer base circuit breaker.

Background

Because of the convenience of detection and maintenance, withdrawable universal circuit breakers are widely used. The withdrawable universal circuit breaker is divided into a circuit breaker body and a drawer seat, wherein the body can be pushed in or pulled out in the drawer seat. The drawer base is connected into the power distribution network, and when the circuit breaker needs to be overhauled, the circuit breaker body only needs to be pulled out from the drawer base. Therefore, the drawer-type circuit breaker is adopted, so that the maintenance and the replacement are quite convenient.

The drawer seat is provided with an outlet line which is used for being electrically connected with the conducting bar in the cabinet. In the drawer seat, the outgoing line is electrically connected with the contact bridge, and as the two ends of the outgoing line are all required to be connected with other conductive parts, the outgoing line is often subjected to larger acting force. The prior drawer seat outlet structure is disclosed by fig. 1, the outlet 1 comprises a copper bar 11, an upper bracket 12 and a lower bracket 13, wherein the upper bracket 12 and the lower bracket 13 are arranged on the upper side and the lower side of the copper bar 11. In order to be suitable for vertical outgoing lines, the copper bar 11 further comprises a vertical bar 100, a first notch 101 is formed in the vertical bar 100, a second notch 200 is formed in the copper bar 11, and when the vertical bar 100 is welded with the copper bar 11, the first notch 101 is spliced with the second notch 200. The outlet line is often deformed when being subjected to a large force, and the bending strength of the outlet line is insufficient, so that the outlet line has room for improvement.

Disclosure of Invention

The utility model aims to provide a drawer-base circuit breaker, which improves the bending strength of a wire outlet row and prevents the wire outlet row from deforming by arranging a reinforced stamping part on a bracket, thereby ensuring the reliability of electric connection contact, reducing temperature rise and prolonging the service life.

The utility model aims to achieve the purpose, and the drawer base circuit breaker comprises an outgoing line row and a bottom frame, wherein the bottom frame is positioned at the rear side of the drawer base, the outgoing line row comprises a copper bar and a support, the support is fixed with the copper bar and also fixed with the bottom frame, the support comprises a first mounting plate and a second mounting plate which are formed by bending, the first mounting plate is used for fixedly mounting the bottom frame, the second mounting plate is used for fixedly mounting the copper bar, and a reinforcing stamping part is arranged on the first mounting plate and/or the second mounting plate.

In a specific embodiment of the utility model, the support is a pair, including an upper support and a lower support, and the upper support and the lower support are installed on the upper side and the lower side of the copper bar.

In a specific embodiment of the present utility model, the reinforcing punched portion is located on the first mounting plate.

In another specific embodiment of the present utility model, the first mounting plate and the second mounting plate are disposed at 90 °.

In yet another specific embodiment of the present utility model, the reinforcing punched portion is a semi-conical protrusion, or a triangular protrusion, or a square protrusion, or a semi-circular protrusion.

In yet another specific embodiment of the present utility model, one end of the reinforcing punched portion is located at the junction between the first mounting plate and the second mounting plate.

In yet another specific embodiment of the present utility model, the first mounting plate is provided with a first fixing hole, and the second mounting plate is provided with a second fixing hole.

In a further specific embodiment of the present utility model, the number of the outgoing lines is six, and the outgoing lines are arranged in an upper row and a lower row, and each row is three, and the upper row and the lower row correspond to one phase of contact.

In a further specific embodiment of the present utility model, the upper bracket and the lower bracket are made of sheet metal through sheet metal.

In yet another embodiment of the present utility model, the width of the clamping end of the copper bar, which is engaged with the contact bridge, is greater than the width of the end of the copper bar, which is engaged with the conductive bar.

The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: through the improvement to the support structure fixedly mounted on the copper bar, the reinforcing stamping part is additionally arranged on the support, the bending strength of the outgoing line can be greatly improved, and the outgoing line is prevented from deforming, so that the reliability of electric connection contact is ensured, the temperature rise is reduced, and the service life is prolonged.

Drawings

Fig. 1 is a schematic diagram of an outlet row of a drawer-base circuit breaker according to the prior art;

fig. 2 is a schematic structural view of a drawer-base circuit breaker according to the present utility model;

FIG. 3 is a schematic view of one side of the outlet row of the drawer seat according to the present utility model;

FIG. 4 is a schematic view of the other side of the outlet row of the drawer seat according to the present utility model;

fig. 5 is a schematic structural view of the upper bracket according to the present utility model.

In the figure: 1. the wire outlet row, 11, copper bars, 111, clamping ends, 1111, clamping grooves, 12, an upper bracket, 121, a reinforcing punching part, 122, a first fixing hole, 123, a first mounting plate, 124, a second mounting plate, 125, a second fixing hole and 13, a lower bracket; 2. a chassis; 3. an insulating housing; 100. vertical row 101. First notch; 200. and a second notch.

Detailed Description

The following detailed description of specific embodiments of the utility model, while given in connection with the accompanying drawings, is not intended to limit the scope of the utility model, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the utility model.

In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.

Referring to fig. 2, the present utility model relates to a drawer-type circuit breaker, which includes a drawer and a circuit breaker body (not shown). The breaker body can be pushed in or pulled out relative to the drawer seat. The drawer seat comprises an outgoing line row 1 and an underframe 2. The chassis 2 is located at the rear side of the drawer seat, the outgoing line row 1 is installed on the chassis 2, and the outgoing line row 1 is used for electrically connecting the drawer seat with the conducting bar in the cabinet, so that the outgoing line row 1 is connected into the power distribution network.

According to the different circuit breakers, the number of the outgoing lines 1 is correspondingly adjusted according to the specifications of the circuit breakers. For example, the circuit breaker is a three-phase circuit breaker, the number of the outlet rows 1 is six, and the circuit breaker is arranged in an upper row and a lower row, three of the outlet rows are arranged in each row, and the upper outlet row 1 and the lower outlet row 1 correspond to one phase of contact.

Above the outlet line 1 is an insulating housing 3, the insulating housing 3 is located above the chassis 2, and forms the top of the circuit breaker.

Referring to fig. 3, 4 and 5, the outlet bar 1 includes a copper bar 11 and a bracket, wherein the bracket is fixed to the copper bar 11 and is also fixed to the chassis 2. Specifically, the support comprises an upper support 12 and a lower support 13, and the upper support 12 and the lower support 13 are arranged on the upper side and the lower side of the copper bar 11. When the upper bracket 12 and the lower bracket 13 are mounted on the underframe 2, the wire outlet row 1 completes the mounting and positioning.

In general, the copper bar 11 is a copper product, and has excellent electrical conductivity, the upper bracket 12 and the lower bracket 13 are made of sheet metal, and zinc coating is usually performed on the surfaces of the upper bracket 12 and the lower bracket 13.

One end of the copper bar 11 is electrically connected with a contact bridge in the drawer seat, and the other end of the copper bar is electrically connected with a conductive bar in the switch cabinet. In this embodiment, the width of the clamping end 111 of the copper bar 11 matched with the contact bridge is greater than the width of the end of the copper bar 11 matched with the conductive bar. The arrangement can save materials and reduce the cost of the circuit breaker while ensuring excellent electrical performance of the outlet line 1.

The clamping end 111 is provided with a pair of clamping grooves 1111, and the clamping grooves 1111 are correspondingly positioned on the upper surface and the lower surface of the clamping end 111. The clamping groove 1111 is used for clamping the contact bridge, so as to ensure reliable electrical connection between the contact bridge and the clamping groove.

The upper bracket 2 comprises a first mounting plate 123 and a second mounting plate 124 which are formed by bending. Preferably, the first mounting plate 123 and the second mounting plate 124 are disposed at 90 °. Wherein the first mounting plate 123 is used for fixing the bottom frame 2, and the second mounting plate 124 is used for fixing the copper bar 11.

More specifically, the first mounting plate 123 is provided with a first fixing hole 122, and the second mounting plate 124 is provided with a second fixing hole 125. The first fixing hole 122 and the second fixing hole 125 are used for fixing, that is, are fixed by matching with a screw for mounting.

The first mounting plate 123 is additionally provided with a reinforcing press portion 121, and the number of the reinforcing press portions 121 is not limited at all, and may be one or more, in this embodiment, two reinforcing press portions are illustrated. The strength of the first mounting plate 123 can be greatly improved by adding the reinforcing punch 121, so that the first mounting plate has stronger impact resistance and is not easy to deform.

Preferably, one end of the reinforcing punch 121 is located at the junction between the first mounting plate 123 and the second mounting plate 124. This arrangement allows the first mounting plate 123 to bend from the joint with a higher impact strength.

More preferably, the reinforcing punched part 121 is a semi-conical protrusion, and the use of the semi-conical structure is compared with the triangular protrusion, the square protrusion, the semi-circular protrusion and other punched parts, so that the cracking of the reinforcing punched part 121 in the processing process can be effectively prevented, and the yield can be improved.

The lower support 13 likewise comprises two folds arranged at right angles, one of which is intended for a fixed mounting with the chassis 2 and the other for a fixed mounting with the copper bar 11.

More preferably, the reinforcing punched part 121 is further located on the lower bracket 13, thereby maximizing the impact strength of the outlet row 1.

Claims

1. The utility model provides a drawer base circuit breaker, includes wire outgoing line row (1) and chassis (2), chassis (2) be located drawer base rear side, wire outgoing line row (1) include copper bar (11) and support, the support with copper bar (11) fixed, the support still with chassis (2) fixed, its characterized in that: the support comprises a first mounting plate (123) and a second mounting plate (124) which are formed by bending, wherein the first mounting plate (123) is used for fixedly mounting the underframe (2), the second mounting plate (124) is used for fixedly mounting the copper bar (11), and the first mounting plate (123) and/or the second mounting plate (124) are/is provided with a reinforced stamping part (121).

2. A drawer-stand circuit breaker according to claim 1, characterized in that: the pair of brackets comprises an upper bracket (12) and a lower bracket (13), and the upper bracket (12) and the lower bracket (13) are arranged on the upper side and the lower side of the copper bar (11).

3. A drawer-stand circuit breaker according to claim 1, characterized in that: the reinforcing punched part (121) is positioned on the first mounting plate (123).

4. A drawer-stand circuit breaker according to claim 1, characterized in that: the first mounting plate (123) and the second mounting plate (124) are arranged at 90 degrees.

5. A drawer-stand circuit breaker according to claim 1, characterized in that: the reinforcing stamping part (121) is a semicircular conical bulge, a triangular bulge, a square bulge or a semicircular bulge.

6. A drawer-stand circuit breaker according to claim 3, characterized in that: one end of the reinforcing stamping part (121) is positioned at the joint between the first mounting plate (123) and the second mounting plate (124).

7. The drawer-stand circuit breaker of claim 6, wherein: the first mounting plate (123) is provided with a first fixing hole (122), and the second mounting plate (124) is provided with a second fixing hole (125).

8. A drawer-stand circuit breaker according to claim 1, characterized in that: the number of the outgoing lines (1) is six, the outgoing lines are arranged in an array manner into an upper row and a lower row, each row is three, and the upper outgoing line and the lower outgoing line (1) correspond to one phase of contact.

9. A drawer-stand circuit breaker according to claim 2, characterized in that: the upper bracket (12) and the lower bracket (13) are made of metal plates through metal plates.

10. A drawer-stand circuit breaker according to claim 1, characterized in that: the width of the clamping end (111) of the copper bar (11) matched with the contact bridge is larger than that of one end of the copper bar (11) matched with the conductive bar.