Electrical Junction Box Unit

Abstract

To provide an electric connection box unit which prevents wrong assembly of electric wire with a terminal to a stud bolt.SOLUTION: An electric connection box unit 100 comprises: an electric connection box 1 having a plurality of stud bolts S; a plurality of pieces of electric wire 50a, 50b, 50c with terminals having terminals 51 and electric wire 52 and each of which is tightened to a corresponding stud bolt S among the plurality of stud bolts S; and an inner cover 60 to which at least one piece of electric wire 50b, 50c with the terminals among the plurality of pieces of electric wire 50 with terminals is assembled. Then, the electric connection box 1 comprises an interference part 16 which interferes with at least a part of the inner cover when the at least one piece of electric wire 50b, 50c with the terminals assembled to the inner cover 60 is arranged at a position different from a normal position to be tightened to the corresponding stud bolt S.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to an electric junction box unit. [Background technology]

[0002] Conventionally, electrical junction boxes have been proposed that are mounted on vehicles and house various electronic components such as fuses, relays, and electronic control units inside the housing space. One conventional electrical junction box, for example, has a plurality of stud bolts that are electrically connected to the electronic components housed inside, and is configured such that the external device and the electronic components are electrically connected by fastening corresponding electric wires with terminals connected to external devices to the plurality of stud bolts (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-44141 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when an electric wire with a terminal that does not correspond to a certain stud bolt is fastened, the electric junction box (such as a fuse box or relay box) may not perform its intended function. Furthermore, when there is an unused stud bolt among a plurality of stud bolts, the electric junction box (such as a fuse box or relay box) may not perform its intended function even if an electric wire with a terminal is fastened to the unused stud bolt. For this reason, it is preferable that the electric junction box (electrical junction box unit) is configured as described above so that an electric wire with a terminal is not fastened to a stud bolt other than the corresponding stud bolt.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide an electric junction box unit that prevents erroneous attachment of an electric wire with a terminal to a stud bolt. [Means for solving the problem]

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

[0007] an electrical junction box having a plurality of stud bolts; a plurality of terminal-attached electric wires each having a terminal and an electric wire, the terminal-attached electric wires being fastened to corresponding ones of the plurality of stud bolts; Among the plurality of terminal-attached electric wires A part of a cover to which the terminal-attached electric wire is attached; An electric junction box unit comprising: The electrical connection box includes: the at least one electric wire with terminal assembled to the cover has an interference portion that interferes with at least a part of the cover when the at least one electric wire with terminal is disposed at a position different from a normal position where the electric wire is fastened to the corresponding stud bolt; It is an electrical junction box unit. Effect of the Invention

[0008] The electric junction box unit according to the present invention will be described below. According to the electric junction box unit of the present configuration, at least one of a plurality of electric wires with terminals, each of which is fastened to a corresponding one of a plurality of stud bolts, is assembled to the cover. The electric wire with terminal assembled to the cover is arranged in a position different from the normal position, so that at least a part of the cover interferes with an interference portion of the electric junction box. This prevents the electric wire with terminal from being fastened to a stud bolt different from the corresponding stud bolt. In other words, the electric junction box unit of the present configuration prevents the electric wire with terminal from being erroneously assembled.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a front perspective view of an electric junction box unit according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded view of the main part of FIG. [Diagram 3] 3 is a rear perspective view of the side cover shown in FIG. 2. FIG. [Figure 4] 2. FIG. 4 is a front perspective view of the inner cover shown in FIG. [Diagram 5] FIG. 5 is a rear perspective view of FIG. [Figure 6] FIG. 6 is a first diagram for explaining a structure for preventing erroneous assembly of an electric wire with a terminal. [Figure 7] FIG. 7 is a second diagram for explaining the structure for preventing erroneous assembly of an electric wire with a terminal. [Figure 8] FIG. 8 is a front perspective view showing a first modified example of the inner cover. [Figure 9] FIG. 9 is a front perspective view showing a second modified example of the inner cover. [Figure 10] FIG. 10 is a front perspective view showing a third modified example of the inner cover. [Figure 11] FIG. 11 is a diagram showing a side cover corresponding to the inner cover shown in FIG. 10, and is a front perspective view showing a first modified example of the side cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] <Embodiment> Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An electric junction box unit 100 includes an electric junction box 1 having a stud bolt S provided in an internal space, an electric wire with terminal 50 fastened to the stud bolt S, and an inner cover 60 (corresponding to the "cover" of the present invention) disposed between the electric junction box 1 and the electric wire with terminal 50 and to which the electric wire with terminal 50 is attached.

[0012] For convenience of explanation, "front", "rear", "left", "right", "upper", and "lower" are defined below as shown in Figures 1 to 14. The "front-rear direction", "left-right direction", and "up-down direction" are perpendicular to each other.

[0013] <Electrical junction box 1> The following provides an overview of the electrical junction box 1. The electrical junction box 1 is typically a relay box that is mounted on a vehicle and has an internal space for accommodating electronic components such as relays and other electronic components R.

[0014] 1 and 2, the electrical junction box 1 is made up of a frame 10, a lower cover 20 attached to the lower side of the frame 10 so as to close the lower opening of the frame 10, an upper cover 30 attached to the upper side of the frame 10 so as to close the upper opening of the frame 10, and a side cover 40 attached to a side wall portion 11 (side cover attachment portion 14) of the frame 10. All of the above four parts that make up the electrical junction box 1 are resin molded bodies.

[0015] A plurality of (three in this example) bolt receiving sections SA are arranged side by side in the left-right direction in the front right part of the internal space of the electrical junction box 1 (see Fig. 2 and Figs. 6 to 7). A stud bolt S is provided in each of the plurality of bolt receiving sections SA (see Fig. 2 and Figs. 6 to 7). The stud bolt S is connected to an electronic component R or the like mounted on the electrical junction box 1 in the internal space via a bus bar (reference numeral omitted), and a terminal-equipped electric wire 50 connected to an external device (not shown) such as a battery is fastened to the stud bolt S, thereby enabling an electrical connection between the electronic component R and the external device.

[0016] 1, in the electric junction box 1, an electric wire (not shown) that is conductively connected to a part of an electronic component R located inside the electric junction box 1 is led out to the outside of the electric junction box 1 through an electric wire outlet hole 2 provided in the rear left part of the electric junction box 1. Furthermore, an electric wire (not shown) that is conductively connected to a part of another electronic component R is led out to the outside of the electric junction box 1 through an electric wire outlet hole 3 provided in the right front part of the electric junction box 1.

[0017] The frame 10, the lower cover 20, the upper cover 30, and the side cover 40 which constitute the electrical junction box 1 will be described below in order.

[0018] First, the frame 10 will be described. As shown in Fig. 2, the frame 10 has a side wall portion 11 having a generally rectangular tubular shape extending in the vertical direction. The side wall portion 11 constitutes most of the external appearance of the side surface of the electrical junction box 1.

[0019] The side wall 11 has a lower end portion at a plurality of circumferential positions (eight positions in this example) on its outer surface integrally formed with a locking portion 12 including a through hole extending in the up-down direction. The locking portion 12 has a function of assembling the lower cover 20 to the frame 10.

[0020] The side wall portion 11 has an upper end portion, and the outer surface of the side wall portion 11 is provided with a plurality of latched portions 13 at respective circumferential positions (four positions in this example). The latched portions 13 have a function of assembling the upper cover 30 to the frame 10.

[0021] A side cover assembly portion 14 to which the side cover 40 is attached is provided at a location on the front right side of the side wall portion 11 that corresponds to the multiple stud bolts S. The side cover assembly portion 14 is provided with, for example, an engaged portion (not shown) to which an engaging portion (not shown) of the side cover 40 is engaged. The engaged portion has a function of assembling the side cover 40 to the frame 10.

[0022] The portions of the side cover assembly part 14 (specifically, the front right part of the side wall part 11) that correspond to the stud bolts S on the right and center function as the inner cover assembly part 15 to which the inner cover 60 is attached. A locking piece (number omitted) to which the locked part 66 of the inner cover 60 is locked is provided at the right end part of the inner cover assembly part 15. The locking piece functions to assemble the inner cover 60 to the frame 10.

[0023] The left-right length of side cover assembly part 14 corresponds to the length from the right end of the right bolt accommodating part SA to the left end of the left bolt accommodating part SA. In other words, inner cover assembly part 15 corresponds to the length from the right end of the right bolt accommodating part SA to the left end of the central bolt accommodating part SA.

[0024] A semi-cylindrical electric wire holding portion 16 that opens forward and extends downward is integrally provided in a vertically central region of the side cover mounting portion 14 (specifically, the front right portion of the side wall portion 11) at a location corresponding to the left stud bolt S (see also Figs. 6 and 7). The electric wire holding portion 16 has a function of holding a part of an electric wire 52 in a terminal-attached electric wire 50a (corresponding to "another electric wire with terminal" of the present invention) that is fastened to the left stud bolt S. As a result, the electric wire 52 held by the electric wire holding portion 16 is led out downward from the side cover 40 (see Fig. 1). Furthermore, the electric wire holding portion 16 corresponds to the "interference portion" of the present invention. The function of the electric wire holding portion 16 as an interference portion will be described in detail later.

[0025] A semi-cylindrical gutter portion 17 that opens downward and extends leftward is provided in a portion of the side wall portion 11 that corresponds to the electric wire withdrawal hole 2 at the rear left portion. The gutter portion 17 functions to form the upper portion of the inner wall that defines the electric wire withdrawal hole 2 at the rear left portion.

[0026] A semi-cylindrical gutter portion 18 that opens downward is provided so as to extend rightward at a location on the side wall portion 11 corresponding to the electric wire withdrawal hole 3 at the front right portion. The gutter portion 18 functions to form the upper portion of the inner wall that defines the electric wire withdrawal hole 3 at the front right portion.

[0027] Stay portions 19 extending downward are integrally provided on the outer surface of a plurality of circumferential positions at the lower end of the side wall portion 11. The stay portions 19 have the function of fixing the frame 10 (i.e., the electrical junction box 1) to a mounting position on the vehicle by assembling their tips to the mounting position on the vehicle.

[0028] Next, the lower cover 20 will be described. As shown in Fig. 2, the lower cover 20 is integrally provided with an annular side wall portion 21 that constitutes most of the appearance of the lower side surface of the electrical junction box 1, and a bottom wall portion 22 that closes an annular lower end opening of the side wall portion 21 and constitutes most of the appearance of the bottom surface of the electrical junction box 1. The annular upper edge portion of the side wall portion 21 has a shape that corresponds to the annular lower edge portion of the side wall portion 11 of the frame 10, and is capable of fitting with the annular lower edge portion of the side wall portion 11.

[0029] On the outer surface of the upper end portion of the side wall portion 21 at multiple circumferential locations (eight locations in this example), upwardly extending locking pieces 23 are integrally provided, each of which corresponds to the multiple locked portions 12 of the frame 10.

[0030] A semi-cylindrical gutter portion 24 that opens upward and extends leftward is provided in a portion of the side wall portion 21 that corresponds to the electric wire withdrawal hole 2 at the rear left portion. The gutter portion 24 functions to form the lower portion of the inner wall that defines the electric wire withdrawal hole 2 at the rear left portion.

[0031] A semi-cylindrical gutter portion 25 that opens upward is provided so as to extend rightward at a location of the side wall portion 21 corresponding to the electric wire withdrawal hole 3 at the front right portion. The gutter portion 24 functions to form the lower portion of the inner wall that defines the electric wire withdrawal hole 3 at the front right portion.

[0032] Next, the upper cover 30 will be described. As shown in Fig. 2, the upper cover 30 integrally comprises an annular side wall portion 31 that constitutes most of the 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 appearance of the upper surface of the electrical junction box 1. The annular lower edge portion of the side wall portion 31 has a shape that corresponds to the annular upper edge portion of the side wall portion 11 of the frame 10, and is capable of fitting with the annular upper edge portion of the side wall portion 11.

[0033] The outer surface of the lower end of the side wall portion 31 is integrally provided with locking portions 33 each including a hole portion penetrating in the vertical direction at multiple circumferential locations (four locations in this example) corresponding to the multiple locking portions 13 of the frame 10.

[0034] Next, a description will be given of the side cover 40. As shown in Figures 2 and 3, the side cover 40 is integrally formed with a main body portion 41 that opens forward and penetrates in the vertical direction, and an upper wall portion 32 that closes the upper opening of the main body portion 41.

[0035] The main body 41 has a first accommodating portion 41a for accommodating the electric wire with terminal 50a, and a second accommodating portion 41b for accommodating the electric wire with terminal 50b, 50c (corresponding to "at least one electric wire with terminal among the plurality of electric wires with terminal" of the present invention) assembled to the inner cover 60 (see FIG. 3). The first accommodating portion 41a and the second accommodating portion 41b are disposed adjacent to each other in the left-right direction so as to communicate with each other. Note that the first accommodating portion 41a and the second accommodating portion 41b are spaces, and therefore there is no clear boundary between them.

[0036] The body 41 is shaped so that the first accommodating portion 41a can accommodate the electric wire with terminal 50a, and the second accommodating portion 41b can accommodate the electric wires with terminals 50b, 50c attached to the inner cover 60. The length of the body 41 in the left-right direction corresponds to the length of the side cover mounting portion 14 in the left-right direction, that is, the length from the right end of the right bolt accommodating portion SA to the left end of the left bolt accommodating portion SA. The body 41 is provided with a locking portion (not shown) corresponding to the locked portion of the side cover mounting portion 14 on the frame 10.

[0037] A hole 43 penetrating in the vertical direction is provided at a predetermined position of the upper wall portion 42 so as to make visible the terminal 51 of the terminal-attached electric wire 50 fastened to the stud bolt S. In this example, the hole 43 is provided at a corresponding position of the upper wall portion 42 so as to make visible the terminal 51 of the terminal-attached electric wire 50a fastened to the stud bolt S on the left side.

[0038] The above describes the frame 10, the lower cover 20, the upper cover 30, and the side cover 40 that constitute the electrical junction box 1. In order to obtain the electrical junction box 1 that is made up of the frame 10, the lower cover 20, the upper cover 30, and the side cover 40, it is necessary to assemble the lower cover 20, the upper cover 30, and the side cover 40 to the frame 10, respectively.

[0039] To assemble the lower cover 20 to the frame 10, the multiple locking pieces 23 (see FIG. 2) of the lower cover 20 are inserted from below into the multiple through holes of the locked portions 12 (see FIG. 2) of the frame 10, and from this state, the annular upper edge portion of the side wall portion 21 of the lower cover 20 is fitted into the annular lower edge portion of the side wall portion 11 of the frame 10, and the multiple locking pieces 23 are locked to the multiple locked portions 12. This completes the assembly of the lower cover 20 to the frame 10.

[0040] To attach the upper cover 30 to the frame 10, the annular lower edge of the side wall 31 of the upper cover 30 is fitted into the annular upper edge of the side wall 11 of the frame 10, and the multiple locking portions 33 (see FIG. 2) of the upper cover 30 are locked to the multiple locked portions 13 (see FIG. 2) of the frame 10. This completes the attachment of the upper cover 30 to the frame 10. Note that the attachment of the side cover 40 to the frame 10 is performed after the side cover 40 is attached to the frame 10.

[0041] To attach the side cover 40 to the frame 10, a plurality of locking portions (not shown) of the side cover 40 are locked to respective locked portions (not shown) of the side cover attachment portion 14 of the frame 10. This completes the attachment of the side cover 40 to the frame 10. The attachment of the side cover 40 to the frame 10 is performed after the terminal-attached electric wires 50 are fastened to the stud bolts S.

[0042] In this manner, the electrical junction box 1 is completed by assembling the lower cover 20, the upper cover 30, and the side cover 40 to the frame 10. The order of the step of assembling the lower cover 20 to the frame 10 and the step of assembling the side cover 40 to the frame 10 does not matter.

[0043] When the assembly of the electrical junction box 1 is complete, the engagement between the multiple locking pieces 23 and the multiple locked portions 12 prevents the lower cover 20 from being separated downward from the frame 10. Furthermore, the engagement between the multiple locking portions 33 and the multiple locked portions 13 prevents the upper cover 30 from being separated upward from the frame 10. Furthermore, the engagement between the multiple locking portions of the side cover 40 and the multiple locked portions of the side cover assembly portion 14 of the frame 10 prevents the side cover 40 from being separated forward from the frame 10.

[0044] Furthermore, the gutter-shaped portion 17 of the frame 10 and the gutter-shaped portion 24 of the lower cover 20 define a rear left electric wire outlet hole 2 through which an electric wire (not shown) is inserted. Similarly, the gutter-shaped portion 18 of the frame 10 and the gutter-shaped portion 25 of the lower cover 20 define a right front electric wire outlet hole 3 through which an electric wire (not shown) is inserted.

[0045] <Terminal Wire 50> Hereinafter, the electric wire with terminal 50 will be described. As shown in Fig. 6 and Fig. 7, the electric wire with terminal 50 is composed of a substantially L-shaped terminal 51 and an electric wire 52 to which the terminal 51 is connected at an end. One end of the electric wire with terminal 50 is connected (fastened) to a stud bolt S, and the other end is connected to an external device.

[0046] Terminal 51 is integrally formed with electric wire connection portion 53 that extends in the vertical direction and is connected to electric wire 52, and bolt connection portion 54 that extends rearward from the upper end of electric wire connection portion 53 and is fastened to a stud bolt S. Bolt connection portion 54 is provided with a hole portion 55 that penetrates in the vertical direction and through which stud bolt S is inserted. Electric wire 52 is formed with a conductor core wire (not shown) and an insulating coating (reference number omitted) that covers the conductor core wire.

[0047] <Inner Cover 60> The inner cover 60 will be described below. As shown in Fig. 4 and Fig. 5, the inner cover 60 is composed of a main body 61 in which a plurality of (two in this example) storage sections 62 are arranged side by side in the left-right direction. In this example, since the electric connection box 1 has three stud bolts S, the inner cover 60 (main body 61) is provided with two storage sections 62 (i.e., configured to be able to hold two terminal-equipped electric wires 50) from the viewpoint of preventing erroneous assembly.

[0048] The main body 61 is integrally formed with a first wall 61a extending in the up-down direction, a pair of second wall 61b provided at both left and right end edges of the first wall 61a, a partition 61c disposed in a substantially central region in the left-right direction between the pair of second wall 61b, and a bottom wall 61d extending forward from the first wall 61a. In other words, each storage section 62 is integrally formed with the first wall 61a, one second wall 61b, the partition 61c, and a part of the bottom wall 61d, and is formed to open forward and upward.

[0049] In addition, the left-right length of the main body 61 (the length between the pair of second wall portions 61b) corresponds to the left-right length of the inner cover assembly portion 15, i.e., the length from the right end portion of the right-side bolt accommodating portion SA to the left end portion of the central bolt accommodating portion SA.

[0050] A guide portion 63 that guides the lead-out direction of the terminal-fitted electric wire 50 is integrally provided in each of the accommodating portions 62. The guide portion 63 is formed in an inclined shape such that a front end surface thereof extends obliquely downward and forward.

[0051] A semi-cylindrical electric wire holding portion 64 that opens forward is provided at the lower end of each accommodating portion 62 so as to extend obliquely downward and forward. This allows the electric wire 52 to be led out of the side cover 40 to the downward front portion. The electric wire holding portion 64 has a function of holding a part of the electric wire 52 in the electric wire with terminal 50.

[0052] An electric wire fixing portion 64a including a hole penetrating in the front-rear direction is provided at the right end portion of the electric wire holding portion 64. A band B (see FIGS. 6 and 7) for fixing the electric wire 52 to the electric wire holding portion 64 is inserted into the electric wire fixing portion 64a.

[0053] At the upper end of the main body 61, terminal holding portions 65 are provided corresponding to the respective accommodating portions 62. The terminal holding portions 65 are composed of a hole portion 65a penetrating in the front-rear direction and a hood portion 65b protruding rearward from the rear end surface of the first wall portion 61a over the entire circumferential area of ​​the hole portion 65a. In the terminal holding portion 65, the bolt connection portion 54 of the terminal 51 of the terminal-attached electric wire 50 is, for example, press-fitted into the hole portion 65a from the front, and the pressed-fit bolt connection portion 54 is held by the hood portion 65b.

[0054] A locking portion 66 including a through hole extending in the vertical direction is integrally provided on the outer surface of the main body portion 61 (in this example, the right-side second wall portion 61b) to correspond to the locking piece of the frame 10 (see Figure 5).

[0055] <Structure for preventing incorrect assembly of the terminal-attached electric wire 50> The structure for preventing erroneous assembly of the electric wire with terminal 50 will be described below. Before describing the structure for preventing erroneous assembly of the electric wire with terminal 50, the assembly of the electric wires with terminal 50b, 50c to the inner cover 60 will be described. The electric wires with terminal 50b, 50c are assembled to the inner cover 60 by press-fitting the bolt connection parts 54 of the electric wires with terminal 50b, 50c into the hole parts 65a of the terminal holding part 65 of the inner cover 60, and holding the electric wires 52 of the electric wires with terminal 50b, 50c in the electric wire holding parts 64. In this way, the electric wires with terminal 50b, 50c are assembled to the inner cover 60 (see FIG. 2 and FIG. 6 to FIG. 7).

[0056] The structure for preventing erroneous assembly of the electric wire with terminal 50 will be described below separately for a case where the electric wire with terminal 50a is first assembled (fastened) to the stud bolt S, and a case where the electric wires with terminal 50b, 50c assembled to the inner cover 60 are first assembled (fastened) to the stud bolt S. It is assumed that the electric wire with terminal 50a is fastened to the left stud bolt S, the electric wire with terminal 50b is fastened to the central stud bolt S, and the electric wire with terminal 50c is fastened to the right stud bolt S. The state in which each electric wire with terminal 50 is thus arranged so as to be fastened to the corresponding stud bolt S is the "normal position" of the present invention.

[0057] First, a structure for preventing erroneous assembly of the electric wire with terminal 50 when the electric wire with terminal 50a is first assembled (fastened) to the stud bolt S will be described. As shown in Fig. 6, when the electric wire with terminal 50a is first assembled to the stud bolt S, the electric wires with terminal 50b, 50c assembled to the inner cover 60 are inevitably assembled to and fastened to the central and right stud bolts S, respectively. However, if the electric wires with terminal 50b, 50 are mistakenly arranged to be assembled to the left and central stud bolts S, respectively, and assembly is started to insert the stud bolts S into the hole portions 55 of the electric wires with terminal 50, the electric wire with terminal 50a interferes with the lower end portion 67 of the inner cover 60 in the middle stage, and as a result, the hole portions 55 of the electric wires with terminal 50 are not inserted into the incorrect stud bolts S. As a result, erroneous assembly of the electric wires with terminal 50b, 50c is prevented.

[0058] Next, a structure for preventing erroneous assembly of the electric wire with terminal 50 will be described when the electric wires with terminal 50b, 50c assembled to the inner cover 60 are first assembled (fastened) to the stud bolt S. As described above, if the electric wires with terminal 50b, 50 are erroneously arranged to be assembled to the left and center stud bolts S, respectively, and assembly is started by inserting the stud bolts S into the holes 55 of the electric wires with terminal 50, the electric wire holding portion 16 interferes with the lower end portion 67 of the inner cover 60 midway through, and as a result, the holes 55 of the electric wires with terminal 50 are not inserted into the incorrect stud bolts S. As a result, erroneous assembly of the electric wires with terminal 50b, 50c is prevented.

[0059] The electric junction box unit 100 is manufactured by fastening each of the terminal-equipped electric wires 50 to the corresponding stud bolts S, and then assembling the side cover 40 to the frame 10 as described above.

[0060] <Actions and Effects> According to the electric junction box unit 100 of this embodiment, among the multiple electric wires with terminals 50a, 50b, 50c each fastened to a corresponding stud bolt S among the multiple stud bolts S, the electric wires with terminals 50b, 50c are assembled to the inner cover 60. Then, the electric wires with terminals 50 assembled to the inner cover 60 are arranged in a position different from the normal position, so that at least a part of the inner cover 60 (main body portion 61 and lower end portion 67) interferes with the electric wire holding portion 16 (interference portion) provided on the frame 10. This prevents the electric wires with terminals 50 (50b, 50c in this example) from being fastened to a stud bolt S different from the corresponding stud bolt S. In other words, the electric junction box unit 100 prevents the electric wires with terminals 50 from being erroneously assembled.

[0061] Furthermore, according to the electric junction box unit 100 of this embodiment, the interference portion (the electric wire holding portion 16) not only prevents erroneous assembly, but also has the function of holding the electric wire 52 of another electric wire with terminal 50a fastened to the stud bolt S. This makes it possible to suppress the movement of the electric wire with terminal 50a inside the side cover 40.

[0062] <Other forms> The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0063] <First Modification of the Inner Cover 60> In the above embodiment, since a plurality of electric wires with terminals 50 are fastened to each of the three stud bolts S, the inner cover 60 is provided with two accommodating sections 62. However, for example, if only two of the three stud bolts S are used, only one accommodating section 62 may be provided in the inner cover 60, and further, instead of the other accommodating section 62, a dummy section 68 having approximately the same length in the left-right direction as the accommodating section 62 may be provided (see FIG. 8). This makes it possible to prevent the assembly (fastening) of electric wires with terminals 50 to a stud bolt S that is not being used.

[0064] <Second Modification of the Inner Cover 60> In the above embodiment, the inner cover 60 is configured to accommodate the right and center stud bolts S. However, the inner cover 60 may be configured to accommodate all stud bolts S, including the left stud bolt S. Specifically, a protruding accommodating portion 69 may be provided in which only the upper region of the left front part of the inner cover 60 protrudes leftward by the left-right length of the bolt accommodating portion SA (see FIG. 9). This makes the left-right length of the inner cover assembly portion 15 equal to the left-right length of the side cover assembly portion 14. In other words, since the left-right length of the inner cover 60 is equal to the left-right length of the side cover assembly portion 14, the inner cover 60 is reliably positioned relative to the frame 10 (inner cover assembly portion 15). This prevents the terminal-attached electric wire 50 from being erroneously assembled. The vertical length of the protruding accommodating portion 69 is not particularly limited as long as it does not interfere with the electric wire holding portion 16 in the correct position.

[0065] <Third Modification of the Inner Cover 60 and First Modification of the Side Cover 40> In the above embodiment, each accommodating section 62 of the inner cover 60 is provided with a guide section 63 formed with a front end surface inclined so as to extend obliquely downward to the front, and the electric wire holding section 64 is provided so as to extend obliquely downward to the front. Therefore, the electric wire 52 of the electric wire with terminal 50 is led out from the side cover 40 to the front. However, for example, when it is desired to lead out the electric wire 52 of the electric wire with terminal 50 downward from the side cover 40 along the vertical direction, each accommodating section 62 does not need to be provided with the guide section 63, and the electric wire holding section 64 may be provided so as to extend (downward) along the vertical direction (see FIG. 10). In this way, the inner cover 60 can be made according to the direction in which the electric wire 52 is to be led out. This allows the electric wire 52 to be led out in a desired direction.

[0066] In the above embodiment, the electric wires 52 of the electric wires with terminals 50 assembled to the inner cover 60 are led out obliquely to the lower front, and the side covers 40 are formed to accommodate this. However, when the inner cover 60 is configured as in the third modified example, the electric wires with terminals 50 assembled to the inner cover 60 are led out downward, and therefore the length of the main body 41 of the side cover 40 in the front-rear direction may be shortened to accommodate this (see FIG. 11). This allows the side cover 40, and therefore the electric junction box unit 100, to be made smaller in size.

[0067] Here, the features of the embodiments of the electric junction box unit according to the present invention described above will be briefly summarized and listed in the following [1] to [2].

[0068] [1] An electrical connection box (1) having a plurality of stud bolts (S); a plurality of terminal-attached electric wires (50: 50a, 50b, 50c) each having a terminal (51) and an electric wire (52) and each being fastened to a corresponding one of the plurality of stud bolts (S); a cover (inner cover 60) to which at least one of the terminal-attached electric wires (50b, 50c) among the plurality of terminal-attached electric wires (50) is attached; An electric junction box unit (100) comprising: The electrical connection box (1) comprises: When the electric wires with terminals (50b, 50c) assembled to the cover (inner cover 60) are disposed at a position different from the normal position where the electric wires are fastened to the corresponding stud bolts (S), the electric wires have an interference portion (electric wire holding portion 16) that interferes with at least a part of the cover. An electrical junction box unit (100).

[0069] According to the electric junction box unit having the configuration [1] above, at least one of a plurality of electric wires with terminals, each of which is fastened to a corresponding one of a plurality of stud bolts, is assembled to the cover. The electric wire with terminal assembled to the cover is arranged in a position different from the normal position, so that at least a part of the cover interferes with an interference part of the electric junction box. This prevents the electric wire with terminal from being fastened to a stud bolt different from the corresponding stud bolt. In other words, the electric junction box unit having this configuration prevents the electric wire with terminal from being erroneously assembled.

[0070] [2] In the electric junction box unit (100) described in the above [1], The interference portion is an electric wire holding portion (16) that holds the electric wire (52) of the electric wire with terminal (50a) other than the electric wire with terminal (50b, 50c) assembled to the cover (inner cover 60); An electrical junction box unit (100).

[0071] According to the electric junction box unit having the configuration [2] above, the interference portion not only prevents incorrect assembly but also has the function of holding the electric wires of other electric wires with terminals fastened to the stud bolt. [Explanation of symbols]

[0072] 1 Electrical junction box 10 Frames 16 Wire holding part (interference part) 20 Lower cover 30 Upper cover 40 Side cover 50,50a,50b,50c Wires with terminals 60 Inner cover 61 Main body 62 Storage unit 63 Guide part 64 Wire holding part 65 Terminal holding part 66 Locked part 67 Lower end 68 Dummy part 69 Protruding storage section 100 Electrical junction box unit B-Band S stud bolt SA bolt holder

Claims

1. an electrical junction box having a plurality of stud bolts; a plurality of terminal-attached electric wires each having a terminal and an electric wire, the terminal-attached electric wires being fastened to corresponding ones of the plurality of stud bolts; a cover to which a portion of the plurality of electric wires with terminals are attached; and An electric junction box unit comprising: The electrical connection box includes: the electric wire with terminal attached assembled to the cover has an interference portion that interferes with at least a part of the cover when the electric wire with terminal attached assembled to the cover is disposed at a position different from a normal position where the electric wire is fastened to the corresponding stud bolt; Electrical junction box unit.

2. An electrical connection box having a plurality of stud bolts; a plurality of terminal-attached electric wires each having a terminal and an electric wire, the terminal-attached electric wires being fastened to corresponding ones of the plurality of stud bolts; a cover to which at least one of the plurality of electric wires with terminals is attached; and An electric junction box unit comprising: The electrical connection box includes: the electric wire with terminal attached to the cover has an interference portion that interferes with at least a part of the cover when the electric wire with terminal attached to the cover is disposed at a position different from a normal position where the electric wire is fastened to the corresponding stud bolt, The interference portion is a wire holding portion that holds the electric wire with the terminal other than the electric wire with the terminal assembled to the cover; Electrical junction box unit.

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