CN220341142U - Shell assembly and circuit breaker - Google Patents

Abstract

The application provides a housing assembly and circuit breaker belongs to electrical equipment technical field. The housing assembly includes a base and a divider. The base comprises a mutual inductor chamber and a plurality of contact mechanism chambers, the contact mechanism chambers are arranged side by side along a first direction, the contact mechanism chambers and the mutual inductor chamber are arranged along a second direction, and the first direction is perpendicular to the second direction. A divider is mounted to the base between the plurality of contact mechanism chambers and the transformer chamber to divide the plurality of contact mechanism chambers and the transformer chamber. Through the technical scheme of the application, the possibility that the conductive particles are stuck on each phase of conductive piece in the transformer cavity and the conductive particles with different polarities are contacted with each other to generate short circuit can be effectively reduced.

Description

Shell assembly and circuit breaker

Technical Field

The application relates to the technical field of electrical equipment, in particular to a shell assembly and a circuit breaker.

Background

Circuit breakers are important switching devices in electrical power facilities that are capable of closing, carrying and opening the current in a circuit. When faults such as electric leakage, overload, short circuit and the like occur in the system, the circuit breaker can cut off the circuit through opening the gate so as to prevent the faults from expanding.

The circuit breaker includes a housing assembly having a contact mechanism mounted within a contact mechanism chamber of the housing assembly. When the moving contact and the fixed contact in the contact mechanism are separated, conductive particles such as carbon powder, metal particles and the like can be generated. When the conductive particles in the different contact mechanism chambers move from the contact mechanism chambers to other positions in the housing assembly, the conductive particles of different polarities may contact each other, creating a short circuit problem, thereby affecting the normal use of the circuit breaker.

Disclosure of Invention

In view of the above, embodiments of the present application provide a housing assembly and a circuit breaker, which can effectively reduce the possibility that conductive particles of different polarities are stuck to each phase of conductive member in a transformer chamber and contact each other to cause short circuit.

In a first aspect of embodiments of the present application, a housing assembly is provided that includes a base and a divider. The base comprises a mutual inductor chamber and a plurality of contact mechanism chambers, the contact mechanism chambers are arranged side by side along a first direction, the contact mechanism chambers and the mutual inductor chamber are arranged along a second direction, and the first direction is perpendicular to the second direction. A divider is mounted to the base between the plurality of contact mechanism chambers and the transformer chamber to divide the plurality of contact mechanism chambers and the transformer chamber.

Through the scheme, when the movable contact and the fixed contact in the multiple contact mechanism cavities are separated, conductive particles generated, when the conductive particles move to the separating piece, one part of the conductive particles possibly collide with the separating piece and fall off, and the other part of the conductive particles possibly collide with the separating piece and change the moving direction, so that the conductive particles are difficult to bypass the separating piece and enter the transformer cavity. Therefore, the possibility that the conductive particles with different polarities are contacted with each other to generate short circuit can be effectively reduced because the conductive particles are adhered to the conductive pieces of each phase in the transformer cavity. In addition, under the condition that the conductive particles with different polarities are not contacted with each other, short circuit can not occur between different phases, so that the reverse wire inlet function of the circuit breaker is conveniently realized.

In some embodiments, the base includes first and second opposing sidewalls. The partition member is of a unitary structure, one side of the partition member in the first direction is in contact with the first side wall, and the other side of the partition member in the first direction is in contact with the second side wall.

By the scheme, gaps are not reserved between the first side wall and the second side wall and the partition piece. Thus, the conductive particles generated when the movable contact and the fixed contact in the contact mechanism chamber close to the first side wall are separated are not easy to bypass between the partition piece and the first side wall and enter the transformer chamber, and the conductive particles generated when the movable contact and the fixed contact in the contact mechanism chamber close to the second side wall are separated are not easy to bypass between the partition piece and the second side wall and enter the transformer chamber, so that the possibility that the conductive particles are adhered to all the conductive pieces in the transformer chamber and the conductive particles with different polarities are contacted with each other to generate short circuit can be reduced.

In some embodiments, the divider includes a fixed wall and a first divider aligned in a first direction, the fixed wall being coupled to the base, and a first divider being coupled between adjacent fixed walls.

Through above-mentioned scheme, when the installation, can be with fixed wall and first baffle separately installation, be convenient for reduce the installation degree of difficulty of separator in the base.

In some embodiments, the housing assembly further comprises a middle cover that covers the base. One side of the fixed wall facing the middle cover is contacted with the middle cover; and/or the side of the first partition plate facing the middle cover is in contact with the middle cover.

Through the scheme, no gap exists between the fixed wall and the middle cover, and/or between the first partition board and the middle cover, so that conductive particles generated when the moving contact and the fixed contact in the contact mechanism cavity are separated are not easy to enter the transformer cavity from between the fixed wall and the middle cover, and/or from between the first partition board and the middle cover, the possibility that the conductive particles are adhered to all the conductive pieces with different polarities in the transformer cavity and are contacted with each other to generate a short circuit can be reduced.

In some embodiments, the fixed wall includes a first wall and a second wall aligned in the second direction, a mounting groove is formed between the first wall and the second wall, and the first partition is mounted to the mounting groove.

Through the scheme, when the conductive particles in the cavity of the contact mechanism move to the fixed wall or the first partition board, the conductive particles need to enter a gap between the fixed wall and the first partition board, and then bypass the part of the first partition board positioned in the mounting groove, so that the conductive particles can enter the transformer cavity. Therefore, the cooperation of the first baffle and the mounting groove can prolong the path of the conductive particles moving to the transformer chamber from the first baffle to the mounting groove, and the difficulty of the conductive particles entering the transformer chamber from the contact mechanism chamber is increased, so that the possibility that the conductive particles are stuck on all phases of conductive pieces in the transformer chamber and the conductive particles with different polarities are contacted with each other to generate short circuit can be effectively reduced.

In some embodiments, the side of the first wall facing the middle cap is different from the side of the second wall facing the middle cap in a position in the third direction. Wherein the third direction is perpendicular to the first direction and the second direction.

Through the scheme, the first wall and the second wall are arranged in a staggered mode towards one side of the middle cover, so that the path that conductive particles move from the contact mechanism chamber to the transformer chamber can be prolonged, the difficulty that the conductive particles enter the transformer chamber from the contact mechanism chamber is increased, and the possibility that the conductive particles are adhered to all the conductive pieces in the transformer chamber and the conductive particles with different polarities are contacted with each other to generate short circuit can be effectively reduced.

In some embodiments, a first via is disposed between the first partition and the middle cover, or a first via is disposed between the first partition and the base, the first via being for a phase conductive member of the circuit breaker to pass through.

Through the scheme, the conductive particles in the cavity of the contact mechanism are prevented from entering the transformer cavity through the first partition plate, and meanwhile the conductive pieces of each phase of the circuit breaker can conveniently pass through the corresponding first through holes. In addition, the first through hole can limit the phase conductive element, so that the possibility of shaking the phase conductive element during installation or normal use is reduced.

In some embodiments, the circuit breaker further comprises a leakage release, the partition further comprises a second partition connected to the fixed wall and/or the first partition, the side of the second partition facing the middle cover is used for supporting a lead of the leakage release. One side of the second partition plate facing the middle cover is different from the first through hole in the position in the third direction, and the third direction is perpendicular to the first direction and the second direction.

Through the scheme, the lead wire of the electric leakage release and the phase conductive piece can be supported at different heights of the partition piece in the third direction, so that the lead wire of the electric leakage release is not easy to wind with the phase conductive piece, and the possibility of mutual interference between the lead wire of the electric leakage release and the phase conductive piece is reduced.

In some embodiments, a second via is provided between the second separator and the middle cover, through which the lead of the leakage release passes.

Through the scheme, the lead of the leakage release can be limited, the possibility of shaking the lead during installation or normal use is reduced, and the possibility of interference between the lead and the phase conductive piece and between the lead and other structural parts can be further reduced.

In a second aspect of embodiments of the present application, a circuit breaker is provided that includes the housing assembly of the first aspect.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a combination structure of a base and a partition in a housing assembly according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a combined structure of a housing assembly according to an embodiment of the present application.

Fig. 3 is a cross-sectional view taken along section A-A of fig. 2.

Fig. 4 is a schematic structural diagram of a middle cover according to an embodiment of the present application.

Fig. 5 is an enlarged view of a portion B in fig. 1.

Fig. 6 is a schematic structural diagram of a first separator according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a second separator according to an embodiment of the present application.

Fig. 8 is a cross-sectional view taken along section C-C of fig. 2.

Reference numerals illustrate:

1. a housing assembly; 11. a base; 111. a first sidewall; 112. a second sidewall; 12. a partition; 121. a fixed wall; 1211. a first wall; 1212. a second wall; c1, a mounting groove; 122. a first separator; k1, a first via hole; c2, a screw abdication groove; 123. a second separator; k2, a second via hole; J. chamfering obliquely; 13. a phase separator; 14. a middle cover; 141. a compacting structure; q1, a transformer chamber; q2, a contact mechanism chamber; x, a first direction; y, second direction; z, third direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the drawings are intended to cover a non-exclusive inclusion.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The directional terms appearing in the following description are all directions shown in the drawings and are not limiting to the specific structure of the housing assembly and circuit breaker of the present application. For example, in the description of the present application, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, expressions such as X-direction, Y-direction for explaining the directions of indication of the operation and construction of the respective members of the case assembly and the circuit breaker of the present embodiment are not absolute but relative, and although these indications are appropriate when the respective members of the case assembly and the circuit breaker are in the positions shown in the drawings, these directions should be interpreted differently when these positions are changed to correspond to the changes.

Furthermore, the terms first, second and the like in the description and in the claims of the present application or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to expressly or implicitly include one or more such features.

In the description of the present application, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., the physical connection may be a fixed connection, e.g., by a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The leakage circuit breaker is used as a switch, and can rapidly cut off the power supply circuit when the leakage current in the power supply circuit exceeds a preset value so as to avoid dangerous situations such as human body electric shock, equipment leakage and the like.

The leakage breaker comprises a base, a contact mechanism and a zero sequence current transformer (short for transformer). A contact mechanism cavity and a transformer cavity are arranged in the base, the contact mechanism cavity is used for installing a contact mechanism, and the transformer cavity is used for installing a transformer. The contact mechanism comprises a pair of moving contacts and a fixed contact, and the pair of moving contacts and the fixed contact correspond to a conductive loop. The phase conductive members of the plurality of conductive loops pass through the holes of the transformer and are connected to corresponding connection terminals.

The transformer chamber has a limited space such that the size of the aperture of the transformer located within the transformer chamber is limited. When the phase conductors of the plurality of conductive loops pass through the aperture of the transformer, the phase conductors are spaced relatively closely apart.

In the related art, the contact mechanism chamber and the transformer chamber are communicated. Conductive particles such as carbon powder and metal particles generated when the movable contact and the fixed contact in the contact mechanism chamber are separated can move from the contact mechanism chamber to the transformer chamber and are adhered to the conductive pieces of each phase. When the conductive particles stuck on the conductive members of each phase are gathered to some extent, the conductive particles of different polarities may contact each other, resulting in occurrence of a short circuit condition. Once a short circuit occurs in the circuit breaker, the normal use of the circuit breaker is affected.

In view of this, embodiments of the present application provide a housing assembly and circuit breaker that provide a divider between a plurality of contact mechanism chambers and a transformer chamber to divide the plurality of contact mechanism chambers and the transformer chamber.

In order to better understand the technical solutions of the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a combination structure of a base 11 and a partition 12 in a housing assembly 1 according to an embodiment of the present application, where the housing assembly 1 is applied to a circuit breaker. As shown in fig. 1, the housing assembly 1 includes a base 11 and a partition 12. The base 11 includes a transformer chamber Q1 and a plurality of contact mechanism chambers Q2. The contact mechanism chambers Q2 are arranged side by side along a first direction X, and the contact mechanism chambers Q2 and the transformer chamber Q1 are arranged along a second direction Y, wherein the first direction X is perpendicular to the second direction Y. A partition 12 is mounted to the base 11, the partition 12 being located between the plurality of contact mechanism chambers Q2 and the transformer chamber Q1 to partition the plurality of contact mechanism chambers Q2 and the transformer chamber Q1.

The first direction X and the second direction Y may be arbitrary directions. Illustratively, the first direction X may be a width direction of the circuit breaker and the second direction Y may be a length direction of the circuit breaker. Taking the placement orientation of the housing assembly 1 shown in fig. 1 as an example, the width direction of the circuit breaker may be the left-right direction of the paper surface, and the length direction of the circuit breaker may be the up-down direction of the paper surface.

The contact mechanism chamber Q2 is used for mounting a contact mechanism therein, and one contact mechanism is mounted in one contact mechanism chamber Q2. Different contact mechanism cavities Q2 correspond to different phases of the circuit breaker, and a phase separation plate 13 is arranged between two adjacent contact mechanism cavities Q2 so that the different contact mechanism cavities Q2 are mutually isolated, and conductive particles generated when a moving contact and a fixed contact in the different contact mechanism cavities Q2 are separated cannot be mutually communicated between the different contact mechanism cavities Q2.

The transformer chamber Q1 is used for installing a transformer. The phase conductors of each conductive loop extend from the corresponding contact mechanism chamber Q2 to the transformer chamber Q1 and pass through the transformer aperture.

The separator 12 may be substantially plate-shaped. The separator 12 may be made of a material that is resistant to high temperatures and is insulating. For example, the separator 12 may be made of an epoxy material.

The plate-like separator 12 includes two plate surfaces opposite to each other, and the separator 12 may be vertically installed in the base 11 such that one plate surface of the separator 12 faces the plurality of contact mechanism chambers Q2 and the other plate surface faces the transformer chamber Q1, thereby allowing the separator 12 to have a large area to block conductive particles of the plurality of contact mechanism chambers Q2 from entering the transformer chamber Q1.

The partition 12 may be disposed in the base 11 in parallel to the first direction X or may be slightly inclined with respect to the first direction X as long as it is capable of separating the plurality of contact mechanism chambers Q2 and the transformer chamber Q1, which is not limited in the embodiment of the present application.

The partition 12 may be fixedly connected to the base 11, for example, the partition 12 may be integrally formed with the base 11. The partition 12 may also be detachably connected to the base 11, wherein the detachable connection may be a snap connection or a screw connection, etc.

In this embodiment, the partition 12 is disposed between the plurality of contact mechanism chambers Q2 and the transformer chamber Q1, and the conductive particles generated when the moving contact and the fixed contact in the plurality of contact mechanism chambers Q2 are separated may collide with the partition 12 and fall down when moving to the partition 12, and may collide with the partition 12 to change the moving direction.

Whether the conductive particles that collide with the partition 12 fall or change the direction of movement, it is difficult to bypass the partition 12 and enter the transformer chamber Q1. Therefore, it is possible to effectively reduce the possibility that the conductive particles of different polarities are in contact with each other to cause a short circuit by sticking the conductive particles to the respective phase conductive members in the transformer chamber Q1. As can be seen, the divider 12 in this application effectively separates the plurality of contact mechanism chambers Q2 from the transformer chamber Q1.

In addition, in the case where conductive particles of different polarities do not contact each other, a short circuit does not occur between different phases. Therefore, when the wire inlet end of the circuit breaker is used as a wire outlet end and the wire outlet end of the circuit breaker is used as a wire inlet end, the circuit breaker cannot work normally because different phases are short-circuited. That is, the technical scheme of the application is beneficial to realizing the reverse wire feeding function of the circuit breaker.

Possible configurations of the separator 12 will be described in detail below with reference to the accompanying drawings.

In some embodiments, as shown in fig. 1, the base 11 includes first and second opposing side walls 111, 112. The separator 12 may be a unitary structure, with one side of the separator 12 in the first direction X being in contact with the first sidewall 111 and the other side of the separator 12 in the first direction X being in contact with the second sidewall 112.

The divider 12 is a unitary structure and it is understood that the divider 12 is integrally formed.

The arrangement direction of the first side wall 111 and the second side wall 112 of the base 11 substantially coincides with the first direction X. The dimension of the separator 12 in the first direction X may be substantially equal to the spacing of the first and second sidewalls 111 and 112 such that one side of the separator 12 in the first direction X may be in contact with the first sidewall 111 while the other side of the separator 12 in the first direction X may be in contact with the second sidewall 112.

Fig. 1 shows a structure of a four-pole circuit breaker, and as shown in fig. 1, a base 11 of the four-pole circuit breaker includes four contact mechanism chambers Q2. Assuming that the four contact mechanism chambers Q2 are named a-phase, B-phase, C-phase and N-phase chambers along the first direction X, the first sidewall 111 may be the sidewall of the a-phase chamber and the second sidewall 112 may be the sidewall of the N-phase chamber.

Taking the four-pole circuit breaker shown in fig. 1 as an example, one side of the partition 12 in the first direction X is in contact with the first side wall 111, i.e., one side of the partition 12 in the first direction X is in contact with the side wall of the a-phase chamber. The other side of the partition 12 in the first direction X is in contact with the second sidewall 112, i.e., the other side of the partition 12 in the first direction X is in contact with the sidewall of the N-phase chamber.

In the present embodiment, one side of the separator 12 in the first direction X is brought into contact with the first side wall 111 such that there is no gap between the separator 12 and the first side wall 111. In this way, the conductive particles generated when the moving contact and the fixed contact in the contact mechanism chamber Q2 close to the first side wall 111 are separated are not easy to bypass between the partition 12 and the first side wall 111 and enter the transformer chamber Q1, so that the possibility that the conductive particles are stuck to each phase of conductive pieces in the transformer chamber Q1 and the conductive particles with different polarities are contacted with each other to generate a short circuit can be reduced.

Similarly, the other side of the separator 12 in the first direction X is in contact with the second side wall 112, so that there is no gap between the separator 12 and the second side wall 112, and thus, the conductive particles generated when the moving contact and the fixed contact in the contact mechanism chamber Q2 close to the second side wall 112 are separated are not easy to bypass between the separator 12 and the second side wall 112 and enter the transformer chamber Q1, and the possibility that the conductive particles are adhered to the conductive pieces of each phase in the transformer chamber Q1 and the conductive particles of different polarities are in contact with each other to cause short circuit can be reduced.

In other embodiments, the divider 12 may also be formed separately. Illustratively, as shown in fig. 1, the partition 12 may include a fixing wall 121 and a first partition 122 aligned in the first direction X, the fixing wall 121 being connected to the base 11, and one first partition 122 being connected between adjacent two fixing walls 121.

The number of the fixing walls 121 and the first partition 122 may be plural, and the fixing walls 121 and the first partition 122 may be disposed at intervals.

Based on the foregoing, the phase separator 13 is provided between the adjacent two contact mechanism chambers Q2, and in this embodiment, the side of the fixing wall 121 facing the base 11 may be connected to the base 11, and the side of the fixing wall 121 facing the phase separator 13 may be connected to the phase separator 13, so that there is no gap between the fixing wall 121 and the base 11, and there is no gap between the fixing wall 121 and the phase separator 13. In this way, the possibility of conductive particles of the contact mechanism chamber Q2 entering the transformer chamber Q1 from between the fixed wall 121 and the base 11, and from between the fixed wall 121 and the phase separator 13, can be reduced.

As shown in fig. 1, one fixed wall 121 may correspond to two adjacent contact mechanism chambers Q2, and one first partition 122 may correspond to one contact mechanism chamber Q2. Fig. 1 illustrates only one arrangement of the fixing wall 121 and the first partition 122, but is not limited to this embodiment, as long as the fixing wall 121 and the first partition 122 can separate the plurality of contact mechanism chambers Q2 and the transformer chamber Q1 after being connected.

The connection between the fixed wall 121 and the base 11, and between the fixed wall 121 and the phase separator 13, may be fixed or removable. The connection between the first partition 122 and the fixed wall 121 may be a detachable link. Wherein, the fixed connection can be integrated into one piece etc., and the detachable connection can be buckle connection, grafting or screw connection etc.

In this embodiment, the partition 12 includes the fixing wall 121 and the first partition 122, and when the partition is installed, the fixing wall 121 and the first partition 122 can be installed separately, so that the difficulty in installing the partition 12 in the base 11 can be reduced.

Fig. 2 is a schematic view of a combined structure of the housing assembly 1 according to the embodiment of the present application, and fig. 3 is a cross-sectional view taken along A-A in fig. 2, and as shown in fig. 2 and 3, the housing assembly 1 further includes a middle cover 14 that covers the base 11. In some embodiments, as shown in fig. 3, a side of the fixing wall 121 facing the middle cap 14 may be in contact with the middle cap 14.

By the arrangement, no gap exists between the fixed wall 121 and the middle cover 14, so that conductive particles generated when the movable contact and the fixed contact in the contact mechanism chamber Q2 are separated are not easy to bypass between the fixed wall 121 and the middle cover 14 and enter the transformer chamber Q1, and the possibility that the conductive particles are stuck to all the conductive pieces in the transformer chamber Q1 and the conductive particles with different polarities are contacted with each other to generate short circuit can be reduced.

Similarly, in some embodiments, with continued reference to fig. 3, a side of the first partition 122 facing the middle cap 14 may be in contact with the middle cap 14.

By the arrangement, no gap exists between the first partition plate 122 and the middle cover 14, so that conductive particles generated when the movable contact and the fixed contact in the contact mechanism cavity Q2 are separated are not easy to bypass between the first partition plate 122 and the middle cover 14 and enter the transformer cavity Q1, and the possibility that the conductive particles are adhered to all the conductive pieces in each phase in the transformer cavity Q1, and the conductive particles with different polarities are contacted with each other to cause short circuit can be reduced.

Note that, in the present application, only the side of the fixing wall 121 facing the middle cap 14 may be in contact with the middle cap 14, only the side of the first partition 122 facing the middle cap 14 may be in contact with the middle cap 14, and the side of the fixing wall 121 facing the middle cap 14 may be in contact with the middle cap 14, and the side of the first partition 122 facing the middle cap 14 may be in contact with the middle cap 14 at the same time. However, in order to ensure that the partition 12 has a superior partition effect, not only the side of the fixing wall 121 facing the middle cap 14 may be in contact with the middle cap 14, but also the side of the first partition 122 facing the middle cap 14 may be in contact with the middle cap 14.

Fig. 4 is a schematic structural view of a middle cover 14 according to an embodiment of the present application, and in some embodiments, as shown in fig. 4, a side of the middle cover 14 facing the base 11 may be provided with a pressing structure 141. The pressing structure 141 may have a substantially plate-like structure, and the middle cover 14 may be pressed together with the base 11 by the pressing structure 141 to press the partition 12 provided on the base 11, so that the fixing wall 121 may be brought into contact with the middle cover 14 on the side facing the middle cover 14, and the first partition 122 may be brought into contact with the middle cover 14 on the side facing the middle cover 14.

Fig. 5 is an enlarged view of a portion B of fig. 1, and in some embodiments, as shown in fig. 5, the fixing wall 121 may include a first wall 1211 and a second wall 1212 aligned in the second direction Y, a mounting groove C1 is formed between the first wall 1211 and the second wall 1212, and the first partition 122 is mounted to the mounting groove C1.

The shape of the first wall 1211 and the second wall 1212 may be the same or different. The first wall 1211 and/or the second wall 1212 may be a regular plate-like structure or an irregular plate-like structure. The first wall 1211 and the second wall 1212 may be attached to each other, and a gap may be provided between the first wall 1211 and the second wall 1212, which is not limited in the embodiment of the present application.

In the case where the first wall 1211 and the second wall 1212 are attached to each other, a side of the first wall 1211 facing the second wall 1212 may be provided with a groove, and/or a side of the second wall 1212 facing the first wall 1211 may be provided with a groove, and the mounting groove C1 may be configured as the groove.

In the case where the first wall 1211 and the second wall 1212 have a gap, the mounting groove C1 may be configured as the gap between the first wall 1211 and the second wall 1212.

Taking the two adjacent fixing walls 121 in fig. 5 as an example, the two fixing arms each include a first wall 1211 and a second wall 1212, and a first partition 122 is disposed between the two fixing walls 121. Assuming that a first installation groove C1 is formed between the first wall 1211 and the second wall 1212 of the first fixing wall 121 and a second installation groove C1 is formed between the first wall 1211 and the second wall 1212 of the second fixing wall 121, the first partition 122 is inserted into the first installation groove C1 at a position close to the first fixing wall 121, and the first partition 122 is inserted into the second installation groove C1 at a position close to the second fixing wall 121. In this way, the first partition plate 122 can be mounted in the mounting groove C1.

In this embodiment, the first partition 122 is installed in the installation groove C1 formed between the first wall 1211 and the second wall 1212, and when the conductive particles in the contact mechanism chamber Q2 move to the fixed wall 121 or the first partition 122, the conductive particles need to enter the gap between the fixed wall 121 and the first partition 122, and then bypass the portion of the first partition 122 located in the installation groove C1, so as to enter the transformer chamber Q1.

Therefore, the cooperation of the first partition 122 and the installation groove C1 can prolong the path of the conductive particles moving from the first partition 122 to the transformer chamber Q1 and increase the difficulty of the conductive particles entering the transformer chamber Q1 from the contact mechanism chamber Q2, so that the possibility of short circuit caused by contact of the conductive particles with different polarities on the conductive pieces of each phase in the transformer chamber Q1 can be effectively reduced.

Further, the side of the first wall 1211 facing the middle cap 14 and the side of the second wall 1212 facing the middle cap 14 may be located at different positions in the third direction Z. Wherein the third direction Z is perpendicular to the first direction X and the second direction Y.

Taking the placement orientation of the housing assembly 1 shown in fig. 2 as an example, the third direction Z may be the height direction of the circuit breaker, or may be the closing direction of the base 11 and the middle cover 14.

Assuming that a plane in which the side of the first wall 1211 facing the middle cap 14 is defined as a first plane and a plane in which the side of the second wall 1212 facing the middle cap 14 is defined as a second plane, the side of the first wall 1211 facing the middle cap 14 is different from the side of the second wall 1212 facing the middle cap 14 in the third direction Z, it is understood that the first plane is located higher than the second plane in the third direction Z, or the first plane is located lower than the second plane in the third direction Z.

When the conductive particles in the contact mechanism chamber Q2 move to the fixed wall 121, the conductive particles need to pass between one of the first wall 1211 and the second wall 1212 facing the contact mechanism chamber Q2 and the middle cover 14, and pass between one of the first wall 1211 and the second wall 1212 far from the contact mechanism chamber Q2 and the middle cover 14, and then possibly enter the transformer chamber Q1, regardless of whether the first plane is located higher or lower than the second plane.

Therefore, the first wall 1211 and the second wall 1212 are arranged in a staggered manner towards one side of the middle cover 14, so that the path of the conductive particles moving from the contact mechanism chamber Q2 to the transformer chamber Q1 can be prolonged, the difficulty of the conductive particles entering the transformer chamber Q1 from the contact mechanism chamber Q2 is increased, and the possibility that the conductive particles are adhered to the conductive pieces of each phase in the transformer chamber Q1 and the conductive particles with different polarities are contacted with each other to cause short circuit can be effectively reduced.

The present application may set the position of the first partition plate 122 between the first wall 1211 and the second wall 1212 in the third direction Z differently from the position of the first wall 1211 facing the middle cover 14 and the second wall 1212 facing the middle cover 14 on the basis of the installation groove C1. The mounting groove C1 in which the first partition 122 is mounted between the first wall 1211 and the second wall 1212, and the side of the first wall 1211 facing the middle cover 14 and the side of the second wall 1212 facing the middle cover 14 are located at different positions in the third direction Z, may be independent, and do not affect each other, and the embodiment of the present application is not limited thereto.

One end of each phase conductive element is electrically connected with a thermal element in the contact mechanism chamber Q2, and the other end of each phase conductive element needs to pass through a hole of the transformer and then be electrically connected with a corresponding wiring terminal. Based on this, in some embodiments, as shown in fig. 3 and 6, a first via K1 may be provided between the first partition 122 and the middle cap 14, or a first via K1 may be provided between the first partition 122 and the base 11, the first via K1 being for passing a phase conductive member of the circuit breaker.

When the circuit breaker includes N phases, in order to reduce mutual interference between the phase conductive members of the three phases a, B, and C and the phase conductive members of the N phases, or in other consideration, a first via K1 corresponding to the N phase may be provided between the first barrier 122 and the base 11, and a first via K1 corresponding to the three phases a, B, and C may be provided between the first barrier 122 and the middle cap 14.

Taking the example that the first via K1 is disposed between the first partition 122 and the middle cover 14, the first via K1 may be a U-shaped through hole disposed on a side of the first partition 122 facing the middle cover 14, or a through hole with another shape, or a through hole disposed on a side of the middle cover 14 facing the first partition 122, or a combination of a through hole disposed on a side of the first partition 122 facing the middle cover 14, and a through hole disposed on a side of the middle cover 14 facing the first partition 122, which is not limited in this embodiment of the present application.

A first via K1 is provided between the first partition 122 corresponding to each contact mechanism chamber Q2 and the middle cap 14 such that each contact mechanism chamber Q2 has a first via K1 opposite thereto, so that the end of the phase conductor protruding from the contact mechanism chamber Q2 can protrude into the transformer chamber Q1 through the corresponding first via K1.

The structure of the first via K1 when the first via K1 is disposed between the first partition 122 and the base 11 may be described with reference to the structure of the first via K1 when the first via K1 is disposed between the first partition 122 and the middle cap 14, which will not be described herein.

In this embodiment, the first via K1 is disposed between the first partition 122 and the middle cover 14, so that the conductive particles in the contact mechanism chamber Q2 are prevented from entering the transformer chamber Q1 by the first partition 122, and the conductive pieces of each phase of the circuit breaker can pass through the corresponding first via K1 conveniently. In addition, the first through hole K1 can limit the phase conductive element, so that the possibility of shaking the phase conductive element during installation or normal use is reduced.

As shown in fig. 3, the first partition 122 may be in contact with the middle cap 14 on the side facing the middle cap 14 except for the portion where the first via K1 is provided. In this way, the possibility of conductive particles entering the transformer chamber Q1 from between the first partition 122 and the middle cover 14 can be reduced.

The thermal element in the contact mechanism chamber Q2 is connected to the bottom wall of the base 11 by means of a screw, the end of which, after the thermal element is mounted on the base 11, is exposed on the side of the bottom wall of the base 11 facing the middle cover 14, preventing the internal space of the circuit breaker from being limited, which may be located exactly between the first partition 122 and the bottom wall of the base 11.

Based on this, in some embodiments, as shown in fig. 3 and 6, a side of the first partition 122 facing the bottom wall of the base 11, and/or a side of the bottom wall of the base 11 facing the first partition 122, may be provided with screw giving grooves C2. Thus, after the thermal element is secured to the bottom wall of the base 11 by the screw, the screw can be positioned just inside the screw relief groove C2 when the first partition 122 is installed, without the first partition 122 being held against the first partition 122. Accordingly, the provision of the screw escape groove C2 can reduce interference of the first spacer 122 with the screw.

The circuit breaker may further include a leakage release. Based on this, in some embodiments, as shown in fig. 1, 3 and 5, the separator 12 may further include a second separator 123, the second separator 123 being connected to the fixing wall 121 and/or the first separator 122, a side of the second separator 123 facing the middle cover 14 for supporting a lead of the leakage trip. The second partition 123 is located on a side facing the middle cap 14 at a different position from the first via K1 in a third direction Z, which is perpendicular to the first direction X and the second direction Y.

The leakage release is electrically connected with a circuit board of the circuit breaker through a lead. The leakage tripping device is used for receiving a tripping command sent by a circuit board in the circuit breaker and controlling the circuit breaker to trip according to the tripping command. Based on the layout of structural components in the current breaker, taking a four-pole breaker as an example, the leakage release is usually installed in an A-phase chamber or a C-phase chamber. One end of the lead wire of the leakage release is positioned in the contact mechanism cavity Q2, and the other end of the lead wire needs to extend into the transformer cavity Q1 from the contact mechanism cavity Q2 and then is electrically connected with the circuit board.

The number of second separator plates 123 may be one, and the second separator plates 123 and the leakage release correspond to the same contact mechanism chamber Q2. In the case where the leakage release is installed in the a-phase chamber, the second separator 123 may correspond to the a-phase chamber. In the case where the leakage release is installed in the C-phase chamber, the second separator 123 may correspond to the C-phase chamber.

The second partition 123 may be connected to the side of the fixing wall 121 and/or the first partition 122 facing the middle cover 14, or may be connected to either side of the fixing wall 121 and/or the first partition 122 in the second direction Y. As shown in fig. 5, the second partition 123 may be mounted in the mounting groove C1 between the first wall 1211 and the second wall 1212. The mounting position of the second separator 123 and the connection manner between the second separator 123 and other structural members in the embodiment of the present application are not particularly limited.

The side of the second separator 123 facing the middle cover 14 is used for supporting the lead wire of the leakage release, and the first via K1 is used for supporting the phase conductive element. Based on this, the side of the second partition 123 facing the middle cover 14 is different from the position of the first via hole K1 in the third direction Z, that is, the position of the second partition 123 for supporting the lead of the leakage release is different from the position of the first partition 122 for supporting the phase conductive member in the third direction Z.

Illustratively, the second partition 123 may be located at a higher position in the third direction Z than the first via K1 is located at a side toward the middle cap 14. Alternatively, the position of the side of the second partition 123 facing the middle cap 14 in the third direction Z may be lower than the position of the first via K1 in the third direction Z.

Through the scheme, the lead wire of the leakage release and the phase conductive piece can be supported at different heights of the partition piece 12 in the third direction Z, so that the lead wire of the leakage release is not easy to wind with the phase conductive piece, and the possibility of mutual interference between the lead wire of the leakage release and the phase conductive piece is reduced.

Further, in some embodiments, as shown in fig. 3, a second via K2 may be disposed between the second partition 123 and the middle cover 14, and the lead of the leakage release passes through the second via K2.

The second via K2 may be a through hole provided in a side of the second partition plate 123 toward the middle cap 14, a through hole provided in a side of the middle cap 14 toward the second partition plate 123, or a combination of a through hole provided in a side of the second partition plate 123 toward the middle cap 14 and a through hole provided in a side of the middle cap 14 toward the second partition plate 123. As shown in fig. 7, the second via K2 may be a hole formed between the second partition 123 and the middle cap 14 after the second partition 123 is provided with the inclined chamfer J on the side facing the middle cap 14, and this embodiment is not limited thereto.

Through the second via hole K2, the lead wire of the leakage release can be limited, the possibility of shaking the lead wire during installation or normal use is reduced, and the possibility of interference between the lead wire and the phase conductive part and between the lead wire and other structural parts can be further reduced.

In the side of the second separator 123 facing the middle cap 14, the rest of the side except for the portion where the second via hole K2 is provided may be in contact with the middle cap 14. In this way, the possibility of conductive particles entering the transformer chamber Q1 from between the second separator 123 and the middle cover 14 can be reduced.

Further, in some embodiments, the first side wall 111 and/or the second side wall 112 of the base 11 may be provided with a fitting groove along the third direction Z. One side of the partition 12 near the first side wall 111 may be installed in an assembly groove on the first side wall 111, and one side of the partition 12 near the second side wall 112 may be installed in an assembly groove on the second side wall 112.

By this arrangement, the path of the conductive particles from between the partition 12 and the first side wall 111 and/or the path of the conductive particles from between the partition 12 and the second side wall 112 to the transformer chamber Q1 can be lengthened, increasing the difficulty of the conductive particles entering the transformer chamber Q1 from the contact mechanism chamber Q2. The principle thereof may be referred to the previous description of the cooperation of the first partition 122 and the mounting groove C1, and will not be described again.

In some embodiments of the present application, the separator 12 includes a first wall 1211, a second wall 1212, a first separator 122, and a second separator 123. The first partition plate 122 and the second partition plate 123 are mounted in a mounting groove C1 formed between the first wall 1211 and the second wall 1212, the first partition plate 122 is provided with a first via hole K1 on a side facing the middle cap 14, and the second partition plate 123 is provided with a second via hole K2 on a side facing the middle cap 14.

After the phase conductive member passes through the first via hole K1 and the lead wire of the leakage release passes through the second via hole K2, as shown in fig. 8, in a side of the first partition 122 facing the middle cover 14, the other parts except for the part where the first via hole K1 is disposed are all in contact with the middle cover 14, and in a side of the second partition 123 facing the middle cover 14, the other parts except for the part where the second via hole K2 is disposed are all in contact with the middle cover 14, so that communication between the plurality of contact mechanism chambers Q2 and the transformer chamber Q1 will not be performed.

Therefore, the embodiment of the application can effectively separate the plurality of contact mechanism chambers Q2 and the transformer chamber Q1 through the separating piece 12, so that conductive particles in the plurality of contact mechanism chambers Q2 are difficult to enter the transformer chamber Q1 to be adhered to each phase of conductive piece, the occurrence probability of short-circuit conditions can be effectively reduced, and the use safety of the circuit breaker is improved.

The present embodiment also provides a circuit breaker comprising the housing assembly 1 of any of the previous embodiments. Since the structure and the beneficial effects of the housing assembly 1 are described in detail in the previous embodiments, the description thereof is omitted herein.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A housing assembly for a circuit breaker, comprising:

The base comprises a mutual inductor chamber and a plurality of contact mechanism chambers, wherein the contact mechanism chambers are arranged side by side along a first direction, the contact mechanism chambers and the mutual inductor chamber are arranged along a second direction, and the first direction is perpendicular to the second direction;

and the separator is arranged on the base and positioned between the contact mechanism chambers and the transformer chamber so as to separate the contact mechanism chambers and the transformer chamber.

2. The housing assembly of claim 1, wherein the base includes first and second opposing side walls;

the partition is of a unitary structure, one side of the partition in the first direction is in contact with the first side wall, and the other side of the partition in the first direction is in contact with the second side wall.

3. The housing assembly of claim 1, wherein the divider includes a fixed wall and a first divider aligned in the first direction, the fixed wall being connected to the base, one of the first divider being connected between two adjacent fixed walls.

4. The housing assembly of claim 3, further comprising a middle cover that covers the base;

The side of the fixed wall facing the middle cover is contacted with the middle cover; and/or the number of the groups of groups,

the side of the first partition plate facing the middle cover is contacted with the middle cover.

5. The housing assembly of claim 4, wherein the fixed wall includes a first wall and a second wall aligned in the second direction, a mounting groove being formed between the first wall and the second wall, the first partition being mounted to the mounting groove.

6. The housing assembly of claim 5, wherein a side of the first wall facing the middle cap is different from a side of the second wall facing the middle cap in a third direction; wherein the third direction is perpendicular to the first direction and the second direction.

7. The housing assembly of claim 4, wherein a first via is provided between the first bulkhead and the middle cover, or wherein the first via is provided between the first bulkhead and the base for a phase conductive member of the circuit breaker to pass through.

8. The housing assembly of claim 7, wherein the circuit breaker further comprises a leakage release, the partition further comprising a second partition connected to the fixed wall and/or the first partition, the second partition facing a side of the middle cover for supporting leads of the leakage release;

The second partition board faces to one side of the middle cover and is different from the first through hole in position in a third direction, and the third direction is perpendicular to the first direction and the second direction.

9. The housing assembly of claim 8, wherein a second via is provided between the second spacer and the middle cap, the lead of the leakage release passing through the second via.

10. A circuit breaker comprising a housing assembly according to any of claims 1-9.