CN220963192U - Leakage circuit breaker - Google Patents

Abstract

The application discloses an electric leakage circuit breaker, which comprises at least two circuit breaker poles, an electric leakage protection pole and a zero sequence transformer module; the circuit breaker electrode and the drain electrode are arranged side by side, and the zero sequence transformer module is arranged on one side of the circuit breaker electrode and one side of the drain electrode; the leakage protection electrode is internally provided with a circuit board, a test assembly and a leakage protection assembly; the lead of the zero sequence transformer module, the lead of the test assembly and the lead of the leakage protection assembly are electrically connected with the circuit board by adopting connectors; the application has the characteristics of convenient lead installation and the like.

Description

Leakage circuit breaker

Technical Field

The application relates to the field of leakage circuit breakers, in particular to a leakage circuit breaker.

Background

The small-sized residual-current circuit breakers are various in forms and can be divided into residual-current circuit breakers with built-in zero-sequence transformers and residual-current circuit breakers with built-out zero-sequence transformers according to different installation modes of the zero-sequence transformers.

For the leakage circuit breaker with the external zero sequence transformer, the zero sequence transformer is assembled on one wiring terminal side of the leakage circuit breaker in a module mode, whether the lead wires led out from the zero sequence transformer or some lead wires inside the leakage circuit breaker are electrically connected with the circuit board inside the leakage circuit breaker in a welding mode, the production process is extremely complex due to the mode of the electric connection, one lead wire is required to be welded on the circuit board, and the mode is adopted by taking CN106024538A as an example.

Therefore, how to realize the convenience of assembly between the lead wire of the residual current circuit breaker and the circuit board is a direction worthy of research.

Disclosure of Invention

Therefore, the application aims to overcome the defects in the prior art, and aims to provide the leakage circuit breaker which can realize the characteristic of convenient assembly of the lead and the circuit board.

The application provides an electric leakage breaker which comprises at least two breaker poles, an electric leakage protection pole and a zero sequence transformer module, wherein the breaker poles are arranged on the upper surface of the zero sequence transformer module; the circuit breaker electrode and the drain electrode are arranged side by side, and the zero sequence transformer module is arranged on one side of the circuit breaker electrode and one side of the drain electrode; the leakage protection electrode is internally provided with a circuit board, a test assembly and a leakage protection assembly; the lead of the zero sequence transformer module, the lead of the test assembly, the lead of the leakage protection assembly and the circuit board are electrically connected by adopting connectors.

In some embodiments of the application, the zero sequence transformer module comprises a shell, wherein at least three corner positions of the shell are provided with inverted hooks, and the zero sequence transformer module is in clamping fit with the circuit breaker electrode and the leakage protection electrode through the inverted hooks; or, the zero sequence transformer module comprises a shell, a positioning column extends towards the direction of the circuit breaker pole, a positioning hole is formed in the circuit breaker pole, and the positioning column extends into the positioning hole to realize positioning fit during installation of the zero sequence transformer module.

In some embodiments of the application, the zero sequence transformer module comprises a shell, wherein the shell extends towards the drain electrode to form a line concentration part, and the line concentration part is provided with a groove structure; the drain electrode is provided with a wiring hole, the line collecting part is inserted into the wiring hole, and a lead of the zero sequence transformer module enters the drain electrode through the groove structure and the wiring hole.

In some embodiments of the application, the circuit breaker is provided with a catch for mounting with the DIN rail; the zero sequence transformer module comprises a shell, a through hole is formed in the position, corresponding to the buckle, of the shell, and the buckle is exposed out of the shell through the through hole.

In some embodiments of the application, the zero sequence transformer module comprises a shell, a baffle and a zero sequence transformer, wherein the shell is provided with a containing space, the containing space comprises a wiring space and an installation space, and the installation space is communicated with the wiring space; the wiring space and the mounting space are both provided with openings on one surface of the shell; the zero sequence transformer is arranged in the installation space, and the baffle is used for shielding the opening of the installation space.

In some embodiments of the application, the installation space is internally provided with main loop perforations with the same number as the poles of the circuit breaker, and the main loop perforations are positioned in the central hole of the zero sequence transformer.

In some embodiments of the application, the baffle is provided with the same number of electricity taking clamping parts and electricity taking sheets as the number of the main loop perforations; the electricity taking sheet is clamped on the electricity taking clamping part and used for being contacted with a wiring terminal of a circuit breaker pole, and an electrical connection is realized between a lead wire of the electricity taking sheet and a circuit board by adopting a connector.

In some embodiments of the present application, the power supply device further includes a routing channel, the routing channel is located above the installation space, and the lead wires of the power supply chip enter the routing space through the routing channel.

In some embodiments of the application, the electricity taking sheet comprises a mounting part and a contact part, wherein the mounting part is connected with the contact part in an included angle, the mounting part is used for being matched with the electricity taking clamping part, the contact part is used for taking electricity, an abutting boss is arranged on the surface of the baffle, which is away from the shell, the part, close to the joint of the mounting part, of the contact part is abutted against the abutting boss, and/or the electricity taking sheet comprises a mounting part and a contact part, the mounting part is connected with the contact part in an included angle, the mounting part is used for being matched with the electricity taking clamping part, the contact part is used for taking electricity, a mounting groove is arranged on the surface of the baffle, which is away from the shell, and the joint of the mounting part and the contact part is positioned in the mounting groove.

In some embodiments of the application, annular protrusions corresponding to the number of the main loop perforations are arranged in the installation space, the annular protrusions are arranged around the main loop perforations, one side of each annular protrusion is provided with a limiting protrusion, and one part of the zero sequence transformer is clamped into the space formed by the annular protrusions and the limiting protrusions; and/or the baffle is provided with an annular convex rib, and the annular convex rib is arranged around all the main loop perforation holes.

Compared with the prior art, the application has the beneficial effects that the application provides the leakage circuit breaker which comprises at least two circuit breaker poles, one leakage protection pole and a zero sequence transformer module; the circuit breaker electrode and the drain electrode are arranged side by side, and the zero sequence transformer module is arranged on one side of the circuit breaker electrode and one side of the drain electrode; the leakage protection electrode is internally provided with a circuit board, a test assembly and a leakage protection assembly; the lead of the zero sequence transformer module, the lead of the test assembly, the lead of the leakage protection assembly and the circuit board are electrically connected by adopting connectors.

By adopting the structure, as the lead of the zero sequence transformer module or the lead in the leakage protection electrode (the lead of the test assembly and the lead of the leakage protection assembly) is provided with the plug-in unit at one end of the lead, only the matched socket is arranged on the circuit board in the leakage circuit breaker, and the plug-in unit and the socket form a connector to be matched, the electric connection of the lead of the zero sequence transformer module, the lead of the test assembly and the lead of the leakage protection assembly and the circuit board can be realized, and the assembly is very convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an earth leakage breaker according to some embodiments of the present application;

fig. 2 illustrates an exploded view of an earth leakage breaker provided by some embodiments of the present application;

FIG. 3 illustrates an internal schematic view of a drain protection electrode provided in some embodiments of the present application;

Fig. 4 is a schematic diagram of a configuration of a zero sequence transformer module according to some embodiments of the present application;

fig. 5 shows a schematic structural diagram of a zero sequence transformer module according to some embodiments of the present application;

Fig. 6 is a schematic structural diagram of another view of a zero sequence transformer module according to some embodiments of the present application;

FIG. 7 illustrates a schematic structural view of a housing provided in some embodiments of the present application;

FIG. 8 illustrates a schematic installation of a housing and zero sequence transformer provided by some embodiments of the present application;

FIG. 9 illustrates a schematic view of a baffle provided in some embodiments of the present application;

fig. 10 is a schematic structural diagram of a baffle and an electricity-taking sheet according to some embodiments of the present application;

Fig. 11 is a schematic structural diagram of a power taking sheet according to some embodiments of the present application.

Description of the embodiments

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples

As shown in fig. 1 to 11, the present application provides an earth leakage breaker comprising two breaker poles P, one earth leakage protection pole B and a zero sequence transformer module.

The breaker pole P is internally provided with an operating mechanism, an instantaneous protection mechanism, an overload protection mechanism, an arc extinguishing mechanism and the like. The specific structures and transmission principles of the operating mechanism, the instantaneous protection mechanism, the overload protection mechanism and the arc extinguishing mechanism are common knowledge in the art, and will not be described herein.

The drain protection electrode B is internally provided with a test component B1 and a drain protection component B2. Taking the test component B1 as an example, it includes a test button and a test spring, one end of a lead of the test component B1 is electrically connected with the test spring, and a specific circuit structure of the test component B1 is common knowledge in the art, which is not described herein again. Taking the earth leakage protection component B2 as an example, it includes a voltage release, a release lever, a reset button, etc., where the voltage release is electrically connected with one end of the lead wire of the earth leakage protection component B2, the specific transmission principle of the earth leakage protection component B2 is common knowledge in the art, and will not be described herein again.

The two breaker poles P and the drain protection electrode B are fixed by rivets.

The zero sequence transformer module is assembled near a wiring terminal P1 on one side of the two breaker poles P and the leakage protection pole B. The zero sequence transformer module comprises a shell 11, a baffle 12 and a zero sequence transformer 13.

The housing 11, the right side surface of which is recessed to form an accommodation space, here the accommodation space includes a wiring space 11c, a mounting space 11a, and a wiring passage 11b. The installation space 11a is used for installing the zero sequence transformer 13, the routing channel 11b is located above the installation space 11a and used for routing the lead wire electrically connected with the electricity taking sheet 121, and the routing space 11c is used for routing the lead wire electrically connected with the zero sequence transformer 13. The wiring channel 11b is separated from the installation space 11a by a separation rib 11d, and the separation rib 11d and the housing 11 are integrally formed.

The reverse hooks 11e are arranged at four corners of the shell 11, the reverse hooks 11e can be used for realizing clamping fit with clamping grooves on the circuit breaker pole P and the drain electrode B, and the reverse hooks 11e can be designed in three ways besides four ways, so long as the shell 11 can be matched with the circuit breaker stably. In addition, in order to facilitate the realization of the clamping connection between the housing 11 and the breaker pole P and the leakage protection pole B, 11l extending towards the direction of the breaker pole P is further arranged on the housing 11, and the breaker pole P is provided with a positioning hole Pl, and the 11l extends into the positioning hole Pl to realize the positioning fit during the installation of the zero sequence transformer module.

The wiring space 11c, the installation space 11a and the wiring channel 11b are provided with openings on the right side surface of the shell 11, the baffle 12 is used for closing the openings of the installation space 11a and the wiring channel 11b, and the baffle 12 is clamped and fixed with the shell 11; of course, other means of screw tightening may be employed.

Two main circuit bores 11f are formed in the installation space 11a, the main circuit bores 11f being located in the central bore of the zero sequence transformer 13. The main circuit through hole 11f is used for passing a multipolar wire connected with the connecting terminal P1 of the circuit breaker, so that the multipolar wire can penetrate into the zero sequence transformer 13, and the zero sequence transformer 13 can detect whether electric leakage exists or not. Naturally, the earth leakage protection circuit breaker of the present embodiment is 2 poles, and of course, the earth leakage protection circuit breaker of 4 poles may be adopted, and the number of corresponding main circuit holes 11f is four.

Two annular projections 11g are formed in the installation space 11a, the two annular projections 11g being each designed around the main circuit bore 11 f. There is spacing protruding 11h also the shaping in accommodation space, and spacing protruding 11h is located annular protruding 11 g's side here, can form the space between annular protruding 11g and the spacing protruding 11h like this, and this space can be used for the joint zero sequence transformer 13 partly, and the installation of cooperation baffle 12 again to guarantee zero sequence transformer 13's stable assembly. The surface of the baffle plate 12 facing the installation space 11a is provided with an annular bead 12d, the annular bead 12d being designed around all the main circuit perforations 11f, in particular the annular bead 12d surrounding all the annular projections 11g.

The bottom surface of the wiring space 11c is provided with a line concentration part 11i, the height of the line concentration part 11i is lower than the height of the two main loop perforations 11f, the line concentration part 11i extends from the bottom surface of the wiring space 11c towards the opening direction of the wiring space, and the line concentration part 11i is provided with a groove-shaped structure 11j, so that the lead wires of the zero-sequence transformer 13 and the lead wires of the electricity taking sheet 121 can be partially positioned in the groove-shaped structure 11j and led out by the groove-shaped structure 11j, and the collection of all the lead wires inside the zero-sequence transformer module is facilitated. In order to ensure that all the leads of the zero sequence transformer module more easily enter the drain electrode B, a wiring hole Bi is formed in the drain electrode B, the wiring hole Bi is matched with the wiring part 11i, the wiring part 11i can penetrate into the wiring hole Bi, and all the leads of the zero sequence transformer module enter the drain electrode B through the groove structure 11j and the wiring hole Bi.

Two electricity taking pieces 121 are arranged on the baffle 12 in a clamping manner, and the number of the electricity taking pieces 121 corresponds to the number of the main loop through holes 11 f. Specifically, the baffle 12 is provided with a power-taking clamping part above the two main loop through holes 11f, and the power-taking sheet 121 is stably assembled on the power-taking clamping part through clamping. In the present embodiment, the power-taking clamping portion is two hook portions 12a disposed opposite to each other, and the power-taking sheet 121 has two elastic bending portions 121c approaching to each other, and the two elastic bending portions 121c are clamped into the two hook portions 12a to form a clamping connection, so as to ensure stable assembly. In the present embodiment, the power take-off sheet 121 has a substantially L-shape and includes a mounting portion 121a and a contact portion 121b, and the mounting portion 121a and the contact portion 121b are connected at 90 °, although other angles such as 45 °, 55 °, 65 °, 75 °, 85 °, 105 °, 95 °, 115 °, 135 ° and the like may be adopted, as long as the angles are within the range of 45 ° to 135 °. Two abutting bosses 12b are arranged on the surface, facing away from the shell 11, of the baffle 12, the abutting bosses 12b are located below the power taking clamping connection parts, the contact parts 121b are abutted to the abutting bosses 12b, specifically, the parts, close to the connection parts with the mounting parts 121a, of the contact parts 121b are abutted to the abutting bosses 12b, the mounting parts 121a are attached to the surface, facing away from the shell 11, of the baffle 12, the elastic bending parts 121c are arranged on the mounting parts 121a, and the contact parts 121b extend towards the direction where the circuit breaker is located and are used for contacting with the wiring terminals P2 of the circuit breaker to take power. A mounting groove 12c is provided at a position of the baffle plate 12 where the abutment boss 12b is located, and a portion of the junction of the mounting portion 121a and the contact portion 121b is located in the mounting groove 12 c.

In order to facilitate the wiring between all the leads and the circuit board in the circuit breaker, whether all the leads in the zero sequence transformer or all the leads in the leakage protection electrode B (the leads of the test assembly B1 and the leads of the leakage protection assembly B2), the ends of the leads are provided with the plug-in units 4, so that the plug-in connection with the circuit board in the leakage protection stage can be realized through the plug-in units 4, and the installation efficiency can be greatly improved.

In order to facilitate the cooperation of such an earth leakage breaker with a DIN rail, a buckle Pz for mounting with the DIN rail is provided on the breaker pole P, a via hole 11z is provided at a position corresponding to the housing, and the buckle Pz is partially exposed outside the housing through the via hole 11z for operation.

The design concept of the present application can be applied to a four-pole earth leakage breaker, in addition to the two-pole earth leakage breaker exemplified above.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. The leakage circuit breaker comprises at least two circuit breaker poles, one leakage protection pole and a zero sequence transformer module; the circuit breaker electrode and the drain electrode are arranged side by side, and the zero sequence transformer module is arranged on one side of the circuit breaker electrode and one side of the drain electrode; the leakage protection electrode is internally provided with a circuit board, a test assembly and a leakage protection assembly; the method is characterized in that: and the lead of the zero sequence transformer module, the lead of the test assembly and the lead of the leakage protection assembly are electrically connected with the circuit board by adopting connectors.

2. The earth leakage breaker according to claim 1, characterized in that: the zero sequence transformer module comprises a shell, wherein at least three corner positions of the shell are provided with barbs, and the zero sequence transformer module is in clamping fit with the circuit breaker electrode and the leakage protection electrode through the barbs; and/or the zero sequence transformer module comprises a shell, a positioning column extends towards the direction of the circuit breaker pole, a positioning hole is formed in the circuit breaker pole, and the positioning column extends into the positioning hole to realize positioning fit during installation of the zero sequence transformer module.

3. The earth leakage breaker according to claim 1, characterized in that: the zero sequence transformer module comprises a shell, a line concentration part extends towards the drain electrode direction from the shell, and a groove structure is arranged on the line concentration part; the drain electrode is provided with a wiring hole, the line collecting part is inserted into the wiring hole, and a lead of the zero sequence transformer module enters the drain electrode through the groove structure and the wiring hole.

4. The earth leakage breaker according to claim 1, characterized in that: the circuit breaker is provided with a buckle for being installed with the DIN guide rail; the zero sequence transformer module comprises a shell, a through hole is formed in the position, corresponding to the buckle, of the shell, and the buckle is exposed out of the shell through the through hole.

5. The earth leakage breaker according to claim 1, characterized in that: the zero sequence transformer module comprises a shell, a baffle and a zero sequence transformer, wherein an accommodating space is formed in the shell, the accommodating space comprises a wiring space and an installation space, and the installation space is communicated with the wiring space; the wiring space and the mounting space are both provided with openings on one surface of the shell; the zero sequence transformer is arranged in the installation space, and the baffle is used for shielding the opening of the installation space.

6. The earth leakage breaker according to claim 5, wherein: the installation space is internally provided with main loop perforations with the same number as the poles of the circuit breaker, and the main loop perforations are positioned in the center hole of the zero sequence transformer.

7. The earth leakage breaker according to claim 6, wherein: the baffle is provided with electricity taking clamping parts the same as the main circuit perforations in number and electricity taking sheets; the electricity taking sheet is clamped on the electricity taking clamping part and used for being contacted with a wiring terminal of a circuit breaker pole, and an electrical connection is realized between a lead wire of the electricity taking sheet and a circuit board by adopting a connector.

8. The earth leakage breaker according to claim 7, wherein: the electric power supply device further comprises a wiring channel, wherein the wiring channel is positioned above the installation space, and a lead wire of the electric power supply piece enters the wiring space through the wiring channel.

9. The earth leakage breaker according to claim 8, wherein: the electricity taking sheet comprises a mounting part and a contact part, wherein the mounting part is connected with the contact part in an included angle, the mounting part is used for being matched with the electricity taking clamping part, the contact part is used for taking electricity, a butt boss is arranged on the surface of the baffle, which faces away from the shell, the contact part is close to the part, which is connected with the mounting part, of the contact part, and is butt-jointed on the butt boss, and/or the electricity taking sheet comprises the mounting part and the contact part, the mounting part is connected with the contact part in an included angle, the mounting part is used for being matched with the electricity taking clamping part, the contact part is used for taking electricity, a mounting groove is arranged on the surface of the baffle, which faces away from the shell, and the joint of the mounting part and the contact part is located in the mounting groove.

10. The earth leakage breaker according to claim 6, wherein: annular bulges corresponding to the number of the main loop perforations are arranged in the installation space, the annular bulges are arranged around the main loop perforations, one side of each annular bulge is provided with a limiting bulge, and one part of the zero sequence transformer is clamped into the space formed by the annular bulge and the limiting bulge; and/or the baffle is provided with an annular convex rib, and the annular convex rib is arranged around all the main loop perforation holes.