CN219350117U

CN219350117U - Wiring structure of molded case circuit breaker

Info

Publication number: CN219350117U
Application number: CN202320113714.8U
Authority: CN
Inventors: 张海国; 李如甲; 赵轶磊
Original assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Current assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-07-14
Anticipated expiration: 2033-01-19

Abstract

The utility model relates to a wiring structure of a molded case circuit breaker, which comprises a base (6), a wiring row (2), wiring posts (7), a fixed contact (3) and a plastic sleeve (5), wherein a front board and rear board wiring structure (61) is arranged on the base (6); the front plate and rear plate wiring structure (61) is provided with a groove with the same shape as the plastic sleeve (5), and the plastic sleeve (5) is embedded in the front plate and rear plate wiring structure (61) through the groove; the front wiring of the board of the plastic-case circuit breaker is realized by installing the plastic sleeve (5) and the wiring row (2), and the rear wiring of the board of the plastic-case circuit breaker is realized by removing the plastic sleeve (5) and the wiring row (2) and installing the wiring post (7). The utility model improves the traditional board rear wiring mode by adding the plastic sleeve structure, changes the original board rear wiring mode of breaking the support on the base into the mode of adding a plastic piece on the base, removes the process of manually breaking the support of the base, and reduces the workload during assembly.

Description

Wiring structure of molded case circuit breaker

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to a wiring structure of a plastic shell circuit breaker.

Background

Circuit breakers are an important component of the electrical industry and have found widespread use. When the circuit works normally, the circuit breaker can achieve the functions of power failure, power supply, circuit conversion and the like by closing or opening the circuit for supplying electric energy. When the circuit has faults such as overload, voltage loss, undervoltage or short circuit, the circuit breaker can automatically cut off the circuit, so that the safety of workers and the normal operation of equipment are prevented from being endangered by the circuit faults.

The plastic shell circuit breaker uses the plastic insulator as the shell of the circuit breaker, and the contact, the arc extinguishing chamber, the release, the operating system and the like are all arranged in the plastic shell, so that interphase insulation and isolation from the conductor are easy to realize. The molded case circuit breaker has the characteristics of compact structure, small volume, light weight and the like, but has low capability of bearing short-circuit current and lower intelligent degree than a frame-type circuit breaker, and is often used for small-capacity circuits with rated currents below 630A.

The traditional plastic shell type circuit breaker basically can meet the requirement of wiring before the board, but the wiring after the board is very troublesome, and a layer of thin structure is usually made on the base to support the hexagonal nut. When carrying out the wiring behind the board, need to knock this layer of structure off by hand, just can carry out wiring behind the board, destroy base self structure easily, and waste time and energy.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a wiring structure of a plastic-case circuit breaker, which can realize front wiring and rear wiring of the circuit breaker board without damaging a supporting part of a base.

The aim of the utility model can be achieved by the following technical scheme:

the wiring structure of the plastic-case circuit breaker comprises a base, a wiring row, a wiring post, a fixed contact, a plastic sleeve and a connecting structure, wherein the wiring row, the wiring post and the fixed contact are arranged on the base;

the front plate and rear plate wiring structure of the base is provided with a groove with the same shape as the plastic sleeve, and the plastic sleeve is embedded in the front plate and rear plate wiring structure of the base through the groove;

the front wiring structure of the plastic-shell circuit breaker is realized by installing the plastic sleeve and the wiring row, and the rear wiring structure of the plastic-shell circuit breaker is realized by removing the plastic sleeve and the wiring row and installing the wiring post.

Further, when the molded case circuit breaker is used for wiring before the board, a fixed contact and a wiring row are sequentially arranged above the plastic sleeve, the fixed contact is fastened on the base, one end of the wiring row is fastened on the fixed contact, and the other end of the wiring row is connected with the electrical cabinet.

Further, the inside hexagon nut A that is provided with of plastic sheath, the plastic sheath supports hexagon nut, promotes overall structure's stability, and the wiring row is fastened on the static contact through combination screw and hexagon nut A.

Further, when the molded case circuit breaker is used for wiring behind the board, the fixed contact is installed on the base, one end of the binding post penetrates through the round hole of the wiring structure behind the board front board and directly penetrates through the fixed contact, and the other end of the binding post is connected with the electrical cabinet.

Further, the binding post is fixed on the base through a hexagonal nut B and a screw.

Further, the upper end of the plastic sleeve is of a round structure, the lower end of the plastic sleeve is of a square structure, the plastic sleeve is effectively clamped in the base surface, the plastic sleeve is prevented from rotating in the base, a groove is formed in the plastic sleeve, and a round hole penetrating through the plastic sleeve is formed in the middle of the groove.

Further, the groove is a hexagonal groove, and the groove is matched with the shape of the hexagonal nut to prevent the hexagonal nut from rotating together with the combined screw.

Further, the wiring structure behind the board front plate is provided with a step structure, the upper layer of the step is a groove with the same shape as the plastic sleeve, and the lower layer of the step is a through hole penetrating through the base.

Further, when the molded case circuit breaker is used for front board wiring, the plastic sleeve is embedded in the front board rear board wiring structure of the base through the step structure and is limited on the base through the step structure.

Further, when the molded case circuit breaker is used for the board rear connection, the terminal is fitted to the base through the through hole of the step structure, and the through hole is matched with the size of the tubular portion of the terminal.

Compared with the prior art, the utility model has the following advantages:

(1) Through adding a plastic sleeve structure and improving traditional board rear connection mode, the original board rear connection mode of the support on the breaking base is changed into that a plastic piece is additionally arranged on the base, the process of manually breaking the support of the base is removed, and the workload and the working time during assembly are reduced.

(2) In the controllable scope of cost, reduce the destruction to base supporting part, guaranteed the function and the aesthetic property of base, realized that wiring before the board and wiring behind the board can use same pair mould, simplified the installation method, improved assembly work efficiency.

Drawings

FIG. 1 is a schematic view of the structure of the front wiring of the board of the present utility model;

FIG. 2 is a schematic view of the structure of the utility model when the board is wired;

FIG. 3 is a schematic view of the plastic sleeve of the present utility model;

fig. 4 is a schematic view of the front and rear wiring structure of the board of the present utility model.

In the figure: 1. a combination screw; 2. a wiring row; 3. a stationary contact; 41. a hexagonal nut A; 42. a hexagonal nut B; 5. a plastic sleeve; 6. a base; 61. a board front board rear wiring structure; 7. and (5) a binding post.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1-4, a wiring structure of a molded case circuit breaker comprises a base 6, a wiring row 2, a wiring post 7 and a fixed contact 3, wherein the wiring row 2, the wiring post 7 and the fixed contact 3 are arranged on the base 6, and further comprises a plastic sleeve 5, and a board front board rear wiring structure 61 is arranged on the base 6; the front board rear wiring structure 61 is provided with a groove with the same shape as the plastic sleeve 5, and the plastic sleeve 5 is embedded in the front board rear wiring structure 61 of the base 6 through the groove; the front-plate wiring structure of the plastic case circuit breaker is realized by installing the plastic sleeve 5 and the wiring row 2, and the rear-plate wiring structure of the plastic case circuit breaker is realized by removing the plastic sleeve 5 and the wiring row 2 and installing the wiring post 7.

As shown in fig. 3, the upper end of the plastic sleeve 5 is of a circular structure, the lower end of the plastic sleeve is of a square structure, a groove is formed in the plastic sleeve 5, the groove is a hexagonal groove, and the groove is matched with the hexagonal nut in shape, so that the hexagonal nut and the combined screw are prevented from rotating together. A round hole penetrating through the plastic sleeve 5 is arranged in the middle of the groove.

In this embodiment, the molded case circuit breaker is used for wiring before the board, as shown in fig. 1, the inside hexagonal nut a41 that is provided with of plastic sheath 5 is equipped with fixed contact 3 and wiring row 2 in proper order above the plastic sheath 5, fixed contact 3 fastens on base 6, and wiring row 2 is fastened on fixed contact 3 through combination screw 1 and hexagonal nut a41, wiring row 2 one end fastens on fixed contact 3, the wiring row 2 other end links to each other with the electrical cabinet, accomplishes board front wiring process.

The board front board rear wiring structure 61 is provided with a step structure, the upper layer of the step is a groove with the same shape as the plastic sleeve 5, and the lower layer of the step is a through hole penetrating through the base 6.

The plastic sleeve 5 is embedded in the wiring structure 61 behind the front plate of the base 6 through the step structure, and is limited on the base 6 through the step structure, the plastic sleeve 5 is effectively clamped in the base 6 through the structure, the plastic sleeve 5 is prevented from rotating in the base 6, and the plastic sleeve 5 can support the hexagonal nut, so that the stability of the whole structure is improved.

Example 2

In this embodiment, the molded case circuit breaker is used for wiring after the board, as shown in fig. 2, after the plastic part 5 and the wiring row 2 are removed, the stationary contact 3 is mounted on the base 6, one end of the terminal 7 passes through the circular hole of the board front board rear wiring structure 61 and directly passes through the stationary contact 3, and the other end of the terminal 7 is connected with the electrical cabinet. The binding post 7 is fixed on the base 6 through a hexagonal nut B42 and a screw.

The board front board rear wiring structure 61 is provided with a step structure, the upper layer of the step is a groove with the same shape as the plastic sleeve 5, and the lower layer of the step is a through hole penetrating through the base 6. The through holes are matched with the tubular parts of the binding posts 7 in size, and when the molded case circuit breaker is used for wiring after a board, the binding posts 7 are installed on the base 6 through the through holes with the step structures and are fixed through nuts. Through adding a plastic sleeve structure and improving traditional board rear connection mode, the original board rear connection mode of the support on the breaking base is changed into that a plastic piece is additionally arranged on the base, the process of manually breaking the support of the base is removed, and the workload and the working time during assembly are reduced. In the controllable scope of cost, reduce the destruction to base supporting part, guaranteed the function and the aesthetic property of base, realized that wiring before the board and wiring behind the board can use same pair mould, simplified the installation method, improved assembly work efficiency.

It should be noted that, in the description of the present utility model, the terms "upper," "lower," "inner," "outer," "front," "rear," "both ends," "one end," "the other end," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims

1. The wiring structure of the plastic-case circuit breaker comprises a base (6), a wiring row (2), a binding post (7) and a fixed contact (3), wherein the wiring row (2), the binding post (7) and the fixed contact (3) are arranged on the base (6), and the wiring structure is characterized by further comprising a plastic sleeve (5), and a board front board rear wiring structure (61) is arranged on the base (6);

the front plate and rear plate wiring structure (61) is provided with a groove with the same shape as the plastic sleeve (5), and the plastic sleeve (5) is embedded in the front plate and rear plate wiring structure (61) of the base (6) through the groove;

the front wiring structure of the plastic-case circuit breaker is realized by installing the plastic sleeve (5) and the wiring row (2), and the rear wiring structure of the plastic-case circuit breaker is realized by removing the plastic sleeve (5) and the wiring row (2) and installing the wiring post (7).

2. The wiring structure of the molded case circuit breaker according to claim 1, wherein when the molded case circuit breaker is used for front wiring of a board, a fixed contact (3) and a wiring row (2) are sequentially installed above the plastic sleeve (5), the fixed contact (3) is fastened on the base (6), one end of the wiring row (2) is fastened on the fixed contact (3), and the other end of the wiring row (2) is connected with an electrical cabinet.

3. The wiring structure of the molded case circuit breaker according to claim 2, wherein the plastic cover (5) is internally provided with a hexagonal nut a (41), and the wiring row (2) is fastened on the stationary contact (3) through the combination screw (1) and the hexagonal nut a (41).

4. The wiring structure of the molded case circuit breaker according to claim 1, wherein when the molded case circuit breaker is used for board rear wiring, the stationary contact (3) is mounted on the base (6), one end of the binding post (7) passes through a round hole of the board front board rear wiring structure (61) and directly passes through the stationary contact (3), and the other end of the binding post (7) is connected with the electrical cabinet.

5. The wiring structure of a molded case circuit breaker according to claim 4, wherein the terminal (7) is fixed to the base (6) by a hexagonal nut B (42) and a screw.

6. The wiring structure of the molded case circuit breaker according to claim 1, wherein the upper end of the plastic sleeve (5) is of a round structure, the lower end of the plastic sleeve is of a square structure, a groove is formed in the plastic sleeve (5), and a round hole penetrating through the plastic sleeve (5) is formed in the middle of the groove.

7. The connection structure of a molded case circuit breaker according to claim 6, wherein the recess is a hexagonal recess, and the recess is matched with a hexagonal nut in shape.

8. The wiring structure of a molded case circuit breaker according to claim 1, wherein the front and rear wiring structures (61) of the board are provided with step structures, the upper step layer is a groove with the same shape as the plastic sleeve (5), and the lower step layer is a through hole penetrating through the base (6).

9. A wiring structure of a molded case circuit breaker according to claim 8, characterized in that the plastic cover (5) is fitted into the front-plate rear wiring structure (61) of the base (6) through the step structure and is limited to the base (6) through the step structure when the molded case circuit breaker is used for front-plate wiring.

10. A wiring structure of a molded case circuit breaker according to claim 8, characterized in that the terminal (7) is fitted into the base (6) through a through hole of the step structure, which is matched with the size of the tubular portion of the terminal (7), when the molded case circuit breaker is used for board rear wiring.