Electrical junction box

Abstract

To provide an electrical junction box that makes it easy to keep the busbar position constant. [Solution] An electrical junction box of one embodiment comprises a busbar, a first member, and a second member. The first member has a first projection that presses against the busbar in a first direction. The second member has a first recess corresponding to the first projection and a mating portion that can be mated with an external connector. The mating portion is aligned continuously with respect to the first recess in a second direction. The busbar is positioned in the first recess and extends from the first recess to at least a portion of the mating portion. The second direction intersects the first direction.

Description

Technical Field

[0001] This disclosure relates to an electrical connection box.

Background Art

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

[0003] For example, Patent Document 1 discloses "an electrical connection box including a bottom wall, a side wall surrounding the outer peripheral side of the bottom wall, a connector mounting portion provided on the side wall, and a plurality of bus bars." The plurality of bus bars are laminated in a mutually insulated state and embedded inside. Each bus bar is provided with a terminal piece having a bent portion bent in a crank shape. The terminal piece is arranged in multiple stages by laminating the plurality of bus bars, and the tip side thereof protrudes into the connector mounting portion. Further, the connector mounting portion is integrally formed with the bottom wall and the side wall in accordance with the shape of a connector mounted on the connector mounting portion. The tip side of the protruding terminal piece is arranged in accordance with the shape of the connector.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the electrical connection box disclosed in Patent Document 1, the tip side of the protruding terminal piece is arranged in accordance with the shape of a connector mounted on the connector mounting portion. Therefore, in the electrical connection box disclosed in Patent Document 1, an operation of mounting a connector on the connector mounting portion (hereinafter, also referred to as "fitting operation") can be performed. However, when embedding busbars in the connector mounting area, the position of the embedded busbars can be difficult to determine consistently. The busbar described in Patent Document 1 is held in a cantilevered state relative to the mold during the integral molding of the electrical junction box. When the electrical junction box is integrally molded in this state, residual stress may act on the busbar embedded in the electrical junction box.

[0006] One embodiment aims to provide an electrical junction box that makes it easy to keep the busbar position constant. [Means for solving the problem]

[0007] An electrical junction box according to one embodiment comprises a busbar, a first member, and a second member. The first member has a first projection that presses against the busbar in a first direction. The second member has a first recess corresponding to the first projection and a mating portion that can be mated with an external connector. The mating portion is aligned continuously with respect to the first recess in a second direction. The busbar is positioned in the first recess and extends from the first recess to at least a portion of the mating portion. The second direction intersects the first direction. [Effects of the Invention]

[0008] According to one embodiment, it is easy to keep the position of the busbar constant. [Brief explanation of the drawing]

[0009] [Figure 1] A perspective view showing an electrical junction box of an embodiment. [Figure 2] An exploded view showing a portion of the electrical junction box of the embodiment. [Figure 3] A perspective view showing a portion of the electrical junction box in Figure 1, specifically the F3-F3 cross-section. [Figure 4] A view of a portion of the electrical junction box in Figure 1, taken from the direction of F4. [Figure 5] Figure 1 shows the electrical junction box viewed from the direction of F4. [Figure 6] A cross-sectional view showing the F6-F6 section of the electrical junction box in Figure 5. [Figure 7] A cross-sectional view showing the F7-F7 section of the electrical junction box in Figure 6. [Figure 8] Cross-sectional view I shows the mating state of the electrical connection box and the external connector EC of the embodiment. [Figure 9] Cross-sectional view II shows the mating state of the electrical connection box and the external connector EC of the embodiment. [Figure 10] A cross-sectional view showing the F10-F10 section of the electrical junction box in Figure 8. [Modes for carrying out the invention]

[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 first member 3 presses down on the busbar 2. The +Z direction is the opposite direction 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 +X direction is the direction in which the first recessed portion 41r and the fitting portion 41f of the second member 4 are aligned. The -X direction is the opposite direction 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". The +Y direction and the -Y direction are directions that intersect (for example, are orthogonal to) the X direction and the Z direction. The +Y direction is the direction in which one locking portion 32 is aligned with the other locking portion 32. The +Y direction is also the direction in which the busbar 2 positioned in the first recessed portion 41r extends. In the following, when the +Y direction and -Y direction are not distinguished, they will simply be referred to as the "Y direction." The Z direction is an example of the "first direction." The X direction is an example of the "second direction." The Y direction is an example of the "third direction."

[0012] Hereinafter, when the X direction and the Y direction are not distinguished, it may be referred to as the "horizontal direction". However, these expressions are for convenience of explanation and do not limit the installation posture of the electrical connection box 100.

[0013] <First Embodiment> Hereinafter, the electrical connection box 100 of one embodiment will be described with reference to the drawings. As shown in FIGS. 1 to 3, the electrical connection box 100 includes a bus bar 2, a first member 3, a second member 4, and a fixed terminal 5. For example, the electrical connection box 100 may be mounted on a mobility unit such as an electric vehicle.

[0014] (Configuration of Bus Bar) As shown in FIGS. 1 to 3, the bus bar 2 is a wiring member (electrical connection member) that electrically connects a plurality of electrical components. The bus bar 2 is made of metal (for example, copper or copper alloy) and has conductivity. In this embodiment, the bus bar 2 is electrically connected to a target (electronic component, other component or device) via the fixed terminal 5. At least a part of the bus bar 2 (for example, the extending portion 21 and the connecting portion 22) is supported by the main body portion 41 of the second member 4.

[0015] The bus bar 2 has, for example, an extending portion 21 and a connecting portion 22. In this embodiment, each of the extending portion 21 and the connecting portion 22 is plate-shaped. That is, each of the extending portion 21 and the connecting portion 22 has a flat rectangular cross-sectional shape.

[0016] (Extending Portion) The extension part 21 is a part that extends in a predetermined direction and is provided to form an energization path from the external connector EC fitted at the fitting part 41f to the connection part 22. The extension part 21 in this embodiment includes a first extension part 21A and a second extension part 21B. The second extension part 21B continuously extends along the third direction (for example, the Y direction) from one end of the first extension part 21A. The first extension part 21A is arranged in the first recessed part 41r as shown in FIGS. 2-3 and FIG. 6 and extends along the second direction (for example, the X direction). At that time, the first extension part 21A extends from the first recessed part 41r to at least a part of the fitting part 41f.

[0017] Note that the fitting part 41f is a connection part that can be fitted with the external connector EC. The fitting part 41f may protrude outward from the second member 4. The fitting part 41f in this embodiment is a second recessed part 41re having a recess corresponding to the outer shape of the external connector EC as shown in FIGS. 1-2, FIGS. 4-5, and FIGS. 8-9.

[0018] In this embodiment, the insertion and extraction direction, which is the direction in which the external connector EC is inserted and extracted with respect to the fitting part 41f, is along the second direction.

[0019] The first extension part 21A may have a protrusion part 21p at one end facing the external connector EC. For example, the protrusion part 21p is formed into a predetermined shape by press forming such as bending or cutting a metal plate as the base material. When the external connector EC is fitted, the protrusion part 21p guides the protrusion part 21p to the fitting part 41f while lifting a part of the external connector EC in the +Z direction (see FIGS. 8-9). The protrusion part 21p presses the inner peripheral surface of the fitted external connector EC in the -Z direction (see FIG. 9). For example, the protrusion part 21p presses the female terminal FT of the fitted external connector EC in the -Z direction.

[0020] The extension part 21 may have an opening corresponding to the protrusion part 43. For example, the second extension part 21B in this embodiment has an opening 21op that opens in the Z direction.

[0021] (Connection part) The connection portion 22 is the part that electrically connects the busbar 2 to the object (electronic component, other component or device). Examples of the connection portion 22 include a first type connection portion 22A and a second type connection portion 22B. In this embodiment, the connection portion 22 is a first type connection portion 22A. In this embodiment, the connection portion 22 may include both connection portion 22A and connection portion 22B. The connection portion 22 (connection portion 22A, connection portion 22B) has an insertion hole 22h through which the fixed terminal 5 passes.

[0022] The connection section 22A is the part that electrically connects the busbar 2 and the electronic component via the external connector EC. The connection section 22A is provided on a part of the busbar 2.

[0023] The connection section 22B is the part that electrically connects the busbar 2 to other components or equipment via an external connector EC. The connection section 22B is provided on a part of the busbar 2.

[0024] Furthermore, the busbar 2 may have, for example, an extension. The extension is a portion of the busbar 2 that is extended for the purpose of increasing the heat dissipation area and / or increasing the heat capacity for heat storage (heat absorption). The extension is also a portion that is not used for electrical connections.

[0025] In this embodiment, the first recess 41r of the second member 4 restricts the movement of the first extension 21A of the busbar 2 in the second direction. The dimension of the first recess 41r in the second direction is the dimension of the busbar 2 in the second direction plus α. α is appropriately determined by the material of the busbar 2 and / or the dimension of the first extension 21A in the second direction. When the busbar 2 has an extension, the thermal expansion of the first extension 21A is easily suppressed due to improved heat dissipation in the busbar 2. Therefore, the value of α in the dimension of the first recess 41r tends to approach 0, and the movement of the busbar 2 in the third direction is suppressed. As a result, the position of the busbar 2 tends to be kept constant.

[0026] Furthermore, it is preferable that the dimension of the first extension portion 21A in the third direction (e.g., the Y direction) is smaller than the dimension of the second extension portion 21B in the second direction (e.g., the X direction). Compared to the case where these dimensions are the same, under this condition, thermal expansion of the first extension portion 21A in the second direction is more easily suppressed. Therefore, the value of α in the dimension of the first recess portion 41r tends to approach 0, and the movement of the busbar 2 in the third direction is suppressed. As a result, the position of the busbar 2 tends to be kept constant.

[0027] Examples of electronic components electrically connected by busbar 2 are shown below. These electronic components include fuses, relays (e.g., mechanical or semiconductor relays), resistors (e.g., pre-charge resistors), capacitors, various sensors (e.g., current sensors or voltage sensors), ferrite cores, etc.

[0028] (Composition of the first component) As shown in Figures 1 and 2, the first member 3 is a member that protects the busbar 2 from the outside. The first member 3 can be locked 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 main body 31 and at least one locking portion 32. For example, the first member 3 in this embodiment has two locking portions 32. Of the two locking portions 32, one locking portion 32 is located on the -Y direction side, and the other locking portion 32 is located on the +Y direction side. That is, the other locking portion 32 is aligned in the +Y direction with respect to the first locking portion 32 (see Figure 7).

[0029] (Main body) The main body portion 31 covers the main body portion 41 and the busbar 2 of the second member 4 from the +Z direction. The main body portion 31 has a recessed portion 31r that is recessed in the direction opposite to the direction facing the busbar 2 (for example, the +Z direction). The main body portion 31 also has a projection portion 31p in a part of the recessed portion 31r that protrudes toward the busbar 2. In the first direction, the projection portion 31p presses against at least a part of the busbar 2. In this embodiment, as shown in Figure 8, the projection portion 31p presses against the first extension portion 21A in the first direction.

[0030] (Locking part) The locking portion 32 is used to lock the first member 3 and the second member 4. An example of the locking portion 32 is a snap-fit ​​claw. The snap-fit ​​claw has an arm portion 32AR and a protruding portion 32PR which is a part of the arm portion. The protruding portion 32PR protrudes from the arm portion 32AR in a direction intersecting the direction in which the arm portion 32AR extends (for example, the Y direction). In this embodiment, the protruding portion 32PR protrudes toward the second member 4 in the Y direction and locks into the holding portion 42 described later. When the protruding portion 32PR is pressed when locking into the holding portion 42, the arm portion 32AR oscillates in a predetermined direction.

[0031] (Structure of the second component) As shown in Figures 1 and 2, the second member 4 is a support member that supports the busbar 2. The second member 4 is made of, for example, synthetic resin and has insulating properties. The second member 4 comprises, for example, a main body portion 41, at least one or more holding portions 42, and a projection portion 43. For example, the second member 4 in this embodiment comprises two holding portions 42. Of the two holding portions 42, one holding portion 42 is located on the -Y direction side, and the other holding portion 42 is located on the +Y direction side. That is, the other holding portion 42 is aligned in the +Y direction with respect to the one holding portion 42 (see Figure 7).

[0032] (Main body) The main body portion 41 is a retaining member to which various components (e.g., busbar 2, fixed terminal 5, etc.) can be attached. The main body portion 41 forms the main part of the second member 4. The main body portion 41 forms the base portion (insulating base portion) of the second member 4. The main body portion 41 may have a plurality of ribs 41L. The ribs 41L play a role in improving the rigidity of the main body portion 41.

[0033] The main body portion 41 has a first recessed portion 41r and a mating portion 41f. In the main body portion 41, the mating portion 41f and the first recessed portion 41r are integrally molded. As described above, the mating portion 41f is used as a connection portion with the external connector EC. The mating portion 41f is recessed or protrudes in a second direction (e.g., the X direction) to correspond to the external connector. The mating portion 41f is also arranged continuously with respect to the first recessed portion 41r in the second direction (e.g., the X direction). In this embodiment, an example of the mating portion 41f is the second recessed portion 41re. The second recessed portion 41re is recessed in the direction opposite to the direction facing the external connector EC (e.g., the -X direction).

[0034] (First depression) The first recess 41r is recessed in the direction opposite to the direction facing the bus bar 2 (for example, the -Z direction). The first recess 41r is formed to accommodate at least a portion of the bus bar 2. Figure 4 shows the first recess 41r as seen through the fitting portion 41f. The first recess 41r, together with the projection 31p, clamps the bus bar 2 (see Figures 5-6).

[0035] The first recessed portion 41r is a recess corresponding to the projection portion 31p. The first recessed portion 41r has a bottom surface 41r1 and a side surface 41r2.

[0036] The base surface 41r1 is a surface facing the +Z direction. The base surface 41r1 extends horizontally. The first extension portion 21A runs along the base surface 41r1.

[0037] The side surface 41r2 is a surface that extends from the bottom surface 41r1 along the +Z direction. The side surface 41r2 in the first recess 41r extends from a part of the bottom surface 41r1 along the +Z direction.

[0038] (Second depression) As described above, the second recess 41re is a recess corresponding to the external connector EC (see Figures 1, 8-9). The second recess 41re has a bottom surface 41re1 and a side surface 41re2.

[0039] The bottom surface 41re1 is the surface facing the +X direction. The bottom surface 41re1 extends in a direction that intersects the horizontal direction mentioned above. The mated external connector EC is in contact with the bottom surface 41re1.

[0040] The side circumferential surface 41re2 is a surface that extends from the bottom surface 41re1 along the +X direction. The side circumferential surface 41re2 in the second recess 41re surrounds the bottom surface 41re1. In addition, the side circumferential surface 41re2 covers at least a portion of the outer circumferential surface of the mated external connector EC.

[0041] (holding part) The holding portion 42 is used to maintain the locked state between the first member 3 and the second member 4 by the locking portion 32. An example of the holding portion 42 is the protruding portion 42PR. The protruding portion 42PR protrudes outward toward the second member 4 in a direction intersecting the direction in which the arm portion 32AR extends. In this 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 together, the protruding portion 42PR causes the arm portion 32AR to oscillate in a predetermined direction.

[0042] Here, we will describe the procedure for the first recessed portion 41r to clamp the busbar 2 together with the projection portion 31p by locking the first member 3 and the second member 4 via the locking portion 32. The method of clamping the busbar 2 is not particularly limited.

[0043] First, as shown in Figure 7, the worker brings the projection 31p into contact with the first extension 21A of the busbar 2 when locking the first member 3 and the second member 4. Next, the worker pushes the first member 3 in the -Z direction so that the projection 31p presses against the busbar 2 positioned in the first recess 41r. After that, the locking portion 32 locks the first member 3 and the second member 4 together. At this time, the projection 31p, together with the first recess 41r, grips the busbar 2.

[0044] When the locking portion 32 maintains the pressure on the busbar 2 by the projection 31p, a reaction force continues to act on the projection 31p in the opposite direction to the direction of pressure on the busbar 2 (for example, the -Z direction). At this time, a force that balances this reaction force acts as a component force on each locking portion 32, making it easier to maintain the locked state between the first member 3 and the second member 4. After locking, the movement of the busbar 2 in the first direction is restricted by the projection 31p and the first recess 41r. In addition, the movement of the busbar 2 in the second direction is restricted by the side surface 41r2 of the first recess 41r.

[0045] (protrusion) As shown in Figures 2 and 6, the projection 43 serves as a guide for the busbar 2 during assembly. As described above, the presence of an opening 21op or notch in the busbar 2 suppresses the movement of the busbar 2 in the third direction. Suppressing the movement of the busbar 2 in the third direction suppresses the loosening of the engaging member (e.g., nut) that engages with the fixed terminal 5. When the busbar 2 has an opening 21op, the projection 43 protrudes outward through the opening 21op to the second member 4. The projection 43 is aligned with the first recess 41r on the opposite side from the fitting portion 41f. In this embodiment, the projection 43 may be integrally molded with the fitting portion 41f and the first recess 41r in the main body 41, or they may be separate parts.

[0046] (Connection terminals) As shown in Figure 2, the fixed terminal 5 is a component for electrically connecting the busbar 2 to the object (electronic component, other component or device). A corresponding engaging member (e.g., a nut) is engaged with the fixed terminal 5. The fixed terminal 5 is provided on the second member 4. The fixed terminal 5 provided on the second member 4 protrudes through the insertion hole 22h to the extent that it does not come into contact with the first member 3.

[0047] After the fixed terminal 5 is passed through the insertion hole 22h of the busbar 2, the busbar 2 is electrically connected to the object by engaging an engaging member (e.g., a nut) with the tip of the fixed terminal 5 through which the busbar 2 has been inserted. The circumferential surface of the fixed terminal 5 has screw grooves. The engaging member has a through hole. The engaging member has screw grooves on the inner circumferential surface of the through hole.

[0048] (Mechanism of Action and Effects) In this embodiment, the electrical junction box 100 comprises a bus bar 2, a first member 3, and a second member 4. The first member 3 has a first projection (projection 31p) that presses against the bus bar 2 in a first direction (for example, the Z direction). The second member 4 has a first recess (first recess 41r) corresponding to the first projection and a mating portion 41f that can be mated with an external connector EC. The mating portion 41f is aligned continuously with respect to the first recess in a second direction. The bus bar 2 is positioned in the first recess and extends from the first recess to at least a portion of the mating portion 41f. The second direction intersects the first direction.

[0049] With this configuration, the first projection (projection 31p) presses against the busbar 2 positioned in the first recess. The pressing of the first projection (projection 31p) makes it easier to maintain a constant position for the busbar 2 extending to the fitting portion 41f. Thus, in the electrical junction box 100 according to this embodiment, it is easy to maintain a constant position for the busbar.

[0050] Furthermore, according to this embodiment, the first recess (first recess portion 41r) clamps the bus bar 2 together with the first projection (projection portion 31p). With this configuration, the position of the bus bar 2 extending to the fitting portion 41f is more easily kept constant.

[0051] Furthermore, according to this embodiment, the first member 3 is provided with a locking portion 32, and the second member 4 is further provided with a holding portion 42 that maintains the locked state by the locking portion 32. With this configuration, the locked state is maintained and the pressure on the bus bar 2 is more easily maintained. When the pressure on the first projection (projection portion 31p) is maintained, the position of the bus bar 2 extending to the fitting portion 41f is more easily kept constant.

[0052] Furthermore, according to this embodiment, the mating portion 41f has a second recess (second recess portion 41re) corresponding to the external connector EC. The outer circumferential surface of the external connector EC, when mated in the second direction (for example, the X direction), is covered by the second recess. With this configuration, the shape of the second recess (second recess portion 41re) suppresses the movement of the external connector EC in the first direction and / or the third direction. Therefore, the external connector EC is easily mated when the busbar 2 is in a fixed position.

[0053] Furthermore, according to this embodiment, the busbar 2 has a second projection (projection 21p) that presses against the external connector EC in the first direction. With this configuration, the movement of the external connector EC in the first direction is suppressed.

[0054] Furthermore, according to this embodiment, the second member 4 has a third projection (projection 43) that is aligned with the first recess (first recess portion 41r) on the opposite side from the fitting portion 41f. The bus bar 2 includes a first extension portion 21A and a second extension portion 21B. The first extension portion 21A extends across the fitting portion 41f, and the second extension portion 21B extends continuously from one end of the first extension portion 21A. The second extension portion 21B has an opening 21op, and the third projection protrudes outward from the second member 4 through the opening 21op. With this configuration, the projection 43 provided by the second member 4 passes through the opening 21op. When the external connector EC is fitted to the fitting portion 41f, the bus bar 2 can move in the second direction and / or the third direction due to the sliding of the external connector EC against the fitting portion 41f (see Figure 10). According to this embodiment, the projection 43 passes through the opening 21op, thereby suppressing the movement of the busbar 2 in the second direction and / or the third direction. As a result, the position of the busbar 2 is more easily kept constant. Note that the female terminal FT of the external connector EC is omitted in Figure 10.

[0055] (Variation 1) In this modified example, the extended portion 21 had an opening 21op. On the other hand, in this modified example, the extended portion 21 may have a notch corresponding to the projection 43 instead of the opening 21op. When the notch and the projection 43 come into contact, the movement of the busbar 2 in the second direction and / or the third direction is suppressed. As a result, the position of the busbar 2 is more easily kept constant.

[0056] (Modification 2) The main body 41 may have, for example, a housing portion that holds a part of the busbar 2. The housing portion is a recess in the main body 41 that is recessed in the direction opposite to the direction facing the busbar 2 (for example, the -Z direction). When viewed from the +Z direction side, the housing portion has a shape that corresponds to the shape of the busbar 2 to be housed. In this modified example, the housing portion holds at least a part of the busbar 2 (for example, the extension portion 21). When the busbar 2 is housed in the housing portion, the movement of the busbar 2 in the second direction and / or the third direction is suppressed. As a result, the position of the busbar 2 is more easily kept constant.

[0057] (Variation 3) The extension portion 21 may include a third extension portion that extends in a different direction from the first extension portion 21A and the second extension portion 21B, thereby allowing the busbar 2 to bend. By bringing the busbar 2 into contact with the second member 4 at the bending point, the movement of the busbar 2 in a predetermined direction is suppressed. As a result, the position of the busbar 2 is more easily kept constant.

[0058] 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. [Explanation of Symbols]

[0059] 100 Electrical junction box 2 bus bars 21 Stretching section 21A First extension section 21p protrusion 21B Second extension section 21op aperture 22 Connection part 22A Connection 22B Connection section 22h Through hole 3. First component 31 Main body 31p protrusion 31r recessed area 32 Locking part 32AR arm 32PR protrusion 4. Second Member 41 Main body 41L Rib 41r First depression 41r1 bottom 41r2 side 41f Fitting section 41re Second recess 41re1 bottom 41re2 Side surface 42 Holding part 42PR protrusion 43 Protrusion 5 Fixed terminal EC external connector FT female connector

Claims

1. Bus bar and, A first member having a first projection that presses against the busbar in a first direction, A second member having a first recess corresponding to the first projection and a mating portion that can be mated with an external connector, Equipped with, The fitting portion is arranged continuously in the second direction with respect to the first recess, The busbar is positioned in the first recess and extends from the first recess to at least a portion of the fitting portion, The second direction intersects the first direction. Electrical junction box.

2. The first recess, together with the first projection, clamps the busbar. The electrical junction box according to claim 1.

3. The first member is equipped with a locking portion, The second member further comprises a holding portion that maintains the locked state by the locking portion. The electrical junction box according to claim 2.

4. The mating portion has a second recess corresponding to the external connector, The outer surface of the external connector that is fitted in the second direction is covered by the second recess. An electrical junction box according to any one of claims 1 to 3.

5. The busbar has a second projection that presses against the external connector in the first direction. An electrical junction box according to any one of claims 1 to 3.

6. The second member has a third projection that is aligned with respect to the first recess on the opposite side from the fitting portion, The bus bar includes a first extension and a second extension, The first extension extends across the fitting portion, The second extension extends continuously from one end of the first extension, The second extension has an opening, The third projection protrudes outward from the second member through the opening. An electrical junction box according to any one of claims 1 to 3.

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