Electric connection box

Abstract

To provide a technology for achieving a compact electric connection box.SOLUTION: The electric connection box includes a case, a plurality of first bus bar terminals attached to the case and connected to a first electronic component, a first bus bar provided on the surface of the case and connected to each of the first bus bar terminals, a plurality of second bus bar terminals attached to the case and connected to a second electronic component, and a second bus bar provided on the surface of the case and connected to each of the second bus bar terminals. When this electric connection box is observed from above, at least one of the second bus bar terminals and the second bus bar is arranged between the first bus bar terminals.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This specification discloses a technique relating to an electrical junction box. [Background technology]

[0002] Patent Document 1 discloses an electrical junction box for connecting electronic components. The electrical junction box of Patent Document 1 has a bus bar having a bus bar terminal arranged on a case surface. The electronic component is connected to the bus bar terminal. In order to connect one electronic component to the electrical junction box, a plurality of bus bars are arranged in the electrical junction box. Also, in order to prevent the bus bars from being electrically connected to each other, gaps are provided between each bus bar. In order to accommodate a plurality of electronic components in the electrical junction box of Patent Document 1, bus bars corresponding to the number of electronic components are arranged. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-004022 A Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, in Patent Document 1, in order to arrange a plurality of electronic components, bus bars corresponding to the number of electronic components are arranged on the surface of the electrical junction box. The area in which the bus bars corresponding to a specific electronic component are arranged is different from the area in which the bus bars corresponding to other electronic components are arranged. Therefore, when the number of electronic components connected to the electrical junction box increases, it becomes necessary to secure a large area for arranging the bus bars, and the size of the electrical junction box increases. That is, the area on the surface of the electrical junction box where the bus bars are not arranged increases, and the size of the electrical junction box increases. The present specification aims to provide a technology for realizing a small electrical junction box by devising the arrangement of the bus bars. [Means for solving the problem]

[0005] A first technique disclosed in this specification may be an electrical junction box including a case, a plurality of first busbar terminals attached to the case and connected to a first electronic component, a first busbar provided on a surface of the case and connected to each of the first busbar terminals, a plurality of second busbar terminals attached to the case and connected to a second electronic component, and a second busbar provided on the surface of the case and connected to each of the second busbar terminals. When observed from above the case, at least one of the second busbar terminals and the second busbar may be disposed between the first busbar terminals.

[0006] A second technology disclosed in this specification is an electrical connection box of the first technology, wherein the first bus bar terminal is provided on the front side of the case, the second bus bar terminal is provided on the back side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on the front side of the case, and the first bus bar and the second bus bar are arranged alternately in the first direction.

[0007] A third technology disclosed in this specification is an electrical connection box of the first technology, wherein the first bus bar terminal is provided on the front side of the case, the second bus bar terminal is provided on the back side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on the front side of the case, and either one of the first bus bar and the second bus bar is arranged adjacent to each other in the first direction.

[0008] A fourth technology disclosed in this specification is the electrical junction box of the first technology, wherein the first bus bar terminal is provided on a front surface side of the case, and the second bus bar terminal is provided on a back surface side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on the front surface of the case, and when a direction perpendicular to the first direction on the front surface of the case is defined as a second direction, the first bus bar extends from the first bus bar terminal toward one side of the second direction, and the second bus bar extends from the second bus bar terminal toward the other side of the second direction, and the first bus bar terminal and the second bus bar terminal are arranged alternately along the first direction, or at least one of the first bus bar terminal and the second bus bar terminal is arranged in a position shifted in the second direction.

[0009] A fifth technology disclosed in this specification is an electrical junction box of the first technology, wherein the first busbar terminal is provided on a front surface side of the case, and the second busbar terminal is provided on a back surface side of the case, the first busbar and the second busbar are arranged side by side in a first direction on the front surface of the case, and when a direction perpendicular to the first direction on the front surface of the case is defined as a second direction, the first busbar extends from the first busbar terminal toward one side of the second direction and the second busbar extends from the second busbar terminal toward the other side of the second direction, the first busbar terminal and the second busbar terminal are arranged along the first direction, and either one of the first busbar terminal and the second busbar terminal is arranged adjacent to each other in the first direction.

[0010] A sixth technology disclosed in this specification is an electrical connection box of any of the first to fifth technologies, in which at least one of the first bus bar and the second bus bar forms a vertical bus bar in an upright position with its side in contact with the surface of the case.

[0011] A seventh technique disclosed in this specification is the electrical junction box of the sixth technique, wherein the vertical bus bar has a bent portion at a middle position.

[0012] An eighth technology disclosed in this specification is an electrical connection box of the sixth or seventh technology, wherein the bus bar constituting the vertical bus bar has the first bus bar terminal and the second bus bar terminal provided on a surface of the case, and may penetrate from the surface to the back surface of the case at an end opposite to the first bus bar terminal and the second bus bar terminal. Effect of the Invention

[0013] According to the first technology, by disposing the second busbar in the gap between the first busbars, it is possible to effectively utilize the area where no busbar was disposed in the past. As a result, it is possible to reduce the area on the case surface where no busbar is disposed, and it is possible to realize a small-sized electrical connection box. In this specification, "observing from above the case" means observing the electronic components (busbar terminals connecting the electronic components) and the case from a direction perpendicular to the case surface. In other words, it means projecting the electronic components (busbar terminals) onto the case surface and viewing them in a plan view when the electrical connection box is disposed on a horizontal plane so that the electronic components (busbar terminals) are located above (or below) the case surface.

[0014] Furthermore, the electrical junction box disclosed in this specification does not only have bus bars (first bus bar and second bus bar) connected to two electronic components. The first electronic component (or first bus bar, first bus bar terminal) and second electronic component (or second bus bar, second bus bar terminal) disclosed in this specification refer to one of a plurality of electronic components assembled in the electrical junction box as the first electronic component, and any of the other one or more electronic components as the second electronic component. Therefore, the technology disclosed in this specification can also be applied to an electrical junction box to which three or more electronic components are assembled.

[0015] According to the second technique, electronic components can be assembled on the front and back surfaces of the case. That is, a first electronic component connected to a first busbar terminal can be assembled on the front surface of the case, and a second electronic component connected to a second busbar terminal can be assembled on the back surface of the case. As a result, the busbars (first busbar and second busbar) can be arranged without gaps on the surface of the case where the busbars are arranged (the front surface of the case). As a result, the degree of freedom in arranging the busbars on the front surface of the case is increased, and the area on the front surface of the case where the busbars are not arranged can be further reduced, thereby realizing a smaller electrical junction box.

[0016] According to the third technique, electronic components can be efficiently arranged with respect to the electrical junction box. For example, if the second electronic component is smaller than the first electronic component, the second busbar can be arranged adjacent to the first busbar. By efficiently arranging the electronic components with respect to the electrical junction box, the busbars can be efficiently arranged on the surface of the case.

[0017] According to the fourth technique, electronic components can be mounted on the front and back surfaces of the case, and the creepage distance between the busbars can be increased. By mounting electronic components on the front and back surfaces of the case, the same effects as those described in the second technique can be obtained, and electrical conduction between the busbars (between the first busbar terminals, or between the first busbar terminals and the second busbar terminals) can be suppressed.

[0018] According to the fifth technique, electronic components can be mounted on the front and back surfaces of the case, the creepage distance between the bus bars can be increased, and the electronic components can be arranged efficiently. The same effects as those described in the second to fourth techniques can be obtained.

[0019] According to the sixth technology, the area on the surface of the case where the busbars are arranged can be reduced. In other words, the creepage distance between the busbars can be increased. Furthermore, since the contact area between the case and the busbar is reduced, the heat dissipation of the busbar is improved. Typically, the busbar is flat and has a rectangular cross section perpendicular to the longitudinal direction. Thus, a vertical busbar refers to a busbar that stands upright with the short sides (sides) of the rectangle in contact with the surface of the case.

[0020] According to the seventh technique, the bent portion can prevent the busbar (vertical busbar) from falling over. Alternatively, it can be said that parts, structures, etc. for preventing the busbar from falling over can be omitted.

[0021] According to the eighth technology, since the busbar penetrates from the front surface to the back surface of the case, the penetration portion of the busbar (the busbar and the through hole through which the busbar penetrates) can prevent the vertical busbar from falling over. In addition, the busbar terminals (first busbar terminal, second busbar terminal) are located on the front surface of the case, and the ends of the busbars (first busbar, second busbar) opposite to the side where the busbar terminals are provided are located on the back surface of the case. [Brief description of the drawings]

[0022] [Figure 1] 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 front view of the electrical junction box according to the first embodiment. [Diagram 3] 1 is a plan view of an electrical junction box according to a first embodiment of the present invention; [Figure 4] FIG. 2 is a perspective view illustrating a manufacturing method of the electrical junction box according to the first embodiment. [Diagram 5] An enlarged view of the area surrounded by dashed line V in FIG. 3 is shown. [Figure 6] FIG. 4 is a partial plan view of a modified example of the electric junction box of the first embodiment. [Figure 7] FIG. 4 is a partial plan view of a modified example of the electric junction box of the first embodiment. [Figure 8] FIG. 4 is a partial plan view of a modified example of the electric junction box of the first embodiment. [Figure 9] FIG. 4 is a partial plan view of a modified example of the electric junction box of the first embodiment. [Figure 10] FIG. 4 is a partial plan view of a modified example of the electric junction box of the first embodiment. [Figure 11] FIG. 13 is a perspective view of an electrical junction box according to a second embodiment. [Figure 12] FIG. 13 is a perspective view of an electrical junction box according to a third embodiment. [Figure 13] FIG. 13 is a perspective view of an electrical junction box according to a third embodiment. [Figure 14] FIG. 13 is a plan view of an electrical junction box according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] (First embodiment) The electric junction box 100 will be described with reference to Fig. 1 to Fig. 5. Fig. 1 and Fig. 2 show a state in which electronic components 20, 40, 60, and 80 are connected to the electric junction box 100. Fig. 3 shows a view (i.e., a plan view) of the electric junction box 100 observed from above (Z+ side). Among the coordinates in the figures, the X-axis is an example of a first direction, and the Y-axis is an example of a second direction.

[0024] 1 and 2, the electrical junction box 100 includes a case 10, first bus bars 25, 26, second bus bars 65, 66, third bus bars 45, 46, and fourth bus bars 85, 86. A first electronic component 20 is connected to the first bus bars 25, 26, a second electronic component 60 is connected to the second bus bars 65, 66, a third electronic component 40 is connected to the third bus bars 45, 46, and a fourth electronic component 80 is connected to the fourth bus bars 85, 86.

[0025] As shown in FIG. 1 to FIG. 3, the first bus bars 25, 26 are provided on the surface of the case 10 with a gap between them. Specifically, the first bus bars 25, 26 are arranged side by side with a gap in the X-axis direction, and the contact portions 25a, 26a are in contact with the surface of the case 10. The contact portions 25a, 26a extend in the same direction (Y+ direction) along the Y-axis direction. The first bus bars 25, 26 are provided with rib portions 25b, 26b protruding in the Z-axis direction. The rib portions 25b, 26b are provided on one end of the contact portions 25a, 26a. The other end of the contact portions 25a, 26a is connected to an external power source (not shown). The first bus bar terminals 23, 24 are connected to the upper ends of the rib portions 25b, 26b. That is, the first bus bar terminals 23, 24 are attached to the case 10 on the surface side of the case 10 via the rib portions 25b, 26b. The connection terminals 21 and 22 of the first electronic component 20 are connected to the first bus bar terminals 23 and 24.

[0026] The contact portions 65a, 66a of the second bus bars 65, 66 are provided on the surface of the case 10 with a gap between them. Specifically, the second bus bars 65, 66 are arranged side by side with a gap between them in the X-axis direction, and the contact portions 65a, 66a are in contact with the surface of the case 10. The contact portions 65a, 66b extend in the same direction (Y+ direction) along the Y-axis direction. The second bus bars 65, 66 are provided with rib portions 65b, 66b protruding in the Z-axis direction (Z- direction). The rib portions 65b, 66b are provided on one end of the contact portions 65a, 66b, and extend through the case 10 to the back surface of the case 10. The other ends of the contact portions 65a, 66b are connected to an external power source (not shown). The second bus bar terminals 63, 64 are connected to the lower ends of the rib portions 65b, 66b. That is, the second bus bar terminals 63, 64 are attached to the case 10 on the back surface side of the case 10 via the second bus bars 65, 66. To the second bus bar terminals 63, 64, the connection terminals 61, 62 of the second electronic component 60 are connected.

[0027] Here, the relationship between the first busbars 25, 26 and the second busbars 65, 66 will be described with reference to Fig. 5. In Fig. 5, the case 10 is omitted, the structure on the front side of the case 10 is shown by solid lines, and the structure on the front side of the case 10 is shown by dashed lines. As shown in Fig. 5, the second busbar terminal 63 and the second busbar 65 are disposed between the first busbar terminals 23, 24. Furthermore, the first busbar terminal 24 and the first busbar 26 are disposed between the second busbar terminals 63, 64. That is, one of the first busbar terminals 23, 24 and one of the second busbar terminals 63, 64 are disposed alternately in line in the X-axis direction.

[0028] By arranging the busbar terminals 23, 24, 63, 64 (busbars 25, 26, 65, 66) in this manner, the second busbar terminal 63 can be arranged in the gap between the first busbar terminals 23, 24 that was not used in the past. Alternatively, it can be understood that the first busbar terminal 24 can be arranged in the gap between the second busbar terminals 63, 64 that was not used in the past. The electric junction box 100 effectively utilizes the area (between the first busbar terminals 23, 24 and between the second busbar terminals 63, 64) where the busbars were not arranged in the past. As a result, the electric junction box 100 can be made smaller than the conventional electric junction box. In addition, the rib portions 65b, 66b of the second busbars 65, 66 extend to the back surface of the case 10, and the second busbar terminals 63, 64 are arranged on the back surface of the case 10. Therefore, the second electronic component 60 is assembled to the back surface of the case 10. The bus bars 25, 26, 65, and 66 can be arranged on the surface of the case 10 without having to consider interference between the first electronic component 20 and the second electronic component 60.

[0029] As shown in FIG. 1 to FIG. 3, the third bus bars 45, 46 are provided on the surface of the case 10 with a gap between them. Specifically, the third bus bars 45, 46 are arranged side by side with a gap between them in the X-axis direction, and the contact portions 45a, 46a are in contact with the surface of the case 10. The contact portions 45a, 46b extend in the same direction (Y+ direction) along the Y-axis direction. The third bus bars 45, 46 are provided with rib portions 45b, 46b protruding in the Z-axis direction. The rib portions 45b, 46b are provided at one end of the contact portions 45a, 46b. The other ends of the contact portions 45a, 46b are connected to an external power source (not shown). The third bus bar terminals 43, 44 are connected to the upper ends of the rib portions 45b, 46b. That is, the third bus bar terminals 43, 44 are attached to the case 10 on the surface side of the case 10 via the third bus bars 45, 46. The connection terminals 41, 42 of the third electronic component 40 are connected to the third bus bar terminals 43, 44.

[0030] The contact portions 85a, 86a of the fourth bus bars 85, 86 are provided on the surface of the case 10 with a gap between them. Specifically, the fourth bus bars 85, 86 are arranged side by side with a gap between them in the X-axis direction, and the contact portions 85a, 86a are in contact with the surface of the case 10. The contact portions 85a, 86b extend in the same direction (Y+ direction) along the Y-axis direction. The fourth bus bars 85, 86 are provided with rib portions 85b, 86b protruding in the Z-axis direction (Z- direction). The rib portions 85b, 86b are provided on one end of the contact portions 85a, 86b, and extend through the case 10 to the back surface of the case 10. The other ends of the contact portions 85a, 86b are connected to an external power source (not shown). The fourth bus bar terminals 83, 84 are connected to the lower ends of the rib portions 85b, 86b. That is, the fourth bus bar terminals 83, 84 are attached to the back surface side of the case 10 via the fourth bus bars 85, 86. The fourth bus bar terminals 83, 84 have connection terminals 81, 82 of the fourth electronic component 80 connected thereto.

[0031] 1 to 3, the relationship between third busbars 45, 46 and fourth busbars 85, 86 has similar characteristics to the relationship between first busbars 25, 26 and second busbars 65, 66. Therefore, a description of the characteristics resulting from the relationship between third busbars 45, 46 and fourth busbars 85, 86 will be omitted.

[0032] A manufacturing method of the electric junction box 100 will be described with reference to FIG. 4. FIG. 4 shows a state where the third bus bar 46 and the fourth bus bar 86 are arranged in the case 10. The third bus bar 46 is arranged on the surface of the case 10 with the rib portion 45b facing upward (Z+ direction) and the contact portion 46a (see also FIG. 1) facing downward (Z- direction). The fourth bus bar 86 is arranged on the surface of the case 10 with the rib portion 86b facing downward (Z- direction) and the rib portion 86b passing through the through hole 12 provided in the case 10 and the contact portion 86a (see also FIG. 2). The first bus bars 25, 26 and the third bus bar 45 are arranged on the surface of the case 10 in the same manner as the third bus bar 46. The second bus bars 65, 66 and the fourth bus bar 85 are arranged on the surface of the case 10 in the same manner as the fourth bus bar 86. In electrical junction box 100, all of the contact portions of the bus bars (contact portions 25a, 26b, 65a, 66a, 45a, 46a, 85a, 86a) are disposed on the surface of case 10. Therefore, all of the bus bars (bus bars 25, 26, 65, 66, 45, 46, 85, 86) can be assembled on the surface side of case 10. Therefore, the assembly work of the bus bars to case 10 can be easily performed.

[0033] (Modification of the Electrical Junction Box 100) 6 to 10, modified examples of the electrical junction box 100 will be described. In the following description, the relationship between the first bus bars 25, 26 (first bus bar terminals 23, 24) and the second bus bars 65, 66 (second bus bar terminals 63, 64) will be mainly described.

[0034] 6 shows a plan view of the electrical junction box 100a. In the electrical junction box 100a, the relationship between the first bus bars 25, 26 and the second bus bars 65, 66 is the same as that of the electrical junction box 100. Also, like the electrical junction box 100, the first bus bar terminals 23a, 24a are arranged on the front surface of the case 10 and the second bus bar terminals 63a, 64a are arranged on the back surface of the case 10. Also like the electrical junction box 100, a gap is provided between the first bus bar terminals 23a, 24a and a gap is provided between the second bus bar terminals 63a, 64a.

[0035] The first busbar terminals 23a, 24a and the second busbar terminals 63a, 64a of the electric junction box 100a are larger than the first busbar terminals 23, 24 and the second busbar terminals 63, 64 of the electric junction box 100 (see FIG. 5 for comparison). Therefore, in the electric junction box 100a, the first busbar terminals 23a, 24a and the second busbar terminals 63a, 64a overlap with each other when viewed from above. However, in reality, the first busbar terminals 23a, 24a are arranged on the front surface of the case 10, and the second busbar terminals 63a, 64a are arranged on the back surface of the case 10, so that the busbar terminals 23a, 24a, 63a, 64a do not interfere with each other. In the electric junction box 100a, the second busbar 65 is arranged in the gap between the first busbar terminals 23, 24, and the first busbar 26 is arranged in the gap between the second busbar terminals 63, 64.

[0036] FIG. 7 shows a plan view of the electric connection box 100b. In the electric connection box 100b, both of the second busbar terminals 63 and 64 are disposed in the gap between the first busbar terminals 23 and 24. That is, the second busbar terminal 63 and the second busbar terminal 64 are disposed adjacent to each other in the X-axis direction. Similarly, both of the second busbars 65 and 66 are disposed in the gap between the first busbars 25 and 26. The second busbars 65 and 66 are disposed adjacent to each other in the X-axis direction. The electric connection box 100b is useful for connecting electronic components of different sizes. Specifically, when the second electronic component 60 is smaller than the first electronic component 20, the gap between the first busbars 25 and 26 (between the first busbar terminals 23 and 24) to which the first electronic component 20 is connected can be effectively used.

[0037] 8 shows a plan view of the electric junction box 100c. In the electric junction box 100c, both of the second busbar terminals 63 and 64 are disposed in the gap between the first busbar terminals 23 and 24, similar to the electric junction box 100b. In addition, both of the second busbars 65 and 66 are disposed in the gap between the first busbars 25 and 26. That is, in the electric junction box 100c, similar to the electric junction box 100b, the second busbar terminals 63 and 64 are disposed adjacent to each other in the X-axis direction, and the second busbars 65 and 66 are disposed adjacent to each other. However, unlike the electric junction box 100b, the electric junction box 100c has the first busbars 25 and 26 extending from the first busbar terminals 23 and 24 in the Y+ direction, and the second busbars 65 and 66 extending from the second busbar terminals 63 and 64 in the Y- direction. This makes it possible to increase the creepage distance between first bus bars 25, 26 and second bus bars 65, 66. Note that in electrical junction boxes 100, 100a as well, first bus bars 25, 26 may extend in the Y+ direction from first bus bar terminals 23, 24, and second bus bars 65, 66 may extend in the Y- direction from second bus bar terminals 63, 64.

[0038] 9 shows a plan view of the electrical junction box 100d. In the electrical junction box 100d, one of the first bus bars 25, 26 and one of the second bus bars 65, 66 are arranged alternately in the X-axis direction, as in the electrical junction box 100. However, in the electrical junction box 100d, the first bus bar terminal 23 and the second bus bar terminals 63, 64 are arranged in the X-axis direction, but the first bus bar terminal 24 is arranged at a position shifted in the Y+ direction with respect to the bus bar terminals 23, 63, 64.

[0039] FIG. 10 shows a plan view of the electric connection box 100e. In the electric connection box 100e, one of the first bus bars 25, 26 and one of the second bus bars 65, 66 are arranged alternately in the X-axis direction, as in the electric connection box 100d. In addition, the first bus bar terminal 23 and the second bus bar terminal 63, 64 are arranged in the X-axis direction, but the first bus bar terminal 24 is arranged at a position shifted in the Y+ direction with respect to the bus bar terminals 23, 63, 64. In the electric connection box 100e, unlike the electric connection box 100d, the first bus bars 25, 26 extend from the first bus bar terminals 23, 24 in the Y+ direction, and the second bus bars 65, 66 extend from the second bus bar terminals 63, 64 in the Y- direction. This allows the creepage distance between the first bus bars 25, 26 and the second bus bars 65, 66 to be increased.

[0040] (Second Example) 11, electric junction box 200 will be described. Electrical junction box 200 is a modified example of electric junction box 100, and differs from electric junction box 100 in the arrangement of first bus bars 225, 226, second bus bars 265, 266, third bus bars 245, 246, and fourth bus bars 285, 286 relative to case 10. For electric junction box 200, parts common to electric junction box 100 are given reference numbers that are the same as those given to electric junction box 100 or have the same last two digits, and descriptions thereof may be omitted.

[0041] Electrical junction box 200 includes case 210, first bus bars 225, 226, second bus bars 265, 266, third bus bars 245, 246, and fourth bus bars 285, 286. First bus bar terminals 223, 224 are connected to first bus bars 225, 226. Second bus bar terminals 263, 264 are connected to second bus bars 265, 266. Third bus bar terminals 243, 244 are connected to third bus bars 245, 246. Fourth bus bar terminals 283, 284 are connected to fourth bus bars 285, 286. The first electronic component 220 is connected to the first bus bar terminals 223, 224, the second electronic component 260 is connected to the second bus bar terminals 263, 264, the third electronic component 240 is connected to the third bus bar terminals 243, 244, and the fourth electronic component 280 is connected to the fourth bus bar terminals 283, 284.

[0042] In electric junction box 200, bus bars 225, 226, 265, 266, 245, 246, 285, and 286 (hereinafter collectively referred to as bus bars 225-286) have their sides in contact with the surface of case 210, forming vertical bus bars in an upright shape. Therefore, bus bars 225-286 have a smaller contact area with case 210 than bus bars 25-86 of electric junction box 100. In other words, bus bars 225-286 have a larger contact area with air than bus bars 25-86 of electric junction box 100. Therefore, electric junction box 200 can improve the heat dissipation of bus bars 225-286. Furthermore, electric junction box 200 can also increase the creepage distance between adjacent bus bars compared to electric junction box 100.

[0043] (Third Example) 12 to 14, electric junction box 300 will be described. Electric junction box 300 is a modified example of electric junction box 200, and the shapes of first bus bars 325, 326, second bus bars 365, 366, third bus bars 345, 346, and fourth bus bars 385, 386 are different from those of electric junction box 200. Note that FIG. 12 shows a state in which electronic components 320, 340, 360, and 380 are connected to electric junction box 300. Components of electric junction box 300 that are common to electric junction box 200 are given reference numbers with the same last two digits as those given to electric junction box 200, and descriptions thereof may be omitted.

[0044] 12, in electrical junction box 300, electronic components 320, 340, 360, and 380 are all disposed on the front surface side of case 310. In addition, in electrical junction box 300, bus bars 325, 326, 365, 366, 345, 346, 385, and 386 (hereinafter collectively referred to as bus bars 325-386) all penetrate case 310 and protrude to the back surface side of case 310. Although omitted in FIGS. 12 and 13, insulating walls 92 are provided around bus bars 325-386 to prevent bus bars 325-386 from falling over (see FIG. 14).

[0045] 13 and 14, electrical junction box 300 has a common feature with electrical junction box 100 (or electrical junction boxes 100a-100e which are its modifications) and electrical junction box 200 in that portions of second bus bars 365, 366 are disposed between first bus bar terminals 323, 324. Electrical junction box 300 also has a common feature with electrical junction box 200 in that bus bars 325-386 form vertical bus bars.

[0046] In electrical junction box 300, bus bar terminals 323, 324, 363, 364, 343, 344, 383, and 384 (hereinafter collectively referred to as bus bar terminals 323-384) are provided on the front surface of case 310. Bus bars 325-386 extend from bus bar terminals 323-384 to the rear surface of case 310 through through holes provided in case 310. Furthermore, bus bars 325-386 have bent portions 90 in their intermediate portions (between bus bar terminals 323-384 and the portions where bus bars 325-386 penetrate case 310).

[0047] In the electric junction box 300, the bus bars 325-386 form vertical bus bars, and thus the creepage distance between adjacent bus bars can be increased, as in the electric junction box 200. Furthermore, the insulating wall 92 is provided around the bus bars 325-386, and thus the creepage distance can be further increased. Furthermore, the bent portion 90 is provided at the middle portion of the bus bars 325-386, and thus the bus bars 325-386 can be prevented from falling over. Furthermore, the bus bars 325-386 penetrate from the front surface to the back surface of the case 310, and thus the through portion (the bus bars 325-386 and the side wall of the through hole) also prevents the bus bars 325-386 from falling over. As shown in FIG. 12, the electric junction box 300 can arrange the electronic components 320, 350, 360, 380 in a concentrated manner (close to each other) by providing the bent portion 90 at the bus bars 325-386.

[0048] (Other embodiments) In the above embodiment, an electrical junction box to which four electronic components are connected has been described. However, the technology disclosed in this specification is applicable to any electronic junction box to which two or more electronic components are connected, and the number of electronic components can be changed as desired. The gist of the technology disclosed in this specification is that a second bus bar terminal or a second bus bar to be connected to a second electronic component is disposed between two or more first bus bar terminals to be connected to a first electronic component. Therefore, other structures can be appropriately changed as necessary.

[0049] Although the embodiments of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples exemplified above. Furthermore, the technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings achieves multiple objectives simultaneously, and achieving one of the objectives itself has technical utility. [Explanation of symbols]

[0050] 10: Case 20: First electronic component 23, 24: First bus bar terminal 25,26: First bus bar 60: First electronic component 63,64: First bus bar terminal 65,66: First busbar 100: Electrical junction box

Claims

1. Case and a plurality of first bus bar terminals attached to the case and connected to a first electronic component; a first bus bar provided on a surface of the case and connected to each of the first bus bar terminals; a plurality of second bus bar terminals attached to the case and connected to second electronic components; a second bus bar provided on a surface of the case and connected to each of the second bus bar terminals, When observed from above the case, at least one of the second bus bar terminals and the second bus bar is arranged between the first bus bar terminals.

2. 2. The electrical connection box according to claim 1, the first bus bar terminal is provided on a front surface side of the case, The second bus bar terminal is provided on a back surface side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction (x) on a surface of the case, An electrical junction box, wherein the first bus bar and the second bus bar are arranged alternately in the first direction.

3. 2. The electrical connection box according to claim 1, the first bus bar terminal is provided on a front surface side of the case, The second bus bar terminal is provided on a back surface side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on a surface of the case, An electrical junction box, wherein either the first bus bar or the second bus bar is arranged adjacent to each other in the first direction.

4. 2. The electrical connection box according to claim 1, the first bus bar terminal is provided on a front surface side of the case, The second bus bar terminal is provided on a back surface side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on a surface of the case, on a surface of the case, when a direction perpendicular to the first direction is defined as a second direction (y), the first bus bar extends from the first bus bar terminal in one direction in the second direction, and the second bus bar extends from the second bus bar terminal in the other direction in the second direction, an electrical connection box, wherein the first bus bar terminal and the second bus bar terminal are arranged alternately along the first direction, or at least one of the first bus bar terminal and the second bus bar terminal is arranged at a position offset in the second direction.

5. 2. The electrical connection box according to claim 1, the first bus bar terminal is provided on a front surface side of the case, The second bus bar terminal is provided on a back surface side of the case, the first bus bar and the second bus bar are arranged side by side in a first direction on a surface of the case, on a surface of the case, when a direction perpendicular to the first direction is defined as a second direction, the first bus bar extends from the first bus bar terminal in one direction of the second direction, and the second bus bar extends from the second bus bar terminal in the other direction of the second direction, the first bus bar terminal and the second bus bar terminal are arranged along the first direction, An electrical junction box, wherein either the first bus bar terminal or the second bus bar terminal is arranged adjacent to each other in the first direction.

6. 6. The electrical connection box according to claim 1, an electrical junction box, wherein at least one of the first bus bar and the second bus bar constitutes a vertical bus bar having a side surface in contact with a surface of the case and standing upright.

7. 7. The electrical connection box according to claim 6, The vertical bus bar has a bent portion at an intermediate position.

8. 7. The electrical connection box according to claim 6, the busbar constituting the vertical busbar has the first busbar terminal and the second busbar terminal provided on a surface of the case, and penetrates from the surface to the back surface of the case at an end opposite to the first busbar terminal and the second busbar terminal.

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