Electrical junction box

Abstract

This electrical junction box comprises: a first member equipped with a bus bar, a first rib that abuts against the bus bar, and a locking portion; and a second member equipped with a holding portion that holds the locking portion in a locked state, and a support portion in contact with the rear surface of the bus bar. While the first rib abuts against the front surface of the bus bar, the first rib together with the support portion hold the bus bar therebetween.

Description

Electrical connection box

[0001] This disclosure relates to an electrical connection box. This application claims priority to Japanese Patent Application No. 2024-176562 filed in Japan on October 8, 2024, the content of which is incorporated herein by reference.

[0002] A structure for holding a bus bar incorporated in an electrical connection box while sandwiching it is known.

[0003] For example, Patent Document 1 discloses, "A bus bar plate having a positive electrode terminal and a negative electrode terminal, and a plurality of bus bars each having a screw portion formed on either one of these terminals are arranged in series while corresponding the positive electrode terminal and the negative electrode terminal, and a control board connected to these bus bars is integrally provided. A cell module structure characterized in that a plurality of cells are connected in series via each bus bar by a connection form in which, as each screw portion of each cell is screwed into the screw portion of each bus bar, terminals of different polarities from the terminals in which these screw portions are formed are brought into contact with each other."

[0004] Japanese Patent Application Laid-Open No. 2002-008627

[0005] Patent Document 1 discloses, in the above cell module structure, "The bus bar plate includes a first plate arranged on the mounting side of the cell and a second plate that sandwiches and holds the bus bar together with the first plate. The first plate is formed with an engaging portion that receives the reaction force from the bus bar plate generated by the screwing torque when the screw portion of the cell is screwed into the screw portion of the bus bar and engages with the bus bar to prevent the bus bar from coming off." However, when the above cell module structure has a gap between at least one of the first plate and the second plate and the bus bar, the bus bar can vibrate.

[0006] One embodiment aims to provide an electrical connection box in which the bus bar is less likely to vibrate.

[0007] An electrical junction box in one embodiment comprises a first member having a busbar, a first rib that abuts against the busbar, and a locking portion, and a second member having a holding portion that maintains the locked state by the locking portion, and a support portion that is in contact with the back surface of the busbar, wherein the first rib abuts against the surface of the busbar, and the first rib, together with the support portion, holds the busbar by sandwiching it.

[0008] According to one embodiment, the busbar is less prone to vibration.

[0009] An exploded view showing the electrical junction box of the embodiment. A perspective view showing the electronic components of the embodiment. A perspective view I showing the electrical junction box of the embodiment. A perspective view II showing the electrical junction box of the embodiment. A perspective view showing the second member of the embodiment. A perspective view showing the second member and busbar of the embodiment. A plan view showing the electrical junction box of the embodiment. A cross-sectional view along A-A showing the electrical junction box of the embodiment. A partially enlarged view of section CC in Figure 7.

[0010] The embodiments of this disclosure will be described below with reference to the drawings. The drawings and specific configurations used in each embodiment should not be used to interpret the disclosure. In all drawings, identical or corresponding components are denoted by the same reference numerals, and common descriptions are omitted.

[0011] In this disclosure, the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction are defined as follows: The +Z direction is the direction in which the surface of the first busbar faces. The -Z direction is the direction opposite to the +Z direction. Hereinafter, when the +Z direction and the -Z direction are not distinguished, they will simply be referred to as the "Z direction". The +Y direction is the direction in which the extension extends from one end of the first connection part in the busbar. The -Y direction is the direction opposite to the +Y direction. Hereinafter, when the +Y direction and the -Y direction are not distinguished, they will simply be referred to as the "Y direction". The +X direction and the -X direction are directions that intersect (e.g., are orthogonal to) the Y direction and the Z direction. The +X direction is the direction in which the projection of the locking part faces. The -X direction is the direction opposite to the +X direction. Hereinafter, when the +X direction and the -X direction are not distinguished, they will simply be referred to as the "X direction".

[0012] In the following, the X and Y directions may be referred to as the "horizontal direction" if they are not distinguished. In the following, the Z direction may be referred to as the "vertical direction." However, these expressions are for the convenience of explanation and do not limit the installation orientation of the electrical junction box 100.

[0013] <First Embodiment> An electrical junction box 100 according to one embodiment will be described below with reference to the figures. As shown in Figure 1, the electrical junction box 100 comprises an electronic component 1, a busbar 2, a first member 3, and a second member 4. For example, the electrical junction box 100 may be mounted on a mobility unit such as an electric vehicle.

[0014] (Configuration of Electronic Components) Electronic component 1 is, for example, a connector, fuse, relay (e.g., mechanical relay or semiconductor relay), capacitor, branching component, various sensors (e.g., current sensor or voltage sensor), electronic control unit, or an electronic component unit that combines two or more of these. The type of electronic component 1 is not limited to the above examples. Electronic component 1 is, for example, a heat-generating component that generates heat when energized. In the following, a fuse is given as an example of electronic component 1.

[0015] As shown in Figures 1 and 2, the electronic component 1 is an electronic component in which two terminals 13 are arranged separately at both ends in the horizontal direction. The electronic component 1 has, for example, a case 11, a component body 12, and a plurality of terminals 13.

[0016] (Case) The case 11 is an outer casing that forms most of the outer shape of the electronic component 1. The case 11 is made of, for example, synthetic resin and has insulating properties. The case 11 houses the component body 12. The case 11 and the component body 12 may be formed as a single unit.

[0017] (Component body) The component body 12 is the part that performs the main function of the electronic component 1. For example, if the electronic component 1 is a fuse, the component body 12 includes a fuse that melts when an overcurrent flows. If the electronic component 1 is a relay, the component body 12 includes a switching part (e.g., a contact part) that switches between a conductive state and a non-conductive state. For example, if the electronic component 1 is a capacitor, the component body 12 includes a part that stores electric charge.

[0018] (Terminals) Terminal 13 is an electrical connection part exposed to the outside of the case 11. Terminal 13 is electrically connected to the component body 12 inside the case 11. In this embodiment, the electronic component 1 includes terminals 13A and terminal 13B as a plurality of terminals 13. One of terminals 13A and terminal 13B is the positive terminal. The other of terminals 13A and terminal 13B is the negative terminal. For example, in this embodiment, the first connection part and terminal 13A are electrically connected.

[0019] In this embodiment, the terminals are arranged separately at both ends of the electronic component 1 in the horizontal direction (e.g., the Y direction). Each terminal 13 has a mounting hole 13h to which a fastening member 71 (e.g., a screw or bolt), described later, is attached. The mounting hole 13h opens in the Z direction. For example, the mounting hole 13h of the electronic component 1 is a through hole through which the fastening member 71 passes.

[0020] The arrangement of the terminals 13 of the electronic component 1 is not limited to the above example. For example, multiple terminals 13 may be arranged in a row at one end of the electronic component 1. For example, a relay is an example of an electronic component in which multiple terminals 13 are arranged in a row at one end of the electronic component 1.

[0021] In this embodiment, the electrical junction box 100 suppresses vibrations of the busbar 2, and consequently, suppresses vibrations of the electronic component 1 electrically connected to the busbar 2. Vibrations of the electronic component 1 can occur when vibrations of the busbar 2 are transmitted to it.

[0022] (Busbar configuration) As shown again in Figure 1, the busbar 2 is a wiring member (electrical connection member) that electrically connects multiple electrical components. The busbar 2 is made of metal (for example, copper or copper alloy) and is conductive. In this embodiment, the busbar 2 is electrically connected to terminal 13A of the electronic component 1. When the electronic component 1 is a fuse, the current flowing through the busbar 2 is monitored. At least a part of the busbar 2 (for example, the extended portion 22) is supported by the support portion 41 of the second member 4.

[0023] The busbar 2 has, for example, a first connecting portion 21, an extension portion 22, a second connecting portion 23, and an extension portion 24. In this embodiment, each of the first connecting portion 21, the extension portion 22, the second connecting portion 23, and the extension portion 24 is plate-shaped. That is, each of the first connecting portion 21, the extension portion 22, the second connecting portion 23, and the extension portion 24 has a flat rectangular cross-sectional shape.

[0024] (First connection part) The first connection part 21 is the part that electrically connects the busbar 2 and the electronic component 1. The first connection part 21 is provided at one end of the busbar 2. The first connection part 21 has an insertion hole 21h through which a fastening member 71 (for example, a screw or bolt) is passed. After fastening with the fastening member 71, the mating part 81 (for example, a nut) comes into contact with the back surface 2BS of the busbar 2. The first connection part 21 is an example of a "fastening part".

[0025] (Extended portion) The extended portion 22 is a portion that extends in a predetermined direction and is provided between the first connecting portion 21 and the second connecting portion 23. For example, in this embodiment, the extended portion 22 extends from the first connecting portion 21 along the Y direction.

[0026] (Second connection part) The second connection part 23 is the part that electrically connects the electronic component 1, which is electrically connected to the busbar 2, to other components or equipment. The second connection part 23 is provided at one end of the busbar 2. The second connection part 23 has an insertion hole 23h through which a fastening member 72 (for example, a screw or bolt) is passed. After fastening with the fastening member 72, the mating part 82 (for example, a nut) comes into contact with the back surface 2BS of the busbar 2.

[0027] (Extension) The extension 24 is a portion of the busbar 2 that has been extended for the purpose of increasing the heat dissipation area and / or the heat capacity for heat storage (heat absorption). The extension 24 is a portion that is not used for electrical connections. In this embodiment, the extension 24 is connected to the first connection 21 and extends along the vertical direction.

[0028] Furthermore, in this embodiment, the extension portion 24 extends so as to intersect the direction in which the extension portion 22 extends. When the extension portion 24 extending in this direction contacts the second member 4, the rotation of the busbar 2 is suppressed. Loosening of the fastening member 71 (e.g., a screw or bolt) and / or fastening member 72 (e.g., a screw or bolt) is suppressed. The mating parts 81 (e.g., a nut) and 82 (e.g., a nut) are housed in the recess 41R described later.

[0029] The busbar 2 has an opening 2EX corresponding to the projection 43. When fastening the fastening member 71 and / or fastening member 72 to the busbar 2, the busbar 2 may rotate in the same direction as the tightening torque due to the sliding of the fastening member relative to the fastened member. The rotation of the busbar 2 is suppressed when the opening 2EX is inserted through the projection 43. By suppressing the rotation of the busbar 2, loosening of the fastening member 71 (e.g., a screw or bolt) and / or fastening member 72 (e.g., a screw or bolt) is suppressed.

[0030] Furthermore, the busbar 2 has a notch 2NO corresponding to the projection 44. When fastening the fastening member 71 and / or fastening member 72 to the busbar 2, the busbar 2 may rotate in the same direction as the tightening torque due to the sliding of the fastening member against the fastened member. The rotation of the busbar 2 is suppressed when the projection 44 contacts the notch. By suppressing the rotation of the busbar 2, loosening of the fastening member 71 (e.g., a screw or bolt) and / or fastening member 72 (e.g., a screw or bolt) is suppressed.

[0031] (Configuration of the first member) As shown in Figures 1, 3, and 4, the first member 3 is a member that protects the busbar 2 from the outside. In this embodiment, the first member 3 has an opening on a part of the surface facing the +Z direction, but is not limited to this.

[0032] The first member 3 is lockable to the second member 4. By locking, the first member 3 protects the busbar 2. The first member 3, like the second member 4 described later, is made of, for example, synthetic resin and has insulating properties. The first member 3 comprises a cover portion 31, at least one or more ribs 32 (rib 32A, rib 32C, rib 32D), and a locking portion 33. The ribs 32 are located on the side of a predetermined direction when viewed from the fastening members (fastening members 71, fastening members 72). For example, rib 32A is located on the +Y direction side when viewed from the fastening members (fastening members 71, fastening members 72). Rib 32A is an example of the "first rib" and / or the "third rib". For example, rib 32C is located on the +X direction side when viewed from the fastening members (fastening members 71, fastening members 72). Rib 32C is an example of the "first rib" and / or the "third rib". For example, rib 32D is located on the -X side when viewed from the fastening members (fastening members 71 and 72). Rib 32D is an example of a "first rib" and / or a "third rib".

[0033] (Cover portion) The cover portion 31 protects the busbar 2. In this embodiment, the cover portion 31 has an opening on a part of the surface facing the +Z direction, but is not limited to this. The cover portion 31 forms the main part of the first member 3. The support portion 41 forms the base (insulating base) of the second member 4. As shown in Figure 1, the cover portion 31 has a curved surface 31c. The curved surface 31c forms a step between itself and the upper surface of the cover portion 31. When the first member 3 and the second member 4 are locked together, the curved surface 31c is adjacent to the stepped surface 41c, which will be described later, in the Z direction. The curved surface 31c, like the stepped surface 41c, has a surface that follows a part of the outer shape of the electronic component 1. When the electronic component 1 is arranged along the curved surface 31c, the enlargement of the body of the electrical connection box 100 is suppressed.

[0034] (Ribs) As shown in Figures 3 and 4, the ribs 32 (ribs 32A, ribs 32C, and ribs 32D) abut against the surface 2S of the busbar 2. When the first member 3 and the second member 4 are locked together, the ribs 32 press against the busbar 2. The ribs 32 are adjacent to the first connecting portion 21, which is the fastening portion. For example, in this embodiment, ribs 32C and ribs 32D are positioned in the X direction so as to sandwich the first connecting portion 21. Also, since the electronic component 1 is located in the Y direction, rib 32A is positioned on the +Y direction side so as not to interfere with the electronic component 1. That is, in this embodiment, the ribs 32 are positioned so as to surround the fastening portion within a range that does not interfere with the electronic component 1. The number of ribs 32A, ribs 32C, and ribs 32D at each position is set as appropriate. When the first member 3 is provided with multiple ribs 32, the wider the distance between one rib 32 and the other rib 32, the easier it is to suppress vibrations of the busbar 2.

[0035] The rib 32 may be adjacent to the second connecting portion 23, which is a fastening portion.

[0036] (Locking part) The locking part 33 is used to lock the first member 3 and the second member 4. An example of the locking part 33 is a snap-fit ​​claw. The snap-fit ​​claw has an arm 33AR and a protruding part 33PR which is a part of the arm protruding. In this embodiment, the arm 33AR is formed by providing a slit SL (see Figures 1 and 3) in a part of the first member 3. The protruding part 33PR protrudes from the arm 33AR in a direction intersecting the direction in which the arm 33AR extends. In this embodiment, the protruding part 33PR protrudes toward the second member 4 in the X direction and locks into the holding part 42 described later. When the protruding part 33PR is pressed when locking into the holding part 42, the arm 33AR oscillates in a predetermined direction.

[0037] (Configuration of the second member) As shown in Figures 5 and 6, the second member 4 is a support member that supports the bus bar 2. The second member 4 is in contact with the back surface 2BS of the bus bar 2. The second member 4 is made of, for example, synthetic resin and has insulating properties. The second member 4 includes, for example, a support portion 41, a holding portion 42, a projection portion 43, and a projection portion 44.

[0038] (Support portion) The support portion 41 is a plate-shaped part within the second member 4. The support portion 41 is plate-shaped and oriented horizontally. The support portion 41 forms the main part of the second member 4. The support portion 41 forms the base (insulating base) of the second member 4.

[0039] The support portion 41 has a first surface 41a, a second surface 41b, and a stepped surface 41c. The first surface 41a is a surface oriented in the +Z direction. The first surface 41a is a plane that aligns with the horizontal direction. The stepped surface 41c is adjacent to the first surface 41a and forms a step between them. The stepped surface 41c has a surface that conforms to a part of the external shape of the electronic component 1.

[0040] As shown in Figure 5, the support portion 41 on the first surface 41a is subjected to multiple cutouts. During the cutout process, at least one rib 41L is provided on the support portion 41. The rib 41L contacts the back surface 2BS of the busbar 2. When the first member 3 and the second member 4 are locked together, the rib 41L presses against the busbar 2. The rib 41L is an example of a "second rib". The second surface 41b is located on the opposite side from the first surface 41a. The second surface 41b is a surface facing the -Z direction. The second surface 41b is a plane that aligns with the horizontal direction. The second surface 41b is the mounting surface when the mobility unit is mounted.

[0041] (Recess) On the support portion 41 on the first surface 41a, recesses 41R (recess 41R1, recess 41R2) for accommodating mating parts 81 and / or mating parts 82 are provided on the support portion 41. When viewed from the Z direction, the recesses 41R have an outer shape corresponding to the shape of the mating parts 81 and / or mating parts 82 to be accommodated. Recess 41R1 has an outer shape corresponding to the mating part 81 to be accommodated (for example, a nut). Recess 41R2 has an outer shape corresponding to the mating part 82 to be accommodated (for example, a nut). When fastening the fastening member 71, the mating part 81 moves in the Z direction due to the rotation prevention of the mating part 81 by recess 41R1. When fastening, the mating part 81 comes into contact with the back surface 2BS of the busbar 2. When fastening the fastening member 72, the mating part 82 moves in the Z direction due to the rotation prevention of the mating part 82 by recess 41R2. When fastened, the mating part 82 comes into contact with the back surface 2BS of the busbar 2.

[0042] (Retention Portion) The retention portion 42 is used to retain the locked state of the first member 3 and the second member 4 by the locking portion 33. As an example of the retention portion 42, a protruding portion 42PR can be cited. The protruding portion 42PR protrudes from the second member 4 in a direction intersecting the direction in which the arm portion 33AR extends. In the present embodiment, the protruding portion 42PR protrudes toward the first member 3 in the X direction. When the first member 3 and the second member 4 are locked, the protruding portion 42PR swings the arm portion 33AR in a predetermined direction.

[0043] (Protrusion) As shown in FIG. 6, the protrusion 43 serves as a guide for the bus bar 2 during assembly. As described above, since the bus bar 2 has the opening 2EX, the rotation of the bus bar 2 is consequently suppressed. By suppressing the rotation of the bus bar 2, looseness in the fastening member 71 (for example, a screw or a bolt) and / or the fastening member 72 (for example, a screw or a bolt) is suppressed.

[0044] (Protrusion) As shown in FIG. 6, the protrusion 44 serves as a guide for the terminal 13A during assembly. As described above, since the bus bar 2 has the notch 2NO, the rotation of the bus bar 2 is consequently suppressed. By suppressing the rotation of the bus bar 2, looseness in the fastening member 71 (for example, a screw or a bolt) and / or the fastening member 72 (for example, a screw or a bolt) is suppressed.

[0045] (State of the Bus Bar) FIGS. 7 to 10 show the first member 3 and the second member 4 in the locked position. The state of the bus bar 2 when the first member 3 and the second member 4 are locked will be described in detail below.

[0046] As shown in FIG. 8, when the first member 3 and the second member 4 are locked, the first member 3 moves toward the SL direction. At that time, by the inclined surface of the retention portion 42 (the protruding portion 42PR), the protruding portion 33PR is pressed from the inside to the outside of the first member 3. The arm portion 33AR elastically deforms in the direction in which the protruding portion 33PR is pressed. Next, after the protruding portion 33PR gets over the inclined surface, the elastic deformation of the arm portion 33AR returns, and the first member 3 and the second member 4 are locked.

[0047] As shown in FIGS. 8 to 9, when the first member 3 and the second member 4 are locked, while the rib 32 (rib 32A, rib 32C, rib 32D) abuts against the surface 2S of the bus bar 2, the rib 32 holds the bus bar 2 with the support portion 41 therebetween by sandwiching the bus bar 2. Further, in the present embodiment, with the relief provided in the support portion 41, the support portion 41 has at least one or more ribs 41L. When the first member 3 and the second member 4 are locked, while the rib 32 abuts against the surface 2S of the bus bar 2, the rib 32 holds the bus bar 2 with the rib 41L therebetween by sandwiching the bus bar 2.

[0048] (Operation and Effect) In the present embodiment, the electrical connection box 100 includes a first member 3 including a bus bar 2, a first rib (rib 32A, rib 32C, rib 32D) that abuts against the bus bar 2, and a locking portion 33, a holding portion 42 that holds the locked state by the locking portion 33, and a second member 4 including a support portion 41 that contacts the back surface 2BS of the bus bar 2. While the first rib (rib 32A, rib 32C, rib 32D) abuts against the surface 2S of the bus bar 2, the first rib (rib 32A, rib 32C, rib 32D) holds the bus bar 2 with the support portion 41 therebetween by sandwiching the bus bar 2. According to such a configuration, while the first rib (rib 32A, rib 32C, rib 32D) abuts against the surface 2S of the bus bar 2, the first rib (rib 32A, rib 32C, rib 32D) holds the bus bar 2 with the support portion 41 therebetween by sandwiching the bus bar 2. A part of the bus bar 2 is pressed by the first rib (rib 32A, rib 32C, rib 32D), making it difficult for the bus bar 2 to vibrate. As described above, in the electrical connection box 100 according to the present embodiment, the bus bar is difficult to vibrate.

[0049] Further, since the member in contact with the bus bar 2 is the rib portion (rib 32A, rib 32C, rib 32D) of the first member 3, the surface pressure on the bus bar 2 can be increased as compared with the case where the first member 3 presses the entire surface 2S of the bus bar 2. Therefore, in the electrical connection box 100 according to the present embodiment, the bus bar becomes even more difficult to vibrate.

[0050] In this embodiment, the support portion 41 further includes a second rib (rib 41L) that abuts against the busbar 2, and the first ribs (ribs 32A, ribs 32C, ribs 32D) together with the second rib (rib 41L) hold the busbar 2 between them. With this configuration, the presence of the rib (rib 41L) in the support portion 41 allows for greater surface pressure on the busbar 2 compared to the case where the second member 4 presses against the entire back surface 2BS of the busbar 2. Therefore, in the electrical junction box 100 according to this embodiment, the busbar is less prone to vibration.

[0051] In this embodiment, the electrical junction box 100 further comprises an electronic component 1, the busbar 2 has a fastening portion (first connection portion 21), the electronic component 1 is fastened to the fastening portion (first connection portion 21), and the first ribs (ribs 32A, ribs 32C, ribs 32D) are adjacent to the fastening portion (first connection portion 21). With this configuration, the busbar 2 is pressed around the fastening portion (first connection portion 21) to which the electronic component 1 is fastened, making it easier to suppress vibrations transmitted to the electronic component 1 via the busbar 2.

[0052] Furthermore, depending on the difference in fastening force of the fastening member 71 that fastens at the fastening portion (first connection portion 21) (for example, the difference in axial force depending on the size of the bolt), the fastening may loosen due to vibration of the busbar 2. On the other hand, if the first ribs (ribs 32A, ribs 32C, ribs 32D) are configured to be adjacent to the fastening portion (first connection portion 21), vibration of the busbar 2 is more easily suppressed, and the fastening of the fastening member 71 becomes less likely to loosen.

[0053] In this embodiment, the first member 3 further includes a third rib (rib 32A, rib 32C, rib 32D) that contacts the busbar 2. With this configuration, the number of ribs 32 that contact the busbar 2 increases, making the busbar 2 less susceptible to vibration.

[0054] (Modification 1) The support portion 41 may have, for example, a housing portion that holds a part of the busbar 2. The housing portion is a recess provided on the first surface 41a of the support portion 41 and recessed in the first direction (-Z direction). When viewed from the Z direction, the housing portion has an outer shape corresponding to the shape of the busbar 2 to be housed. In this modification, "the housing portion is recessed in the first direction (-Z direction)" may include the case in which a part of the total length of the housing portion is recessed in the -Z direction. For example, in the above embodiment, the housing portion may hold the extended portion 22 of the busbar 2.

[0055] (Modification 2) The busbar 2 may be bent by having a plurality of extensions 22 that extend in a predetermined direction.

[0056] One embodiment and its variations have been described above. However, the embodiments and variations are not limited to the examples described above. For example, the embodiments and variations may be implemented in combination with each other.

[0057] According to the embodiments of this disclosure, the busbar is less prone to vibration.

[0058] 100 Electrical connection box 1 Electronic component 11 Case 12 Component body 13 Terminal 13A Terminal 13B Terminal 13h Mounting hole 2 Busbar 2BS Back side 2S Front side 21 First connection part 21h Through hole 22 Extension part 23 Second connection part 23h Through hole 24 Extension part 2EX Opening 3 First member 31 Cover part 31c Curved surface 32 Rib 32A Rib 32C Rib 32D Rib 33 Locking part 33AR Arm part 33PR Protruding part 4 Second member 41 Support part 41a First surface 41b Second surface 41c Stepped surface 41L Rib 41R Recess 41R1 Recess 41R2 Recess 42 Holding part 42PR Protruding part 43 Projection part 44 Projection part 71 Fastening member 72 Fastening member 81 Mating part 82 Mating part SL Slit

Claims

1. An electrical junction box comprising: a first member having a busbar, a first rib that abuts against the busbar, and a locking portion; a second member having a holding portion that maintains the locked state by the locking portion, and a support portion that is in contact with the back surface of the busbar, wherein the first rib abuts against the surface of the busbar, and the first rib, together with the support portion, holds the busbar by sandwiching it.

2. The support portion further comprises a second rib that abuts against the busbar, and the first rib, together with the second rib, holds the busbar by sandwiching it, as described in claim 1.

3. An electrical junction box according to claim 1 or claim 2, further comprising an electronic component, wherein the busbar has a fastening portion, the electronic component is fastened to the fastening portion, and the first rib is adjacent to the fastening portion.

4. The electrical junction box according to claim 1 or claim 2, wherein the first member further comprises a third rib that abuts against the busbar.

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