Electrical junction box

Abstract

To provide an electric connection box excellent in workability of work for inserting an electric wire into an opening of the electric connection box.SOLUTION: The electrical connection box 1 includes a box-shaped housing side 1a having a space therein, an external part 50 to be attached to electric wires 40 to be inserted into and out of the housing side 1a, and a locking part 60 to be attached to the external part 50 so as to be bound and locked to the housing side 1a. The housing side 1a has an opening 3 through which the electrical wire 40 can be inserted into and out of the housing side 1a. The exterior component 50 is disposed so as to pass through the opening 3. The locking component 60 is locked to the housing side 1a inside the housing side 1a, and is configured to hold the exterior component 50 in the opening 3.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an electrical connection box that includes a box-shaped housing, an exterior part that is to be attached to electric wires that are to be inserted into and out of the housing, and a locking part that is attached so as to be bound to the exterior part and is locked to the housing. [Background technology]

[0002] Conventionally, electrical junction boxes capable of accommodating various electronic components such as relays, fuses, and fusible links (for example, relay boxes mounted on vehicles such as automobiles) have been proposed. This type of electrical junction box generally has openings that allow electric wires connected to these electronic components to pass inside and outside (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-182314 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-described type of electrical junction box generally includes a case for accommodating electronic components and a cover attached to the case. The case and cover are assembled together to form an opening through which electric wires can be inserted. In actual assembly work, a worker assembles the case and cover while holding the electric wires so that they are positioned in the opening. However, when a large number of electric wires or thick electric wires are used in the electrical junction box, it is difficult to improve the workability of the assembly work because, as described above, a large force is required to hold the electric wires in the opening.

[0005] An object of the present invention is to provide an electrical junction box that is easy to insert electric wires into openings in the box. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the electrical junction box according to the present invention has the following features.

[0007] An electrical connection box including a box-shaped housing having a space inside, an exterior part to be attached to an electric wire to be inserted into the inside and outside of the housing, and a locking part attached to be bound to the exterior part and locked to the housing, The housing includes: an opening through which the electric wire can be inserted into and out of the housing; The exterior part is positioned to pass through the opening, The locking part is The exterior component is configured to be engaged with the housing inside the housing and to hold the exterior component in the opening. It must be an electrical junction box. [Effects of the Invention]

[0008] According to the electrical junction box of the present invention, an exterior component (e.g., a corrugated tube) is attached to an electric wire to be inserted into and out of the electrical junction box, and a locking component (e.g., a clip with a band) is attached to the exterior component. The locking component is locked to the housing and, together with the exterior component, holds the electric wire in the opening. This allows the electric wire to be held in the opening of the housing without the need for manual holding by an operator, as in conventional methods. Furthermore, because the locking component is fastened to the exterior component, the locking component can be properly attached to the exterior component by tightening it, regardless of manufacturing variations (i.e., manufacturing dimensional tolerances) in the exterior component and the locking component, compared to when the locking component is attached to the exterior component using a general locking protrusion or the like. Therefore, the electrical junction box of the present invention provides excellent workability when inserting an electric wire into the opening of the electrical junction box.

[0009] The present invention has been briefly described above. The details of the present invention will become more apparent from the detailed description of the invention set forth below, taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an exploded perspective view of an electrical junction box according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view for explaining an operation of holding a corrugated tube attached to an electric wire on the inner peripheral surface of an upper protrusion of the main body case shown in part A of FIG. [Figure 3] FIG. 3 is a side view showing a clip fixed to a corrugated tube by bundling. [Figure 4] 4 is a perspective view seen from a different angle (below) from that of FIG. 2 to explain the operation of holding a corrugated tube attached to an electric wire on the inner peripheral surface of the upper protrusion of the main body case shown in part A of FIG. 1. [Figure 5] FIG. 5 is a view of the periphery of the locking hole of the main body case shown in FIG. 4 as seen from below (however, the corrugated tube is not shown). [Figure 6] FIG. 6 is a cross-sectional view taken along the line BB in FIG. [Figure 7] FIG. 7 is a cross-sectional view showing how the engagement between the clip fixed to the corrugated tube and the locking hole of the main body case and the engagement between the main body case and the lower cover are independent of each other. DETAILED DESCRIPTION OF THE INVENTION

[0011] <Embodiment> Hereinafter, with reference to the drawings, an electric junction box 1 according to an embodiment of the present invention shown in Fig. 1 will be described. The electric junction box 1 is typically a relay box that is attached to a vehicle frame or the like and houses electronic components 2 such as relays.

[0012] As shown in Fig. 1, the electrical junction box 1 is a box-shaped body including a main body case 10 in which electronic components 2 (and other components) such as relays are housed, a lower cover 20 attached to the lower end of the main body case 10 so as to close the lower opening (opening end) of the main body case 10, and an upper cover 30 attached to the upper end of the main body case 10 so as to close the upper opening (opening end) of the main body case 10. Each of the main body case 10, the lower cover 20, and the upper cover 30 is a resin molded body. The main body case 10, the lower cover 20, and the upper cover 30 form a housing 1a of the electrical junction box 1.

[0013] Openings 3, each having a generally cylindrical shape that protrudes outward from the housing 1a and communicates between the inside and outside of the housing 1a, are formed at multiple locations (three locations in this example) on the housing 1a of the electrical junction box 1. An electric wire 40 (see FIGS. 2 and 4) fitted with a corrugated tube 50 is inserted into each opening 3 so as to traverse the inside and outside of the housing 1a. An end of the electric wire 40 located inside the housing 1a is connected to an electronic component 2 housed in the main case 10.

[0014] For the sake of convenience, the following definitions are used for the "up-down direction," "front-rear direction," and "left-right direction" as shown in FIG. 1 and other figures. The "up-down direction," "front-rear direction," and "left-right direction" are mutually orthogonal. Note that the "up-down direction," "front-rear direction," and "left-right direction" do not necessarily have to coincide with the up-down direction, front-rear direction, and left-right direction of the vehicle when the electrical junction box 1 is mounted on the vehicle. The configurations of the main body case 10, lower cover 20, and upper cover 30 that constitute the housing 1a of the electrical junction box 1 will be described below in order.

[0015] First, we will explain the main body case 10. As shown in Fig. 1, the main body case 10 has a cylindrical peripheral wall 11 that has a predetermined shape when viewed from the top and bottom and extends in the vertical direction. A plurality of storage sections 12 are defined in the internal space at the top of the main body case 10 defined by the peripheral wall 11, and each of the plurality of storage sections 12 contains various electronic components 2 (and other components) such as relays.

[0016] Upper protrusions 13, each having a semicircular arc shape (semi-cylindrical shape) that protrudes upward and protrudes from the peripheral wall 11 to the outside of the main body case 10, are provided at multiple locations (three locations in this example) around the lower edge of the peripheral wall 11. When the main body case 10 and the lower cover 20 are completely assembled, the upper protrusions 13 and a lower protrusion 23 (described later) of the lower cover 20 are combined with each other to form the opening 3.

[0017] As shown in Figures 4 and 5, a plurality of protrusions 16 are formed on the inner circumferential surface of the upper protrusion 13 (the lower surface having a semicircular arc shape and recessed upward). When the casing body 10 and the lower cover 20 are completely assembled, each of the protrusions 16 engages with a recess 52 of the corrugated tube 50 (see Figure 6). In this example, since the upper protrusion 13 extends in an oblique direction that is not perpendicular to the up-and-down direction (i.e., the direction in which the casing body 10 is removed from the mold when injection molding the mold), each of the protrusions 16 does not have a long protrusion shape extending in the circumferential direction over the entire circumferential area of ​​the inner circumferential surface of the upper protrusion 13, but rather has a short protrusion shape extending in a direction inclined from the circumferential direction only at the circumferential end of the inner circumferential surface of the upper protrusion 13, in consideration of ease of removal from the mold, as shown in Figure 5.

[0018] As shown in FIGS. 4, 5, and 7, plate-shaped stay portions 14 are formed near each of the multiple locations on the peripheral wall 11 where the multiple upper protrusions 13 are provided, extending from the inner surface of the peripheral wall 11 (the surface facing the interior of the housing 1a) toward the interior of the housing 1a. The stay portions 14 have flat plate-like portions at their distal ends that are positioned opposite, with a small gap between them, the outer periphery of the electric wire 40 (corrugated tube 50) crossing the opening 3. A locking hole 15 is formed in the flat plate-like portion, penetrating the plate-like portion in the thickness direction. The stay portions 14 are located away from the boundary between the main case 10 and the lower cover 20, and are not part of this boundary. When the main case 10 and the lower cover 20 are completely assembled, a clip portion 61 of a band-attached clip 60 (hereinafter simply referred to as "clip 60") fixed to the corrugated tube 50 by bundling is to be engaged with the locking hole 15 (see FIG. 7).

[0019] Engaged portions 17 are provided at multiple locations (seven locations in this example) in the circumferential direction on the outer surface of the lower edge of peripheral wall 11, excluding the locations where upper protrusions 13 are provided. When main body case 10 and lower cover 20 are completely assembled, the multiple engaged portions 17 will engage with multiple engaging portions 24 (described later) provided on lower cover 20 (see FIG. 7).

[0020] Similarly, engaged portions 18 are provided at multiple locations (three locations in this example) in the circumferential direction on the outer surface of the upper edge of the peripheral wall 11. When the main body case 10 and the upper cover 30 are completely assembled, the engaged portions 18 will engage with multiple engaging portions 33 (described later) provided on the upper cover 30, respectively.

[0021] Next, we will explain the lower cover 20. The lower cover 20 functions to close the lower opening (opening end) of the main body case 10, and also functions to form the opening 3 in cooperation with the main body case 10. As shown in Fig. 1, the lower cover 20 is composed of a bottom plate portion 21 having an outer peripheral shape corresponding to the lower opening of the main body case 10, and a peripheral wall 22 extending upward (towards the main body case 10) from the outer peripheral edge of the bottom plate portion 21.

[0022] Lower protrusions 23 having a downwardly protruding semicircular arc shape (semicylindrical shape) and protruding from the peripheral wall 22 to the outside of the lower cover 20 are provided on the upper edge of the peripheral wall 22 at multiple locations (three locations in this example) in the circumferential direction corresponding to the locations where the multiple upper protrusions 13 of the main body case 10 are provided. Furthermore, engaging portions 24 are provided on the outer surface of the upper edge of the peripheral wall 22 at multiple locations (seven locations in this example) in the circumferential direction corresponding to the locations where the multiple engaged portions 17 of the main body case 10 are provided.

[0023] Next, the upper cover 30 will be described. The upper cover 30 functions to close the upper opening (open end) of the main body case 10. As shown in FIG. 1, the upper cover 30 is composed of a top plate portion 31 having an outer peripheral shape corresponding to the upper opening of the main body case 10, and a peripheral wall 32 extending downward (toward the main body case 10) from the outer peripheral edge of the top plate portion 31. On the outer surface of the lower edge of the peripheral wall 32, engaging portions 33 are provided at each of multiple locations (three locations in this example) in the circumferential direction corresponding to the locations where the multiple engaged portions 18 of the main body case 10 are provided. The configurations of the main body case 10, the lower cover 20, and the upper cover 30 that constitute the housing 1a of the electrical junction box 1 have been described above.

[0024] Next, a description will be given of the assembly of the main body case 10 and the lower cover 20, and the assembly of the main body case 10 and the upper cover 30. The order of these assembly steps does not matter.

[0025] To assemble the main body case 10 and the upper cover 30, first, the main body case 10 and the upper cover 30 are positioned so that the main body case 10 is located below the upper cover 30, as shown in Fig. 1. Next, the main body case 10 and the upper cover 30 are brought closer together in the vertical direction, and the upper edge of the peripheral wall 11 of the main body case 10 is fitted with the lower edge of the peripheral wall 32 of the upper cover 30 so that the multiple engaged portions 18 of the main body case 10 engage with the multiple engaging portions 33 of the upper cover 30, respectively. When the assembly of the main body case 10 and the upper cover 30 is complete, the engaged portions 18 and the engaging portions 33 are engaged with each other, preventing the main body case 10 and the upper cover 30 from being separated in the vertical direction.

[0026] 2 and 4, a corrugated tube 50 made of resin and having a predetermined length is attached to the outer periphery of the electric wires 40 (actually, an electric wire bundle made up of a plurality of electric wires extending from a plurality of electronic components 2) extending downward from the electronic component 2 housed in the housing portion 12 of the main body case 10 so as to pass through the inside of the main body case 10. Annular convex portions 51 and annular concave portions 52 are formed alternately on the outer periphery of the corrugated tube 50 along the axial direction of the corrugated tube 50 (see FIGS. 3 and 6).

[0027] 2 to 4, a resin clip 60 is attached to the outer periphery of the corrugated tube 50 at a predetermined position in the extension direction of the corrugated tube 50. The clip 60 includes a clip portion 61 and a band-shaped binding band portion 62. The clip 60 is fixed to the corrugated tube 50 by wrapping the binding band portion 62 around the outer periphery of the corrugated tube 50 and fastening (binding) it, with the clip portion 61 protruding from the outer periphery of the corrugated tube 50.

[0028] Next, as shown in Fig. 7, the clip portion 61 of the clip 60 fixed to the corrugated tube 50 is inserted into and locked with the locking hole 15 provided in the stay portion 14 of the casing 10. This allows the electric wire 40 to be temporarily held in a position in which the electric wire 40 attached to the corrugated tube 50 extends along the inner circumferential surface of the upper protruding portion 13 of the casing 10 (i.e., in a position in which the electric wire 40 is inserted into the opening 3 of the housing 1a), without requiring manual holding by an operator as in the conventional case. Furthermore, because the clip 60 (locking component) is attached by being bound to the corrugated tube 50, the clip 60 can be properly attached to the corrugated tube 50 by fastening the clip 60 to the corrugated tube 50, regardless of manufacturing variations (i.e., manufacturing dimensional tolerances) in the corrugated tube 50 and the clip 60, as compared to when a locking component is attached to the corrugated tube 50 using an attachment lock protrusion or the like. Furthermore, the clip 60 is engaged with the main case 10 (housing 1a) before the main case 10 and the lower cover 20 are assembled together, independently of the assembly of the main case 10 and the lower cover 20. Therefore, manufacturing variations in the clip 60 do not affect the assembly of the main case 10 and the lower cover 20.

[0029] Next, the main body case 10 and the lower cover 20 are assembled. Therefore, the main body case 10 and the lower cover 20 are arranged so that the main body case 10 is located above the lower cover 20. Next, the main body case 10 and the lower cover 20 are brought closer together in the vertical direction, and the lower edge of the peripheral wall 11 of the main body case 10 is fitted with the upper edge of the peripheral wall 22 of the lower cover 20 so that the multiple upper protrusions 13 and the multiple lower protrusions 23 are combined with each other, the protrusions 16 provided on the inner peripheral surface of the upper protrusion 13 engage with the recessed portions 52 of the corrugated tube 50 that is temporarily held along the inner peripheral surface of the upper protrusion 13, and the multiple engaged portions 17 of the main body case 10 engage with the multiple engaging portions 24 of the lower cover 20.

[0030] When the main body case 10 and the lower cover 20 are fully assembled, the engaged portion 17 and the engaging portion 24 are engaged with each other, thereby preventing the main body case 10 and the lower cover 20 from separating in the vertical direction. Furthermore, the upper protrusion 13 and the lower protrusion 23 are combined in the vertical direction to form an opening 3 that protrudes outward from the housing 1a. The electric wire 40 (see FIGS. 2 and 4) to which the corrugated tube 50 is attached is inserted into the opening 3 so as to traverse the inside and outside of the housing 1a, with the protrusion 16 provided on the inner circumferential surface of the opening 3 (upper protrusion 13) engaging with the recessed portion 52 of the corrugated tube 50. As a result, the corrugated tube 50 is held in the opening 3 by the clip 60 and the protrusion 16, which effectively prevents the corrugated tube 50 from shifting in position (e.g., coming out of the opening 3). In other words, even if the protruding height or circumferential length of the protruding portion 16 is insufficient to hold the corrugated tube 50 by the protruding portion 16 alone, the corrugated tube 50 can be properly held by combining the protruding portion 16 with the clip 60.

[0031] Furthermore, the engagement between the protrusions 16 and the recesses 52 of the corrugated tube 50 increases the length of the path along which water must travel (so-called creepage distance) when passing through the gap between the inner circumferential surface of the opening 3 and the corrugated tube 50, thereby improving the waterproofness of the electrical junction box 1. After the main body case 10 and the lower cover 20 are assembled, it is preferable to further tighten the outer periphery of the opening 3, which protrudes outward from the housing 1a of the electrical junction box 1, with a cable tie or the like (not shown). This more securely fits the upper protrusions 13 and the lower protrusions 23 together, narrowing the gap between the inner circumferential surface of the opening 3 and the corrugated tube 50, thereby further improving the waterproofness of the electrical junction box 1.

[0032] <Actions and Effects> As described above, according to the electrical junction box 1 of this embodiment, an exterior component (e.g., a corrugated tube 50, etc.) is attached to the electric wires 40 that will be inserted into and out of the electrical junction box 1, and a locking component (clip 60) is attached to the exterior component 50. The locking component 60 is locked to the housing 1a to hold the exterior component 50 and the electric wires 40 to which the exterior component 50 is attached in the opening 3. This makes it possible to hold the electric wires 40 in the opening 3 of the housing 1a without requiring manual holding by an operator, as in the conventional technique. Furthermore, because the locking component 60 is attached by being tied to the exterior component 50, the locking component 60 can be properly attached to the exterior component 50 by fastening the locking component 60 to the exterior component 50, compared to when a locking component is attached to the exterior component 50 using an attachment lock protrusion or the like, regardless of manufacturing variations (i.e., manufacturing dimensional tolerances) in the exterior component 50 and the locking component 60. Therefore, the electrical junction box 1 according to this embodiment is excellent in workability when inserting the electric wires 40 into the opening 3 of the electrical junction box 1.

[0033] Furthermore, in the electrical junction box 1 according to this embodiment, the locking component 60 is locked to the housing 1a independently of the assembly of the first housing portion (main body case 10) and the second housing portion (lower cover 20) that constitute the housing 1a. Specifically, the stay portion 14 in which the locking hole 15 is provided is located away from the boundary between the main body case 10 and the lower cover 20, and is a member that does not constitute this boundary. Therefore, manufacturing variations in the locking component 60 do not affect the assembly of the first housing portion 10 and the second housing portion 20. Therefore, compared to when the locking component 60 constitutes part of the opening 3, it is not necessary to design the dimensions of the first housing unit 10 and the second housing unit 20 taking into account manufacturing variations in the locking component 60 (for example, providing a large clearance between the first housing unit 10 and the second housing unit 20 so that the first housing unit 10 and the second housing unit 20 can be assembled even if there is a large manufacturing variation in the locking component), and therefore the first housing unit 10 and the second housing unit 20 can be assembled with precision. This improves the waterproofness of the electrical junction box 1.

[0034] Furthermore, according to the electrical junction box 1 according to this embodiment, the protrusions 16 provided on the inner circumferential surface of the opening 3 engage with the recessed portions 52 of the exterior component 50. As a result, the locking component 60 and the protrusions 16 hold the exterior component 50 in the opening 3, effectively preventing the exterior component 50 from shifting in position (for example, coming off the opening 3). Furthermore, the engagement between the protrusions 16 and the recessed portions 52 increases the length of the path along which water must travel when passing through the gap between the inner circumferential surface of the opening 3 and the exterior component 50 (so-called creepage distance), thereby improving the waterproofness of the electrical junction box 1.

[0035] <Other aspects> It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. are possible as appropriate. Furthermore, the material, shape, dimensions, number, location, etc. of each component in the above-described embodiments are arbitrary as long as they can achieve the present invention, and are not limited thereto.

[0036] Here, the features of the electrical junction box 1 according to the present invention will be briefly summarized and listed below in [1] to [3].

[0037] [1] An electric junction box (1) comprising: a box-shaped housing (1a) having a space inside; an exterior part (50) to be attached to an electric wire (40) to be inserted into and out of the housing (1a); and a locking part (60) attached to be bound to the exterior part (50) and locked to the housing (1a), The housing (1a) is The housing (1a) has an opening (3) through which the electric wire (40) can be inserted into and out of the housing (1a), The exterior part (50) is It is arranged to pass through the opening (3), The locking part (60) is The housing (1a) is configured to be engaged with the housing (1a) inside the housing (1a) and to hold the exterior part (50) in the opening (3). Electrical junction box (1).

[0038] According to the electrical junction box having the configuration [1] above, an exterior component (e.g., a corrugated tube) is attached to the electric wire to be inserted into and out of the electrical junction box, and a locking component (e.g., a clip with a band) is attached to the exterior component. The locking component is locked to the housing and, together with the exterior component, holds the electric wire in the opening. This allows the electric wire to be held in the opening of the housing without the need for manual holding by an operator, as in conventional methods. Furthermore, because the locking component is fastened to the exterior component, the locking component can be properly attached to the exterior component by tightening it, regardless of manufacturing variations (i.e., manufacturing dimensional tolerances) in the exterior component and the locking component, compared to when the locking component is attached to the exterior component using a general locking protrusion or the like. Therefore, the electrical junction box having this configuration has excellent workability when inserting an electric wire into the opening of the electrical junction box.

[0039] [2] In the electrical connection box (1) described in [1] above, The housing (1a) is The device has a first housing portion (10) that forms a part of the opening (3) and a second housing portion (20) that forms the other part of the opening (3), and is configured so that the opening (3) is formed by assembling the first housing portion (10) and the second housing portion (20), and has a locked portion (15) to which the locking part (60) is locked at a location that does not form a boundary between the first housing portion (10) and the second housing portion (20). Electrical junction box (1).

[0040] According to the electrical junction box having the configuration [2] above, the locking component is locked to the housing independently of the assembly of the first and second housing components that make up the housing. Specifically, the locked portion is provided at a location that does not form a boundary between the first and second housing components. Therefore, manufacturing variations in the locking component do not affect the assembly of the first and second housing components. Therefore, compared to when the locking component forms part of an opening, it is not necessary to design the dimensions of the first and second housing components to take manufacturing variations in the locking component into account (for example, to provide a large clearance between the first and second housing components so that the first and second housing components can be assembled even if manufacturing variations in the locking component are large), and the first and second housing components can be assembled precisely. This improves the waterproofness of the electrical junction box.

[0041] [3] In the electrical connection box (1) described in [1] above, The housing (1a) is A protrusion (16) is provided on the inner peripheral surface of the opening (3), The exterior part (50) is The protrusion (16) has a recess (52) that engages with the protrusion (16). Electrical junction box (1).

[0042] According to the electrical junction box having the configuration [3] above, the protrusions provided on the inner circumferential surface of the opening engage with the recesses of the exterior component. This allows the locking component and the protrusions to hold the exterior component in the opening, effectively preventing the exterior component from shifting (e.g., slipping out of the opening). Furthermore, the engagement between the protrusions and the recesses increases the length of the path along which water must travel (the creepage distance) when passing through the gap between the inner circumferential surface of the opening and the exterior component, thereby improving the waterproofness of the electrical junction box. [Explanation of symbols]

[0043] 1 Electrical junction box 1a Housing 3 Opening 10 Main body case (first housing part) 15 Locking hole (locked part) 16 protrusion 20 Lower cover (second housing part) 40 Electric wire 50 Corrugated tube (exterior part) 52 Concave part 60 Clip (locking part)

Claims

1. An electrical connection box comprising: a box-shaped housing having a space inside; an exterior part to be attached to an electric wire to be inserted into and out of the housing; and a locking part attached to be bound to the exterior part and locked to the housing, The housing includes: an opening through which the electric wire can be inserted into and out of the housing; The exterior part is positioned to pass through the opening, The locking part is The exterior component is configured to be engaged with the housing inside the housing and to hold the exterior component in the opening. Electrical junction box.

2. The electrical junction box according to claim 1, The housing includes: The device has a first housing part that forms a part of the opening and a second housing part that forms the other part of the opening, and is configured so that the opening is formed by assembling the first housing part and the second housing part, and has a locked part to which the locking part is locked at a location that does not form a boundary between the first housing part and the second housing part. Electrical junction box.

3. The electrical junction box according to claim 1, The housing includes: a protrusion provided on an inner peripheral surface of the opening, The exterior part is a recessed portion with which the protruding portion engages; Electrical junction box.

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