Electrical junction box

Abstract

To provide an electric connection box with excellent waterproofness.SOLUTION: An electric connection box 1 comprises: a first resin body 10 having a bearing part 14; and a second resin body 30 that includes a rotational shaft 34 supported by the bearing part 14, and is rotated and fitted to the first resin body 10. The second resin body 30 is constructed so as to be changeable between a potential engagement position which can be rotated with respect to the first resin body 10 and a main engagement position where the rotational shaft 34 is engaged with the bearing part 14 and the second resin body 30 is fitted to the first resin body 10, and includes a double wall structure having: an outer wall part 31b; and an inner wall part 31a where a length of a fitting direction of the first resin body 10 and the second resin body 30 is longer than that of an outer wall part 31b. The inner wall part 31a is arranged so that a side wall part 11 of the first rein body 10 is nipped in a direction crossing the fitting direction with the outer wall part 31b when the second resin body 30 is fitted to the first rein body 10.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] The present invention relates to an electrical connection box.

Background Art

[0002] Conventionally, an electrical connection box has been proposed that includes a case body having an opening at the upper end and a case cover assembled to the case body so as to close the upper end opening of the case body. In one conventional electrical connection box, a bearing portion provided on the case cover is supported by a rotation shaft provided on the case body, and the case cover is assembled to the case body so as to rotate (see, for example, Patent Document 1).

[0003] In the above-described conventional electrical connection box, from the viewpoint of waterproofness, the case cover has a double-wall structure composed of an inner wall portion and an outer wall portion. In the assembled state of the case cover and the case body, the upper end edge portion of the side wall portion of the case body is disposed between the inner wall portion and the outer wall portion of the case cover. Thereby, a so-called labyrinth structure is formed by the inner wall portion and the outer wall portion of the case cover and the side wall portion of the case body, and the intrusion of liquids such as water into the inside of the electrical connection box is suppressed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, in the conventional electrical junction box described above, the case cover is assembled to rotate onto the case body, so the inner wall of the case cover is made shorter to prevent interference with the side wall of the case body during rotation. Although conventional electrical junction boxes have excellent waterproofing even with the above configuration, making the inner wall of the case cover shorter makes it easier for water and other liquids to enter the inside of the electrical junction box compared to when the inner wall is longer, making it difficult to improve waterproofing. Thus, there was room for improvement in terms of waterproofing in conventional electrical junction boxes in which the case body and case cover are rotatably fitted together.

[0006] This invention has been made in view of the above-described circumstances, and its purpose is to provide an electrical connection box with excellent waterproofing properties. [Means for solving the problem]

[0007] To achieve the aforementioned objectives, the electrical junction box according to the present invention is characterized by the following:

[0008] An electrical junction box comprising a first resin body having a bearing portion, and a second resin body having a pivot shaft supported by the bearing portion and rotatably fitted into the first resin body, The second resin body is It is configured to be displaceable between a temporary locking position in which the first resin body is rotatable and a permanent locking position in which the pivot shaft is locked to the bearing and the second resin body is fitted to the first resin body. It has a double-wall structure consisting of an outer wall portion and an inner wall portion whose length in the fitting direction between the first resin body and the second resin body is longer than that of the outer wall portion. The aforementioned inner wall portion is When the second resin body is fitted into the first resin body, it is positioned so as to sandwich the side wall portion of the first resin body together with the outer wall portion in a direction intersecting the fitting direction. Re, The bearing portion is When the second resin body is in the temporary locking position, the temporary locking portion supports the pivot shaft so that it can rotate, The second resin body has a locking portion to which the pivot shaft is locked when the second resin body is in the locking position, The aforementioned temporary locking portion is In the aforementioned fitting direction, the locking portion is positioned on the side of the second resin body that is positioned on the side of the main locking portion. The aforementioned pivot shaft is, A recess is formed in the peripheral wall of the shaft portion, and the locked portion is locked to the aforementioned locking portion, The peripheral wall on the opposite side from where the locking portion is provided has a notch that is recessed so as to penetrate the peripheral wall vertically, The notch allows the pivot shaft to pass through the temporary locking portion in the vertical direction when it is displaced between the temporary locking portion and the permanent locking portion. It must be an electrical junction box. [Effects of the Invention]

[0009] The electrical junction box according to the present invention is described below. The inner wall of the second resin body is configured to be longer in the fitting direction than the outer wall, and when the second resin body is fitted into the first resin body, it is positioned to sandwich the side wall of the first resin body together with the outer wall in a direction intersecting the fitting direction. As a result, this electrical junction box configuration ensures excellent waterproofing. In addition, the second resin body is rotatably fitted into the first resin body in this electrical junction box configuration. Here, in conventional electrical junction boxes, if the inner wall is configured to be long as described above, the inner wall will interfere with the side wall of the first resin body when the second resin body rotates, so the inner wall was designed to be short. However, in this electrical junction box configuration, the second resin body is configured to be displaceable between a rotatable temporary locking position and a permanent locking position where it is fitted into the first resin body, so the inner wall can be designed to be longer than the outer wall. As a result, this electrical junction box configuration has superior waterproofing compared to conventional electrical junction boxes.

[0010] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by referring to the attached drawings and reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments"). [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view of an electrical junction box according to an embodiment of the present invention. [Figure 2] Figure 2 is a perspective view showing the initial state of rotational fitting between the frame and the upper cover in the electrical junction box shown in Figure 1. [Figure 3] Figure 3 is an exploded perspective view of the main parts of Figure 2. [Figure 4] Figure 4 is a perspective view of the frame shown in Figure 3 and is a sectional view taken along line A-A of Figure 3. [Figure 5] Figure 5 is a top view of the bearing portion of the frame shown in Figure 4. [Figure 6] Figure 6 is an enlarged view of portion B in Figure 4. [Figure 7] Figure 7 is a perspective view of the upper cover shown in Figure 3. [Figure 8] Figure 8 is a top view of the shaft portion of the upper cover shown in Figure 7. [Figure 9] Figure 9 is a diagram for explaining the rotational fitting between the frame and the upper cover, and is a partially enlarged sectional view showing the state before assembling the upper cover to the frame. [Figure 10] Figure 10 is a diagram for explaining the rotational fitting between the frame and the upper cover, and is a partially enlarged sectional view showing the state at the beginning of the rotational fitting between the frame and the upper cover. [Figure 11] Figure 11 is a diagram for explaining the rotational fitting between the frame and the upper cover, and is a partially enlarged sectional view showing the state near the end of the rotational fitting between the frame and the upper cover. [Figure 12] Figure 12 is a diagram for explaining the rotational fitting between the frame and the upper cover, and is a partially enlarged sectional view showing the state after the rotational fitting between the frame and the upper cover.

Embodiments for Carrying Out the Invention

[0012] <Embodiment> Hereinafter, referring to the drawings, the electrical connection box 1 according to the embodiment of the present invention shown in FIGS. 1 to 3 and FIGS. 9 to 12 will be described. The electrical connection box  is typically a relay box, a fuse box, etc. that is mounted on a vehicle and has a storage space for accommodating electronic components (not shown), such as relays and fuses, and other components (not shown).

[0013] For the sake of explanation, the terms "front," "rear," "left," "right," "up," and "down" are defined below as shown in Figures 1 to 12. The "front-rear direction," "left-right direction," and "up-down direction" are orthogonal to each other. When the electrical junction box 1 is mounted on a vehicle, the "front-rear direction," "left-right direction," and "up-down direction" correspond to the front-rear direction, left-right direction, and up-down direction of the vehicle, respectively. The side facing the inside of the electrical junction box 1 is called the "inside" side, and the side facing the outside of the electrical junction box 1 is called the "outside" side. The up-down direction corresponds to the "fitting direction" of the present invention. Furthermore, on a plane consisting of the front-rear direction and the left-right direction, all directions (so-called radial directions) centered on the inner center of the electrical junction box 1 correspond to the "intersecting direction" of the present invention.

[0014] As shown in Figures 1 to 3 and Figures 9 to 12, the electrical junction box 1 consists of a frame 10, a lower cover 20 assembled below the frame 10 to close the lower end opening of the frame 10, and an upper cover 30 assembled above the frame 10 to close the upper end opening of the frame 10. All three of the above components constituting the electrical junction box 1 are made of molded resin. The frame 10, lower cover 20, and upper cover 30 constituting the electrical junction box 1 will be described in order below.

[0015] Furthermore, the frame 10 corresponds to the "first resin body" of the present invention. In addition, the upper cover 30 corresponds to the "second resin body" of the present invention.

[0016] First, let's describe the frame 10. As shown in Figures 1 to 4, the frame 10 has a roughly rectangular cylindrical side wall portion 11 that extends in the vertical direction. The side wall portion 11 constitutes most of the external appearance of the side of the electrical connection box 1. As shown in Figures 9 to 12, the side wall portion 11 is integrally composed of an inner wall portion 11a and an outer wall portion 11b located outside the inner wall portion 11a. In other words, the frame 10 has a double-wall structure composed of an inner wall portion 11a and an outer wall portion 11b.

[0017] Multiple circumferential locations (eight in this example) on the outer surface of the lower end of the outer wall portion 11b are integrally provided with locking portions 12, each containing through holes extending in the vertical direction (see Figures 1 to 4). The locking portions 12 have the function of assembling the lower cover 20 to the frame 10.

[0018] Plate-shaped locking pieces 13 are integrally provided on the left and right outer surfaces of the upper end of the outer wall portion 11b, respectively (see Figures 1 to 4). The locking pieces 13 have the function of assembling the upper cover 30 to the frame 10.

[0019] A pair of bearing portions 14 are integrally provided on the rear outer surface of the upper end of the outer wall portion 11b (see Figures 1 to 4). The bearing portions 14 have the function of supporting the upper cover 30 so that it can rotate relative to the frame 10, and also fitting the upper cover 30 onto the frame 10.

[0020] As shown in Figures 5 and 6, the bearing portion 14 has a substantially rectangular cylindrical circumferential wall with a space S that penetrates in the vertical direction. A pair of temporary locking portions 15 that protrude toward the rear are provided on the inner surface of the front circumferential wall of the bearing portion 14. The pair of temporary locking portions 15 are arranged at a predetermined distance apart in the left-right direction. Each of the temporary locking portions 15 is provided such that its rear end is at a predetermined distance from the rear circumferential wall of the bearing portion 14. The upper surfaces of each temporary locking portion 15 are formed in an arc shape. The temporary locking portions 15 have the function of rotatably supporting the pivot shaft 34 (shaft portion 36) of the upper cover 30, which will be described later.

[0021] A main locking portion 16 is provided on the inner surface of the rear peripheral wall of the bearing portion 14, projecting toward the front. The main locking portion 16 is positioned corresponding to the space between the pair of temporary locking portions 15, and is located below the pair of temporary locking portions. The front end of the main locking portion 16 is provided at a predetermined distance from the front peripheral wall of the bearing portion 14. The main locking portion 16 has the function of locking the pivot shaft 34 (locked portion 37), which will be described later.

[0022] As described above, the bearing portion 14 is integrally constructed with a substantially rectangular peripheral wall, a temporary locking portion 15, and a permanent locking portion 16. This concludes the explanation of the frame 10.

[0023] Next, the lower cover 20 will be described. As shown in Figures 1 to 3 (especially Figure 3), the lower cover 20 integrally comprises an annular side wall portion 21 that constitutes most of the external appearance of the lower side surface of the electrical junction box 1, and a bottom wall portion 22 that closes the annular lower end opening of the side wall portion 21 and constitutes most of the external appearance of the bottom surface of the electrical junction box 1. The annular upper end edge of the side wall portion 21 has a shape that corresponds to the annular lower end edge of the side wall portion 11 of the frame 10, and is capable of being fitted with the annular lower end edge of the side wall portion 11.

[0024] Multiple locking pieces 23 extending upward are integrally provided on the outer surface of the side wall portion 21 at multiple circumferential locations (eight locations in this example) at the upper end of the side wall portion 21, corresponding to multiple locking portions 12 of the frame 10 (see Figure 3). The locking pieces 13 have the function of assembling the lower cover 20 to the frame 10. The lower cover 20 has now been described.

[0025] Next, the upper cover 30 will be described. As shown in Figures 1 to 3 and Figure 7, the upper cover 30 integrally comprises an annular side wall portion 31 that constitutes most of the external appearance of the upper side surface of the electrical junction box 1, and an upper wall portion 32 that closes the annular upper end opening of the side wall portion 31 and constitutes most of the external appearance of the upper surface of the electrical junction box 1. The annular lower end edge of the side wall portion 31 has a shape that corresponds to the annular upper end edge of the side wall portion 11 of the frame 10, and is capable of being fitted with the annular upper end edge of the side wall portion 11.

[0026] As shown in Figures 9 to 12, the side wall portion 31 is integrally composed of an inner wall portion 31a and an outer wall portion 31b located outside the inner wall portion 31a. In other words, the upper cover 30 has a double-wall structure composed of an inner wall portion 31a and an outer wall portion 31b. The inner wall portion 31a is configured to have a longer vertical length than the outer wall portion 31b (see Figures 9 to 12).

[0027] On the left and right outer surfaces of the outer wall portion 31b, a locking portion 33 is integrally provided, corresponding to a pair of locking pieces 13 of the frame 10. The locking portion 33 has the function of assembling the upper cover 30 to the frame 10.

[0028] A pivot shaft 34 is integrally provided on the rear outer surface of the outer wall portion 31b, corresponding to the bearing portion 14 of the frame 10 (see Figures 1 to 3 and Figure 7). The pivot shaft 34 has the function of being supported by the bearing portion 14 so that the upper cover 30 can rotate relative to the frame 10, and also locking the upper cover 30 to the bearing portion 14 so that it fits onto the frame 10.

[0029] As shown in Figures 7 and 8, the pivot shaft 34 has frame portions 35 that protrude from the outer wall portion 31b at predetermined intervals in the left-right direction. Each frame portion 35 is composed of a first extending portion that extends in the front-rear direction and a second extending portion that extends downward from the rear end of the first extending portion, and has a substantially L-shaped form.

[0030] A shaft portion 36 is provided at the lower end (rear end) of a pair of frame portions 35. The shaft portion 36 has a substantially cylindrical shape. The shaft portion 36 is rotatably supported by the temporary locking portion 15 of the frame 10 and functions as the pivot portion for the rotation of the upper cover 30.

[0031] The shaft portion 36 is provided with a locking portion 37 corresponding to the main locking portion 16 of the frame 10. The locking portion 37 is a recess in the peripheral wall of the shaft portion 36 that is recessed toward the center of the shaft portion 36, and has a shape corresponding to the main locking portion 16. The locking portion 37 is locked to the main locking portion 16 and has the function of assembling the upper cover 30 to the frame 10.

[0032] The shaft portion 36 is provided with a pair of notches 38 corresponding to the pair of temporary locking portions 15 of the frame 10. Each of the notches 38 is a recessed notch on the rear side so that the peripheral wall of the front region of the shaft portion 36 penetrates vertically, and is cut out to be larger than the outer circumference shape of the temporary locking portion 15 (see Figure 8). As will be described later, the notches 38 have the function of allowing the temporary locking portion 15 to move out of the way so that the pivot shaft 34 can pass through the temporary locking portion 15 in the vertical direction when the upper cover 30 (rotating shaft 34) is displaced between the temporary locking position and the permanent locking position.

[0033] As described above, the pivot shaft 34 is integrally constructed with a frame portion 35, a shaft portion 36, a locking portion 37, and a notch portion 38. The upper cover 30 has now been described.

[0034] The frame 10, lower cover 20, and upper cover 30 that constitute the electrical junction box 1 have been described above. In order to obtain the electrical junction box 1 composed of the frame 10, lower cover 20, and upper cover 30, it is necessary to assemble the lower cover 20 to the frame 10 and to assemble the upper cover 30 to the frame 10.

[0035] First, the assembly of the lower cover 20 to the frame 10 will be explained. In order to assemble the lower cover 20 to the frame 10, first, the multiple locking pieces 23 (see Figure 3) of the lower cover 20 are inserted from below into the multiple through holes of the locking portion 12 (see Figure 3) of the frame 10. From this state, the annular upper end edge of the side wall portion 21 of the lower cover 20 is fitted to the annular lower end edge of the side wall portion 11 of the frame 10, and the multiple locking pieces 23 are locked to the multiple locking portions 12. This completes the assembly of the lower cover 20 to the frame 10 (see Figure 1).

[0036] Next, the assembly of the upper cover 30 to the frame 10 will be described. To assemble the upper cover 30 to the frame 10, first, the pivot shaft 34 is inserted into the space S of the bearing portion 14 (see Figure 9), and the shaft portion 36 of the pivot shaft 34 is placed on the temporary locking portion 15 of the bearing portion 14 so that the shaft portion 36 is rotatably supported by the temporary locking portion 15 (see Figure 10). Note that the "temporary locking position" in this invention refers to the position where the pivot shaft (shaft portion 36) is rotatably supported by the temporary locking portion 15 (see Figure 10).

[0037] Then, the upper cover 30 begins to rotate so that it covers and closes the opening in the frame 10. Here, as described above, since the axis of rotation (i.e., the axis of the rotation axis 34) is located on the upper side (high position), when the upper cover 30 rotates, the inner wall portion 30a of the upper cover 30 does not interfere with the side wall portion 11 of the frame 10 (especially the inner wall portion 11a). Similarly, the other wall portions (inner wall portion 11a, outer wall portion 11b, and outer wall portion 31b) do not interfere with each other.

[0038] When the upper cover 30 is rotated to a position that covers and closes the opening in the frame 10, the temporary locking portion 15 and the notch portion 38 of the pivot shaft 34 are aligned, and the locking (rotatable support state) between the temporary locking portion 15 and the pivot shaft 34 (shaft portion 36) is released. As a result, the temporary locking portion 15 passes through the notch portion 38, and the pivot shaft 34 (upper cover 30) moves downward (see Figure 11).

[0039] At this time, insertion of the pair of locking pieces 13 (see Figure 3) of the frame 10 from below into the through holes (see Figure 3) of the pair of locking portions 33 of the upper cover 30 (i.e., locking of the locking pieces 13 to the locking portions 33) begins, and fitting of the annular lower end portion of the side wall portion 31 of the upper cover 30 to the annular upper end portion of the side wall portion 11 of the frame 10 begins.

[0040] Then, as the pivot shaft 34 (upper cover 30) moves further downward, the pivot shaft 34 overcomes the main locking portion 16 of the bearing portion 14, and the locked portion 37 of the pivot shaft 34 is locked to the main locking portion 16 (see Figure 12). In this invention, the "main locking position" refers to the position in which the pivot shaft (locked portion 37) is locked to the main locking portion 16.

[0041] In other words, the locking piece 13 of the frame 10 is locked into the locking portion 33 of the upper cover 30, and the annular lower end edge of the side wall portion 31 of the upper cover 30 is fitted into the annular upper end edge of the side wall portion 11 of the frame 10. As a result, the upper cover 30 is fitted into the frame 10, and the assembly of the upper cover 30 to the frame 10 is completed (see Figure 1).

[0042] When the electrical connection box 1 is fully assembled, the locking of multiple locking pieces 23 with multiple locking parts 12 prevents the lower cover 20 from separating downward from the frame 10. Similarly, the locking of a pair of locking parts 33 with a pair of locking pieces 13, and the locking of a locking part 37 on the pivot shaft 34 with the main locking part 16 on the bearing part 14, prevents the upper cover 30 from separating upward from the frame 10.

[0043] Furthermore, when the electrical junction box 1 is assembled, the inner wall portion 31a and outer wall portion 31b of the upper cover 30 are positioned to sandwich the outer wall portion 11b of the frame 10 in the radial direction of the electrical junction box 1. In addition, the inner wall portion 11a of the frame 10 is positioned inside the inner wall portion 31a of the upper cover 30. In this way, the side wall portion 11 of the frame 10 and the side wall portion 31 of the upper cover 30 form a so-called labyrinth structure along the radial direction of the electrical junction box 1. As a result, the electrical junction box 1 is guaranteed to have excellent waterproofing.

[0044] To remove the upper cover 30 from the frame 10, the locking portion 16 and the locked portion 37 are released, and the locking piece 13 and the locked portion 33 are released, and the upper cover 30 is moved upward along the vertical direction.

[0045] <Effects and Actions> In the electrical junction box 1 according to this embodiment, the inner wall portion 31a of the upper cover 30 is configured to have a longer vertical length than the outer wall portion 31b, and when the upper cover 30 is fitted onto the frame 10, it is positioned to sandwich the side wall portion 11 together with the outer wall portion 31b in the radial direction of the electrical junction box 1. As a result, in the electrical junction box 1 according to this embodiment, a so-called labyrinth structure is formed by the side wall portion 11 of the frame 10 and the side wall portion 31 of the upper cover 30, ensuring excellent waterproofing. Here, in the electrical junction box 1 according to this embodiment, the upper cover 30 is configured to be displaceable between a rotatable temporary locking position and a permanent locking position where it is fitted onto the frame 10 (i.e., the axis center of the rotation axis 34 is different in the vertical direction between the temporary locking position and the permanent locking position), so that the inner wall portion 31a does not interfere with the side wall portion 11 of the frame 10 when the upper cover 30 is rotated. Therefore, as described above, the inner wall portion 31a can be designed to be longer than the outer wall portion 31b. Thus, the electrical junction box 1 according to this embodiment has excellent waterproofing properties.

[0046] Furthermore, according to the electrical connection box 1 of this embodiment, the bearing portion 14 has a temporary locking portion 15 that rotatably supports the shaft portion 36 of the pivot shaft 34 when the upper cover 30 is in the temporary locking position, and a main locking portion 16 that locks the locked portion 37 of the pivot shaft 34 when the upper cover 30 is in the main locking position. The temporary locking portion 15 is positioned above the main locking portion 16 in the vertical direction. As a result, when the upper cover 30 is rotated, the pivot shaft 34 is positioned on the upper side, improving the visibility of the pivot shaft 34. Furthermore, when the upper cover 30 is fitted to the frame 10, the pivot shaft 34 is positioned on the lower side, making it difficult for the lock between the bearing portion 14 and the pivot shaft 34 to be released. Thus, the electrical connection box 1 of this embodiment is also excellent in terms of workability and maintaining the fitted (assembled) state between the frame 10 and the upper cover 30.

[0047] Furthermore, according to the electrical junction box 1 of this embodiment, the frame 10 has a double-wall structure similar to the upper cover 30 (i.e., the side wall portion 11 is composed of an inner wall portion 11a and an outer wall portion 11b). As a result, the electrical junction box 1 of this embodiment has improved waterproofing.

[0048] <Other forms> Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate. In addition, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited, as long as they can achieve the present invention.

[0049] Herein, the features of the embodiments of the electrical junction box according to the present invention described above are briefly listed below in [1] to [3]. [1] An electrical junction box (1) comprising a first resin body (frame 10) having a bearing portion (14), and a second resin body (upper cover 30) having a pivot shaft (34) supported by the bearing portion and rotatably fitted to the first resin body, The second resin body (upper cover 30) is, The second resin body (upper cover 30) is configured to be displaceable between a temporary locking position (see Figure 10) in which it is rotatable relative to the first resin body (frame 10), and a permanent locking position (see Figure 12) in which the pivot shaft (34) is locked to the bearing portion (14) and the second resin body (upper cover 30) is fitted onto the first resin body (frame 10). It has a double-wall structure consisting of an outer wall portion (31b) and an inner wall portion (31a) whose length in the fitting direction between the first resin body and the second resin body is longer than that of the outer wall portion. The aforementioned inner wall portion (31a) is When the second resin body (upper cover 30) is fitted onto the first resin body (frame 10), it is positioned to sandwich the side wall portion (11, outer wall portion 11b) of the first resin body together with the outer wall portion (31b) in a direction intersecting the fitting direction. Electrical junction box (1). [2] In the electrical junction box (1) described in [1] above, The bearing portion (14) is When the second resin body is in the temporary locking position (see Figure 10), the temporary locking portion (15) rotatably supports the pivot shaft (34, shaft portion 36), When the second resin body is in the locking position (see Figure 12), it has a locking portion (16, locked portion 37) to which the pivot shaft (34) is locked, The aforementioned temporary locking portion (15) is In the fitting direction, the following is positioned on the side of the second resin body (upper cover 30) that is closer to the main locking portion (16): Electrical junction box (1). [3] In the electrical junction box (1) described in [1] or [2] above, The first resin body (10) has a double-wall structure. Electrical junction box (1).

[0050] In the electrical junction box with the configuration described in [1] above, the inner wall portion of the second resin body is configured to be longer in the fitting direction than the outer wall portion. When the second resin body is fitted into the first resin body, it is positioned to sandwich the side wall portion of the first resin body together with the outer wall portion in a direction intersecting the fitting direction. This ensures excellent waterproofing of the electrical junction box with this configuration. In addition, the second resin body is rotatably fitted into the first resin body in the electrical junction box with this configuration. In conventional electrical junction boxes, if the inner wall portion is configured to be long as described above, the inner wall portion will interfere with the side wall portion of the first resin body when the second resin body rotates, so the inner wall portion was designed to be short. However, in the electrical junction box with this configuration, the second resin body is configured to be displaceable between a rotatable temporary locking position and a permanent locking position where it is fitted into the first resin body, so the inner wall portion can be designed to be longer than the outer wall portion. As a result, the electrical junction box with this configuration has superior waterproofing compared to conventional electrical junction boxes.

[0051] According to the electrical junction box configuration described in [2] above, the bearing portion has a temporary locking portion that rotatably supports the pivot shaft when the second resin body is in the temporary locking position, and a main locking portion that locks the pivot shaft when the second resin body is in the main locking position. The temporary locking portion is positioned on the second resin body side of the main locking portion in the fitting direction. This improves the visibility of the pivot shaft when the second resin body is rotated. Furthermore, when the second resin body is fitted to the first resin body, the pivot shaft is positioned away from the second resin body in the fitting direction, making it difficult for the lock between the bearing portion and the pivot shaft to be released. Thus, the electrical junction box configuration is excellent in terms of workability and maintaining the fitted state between the first resin body and the second resin body.

[0052] In the electrical junction box configuration described in [3] above, the first resin body also has a double-wall structure. As a result, the waterproofing of the electrical junction box in this configuration is improved. [Explanation of Symbols]

[0053] 1. Electrical junction box 10 Frame (First Resin Body) 11,21,31 Side wall section 11a,31a Inner wall 11b,31b External wall part 12,33,37 Locked part 13,23 Relating piece 14 Bearing section 15 Temporary locking part 16 Locking part 20 Lower Cover 22 Bottom wall section 30 Upper cover (second resin body) 32 Upper wall 34 pivot shafts 35 Frame section 36 Shaft section 38 Notch S space

Claims

1. An electrical junction box comprising a first resin body having a bearing portion, and a second resin body having a pivot shaft supported by the bearing portion and rotatably fitted into the first resin body, The second resin body is It is configured to be displaceable between a temporary locking position in which the first resin body is rotatable and a permanent locking position in which the pivot shaft is locked to the bearing and the second resin body is fitted to the first resin body. It has a double-wall structure consisting of an outer wall portion and an inner wall portion whose length in the fitting direction between the first resin body and the second resin body is longer than that of the outer wall portion. The aforementioned inner wall portion is When the second resin body is fitted into the first resin body, it is positioned so as to sandwich the side wall portion of the first resin body together with the outer wall portion in a direction intersecting the fitting direction. The bearing portion is When the second resin body is in the temporary locking position, the temporary locking portion supports the pivot shaft so that it can rotate, The second resin body has a locking portion to which the pivot shaft is locked when the second resin body is in the locking position, The aforementioned temporary locking portion is In the aforementioned fitting direction, the locking portion is positioned on the second resin body side than the main locking portion, The aforementioned pivot shaft is, A recess is formed in the peripheral wall of the shaft portion, and the locked portion is locked to the aforementioned locking portion, The peripheral wall on the opposite side from where the locking portion is provided has a notch that is recessed so as to penetrate the peripheral wall vertically, The notch allows the pivot shaft to pass through the temporary locking portion in the vertical direction when it is displaced between the temporary locking portion and the permanent locking portion. Electrical junction box.

2. In the electrical junction box according to claim 1, The first resin body has a double-wall structure, Electrical junction box.

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