Circuit breaker for wiring

Abstract

The invention discloses a circuit breaker for wiring. The circuit breaker for wiring maintains voltage resistance even if an arc is generated when a fault current is cut off. A circuit breaker for wiring according to an embodiment of the present invention includes a housing, a plurality of base assemblies housed in the housing, and a reinforcing member. The reinforcing member is disposed on the base assembly. Moreover, the base assembly has a base cover, and the base cover is internally provided with a space for accommodating the fixed contact, the movable contact and the arc extinguishing part. A reinforcing member accommodating portion accommodating the reinforcing member is formed in the base cover.

Description

Technical Field

[0001] This invention relates to circuit breakers for wiring. Background Technology

[0002] A wiring circuit breaker (MCCB: Molded Case Circuit Breaker) is a type of circuit breaker designed to disconnect energized electrical equipment in the event of abnormal currents such as leakage or overcurrent to prevent electrical accidents.

[0003] A typical wiring circuit breaker internally includes fixed contacts and movable contacts. During the flow of a normal current (non-abnormal current, fault current), the fixed contacts and movable contacts are in contact with each other, thus enabling energization. Furthermore, if an abnormal current occurs, the fixed contacts and movable contacts separate, thereby disconnecting the energizer.

[0004] When the fixed and movable contacts separate, an electric arc is generated due to the abnormal current flowing between them. After an arc extinguishing process, the generated arc is discharged to the outside of the wiring circuit breaker.

[0005] The resulting electric arc can be defined as the flow of electrons under high temperature and high pressure.

[0006] The heat and pressure generated inside a wiring circuit breaker due to the interruption of current increase proportionally to the magnitude of the interrupted current.

[0007] The high temperature and high voltage arc generated when an abnormal current is interrupted produces oxides inside the base cover and also creates gaps in the base cover. These oxides flow out from the gaps and into the housing of the wiring circuit breaker. The oxides contaminate the interior of the housing and reduce its insulation performance.

[0008] To prevent contamination caused by oxides, etc., U.S. Patent Publication No. 2013-0334174 discloses that two pieces forming the interrupter housing are fastened together with bolts and nuts, and that an adhesive is used on the outer surfaces of the two pieces.

[0009] However, U.S. Patent Publication No. 2013-0334174 does not provide any constituent elements capable of filling the gaps in the base cover, except for the adhesive.

[0010] Therefore, there is a need for a component that can keep the insulation performance and withstand voltage performance of wiring circuit breakers constant. Summary of the Invention

[0011] The problem to be solved

[0012] The purpose of this invention is to provide a wiring circuit breaker that maintains constant insulation and withstand voltage performance.

[0013] Technical solutions to the problem

[0014] The objectives of the present invention described above are achieved through the following content.

[0015] An example of an embodiment of the present invention includes a wiring circuit breaker comprising a housing, a plurality of base assemblies housed within the housing, and a reinforcing member. The reinforcing member is disposed within the base assembly. Furthermore, the base assembly has a base cover, which has an internal space for accommodating a fixed contact, a movable contact, and an arc-extinguishing portion. A reinforcing member receiving portion is formed in the base cover to accommodate the reinforcing member.

[0016] Specifically, the reinforcing member receiving portion is formed in the shape of a groove recessed from the bottom surface to the top surface of the base cover.

[0017] Specifically, the base cover includes a first base cover and a second base cover that is coupled to the first base cover. The reinforcing member receiving portion is formed in the first base cover and the second base cover. When the first base cover and the second base cover are coupled, a reinforcing member receiving portion is formed.

[0018] Specifically, the reinforcing member receiving portion includes a first reinforcing member receiving portion formed at one end of the bottom surface of the first base cover and a second reinforcing member receiving portion formed at one end of the bottom surface of the second base cover. A reinforcing member receiving portion is formed by the combination of the first and second reinforcing member receiving portions. The first reinforcing member receiving portion is formed by recessing a predetermined depth from the bottom surface to the top surface of the first base cover, and the second reinforcing member receiving portion is formed by recessing a predetermined depth from the bottom surface to the top surface of the second base cover.

[0019] Specifically, the reinforcing member receiving portion includes: a first reinforcing member receiving portion formed on the side surface of the bottom end of the first base cover; and a second reinforcing member receiving portion formed on the side surface of the bottom end of the second base cover, facing the first reinforcing member receiving portion. A reinforcing member receiving portion is formed by the combination of the first reinforcing member receiving portion and the second reinforcing member receiving portion. The first reinforcing member receiving portion is formed by recessing a predetermined depth from the side surface of the bottom end of the first base cover in one direction, and the second reinforcing member receiving portion is formed by recessing a predetermined depth from the side surface of the bottom end of the second base cover in the opposite direction.

[0020] Specifically, the first reinforcing member receiving portion is formed along the end of the bottom surface of the first base cover, and the second reinforcing member receiving portion is formed along the end of the bottom surface of the second base cover.

[0021] Specifically, the reinforcing member is formed in a shape corresponding to the reinforcing member receiving portion.

[0022] Specifically, the reinforcing member is formed in the shape of a rod having a predetermined length in one direction. The reinforcing member receiving portion is formed in the shape of a groove having a predetermined length corresponding to the shape of the reinforcing member.

[0023] Specifically, the reinforcing member is formed in the shape of a plate with a predetermined thickness and a square or rectangular planar shape. The reinforcing member receiving portion is formed in the shape of a groove with a predetermined depth and a square or rectangular planar shape.

[0024] Specifically, the reinforcing member receiving portion corresponds to a part of the bottom surface of the base cover, which is a flat bottom surface of the base cover without bends, grooves, or steps.

[0025] Specifically, the preset width and length of the reinforcing member are the same as the preset width and length of the reinforcing member receiving portion.

[0026] Specifically, the reinforcing member receiving portion is formed inside the bottom surface of the base cover.

[0027] Specifically, the reinforcing member is attached to the reinforcing member receiving portion by an adhesive.

[0028] Another embodiment of the present invention provides a wiring circuit breaker comprising a housing, a plurality of base assemblies housed within the housing, and a reinforcing member. The reinforcing member is disposed within the base assemblies. Furthermore, each base assembly has a base cover, which has an internal space for accommodating a fixed contact, a movable contact, and an arc-extinguishing portion. The base cover includes a first base cover and a second base cover coupled to the first base cover. The reinforcing member is disposed between an end portion of the bottom surface of the first base cover and an end portion of the bottom surface of the second base cover.

[0029] Specifically, the shape of the reinforcing member in the length direction corresponds to the shape of the bottom surface of the base cover in the length direction.

[0030] Specifically, the reinforcing member includes a first groove and a second groove. The first groove and the second groove are formed on the outer surface of the reinforcing member along its length. The first groove and the second groove are formed in a groove shape that is recessed towards each other.

[0031] Specifically, the bottom end of the first base cover is inserted into and disposed in the first groove, and the bottom end of the second base cover is inserted into and fixed in the second groove.

[0032] Specifically, the reinforcing member is attached to the end of the bottom surface of the first base cover and the end of the bottom surface of the second base cover by an adhesive.

[0033] Specifically, the reinforcing member is formed of or includes melamine resin.

[0034] Invention Effects

[0035] According to an example of an embodiment of the present invention, a wiring circuit breaker has a reinforcing member and / or the reinforcing member is attached to a base cover by an adhesive, thereby improving the pressure resistance of the base cover and the insulation performance of the housing.

[0036] Furthermore, according to an embodiment of the present invention, the circuit breaker for wiring has a reinforcing member formed of or including melamine resin, thereby improving its voltage resistance, arc extinguishing performance, and heat resistance. Attached Figure Description

[0037] Figure 1 This is a diagram of a wiring circuit breaker illustrating an example of an embodiment of the present invention.

[0038] Figure 2 yes Figure 1 An exploded 3D view of a circuit breaker used for wiring.

[0039] Figure 3 This is a cross-sectional view of the base assembly with the handle attached.

[0040] Figure 4 It is shown Figure 2 The diagram shows the base assembly, reinforcing members, and housing.

[0041] Figure 5 yes Figure 4 A perspective view of the base assembly is shown.

[0042] Figure 6 This is a perspective view showing the bottom surface of the first reinforcing member and the base assembly of the present invention.

[0043] Figure 7 and Figure 8 This is a perspective view showing the bottom surface of the second reinforcing member and the base assembly of the present invention.

[0044] Figure 9 This is a perspective view showing the bottom surface of the third reinforcing member and the base assembly of the present invention.

[0045] Figure 10 It is a simplified representation. Figure 9 The cross-sectional view of the third reinforcing member and the base cover is shown.

[0046] Figure 11This is a simplified cross-sectional view showing the fourth reinforcing member and the base cover of the present invention. Detailed Implementation

[0047] Hereinafter, with reference to the accompanying drawings, examples of embodiments of the present invention will be described in more detail. Detailed descriptions of constituent elements of the present invention that are readily understood and reproduced by those skilled in the art will be omitted to avoid obscuring the main points of the invention.

[0048] Typically, a wiring circuit breaker (MCCB: Molded Case Circuit Breaker) is an electrical device that protects circuits and loads by automatically disconnecting the circuit in the event of an electrical overload or short circuit.

[0049] Hereinafter, an example of a wiring circuit breaker in an embodiment of the present invention will be described.

[0050] Figure 1 This is a diagram illustrating an example of a wiring circuit breaker in an embodiment of the present invention. Figure 2 yes Figure 1 An exploded 3D view of a circuit breaker used for wiring.

[0051] Reference Figure 1 and Figure 2 An example of an embodiment of the present invention, a wiring circuit breaker 10, includes a case 12, a case cover 11, a plurality of base assemblies 13, reinforcing members, and a trip assembly 136.

[0052] The housing 12 and housing cover 11 form the appearance of the wiring circuit breaker 10 in an example of an embodiment of the present invention.

[0053] The shell 12 and the shell cover 11 can be joined together to form a polyhedron (e.g., a hexahedron) with an internal accommodating space.

[0054] Specifically, the housing 12 is joined to the housing cover 11, thereby creating an accommodating space inside the housing 12 and the housing cover 11. The joining can be achieved by fastening components such as bolts, nuts, and screws.

[0055] The housing 12 and housing cover 11 also include other components that fasten the housing 12 and housing cover 11 to each other by means of fastening members (e.g., holes for bolts or screws to be inserted, slots for nuts to be inserted, etc.).

[0056] The receiving space formed by the combination of the housing 12 and the housing cover 11 can accommodate a plurality of base assemblies 13.

[0057] The housing 12 can be formed in the shape of a box with an opening on one side (the top surface in the attached figure) and an internal accommodating space.

[0058] The housing 12 has a bottom 121. For example, the bottom 121 refers to the base of the box.

[0059] The bottom 121 is formed in a plate shape (see reference). Figure 4 ).

[0060] Specifically, the bottom 121 is in one direction (e.g., Figure 4 It has a predefined width in the x-direction (e.g., in the x-direction), and in the other direction (e.g., Figure 4 It has a predetermined length in the y-direction and in another direction (e.g., Figure 4 The z-direction has a pre-defined thickness. Here, another direction refers to a direction that is orthogonal to the horizontal relative to one direction, and yet another direction refers to a direction that is orthogonal to the vertical relative to one direction.

[0061] Depending on the user's needs, the bottom 121 can be formed with bends, steps, holes, grooves, etc.

[0062] In addition, the housing 12 has a side portion 122, a side portion 123, a side wall portion 124, and a side wall portion 125.

[0063] For example, one side portion 122, the other side portion 123, one side wall portion 124, and the other side wall portion 125 represent the side panels of the box.

[0064] One side portion 122, another side portion 123, one side wall portion 124 and another side wall portion 125 are formed along the edge of the bottom 121 in a direction orthogonal to the bottom 121.

[0065] One side portion 122 and the other side portion 123 are configured to be separated by a predetermined distance and face each other.

[0066] One side portion 122 and the other side portion 123 each have one end and another end. One end and the other end are opposite to each other.

[0067] A plurality of side openings 122h are formed between one end 1221 and the other end 1222 of one side portion 122 (see reference). Figure 4 ).

[0068] Additionally, a plurality of openings 123h extending through the other side portion 123 are formed between one end 1231 and the other end 1232 of the other side portion 123 (see reference). Figure 4 ).

[0069] The opening 122h on one side or the opening 123h on the other side is provided with a terminal that is connected to the power supply side or the load side.

[0070] The interior and exterior of the housing 12 are electrically connected through either the opening 122h on one side or the opening 123h on the other side. This connection is achieved by an energized portion 138 penetrating both the interior and exterior of the housing 12 and being integrated into the housing 12.

[0071] One side wall portion 124 and the other side wall portion 125 are configured to be separated by a predetermined distance and face each other.

[0072] Each of the side wall portion 124 and the other side wall portion 125 includes one end and another end. The one end and the other end are opposite to each other.

[0073] One side wall portion 124 and the other side wall portion 125 are each formed in a plate shape (see reference). Figure 4 ).

[0074] Specifically, one side wall portion 124 and the other side wall portion 125 are respectively formed in the form of plates having a predetermined length (length in the y direction in the figure), a predetermined thickness (length in the x direction in the figure), and a predetermined width (length in the z direction in the figure).

[0075] One side portion 122, the other side portion 123, one side wall portion 124 and the other side wall portion 125 are connected to each other.

[0076] Specifically, one end 1221 of one side portion 122 is connected to one end 1241 of one side wall portion 124, and the other end 1222 of one side portion 122 is connected to one end 1251 of another side wall portion 125.

[0077] Furthermore, one end 1231 of the other side portion 123 is connected to the other end 1242 of the side wall portion 124, and the other end 1232 of the other side portion 123 is connected to the other end 1252 of the other side wall portion 125.

[0078] The accommodating space of the housing 12 refers to the space surrounded by the bottom 121, one side portion 122, the other side portion 123, one side wall portion 124, and the other side wall portion 125.

[0079] The bottom 121, one side 122, the other side 123, one side wall 124, and the other side wall 125 can be integrally formed.

[0080] On the other hand, the housing 12 is formed of an insulating material such as plastic or synthetic resin. Therefore, it can prevent safety accidents that may occur due to arbitrary current flow through the housing 12.

[0081] The housing cover 11 serves to cover the housing 12. Through the housing cover 11, the constituent elements disposed in the receiving space of the housing 12 (e.g., the base assembly 13, etc.) are not exposed to the outside.

[0082] The housing cover 11 can be formed in the shape of a box with an opening on one side (the bottom surface in the attached figure) and an internal receiving space.

[0083] The upper plate of the housing cover 11 can be formed with bends, steps, holes, grooves, etc., according to the user's needs.

[0084] A through hole is formed in the upper plate of the housing cover 11. A handle 1351 is disposed in the through hole.

[0085] The housing cover 11 has a side panel formed along the edge of the upper plate in a direction orthogonal to the upper plate.

[0086] The side panel formed on the housing cover 11 can be connected to one side portion 122, another side portion 123, one side wall portion 124 and / or another side wall portion 125 formed on the housing 12. As mentioned above, the connection can be achieved by fastening members.

[0087] The housing 12 contains components for cutting off power and extinguishing the generated arc when an abnormal current (fault current) occurs.

[0088] Specifically, a plurality of base assemblies 13 are accommodated in the receiving space of the housing 12. That is, a plurality of base assemblies 13 are disposed in the receiving space of the housing 12. Figure 2 and Figure 4 Three base components 13a, 13b, and 13c are shown.

[0089] Figure 2 and Figure 4 The plurality of base assemblies 13 shown include a first base assembly 13a, a second base assembly 13b, and a third base assembly 13c. The first base assembly 13a is disposed on one side wall 124 of the housing 12, the second base assembly 13b is disposed on one side of the first base assembly 13a, and the third base assembly 13c is disposed on the other side wall 125 of the housing 12. The second base assembly 13b is disposed between the first base assembly 13a and the third base assembly 13c.

[0090] Plural (e.g., such as) Figure 2 and Figure 4 Each of the three base assemblies 13 shown has the same or similar structure; however, any one of the plurality of base assemblies 13 (e.g., Figure 2 and Figure 4The base assembly 13b, located in the middle of the base assembly 13 shown, is equipped with a handle 1351.

[0091] Figure 3 This is a cross-sectional view of the base assembly with the handle attached. Figure 4 It is shown Figure 2 Drawings of the base assembly, reinforcing members, and housing. Figure 5 yes Figure 4 A perspective view of the base assembly is shown.

[0092] Reference Figures 2 to 5 Apart from the handle 1351 and the various components for mounting the handle 1351, the plurality of base assemblies 13 may all be formed in the same or similar structure.

[0093] Although Figure 2 and Figure 4 Three base assemblies 13a, 13b, and 13c are shown, but this is not a limitation. Base assembly 13 can be configured with four or more depending on the user's needs.

[0094] A plurality of base assemblies 13 are connected to each other. Each of the plurality of base assemblies 13 includes various constituent elements that enable the plurality of base assemblies 13 to be connected to each other.

[0095] Multiple base assemblies 13 are connected to each other and are simultaneously energized or de-energized.

[0096] Any one of the plurality of base assemblies 13 is equipped with a handle 1351 and various constituent elements for mounting the handle 1351.

[0097] By operating the handle 1351, the plurality of base assemblies 13 can be simultaneously energized or de-energized.

[0098] As mentioned above, the components and operating principles for connecting the plurality of base assemblies 13 to each other and simultaneously energizing or de-energizing them follow known techniques.

[0099] The base assembly 13 includes a base cover 131 and a fixed contact 132, a movable contact 133, an opening / closing mechanism 135, an arc-extinguishing part 134, and a tripping part 136 housed within the base cover 131. The tripping part 136 refers to... Figure 2 The tripping component 136 is shown.

[0100] The base cover 131 forms the appearance of the base assembly 13.

[0101] The base cover 131 may have an internal receiving space, and the base cover 131 may be formed in a polyhedral shape (e.g., a hexahedral shape). Each face of the polyhedron may be formed with bends, steps, holes, grooves, etc., according to the user's needs.

[0102] For ease of assembly of the constituent elements constituting the base assembly 13, the base cover 131 has a physically separate first base cover 1311 and a second base cover 1312.

[0103] The first base cover 1311 and the second base cover 1312 can be manufactured separately and then joined together. The joining can be achieved by fastening components such as bolts, nuts, and screws.

[0104] The first base cover 1311 and the second base cover 1312 also include other components that are fastened to each other by fastening members (e.g., holes for bolts or screws to be inserted, slots for nuts to be inserted, etc.).

[0105] The first base cover 1311 and the second base cover 1312 form the appearance of the base assembly 13. The first base cover 1311 may be configured, for example, on the left side, and the second base cover 1312 may be configured, for example, on the right side.

[0106] According to an example of an embodiment of the present invention, the first base cover 1311 and the second base cover 1312 can be formed symmetrically to each other. That is, the opposite sides of the first base cover 1311 and the second base cover 1312 can be formed with the same structure. Similarly, the opposite sides of the first base cover 1311 and the second base cover 1312 can be formed with the same structure.

[0107] Spaces are formed inside the first base cover 1311 and the second base cover 1312. The spaces are connected to each other when the first base cover 1311 and the second base cover 1312 are joined together. The spaces accommodate a fixed contact 132, a movable contact 133, an opening and closing mechanism 135, an arc extinguishing part 134, and a tripping part 136, etc.

[0108] For Figure 6 Description of the reinforcing members and base cover shown >

[0109] Figure 6 This is a perspective view showing the bottom surface of the first reinforcing member and the base assembly of the present invention. Figure 6 The bottom surface of the base assembly shown (which can also be referred to as "below") faces upwards.

[0110] Reference Figure 6 The base cover 131 includes a reinforcing member receiving portion 131a. In other words, a reinforcing member receiving portion 131a is formed on the base cover 131.

[0111] A reinforcing member receiving portion 131a is formed on the bottom surface of the base assembly 13 (specifically, the base cover 131).

[0112] The reinforcing member receiving part 131a receives the reinforcing member 14 (which may be named "first reinforcing member 14").

[0113] The first reinforcing member 14 will be described later; firstly, the structure accommodating the first reinforcing member 14 will be described. Figure 6 The reinforcing member receiving part 131a is shown in the figure.

[0114] The reinforcing member receiving part 131a is formed in the shape of a groove.

[0115] The reinforcing member receiving portion 131a extends from the bottom surface of the base cover 131 to the top surface. Figure 6 A groove shape is formed in the z-direction of the base cover 131. The reinforcing member receiving part 131a is recessed to a predetermined depth from the bottom surface of the base cover 131 to the top surface.

[0116] A reinforcing member receiving portion 131a is formed on the first base cover 1311 and the second base cover 1312. If the first base cover 1311 and the second base cover 1312 are joined (or assembled), a reinforcing member receiving portion 131a is formed.

[0117] In detail, the reinforcing member receiving portion 131a (which may be named "first reinforcing member receiving portion 1311a") formed on the bottom surface of the first base cover 1311 is formed in one direction of the first base cover 1311 (e.g., Figure 6 The end of the second base cover 1312 is opposite to the x-direction in the x-direction.

[0118] Furthermore, a reinforcing member receiving portion 131a (which may be named "second reinforcing member receiving portion 1312a") formed on the second base cover 1312 is formed on the bottom surface of the second base cover 1312, and is formed in one direction of the second base cover 1312 (e.g., Figure 6 The end of the first base cover 1311 facing the x-direction in the middle.

[0119] Additionally, the first reinforcing member receiving portion 1311a extends from the bottom surface of the first base cover 1311 to the top surface ( Figure 6 The first reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a are recessed to a predetermined length (depth) in the z-direction of the second base cover 1312. The second reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a are recessed to a predetermined length (depth) in the z-direction of the second base cover 1312. The depth (predetermined depth) of the recesses of the first reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a are the same.

[0120] That is, the reinforcing member receiving portion 131a includes a first reinforcing member receiving portion 1311a and a second reinforcing member receiving portion 1312a, and the reinforcing member receiving portion 131a is formed by the combination of the first reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a.

[0121] If the first base cover 1311 and the second base cover 1312 are combined (or assembled), the first reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a are combined to form a reinforcing member receiving portion 131a.

[0122] The reinforcing member receiving portion 131a in one direction (e.g., Figure 6 It has a predefined width in the x-direction (e.g., in the x-direction), and in the other direction (e.g., Figure 6 It has a predetermined length in the y-direction and in another direction (e.g., Figure 6 The z-direction has a pre-defined depth. Here, another direction refers to a direction that is orthogonal to the horizontal relative to one direction, and yet another direction refers to a direction that is orthogonal to the vertical relative to one direction.

[0123] The predetermined width, length, and depth of the first reinforcing member receiving portion 1311a are the same as the predetermined width, length, and depth of the second reinforcing member receiving portion 1312a, respectively. Thus, the first reinforcing member 14 is balanced and positioned within the reinforcing member receiving portion 131a. Furthermore, the force exerted on the first reinforcing member 14 by the electric arc emitted from the gap between the first base cover 1311 and the second base cover 1312 is evenly distributed to the first reinforcing member 14.

[0124] The preset width of the reinforcing member receiving portion 131a is the same as the sum of the preset widths of the first reinforcing member receiving portion 1311a and the second reinforcing member receiving portion 1312a. Furthermore, the preset length of the reinforcing member receiving portion 131a is the same as the preset length of either the first reinforcing member receiving portion 1311a or the second reinforcing member receiving portion 1312a. Also, the preset depth of the reinforcing member receiving portion 131a is the same as the preset depth of either the first reinforcing member receiving portion 1311a or the second reinforcing member receiving portion 1312a.

[0125] The width of the reinforcing member receiving portion 131a is less than the length of the predetermined portion. Specifically, as shown in the figure... Figure 6 As shown, the reinforcing member receiving portion 131a is in another direction (e.g., Figure 6 The length of the y-direction in the equation is much greater than that of one direction (e.g., Figure 6 The groove (recess) shape is formed with a width in the x-direction.

[0126] A plurality of reinforcing member receiving portions 131a may be formed on the bottom surface of the base cover 131.

[0127] For example, refer to Figure 6 If a groove (not marked) is formed in the middle of the bottom surface of the base cover 131, then two reinforcing member receiving portions 131a and 131b can be formed on the bottom surface of the base cover 131. The two reinforcing member receiving portions 131a and 131b are located in another direction (e.g., Figure 6 The separation along the y-direction is equivalent to the length of the groove.

[0128] exist Figure 6 In the reference numeral 131a, one of the two reinforcing member receiving portions 131a and 131b is designated. Reference numeral 1311a indicates a first reinforcing member receiving portion 1311a disposed in the first reinforcing member receiving portion 131a, and reference numeral 1312a indicates a second reinforcing member receiving portion 1312a disposed in the first reinforcing member receiving portion 131a. Furthermore, reference numeral 131b indicates the other of the two reinforcing member receiving portions 131a and 131b. Reference numeral 1311b indicates a first reinforcing member receiving portion 1311b disposed in the other reinforcing member receiving portion 131b, and reference numeral 1312b indicates a second reinforcing member receiving portion 1312b disposed in the other reinforcing member receiving portion 131b.

[0129] According to an example of an embodiment of the present invention, if there is no groove or the like on the bottom surface of the base cover 131, a reinforcing member receiving portion (131a or 131b) with uninterrupted connection can be formed on the bottom surface of the base cover 131.

[0130] A first reinforcing member 14 is disposed in the reinforcing member receiving portion 131a. In an example in which a plurality of reinforcing member receiving portions 131a and 131b are formed, first reinforcing members 141 and 142 are disposed in the plurality of reinforcing member receiving portions 131a and 131b respectively.

[0131] Reinforcing member receiving portions 131a and 131b are formed in each of the plurality of base assemblies 13 (specifically, base cover 131).

[0132] The wiring circuit breaker 10 of the present invention includes a first reinforcing member 14.

[0133] The first reinforcing member 14 is disposed (or housed) in the reinforcing member receiving portion 131a formed on the bottom surface of the base assembly 13 (specifically, the base cover 131).

[0134] Reference Figure 4The first reinforcing member 14 is disposed between the base assembly 13 and the housing 12. Specifically, the first reinforcing member 14 is disposed between the bottom surface of the base cover 131 and the inner surface of the bottom 121 of the housing 12.

[0135] If the first reinforcing member 14 is accommodated in the reinforcing member receiving portion 131a, the bottom surface of the base cover 131 and the inner surface of the bottom 121 of the housing 12 come into contact. Therefore, the inner surface of the bottom 121 of the housing 12 supports the first reinforcing member 14, preventing the first reinforcing member 14 from detaching from the reinforcing member receiving portion 131a, and ensuring that the first reinforcing member 14 is tightly adhered to the reinforcing member receiving portion 131a.

[0136] If a fault current (abnormal current) is applied to the wiring circuit breaker 10, the base assembly 13 connected to each phase will interrupt the fault current, and the heat and pressure generated will be discharged from the exhaust port.

[0137] As the interrupted current increases, the heat and pressure generated in each base assembly 13 increase proportionally to the magnitude of the interrupted current.

[0138] Typically, excessively high voltage applied to electrical equipment or insulators can cause abnormal phenomena such as insulation breakdown. Therefore, electrical equipment should be subjected to voltages within a range that will not cause insulation breakdown and that it can withstand. The limit of the applied voltage that such electrical equipment can withstand without being damaged by voltage is called the withstand voltage. Usually, the maximum voltage is called the insulation breakdown voltage, and the withstand voltage refers to the range of voltages lower than this insulation breakdown voltage.

[0139] Circuit breakers for wiring need to be equipped with a component that maintains the internal withstand voltage performance of the circuit breaker even after the power is cut off.

[0140] The first reinforcing member 14 serves to maintain the withstand voltage performance of the wiring circuit breaker 10.

[0141] The first reinforcing member 14 is formed in a shape corresponding to the shape of the reinforcing member receiving portion 131a. For example, if the first reinforcing member 14 is formed in the shape of a bar having a predetermined length in one direction, the reinforcing member receiving portion 131a is formed in the shape of a groove having a predetermined length in one direction corresponding to the shape of the first reinforcing member 14.

[0142] The first reinforcing member 14 is in one direction (e.g., Figure 6 It has a predefined width in the x-direction (e.g., in the x-direction), and in the other direction (e.g., Figure 6 It has a predetermined length in the y-direction and in another direction (e.g., Figure 6The z-direction has a pre-defined thickness. Here, another direction refers to a direction that is orthogonal to the horizontal relative to one direction, and yet another direction refers to a direction that is orthogonal to the vertical relative to one direction.

[0143] In order for the first reinforcing member 14 to be accommodated in the reinforcing member accommodating portion 131a, the predetermined width of the first reinforcing member 14 is equal to or less than the predetermined width of the reinforcing member accommodating portion 131a. Furthermore, the predetermined length of the first reinforcing member 14 is equal to or less than the predetermined length of the reinforcing member accommodating portion 131a.

[0144] However, the predetermined thickness of the first reinforcing member 14 is formed to be the same as the predetermined depth of the reinforcing member receiving portion 131a. When the first reinforcing member 14 is disposed in the reinforcing member receiving portion 131a, an adhesive may be applied to the reinforcing member receiving portion 131a (the bottom surface of the base cover 131).

[0145] For example, the adhesive can be a silicone adhesive with strong heat resistance and excellent electrical insulation. However, the adhesive is not limited to silicone adhesives, but can also be adhesives made of various other materials such as epoxy.

[0146] Even though an adhesive of a specified thickness is applied to the reinforcing member receiving portion 131a (the bottom surface of the base cover 131), the thickness of the first reinforcing member 14 is formed to be the same as the depth of the reinforcing member receiving portion 131a. This is to ensure that the inner surface of the bottom 121 of the housing 12 reliably supports the first reinforcing member 14 and that the first reinforcing member 14 is tightly bonded to the reinforcing member receiving portion 131a.

[0147] As mentioned above, the first reinforcing member 14 is formed in the shape of a bar.

[0148] Specifically, the predetermined width of the first reinforcing member 14 is smaller than the predetermined length. For example... Figure 6 As shown, the first reinforcing member 14 is formed in another direction (e.g., Figure 6 The length of the y-direction in the equation is much greater than that of one direction (e.g., Figure 6 The shape of the rod (in the x-direction).

[0149] The first reinforcing member 14 is formed of or includes melamine resin. Therefore, the first reinforcing member 14 has improved pressure resistance, arc extinguishing performance, and heat resistance.

[0150] In addition, the first reinforcing member 14 can be formed of synthetic resin to reduce production costs.

[0151] The first reinforcing member 14 is attached to the reinforcing member receiving portion 131a by an adhesive.

[0152] After adhesive is applied to the bottom surface of the base cover 131, which corresponds to the reinforcing member receiving portion 131a, the first reinforcing member 14 is attached to the reinforcing member receiving portion 131a. The base assembly 13 with the first reinforcing member 14 attached is inserted into (or assembled into) the housing 12.

[0153] For Figure 7 and Figure 8 Description of the reinforcing members and base cover shown in the image >

[0154] Figure 7 and Figure 8 This is a perspective view showing the bottom surface of the second reinforcing member and the base assembly of the present invention. Figure 7 and Figure 8 The bottom surface of the base assembly shown in the image faces upwards.

[0155] Reference Figure 7 and Figure 8 The base cover 131 includes a reinforcing member receiving portion ( Figure 7 P1 in Figure 8 (131c in the middle). In other words, a reinforcing member receiving portion P1, 131c is formed in the base cover 131.

[0156] The reinforcing member receiving portions P1 and 131c are formed on the bottom surface of the base assembly 13 (specifically, the base cover 131).

[0157] Figure 7 and Figure 8 The reinforcing member receiving parts P1 and 131c shown in the figure receive the reinforcing member 15 (which can be named "second reinforcing member 15").

[0158] The second reinforcing member 15 will be explained later; firstly, regarding... Figure 7 and Figure 8 The reinforcing member receiving portions P1 and 131c that accommodate the second reinforcing member 15 will be described.

[0159] Figure 7 The reinforcing member receiving part P shown is... Figure 8 The same characteristic of the reinforcing member receiving portion 131c shown is that the reinforcing member receiving portions P1 and 131c have a square or rectangular planar shape. Here, planar shape refers to the shape from top to bottom ( Figure 7 and Figure 8 (Observe the shape of the reinforcing member receiving parts P1 and 131c in the z direction)

[0160] on the contrary, Figure 7 The reinforcing member receiving part P shown is... Figure 8 The different features of the reinforcing member receiving portion 131c shown are, Figure 7 The reinforcing member receiving portion P shown does not have a predetermined depth, but Figure 8 The reinforcing member receiving portion 131c shown is formed as a groove (recess) with a predetermined depth.

[0161] Figure 7 The reinforcing member receiving portion P shown includes the following characteristics 1) to 5).

[0162] 1) The reinforcing member receiving portion P refers to a part of the bottom surface of the base cover 131. That is, the flat bottom surface of the base cover 131 without bends, grooves or steps becomes the reinforcing member receiving portion P, and the second reinforcing member 15 is disposed in the reinforcing member receiving portion (flat bottom surface) P.

[0163] 2) The bottom surface of the base cover 131 where the second reinforcing member 15 is disposed (i.e., the reinforcing member receiving part P) refers to the bottom surface of the base cover 131 that is in contact with the inner surface of the bottom 121 of the housing 12 when the second reinforcing member 15 is not present.

[0164] 3) The size of the reinforcing member receiving portion P is the same as the size of the planar shape of the second reinforcing member 15. Here, planar shape refers to the shape from top to bottom ( Figure 7 and Figure 8 The shape of the second reinforcing member 15 is observed when viewing it in the z-direction. The size of the reinforcing member receiving portion P can be equal to the size in the base cover 131 corresponding to the contact between the bottom surface of the reinforcing member receiving portion P and the inner surface of the bottom 121 of the housing 12 without the second reinforcing member 15. Therefore, the pressure resistance of the base assembly 13 is significantly improved.

[0165] 4) The reinforcing member receiving part P can be formed in a square or rectangular shape, and may include arc shape or curved part in some areas.

[0166] 5) The reinforcing member housing P will not be like the aforementioned Figure 6 and the following Figure 8 As shown in the diagram, the reinforcing member receiving portion extends from the bottom surface of the base cover 131 to the top surface. Figure 6 and Figure 8 A concave shape is formed in the z-direction. Therefore, it improves the ease of manufacturing and reduces manufacturing costs.

[0167] Figure 8 The reinforcing member receiving portion 131c shown is formed from the bottom surface of the base cover 131 to the top surface. Figure 8 (in the z direction). Specifically, the reinforcing member receiving portion 131c is formed in the shape of a groove that is recessed to a predetermined depth from the bottom surface of the base cover 131 to the top surface.

[0168] The reinforcing member receiving portions P1 and 131c are formed on the first base cover 1311 and the second base cover 1312. If the first base cover 1311 and the second base cover 1312 are joined (or assembled), a reinforcing member receiving portion P1 and 131c is formed.

[0169] Specifically, the reinforcing member receiving portion formed in the first base cover 1311 ( Figure 7 No marker was assigned in the middle. Figure 8 1311c (which may be named the "first reinforcing member receiving portion") is formed on the bottom surface of the first base cover 1311, and includes the first base cover 1311 facing in one direction (e.g., Figure 7 and Figure 8 The end of the second base cover 1312 is opposite to the x-direction in the x-direction.

[0170] Furthermore, the reinforcing member receiving portion formed in the second base cover 1312 ( Figure 7 No marker was assigned in the middle. Figure 8 1312c (which may be named the "second reinforcing member receiving portion") is formed on the bottom surface of the second base cover 1312, and includes the second base cover 1312 facing in one direction (e.g., Figure 7 and Figure 8 The end of the first base cover 1311 facing the x-direction in the middle.

[0171] Figure 8 The first reinforcing member receiving portion 1311c shown extends from the bottom surface of the first base cover 1311 to the top surface (towards) Figure 8 The first reinforcing member receiving portion 1311c and the second reinforcing member receiving portion 1312c are recessed to a predetermined length (depth) in the z-direction of the second base cover 1312. The second reinforcing member receiving portion 1311c and the second reinforcing member receiving portion 1312c are recessed to a predetermined length (depth) in the z-direction of the second base cover 1312. The depth (predetermined depth) of the recesses of the first reinforcing member receiving portion 1311c and the second reinforcing member receiving portion 1312c are the same.

[0172] Figure 7 and Figure 8 The reinforcing member receiving portions P1 and 131c shown include a first reinforcing member receiving portion ( Figure 7 No marker was assigned in the middle. Figure 8 1311c) and the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 In 1312c), the reinforcing member receiving parts P1 and 131c pass through the first reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 1311c) and the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 It is formed by the combination of 1312c in the middle.

[0173] If the first base cover 1311 and the second base cover 1312 are combined (or assembled), the first reinforcing member receiving portion ( Figure 7 No marker was assigned in the middle. Figure 8 1311c) and the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 1312c) is combined with and forms a reinforcing member receiving part P1, 131c.

[0174] Figure 7 and Figure 8 The reinforcing member receiving portions P1 and 131c shown are in one direction (e.g., Figure 7 and Figure 8 It has a predefined width in the x-direction (e.g., in the x-direction), and in the other direction (e.g., Figure 7 and Figure 8 The other direction has a predetermined length in the y-direction. Here, the other direction refers to a direction that is horizontally orthogonal to the first direction.

[0175] and, Figure 8 The reinforcing member receiving portion 131c shown is in another direction (e.g., Figure 8 The z-direction has a predefined depth. Here, another direction refers to a direction that is vertically orthogonal to the first direction.

[0176] Figure 7 and Figure 8 The first reinforcing member receiving part shown ( Figure 7 No marker was assigned in the middle. Figure 8 The preset width and length of 1311c in the middle are respectively related to the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 The preset width and length of 1312c in [the original text] are the same. Furthermore, Figure 8 The predetermined depth of the first reinforcing member receiving portion 1311c shown is the same as the predetermined depth of the second reinforcing member receiving portion 1312c. Thus, the second reinforcing member 15 is evenly positioned within the reinforcing member receiving portions P1 and 131c. Furthermore, the force exerted on the second reinforcing member 15 by the electric arc exiting from the gap between the first base cover 1311 and the second base cover 1312 is evenly distributed to the second reinforcing member 15.

[0177] Figure 7 and Figure 8 The pre-set width of the reinforcing member receiving portions P1 and 131c shown is the same as that of the first reinforcing member receiving portion ( Figure 7 No marker was assigned in the middle. Figure 8 The pre-set width of 1311c and the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 The sum of the preset widths of 1312c in the first reinforcing member receiving part (P1, 131c) is the same. Furthermore, the preset lengths of the reinforcing member receiving parts P1 and 131c are the same as those of the first reinforcing member receiving part (P1, 131c). Figure 7 No marker was assigned in the middle. Figure 8 1311c) or the second reinforcing member receiving part ( Figure 7 No marker was assigned in the middle. Figure 8 The length of 1312c is the same as the preset length.

[0178] and, Figure 8 The preset depth of the reinforcing member receiving portion 131c shown is the same as the preset depth of the first reinforcing member receiving portion 1311c or the second reinforcing member receiving portion 1312c.

[0179] Figure 7 The predetermined width of the reinforcing member receiving portion P1 shown can be the same as the predetermined length, which means that the shape of the reinforcing member receiving portion P1 is square. Furthermore, the predetermined width of the reinforcing member receiving portion P1 can be less than the predetermined length, which means that the shape of the reinforcing member receiving portion P1 is rectangular.

[0180] Figure 8 The predetermined width of the reinforcing member receiving portion 131c shown can be the same as the predetermined length, which means that the reinforcing member receiving portion 131c is formed into a groove shape with a predetermined depth and a square planar shape. Furthermore, the predetermined width of the reinforcing member receiving portion 131c can be less than the predetermined length, which means that the reinforcing member receiving portion 131c is formed into a groove shape with a predetermined depth and a rectangular planar shape.

[0181] A plurality of [items] can be formed on the bottom surface of the base cover 131. Figure 7 or Figure 8 The reinforcing member receiving part shown ( Figure 7 P1 and P2 in the middle Figure 8 (131c, 131d).

[0182] For example, refer to Figure 7 or Figure 8 If a groove (not marked) is formed in the middle of the bottom surface of the base cover 131, then two reinforcing member receiving portions can be formed on the bottom surface of the base cover 131. Figure 7 P1 and P2 in the middle Figure 8 131c and 131d in the text). The two reinforcing member receiving parts ( Figure 7 P1 and P2 in the middle Figure 8In the other direction (e.g., 131c, 131d), Figure 7 and Figure 8 The separation along the y-direction is equivalent to the length of the groove.

[0183] exist Figure 7 In the figure, reference numeral P1 indicates one of the two reinforcing member receiving parts, and reference numeral P2 indicates the other of the two reinforcing member receiving parts.

[0184] exist Figure 8 In the reference numeral 131c, one of the two reinforcing member receiving portions is indicated. Reference numeral 1311c indicates a first reinforcing member receiving portion 131c, and reference numeral 1312c indicates a second reinforcing member receiving portion 131c. Furthermore, reference numeral 131d indicates the other of the two reinforcing member receiving portions. Reference numeral 1311d indicates a first reinforcing member receiving portion 131d, and reference numeral 1312d indicates a second reinforcing member receiving portion 131d.

[0185] According to an example of an embodiment of the present invention, if there is no groove or the like on the bottom surface of the base cover 131, a reinforcing member receiving portion with and without interruption of connection can be formed on the bottom surface of the base cover 131. Figure 7 P1 or P2 in the middle, Figure 8 (131c or 131d in the original text).

[0186] A second reinforcing member 15 is disposed in the reinforcing member receiving portions P1 and 131c. A plurality of reinforcing member receiving portions are formed. Figure 7 P1 and P2 in the middle Figure 8 In the example of the implementation state of 131c and 131d, in the plurality of reinforcing member receiving parts ( Figure 7 P1 and P2 in the middle Figure 8 Each of the reinforcing member receiving portions in 131c and 131d is provided with a second reinforcing member 151 and 152.

[0187] The reinforcing member receiving portions P1 and 131c are formed in each of the plurality of base assemblies 13 (specifically, base cover 131).

[0188] The wiring circuit breaker 10 of the present invention includes a second reinforcing member 15. The second reinforcing member 15 is disposed in... Figure 7 and Figure 8 The reinforcing member receiving parts P1 and 131c are shown.

[0189] The second reinforcing member 15 is disposed (or housed) in the reinforcing member receiving portion P1, 131c formed on the bottom surface of the base assembly 13 (specifically, the base cover 131).

[0190] Reference Figure 4 The second reinforcing member 15 is disposed between the base assembly 13 and the housing 12. Specifically, the second reinforcing member 15 is disposed between the bottom surface of the base cover 131 and the inner surface of the bottom 121 of the housing 12.

[0191] If the second reinforcing member 15 is configured in Figure 7 In the reinforcing member receiving portion P1 shown, the top surface of the second reinforcing member 15 contacts the bottom surface of the base cover 131, and the bottom surface of the second reinforcing member 15 contacts the inner surface of the bottom 121 of the housing 12. Thus, the inner surface of the bottom 121 of the housing 12 supports the second reinforcing member 15, and the second reinforcing member 15 is tightly bonded to the reinforcing member receiving portion P1.

[0192] If the second reinforcing member 15 is accommodated in Figure 8 In the reinforcing member receiving portion 131c shown, the bottom surface of the base cover 131 contacts the inner surface of the bottom 121 of the housing 12. Thus, the inner surface of the bottom 121 of the housing 12 supports the second reinforcing member 15, preventing the second reinforcing member 15 from detaching from the reinforcing member receiving portion 131c, and ensuring that the second reinforcing member 15 is tightly adhered to the reinforcing member receiving portion 131c.

[0193] The second reinforcing member 15, like the first reinforcing member 14, serves to maintain the withstand voltage performance of the wiring circuit breaker 10.

[0194] The second reinforcing member 15 is in conjunction with Figure 7 The shape of the reinforcing member receiving portion P1 shown corresponds to the shape of the form. For example, if the reinforcing member receiving portion P1 is formed as a square or rectangular plane, the second reinforcing member 15 is formed as a square or rectangular plate with a predetermined thickness.

[0195] The second reinforcing member 15 is in conjunction with Figure 8 The shape formation corresponds to the shape of the reinforcing member receiving portion 131c shown. For example, when the reinforcing member receiving portion 131c is formed as a groove shape having a predetermined depth and a square or rectangular planar shape, the second reinforcing member 15 is formed as a plate shape having a predetermined thickness to be received in the reinforcing member receiving portion 131c and a square or rectangular planar shape.

[0196] The second reinforcing member 15 is in one direction (e.g., Figure 7 and Figure 8 It has a predefined width in the x-direction (e.g., in the x-direction), and in the other direction (e.g., Figure 7and Figure 8 It has a predetermined length in the y-direction and in another direction (e.g., Figure 7 and Figure 8 The z-direction has a pre-defined thickness. Here, another direction refers to a direction that is orthogonal to the horizontal relative to one direction, and yet another direction refers to a direction that is orthogonal to the vertical relative to one direction.

[0197] The pre-set width and length of the second reinforcing member 15 are consistent with... Figure 7 The width and length of the reinforcing member receiving part P1 shown are the same as the preset width.

[0198] On the other hand, in order for the second reinforcing member 15 to be accommodated in Figure 8 The reinforcing member receiving portion 131c shown has a predetermined width of the second reinforcing member 15 that is equal to or less than the predetermined width of the reinforcing member receiving portion 131c. Furthermore, the predetermined length of the second reinforcing member 15 is equal to or less than the predetermined length of the reinforcing member receiving portion 131c.

[0199] However, the predetermined thickness of the second reinforcing member 15 is formed to be consistent with... Figure 8 The depth of the reinforcing member receiving portion 131c shown is the same as the preset depth. When the second reinforcing member 15 is disposed in the reinforcing member receiving portion 131c, adhesive may be applied to the reinforcing member receiving portion 131c (the bottom surface of the base cover 131).

[0200] For example, the adhesive can be a silicone adhesive with strong heat resistance and excellent electrical insulation. However, the adhesive is not limited to silicone adhesives, but can also be adhesives made of various other materials such as epoxy.

[0201] Even though an adhesive of a specified thickness is applied to the reinforcing member receiving portion 131c (the bottom surface of the base cover 131), the thickness of the second reinforcing member 15 is formed to be the same as the depth of the reinforcing member receiving portion 131c. This is to ensure that the inner surface of the bottom 121 of the housing 12 reliably supports the second reinforcing member 15 and that the second reinforcing member 15 is tightly bonded to the reinforcing member receiving portion 131c.

[0202] The second reinforcing member 15 is formed of or includes melamine resin. Therefore, the second reinforcing member 15 has improved pressure resistance, arc extinguishing performance, and heat resistance.

[0203] In addition, the second reinforcing member 15 can be formed of synthetic resin to reduce production costs.

[0204] The second reinforcing member 15 is attached by adhesive. Figure 7 or Figure 8 The reinforcing member receiving parts P1 and 131c are shown.

[0205] After the adhesive is applied to the bottom surface of the base cover 131, which corresponds to the reinforcing member receiving portion P1, 131c, the second reinforcing member 15 is attached to the reinforcing member receiving portion P1, 131c. The base assembly 13 with the second reinforcing member 15 attached is inserted into (or assembled into) the housing 12.

[0206] For Figure 9 and Figure 10 Description of the reinforcing members and base cover shown >

[0207] Figure 9 This is a perspective view showing the bottom surface of the third reinforcing member and the base assembly of the present invention. Figure 10 It is a simplified representation. Figure 9 The cross-sectional view of the third reinforcing member and the base cover is shown. Figure 9 The bottom surface of the base assembly shown faces upwards. Figure 10 The third reinforcing member shown is along... Figure 9 The AA line cuts through the cross section of the third reinforcing member.

[0208] Reference Figure 10 The base cover 131 includes a reinforcing member receiving portion 131e. In other words, a reinforcing member receiving portion 131e is formed on the base cover 131.

[0209] The reinforcing member receiving portion 131e is formed inside the bottom surface of the base assembly 13 (specifically, the base cover 131).

[0210] The reinforcing member receiving part 131e receives the reinforcing member 16 (which may be named "third reinforcing member").

[0211] The third reinforcing member 16 will be explained later; firstly, let's discuss... Figure 10 The reinforcing member receiving portion 131e that accommodates the third reinforcing member 16 will be described.

[0212] A reinforcing member receiving portion 131e is formed on the first base cover 1311 and the second base cover 1312. If the first base cover 1311 and the second base cover 1312 are joined (or assembled), a reinforcing member receiving portion 131e is formed.

[0213] A reinforcing member receiving portion 1311e (which may be referred to as the "first reinforcing member receiving portion") is formed on the end of the bottom surface of the first base cover 1311. Specifically, the first reinforcing member receiving portion 1311e is formed on the side of the end of the bottom surface of the first base cover 1311. More specifically, the first reinforcing member receiving portion 1311e is formed in one direction (e.g., on the end of the bottom surface of the first base cover 1311) Figure 9 The side facing the end of the bottom surface of the second base cover 1312 is opposite to the x-direction in the middle.

[0214] Furthermore, a reinforcing member receiving portion 1312e (which may be referred to as the "second reinforcing member receiving portion") is formed on the end of the bottom surface of the second base cover 1312. Specifically, the second reinforcing member receiving portion 1312e is formed on the side of the end of the bottom surface of the second base cover 1312. More specifically, the second reinforcing member receiving portion 1312e is formed in one direction (e.g., on the end of the bottom surface of the second base cover 1312) of the end of the bottom surface of the second base cover 1312. Figure 9 (in the x direction) the side facing the end of the bottom surface of the first base cover 1311.

[0215] If the first base cover 1311 and the second base cover 1312 are combined (or assembled), the side of the bottom surface of the first base cover 1311 where the end of the first reinforcing member receiving portion 1311e is formed faces each other, as does the side of the bottom surface of the second base cover 1312 where the end of the second reinforcing member receiving portion 1312e is formed.

[0216] Therefore, the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e face each other and are formed in corresponding shapes.

[0217] If the first base cover 1311 and the second base cover 1312 are combined (or assembled), the first reinforcing member receiving portion 1311e is disposed inside the bottom surface of the first base cover 1311, and the second reinforcing member receiving portion 1312e is disposed inside the bottom surface of the second base cover 1312.

[0218] The first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e are formed in the shape of a groove with a predetermined depth.

[0219] Specifically, the first reinforcing member receiving portion 1311e extends from the side of the end of the bottom surface of the first base cover 1311 in one direction ( Figure 9The first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e are recessed to a predetermined depth in the x-direction of the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e, respectively, and are recessed to a predetermined depth in the opposite direction of the x-direction. Here, when the cross-sectional shapes of the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e are both semicircular, the predetermined depth represents the radius of the semicircle.

[0220] When the cross-sectional shapes of the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e are both semi-circular, the radii of the semi-circles are the same.

[0221] If the first base cover 1311 and the second base cover 1312 are combined (or assembled), thereby combining the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e, a reinforcing member receiving portion 131e with a circular cross-sectional shape is formed. Therefore, the effect of the electric arc on the first base cover 1311, the second base cover 1312 and the third reinforcing member 16 becomes uniform.

[0222] In conclusion, Figure 10 The reinforcing member receiving portion 131e shown includes a first reinforcing member receiving portion 1311e and a second reinforcing member receiving portion 1312e, which are formed by the combination of the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e.

[0223] That is, if the first base cover 1311 and the second base cover 1312 are combined (or assembled), the first reinforcing member receiving portion 1311e and the second reinforcing member receiving portion 1312e are combined to form a reinforcing member receiving portion 131e.

[0224] Through the combination of the first base cover 1311 and the second base cover 1312, the reinforcing member receiving portion 131e is formed inside the bottom surface of the base cover 131, and along the length direction of the base cover 131 ( Figure 9 It is formed in the y-direction.

[0225] The first reinforcing member receiving portion 1311e is formed along the end of the bottom surface of the first base cover 1311. Specifically, the first reinforcing member receiving portion 1311e is located in... Figure 9 It is formed along the end of the bottom surface of the first base cover 1311 in the y direction.

[0226] Furthermore, the second reinforcing member receiving portion 1312e is formed along the end of the bottom surface of the second base cover 1312. Specifically, the second reinforcing member receiving portion 1312e is located in... Figure 9It is formed along the end of the bottom surface of the second base cover 1312 in the y direction.

[0227] The reinforcing member receiving portion 131e can be along the length direction of the base cover 131 ( Figure 9 The y-direction of the base cover 131 is formed on the entire bottom surface of the base cover 131 and along the height direction of the base cover 131. Figure 9 (in the z direction) is formed on a part of one side of the base cover 131.

[0228] The first reinforcing member receiving part 1311e can be along... Figure 9 The y-direction is formed along the entire end of the bottom surface of the first base cover 1311 and along... Figure 9 The z-direction is formed to a portion of the end of one side of the first base cover 1311.

[0229] Furthermore, the second reinforcing member receiving portion 1312e can be along... Figure 9 The y-direction in the middle is formed along the entire end of the bottom surface of the second base cover 1312 and along... Figure 9 The z-direction is formed to a portion of the end of one side of the second base cover 1312.

[0230] Alternatively, according to an example of an embodiment of the present invention, the reinforcing member receiving portion 131e may be along the length direction of the base cover 131 ( Figure 9 The y-direction (in the base cover 131) is formed only on the entire bottom surface of the base cover 131.

[0231] The first reinforcing member receiving part 1311e can be along... Figure 9 The y-direction is formed long and narrowly only at the entire end of the bottom surface of the first base cover 1311.

[0232] Furthermore, the second reinforcing member receiving portion 1312e can be along... Figure 9 The y-direction is formed long only at the entire end of the bottom surface of the second base cover 1312.

[0233] The reinforcing member receiving portion 131e can be formed in each of the plurality of base assemblies 13 (specifically, base cover 131).

[0234] The wiring circuit breaker 10 of the present invention includes a third reinforcing member 16. The third reinforcing member 16 is disposed in... Figure 10 The reinforcing member receiving part 131e is shown.

[0235] Reference Figure 10 The third reinforcing member 16 is disposed (or housed) in the reinforcing member receiving portion 131e formed inside the bottom surface of the base cover 131.

[0236] The third reinforcing member 16 is disposed between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover 1312, and fills any gaps that may be generated between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover 1312, thereby preventing foreign objects from being discharged from the gaps and keeping the pressure resistance of the base assembly 13 constant.

[0237] The third reinforcing member 16 serves the same function as the first reinforcing member 14.

[0238] The third reinforcing member 16 is formed in the shape of a rod with a predetermined length, and may include a curved shape. Specifically, such as Figure 9 As shown, the third reinforcing member 16 is in Figure 9 The rod is formed with a long length in the y-direction. Furthermore, the third reinforcing member 16 may include a partially bent (or folded) shape.

[0239] The third reinforcing member 16 is formed in a shape corresponding to the shape of the reinforcing member receiving portion 131e.

[0240] For example, when the cross-sectional shape of the reinforcing member receiving portion 131e is a circle with a predetermined diameter, the cross-sectional shape of the third reinforcing member 16 is formed as a circle with a predetermined diameter.

[0241] When the cross-sectional shape of the third reinforcing member 16 and the reinforcing member receiving portion 131e is circular, the diameter of the third reinforcing member 16 can be equal to or greater than the diameter of the reinforcing member receiving portion 131e. Thus, the third reinforcing member 16 fills the gap that may be generated between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover 1312.

[0242] Although Figure 10 A space is shown between the third reinforcing member 16 and the reinforcing member receiving portion 131e, but Figure 10 This is to show that the third reinforcing member 16 is accommodated in the reinforcing member accommodating portion 131e, and that the space does not actually exist.

[0243] The length direction of the third reinforcing member 16 ( Figure 9 The shape in the y-direction of the reinforcing member receiving part 131e is related to the length direction of the reinforcing member receiving part 131e. Figure 9 The shape in the y-direction or the length direction of the bottom surface of the base cover 131 (in the y-direction). Figure 9 The shape corresponds to the shape in the y-direction.

[0244] Therefore, if the bottom surface of the base cover 131 is in the length direction ( Figure 9 If the third reinforcing member 16 has a curved (or bent) shape in the y-direction, then the length direction of the third reinforcing member 16 ( Figure 9 The shape in the y-direction and the length direction of the reinforcing member receiving part 131e (in the y-direction) Figure 9 The shape in the y-direction also has a curved (or bent) shape at the corresponding position.

[0245] Additionally, in the reinforcing member receiving portion 131e along the length direction of the base cover 131 ( Figure 9 The y-direction of the base cover 131 is formed on the entire bottom surface of the base cover 131 and along the height direction of the base cover 131. Figure 9 When the third reinforcing member 16 and the reinforcing member receiving portion 131e are formed to a part of one side of the base cover 131 in the z direction, the shapes of the third reinforcing member 16 and the reinforcing member receiving portion 131e correspond to the shapes of the entire bottom surface and one side surface of the base cover 131.

[0246] The third reinforcing member 16 is formed of or includes melamine resin. Therefore, the third reinforcing member 16 has improved pressure resistance, arc extinguishing performance, and heat resistance.

[0247] In addition, the third reinforcing member 16 can be formed of synthetic resin to reduce production costs.

[0248] The third reinforcing member 16 is attached by adhesive. Figure 10 The reinforcing member receiving part 131e is shown.

[0249] For example, the adhesive can be a silicone adhesive with strong heat resistance and excellent electrical insulation. However, the adhesive is not limited to silicone adhesives, but can also be adhesives made of various other materials such as epoxy.

[0250] After applying adhesive to the inner surface of the reinforcing member receiving portion 131e and / or the outer surface of the third reinforcing member 16, the third reinforcing member 16 is attached to the reinforcing member receiving portion 131e. The base assembly 13 with the third reinforcing member 16 attached is inserted into (or assembled into) the housing 12.

[0251] Specifically, before the first base cover 1311 and the second base cover 1312 are joined (or assembled), an adhesive is applied to the inner surface of the first reinforcing member receiving portion 1311e and / or the inner surface of the second reinforcing member receiving portion 1312e and / or the outer surface of the third reinforcing member 16. Then, the third reinforcing member 16 is disposed in the first reinforcing member receiving portion 1311e or the second reinforcing member receiving portion 1312e. Afterwards, the first base cover 1311 and the second base cover 1312 are joined (or assembled) using fastening components (bolts, nuts, screws, etc.).

[0252] For Figure 11 Description of the reinforcing members and base cover shown >

[0253] Figure 11 This is a simplified cross-sectional view showing the fourth reinforcing member and the base cover of the present invention. Reference will be made during the description of the fourth reinforcing member 16′. Figure 9 .

[0254] Figure 11 The cross section of the fourth reinforcing member 16′ shown can be considered as being parallel to the section along the line. Figure 9 Cut along the AA direction Figure 9 The cross-section is the same as that of the third reinforcing member 16 shown.

[0255] The wiring circuit breaker 10 of the present invention includes a fourth reinforcing member 16'.

[0256] A fourth reinforcing member 16′ is disposed between the first base cover 1311 and the second base cover 1312. Specifically, the fourth reinforcing member 16′ is disposed between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover. Thus, the fourth reinforcing member 16′ fills any gap that may form between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover, thereby preventing foreign objects from escaping from the gap and maintaining the pressure resistance of the base assembly 13 at a constant level.

[0257] The fourth reinforcing member 16′ serves the same function as the first reinforcing member.

[0258] The fourth reinforcing member 16' can be formed in the shape of a rod with a predetermined length, and includes a curved shape. Specifically, as... Figure 9 As shown, the fourth reinforcing member 16' is in Figure 9 The fourth reinforcing member 16′ is formed by a long rod shape along the y-direction. Furthermore, the fourth reinforcing member 16′ may partially include a curved (or bent) shape.

[0259] The fourth reinforcing member 16′ includes a first groove 16′a and a second groove 16′b.

[0260] The first groove 16′a and the second groove 16′b can be along the length direction of the fourth reinforcing member 16′ (e.g., Figure 9 (in the y direction) is formed on the outer surface of the fourth reinforcing member 16′.

[0261] The first groove 16′a and the second groove 16′b are recessed grooves facing each other. The first groove 16′a and the second groove 16′b have the same predetermined depth.

[0262] The first groove 16′a is formed by recessing from the first outer side of the fourth reinforcing member 16′ towards the center of the cross section, and the second groove 16′b is formed by recessing from the second outer side of the fourth reinforcing member 16′ towards the center of the cross section. The first outer side and the second outer side refer to the opposite outer sides of the fourth reinforcing member 16′.

[0263] The first slot 16′a faces one direction (for example, Figure 9 The second groove 16′b is formed by a depression in the opposite direction to the x-direction in the middle, and the second groove faces one direction (e.g., the x-direction in the middle). Figure 9 The first groove 16′a and the second groove 16′b are formed by a recess in the x-direction. The first groove 16′a and the second groove 16′b are configured in one direction (e.g., in the x-direction). Figure 9 At the center of the x-axis (in the x-direction).

[0264] Reference Figure 11 The cross-sectional shape of the first groove 16′a and the second groove 16′b is polygonal. The cross-sectional shape of the first groove 16′a and the second groove 16′b is not limited to the polygonal shape, and can be formed as a semicircle or a semiellipse.

[0265] The bottom end of the first base cover 1311 is inserted into and disposed in the first groove 16′a, and the bottom end of the second base cover 1312 is inserted into and disposed in the second groove 16′b.

[0266] The cross-sectional shape of the first groove 16′a can correspond to the shape of the end of the bottom surface of the first base cover 1311, and the cross-sectional shape of the second groove 16′b can correspond to the shape of the end of the bottom surface of the second base cover 1312. Therefore, the fourth reinforcing member 16′ can suppress gaps that may form between the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover 1312.

[0267] Although Figure 11 A space is shown between the fourth reinforcing member 16′ and the end of the bottom surface of the base cover 131, but Figure 11 This is to indicate the fastening relationship between the fourth reinforcing member 16′ and the base cover 131; in reality, the space does not exist.

[0268] The length direction of the fourth reinforcing member 16′ ( Figure 9 The shape in the y-direction of the base cover 131 is perpendicular to the length direction of the bottom surface. Figure 9 The shape corresponds to the shape in the y-direction.

[0269] Therefore, if the bottom surface of the base cover 131 is in the length direction ( Figure 9 If the fourth reinforcing member 16′ has a curved (or bent) shape in the y-direction, then the length direction of the fourth reinforcing member 16′ ( Figure 9The shape in the y-direction also has a curved (or bent) shape at the corresponding position.

[0270] Additionally, along the length of the fourth reinforcing member 16′ on the base cover 131 ( Figure 9 The y-direction of the base cover 131 is arranged on the entire bottom surface of the base cover 131 and along the height direction of the base cover 131. Figure 9 When the fourth reinforcing member 16′ is configured in the z-direction of a portion of one side of the base cover 131, the shape of the fourth reinforcing member 16′ corresponds to the shape of the entire bottom surface and one side surface of the base cover 131.

[0271] The fourth reinforcing member 16' is formed of or includes melamine resin. Therefore, the fourth reinforcing member 16' has improved pressure resistance, arc extinguishing performance, and heat resistance.

[0272] In addition, the fourth reinforcing member 16′ can be formed of synthetic resin to reduce production costs.

[0273] The fourth reinforcing member 16′ is attached to the base cover 131 by an adhesive. Specifically, the fourth reinforcing member 16′ is attached to the end of the bottom surface of the first base cover 1311 and the end of the bottom surface of the second base cover 1312 by an adhesive.

[0274] For example, the adhesive can be a silicone adhesive with strong heat resistance and excellent electrical insulation. However, the adhesive is not limited to silicone adhesives, but can also be adhesives made of various other materials such as epoxy.

[0275] Before the first base cover 1311 and the second base cover 1312 are joined (or assembled), adhesive is applied to the first groove 16′a and the second groove 16′b of the fourth reinforcing member 16′ and / or to the ends of the bottom surfaces of the first base cover 1311 and the second base cover 1312. Then, the end of the bottom surface of the first base cover 1311 is inserted into the first groove 16′a, and the end of the bottom surface of the second base cover 1312 is inserted into the second groove 16′b. Finally, fastening components (bolts, nuts, screws, etc.) are used to join (or assemble) the first base cover 1311 and the second base cover 1312.

[0276] On the other hand, if an abnormal current (fault current) flows in the wiring circuit breaker 10, the tripping unit 136 cuts off the external and internal power supply to the wiring circuit breaker 10. In other words, the tripping unit 136 senses the overcurrent or short-circuit current flowing in the circuit and guides the tripping action of the switching mechanism 135.

[0277] The tripping section 136 is housed within a portion of the housing 12. The tripping section 136 is electrically connected to the fixed contact 132.

[0278] The tripping unit 136 includes a tripping lever, a trip unit, and a resilient member to perform its function. If the tripping unit 136 is activated, the opening and closing mechanism 135 connected to the tripping unit 136 is activated, so that external users can easily identify that a tripping action has been performed.

[0279] Since the operation process of the trip unit 136 and the operation process of the opening and closing mechanism unit 135 through the trip unit 136 are known technologies, detailed descriptions thereof are omitted.

[0280] An opening and closing mechanism 135 is configured (or installed) in any one of the plurality of base assemblies 13.

[0281] The opening and closing mechanism 135 moves the movable contact 133 to provide the power required for opening and closing the circuit.

[0282] The opening and closing mechanism 135 includes a handle 135 and various components for mounting and driving the handle 1351.

[0283] The opening and closing mechanism 135 is connected to the shaft 137, and the shaft 137 rotates when the opening and closing mechanism 135 rotates. That is, the shaft 137 can rotate by receiving the force from the opening and closing mechanism 135.

[0284] The opening and closing mechanism 135 rotates due to the operation of the tripping part 136. As a result, the shaft 137 also rotates, thereby causing the fixed contact 132 and the movable contact 133 to come into contact with or separate from each other.

[0285] A rotating pin 1371 is provided through the shaft 137. The shaft 137 receives the opening and closing power of the opening and closing mechanism 135 and rotates through the rotating pin 1371. The movable contact 133 also rotates with the shaft 137, thereby contacting or separating from the fixed contact 132.

[0286] Since the process by which the opening and closing mechanism 135 and the shaft 137 rotate due to the action of the tripping unit 136 is known technology, a detailed description thereof is omitted.

[0287] The movable contact 133 is rotatably configured (or mounted) on the shaft 137.

[0288] The movable contact 133 rotates with or alone in a counterclockwise or clockwise direction to contact or separate from the fixed contact 132. If the movable contact 133 and the fixed contact 132 are in contact, the circuit is energized; if the movable contact 133 and the fixed contact 132 are separated, the circuit is de-energized (in other words, disconnected).

[0289] The fixed contact 132 is configured to be separated from the movable contact 133 by a predetermined distance.

[0290] An arc-extinguishing part 134 is arranged around the part where the fixed contact 132 and the movable contact 133 are in contact with or separated from each other.

[0291] When the circuit is in normal condition, the fixed contact 132 and the movable contact 133 are in contact, and current flows in the circuit.

[0292] Conversely, if an abnormal current occurs in the circuit, a tripping action is performed by the operation of the tripping section 136 and the opening / closing mechanism section 135. That is, the movable contact 133 rotates and separates from the fixed contact 132, and the current in the circuit is cut off. At this time, an electric arc is generated around the part where the movable contact 133 and the fixed contact 132 separate (see reference). Figure 3 ).

[0293] The size (intensity) of the electric arc A is proportional to the magnitude of the current. Electric arc A is a phenomenon where atmospheric gas instantaneously becomes plasma due to voltage. The center temperature of electric arc A reaches 8,000°C to 12,000°C and possesses explosive expansion pressure. Therefore, electric arc A melts and consumes contacts 132 and 133, and degrades and damages surrounding components.

[0294] Therefore, only by maintaining the pressure resistance inside the base assembly 13 (specifically, the base cover 131) can the performance requirements of the wiring circuit breaker be met.

[0295] When an abnormal current (fault current) is interrupted, the high-temperature, high-voltage electric arc A generates oxides inside the base cover 131, and also creates gaps between the first base cover 1311 and the second base cover 1312. The oxides flow out from these gaps and into the interior of the wiring circuit breaker housing 12. These oxides contaminate the interior of the housing 12 and reduce its insulation performance.

[0296] In an example of an embodiment of the present invention, the wiring circuit breaker 10 has reinforcing members 14, 15, 16, 16′, and / or the reinforcing members 14, 15, 16, 16′ are attached to the base cover 131 by an adhesive, thereby improving the pressure resistance of the base cover 131 and the insulation performance of the housing 12.

[0297] Whether arc A continues or not has a significant impact on the performance and durability of the circuit breaker used for wiring. Therefore, it is necessary to quickly cut off, extinguish, and discharge arc A within the arc-extinguishing section 134.

[0298] The arc extinguishing section 134 extinguishes the electric arc A generated when the abnormal current is interrupted.

[0299] As the electric arc A enters the grid 1341, it is broken into short arcs, and the voltage of arc A increases. Furthermore, due to the presence of arc-extinguishing gases such as SF6 within the arc-extinguishing section 134, the voltage of arc A increases further. Therefore, arc A is extinguished by suppressing the release of free electrons.

[0300] Arc A is generated when the fixed contact 132 and the movable contact 133 separate. Arc A is extinguished when it passes through the arc extinguishing part 134 and discharged to the outside of the wiring circuit breaker 10.

[0301] The arc-extinguishing section 134 is located near the contact points of the fixed contact 132 and the movable contact 133. Specifically, the arc-extinguishing section 134 is located near the contact points of the fixed contact 132 and the movable contact 133 and near the path of rotation of the movable contact 133. As a result, the electric arc A extending along the movable contact 133 can easily enter the arc-extinguishing section 134.

[0302] A plurality of arc-extinguishing parts 134 may be provided. The plurality of arc-extinguishing parts 134 are respectively configured to be adjacent to the positions that contact the fixed contact 132 and the movable contact 133.

[0303] The arc-extinguishing part 134 includes a support plate (not marked) and a grid plate 1341.

[0304] Multiple support plates may be provided. The multiple support plates are configured to be separate from each other and facing each other, and support grid plates 1341 on both sides.

[0305] The grid plate 1341 applies a magnetic force to the generated electric arc A. The generated electric arc A is extinguished as it passes between the grid plates 1341 by the magnetic force applied by the grid plate 1341 and discharged to the outside of the wiring circuit breaker 10.

[0306] The grid 1341 is formed of a magnetic material. This is to cause the generated arc A to flow toward the arc outlet by applying an attractive force to the arc A, which is a flow of electrons.

[0307] The grid plate 1341 may have a defined space formed on the side facing the movable contact 133. The movable contact 133 can rotate when passing through the space. The rotation path of the movable contact 133 is located between the grid plates 1341. Thus, the electric arc A can be guided by the grid plates 1341.

[0308] A plurality of grid plates 1341 may be provided. The plurality of grid plates 1341 are separated from each other and stacked. The generated electric arc A is extinguished and moved through the space formed between the grid plates 1341.

[0309] The plurality of grid plates 1341 can be stacked vertically and can be stacked at an angle according to the position of the passage for discharging the electric arc A. Thus, the electric arc A can pass through the space between the plurality of grid plates 1341 and can move smoothly toward the passage for discharging the electric arc A.

[0310] The features, structures, and effects described in the above embodiments belong to at least one embodiment of the present invention, but are not necessarily limited to only one embodiment. Furthermore, those skilled in the art can combine or modify the features, structures, and effects exemplified in each embodiment to implement other embodiments. Therefore, it should be understood that the content related to such combinations and modifications falls within the scope of the present invention.

[0311] Furthermore, the above description focuses on the implementation state, but this is merely an example and not a limitation of the invention. Those skilled in the art will understand that various modifications and applications not illustrated can be made without departing from the essential characteristics of this implementation state. That is, the specific constituent elements appearing in the implementation state can be modified. Moreover, it should be understood that any differences related to such modifications and applications fall within the scope of the invention as defined in the claims.

Claims

1. A circuit breaker for wiring, wherein, include: case; A plurality of base assemblies are housed in the housing; as well as A reinforcing member is disposed on the base assembly; The base assembly has a base cover, which has an internal space to accommodate a fixed contact, a movable contact, and an arc-extinguishing part. The base cover has a reinforcing member receiving portion for accommodating the reinforcing member.

2. The circuit breaker for wiring according to claim 1, wherein, The reinforcing member receiving portion is formed in the shape of a groove that is recessed from the bottom surface to the top surface of the base cover.

3. The circuit breaker for wiring according to claim 1, wherein, The base cover includes a first base cover and a second base cover that is combined with the first base cover; The reinforcing member receiving portion is formed in the first base cover and the second base cover; If the first base cover and the second base cover are combined, they form a receiving portion for the reinforcing member.

4. The circuit breaker for wiring according to claim 3, wherein, The reinforcing member receiving portion includes: A first reinforcing member receiving portion is formed at the end of the bottom surface of the first base cover; and The second reinforcing member receiving portion is formed at the end of the bottom surface of the second base cover; One of the reinforcing member receiving portions is formed by the combination of the first reinforcing member receiving portion and the second reinforcing member receiving portion; The first reinforcing member receiving portion is formed by recessing a predetermined depth from the bottom surface to the top surface of the first base cover, and the second reinforcing member receiving portion is formed by recessing a predetermined depth from the bottom surface to the top surface of the second base cover.

5. The circuit breaker for wiring according to claim 3, wherein, The reinforcing member receiving portion includes: A first reinforcing member receiving portion is formed on the side of the end of the bottom surface of the first base cover; and The second reinforcing member receiving portion is opposite to the first reinforcing member receiving portion and is formed on the side of the end of the bottom surface of the second base cover; One of the reinforcing member receiving portions is formed by the combination of the first reinforcing member receiving portion and the second reinforcing member receiving portion; The first reinforcing member receiving portion is formed by recessing a predetermined depth from the side of the bottom end of the first base cover in one direction, and the second reinforcing member receiving portion is formed by recessing a predetermined depth from the side of the bottom end of the second base cover in the opposite direction.

6. The circuit breaker for wiring according to claim 5, wherein, The first reinforcing member receiving portion is formed along the end of the bottom surface of the first base cover; The second reinforcing member receiving portion is formed along the end of the bottom surface of the second base cover.

7. The circuit breaker for wiring according to claim 6, wherein, The reinforcing member is formed in a shape corresponding to the receiving portion of the reinforcing member.

8. The circuit breaker for wiring according to claim 1, wherein, The reinforcing member is formed in a shape corresponding to the shape of the reinforcing member receiving portion.

9. The circuit breaker for wiring according to claim 8, wherein, The reinforcing member is formed in the shape of a rod having a predetermined length in one direction; The reinforcing member receiving portion is formed in the shape of a groove with a predetermined length corresponding to the shape of the reinforcing member.

10. The circuit breaker for wiring according to claim 8, wherein, The reinforcing member is formed in the form of a plate with a predetermined thickness and a square or rectangular planar shape; The reinforcing member receiving portion is formed in the shape of a groove with a predetermined depth and a planar shape of square or rectangle.

11. The circuit breaker for wiring according to claim 1, wherein, The reinforcing member receiving portion corresponds to a part of the bottom surface of the base cover, which is a flat bottom surface of the base cover without bends, grooves, or steps.

12. The circuit breaker for wiring according to claim 11, wherein, The preset width and length of the reinforcing member are the same as the preset width and length of the reinforcing member receiving portion.

13. The circuit breaker for wiring according to claim 1, wherein, The reinforcing member receiving portion is formed inside the bottom surface of the base cover.

14. The circuit breaker for wiring according to claim 1, wherein, The reinforcing member is attached to the reinforcing member receiving portion by an adhesive.

15. A circuit breaker for wiring, wherein, include: case; A plurality of base assemblies are housed in the housing; as well as A reinforcing member is disposed on the base assembly; The base assembly has a base cover, which has an internal space to accommodate a fixed contact, a movable contact, and an arc-extinguishing part. The base cover includes a first base cover and a second base cover that is combined with the first base cover; The reinforcing member is disposed between the end of the bottom surface of the first base cover and the end of the bottom surface of the second base cover.

16. The circuit breaker for wiring according to claim 15, wherein, The shape of the reinforcing member in the length direction corresponds to the shape of the bottom surface of the base cover in the length direction.

17. The circuit breaker for wiring according to claim 16, wherein, The reinforcing member includes a first groove and a second groove; The first groove and the second groove are formed on the outer surface of the reinforcing member along the length direction of the reinforcing member; The first groove and the second groove are formed in a groove shape that is recessed towards each other.

18. The circuit breaker for wiring according to claim 17, wherein, The bottom end of the first base cover is inserted into and positioned in the first groove; The bottom end of the second base cover is inserted into and positioned in the second groove.

19. The circuit breaker for wiring according to claim 15, wherein, The reinforcing member is attached to the ends of the bottom surfaces of the first base cover and the second base cover by adhesive.

20. The circuit breaker for wiring according to claim 1 or 15, wherein, The reinforcing member is formed of or includes melamine resin.

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