Circuit breaker

Abstract

The invention discloses a circuit breaker, and the circuit breaker comprises a housing which is provided with a front surface and a first side wall, the first side wall is located at one side of the front surface and is perpendicular to the front surface, and the front surface is used for facing a user; a main loop conductor disposed in the housing; the circuit board assembly is arranged in the shell; the control assembly is electrically connected between the main loop conductor and the circuit board assembly and is provided with a disconnectable movable contact and a disconnectable static contact; the control assembly is arranged in the first side wall and comprises a control piece, and at least part of the control piece is exposed on the surface of the first side wall and is movably arranged relative to the first side wall; the operating piece is linked with the movable contact piece, and the operating piece is driven along a first direction to separate the movable contact piece from the static contact piece so as to cut off the connection between the circuit board assembly and the main loop conductor; the operating part is driven in the second direction to enable the movable contact part to be in contact with the static contact part, and electrical connection is formed between the circuit board assembly and the main loop conductor; the method has the characteristic of preventing operation.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and in particular to a circuit breaker. Background Art

[0002] Among molded case circuit breakers, there are often some circuit breakers with circuit boards, such as reclosing circuit breakers, electronic molded case circuit breakers, leakage molded case circuit breakers and the Internet of Things fusion switches that have been more common in recent years.

[0003] These circuit breakers often rely on circuit board components to perform some of their protection functions.

[0004] For this type of circuit breaker with a circuit board assembly, the circuit board assembly often needs to draw power from the main circuit (that is, draw power from the circuit to be protected by the circuit breaker. The common way to draw power is to connect the power line to the input and output terminals). When the circuit breaker leaves the factory or arrives at the user's end, the user or the circuit breaker manufacturer needs to perform some functional tests. For example, the withstand voltage test requires a very high voltage to be passed through the main circuit of the circuit breaker. Before these functional tests, the connection between the circuit board assembly and the main circuit conductor (such as the input and output terminals) needs to be cut off, otherwise this high voltage is enough to directly destroy the circuit board assembly. The common way to cut off is to remove the circuit board, but obviously this method cannot be operated at the user's end.

[0005] Based on this, technicians in this field have also designed a method of controlling the power on and off of the circuit board assembly through an additional switch. The operating knob of this type of switch is set on the top surface of the molded case circuit breaker (that is, the surface where the circuit breaker handle is located) for user operation.

[0006] This method can indeed achieve power-off of the circuit board assembly when the circuit board assembly is removed. However, since the operating knob of the switch is set on the top surface of the molded case circuit breaker, there is a possibility of misoperation or accidental contact by uninformed personnel, which will cause accidental power-off of the circuit board assembly and loss of the protection function of the circuit breaker. Therefore, there is still a safety hazard.

[0007] Therefore, how to reasonably design a circuit breaker that can cut off the power supply to the circuit board assembly without removing the cover, and can also prevent the circuit breaker from being misoperated or accidentally touched, is a direction worthy of research. Summary of the invention

[0008] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a circuit breaker.

[0009] The present application provides: a circuit breaker, comprising: - a housing, comprising a front face and a first side wall, wherein the first side wall is located on one side of the front face and is arranged perpendicular to the front face, and the front face is used to face the user; - a main circuit conductor, arranged in the housing; -a circuit board assembly, arranged in the housing; - A control component, electrically connected between the main circuit conductor and the circuit board component, and having separable moving and static contacts; the control component is arranged inside the first side wall, and the control component includes an operating member, the operating member is at least partially exposed on the surface of the first side wall and is movably arranged relative to the first side wall; the operating member and the moving contact are arranged in linkage, and the operating member is driven in a first direction to separate the moving contact from the static contact to cut off the connection between the circuit board component and the main circuit conductor; the operating member is driven in a second direction to make the moving contact contact with the static contact, thereby promoting an electrical connection between the circuit board component and the main circuit conductor.

[0010] In some embodiments of the present application, the control component includes a first plug-in and a second plug-in that are adapted to each other, the second plug-in is a static contact, and the first plug-in is a dynamic contact; among the main circuit conductor and the circuit board component, the first plug-in is electrically connected to one of them, and the second plug-in is electrically connected to the other; the first plug-in is slidably arranged, and the sliding direction of the first plug-in is perpendicular to the front; under the drive of the operating member, the first plug-in and the second plug-in form a mating and unmating connection to achieve contact and separation between the dynamic contact and the static contact.

[0011] In some embodiments of the present application, a third plug-in is further included, and the third plug-in cooperates with the first plug-in. During the sliding process of the first plug-in, one end of the first plug-in is always in contact with the third plug-in. Among the main circuit conductor and the circuit board assembly, the first plug-in forms the above-mentioned electrical connection with one of them through the third plug-in.

[0012] In some embodiments of the present application, the first plug-in unit forms the above-mentioned electrical connection with one of the main loop conductor and the circuit board assembly through a flexible wire.

[0013] In some embodiments of the present application, the shell includes a base and a first shell, the base includes a bottom surface and a first sub-side wall, the first shell is arranged above the base, the first shell includes a second sub-side wall, and the first sub-side wall and the second sub-side wall are both part of the first side wall; the first sub-side wall and the second sub-side wall are provided with a receiving groove, and the first plug-in and the second plug-in are located in the receiving groove; the first side wall also includes a cover, which is detachably fixed to the first sub-side wall and / or the second sub-side wall, and the cover is used to cover the opening of the receiving groove, and the cover has a through hole, and at least part of the operating member is exposed through the through hole.

[0014] In some embodiments of the present application, a mounting groove and a sliding cavity are formed on the surface of the cover facing the receiving groove, the first plug-in is slidably arranged in the sliding cavity, and the second plug-in is clamped in the mounting groove; the first plug-in and the second plug-in are both installed on the cover to be in the receiving groove.

[0015] In some embodiments of the present application, the operating member is a push button, which is fixed on the moving contact member or the push button and the moving contact member are integrated; a through hole is opened on the first side wall, and the push button is exposed on the first side wall through the through hole; the first hole wall and / or the second hole wall of the through hole is an elastic arm, the elastic arm is located on one side of the push button and is at least partially bent toward the push button, and the push button is attached to the elastic arm during sliding; the push button has a first position and a second position, the first position corresponds to the position where the moving and static contacts are in contact, and the second position corresponds to the position where the moving and static contacts are completely separated, there is a critical point position between the elastic arm and the push button, and the critical point position is between the first position and the second position; before the push button slides to the critical point position, the elastic arm is squeezed and deformed by the push button, and has a damping effect on the sliding of the push button; after the push button slides across the critical point position, the elastic arm resumes its deformation, and has an acceleration effect on the sliding of the push button.

[0016] In some embodiments of the present application, the circuit board assembly is arranged in a first shell, and the main circuit conductor is arranged in the base; a wiring groove is arranged on the bottom surface of the base, and the wiring groove is connected to the receiving groove; a first wire is arranged in the wiring groove, one end of the first wire is electrically connected to the main circuit conductor, and the other end extends into the receiving groove to be electrically connected to the corresponding plug-in.

[0017] In some embodiments of the present application, a third plug-in is further included, and the third plug-in and the second plug-in are arranged on both sides of the sliding direction of the first plug-in; the second plug-in is electrically connected to the main circuit conductor through the first wire; the third plug-in is electrically connected to the circuit board assembly, and during the sliding process of the first plug-in, one end of the first plug-in is always in contact with the third plug-in to achieve electrical connection between the first plug-in and the circuit board assembly.

[0018] In some embodiments of the present application, the first plug-in is a pin header, and the second plug-in is a socket; the pin header has a long plug portion and a short plug portion, and the short plug portion of the pin header is used to form or release the plug-in with the socket.

[0019] In some embodiments of the present application, the operating member and the movable contact member are fixed or the operating member and the movable contact member are an integral part, and both the operating member and the movable contact member are slidingly arranged, and the sliding direction is perpendicular to the front side.

[0020] In some embodiments of the present application, the operating member is rotatably arranged, and the movable contact member is slidably arranged. The operating member and the movable contact member form a crank slider mechanism, and the sliding direction of the movable contact member is perpendicular to the front side.

[0021] The beneficial effects of the present invention include: The control assembly provided by the present invention is arranged on the first side wall, that is, on the side of the circuit breaker, not on the front of the circuit breaker. After the circuit breaker is installed, it is generally in the power distribution cabinet, and the front of the circuit breaker faces the user, so the user is not likely to accidentally touch or misoperate the operating member, thereby avoiding accidental power failure of the circuit board assembly due to these situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. Figure 1 A three-dimensional diagram of a circuit breaker according to Embodiment 1 of the present application is shown; Figure 2 A schematic diagram of the circuit breaker without the control component in Embodiment 1 of the present application is shown; Figure 3 An exploded view of the cover, the first plug-in, and the second plug-in in Example 1 of the present application is shown; Figure 4 A schematic diagram of the first plug-in in Example 1 of the present application is shown; Figure 5 A schematic diagram showing a push button in a second position in an implementation manner of a control assembly in Example 1 of the present application is shown; Figure 6 A schematic diagram showing a push button in a first position in an implementation manner of a control assembly in Example 1 of the present application is shown; Figure 7 A position relationship diagram of all plug-ins when a push button in an implementation mode of a control assembly in Example 1 of the present application is in a first position is shown; Figure 8 A position relationship diagram of all plug-ins when a push button in an implementation mode of a control assembly in Example 1 of the present application is in the second position is shown; Fig. 9 A schematic diagram showing a push button in a critical point position in an implementation manner of a control component in Example 1 of the present application is shown; Fig.10 A schematic diagram of a main loop conductor in a control assembly in Example 1 of the present application is shown; Fig.11 A schematic diagram of a first housing and a circuit board assembly in Embodiment 1 of the present application is shown; Fig.12 A schematic diagram showing the bottom surface of the base, the wiring trough and the first wire in Example 1 of the present application is shown; Fig.13 A schematic diagram showing another embodiment of the control assembly in Example 1 of the present application when the moving and static contacts are in contact; Fig.14 A schematic diagram showing another embodiment of the control assembly in Example 1 of the present application after the moving and static contacts are separated; Fig.15 A schematic diagram showing the connection between the first plug-in in the control component and the circuit board component using a soft connection in Example 1 of the present application is shown. DETAILED DESCRIPTION

[0023] The embodiments of the present application 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, when a main feature is “above” or “below” a second feature, it can mean that the main feature and the second feature are in direct contact, or the main feature and the second feature are in indirect contact through an intermediate medium. Moreover, when a main feature is “above”, “above” or “above” a second feature, it can mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. When a main feature is “below”, “below” or “below” a second feature, it can mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is lower in level than the second feature. Example

[0028] like Figure 1-Figure 15 As shown, embodiment 1 of the present application provides a circuit breaker. This type of circuit breaker has a feature that it has a circuit board assembly 300, and uses the circuit board assembly 300 to implement the corresponding protection function. For example, an electronic molded case circuit breaker uses the circuit board assembly 300 to implement overload protection and short circuit protection. Another example is a leakage electronic molded case circuit breaker, which uses the circuit board assembly 300 to implement leakage protection, overload protection and short circuit protection. Another example is a reclosing circuit breaker, which uses the circuit board assembly 300 to achieve automatic opening and closing, overload protection and short circuit protection. Another example is an Internet of Things fusion switch, which uses a circuit board assembly to achieve metering function, leakage protection function, overload protection, short circuit protection, etc. (such as a fusion switch with electric operation, it also has an automatic opening and closing function).

[0029] The following is a detailed introduction to the power-on and power-off structure of the circuit board assembly 300. The circuit breaker includes: The housing 100 is a hexahedral three-dimensional structure, which at least includes a front surface 101 and a first side wall 102. The front surface 101 faces the user, and the first side wall 102 is located on one side of the front surface 101. The first side wall 102 and the front surface 101 are vertically arranged.

[0030] In this embodiment, the housing 100 includes a base 110, a first housing 120 and a second housing 130. The first housing 120 is equivalent to a middle cover, and the second housing 130 is equivalent to an upper cover. The middle cover is fixed on the base 110, and the upper cover is fixed on the middle cover. The front face 101 here is on the upper cover, and the first side wall 102 is formed by the middle cover and the base 110. As shown in the figure, the first side wall 102 is the left side of the circuit breaker. Of course, in addition to this, for some circuit breakers that only have an upper cover and a base 110, its upper cover is the first housing 120, and it does not have a second housing 130. The upper cover and the base 110 are directly fixed. In this case, the first side wall 102 is formed by the upper cover and the base 110.

[0031] The main circuit conductor 200 is arranged in the housing 100, specifically in the base 110. The main circuit conductor 200 here is not a complete conductor, but is composed of multiple parts, such as a first terminal board 201, a flexible connection, a moving contact, a static contact and a second terminal board 202. The first terminal board 201 is connected to the moving contact through a flexible connection, and the static contact is fixed on the second terminal board 202. The contact between the moving and static contacts realizes the connection of the main circuit conductor 200, and the separation of the moving and static contacts realizes the disconnection of the main circuit conductor 200. In the present application, the position where the circuit board assembly 300 draws power from the main circuit conductor 200 is on the first terminal board 201 and the second terminal board 202 (described in detail later).

[0032] The circuit board assembly 300 is arranged in the housing 100. In this embodiment, the circuit board assembly 300 is arranged in the middle cover. Specifically, the middle cover has a placement cavity 121, the circuit board assembly 300 is arranged in the placement cavity 121, and the upper cover closes the upper opening of the placement cavity 121. Of course, the circuit board assembly 300 is not limited to being arranged in the middle cover; for example, a part of it can be arranged between the base 110 and the middle cover, and a part of it can be arranged between the middle cover and the upper cover; for example, for a circuit breaker with only an upper cover and a base 110, the circuit board assembly 300 is arranged between the upper cover and the base 110.

[0033] The control assembly 400 is electrically connected between the main circuit conductor 200 and the circuit board assembly 300. It has an operating member 401 and separable moving and static contacts 402 and 403. The operating member 401 and the moving contact 402 are arranged in linkage. Here, the control assembly 400 is the electrical connection bridge between the main circuit conductor 200 and the circuit board assembly 300; when the moving contact 402 and the static contact 403 are in contact, the two are connected, and the circuit board assembly 300 can draw electricity from the main circuit conductor 200; when the moving contact 402 and the static contact 403 are separated, the two are disconnected, and the circuit board assembly 300 cannot draw electricity from the main circuit conductor 200. The control assembly 400 here is located inside the first side wall 102, and only a part of the operating member 401 is exposed on the surface of the first side wall 102 for user operation. When the user drives the operating member 401 in the first direction, the movable contact 402 and the stationary contact 403 are separated to cut off the connection between the circuit board assembly 300 and the main circuit conductor 200. When the user drives the operating member 401 in the second direction, the movable contact 402 and the stationary contact 403 are brought into contact to form an electrical connection between the circuit board assembly 300 and the main circuit conductor 200. The first direction and the second direction are two opposite directions.

[0034] With such an arrangement, the control assembly 400 is arranged inside the first side wall 102, that is, on the side of the circuit breaker, not on the front 101 of the circuit breaker. Since the circuit breaker is generally in a power distribution cabinet after installation, and the front 101 of the circuit breaker faces the user, it is not easy for the user to accidentally touch or misoperate the control member 401, thereby avoiding accidental power failure of the circuit board assembly 300 due to these situations.

[0035] As for the setting form of the operating member 401, it can be slidably set relative to the first side wall 102, or it can be rotatably set relative to the first side wall 102.

[0036] by Figure 13-14 For example, in this manner, the operating member 401 is rotatably disposed on the first side wall 102, and the movable contact member 402 is slidably disposed, and the sliding direction of the movable contact member 402 is perpendicular to the front surface 101. The operating member 401 and the movable contact member 402 form a crank slider mechanism, and when the user rotates the operating member 401, the operating member 401 can drive the movable contact member 402 to slide to achieve contact and separation with the static contact member 403. For example, when the operating member 401 rotates in a clockwise direction, the movable contact member 402 and the static contact member 403 can be connected; when the operating member 401 rotates in a counterclockwise direction, the movable contact member 402 and the static contact member 403 can be separated. Such a structure saves operating space, and the user's hand only needs to rotate the operating member 401 at a fixed position during operation.

[0037] by Figure 3-8 For example, in this manner, the operating member 401 is slidably disposed on the first side wall 102, and the moving contact member 402 is also slidably disposed. The operating member 401 and the moving contact member 402 are fixed or the operating member 401 and the moving contact member 402 are integrated, and the sliding directions of the operating member 401 and the moving contact member 402 are perpendicular to the front surface 101. When the user drives the operating member 401 to slide, the operating member 401 can drive the moving contact member 402 to slide to achieve contact and separation with the static contact member 403. For example, when the operating member 401 slides in the direction toward the user, the moving contact member 402 and the static contact member 403 can be separated; when the operating member 401 slides in the reverse direction, the moving contact member 402 and the static contact member 403 can be connected. With such a structure, the linkage structure between the operating member 401 and the moving contact member 402 is relatively simple, which is conducive to assembly.

[0038] When the operating member 401 is in a sliding manner, the elastic structure can also assist the movement of the operating member 401 .

[0039] Specifically, the operating member 401 is a push button 401', and the push button 401' is fixed on the moving contact member 402 or the push button 401' and the moving contact member 402 are integrated. Therefore, the push button 401' has a first position S1 and a second position S2, the first position S1 corresponds to the position where the moving and static contacts 402 and 403 are in contact, and the second position S2 corresponds to the position where the moving and static contacts 402 and 403 are completely separated. Here, a through hole 500 is opened on the first side wall 102, and the push button 401' is exposed on the first side wall 102 through the through hole 500. Here, the through hole 500 includes a first hole wall and a second hole wall, and the push button 401' is located between the first hole wall and the second hole wall. During the sliding process (the sliding direction is consistent with the moving contact member 402), the push button 401' slides along the first hole wall and the second hole wall. Here, the first hole wall and the second hole wall are both elastic arms 501, and are partially bent toward the push button 401', so that the push button 401' pushes the elastic arm 501 to deform when sliding, and there is a critical point position S3 between the elastic arm 501 and the push button 401'. Before the push button 401' slides to the critical point position S3, the elastic arm 501 is squeezed and deformed by the push button 401', and a damping effect is presented to the sliding of the push button 401'. After the push button 401' slides over the critical point position S3, the elastic arm 501 resumes its deformation, and an acceleration effect is presented to the sliding of the push button 401'. Of course, the acceleration effect and the damping effect here exist both in the process of moving from the first position S1 to the second position S2, and in the process of moving from the second position S2 to the first position S1.

[0040] Of course, only one of the elastic arm 501 can be provided, for example, one of the first hole wall or the second hole wall is the elastic arm 501. The elastic arm 501 here can be installed in the first side wall 102 using a spring sheet, or the elastic arm 501 and the first side wall 102 can be integrated (plastic part) as shown in the figure and formed during the injection molding process.

[0041] Through such elastic arm 501, push button 401' and critical point position S3, the damping effect can be used to prevent the user from slightly accidentally touching the push button 401'. For example, when the user's accidental touch force is not enough to push the push button 401' beyond the critical point position S3, the push button 401' can be restored to its original position under the action of the elastic arm 501. At the same time, the movement of the push button 401' can be accelerated by the acceleration effect. For example, when the user actually wants to operate the push button 401', once the push button 401' exceeds the critical point position S3, the elastic arm 501 will produce an acceleration effect on the push button 401'.

[0042] Regardless of which type of operating member 401 is used, it can adopt the following connector-type movable contact 402 and stationary contact 403.

[0043] The movable contact 402 and the stationary contact 403 of this connector form include a first plug-in 402' and a second plug-in 403'. Here, the first plug-in 402' is the movable contact 402, and the second plug-in 403' is the stationary contact 403. The first plug-in 402' is arranged to slide, and the sliding direction of the first plug-in 402' is perpendicular to the front surface 101. In this embodiment, the first plug-in 402' is electrically connected to the circuit board assembly 300, and the second plug-in 403' is electrically connected to the main circuit conductor 200. With such a structure, under the drive of the operating member 401, the first plug-in 402' slides to achieve the formation of plug-in and release of plug-in with the second plug-in 403', so as to achieve the contact and separation of the movable contact 402 and the stationary contact 403. Of course, as an alternative, the first plug-in 402' can also be changed to maintain electrical connection with the main circuit conductor 200, and the second plug-in 403' is electrically connected to the main circuit conductor 200.

[0044] The movable contact 402 and the stationary contact 403 in the form of a connector are relatively simple in configuration and are very easy to assemble. The connector can basically be purchased from the market, thus reducing the complexity of the design of the control component 400.

[0045] There are many ways to achieve the above electrical connection, which can be achieved by using a flexible wire connection or by using a third plug-in 404'.

[0046] Take the form of the third plug-in 404' as an example, Figure 7-8 As shown, the third plug-in 404' is electrically connected to the circuit board assembly 300 (for example, it is welded on the circuit board assembly 300 or connected through a soft wire). During the sliding process of the first plug-in 402', one end of the first plug-in 402' is always in contact with the third plug-in 404', that is, no matter what the state of the first plug-in 402' and the second plug-in 403' is, the first plug-in 402' and the third plug-in 404' are always electrically connected. This kind of electrical connection formed by the third plug-in 404', because the structures of several plug-ins are relatively simple and the state of the movement trajectory is predictable, the movement space of the first plug-in 402' can be set more compact (unlike the electrical connection in the form of soft wires, it is necessary to reserve a lot of space for the soft wires to avoid the soft wires hindering the movement of the first plug-in 402').

[0047] Of course, in an alternative solution, since the first plug-in 402 ′ is electrically connected to the main circuit conductor 200 , a third plug-in 404 ′ may also be used to implement the solution, which will not be described in detail here.

[0048] Take the method of connecting with soft wire as an example. Fig.15As shown, one end of the first plug-in 402' is connected to the circuit board assembly 300 by a soft wire, and the other end of the first plug-in 402' is used to form and release the plug-in with the second plug-in 403'. This kind of electrical connection formed by the soft wire has relatively fewer parts and is more cost-effective.

[0049] Of course, in an alternative solution, since the first plug-in 402 ′ and the main circuit conductor 200 are in electrical connection, a soft wire connection can also be used, which will not be described in detail here.

[0050] Regardless of the connector form of the movable contact 402 and the stationary contact 403 , they are specifically arranged on the housing 100 in the following manner.

[0051] The first side wall 102 includes a first sub-side wall 112, a second sub-side wall 122, and a cover 50. The first sub-side wall 112 is a side wall of the base 110, and the second sub-side wall 122 is a part of the first housing 120. The first sub-side wall 112 and the second sub-side wall 122 form a receiving groove 102a, and the cover 50 is fixed to the first sub-side wall 112 and the second sub-side wall 122 in a detachable manner.

[0052] The first plug-in 402' and the second plug-in 403' are located in the receiving groove 102a, and the through hole 500 for exposing the operating part is provided on the cover 50 (the solution including the elastic arm 501 is also provided on the cover 50). The detachable fixing method here is fixed by plugging, that is, the cover 50 is inserted into place along the slots of the first sub-side wall 112 and the second sub-side wall 122. Of course, there are many other detachable methods, such as snap-on or screw fastening, which will not be described here. Of course, the detachable fixing method here can also be only coordinated with the first sub-side wall 112 or the second sub-side wall 122.

[0053] In this way, the first sub-side wall 112, the second sub-side wall 122 and the cover 50 together form the first side wall 102. For the movable and stationary contacts 402, 403 in the form of connectors, such a structure is more conducive to assembly.

[0054] Of course, the first plug-in 402 ′ and the second plug-in 403 ′ here can be directly disposed in the receiving groove 102 a , or can be installed in the receiving groove 102 a through the cover 50 .

[0055] For example, the cover 50 is provided and then installed in the receiving groove 102a. Figure 3As shown, a mounting groove 50a and a sliding cavity 50b are formed on the side of the cover 50 facing the receiving groove 102a, and the side is the side facing the receiving groove 102a. The first plug-in 402' is set in the sliding cavity 50b in a sliding manner, and the second plug-in 403' is fixed in the mounting groove 50a. Here, the second plug-in 403' is fixed in the mounting groove 50a in a snap-fit ​​manner. Of course, the second plug-in 403' can also be fixed in other ways, such as interference fit, screw fastening, etc. In this way, the user can first match the first plug-in 402', the second plug-in 403' with the cover 50, and then match the cover 50 with the first sub-side wall 112 and the second sub-side wall 122 to complete the installation. This assembly method is very simple and convenient, and is very conducive to the wiring of the first and second plug-ins 403'.

[0056] The bottom surface of the base 110 is provided with a wiring groove 111, and the wiring groove 111 is connected to the receiving groove 102a. Here, a power outlet 113 is provided on the bottom surface of the base 110, and the power outlet 113 corresponds to the first terminal board 201 or the second terminal board 202. There is a first wire 114 in the wiring groove 111, one end of the first wire 114 is located at the power outlet 113 and is connected to the corresponding terminal board (the first terminal board 201 or the second terminal board 202) by screws, and the other end is connected to the wiring part of the second plug-in 403'. The first plug-in 402' is electrically connected to the circuit board assembly 300 (including the third plug-in 404' form and the soft wire form). Here, in the connection scheme between the first plug-in 402' and the main circuit conductor 200, one end of the first wire 114 is connected to the corresponding terminal board by screws, and the other end is connected to the first plug-in 402'.

[0057] Such a design of the wiring groove 111 and the receiving groove 102a will be beneficial to the design of the power supply structure, and the wiring between the first wire 114 and the corresponding plug-in is also very convenient.

[0058] As for the way in which the second plug 403' is connected to the first wire 114, when the third plug 404' is provided, the third plug 404' and the second plug 403' are provided on both sides of the sliding direction of the first plug 402'. The third plug 404' is electrically connected to the circuit board assembly 300 (directly welded to the circuit board assembly 300, or connected via a soft wire). During the sliding process of the first plug 402', one end of the first plug 402' is always in contact with the third plug 404', so that the first plug 402' and the circuit board assembly 300 are electrically connected.

[0059] For the first plug 402', it adopts a pin header, and the second plug 403' and the third plug 404' are both sockets. The pin header has a long plug part 4021 and a short plug part 4022. The short plug part 4022 of the pin header is used to cooperate with the second plug 403' to form a mating or release mating; the long plug part 4021 is used to cooperate with the third plug 404' to maintain electrical connection.

[0060] Of course, the method of using the pin header in the first plug-in 402' is not only applicable to the case where the second plug-in 403' and the third plug-in 404' exist, but also applicable to the case where only the second plug-in 403' exists.

[0061] Of course, although the above example shows that the first plug-in 402' adopts a pin row and the second plug-in 403' adopts a socket, the two can also be switched, that is, the first plug-in 402' adopts a socket and the second plug-in 403' adopts a pin row (even in the case of a third plug-in 404', the same is applicable, for example, the first plug-in 402' adopts a socket, both ends of the socket have jacks, and the second plug-in 403' and the third plug-in 404' both have pin rows, and the pin rows are always in contact with the jack at one end of the socket).

[0062] The above structure is not only applicable to two-pole circuit breakers, but also applicable to three-pole and four-pole circuit breakers. The only difference is the number of main circuit conductors 200 and the number of first wires 114 .

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A circuit breaker, characterized in that: include, - a housing, comprising a front face and a first side wall, wherein the first side wall is located on one side of the front face and is arranged perpendicular to the front face, and the front face is used to face the user; - a main circuit conductor, arranged in the housing; -a circuit board assembly, arranged in the housing; - a control assembly, electrically connected between the main circuit conductor and the circuit board assembly, and having separable moving and static contacts; the control assembly is arranged inside the first side wall, and the control assembly includes an operating member, the operating member is at least partially exposed on the surface of the first side wall and is movably arranged relative to the first side wall; the operating member is arranged in linkage with the moving contact member, and the operating member is driven in a first direction to separate the moving contact member from the static contact member, so as to cut off the connection between the circuit board assembly and the main circuit conductor; The operating member is driven along the second direction to make the moving contact member contact with the stationary contact member, thereby forming an electrical connection between the circuit board assembly and the main loop conductor.

2. A circuit breaker according to claim 1, characterized in that: The control component includes a first plug-in and a second plug-in that are adapted to each other, the second plug-in is a static contact, and the first plug-in is a dynamic contact; the first plug-in is electrically connected to one of the main circuit conductor and the circuit board component, and the second plug-in is electrically connected to the other; the first plug-in is slidably arranged, and the sliding direction of the first plug-in is perpendicular to the front; under the drive of the operating member, the first plug-in and the second plug-in are mated and unmated to achieve contact and separation between the dynamic contact and the static contact.

3. A circuit breaker according to claim 2, characterized in that: Among the main circuit conductor and the circuit board assembly, the first plug-in is electrically connected to one of them through the third plug-in, and one end of the first plug-in is always in contact with the third plug-in during the sliding process of the first plug-in; Alternatively, the first plug-in unit forms the above-mentioned electrical connection with one of the main circuit conductor and the circuit board assembly through a flexible wire.

4. A circuit breaker according to claim 2, characterized in that: The housing includes a base and a first housing, the base includes a bottom surface and a first sub-side wall, the first housing is arranged above the base, the first housing includes a second sub-side wall, and the first sub-side wall and the second sub-side wall are both part of the first side wall; the first sub-side wall and the second sub-side wall are provided with a receiving groove, and the first plug-in and the second plug-in are located in the receiving groove; The first side wall also includes a cover, which is detachably fixed to the first sub-side wall and / or the second sub-side wall, and is used to cover the opening of the receiving groove. The cover has a through hole, and at least a part of the operating member is exposed through the through hole.

5. A circuit breaker according to claim 4, characterized in that: The cover has an installation groove and a sliding cavity formed on the surface facing the receiving groove. The first plug-in is slidably arranged in the sliding cavity, and the second plug-in is clamped in the installation groove. Both the first plug-in and the second plug-in are installed on the cover to be in the receiving groove.

6. A circuit breaker according to claim 4, characterized in that: The circuit board assembly is arranged in the first shell, and the main circuit conductor is arranged in the base; a wiring groove is arranged on the bottom surface of the base, and the wiring groove is connected with the receiving groove; a first wire is arranged in the wiring groove, one end of the first wire is electrically connected to the main circuit conductor, and the other end extends into the receiving groove and is electrically connected to the corresponding plug-in.

7. A circuit breaker according to claim 6, characterized in that: It also includes a third plug-in, which is arranged on both sides of the sliding direction of the first plug-in with the second plug-in; the second plug-in is electrically connected to the main circuit conductor through the first wire; the third plug-in is electrically connected to the circuit board assembly, and during the sliding process of the first plug-in, one end of the first plug-in is always in contact with the third plug-in to achieve electrical connection between the first plug-in and the circuit board assembly.

8. A circuit breaker according to claim 2, characterized in that: The first plug-in is a pin header, and the second plug-in is a socket; the pin header has a long plug portion and a short plug portion, and the short plug portion of the pin header is used to form a mating connection with the socket or to release the mating connection.

9. A circuit breaker according to claim 1, characterized in that: The operating member is a push button, which is fixed on the moving contact member or the push button and the moving contact member are integrated; a through hole is opened on the first side wall, and the push button is exposed on the first side wall through the through hole; the first hole wall and / or the second hole wall of the through hole are elastic arms, the elastic arm is located on one side of the push button and is at least partially bent toward the push button, and the push button is attached to the elastic arm during the sliding process; the push button has a first position and a second position, the first position corresponds to the position where the moving and static contacts are in contact, and the second position corresponds to the position where the moving and static contacts are completely separated, there is a critical point position between the elastic arm and the push button, and the critical point position is between the first position and the second position; before the push button slides to the critical point position, the elastic arm is squeezed and deformed by the push button, and has a damping effect on the sliding of the push button; After the push button slides past the critical point, the elastic arm recovers its deformation, which accelerates the sliding of the push button.

10. A circuit breaker according to claim 1, characterized in that: The operating member and the movable contact member are fixed or the operating member and the movable contact member are integrated, and both the operating member and the movable contact member are slidingly arranged, and the sliding direction is perpendicular to the front side; Alternatively, the operating member is rotatably arranged, and the movable contact member is slidably arranged, the operating member and the movable contact member form a crank slider mechanism, and the sliding direction of the movable contact member is perpendicular to the front side.

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