Device for preventing wiring interphase short circuit of multi-pole circuit breaker

Abstract

The utility model discloses a device for preventing wiring interphase short circuit of a multi-pole circuit breaker. The device comprises a shell and a protection piece movably installed at the wiring position of the shell. The protection piece comprises a plate body, and a wire harness hole is formed in the plate body; a partition plate is arranged between every two adjacent wire harness holes. Grooves are evenly distributed in the partition plate. When the protection piece covers the wiring position of the shell, the conductive part of the wire penetrates through the wire harness hole and then is connected with the wiring terminal in the shell, the partition plate is used for promoting the two adjacent wires to be separated, the partition plate protrudes out of the plate body, and the creepage distance is enlarged through the groove in the partition plate, so that the phenomenon of short circuit between the two wires is prevented. On the basis, the protection part has a simple structure while improving the protection capability, and is convenient to disassemble and assemble with the shell, and particularly, the protection part has no influence on the structure of the shell while realizing the protection capability, so that the protection part can be independently produced and manufactured, and the processing difficulty and the production cost of the shell are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker wiring safety, in particular to a device for preventing interphase short circuits in multi-pole circuit breaker wiring. Background Art

[0002] Through searching, it is found that the prior art with patent number: CN207529888U has the following general scheme: including a circuit breaker, wiring ports are symmetrically arranged at the upper and lower ends of the circuit breaker, and the circuit breaker includes a circuit breaker cover and a base, and the circuit breaker cover and the base are both installed with a left boss and a right boss. Due to the setting of the left boss and the right boss, the creepage distance of the external power cord is increased when it is connected to the wiring port, and the electrical gap is isolated, which is very good to prevent the power accidents caused by the phase-to-phase short circuit, so as to effectively improve the phase-to-phase safety performance of the multi-pole small circuit breaker during use. It is not difficult to conclude from the above scheme that the prior art uses the boss directly arranged on the shell to expand the creepage gap between phases to complete the protection between phases; although it also has a strong protection capability, in actual production, the setting of the boss requires the mold to be modified, which leads to an increase in the production cost of the circuit breaker. Utility Model Content

[0003] The utility model aims to provide a device for preventing short circuit between phases of multi-pole circuit breaker wiring, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for preventing short circuit between phases of multi-pole circuit breaker wiring, comprising a shell, on which a wiring port is provided; a protective member is also provided on the shell, and the wiring port is covered by the protective member; the protective member comprises a plate body, and a wiring harness hole is provided on the plate body; a partition is also provided between two adjacent wiring harness holes, and grooves are evenly distributed on the partition.

[0005] As a preferred technical solution of the utility model: a protrusion is further provided on a side of the plate body facing the shell.

[0006] As a preferred technical solution of the utility model: the protrusion is partially inserted into the wiring port.

[0007] As a preferred technical solution of the utility model: the protrusion is made of rubber material.

[0008] As a preferred technical solution of the utility model: the protective member also includes an insulating member sleeved on the outside of the wire; wherein one end of the insulating member is located on the inner side of the plate body, and the other end of the insulating member is fixed on the wire.

[0009] As a preferred technical solution of the utility model: the insulating member includes a shell with a hollow structure inside; a pad is provided at one end of the shell facing the housing, and a fixing portion is provided at the other end of the shell.

[0010] As a preferred technical solution of the utility model: a fastener is provided to pass through the plate body and then connected to the shell, so as to fix the protective member and the insulating member on the shell.

[0011] By adopting the above technical solution, the beneficial effect of the utility model is as follows: when the protective member covers the connection of the shell, the conductive part of the wire passes through the harness hole and is connected to the terminal in the shell, and the partition is used to separate the two adjacent wires, and the partition protrudes from the plate body, and the groove on the partition is used to expand the creepage distance to prevent the short circuit between the two wiring phases. Based on this, the protective member has a simple structure while improving the protection capability, and is easy to disassemble and assemble with the shell. In particular, the protective member does not affect the structure of the shell while achieving the protection capability, so that the protective member can be independently produced and manufactured to reduce the processing difficulty and production cost of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the exploded structure of the protective element of the utility model;

[0014] Figure 3 This is a schematic diagram of the main structure of the board body of the utility model;

[0015] Figure 4 This is a schematic diagram of the main structure of the insulating member of the utility model;

[0016] Figure 5 It is a partially enlarged schematic diagram after decomposition of the utility model.

[0017] In the figure: 1, shell; 2, protective part; 20, plate; 21, partition; 22, insulating part; 23, harness hole; 24, groove; 25, protrusion; 26, pad; 27, fixing part; 28, shell; 3, wiring port; 4, fastener. DETAILED DESCRIPTION

[0018] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0019] See also Figure 1-5 The utility model provides an embodiment: a device for preventing short circuit between phases of multi-pole circuit breaker wiring, comprising a shell 1, on which a wiring port 3 is provided; a protective member 2 is also provided on the shell 1, and the wiring port 3 is covered by the protective member 2; the protective member 2 comprises a plate 20, and a wiring harness hole 23 is provided on the plate 20; a partition 21 is also provided between two adjacent wiring harness holes 23, and grooves 24 are evenly distributed on the partition 21.

[0020] To sum up, when the protective member 2 covers the wiring of the shell 1, the conductive part of the wire passes through the harness hole 23 and is connected to the wiring terminal in the shell 1. The partition 21 is used to separate the two adjacent wires, and the partition 21 protrudes from the plate body 20. The groove 24 on the partition 21 is used to expand the creepage distance to prevent a short circuit between the two wiring phases.

[0021] Based on this, the protective member 2 has a simple structure while improving the protective capability and is easy to assemble and disassemble from the shell 1. In particular, the protective member 2 does not affect the structure of the shell 1 while achieving the protective capability, so that the protective member 2 can be independently produced and manufactured to reduce the processing difficulty and production cost of the shell 1.

[0022] In addition, since a protrusion 25 is further provided on one side of the plate body 20 facing the housing 1 , the protrusion 25 is utilized to extend the contact length between the protective member 2 and the wire, so as to reduce the exposed area of ​​the conductive portion of the wire.

[0023] Furthermore, in order to improve the stability of the protective member 2 after being connected to the shell 1, the protrusion 25 is partially inserted into the wiring port 3. Therefore, when the protrusion 25 is partially inserted into the wiring port 3, the contact area between the protective member 2 and the shell 1 can be expanded, which helps to improve the stability of the protective member 2 after being connected to the shell 1.

[0024] Furthermore, since the protrusion 25 is made of rubber material, the insulation capacity can be improved while the protrusion 25 can be easily inserted into the wiring port 3. In particular, when the protrusion 25 is made of elastic rubber material, the wiring port 3 where the protrusion 25 is inserted can also be tensioned in the wiring port 3 and fill the gap between the wire and the protrusion 25, thereby further improving the stability of the protective member 2 after being connected to the shell 1 and the insulation capacity of the protective member 2, and also improving the waterproof ability of the protective member 2.

[0025] On the basis of the above scheme, since the protective member 2 also includes an insulating member 22 that is sleeved on the outside of the wire; wherein one end of the insulating member 22 is located on the inner side of the plate body 20, and the other end of the insulating member 22 is fixed on the wire, therefore, when the insulating member 22 is sleeved on the wire, the insulating member 22 is used to once again improve the insulation capacity between phases, thereby further improving the insulation capacity of the device; in particular, the setting of the insulating member 22 also enables the device to be used on high-power circuit breakers.

[0026] Furthermore, since the insulating member 22 includes a shell 28 with a hollow structure inside, the sealing glue is poured into the shell 28 after the wire passes through; therefore, in addition to improving the stability of the connection between the wire and the insulating member 22, the insulation performance of the insulating member 22 can be further improved, so that the protective member 2 has sufficient insulation capacity when used on high-power circuit breakers.

[0027] Furthermore, since a pad 26 is provided at one end of the shell 28 facing the shell 1, and a fixing portion 27 is provided at the other end of the shell 28, when the plate body 20 is connected to the shell 1, the protrusion 25 squeezes the pad 26, causing the pad 26 to deform, thereby filling the gap between the shell 1 and the plate body 20, thereby preventing dust and rainwater from entering and improving the protection capability and protection level of the protective member 2.

[0028] In addition, the fastener 4 is provided to pass through the plate body 20 and then connected to the housing 1, so as to fix the protective member 2 and the insulating member 22 on the housing 1. Therefore, a suitable protective member 2 is selected according to the structure of the circuit breaker, and then it is fixed to the housing 1 by the fastener 4, wherein the fastener 4 is preferably a self-tapping screw. Based on this, the structure of the protective member 2 is changed to adapt to the structure of the circuit breaker, so that the processing difficulty and processing cost of the circuit breaker can be further reduced while improving the insulation capacity.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A device for preventing short circuit between phases of a multi-pole circuit breaker, characterized in that: It comprises a housing (1), wherein the housing (1) is provided with a wiring port (3); The housing (1) is also provided with a protective member (2), and the wiring port (3) is covered by the protective member (2); The protective member (2) comprises a plate body (20), and a wiring harness hole (23) is provided on the plate body (20); A partition plate (21) is also provided between two adjacent harness holes (23), and grooves (24) are evenly distributed on the partition plate (21).

2. A device for preventing short circuit between phases of multi-pole circuit breaker wiring according to claim 1, characterized in that: A protrusion (25) is also provided on a side of the plate body (20) facing the housing (1).

3. A device for preventing short circuit between phases of multi-pole circuit breaker wiring according to claim 2, characterized in that: The protruding portion (25) is partially inserted into the wiring port (3).

4. A device for preventing short circuit between phases of multi-pole circuit breaker wiring according to claim 3, characterized in that: The protruding portion (25) is made of rubber.

5. A device for preventing short circuit between phases of a multi-pole circuit breaker according to any one of claims 1 to 4, characterized in that: The protective member (2) further comprises an insulating member (22) sleeved on the outside of the conductive wire; wherein one end of the insulating member (22) is located on the inner side of the plate body (20), and the other end of the insulating member (22) is fixed on the conductive wire.

6. A device for preventing short circuit between phases of multi-pole circuit breaker wiring according to claim 5, characterized in that: The insulating member (22) comprises an outer shell (28) with a hollow structure inside; a pad (26) is provided at one end of the outer shell (28) facing the housing (1), and a fixing portion (27) is provided at the other end of the outer shell (28).

7. A device for preventing short circuit between phases of multi-pole circuit breaker connections according to claim 6, characterized in that: The protective component (2) and the insulating component (22) are fixed to the housing (1) by a fastener (4) that passes through the plate body (20) and is connected to the housing (1).

Images