Residual-current circuit breaker capable of positive and negative wiring

Abstract

The utility model belongs to the field of residual-current circuit breakers, and particularly relates to a residual-current circuit breaker capable of being positively and negatively connected, which comprises a machine body. A wiring hole is formed in the left side wall and located on the upper side of the machine body, a wire outlet end is installed at the bottom of an inner cavity of the machine body and corresponds to the wiring hole, a connecting copper sheet is installed at the wire outlet end, and a first wire is arranged at the other end of the connecting copper sheet. The problem that the electric leakage circuit breaker is damaged if the electric leakage circuit breaker cannot be reversely connected is solved, so that the use flexibility and convenience of the electric leakage circuit breaker are improved; through the design of the dehumidification structure, the problems that an existing leakage protector is lack of a dehumidification device, the internal humidity of the leakage protector is too high, and the performance of an insulating material in the leakage protector is reduced are solved, the risk of short circuit of the leakage protector is greatly reduced, and the use stability of the leakage protector is improved.

Description

Technical Field

[0001] The utility model relates to the field of leakage circuit breakers, in particular to a leakage circuit breaker which can be connected in forward and reverse directions. Background Art

[0002] A leakage protector (referred to as a leakage switch or leakage circuit breaker) is an electrical safety device that is used to automatically cut off the power supply in the event of a leakage fault in the equipment or in the event of a fatal electric shock. It provides overload and short-circuit protection and can be used as an infrequent transfer starter for the line.

[0003] Existing leakage protectors can only be connected in the forward direction, that is, the line enters at one end and exits at the other end, and cannot be connected in reverse, otherwise they will be damaged. In addition, existing leakage protectors lack dehumidification devices. Excessive humidity inside the leakage protector will cause the performance of its internal insulation material to deteriorate, thereby increasing the risk of short circuit. Therefore, to address the above problems, a leakage circuit breaker that can be connected in the forward and reverse directions is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, the existing leakage protector can only be connected in the forward direction, that is, the line enters at one end and the line exits at the other end, and cannot be connected in reverse, otherwise it will be damaged; and the existing leakage protector lacks a dehumidification device, and excessive humidity inside the leakage protector will cause the performance of its internal insulation material to deteriorate, thereby increasing the risk of short circuit. The utility model proposes a leakage circuit breaker that can be connected in the forward and reverse directions.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a leakage circuit breaker capable of forward and reverse wiring, comprising a body; a wiring hole is opened on the left side wall of the body and located on the upper side, an outlet terminal is installed at the bottom of the inner cavity of the body and corresponding to the wiring hole, a connecting copper sheet is installed on the outlet terminal, a first wire is provided at the other end of the connecting copper sheet, a resistor is provided at the other end of the first wire and located in the inner cavity of the body, a second wire is provided at the other end of the resistor, a connecting column is installed at the bottom of the inner cavity of the body, a test button is installed on the body through the connecting hole, a fixing column is installed at the bottom of the inner cavity of the body, a button spring is installed on the outer wall of the fixing column, and an L-pole copper piece is provided at the inner cavity base of the body.

[0006] Preferably, an inlet terminal is installed at the bottom of the inner cavity of the body and on the right side, and an operating handle is installed on the body.

[0007] Preferably, an air inlet is provided on the left side wall of the machine body, an exhaust hole is provided on the front side of the machine body, and a dehumidification structure is installed on the front side of the machine body corresponding to the exhaust hole;

[0008] The dehumidification structure includes a fixed cylinder, a support plate is installed on the inner wall of the fixed cylinder, a motor is installed on the front of the support plate, a fan blade is provided at the driving end of the motor and located inside the fixed cylinder, and a mesh plate is installed on the inner wall of the fixed cylinder and located in front of the fan blade;

[0009] The dehumidification structure further includes a humidity sensor and a controller.

[0010] Preferably, the other end of the second wire is connected to the outer wall of the connecting column.

[0011] Preferably, the rear end of the fixing cylinder is fixedly connected to the front side of the machine body.

[0012] Preferably, the humidity sensor is connected to the inner cavity side wall of the body, and the controller is connected to the inner cavity side wall of the body.

[0013] Preferably, the connecting column is made of metal.

[0014] Preferably, an upper cover is mounted on the upper port of the body by screws.

[0015] The utility model is beneficial in that:

[0016] 1. The present invention utilizes a resistor structure design to replace the resistor connected to the incoming line terminal in the prior art with a resistor connected to the outgoing line terminal. After closing the circuit breaker, one end of the fixed column contacts the connecting column, and the other end contacts the L-pole copper piece. Opening the circuit breaker creates a double-breakpoint protection, achieving the function of forward and reverse wiring. This solves the problem of existing leakage protectors that can only be connected in the forward direction, i.e., incoming line at one end and outgoing line at the other, and cannot be reversely connected, otherwise it will be damaged. This improves the flexibility and convenience of using the leakage circuit breaker.

[0017] 2. The utility model adopts a dehumidification structure design and uses a motor to drive the fan blades to rotate. The fan blades discharge the humid air inside the machine body, enhance the internal air circulation of the machine body, thereby promoting the evaporation and discharge of moisture inside the machine body, and realizing the function of dehumidifying the machine body. It solves the problem that the existing leakage protector lacks a dehumidification device and the problem that the internal humidity of the leakage protector is too high, which will lead to the reduction of the performance of the internal insulation material. It greatly reduces the risk of short circuit of the leakage protector and improves the stability of the leakage protector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the southeast isometric overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the southeast isometric partial structure of the present utility model;

[0021] Figure 3 It is a schematic diagram of the southwest isometric partial structure of the present utility model;

[0022] Figure 4 This is an enlarged structural diagram of point A of the present utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the dehumidification structure of the present invention.

[0024] In the figure: 1. Body; 2. Wiring hole; 3. Outlet terminal; 4. Connecting copper sheet; 5. First wire; 6. Resistor; 7. Second wire; 8. Connecting column; 9. Test button; 10. Fixing column; 11. Button spring; 12. L-pole copper piece; 13. Inlet terminal; 14. Operating handle; 15. Air inlet; 16. Exhaust hole; 17. Dehumidification structure; 1701. Fixing cylinder; 1702. Support plate; 1703. Motor; 1704. Fan blades; 1705. Mesh plate; 1706. Humidity sensor; 1707. Controller; 18. Top cover. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The following is combined with Figure 1-5 To further explain this application,

[0027] The embodiment of the present application discloses a leakage circuit breaker that can be connected in both forward and reverse directions. Figure 1 and Figure 5A leakage circuit breaker capable of forward and reverse wiring comprises a body 1; a wiring hole 2 is provided on the upper side of the left side wall of the body 1; an outlet terminal 3 is installed at the bottom of the inner cavity of the body 1 and corresponds to the wiring hole 2; a connecting copper sheet 4 is installed on the outlet terminal 3; a first wire 5 is provided at the other end of the connecting copper sheet 4; a resistor 6 is provided at the other end of the first wire 5 and is located in the inner cavity of the body 1; a second wire 7 is provided at the other end of the resistor 6; a connecting column 8 is installed at the bottom of the inner cavity of the body 1; a test button 9 is installed on the body 1 through the connecting hole; and a fixing column is installed at the bottom of the inner cavity of the body 1. 10. A button spring 11 is installed on the outer wall of the fixed column 10, and an L-pole copper piece 12 is provided at the inner base of the body 1. The resistor 6 connected to the incoming terminal 13 in the prior art is changed to be connected to the outgoing terminal 3. After closing the switch, one end of the fixed column 10 contacts the connecting column 8, and the other end contacts the L-pole copper piece 12. The switch is opened to form double breakpoint protection, realizing the function of positive and reverse wiring, solving the problem that the existing leakage protector can only be connected in the positive direction, that is, one end inputs the line and the other end outputs the line, and cannot be reversed, otherwise it will be damaged, thereby improving the flexibility and convenience of use of the leakage circuit breaker.

[0028] Reference Figure 1-3 , an inlet terminal 13 is installed at the bottom of the inner cavity of the body 1 and on the right side, and an operating handle 14 is installed on the body 1;

[0029] Reference Figure 2 and Figure 5 An air inlet 15 is provided on the left side wall of the body 1, an exhaust hole 16 is provided on the front of the body 1, and a dehumidification structure 17 is installed on the front of the body 1 and corresponding to the exhaust hole 16;

[0030] The dehumidification structure 17 includes a fixed cylinder 1701, a support plate 1702 is mounted on the inner wall of the fixed cylinder 1701, a motor 1703 is mounted on the front of the support plate 1702, a fan blade 1704 is provided at the driving end of the motor 1703 and located inside the fixed cylinder 1701, and a mesh plate 1705 is mounted on the inner wall of the fixed cylinder 1701 and in front of the fan blade 1704;

[0031] The dehumidification structure 17 further includes a humidity sensor 1706 and a controller 1707;

[0032] Among them, through the setting of the dehumidification structure 17, the motor 1703 drives the fan blades 1704 to rotate, and the fan blades 1704 discharge the humid air inside the body 1, thereby enhancing the internal air circulation of the body 1, thereby promoting the evaporation and discharge of moisture inside the body 1, and realizing the function of dehumidifying the body 1. This solves the problem that the existing leakage protector lacks a dehumidification device and the excessive humidity inside the leakage protector will lead to the deterioration of the insulation material performance inside the leakage protector. This greatly reduces the risk of short circuit of the leakage protector and improves the stability of the leakage protector.

[0033] Reference Figure 1-5 The other end of the second wire 7 is connected to the outer wall of the connecting column 8; the rear end of the fixing cylinder 1701 is fixedly connected to the front of the body 1; the humidity sensor 1706 is connected to the inner cavity side wall of the body 1, and the controller 1707 is connected to the inner cavity side wall of the body 1; the connecting column 8 is made of metal; the upper port of the body 1 is fixed with an upper cover 18 by screws;

[0034] The connecting column 8 is made of metal material, so that the connecting column 8 has conductive properties;

[0035] Working principle: The resistor 6 connected to the incoming terminal 13 in the prior art is connected to the outgoing terminal 3 instead. After the manual operating handle 14 is closed, one end of the fixed column 10 contacts the connecting column 8 and the other end contacts the L-pole copper piece 12. The operating handle 14 is driven to open the circuit, and the two ends of the fixed column 10 are disconnected from the connecting column 8 and the L-pole copper piece 12 respectively, forming a double breakpoint protection and realizing the function of positive and negative wiring. The provision of the fixed column 10 solves the problem that the existing leakage protector can only be connected in the positive direction, that is, the line enters at one end and the line exits at the other end, and cannot be reversely connected, otherwise it will be damaged, thereby improving the flexibility and convenience of the leakage circuit breaker.

[0036] A reference value is set for the humidity sensor 1706, and the humidity sensor 1706 is used to sense the air humidity in the body 1. When the air humidity of the body 1 exceeds the reference value set by the humidity sensor 1706, the humidity sensor 1706 transmits information to the controller 1707, and the controller 1707 drives the motor 1703 to work. The motor 1703 drives the fan blades 1704 to rotate, and the fan blades 1704 discharge the humid air inside the body 1, thereby enhancing the internal air circulation of the body 1, thereby promoting the evaporation and discharge of moisture inside the body 1, and realizing the function of dehumidifying the body 1. When the humidity sensor 1706 senses that the air humidity in the body 1 is less than the reference value set by the humidity sensor 1706, the humidity sensor 1706 transmits information to the controller 1707, and the controller 1707 drives the motor 1703 to work. By setting the dehumidification structure 17, the problem of the existing leakage protector lacking a dehumidification device and the problem that excessive humidity inside the leakage protector will cause the performance of its internal insulation material to deteriorate is solved, the risk of short circuit of the leakage protector is greatly reduced, and the stability of the leakage protector is improved.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A leakage circuit breaker capable of forward and reverse wiring, comprising a body (1); characterized in that: A wiring hole (2) is provided on the left side wall of the body (1) and on the upper side. An outlet terminal (3) is installed at the bottom of the inner cavity of the body (1) and corresponding to the wiring hole (2). A connecting copper sheet (4) is installed on the outlet terminal (3). A first wire (5) is provided at the other end of the connecting copper sheet (4). A resistor (6) is provided at the other end of the first wire (5) and is located in the inner cavity of the body (1). A second wire (7) is provided at the other end of the resistor (6). A connecting column (8) is installed at the bottom of the inner cavity of the body (1). A test button (9) is installed on the body (1) through the connecting hole. A fixing column (10) is installed at the bottom of the inner cavity of the body (1). A button spring (11) is installed on the outer wall of the fixing column (10). An L-pole copper piece (12) is provided at the inner cavity base of the body (1).

2. The leakage circuit breaker capable of forward and reverse wiring according to claim 1, characterized in that: An inlet terminal (13) is installed at the bottom of the inner cavity of the machine body (1) and on the right side, and an operating handle (14) is installed on the machine body (1).

3. The leakage circuit breaker capable of forward and reverse wiring according to claim 1, characterized in that: An air inlet (15) is provided on the left side wall of the machine body (1), an exhaust hole (16) is provided on the front side of the machine body (1), and a dehumidification structure (17) is installed on the front side of the machine body (1) and corresponding to the exhaust hole (16); The dehumidification structure (17) comprises a fixed cylinder (1701), a support plate (1702) is mounted on the inner wall of the fixed cylinder (1701), a motor (1703) is mounted on the front of the support plate (1702), a fan blade (1704) is provided at the driving end of the motor (1703) and located inside the fixed cylinder (1701), and a mesh plate (1705) is mounted on the inner wall of the fixed cylinder (1701) and located in front of the fan blade (1704); The dehumidification structure (17) further includes a humidity sensor (1706) and a controller (1707).

4. The leakage circuit breaker capable of forward and reverse wiring according to claim 1, characterized in that: The other end of the second wire (7) is connected to the outer wall of the connecting column (8).

5. The leakage circuit breaker capable of forward and reverse wiring according to claim 3, characterized in that: The rear end of the fixed cylinder (1701) is fixedly connected to the front face of the machine body (1).

6. The leakage circuit breaker capable of forward and reverse wiring according to claim 3, characterized in that: The humidity sensor (1706) is connected to the inner cavity side wall of the body (1), and the controller (1707) is connected to the inner cavity side wall of the body (1).

7. The leakage circuit breaker capable of forward and reverse wiring according to claim 1, characterized in that: The connecting column (8) is made of metal.

8. The leakage circuit breaker capable of forward and reverse wiring according to claim 1, characterized in that: An upper cover (18) is mounted on the upper port of the machine body (1) via screws.

Images