CN218160222U - Wiring structure and circuit breaker - Google Patents

Abstract

The embodiment of the application provides a wiring structure and a circuit breaker, and relates to the technical field of distribution equipment. The wiring structure comprises a wiring piece, a fixing piece and a fastening piece. The wiring piece is provided with a wiring through hole, the fixing piece is provided with a mounting through hole, and the fastening piece penetrates through the wiring through hole and the mounting through hole to clamp the external terminal and the wiring piece together with the fixing piece; when the fastener and the fixing piece clamp the external terminal and the wiring piece, the fixing piece is connected with the wiring piece. The fastener and the mounting of this application embodiment can be with external terminal, wiring piece centre gripping, fixed, and external terminal is fixed back with the wiring piece, through being connected mounting and wiring piece, make the mounting can carry on spacingly to the wiring piece, reduce the wiring piece and take place the possibility of removing along the axis direction of perpendicular to fastener, improve the reliability of external terminal and wiring piece contact, the stability of electricity connection.

Description

Wiring structure and circuit breaker

Technical Field

The embodiment of the application relates to the technical field of distribution equipment, in particular to a wiring structure and a circuit breaker.

Background

A circuit breaker is a mechanical switching device that can switch on, carry and break a current under normal circuit conditions, and also can switch on, carry a certain time and break a current under a prescribed abnormal circuit (e.g., a short circuit). The wiring structure is a structure for electrically connecting an external terminal in the circuit breaker, and after the wiring structure is electrically connected with the external terminal, the circuit breaker can participate in power distribution as a part of a power distribution system, or the electric energy of a power supply can be distributed to a load.

However, the conventional wiring structure has low reliability in connection with the external terminal.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present application provide a wiring structure and a circuit breaker to solve the problem that the reliability of the connection between the existing wiring structure and an external terminal is low.

In a first aspect, an embodiment of the present application provides a wiring structure. The wiring structure comprises a wiring piece, a fixing piece and a fastening piece. The wiring piece has a wiring through hole, the fixing piece has a mounting through hole, and the fastener passes through the wiring through hole and the mounting through hole to clamp the external terminal and the wiring piece together with the fixing piece. When the fastener and the fixing piece clamp the external terminal and the wiring piece, the fixing piece is connected with the wiring piece.

Among the technical scheme of this application embodiment, can press from both sides tight, fixed with external terminal, wiring piece through fastener and mounting, improve the reliability of external terminal and wiring piece contact to and the stability of electricity connection. In addition, after the external terminal is fixed with the wiring piece, the fixing piece is connected with the wiring piece, so that the fixing piece can limit the wiring piece, the possibility that the wiring piece moves or loosens along the axis direction perpendicular to the fastening piece is reduced, and the contact reliability of the external terminal and the wiring piece is further improved.

In some embodiments, the surface of the wire connecting piece facing the fixing piece is provided with a first connecting structure, one end of the fixing piece close to the wire connecting piece is provided with a second connecting structure matched with the first connecting structure, and the fixing piece and the wire connecting piece are connected through the first connecting structure and the second connecting structure.

Through above-mentioned scheme, first connection structure, second connection structure can be connected mounting and wiring piece, and can carry on spacingly to first connection structure after second connection structure and the cooperation of first connection structure, realize the mounting to the spacing of wiring piece, reduce the wiring piece and take place to remove or not hard up the possibility along the axis direction of perpendicular to fastener.

In some embodiments, the first connecting structure is a counter bore formed in the surface of the wire connecting member by the fixing member, and the second connecting structure is a post.

Through the scheme, the convex column of the fixing piece can form a counter bore on the surface of the wiring piece and extend into the counter bore so as to connect the fixing piece and the wiring piece in an interference manner; after the convex column enters the counter bore, the outer wall of the convex column can be matched with the inner wall of the counter bore, the limiting of the fixing piece on the wiring piece is achieved, and the possibility that the wiring piece moves or loosens along the axis direction perpendicular to the fastening piece is reduced.

In some embodiments, the first connecting structure is a protrusion and the second connecting structure is a groove that fits the protrusion.

Through the scheme, the groove of the fixing piece can be matched with the protrusion of the wiring piece so as to coat the protrusion, and the connection of the fixing piece and the wiring piece is realized; after the protrusion is coated by the groove, the protrusion can be limited through the groove wall, the limiting of the fixing piece on the wiring piece is realized, and the possibility that the wiring piece moves or loosens along the axis direction perpendicular to the fastening piece is reduced.

In some embodiments, the fastener includes a first portion and a second portion connected, a mounting through-hole extending through the first portion and the second portion, and a fastener passing through the second portion and the first portion in sequence along the mounting through-hole.

Through the scheme, when the fastener is in threaded fit with the fixing piece, the axial dimension of the mounting through hole is larger than that of the fixing piece only comprising the first part or the second part, more screw threads can be arranged in the mounting through hole, under the condition that the torque force applied to the fastener is the same, the torque force borne by each screw thread is smaller, and the screw threads are less prone to slipping. When the fastener is in interference fit with the fixing member, the contact area of the fastener and the fixing member is larger than that when the fixing member only comprises the first part or the second part, and the fixing member and the fastener can be connected more reliably.

In some embodiments, along a connecting direction of the first portion and the second portion, a projection of the second portion falls within a projection range of the first portion, and the first portion is configured as a rectangular parallelepiped structure.

Along the connecting direction of the first part and the second part, when the projection of the second part falls within the projection range of the first part, the second part does not influence the size of the fixing piece along the direction perpendicular to the connecting direction. When the first portion is the cuboid structure, under the condition that the length of cuboid and the arris length of square or the distance between two relative faces of regular hexagonal prism is the same, because the width of cuboid is less than the arris length of square, and is less than the distance between two relative arris of regular hexagonal prism along the axis, consequently, when the mounting is applied to equipment such as circuit breaker, the volume of equipment can set up littleer. In addition, the mounting is connected with the fastener, and when the casing of equipment removed towards the wiring piece, the arm of force between cuboid and the casing was greater than the arm of force between square and the casing for the mounting is more difficult to damage the casing.

In some embodiments, the plurality of side surfaces of the first portion are all connected by an arc transition surface.

Through the scheme, the possibility that the fixing piece damages the inner wall of the shell in the process of being installed in the shell of equipment such as a circuit breaker or the like or in the process of moving towards the wiring piece in the shell can be reduced.

In a second aspect, the embodiment of the present application further provides a circuit breaker. This circuit breaker includes the wiring structure and the base of first aspect, and the base has the installation cavity, and the wiring structure is installed in the installation cavity.

Through the scheme, the reliability of mechanical connection between the circuit breaker and other equipment or loads in the power distribution system or the stability of electrical connection can be improved.

In some embodiments, the mounting cavity comprises a first mounting cavity and a second mounting cavity which are communicated; the wiring piece is fixed in the first mounting cavity; the mounting is installed in the second installation cavity, and can follow the second installation cavity and move towards the direction that is close to the wiring piece to be connected with the wiring piece.

Through the scheme, the wiring piece can be fixed by the first installation cavity so as to be connected with the fixing piece conveniently; the mounting can move towards the direction that is close to the wiring piece under the guide effect of second installation cavity, is connected with the wiring piece, is favorable to improving the connection accuracy of mounting and wiring piece.

In some embodiments, the circuit breaker further comprises an insulator connected to the base and mounted at an end of the second mounting chamber remote from the first mounting chamber.

Through above-mentioned scheme, before the mounting is connected with the fastener, the tip of insulating part orientation mounting can contact with the mounting, supports the mounting, avoids the mounting to deviate from in the base of circuit breaker, lose. After the fastener passes through the installation through-hole of mounting, the insulating part can hold the position that the fastener passed the installation through-hole to keep apart the mounting with the outside conductive parts of circuit breaker insulation, can also carry on spacingly to the fastener, reduce the fastener and radially rock the possibility.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and in order that the technical means of the embodiments of the present application can be clearly understood, the embodiments of the present application are specifically described below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic diagram of a wiring structure according to some embodiments of the present application.

Fig. 2 is an exploded view of a wiring structure and external terminals according to some embodiments of the present application.

FIG. 3 is a first schematic view of a wire connecting member and a fixing member according to some embodiments of the present application.

FIG. 4 is a second schematic view of a wire connecting member and a fixing member according to some embodiments of the present application.

FIG. 5 is a schematic view of a fastener according to some embodiments of the present application.

Fig. 6 is a schematic diagram of a circuit breaker according to some embodiments of the present application.

FIG. 7 is a schematic view of a base in some embodiments of the present application.

Description of reference numerals:

1. a wiring structure; 11. a wiring member; A. a connecting through hole; 110. a first connecting structure; 12. a fixing member; B. mounting through holes; 120. a second connecting structure; 121. a first portion; 1211. an arc transition surface; 122. a second portion; 13. a fastener; 2. a base; C. a mounting cavity; c1, a first installation cavity; c2, a second mounting cavity; c21, a first section; c22, a second section; 3. an insulating member; 4. and an external terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in 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 obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and in the description of the figures are intended to cover, but not exclude, other things. The word "a" or "an" does not exclude a plurality. Unless otherwise indicated, "plurality" means more than two (including two), and similarly, "plurality" means more than two (including two).

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. For example, in the description of the present application, the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and therefore should not be construed as limiting the present application.

Further, expressions of directions indicated for explaining the operation and configuration of each member of the embodiment, such as the X direction, the Y direction, and the Z direction, are not absolute but relative, and although these indications are appropriate when each member is in the position shown in the drawings, when the position is changed, the directions should be interpreted differently to correspond to the change.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and, for example, mechanical structures such as "connected" or "connected" may refer to physical connections such as fixed, detachable, or integral connections unless expressly stated or limited otherwise. "connected" or "coupling" of circuit structures may refer to electrical or signal connections in addition to physical connections, e.g., direct connections, i.e., physical connections, or indirect connections through at least one element therebetween, so long as electrical communication is achieved. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In order to facilitate understanding of the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application.

It should be noted that, the wiring structure according to the embodiment of the present application may be applied to a circuit breaker, and may also be applied to other devices, which is not limited in the present application.

The embodiment of the application provides a wiring structure 1. Fig. 1 is a schematic view of a wiring structure 1 according to some embodiments of the present application. Fig. 2 is an exploded view of the wiring structure 1 and the external terminal 4 according to some embodiments of the present application. As shown in fig. 1 and 2, the wiring structure 1 includes a wiring member 11, a fixing member 12, and a fastening member 13. The wiring piece 11 has a wiring through hole a, the fixing piece 12 has a mounting through hole B, and the fastener 13 passes through the wiring through hole a and the mounting through hole B to clamp the external terminal 4 and the wiring piece 11 together with the fixing piece 12. When the fixing member 13 and the fixing member 12 clamp the external terminal 4 and the wiring member 11, the fixing member 12 is connected to the wiring member 11.

The wiring member 11 is a member for electrical connection with the external terminal 4. The wiring member 11 may be a part of a main circuit in a device (e.g., a circuit breaker) that is electrically connected to the external terminal 4, and then electrically connects the device to another device. The wire members 11 may be provided in a plate-like structure. The wiring member 11 may be made of a conductive material (e.g., copper).

The fixing member 12 is a member that clamps the wire connecting member 11 and the external terminal 4 together with the fastening member 13. The fixing member 12 and the fastening member 13 may be provided in a cylindrical structure. The fixing member 12 may be a nut, the mounting through-hole B may be a screw hole, and the fastening member 13 may be a screw, so that the fixing member 12 and the fastening member 13 may be threadedly coupled. Alternatively, the mounting through-hole B may be a light hole, and the fastener 13 may be a rod that fits into the mounting through-hole B, so that the fixing member 12 and the fastener 13 may be interference fit. The fastening member 13 may have a first end and a second end, wherein the second end may have a radial dimension equal to that of the mounting through-hole B so as to pass through the fixing piece 12, and the first end may have a radial dimension larger than that of the second end so as to clamp the wire member 11, the external terminal 4 together with the fixing piece 12 after the second end passes through the fixing piece 12. The fixing member 12 and the fastening member 13 may be made of a material having a relatively high hardness (e.g., iron, alloy), or the like.

When the fixing member 12 and the fastening member 13 clamp the wiring member 11 and the external terminal 4, the external terminal 4 may be first placed on a side of the wiring member 11 facing the fastening member 13, or placed on a side of the wiring member 11 facing the fixing member 12, then the second end of the fastening member 13 is inserted through the connecting through hole a of the wiring member 11, and finally the fixing member 12 is connected to the second end of the fastening member 13, and the external terminal 4 and the wiring member 11 are clamped by the first end of the fastening member 13 and the fixing member 12.

Note that the external terminal 4 may be provided in a plate-like structure. In some embodiments, the external terminal 4 may be provided with a through hole, so that during the process of clamping the external terminal 4 and the wiring member 11 by the fastening member 13 and the fixing member 12, the fastening member 13 may pass through the through hole of the external terminal 4 first and then pass through the connecting through hole a, or pass through the connecting through hole a first and then pass through the through hole of the external terminal 4, and finally pass through the mounting through hole B. In other embodiments, the external terminal 4 may also be provided with a semicircular groove adapted to the fastening member 13, so that during the process of clamping the external terminal 4 and the wiring member 11 by the fastening member 13 and the fixing member 12, the external terminal 4 may be disposed between the wiring member 11 and the first end of the fastening member 13, or between the wiring member 11 and the fixing member 12 before the fixing member 12 contacts the wiring member 11.

Further, the second end of the fastening member 13 may first pass through a spacer having a larger radial dimension than the first end and having a through hole, and then be connected to the external terminal 4, the wire connecting member 11 and the fixing member 12, so as to increase the force applied to the external terminal 4 or the wire connecting member 11, thereby making the contact between the external terminal 4 and the wire connecting member 11 more reliable.

It should be noted that when the fixing member 12 is a nut and the fastening member 13 is a screw, the connecting through hole a of the wire connecting member 11 may have a smooth inner wall and a radial dimension larger than that of the fastening member 13, so that the inner wall of the connecting through hole a is not easily damaged. This is because, when the radial dimension of the connecting through-hole a is larger than the fastener 13, the inner wall may not come into contact with the fastener 13 and is not easily damaged by the external thread of the fastener 13; on the contrary, if the through-holes a are threaded holes, since the thickness of the wiring member 11 having a plate-like structure is relatively small, the number of the screw threads which can be provided on the inner wall of the through-holes a is small, and the screw threads are more easily damaged or deformed since each screw thread receives a large torsion when the screw thread is coupled with the fastening member 13.

In addition, it is noted that after the external terminal 4 and the wiring member 11 are clamped, the wiring member 11 may move in a direction perpendicular to the axis of the fastening member 13 to be misaligned with the external terminal 4, or even become loose. Therefore, in the embodiment of the present application, after the external terminal 4 and the wiring member 11 are clamped, the fixing member 12 and the wiring member 11 are configured to be connected, so that the fixing member 12 can limit the wiring member 11, and the possibility that the wiring member 11 moves in the direction perpendicular to the axis of the fastening member 13 is reduced.

When the fixing member 12 is connected to the wiring member 11, various connection methods are possible. In some possible connection manners, a first connection member may be disposed on a surface of the wiring member 11 facing the fixing member 12, and a second connection member may be disposed on an end of the fixing member 12 near the wiring member 11, so as to connect the fixing member 12 and the wiring member 11 through the first connection member and the second connection member. For example, the first connecting member may be a boss having a blind hole, and the second connecting member may be a pin fitted into the blind hole, and the pin may be inserted into the blind hole to connect the fixing member 12 with the wiring member 11. In other possible connection manners, as shown in fig. 3 and 4, the surface of the wire connecting member 11 facing the fixing member 12 is provided with a first connection structure 110, one end of the fixing member 12 close to the wire connecting member 11 is provided with a second connection structure 120 matched with the first connection structure 110, and the fixing member 12 and the wire connecting member 11 are connected through the first connection structure 110 and the second connection structure 120. For example, the first connecting structure 110 may be a groove on the surface of the wire member 11, and the second connecting structure 120 may be a projection adapted to fit into the groove, and the projection may extend into the groove to connect the fixing member 12 with the wire member 11. It should be noted that the depth of the groove may be set to be small (e.g., 1 mm) to reduce the influence on the thickness of the wire member 11.

In the technical scheme of this application embodiment, can press from both sides tight, fixed with external terminal 4, wiring piece 11 through fastener 13 and mounting 12, improve the reliability that external terminal 4 and wiring piece 11 contacted to and the stability of electricity connection. In addition, after the external terminal 4 is fixed to the wiring material 11, the fixing member 12 is connected to the wiring material 11, so that the fixing member 12 can limit the position of the wiring material 11, the possibility that the wiring material 11 moves or loosens in the direction perpendicular to the axis of the fastening member 13 is reduced, and the reliability of the contact between the external terminal 4 and the wiring material 11 is further improved.

According to other embodiments of the present application, as shown in fig. 3, the first connecting structure 110 may be a counter bore formed by the fixing element 12 on the surface of the wire connecting element 11, and the second connecting structure 120 may be a convex column.

The post is a structure for connection with the wiring member 11. The convex column can be arranged on the end face of the fixing piece 12 facing the wiring piece 11 and is arranged in a cylindrical shape. One or more convex columns can be arranged, and the application is not particularly limited in this respect. For example, when one stud is provided, the mounting through-hole B may penetrate the stud in an axial direction of the stud, and a radial dimension of the stud may be smaller than a dimension of the wire connection piece 11 in a direction perpendicular to the axial direction of the connection through-hole a and larger than the dimension of the connection through-hole a. When the protruding columns are provided in plurality, the plurality of protruding columns may be distributed at intervals on the end surface of the fixing member 12 facing the wire connecting member 11.

The counter bore is a structure formed on the surface of the wiring member 11 after the post presses the wiring member 11. The quantity of the counter bores is the same as that of the convex columns.

The process of forming the counter bore on the surface of the wiring piece 11 by the convex column is as follows: the fixing piece 12 moves towards the direction close to the wiring piece 11 along the fastening piece 13 under the action of force until the convex column is contacted with the wiring piece 11, and the convex column starts to apply force to the wiring piece 11, so that the external terminal 4 and the wiring piece 11 are clamped and fixed; with the continuous stress of the fixing part 12, the convex column can apply a larger force to the wiring piece 11, and the part of the wiring piece 11, which is in contact with the convex column, deforms under a larger pressure to form a counter bore.

It is noted that the depth of the counterbore may be controlled by controlling the force applied to the fastener 12 during the formation of the counterbore. In this embodiment, the depth of the counterbore may be smaller (e.g., 1 mm) to reduce the effect on the thickness of the wire member 11.

It should be noted that, during the process of forming the counter bore on the surface of the wire connecting member 11, at least a portion of the post will extend into the counter bore as the counter bore is formed, so as to connect the fixing member 12 and the wire connecting member 11 by interference.

In the technical solution of this embodiment, the stud of the fixing element 12 may form a counterbore on the surface of the wire connecting element 11, and extend into the counterbore, so as to connect the fixing element 12 and the wire connecting element 11 by interference; after the convex column enters the counter bore, the outer wall of the convex column can be matched with the inner wall of the counter bore, the limiting of the fixing piece 12 on the wiring piece 11 is achieved, and the possibility that the wiring piece 11 moves or loosens along the direction perpendicular to the axis of the fastening piece 13 is reduced.

According to other embodiments of the present application, as shown in fig. 4, the first connection structure 110 may also be a protrusion, and the second connection structure 120 may also be a groove adapted to the protrusion.

The projections and recesses are structures for connecting the fixing piece 12 with the wiring piece 11. The protrusion and the groove can be arranged in one or more than one. For example, when the protrusions are provided in one, they may be provided in a ring shape, and correspondingly, the groove may be provided as an annular groove adapted to the annular protrusion. When the protrusions are arranged in plurality, the protrusions may be arranged at intervals and surround in a substantially annular shape, and correspondingly, the grooves may also be arranged at intervals and surround in a substantially annular shape.

When the fixing member 12 is connected with the wiring member 11 through the protrusion and the groove, the groove gradually approaches the protrusion along with the movement of the fixing member 12 towards the direction of approaching the wiring member 11, and covers the protrusion, so that the connection of the fixing member 12 and the wiring member 11 is realized.

In the technical solution of this embodiment, the groove of the fixing member 12 can be adapted to the protrusion of the wiring member 11 to cover the protrusion, so as to connect the fixing member 12 and the wiring member 11; after the protrusion is coated by the groove, the protrusion can be limited by the groove wall, so that the fixing piece 12 can limit the wiring piece 11, and the possibility that the wiring piece 11 moves or loosens along the axis direction perpendicular to the fastening piece 13 is reduced.

According to other embodiments of the present application, FIG. 5 is a schematic view of a fastener 12 according to some embodiments of the present application. As shown in fig. 5, the fixing member 12 includes a first portion 121 and a second portion 122 connected to each other, a mounting through hole B penetrates the first portion 121 and the second portion 122, and the fastening member 13 penetrates the second portion 122 and the first portion 121 along the mounting through hole B in this order.

The first portion 121 and the second portion 122 are portions for connection with the fastener 13. The first portion 121 and the second portion 122 may be integrally formed or welded together when they are connected, and the present application is not limited thereto.

When the fixing member 12 includes the first portion 121 and the second portion 122 connected and the fastener 13 is interference-fitted with the fixing member 12, the contact area of the fastener 13 with the fixing member 12 is larger than that when the fixing member 12 includes only the first portion 121 or the second portion 122, and the fixing member 12 and the fastener 13 can be connected more reliably.

When the fixing member 12 includes the first portion 121 and the second portion 122 connected to each other and the fastening member 13 is screw-engaged with the fixing member 12, the thread of the inner wall of the installation through hole B is less likely to slip than when the fixing member 12 includes only the first portion 121 or the second portion 122, because the fixing member 12 includes the first portion 121 and the second portion 122 connected to each other, the axial dimension of the installation through hole B can be set larger and more threads can be set, and when the fastening member 13 passes through the installation through hole B, more threads are provided for engagement with the external thread of the fastening member 13, and the torque applied to each thread is smaller in the case where the same amount of torque is applied to the fastening member 13.

In addition, when the number of the screw threads in the mounting through hole B is large, the reliability of the screw connection between the fixing member 12 and the fastening member 13 can be improved, the possibility of the separation of the fixing member 12 from the fastening member 13 can be reduced, and the force of clamping the fixing member 12 and the fastening member 13 to the wiring material 11 and the external terminal 4 can be improved.

In this embodiment, it should be noted that when the fastening member 13 passes through the second portion 122 and the first portion 121 in sequence along the mounting through hole B, the second portion 122 can be connected to the wire connecting member 11 because the second portion 122 is first engaged with the fastening member 13.

Since the fixing member 12 in the related art is mostly configured as a regular hexagonal prism structure having a large radial dimension, when the wiring structure 1 is applied to a circuit breaker or the like, the volume of the device is increased.

Based on this, in the connection direction of the first portion 121 and the second portion 122, the embodiment of the present application sets the projection of the second portion 122 to fall within the projection range of the first portion 121, and sets the first portion 121 to be a square structure or a rectangular parallelepiped structure, so as to reduce the volume of the fixing member 12, and thus reduce the volume of the apparatus.

The projection of the second portion 122 is arranged to fall within the projection of the first portion 121, and the dimension of the fixture 12 in a direction perpendicular to the direction of connection of the first portion 121 to the second portion 122 depends on the dimension of the first portion 121. Specifically, when the projected outer contour of the second portion 122 overlaps with the projected outer contour of the first portion 121, the size of the first portion 121 can be set to be minimum and the volume of the fixing member 12 can be set to be minimum in the connecting direction of the overlapped portion.

In some embodiments, when the first portion 121 is configured as a square structure, in a case where the edge length of the first portion 121 is the same as the distance between two faces of the regular hexagonal prism opposing thereto, the size of the fixing piece 12 may be reduced (the square edge length is smaller than the distance between two edges of the regular hexagonal prism opposing along the axis) to allow the volume of the apparatus to be set small when the wiring structure 1 is applied to the apparatus such as the circuit breaker.

In other embodiments, when the first portion 121 is configured as a rectangular parallelepiped structure, in a case where the length of the first portion 121 is the same as the distance between two faces of the regular hexagonal prism opposed thereto, the dimension of the fixing piece 12 in the width direction (the width of the rectangle is smaller than the distance between two edges of the regular hexagonal prism opposed to each other along the axis) is reduced to allow the volume of the apparatus to be set small when the wiring structure 1 is applied to the apparatus such as a circuit breaker.

It should be noted that, in the case that the length of the rectangular parallelepiped is the same as the edge length of the cube, the width of the rectangular parallelepiped is smaller than the edge length of the cube, so that when the fixing member 12 is applied to a circuit breaker or other equipment, the volume of the equipment can be set smaller than before.

In addition, under the condition that the space for assembling the fixing piece 12 arranged in the housing is certain, when the fixing piece 12 moves towards the wiring piece 11 in the housing, the moment arm between the cuboid and the housing can be larger than that between the cube and the housing, so that the fixing piece 12 is less prone to damaging the housing.

It should be noted that, regardless of whether the first portion 121 of the present embodiment is configured as a cube structure or a rectangular parallelepiped structure, the second portion 122 may be configured as a cylindrical structure, and when the first portion 121 is configured as a cube structure, a radial diameter of the second portion 122 may be configured to be the same as a length of the first portion 121, and when the first portion 121 is configured as a rectangular parallelepiped structure, a radial diameter of the second portion 122 may be configured to be the same as a width of the first portion 121.

According to other embodiments of the present application, with continued reference to FIG. 5, the first portion 121 has a plurality of sides that are in transitional connection with each other via an arcuate transition surface 1211.

The plurality of sides of the first portion 121 refer to faces adjacent to a face connecting the second portion 122.

Based on the foregoing statement, since the radial dimension of the second portion 122 is smaller than or equal to the dimension of the first portion 121, the probability that the first portion 121 comes into contact with the inner wall of the housing is greater than the probability that the second portion 122 comes into contact with the inner wall of the housing during the process of fitting the fixing member 12 to the housing of the circuit breaker or the like, or during the process of moving the fixing member 12 inside the housing toward the wire member 11.

On this basis, if the sides of the first portion 121 are arranged to transition through an edge, the edge may damage the side wall of the housing during the process of assembling the fixing member 12 to the housing or during the process of moving the fixing member 12 in the housing in the direction of approaching the wire connecting member 11.

Therefore, the present embodiment can reduce the possibility that the fixing member 12 damages the inner wall of the housing during the process of being installed in the housing of the circuit breaker or the like or during the process of being moved toward the wiring member 11 in the housing by arranging the plurality of sides of the first portion 121 to be transitionally connected through the arc-shaped transition surface 1211.

The present application further provides a circuit breaker according to some embodiments of the present application. Fig. 6 is a schematic diagram of a portion of a circuit breaker according to some embodiments of the present application. Fig. 7 is a schematic view of the base 2 in some embodiments of the present application. As shown in fig. 6 and 7, the circuit breaker includes the wiring structure 1 and the base 2, the base 2 has a mounting cavity C, and the wiring structure 1 is mounted in the mounting cavity C.

The base 2 is a member for mounting the wiring structure 1. The base 2 may mount the wiring structure 1 through the mounting cavity C. The shape of the mounting cavity C may be adapted to the shape of the wiring structure 1.

In the technical scheme of this embodiment, through setting up the circuit breaker to including aforementioned wiring structure 1, can improve the reliability of circuit breaker and the terminal mechanical connection of other equipment or load in the distribution system, the stability of electricity connection.

According to other embodiments of the present application, please continue to refer to fig. 7, the installation cavity C includes a first installation cavity C1 and a second installation cavity C2 which are communicated with each other; the wiring piece 11 is fixed to the first mounting cavity C1; the fixing member 12 is mounted to the second mounting cavity C2 and can move along the second mounting cavity C2 toward a direction close to the wire connecting piece 11 to be connected with the wire connecting piece 11.

The first mounting cavity C1 is a structure for mounting the wire connection member 11. The structure of first installation cavity C1 can be adapted to platelike wiring piece 11, and the size of first installation cavity C1 along the axis direction of perpendicular to can set up to be the same with the size of wiring piece 11 along the axis direction of perpendicular to connect the through-hole A, like this, wiring piece 11 installs behind first installation cavity C1, can be spacing and can't take place to remove along the axis direction of perpendicular to connect the through-hole A by the chamber wall of first installation cavity C1.

The second mounting cavity C2 is a structure for mounting the fixing member 12. When the fixing member 12 includes the first portion 121 and the second portion 122, the second installation cavity C2 may include a first section C21 and a second section C22, wherein the first section C21 may be adjacent to the first installation cavity C1 to install the second portion 122, and the second section C22 may install the first portion 121. In this embodiment, the size of the first section C21 in the direction perpendicular to the axis may be smaller than the size of the second section C22 in the direction perpendicular to the axis, and smaller than the size of the first installation cavity C1 in the direction perpendicular to the axis, so that the first installation cavity C1 near the cavity wall of the first section C21 may limit the wire connector 11, and the second section C22 near the cavity wall of the first section C21 may limit the first portion 121, thereby reducing the possibility that the second portion 122 abuts against and pushes the wire connector 11, so that the wire connector 11 moves in the first installation cavity C1.

Further, the axial dimension of the first segment C21 may be less than or equal to the axial dimension of the second portion 122. For example, when the axial dimension of the first segment C21 is less than the axial dimension of the second portion 122, the second portion 122 may form the aforementioned counterbore in the wire member 11 and extend into the counterbore. When the axial dimension of the first segment C21 is equal to the axial dimension of the second portion 122, the second portion 122 may be provided with the aforementioned recess to mate with the aforementioned projection on the wire connecting piece 11 and allow the end surface of the second portion 122 to just contact the surface of the wire connecting piece 11 after the recess has covered the projection.

It should be noted that during the process of installing the fixing member 12 in the second installation cavity C2 or during the process of moving the fixing member 12 in the second installation cavity C2 toward the wiring member 11, the second installation cavity C2 can guide the fixing member 12 to facilitate the installation of the fixing member 12 and the connection of the fixing member 12 with the wiring member 11.

According to other embodiments of the present application, please continue to refer to fig. 6, the circuit breaker further includes an insulating member 3, wherein the insulating member 3 is connected to the base 2 and is installed at an end of the second installation cavity C2 far away from the first installation cavity C1.

The insulator 3 is a member for insulating the fastener 13 and the fixing member 12 from external conductive members.

The insulating part 3 and the base 2 can be detachably connected through a buckle, specifically, before the insulating part 3 is connected to the base 2, the fixing part 12 can be assembled in the second mounting cavity C2, then the insulating part 3 is connected to the base 2, and the insulating part 3 is located at one end of the second mounting cavity C2 far away from the first mounting cavity C1. Thus, before the fixing member 12 is connected to the fastening member 13, the insulating member 3 can support the fixing member 12, and the fixing member 12 is prevented from being released from the second mounting cavity C2 and lost.

Furthermore, the end of the insulator 3 facing the fixing member 12 may be provided with a guide groove. The end of the guide groove facing the fixing member 12 may be in contact with the fixing member 12 to support the fixing member 12 before the fixing member 12 is coupled to the fastener 13. After the fastening piece 13 passes through the installation through hole B of the fixing piece 12, the guide groove can accommodate the part of the fastening piece 13 passing through the installation through hole B so as to insulate and isolate the fastening piece 13 from the conductive component outside the circuit breaker, and the fastening piece 13 can be limited by the groove wall, so that the possibility that the fastening piece 13 shakes along the radial direction is reduced.

Those skilled in the art will appreciate that although some embodiments herein include some features included in other embodiments, not others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A wiring structure, comprising:

a wiring piece having a wiring through hole;

a fixing member having a mounting through-hole;

a fastening member passing through the wiring through hole and the mounting through hole to clamp the external terminal and the wiring piece together with the fixing member;

when the fastener and the fixing piece clamp the external terminal and the wiring piece, the fixing piece is connected with the wiring piece.

2. The wiring structure according to claim 1, wherein a surface of the wiring member facing the fixing member is provided with a first connecting structure, an end of the fixing member near the wiring member is provided with a second connecting structure matching with the first connecting structure, and the fixing member and the wiring member are connected through the first connecting structure and the second connecting structure.

3. The wiring structure according to claim 2, wherein the first connecting structure is a counter bore formed in a surface of the wiring member by the fixing member, and the second connecting structure is a post.

4. The wiring structure according to claim 2, wherein the first connection structure is a projection, and the second connection structure is a groove fitted with the projection.

5. The wiring structure according to claim 1, wherein said fixing member includes a first portion and a second portion connected, said mounting through-hole penetrates said first portion and said second portion, and said fastener penetrates said second portion and said first portion along said mounting through-hole in this order.

6. The wiring structure according to claim 5, wherein a projection of the second portion falls within a projection range of the first portion in a connection direction of the first portion and the second portion, and the first portion is configured as a rectangular parallelepiped structure.

7. The wiring structure of claim 6, wherein the side surfaces of the first portion are all transitionally connected by arcuate transition surfaces.

8. A circuit breaker comprising the wiring structure of any one of claims 1 to 7 and a base; the base has an installation cavity, the wiring structure is installed in the installation cavity.

9. The circuit breaker of claim 8, wherein the mounting chamber comprises a first mounting chamber and a second mounting chamber in communication; the wiring piece is fixed in the first mounting cavity; the fixing piece is installed in the second installation cavity and can move towards the direction close to the wiring piece along the second installation cavity so as to be connected with the wiring piece.

10. The circuit breaker of claim 9, further comprising an insulator coupled to the base and mounted at an end of the second chamber remote from the first chamber.

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