Manufacturing method of electrical junction box

Abstract

To provide a method of manufacturing an electric connection box that can reduce types of bus bars and housings which should be prepared while constructing an electric connection box so as to meet a plurality of required specifications.SOLUTION: An electric connection box 1 comprises: first and second bus bars 20A and 20B; a housing 10; and a plurality of input / output parts 2A to 2C. Each of the first and second bus bars 20A and 20B is configured to allow selection of one of a first form where some 2A and 2C of the plurality of input / output parts belong to the first bus bar 20A and the reminder 2B belongs to the second bus bar 20B, and a second form where the other one 2A of the plurality of input / output parts belongs to the first bus bar 20A and the reminders 2B and 2C belong to the second bus bar 20B. A method of manufacturing the same comprises: a first step of constructing the first and second bus bars 20A and 20B so as to have one of the first and second forms selected on the basis of specifications of the electric connection box 1; and a second step of housing the first and second bus bars 20A and 20B into the housing 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing an electrical junction box. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known an electrical connection box (eg, a relay box) mounted on a vehicle, which is configured by accommodating a plurality of bus bars in a housing (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-188533 A [Patent Document 2] JP 2017-022808 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when manufacturing the above-mentioned electrical junction box, the arrangement of the input / output section (e.g., the portion where the terminal connected to the external power source is fastened to the bus bar with bolts and nuts) to which the terminal is connected, the type of electronic components (e.g., fuses, relays, etc.) to be stored in the electrical junction box, and the arrangement of those electronic components within the electrical junction box may differ depending on the specifications of the vehicle and the presence or absence of optional equipment. In order to accommodate such differences, it is conceivable to prepare multiple types (product numbers) of bus bars and housings with different shapes, structures, etc. based on the specifications of the vehicle. However, from the viewpoint of the manufacturing cost of the electrical junction box and the complexity of manufacturing management, it is not desirable to excessively increase the types (product numbers) of bus bars and housings to be prepared.

[0005] One object of the present invention is to provide a manufacturing method for an electrical junction box that can reduce the number of types of bus bars and housings that need to be prepared while configuring an electrical junction box to meet a plurality of required specifications. [Means for solving the problem]

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

[0007] A method for manufacturing an electric junction box, the method comprising: manufacturing an electric junction box including a first bus bar having a shape selected from a plurality of shapes; a second bus bar having a shape selected from a plurality of shapes; a housing that accommodates the first bus bar and the second bus bar; and a plurality of input / output units to which terminals connected to an external power source are to be connected, The first bus bar and the second bus bar are a first shape in which some of the plurality of input / output units belong to the first bus bar, and the remaining parts of the plurality of input / output units belong to the second bus bar; a second shape in which another part of the plurality of input / output units belongs to the first bus bar, and the remaining part of the plurality of input / output units other than the other part belongs to the second bus bar; The shape of one of the above can be selected, The housing includes: a bus bar configured to accommodate the first bus bar and the second bus bar having the first shape, and the first bus bar and the second bus bar having the second shape, The manufacturing method includes: a first step of configuring the first bus bar and the second bus bar to have one of the first shape and the second shape selected based on a specification of the electrical junction box; and a second step of housing the first bus bar and the second bus bar constructed in the first step in the housing. It is a manufacturing method for electrical junction boxes. Effect of the Invention

[0008] According to the manufacturing method of the electric junction box of the present invention, the shapes of the first bus bar and the second bus bar are selected to be one of the first shape and the second shape based on the required specifications of the electric junction box. Here, in the first shape, the first bus bar serves a part of the multiple input / output parts, and the second bus bar serves the remaining parts other than the part. In the second shape, the first bus bar serves the other part of the multiple input / output parts, and the second bus bar serves the remaining parts other than the remaining part. In this way, by changing the shapes of the first bus bar and the second bus bar, it is possible to meet various required specifications. In addition, regardless of whether the first bus bar and the second bus bar have the first shape or the second shape, the housing can accommodate the first bus bar and the second bus bar. Therefore, the manufacturing method of this configuration can reduce the types (product numbers) of bus bars and housings to be prepared while configuring an electric junction box to meet multiple required specifications.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the detailed description of the invention described below with reference to the accompanying drawings. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an electrical junction box according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a top view of the electrical junction box shown in FIG. [Diagram 3] FIG. 3 is a top view showing only the first bus bar and the second bus bar having the first shape in a state where they are assembled in the electrical junction box shown in FIG. [Figure 4] FIG. 4 is a top view showing only the first bus bar and the second bus bar having an example of the second shape in a state where they are assembled in the electrical junction box shown in FIG. 1 as the second embodiment. [Diagram 5] FIG. 5 is a diagram corresponding to FIG. 4, illustrating a first bus bar and a second bus bar having another example of the second shape as the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First Embodiment Hereinafter, a manufacturing method of an electric junction box 1 according to a first embodiment of the present invention will be described with reference to the drawings. The electric junction box 1 is typically a relay box mounted on a vehicle and housing electronic components such as relays and fuses.

[0012] For ease of explanation, "front", "rear", "left", "right", "upper" and "lower" are defined below as shown in Figs. 1 to 5. The "front-rear direction", "left-right direction" and "upper-lower direction" are mutually perpendicular. When the electrical junction box 1 is mounted on a vehicle, the "upper-lower direction" corresponds to the upper-lower direction of the vehicle.

[0013] As shown in Figs. 1 and 2, the electrical junction box 1 has a housing 10. The housing 10 is also referred to as a relay box block. The housing 10 is a component that constitutes a part of the housing of the electrical junction box 1. The entire housing of the electrical junction box 1 is composed of, for example, the housing 10, a frame (not shown) to which the housing 10 is attached, an upper cover (not shown) attached to the top of the frame, and a lower cover (not shown) attached to the bottom of the frame. All of the above multiple parts that constitute the housing of the electrical junction box 1 are resin molded bodies.

[0014] As shown in FIG. 1 and FIG. 2, the housing 10 has a shape extending in the left-right direction. A plurality of cavities 11 are formed on the upper surface of the housing 10 so as to be aligned in the front-rear direction and the left-right direction. Each cavity 11 is a recessed portion that opens upward and is recessed downward. Electronic components (not shown) such as relays and fuses are inserted from above and accommodated in each cavity 11. A plurality of input / output units 2A to 2C to which terminals (not shown) connected to an external power source are connected are provided at both left-right ends of the upper surface of the housing 10 so as to be exposed to the outside. In this example, the input / output unit 2A is disposed at the left end of the upper surface of the housing 10, and the input / output units 2B and 2C are disposed at the right end of the upper surface of the housing 10 so as to be aligned in the front-rear direction with the input / output unit 2C located behind the input / output unit 2B. In each of the plurality of input / output units 2A to 2C, a metal stud bolt sb extends upward from a metal flat plate (arranged so that the plate thickness direction faces the up-down direction) extending in the front-rear direction and the left-right direction. In each of the plurality of input / output units 2A to 2C, the above-mentioned terminal connected to an external power supply is bolted using a stud bolt sb. Each of the plurality of input / output units 2A to 2C corresponds to the "input / output unit" of the present invention.

[0015] The housing 10 shown in Fig. 1 and Fig. 2 accommodates a plate-shaped first bus bar 20A and a plate-shaped second bus bar 20B as shown in Fig. 3 or 4. The first bus bar 20A and the plate-shaped second bus bar 20B are attached to the housing 10 from below. Each of the first bus bar 20A and the plate-shaped second bus bar 20B functions to electrically connect the terminals connected to the external electric wires to some of the electronic components accommodated in the cavities 11. Each of the first bus bar 20A and the plate-shaped second bus bar 20B is formed by subjecting a metal plate to a pressing process (punching process), bending process, etc.

[0016] The first bus bar 20A and the second bus bar 20B are configured to be able to select one of a first shape shown in Fig. 3 as a first embodiment and a second shape shown in Fig. 4 as a second embodiment. Specifically, based on the specifications of the electric junction box 1, one of the first bus bar 20A and the second bus bar 20B having the first shape (first embodiment) shown in Fig. 3 and the first bus bar 20A and the second bus bar 20B having the second shape (second embodiment) shown in Fig. 4 is selected, and the selected first bus bar 20A and the second bus bar 20B are assembled to the housing 10. The housing 10 is configured to be able to accommodate both the first bus bar 20A and the second bus bar 20B having the first shape and the first bus bar 20A and the second bus bar 20B having the second shape.

[0017] First, as a first embodiment, a first bus bar 20A and a second bus bar 20B having a first shape shown in Fig. 3 will be described. The first bus bar 20A and the second bus bar 20B having the first shape shown in Fig. 3 each have a basic shape prepared in advance and extending approximately in the left-right direction.

[0018] The first busbar 20A having the first shape includes two fastening portions 21A and a standing portion 22A. The two fastening portions 21A are located at both left and right ends of the first busbar 20A having the first shape. Each fastening portion 21A has a flat plate shape extending in the front-rear and left-right directions (with the plate thickness direction facing the up-down direction). Each fastening portion 21A is provided with a stud bolt sb protruding upward. The standing portion 22A has a shape extending in a strip shape with its width direction perpendicular to the extending direction facing the up-down direction. A plurality of terminal portions 23A having a shape protruding upward are provided on the upper end surface (upper side end surface) of the standing portion 22A so as to be aligned along the extending direction of the standing portion 22A. The terminal portions 23A correspond to the "part attachment portion" of the present invention.

[0019] In a state where first busbar 20A having a first shape is assembled to housing 10, left fastening portion 21A functions as input / output portion 2A, and right fastening portion 21A functions as input / output portion 2C (see FIGS. 1 and 2). Each of multiple terminal portions 23A provided on upright portion 22A is arranged so as to be exposed in a corresponding one of multiple cavities 11, and is electrically connected to a corresponding one of multiple electronic components.

[0020] The second busbar 20B having the first shape includes one fastening portion 21B and a standing portion 22B. The one fastening portion 21B is located at the right end of the second busbar 20B having the first shape. The fastening portion 21B has a flat plate shape extending in the front-rear and left-right directions (with the plate thickness direction facing the up-down direction). The fastening portion 21B is provided with a stud bolt sb protruding upward. The standing portion 22B has a shape extending in a strip shape with its width direction perpendicular to the extending direction facing the up-down direction. A plurality of terminal portions 23B having a shape protruding upward are provided on the upper end surface (upper side end surface) of the standing portion 22B so as to be aligned along the extending direction of the standing portion 22B. The terminal portions 23B correspond to the "component attachment portion" of the present invention.

[0021] In a state in which second bus bar 20B having the first shape is assembled to housing 10, fastening portion 21B functions as input / output portion 2B (see FIGS. 1 and 2). Each of multiple terminal portions 23B provided on upright portion 22B is arranged so as to be exposed within corresponding one of multiple cavities 11, and is electrically connected to a corresponding one of multiple electronic components.

[0022] <Second embodiment> Next, as a second embodiment, a first bus bar 20A and a second bus bar 20B having a second shape shown in Fig. 4 will be described. The first bus bar 20A having the second shape shown in Fig. 4 is obtained by separating a portion (including the right fastening portion 21A) on the right side of the cut point P (see Fig. 3) from the first bus bar 20A having the first shape (= the basic shape described above) shown in Fig. 3, for example by cutting and removing it. The terminal portion 23A is not provided on the standing portion 22A included in the separated portion on the right side of the cut point P (see Fig. 3) in the first bus bar 20A having the first shape.

[0023] The second busbar 20B having the second shape shown in Fig. 4 is obtained by assembling an auxiliary busbar 20C as part of the second busbar 20B to the fastening portion 21B of the second busbar 20B having the first shape (= the basic shape) shown in Fig. 3. The metallic auxiliary busbar 20C is composed only of the fastening portion 21C. The fastening portion 21C has a flat, band-like shape that extends in the front-rear and left-right directions (with the plate thickness direction facing the up-down direction) and is long in the front-rear direction. A through hole 24 is formed in the front end of the fastening portion 21C, and a stud bolt sb that protrudes upward is provided in the front-rear central portion and rear end portion of the fastening portion 21C, respectively. A stud bolt sb provided on the fastening portion 21B of the second busbar 20B is inserted into the through hole 24 of the fastening portion 21C, and the front end portions of the fastening portion 21B and the fastening portion 21C, which are overlapped with each other, are joined by welding or the like to obtain the second busbar 20B having the second shape shown in Figure 4.

[0024] In a state in which the first bus bar 20A and the second bus bar 20B having the second shape are assembled to the housing 10, the fastening portion 21A of the first bus bar 20A functions as the input / output portion 2A, the front end portion (portion including the stud bolt sb protruding from the fastening portion 21B) of the fastening portion 21C of the second bus bar 20B functions as the input / output portion 2B, and the front-to-rear central portion (portion including the front stud bolt sb of the pair of front and rear stud bolts sb protruding from the fastening portion 21C) of the second bus bar 20B functions as the input / output portion 2C. In other words, the auxiliary bus bar 20C is configured to supplement the portion corresponding to the portion to the right of the cutting point P separated from the first bus bar 20A having the first shape (particularly the right fastening portion 21A). Furthermore, a rear end portion of fastening portion 21C of second bus bar 20B (a portion including the rear stud bolt sb of a pair of front and rear stud bolts sb protruding from fastening portion 21C) functions as an input / output portion 2D (see FIGS. 1 and 2).

[0025] 3 and the second shape shown in FIG. 4, with respect to the multiple "input / output portions" (input / output portions 2A to 2C), in the first shape shown in FIG. 3, the input / output portions 2A and 2C belong to the first bus bar 20A and the input / output portion 2B belongs to the second bus bar 20B, whereas in the second shape shown in FIG. 4, unlike the first shape shown in FIG. 3, the input / output portion 2A belongs to the first bus bar 20A and the input / output portions 2B and 2C belong to the second bus bar 20B. With respect to the multiple "component attachment portions" (multiple terminal portions 23A and 23B), in both the first shape shown in FIG. 3 and the second shape shown in FIG. 4, the multiple terminal portions 23A belong to the first bus bar 20A and the multiple terminal portions 23B belong to the second bus bar 20B. In other words, in the first shape shown in Fig. 3 and the second shape shown in Fig. 4, the arrangement and number of "input / output sections" (input / output sections 2A to 2C) belonging to the first bus bar 20A (second bus bar 20B) are different, while the arrangement and number of "component mounting sections" (multiple terminal sections 23A, 23B) belonging to the first bus bar 20A (second bus bar 20B) are the same. The first bus bar 20A and the second bus bar 20B having the first shape shown in Fig. 3 and the first bus bar 20A and the second bus bar 20B having the second shape shown in Fig. 4 have been described above.

[0026] When manufacturing the electrical junction box 1, first, one of the first bus bar 20A and the second bus bar 20B having the first shape shown in Fig. 3 and the first bus bar 20A and the second bus bar 20B having the second shape shown in Fig. 4 is selected, and the selected first bus bar 20A and the second bus bar 20B are prepared (first step). Next, the prepared (selected) first bus bar 20A and the second bus bar 20B are assembled into the housing 10 (second step). In this way, the electrical junction box 1 shown in Figs. 1 and 2 is obtained.

[0027] <Third embodiment> In the above first and second embodiments, one of the first bus bar 20A and the second bus bar 20B having the first shape (first embodiment) shown in FIG. 3 and the first bus bar 20A and the second bus bar 20B having the second shape (second embodiment) shown in FIG. 4 is selected based on the specifications of the electric connection box 1, and the selected first bus bar 20A and the second bus bar 20B are assembled to the housing 10. In contrast, instead of the first bus bar 20A and the second bus bar 20B having the second shape shown in FIG. 4, the first bus bar 20A and the second bus bar 20B having the shape shown in FIG. 5 may be used as a third embodiment. The shape shown in FIG. 5 is similar to the shape shown in FIG. 4 (second embodiment) in that the first bus bar 20A and the second bus bar 20B have a shape different from the above-mentioned basic shape (first embodiment, see FIG. 3), and therefore will be referred to as the second shape hereinafter as in the second embodiment.

[0028] In other words, based on the specifications of the electrical connection box 1, one of the first bus bar 20A and the second bus bar 20B having the first shape (first embodiment) shown in Figure 3 and the first bus bar 20A and the second bus bar 20B having the second shape (third embodiment) shown in Figure 5 may be selected, and the selected first bus bar 20A and the second bus bar 20B may be assembled to the housing 10.

[0029] The first bus bar 20A and the second bus bar 20B having the second shape shown in Fig. 5 will be described below. The second bus bar 20B having the second shape shown in Fig. 5 is obtained by separating the portion on the left side of the cutting point Q (see Fig. 4) from the second bus bar 20B having the second shape shown in Fig. 4, for example by cutting and removing it, and assembling the auxiliary bus bar 20C shown in Fig. 5, which has a different shape from the auxiliary bus bar 20C shown in Fig. 4, to the fastening portion 21B. The standing portion 22B included in the separated portion on the left side of the cutting point Q in the second bus bar 20B shown in Fig. 4 (hereinafter referred to as the "separated portion") includes some of the multiple terminal portions 23B (see Fig. 4).

[0030] The auxiliary busbar 20C shown in Fig. 5 differs from the auxiliary busbar 20C shown in Fig. 4 in that the portion corresponding to the input / output portion 2D (the rear end portion of the auxiliary busbar 20C shown in Fig. 4) has been removed, and that the portion corresponding to the input / output portion 2B (the front end portion of the auxiliary busbar 20C shown in Fig. 4) extends further to the left, and a terminal portion 23C having a shape that protrudes upward is provided at the extending end portion (left end portion) of the extended portion. The terminal portion 23C corresponds to the "component attachment portion" of the present invention.

[0031] The first busbar 20A having the second shape shown in Fig. 5 is obtained by assembling an auxiliary busbar 20D as a part of the first busbar 20A to the fastening portion 21A of the first busbar 20A having the second shape shown in Fig. 4. The metal auxiliary busbar 20D includes a fastening portion 21D and an upright portion 22D. The fastening portion 21D has a flat plate shape extending in the front-rear direction and the left-right direction (with the plate thickness direction facing the up-down direction). A through hole 24 is formed in the fastening portion 21D. A stud bolt sb provided in the fastening portion 21A of the first busbar 20A is inserted into the through hole 24 of the fastening portion 21D, and the fastening portion 21A and the fastening portion 21D, which are overlapped with each other, are joined by welding or the like, thereby obtaining the first busbar 20A having the second shape shown in Fig. 5. The standing portion 22D of the auxiliary busbar 20D has a shape in which the width direction perpendicular to the extending direction extends in a band shape in the up-down direction, and is disposed at a position corresponding to the position where the separated portion was disposed so as to complement the separated portion. On the upper end surface (upper side end surface) of the standing portion 22D, a plurality of terminal portions 23D having a shape protruding upward are provided so as to be aligned along the extending direction of the standing portion 22D in correspondence with the plurality of terminal portions 23B provided in the separated portion. The terminal portions 23D correspond to the "component attachment portion" of the present invention.

[0032] In a state where the first bus bar 20A and the second bus bar 20B having the second shape shown in FIG. 5 are assembled to the housing 10, the fastening portion 21D (portion including the stud bolt sb protruding from the fastening portion 21A) of the first bus bar 20A functions as the input / output portion 2A, the front end portion (portion including the stud bolt sb protruding from the fastening portion 21B) of the fastening portion 21C of the second bus bar 20B functions as the input / output portion 2B, and the rear end portion (portion including the stud bolt sb protruding from the fastening portion 21C) of the second bus bar 20B functions as the input / output portion 2C. That is, the auxiliary bus bar 20C is configured to supplement a portion corresponding to a portion on the right side of the break point P separated from the first bus bar 20A having the first shape (particularly, the right fastening portion 21A), and the auxiliary bus bar 20D is configured to supplement a portion corresponding to a portion on the left side of the break point Q separated from the second bus bar 20B having the first shape (particularly, a part of the multiple terminal portions 23B).

[0033] Comparing the first shape shown in FIG. 3 with the second shape shown in FIG. 5, with regard to the multiple "input / output parts" (input / output parts 2A to 2C), in the first shape shown in FIG. 3, input / output parts 2A and 2C belong to the first bus bar 20A and input / output part 2B belongs to the second bus bar 20B, whereas in the second shape shown in FIG. 5, unlike the first shape shown in FIG. 3, input / output part 2A belongs to the first bus bar 20A and input / output parts 2B and 2C belong to the second bus bar 20B. With regard to the multiple "part mounting portions" (multiple terminal portions 23A, 23B, 23C, 23D), in the first shape shown in FIG. 3, the multiple terminal portions 23A belong to the first bus bar 20A and the multiple terminal portions 23B belong to the second bus bar 20B, whereas in the second shape shown in FIG. 5, unlike the first shape shown in FIG. 3, the multiple terminal portions 23A, 23D belong to the first bus bar 20A and the multiple terminal portions 23B, 23C belong to the second bus bar 20B. In other words, between the first shape shown in Figure 3 and the second shape shown in Figure 5, the arrangement and number of "input / output sections" belonging to the first bus bar 20A (second bus bar 20B) for multiple "input / output sections" (input / output sections 2A to 2C) are different, and the arrangement and number of "component mounting sections" belonging to the first bus bar 20A (second bus bar 20B) for multiple "component mounting sections" (multiple terminal sections 23A, 23B, 23C, 23D) are also different.

[0034] <Actions and Effects> As described above, according to the manufacturing method of the electric connection box 1 according to the present embodiment, the shapes of the first bus bar 20A and the second bus bar 20B are selected to be the first shape or the second shape based on the required specifications for the electric connection box 1. Here, in the first shape, the first bus bar 20A serves some of the multiple input / output parts (input / output parts 2A and 2C), and the second bus bar 20B serves the remaining parts (input / output part 2B) of the multiple input / output parts other than the first part. In the second shape, the first bus bar 20A serves the other part (input / output part 2A) of the multiple input / output parts, and the second bus bar 20B serves the remaining parts (input / output parts 2B and 2C) of the multiple input / output parts other than the other part. In this way, by changing the shapes of the first bus bar 20A and the second bus bar 20B, various required specifications can be met. In addition, regardless of whether the first bus bar 20A and the second bus bar 20B have the first shape or the second shape, the housing 10 can accommodate the first bus bar 20A and the second bus bar 20B. Therefore, the manufacturing method of the electric junction box 1 according to this embodiment makes it possible to reduce the number of types (product numbers) of bus bars and housings that need to be prepared while configuring the electric junction box 1 so as to meet a plurality of required specifications.

[0035] Furthermore, in the first shape, the first bus bar 20A and the second bus bar 20B having a basic shape are used, and in the second shape, a portion is separated (for example, cut and removed) from the first bus bar 20A and the second bus bar 20B having the basic shape, and the auxiliary bus bar 20C and the auxiliary bus bar 20D are assembled. Therefore, it is possible to reduce the types (product numbers) of bus bars and housings to be prepared without excessively complicating the manufacturing process of the electrical junction box 1.

[0036] <Other forms> 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 appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

[0037] Here, the features of the embodiment of the manufacturing method of the electric junction box 1 according to the present invention described above will be briefly summarized and listed in the following [1] to [3].

[0038] [1] A method for manufacturing an electric junction box, the method comprising the steps of: manufacturing an electric junction box (1) including a first bus bar (20A) having a shape selected from a plurality of shapes; a second bus bar (20B) having a shape selected from a plurality of shapes; a housing (10) that accommodates the first bus bar (20A) and the second bus bar (20B); and a plurality of input / output parts (2A to 2C) to which terminals connected to an external power source are to be connected, The first bus bar (20A) and the second bus bar (20B) are a first shape in which a portion (2A, 2C) of the plurality of input / output parts belongs to the first bus bar (20A) and a remaining portion (2B) of the plurality of input / output parts other than the portion belongs to the second bus bar (20B); a second shape in which another part (2A) of the plurality of input / output parts belongs to the first bus bar (20A) and the remaining parts (2B, 2C) of the plurality of input / output parts other than the other part belong to the second bus bar (20B); The shape of one of the above can be selected, The housing (10) is a bus bar (20A) and a bus bar (20B) each having the first shape, and a bus bar (20A) and a bus bar (20B) each having the second shape, The manufacturing method includes: a first step of configuring the first bus bar (20A) and the second bus bar (20B) to have one of the first shape and the second shape selected based on a specification of the electric connection box (1); and a second step of accommodating the first bus bar (20A) and the second bus bar (20B) constructed in the first step in the housing (10). A manufacturing method for an electrical junction box.

[0039] According to the electrical connection box having the configuration of [1] above, the shapes of the first bus bar and the second bus bar are selected to be one of the first shape and the second shape based on the required specifications of the electrical connection box. Here, in the first shape, the first bus bar serves a part of the multiple input / output parts, and the second bus bar serves the remaining parts other than the part. In the second shape, the first bus bar serves the other part of the multiple input / output parts, and the second bus bar serves the remaining parts other than the remaining part. In this way, by changing the shapes of the first bus bar and the second bus bar, it is possible to meet various required specifications. In addition, regardless of whether the first bus bar and the second bus bar have the first shape or the second shape, the housing can accommodate the first bus bar and the second bus bar. Therefore, the manufacturing method of this configuration can reduce the types (product numbers) of bus bars and housings to be prepared while configuring an electrical connection box to meet multiple required specifications.

[0040] [2] In the manufacturing method according to the above [1], In the first step, When the first shape is selected, the first bus bar (20A) and the second bus bar (20B) having a basic shape prepared in advance are used, When the second shape is selected, at least one of the following processes is performed: a process in which a portion of the first bus bar (20A) having the basic shape is separated, and a first auxiliary bus bar (20C) is attached to the second bus bar (20B) so as to complement the separated portion; and a process in which a portion of the second bus bar (20B) having the basic shape is separated, and a second auxiliary bus bar (20D) is attached to the first bus bar (20A) so as to complement the separated portion. A manufacturing method for an electrical junction box.

[0041] According to the manufacturing method of the electrical junction box having the configuration [2] above, in the first shape, the first bus bar and the second bus bar having a basic shape are used, and in the second shape, a portion is separated (e.g., cut and removed) from the first bus bar and the second bus bar having the basic shape, and the first auxiliary bus bar and the second auxiliary bus bar are assembled. Therefore, according to the manufacturing method of this configuration, it is possible to reduce the types (product numbers) of bus bars and housings to be prepared without excessively complicating the manufacturing process of the electrical junction box.

[0042] [3] In the manufacturing method according to the above [1] or [2], The electrical connection box (1) comprises: Further comprising a plurality of component mounting portions (23A to 23D) on which electronic components (R) are to be mounted, In the first shape, a portion (23A) of the plurality of component mounting portions belongs to the first bus bar (20A), and a remaining portion (23B) of the plurality of component mounting portions other than the portion belongs to the second bus bar (20B), In the second shape, another part (23A, 23D) of the plurality of component mounting portions belongs to the first bus bar (20A), and a remaining part (23B, 23C) of the plurality of component mounting portions other than the other part belongs to the second bus bar (20B). A manufacturing method for an electrical junction box.

[0043] According to the manufacturing method of the electrical junction box having the configuration [3] above, in the first shape, the first bus bar serves a portion of the multiple component mounting portions, and the second bus bar serves the remaining portions of the multiple component mounting portions other than the first portion. In the second shape, the first bus bar serves the other portion of the multiple component mounting portions, and the second bus bar serves the remaining portions of the multiple component mounting portions other than the other portion. This makes it possible to meet an even greater variety of required specifications by changing the shapes of the first bus bar and the second bus bar. [Explanation of symbols]

[0044] 1 Electrical junction box 2A input / output section 2B Input / output section 2C input / output section 10. Housing 20A 1st bus bar 20B 2nd bus bar 20C Auxiliary bus bar (first auxiliary bus bar) 20D Auxiliary bus bar (second auxiliary bus bar) 23A Terminal section (parts mounting section) 23B Terminal section (parts mounting section) 23C Terminal section (parts mounting section) 23D Terminal section (parts mounting section)

Claims

1. A method for manufacturing an electric junction box, the method comprising: manufacturing an electric junction box including: a first bus bar having a shape selected from a plurality of shapes; a second bus bar having a shape selected from a plurality of shapes; a housing that accommodates the first bus bar and the second bus bar; and a plurality of input / output units to which terminals connected to an external power source are to be connected, The first bus bar and the second bus bar are a first shape in which some of the plurality of input / output units belong to the first bus bar, and the remaining parts of the plurality of input / output units other than the some belong to the second bus bar; a second shape in which another part of the plurality of input / output units belongs to the first bus bar, and the remaining part of the plurality of input / output units other than the other part belongs to the second bus bar; The shape of one of the above can be selected, The housing includes: a bus bar configured to accommodate the first bus bar and the second bus bar having the first shape, and the first bus bar and the second bus bar having the second shape, The manufacturing method includes: a first step of configuring the first bus bar and the second bus bar to have one of the first shape and the second shape selected based on a specification of the electrical junction box; a second step of housing the first bus bar and the second bus bar constructed in the first step in the housing. A manufacturing method for an electrical junction box.

2. The method according to claim 1, In the first step, When the first shape is selected, the first bus bar and the second bus bar having a basic shape prepared in advance are used, When the second shape is selected, at least one of the following processes is performed: a process in which a portion of the first bus bar having the basic shape is separated, and a first auxiliary bus bar is attached to the second bus bar so as to complement the separated portion; and a process in which a portion of the second bus bar having the basic shape is separated, and a second auxiliary bus bar is attached to the first bus bar so as to complement the separated portion. A manufacturing method for an electrical junction box.

3. The method according to claim 1 or 2, The electrical connection box includes: The electronic component mounting device further includes a plurality of component mounting portions to which electronic components are to be mounted, In the first shape, some of the plurality of component mounting portions belong to the first bus bar, and the remaining portion of the plurality of component mounting portions other than the some belongs to the second bus bar, In the second shape, another part of the plurality of component mounting portions belongs to the first bus bar, and a remaining part of the plurality of component mounting portions other than the another part belongs to the second bus bar. A manufacturing method for an electrical junction box.

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