CN213816010U

CN213816010U - Residual current circuit breaker

Info

Publication number: CN213816010U
Application number: CN202023143111.8U
Authority: CN
Inventors: 张泽
Original assignee: Xiaolanshan Electric Appliance Co ltd
Current assignee: Xiaolanshan Electric Appliance Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-07-27
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to a residual current circuit breaker, including base, upper cover, installing support, circuit board subassembly, be used for installing circuit board subassembly's insulating casing, wire, mutual-inductor, pivot and drive assembly, the installing support is installed on the base, the installing support top is arranged in to mutual-inductor and insulating casing, the wire passes the mutual-inductor and places along the axial of mutual-inductor, insulating casing fixed mounting is on the installing support and is radial placing side by side with the mutual-inductor, both sides form the threading mouth that supplies the wire to extend to in the base about the installing support, the pivot is installed in the installing support below and is arranged in the base. The utility model discloses with insulating casing and mutual-inductor along radially placing side by side, insulating casing direct mount is on the installing support to play the oppression effect to the wire for the wire is unlikely to be crushed, and the mutual-inductor can be made bigger size, enlarges the mutual-inductor rated value scope, promotes the security performance.

Description

Residual current circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to residual current circuit breaker.

Background

The leakage circuit breaker is a switch which can automatically act when the leakage current in the circuit exceeds a preset value; common leakage circuit breakers are divided into a voltage type and a current type, and the current type is divided into an electromagnetic type and an electronic type; the earth leakage circuit breaker is used for preventing a person from getting an electric shock, should be selected according to two different requirements of direct contact and indirect contact electric shock protection, and is widely used in daily life, but the existing earth leakage circuit breaker structure is comparatively unified. At present, the insulation shell of the installation circuit board of the traditional residual current circuit breaker is generally arranged above a lead and fixed on an installation bracket through screws, because of the compact structure, the insulation shell has the oppression acting force to the conducting wire, and the conducting wire is pulled along with the moving contact, the pulling damage of the conducting wire can be caused in time, the leakage mutual inductor is damaged, and simultaneously, because the lead needs to pass through the mutual inductor and because the space of the upper cover structure is limited, the mutual inductor can not be made to be too large, so that the mutual inductor can not be made into a large size and can not be additionally provided with a protective shell, the application range of the leakage circuit breaker is limited, and furthermore, because the mounting bracket is provided with the threading opening and the position of the insulating shell is just above the threading opening, the size of the threading opening can only be made small due to space limitation, and still need extend the erection angle just mountable with the insulating casing, long-term the use, the wire is easy to be damaged by pulling in the less space content of threading mouth when being driven by the pivot. Therefore, it is important to develop a residual current circuit breaker capable of protecting the lead and expanding the application range.

Disclosure of Invention

Technical problem to be solved

An object of the utility model is to overcome prior art's defect, provide a rational in infrastructure, application scope wider's electric leakage mutual-inductor.

(II) technical scheme

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a residual current circuit breaker, includes base, upper cover, installing support, circuit board subassembly, is used for installing circuit board subassembly's insulating casing, wire, mutual-inductor, pivot and drive assembly, the installing support is installed on the base, the installing support top is arranged in to mutual-inductor and insulating casing, the wire passes the mutual-inductor and places along the axial of mutual-inductor, insulating casing fixed mounting is on the installing support and is radial side by side with the mutual-inductor and places, both sides form the threading mouth that supplies the wire to extend to in the base about the installing support, the pivot is installed in the installing support below and is arranged in the base. This use is novel to place insulating casing and mutual-inductor along radially juxtaposing, and insulating casing direct mount is on the installing support to play the oppression effect to the wire, make the wire be unlikely to by the crushing, simultaneously because the wire is no longer oppressed, the high position of wire is no longer restricted, so the restriction that highly does not receive the wire height of mutual-inductor, the mutual-inductor can be made bigger size, enlarges mutual-inductor rated value scope, promotes the security performance.

Furthermore, the bottom of the inner cavity of the insulating shell is provided with a mounting hole for mounting on a mounting bracket. Because the position setting of insulating casing is in installing support edge top, consequently can set up the mounting hole in insulating casing inner chamber bottom, need not to extend the installation angle again, saves the length of insulating casing, so can be radial with the mutual-inductor and place side by side. Need set up the mounting hole that is used for installing the insulating casing by the through wires mouth among the prior art, the through wires mouth size is limited, the utility model provides a size of through wires mouth no longer receives this restriction, can make bigger size, can have sufficient space for the wire, is unlikely to be pulled by the through wires mouth because of the pivot drives.

Furthermore, the threading opening comprises a threading inlet and a threading outlet, the base is provided with a thread inlet end and a thread outlet end, the rotating shaft is fixedly provided with a moving contact, the base is internally provided with a static contact, the moving contact is connected with the driving assembly through the rotating shaft to form a linkage structure, one end of the wire is connected with the moving contact through the threading inlet, and the other end of the wire is connected with the thread outlet end through the threading outlet. The wire passes mutual-inductor and one end connection leading-out terminal, and the moving contact is connected to one end, and the static contact is connected with the inlet wire end, and the switching of circuit breaker circuit is controlled with the cooperation of static contact to the moving contact, when the moving contact rotated along with the pivot, when the wire was slightly pulled, because the wire is not oppressed by the insulating casing, so be unlikely to by the wearing and tearing crushing, the insulating properties of protection wire.

Furthermore, the static contact and the wire inlet end are fixedly installed and connected by adopting a terminal piece. The fixed mounting connection is firmer and more reliable.

Furthermore, an insulating plate is padded below the mounting bracket. The general all of its installing support below pad of current residual-current circuit breaker is insulating paper, because insulating paper is damaged easily or wets to influence insulating properties, the utility model discloses a set up the insulation board, improve insulating properties, it is more firm reliable to compare insulating paper, improves product life.

Further, the mutual inductor is ring-shaped and is provided with a protective shell, the mutual inductor is connected with a signal wire, and the signal wire is electrically connected to the circuit board assembly. Because the space for placing the mutual inductor is enough, the mutual inductor can be additionally provided with a protective shell, the insulating property of the mutual inductor is further improved, and the service life of a product is prolonged.

(III) advantageous effects

Compared with the prior art, the utility model, it has following beneficial effect: the utility model discloses a leakage circuit breaker, through placing mutual-inductor and insulating casing along radially side by side, the difficult quilt of wire is damaged by the pressure, improves product insulating properties, and is rational in infrastructure, and application scope is wider.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic external perspective view of a prior art residual current circuit breaker;

fig. 2 is a schematic internal perspective view of a residual current circuit breaker according to the prior art;

fig. 3 is a schematic internal side perspective view of a residual current circuit breaker according to the prior art;

fig. 4 is a schematic diagram of an external three-dimensional structure of a residual current circuit breaker according to the present invention;

fig. 5 is a schematic view of an internal three-dimensional structure of the residual current circuit breaker of the present invention;

fig. 6 is a schematic view of the internal three-dimensional structure inside the base of the residual current circuit breaker of the present invention;

fig. 7 is a schematic view of a three-dimensional structure of a mounting bracket of the leakage breaker of the present invention.

1. The cable connector comprises a base, 11, a wire inlet end, 12, a wire outlet end, 13, a static contact, 2, an upper cover, 3, an installation support, 31, a threading opening, 311, a threading opening, 312, a threading outlet, 4, a circuit board assembly, 5 and an insulating shell; 6. a wire; 7. a transformer; 8. the device comprises a rotating shaft, 81, a movable contact, 9 and a terminal piece.

Detailed Description

As shown in the accompanying drawings, an electrical leakage breaker according to an embodiment of the present invention includes a base 1, an upper cover 2, a mounting bracket 3, a circuit board assembly 4, an insulating casing 5 for mounting the circuit board assembly 4, a wire 6, a transformer 7, a rotating shaft 8, and a driving assembly (the driving assembly is not shown in the drawings of this specification, and the driving assembly may be a handle drive or a motor drive, which does not affect the inventive content of the present invention), wherein the mounting bracket 3 is mounted on the base 1, the transformer 7 and the insulating casing 5 are disposed above the mounting bracket 3, the wire 6 passes through the transformer 7 and is disposed along the axial direction of the transformer 7, the insulating casing 5 is fixedly mounted on the mounting bracket 3 and is disposed in parallel with the transformer 7 in the radial direction, threading openings 31 for the wire 6 to extend into the base 1 are formed at the upper and lower sides of the mounting bracket 3, the rotating shaft 8 is arranged below the mounting bracket 3 and is arranged in the base 1. This use is novel to place insulating casing 5 and mutual-inductor 7 along radially juxtaposing, and insulating casing 5 direct mount is on installing support 3 to do not play the oppression effect to wire 6, make wire 6 be unlikely to be crushed, simultaneously because wire 6 is no longer oppressed, the high position of wire 6 is no longer restricted, so mutual-inductor 7 highly do not receive the restriction of wire 6 height, and bigger size can be made to mutual-inductor 7, enlarges 7 rated value ranges of mutual-inductor, promotes the security performance.

The utility model discloses a further embodiment's a residual current circuit breaker, 5 inner chamber bottoms of insulating casing are provided with and are used for installing the mounting hole on installing support 3. Because the position setting of insulating casing 5 is in installing support 3 edge tops, consequently can be with the mounting hole setting in insulating casing 5 inner chamber bottom, need not to extend the installation angle again, save insulating casing 5's length, so can be radial with mutual-inductor 7 and place side by side. Need set up the mounting hole that is used for installing insulating casing 5 by threading mouth 31 among the prior art, threading mouth 31 size is limited, the utility model provides a threading mouth 31's size no longer receives this restriction, can make bigger size, can have sufficient space for wire 6, is unlikely to be pulled by threading mouth 31 and injures because of pivot 8 drives.

The utility model discloses a further embodiment's a residual current circuit breaker, threading mouth 31 is including advancing threading mouth 311 and going out threading mouth 312, base 1 sets up inlet wire end 11 and leading-out

terminal

12, 8 fixed mounting in pivot have moving contact 81, be provided with static contact 13 in the base 1, moving contact 81 through pivot 8 with drive assembly connects and forms linkage structure, the one end of wire 6 is connected with moving contact 81 through advancing threading mouth 311, and the other end is connected with leading-out terminal 12 through going out threading mouth 312. When the moving contact 81 rotates along with the rotating shaft 8, the wire 6 is slightly pulled, and the wire 6 is not pressed by the insulating shell, so the wire 6 is not damaged by abrasion and pressure, and the insulating property of the wire 6 is protected.

The utility model discloses a further embodiment's an electric leakage circuit breaker, static contact 13 adopts 9 fixed mounting connections of terminal with inlet wire end 11. The fixed mounting mode can be screw mounting, welding or riveting.

The utility model discloses a further embodiment's a residual current circuit breaker, 3 below pads of installing support have the insulation board. The general all of its installing support 3 below pads of current earth leakage circuit breaker is insulating paper, because insulating paper is damaged easily or wets to influence insulating properties, the utility model discloses a set up the insulation board, improve insulating properties, it is more firm reliable to compare insulating paper, improves product life.

The utility model discloses a further embodiment's a residual current circuit breaker, mutual-inductor 7 is ring shape and has the protective housing, mutual-inductor 7 is connected with the signal line, signal line electric connection is in circuit board subassembly 4. Because the space for placing the mutual inductor 7 is enough, the mutual inductor 7 can be additionally provided with a protective shell, the insulating property of the mutual inductor 7 is further improved, and the service life of a product is prolonged.

The utility model discloses a leakage circuit breaker of specific embodiment, through placing mutual-inductor and insulating casing along radially side by side, the difficult quilt of wire improves product insulating properties, and is rational in infrastructure, and application scope is wider.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a residual current circuit breaker, includes base, upper cover, installing support, circuit board subassembly, is used for installing circuit board subassembly's insulating casing, wire, mutual-inductor, pivot and drive assembly, the installing support is installed on the base, its characterized in that: the mutual inductor and the insulating shell are arranged above the mounting bracket, the wire penetrates through the mutual inductor and is arranged along the axial direction of the mutual inductor, the insulating shell is fixedly mounted on the mounting bracket and is arranged in parallel with the mutual inductor in the radial direction, threading openings for the wire to extend into the base are formed in the upper side and the lower side of the mounting bracket, and the rotating shaft is mounted below the mounting bracket and is arranged in the base.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: and a mounting hole for mounting on the mounting bracket is formed in the bottom of the inner cavity of the insulating shell.

3. A residual current circuit breaker as claimed in claim 1, characterized in that: the threading mouth is including threading mouth and play threading mouth, the base sets up inlet wire end and outlet terminal, pivot fixed mounting has the moving contact, be provided with the static contact in the base, the moving contact through the pivot with drive assembly connects and forms linkage structure, the one end of wire is connected with the moving contact through threading mouth in, and the other end is connected with the outlet terminal through going out the threading mouth.

4. A residual current circuit breaker as claimed in claim 3, characterized in that: and the static contact and the wire inlet end are fixedly installed and connected by adopting a terminal piece.

5. A residual current circuit breaker as claimed in claim 1, characterized in that: and an insulating plate is padded below the mounting bracket.

6. A residual current circuit breaker as claimed in claim 1, characterized in that: the mutual inductor is ring-shaped and is provided with a protective shell, the mutual inductor is connected with a signal wire, and the signal wire is electrically connected with the circuit board assembly.