Residual-current circuit breaker with N-pole wiring structure

Abstract

The utility model relates to a residual-current circuit breaker with an N-pole wiring structure. Mainly solves the problem that the N pole of the existing residual-current circuit breaker does not have an external wiring function and cannot meet the use requirement. The device is characterized in that the device also comprises a static contact (21) which is arranged in the N-pole chamber; the sinking groove (24) is formed in the inner wall of the N-pole chamber, one end of the power connection piece (23) is connected with the static contact, the middle end of the power connection piece (23) is arranged in the sinking groove, and the tail end of the power connection piece (23) extends out of the sinking groove and is used for being connected with a wire (9); and the flash barrier (24) at least partially covers the sinking groove, and the upper end surface of the flash barrier (24) is used for installing a first arc extinguish chamber (25) and separating the first arc extinguish chamber from the power connection sheet. According to the residual-current circuit breaker with the N-pole wiring structure provided by the utility model, the power is connected through the power connection sheet and the isolation is realized through the flash barrier, so that the N-pole safe wire outgoing effect is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch electric appliances, concretely relates to a residual-current circuit breaker with N-pole wiring structure. BACKGROUND

[0002] Residual-current protector, residual-current switch for short, also called residual-current circuit breaker, is mainly used for protecting the human body from electric shock when the equipment has a leakage fault and has overload and short-circuit protection functions, and can be used to protect the overload and short-circuit of a line or a motor, and can also be used as a line under normal circumstances.

[0003] The N-pole of the current residual-current circuit breaker does not have an external wiring function, which cannot meet the use requirement. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects of the background art, the utility model provides a residual-current circuit breaker with N-pole wiring structure, which mainly solves the problem that the N-pole of the current residual-current circuit breaker does not have an external wiring function, which cannot meet the use requirement.

[0005] The technical scheme of the utility model provides,

[0006] A residual-current circuit breaker with N-pole wiring structure, comprising a shell, an N-pole chamber and an L-pole chamber are arranged in the shell, and further comprising

[0007] A static contact is arranged in the N-pole chamber;

[0008] A sink is arranged on the inner wall of the N-pole chamber,

[0009] An electrical connection sheet is connected to the static contact at one end, arranged in the sink at the middle end, and the tail end is arranged outside the sink for connecting with a wire;

[0010] An arc separation plate at least partially covers the sink, and the upper end surface of the arc separation plate is used for installing a first arc extinguishing chamber and separating the first arc extinguishing chamber from the electrical connection sheet.

[0011] A convex seat is arranged in the shell, and a positioning hole matched with the convex seat is arranged on the arc separation plate.

[0012] A positioning groove is arranged on the upper end surface of the arc separation plate, the arc extinguishing chamber comprises a first positioning end surface and a second positioning end surface, the first positioning end surface is in contact with the inner wall of the positioning groove, and the second positioning end surface is arranged opposite to the convex seat.

[0013] A convex platform for limiting is arranged opposite to one side of the arc separation plate.

[0014] A first air outlet hole is arranged opposite to the first arc extinguishing chamber at the bottom end surface of the shell.

[0015] The shell comprises a middle shell, a front cover and a rear cover, an N-pole chamber is formed between the middle shell and the front cover, and an L-pole chamber is formed between the middle shell and the rear cover.

[0016] The middle shell is provided with a bending part towards the N-pole chamber, a second arc extinguishing chamber is installed in the bending part, part of the second arc extinguishing chamber is arranged in the N-pole chamber, and part of the second arc extinguishing chamber is arranged in the L-pole chamber.

[0017] The side wall of the shell is provided with a second air outlet hole, and the second air outlet hole is arranged opposite to the arc extinguishing chamber arranged in the N-pole chamber.

[0018] The side wall of the shell is provided with a third air outlet hole, and the third air outlet hole is arranged opposite to the arc extinguishing chamber arranged in the L-pole chamber.

[0019] The utility model discloses a leakage circuit breaker with N-pole wiring structure, which is connected to electricity through the electricity connection sheet and is isolated through the arc isolation plate, thereby playing a role of safe N-pole outlet. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three -dimensional schematic drawing of first embodiment of the utility model.

[0021] Figure 2 It is the internal three -dimensional schematic drawing of first embodiment of the utility model.

[0022] Figure 3 It is the partial explosion schematic drawing of first embodiment of the utility model.

[0023] Figure 4 It is the sectional view schematic drawing of first embodiment of the utility model.

[0024] Figure 5 It is the explosion schematic drawing of first embodiment of the utility model.

[0025] Figure 6 It is the explosion schematic drawing of first embodiment of the utility model.

[0026] Figure 7 It is the three -dimensional schematic drawing of first embodiment of the utility model.

[0027] Figure 8 It is the partial three -dimensional schematic drawing of first embodiment of the utility model. DETAILED DESCRIPTION

[0028] The utility model makes further illustration below combining with the drawing: a leakage circuit breaker with N pole wiring structure, including casing 1, N pole chamber 2 and L pole chamber 3 are equipped in the casing, still including static contact 21, be equipped in the N pole chamber;Sunk groove 24, be equipped in the inner wall of N pole chamber, the electrically conductive sheet 23, one end is connected with static contact, middle end is equipped in the sunk groove, tail end is used for connecting with wire 9 and stretches out in the sunk groove;Arc separation plate 24, at least partially covers the sunk groove, and its upper end surface is used for first arc extinguishing chamber 25 installation and separates the first arc extinguishing chamber with electrically conductive sheet apart.The installation time, the electrically conductive sheet is installed to the sunk groove, and its one end contacts static contact, and the other end is connected with wire (can adopt welding), can conveniently carry out wiring, and the arc extinguishing chamber is separated with electrically conductive sheet through arc separation plate, and use is safer, and L pole chamber is equipped with contact mechanism, tripping mechanism and the like, and it is prior art, and it is not repeated.

[0029] In the embodiment, as shown in the figure, the housing is provided with a boss 221, and the arc separation plate is provided with a positioning hole 220 matched with the boss. The two can be clamped together, etc., to facilitate the fixation of the arc separation plate.

[0030] In the embodiment, as shown in the figure, the upper end surface of the arc separation plate is provided with a positioning groove 222, and the arc extinguishing chamber includes a first positioning end surface 251 and a second positioning end surface 252. The first positioning end surface is in contact with the inner wall of the positioning groove, and the second positioning end surface is arranged opposite to the boss. The first positioning end surface can be the bottom end surface of the side plate of the arc extinguishing chamber, and the second positioning end surface can be the top end surface of the arc extinguishing grid of the arc extinguishing chamber, to achieve a certain limiting effect and prevent displacement of the arc extinguishing chamber.

[0031] In the embodiment, as shown in the figure, the L pole chamber is arranged opposite to the boss 26 on one side of the arc separation plate for limiting. Further increase the stability of installation.

[0032] In the embodiment, as shown in the figure, the bottom end surface of the housing is provided with a first air outlet 11 opposite to the first arc extinguishing chamber. For the first arc extinguishing chamber to exhaust air, it is safer to use.

[0033] In the embodiment, as shown in the figure, the housing includes a middle shell 101, a front cover and a rear cover. The N pole chamber is formed between the middle shell and the front cover, and the L pole chamber is formed between the middle shell and the rear cover. The middle shell, the front cover and the rear cover can be installed by screws.

[0034] In the embodiment, as shown in the figure, the middle shell is provided with a bending part 1011 facing the N-pole chamber, a second arc-extinguishing chamber 31 is installed in the bending part, part of the second arc-extinguishing chamber is arranged in the N-pole chamber, and part of the second arc-extinguishing chamber is arranged in the L-pole chamber. The inner wall of the bending part is used for installing the second arc-extinguishing chamber, the second arc-extinguishing chamber is the arc-extinguishing chamber of the L-pole, is relatively large, and the air outlet amount is also large, so that two channels are designed to use the air outlet thereof. The inside of the bending part forms a sink, the sink is used for installing the second arc-extinguishing chamber, and the sink faces the N-pole chamber.

[0035] In the embodiment, as shown in the figure, the side wall of the shell is provided with a second air outlet hole 12, and the second air outlet hole is arranged opposite to the arc-extinguishing chamber arranged in the N-pole chamber. One channel is arranged opposite to the arc-extinguishing chamber arranged in the N-pole chamber, and the channel is arranged in the N-pole chamber.

[0036] In the embodiment, as shown in the figure, the side wall of the shell is provided with a third air outlet hole 13, and the third air outlet hole is arranged opposite to the arc-extinguishing chamber arranged in the L-pole chamber. Another channel is arranged opposite to the arc-extinguishing chamber arranged in the L-pole chamber, and the channel is arranged in the L-pole chamber.

[0037] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0038] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0039] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. The embodiments should not be regarded as limiting the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. A residual current circuit breaker with an N-pole wiring structure, comprising a housing (1), wherein the housing is provided with an N-pole chamber (2) and an L-pole chamber (3), characterized in that: Also includes The stationary contact (21) is located in the N-pole chamber; A settling tank (24) is provided on the inner wall of the N-pole chamber. The connecting piece (23) is connected at one end to the stationary contact, the middle end is located in the sink, and the tail end extends out of the sink for connection with the wire (9). An arc-blocking plate (24) at least partially covers the sink, and its upper surface is used for mounting the first arc-extinguishing chamber (25) and separating the first arc-extinguishing chamber from the junction plate.

2. A residual current circuit breaker with an N-pole wiring structure according to claim 1, characterized in that: The housing is provided with a boss (221), and the arc-blocking plate is provided with a positioning hole (220) that cooperates with the boss.

3. A residual current circuit breaker with an N-pole wiring structure according to claim 2, characterized in that: The upper surface of the arc-blocking plate is provided with a positioning groove (222), and the arc-extinguishing chamber includes a first positioning end face (251) and a second positioning end face (252). The first positioning end face is in contact with the inner wall of the positioning groove, and the second positioning end face is disposed opposite to the protrusion.

4. A residual current circuit breaker with an N-pole wiring structure according to claim 1, characterized in that: The L-pole chamber is provided with a boss (26) for limiting the position on one side opposite to the arc-blocking plate.

5. A residual current circuit breaker with an N-pole wiring structure according to claim 1, characterized in that: The bottom end face of the housing is provided with a first air outlet (11) opposite to the first arc-extinguishing chamber.

6. A residual current circuit breaker with an N-pole wiring structure according to claim 1, characterized in that: The housing includes a middle shell (101), a front cover, and a rear cover. An N-polar chamber is formed between the middle shell and the front cover, and an L-polar chamber is formed between the middle shell and the rear cover.

7. A residual current circuit breaker with an N-pole wiring structure according to claim 6, characterized in that: The middle shell has a bend (1011) facing the N-pole chamber, and a second arc-extinguishing chamber (31) is installed in the bend. Part of the second arc-extinguishing chamber is located in the N-pole chamber, and part of the second arc-extinguishing chamber is located in the L-pole chamber.

8. A residual current circuit breaker with an N-pole wiring structure according to claim 7, characterized in that: The side wall of the housing is provided with a second vent (12), which is positioned opposite to the arc-extinguishing chamber located in the N-pole chamber.

9. A residual current circuit breaker with an N-pole wiring structure according to claim 7, characterized in that: The side wall of the housing is provided with a third vent (13), which is arranged opposite to the arc extinguishing chamber located in the L pole chamber.

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