Electrical Junction Box

Abstract

To facilitate a work of connecting an external device to a bus bar of an electric connection box.SOLUTION: A electric connection box includes a bus bar having a bus bar main body and a busbar terminal portion for connecting to an external device, a box main body provided with the bus bar, and a cover covering the box main body, and the box main body has a first region where the bus bar main body is provided and covered with the cover, and a second region where the bus bar terminal portion is provided and is exposed without being covered by the cover.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to an electrical junction box. [Background technology]

[0002] For example, electrical junction boxes (also called "junction boxes") are used in industrial products such as automobiles. Electrical junction boxes are used to connect external devices, such as power supplies, on-board devices, or other electrical junction boxes, to supply power. For example, to supply power from a battery to each of a number of on-board devices, electric wires from the battery are first connected to the electric junction box, and then electric wires are connected from the electric junction box to each of the on-board devices. The electrical junction box includes a box body in which a bus bar is provided, and a cover (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-154412 A Summary of the Invention [Problem to be solved by the invention]

[0004] In an assembly factory for products such as automobiles, an electrical junction box is subjected to work for connecting with an external device. In the assembly factory, the electrical junction box is in a state in which a cover is attached in advance to a box body on which a bus bar is provided, and is fixed to, for example, a body frame of an automobile. When connecting a bus bar of an external device to a terminal portion of a bus bar of the electrical junction box, it is necessary to once remove the cover of the electrical junction box, perform the work of connecting the bus bar, and then attach the cover.

[0005] For this reason, on production lines for products such as automobiles, particularly when work is performed to connect bus bars of external devices to the terminal portions of the bus bars of numerous electrical connection boxes, the effort required to remove and attach the covers reduces work efficiency. Therefore, an object of the present disclosure is to provide an electrical connection box that facilitates the task of connecting an external device to a bus bar. [Means for solving the problem]

[0006] An electrical connection box according to one embodiment of the present disclosure comprises a bus bar having a bus bar main body and a bus bar terminal portion for connecting to an external device, a box body in which the bus bar is provided, and a cover covering the box body, wherein the box body has a first region in which the bus bar main body is provided and covered by the cover, and a second region in which the bus bar terminal portion is provided and exposed without being covered by the cover. Effect of the Invention

[0007] According to the present disclosure, it is possible to facilitate the operation of connecting an external device to a bus bar of an electrical junction box. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of an electrical junction box according to the present embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the electrical junction box shown in FIG. [Diagram 3] FIG. 3 is a perspective view showing a state in which the cover is removed from the box body. [Figure 4] FIG. 4 is an explanatory diagram of the electrical junction box shown in FIG. 1 with a cover and a sensor removed. [Diagram 5] FIG. 5 is a plan view of a portion of the electrical junction box. [Figure 6] FIG. 6 is a perspective view of the sensor as seen from below. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Overview of the embodiment of the present disclosure> Below, an overview of the embodiments of the present disclosure will be listed and described. (1) The electrical connection box of this embodiment comprises a bus bar having a bus bar main body and a bus bar terminal portion for connecting to an external device, a box body in which the bus bar is provided, and a cover covering the box body, wherein the box body has a first region in which the bus bar main body is provided and covered by the cover, and a second region in which the bus bar terminal portion is provided and is not covered by the cover, exposing the bus bar terminal portion.

[0010] According to the electrical junction box of the present embodiment, the bus bar main body in the first region of the box body is covered with a cover, whereas the bus bar terminal in the second region of the box body is exposed and not covered by the cover. Therefore, an external device can be connected to the bus bar terminal without removing the cover. In other words, the work of connecting an external device to the bus bar of the electrical junction box is facilitated. As a result, the efficiency of the work can be improved, especially when the work of connecting an external device to the bus bar terminals of a large number of electrical junction boxes is performed.

[0011] (2) Also, preferably, the second region has a sensor attachment portion for attaching a sensor that measures a current flowing through the bus bar, and the sensor is exposed together with the bus bar terminal portion without being covered by the cover. In this case, it may be possible to remove or install the sensor without removing the cover. If the connector part for connecting the cable is exposed on the sensor, it is possible to connect the cable to the sensor without removing the cover.

[0012] (3) Also, preferably, the busbar has a first member as the busbar main body attached to the first region, and a second member including the busbar terminal portion and removably connected to the first member, and the sensor is integrated with the second member and detects current through the second member. In this case, by removing the second member from the first member, it is possible to remove the sensor together with the second member from the box body.

[0013] (4) Also, preferably, the second member is a conductor that is long in a first direction, the bus bar terminal portion is provided on one end side of the conductor, a central portion of the conductor is a portion to be detected by the sensor, and the other end side of the conductor is a connection portion with the first member, and the cover has a pair of cover side portions that cover the first member and the connection portion from both sides and a cover main body portion that connects the pair of cover side portions, and an opening is provided in the cover main body portion to allow the connection portion to pass through. In this case, the second member connected to the first member in the bus bar can be removed from the opening in the cover body, and therefore, even if the sensor is integrated with the second member, it is easy to remove the sensor from the second region of the box body by removing the second member from the first member.

[0014] (5) Preferably, the sensor attachment portion is provided with a recess or protrusion into which a protrusion or recess of the sensor fits to position the sensor at a specified position. In this case, the sensor can be easily positioned and attached to the second region. (6) More preferably, the protrusion and the recess are tightly fitted together. In this case, the sensor is fixed at a specified position in the second region by the fitting protrusion and recess.

[0015] (7) Also, preferably, the second member is fixed to the first member by a bolt tightened in a direction in which the second member overlaps the first member, the convex portion protruding in a direction parallel to the overlapping direction, and the concave portion being recessed in a direction parallel to the overlapping direction. In this case, when the bolt is tightened to attach the second member integrated with the sensor to the first member with the projection and recess aligned, the projection and recess fit together, facilitating the work of attaching the sensor to the second region of the box body.

[0016] <Details of the embodiment of the present disclosure> Hereinafter, the details of the embodiments of the present disclosure will be described with reference to the drawings. Note that at least some of the embodiments described below may be combined in any combination.

[0017] The electric junction box 10 (see FIG. 1) of this embodiment is mounted on, for example, an automobile, and is used in the middle of a path for supplying power from an on-board battery to each of a plurality of on-board devices, although not shown. The electric junction box 10 of this embodiment can also be said to be an electric junction box for relaying. In an automobile assembly factory, an operation is performed to connect a bus bar and a wire harness of an external device to the electric junction box 10 fixed to, for example, the body frame of the automobile.

[0018] [Overall configuration of electrical junction box 10] Fig. 1 is a perspective view of an electrical junction box 10 according to the present embodiment. In Fig. 1, a bus bar 90 for connecting to a first external device and a wire harness 91 for connecting to a second external device are indicated by virtual lines (two-dot chain lines). Fig. 2 is an exploded perspective view of the electrical junction box 10 shown in Fig. 1. The electrical junction box 10 includes a bus bar 11, a box body 12 on which the bus bar 11 is provided, and a cover 13 that covers the box body 12. Fig. 3 is a perspective view showing a state in which the cover 13 is removed from the box body 12.

[0019] The electrical junction box 10 of the present disclosure is defined as being up-down, front-rear, and left-right. The electrical junction box 10 has a box shape that is flat overall, although it has some irregularities. The flat direction, that is, the direction in which the thickness decreases, is defined as being up-down. The electrical junction box 10 shown in Figs. 1 and 2 has a first block B1 whose longitudinal direction is a first direction, and a second block B2 whose longitudinal direction is a second direction intersecting (perpendicular to) the first direction, and is substantially L-shaped when viewed from above. In the present disclosure, the first direction is defined as being up-down, and the second direction is defined as being left-right.

[0020] In the first block B1, the side to which the bus bar 90 for the first external device is connected is defined as the "front side", and the opposite side connected to the second block B2 is defined as the "rear side". In the second block B2, the side to which the wire harness 91 for the second external device is connected is defined as the "left side", and the opposite side is defined as the "right side". Each figure shows an XYZ orthogonal coordinate system. The Z direction is the direction from bottom to top (up-down direction), the Y direction is the front-rear direction (front to rear direction), and the X direction is the left-right direction (left to right direction).

[0021] The box body 12 has a first case (upper case) 14 and a second case (lower case) 15. Figures 1, 2 and 3 show the first case 14 and the second case 15 connected together. In Figure 3, a main bus bar 11 is provided between the first case 14 and the cover 13. A sub bus bar (not shown) is provided between the first case 14 and the second case 15. The second case 15 covers the first case 14 from below. The cover 13 covers the first case 14 from above.

[0022] The first case 14, the second case 15, and the cover 13 are made of synthetic resin and are each formed by injection molding. Each part of the first case 14 is provided with a wall portion 16 extending upward, and the first case 14 as a whole opens upward. A bus bar 11 (first bus bar 11) is provided between a pair of opposing walls 16, 16. In this embodiment, in addition to the first bus bar 11, a second bus bar 18 shown by a two-dot chain line is provided. The first bus bar 11 is substantially L-shaped when viewed from above in accordance with the shape of the box body 12. The shapes of the electrical connection box 10 (box body 12) and the bus bar 11 can be freely changed and may be other than an L-shape.

[0023] A sensor 19 is attached to the electrical junction box 10. The sensor 19 is attached to the box body 12 together with the bus bar 11. The sensor 19 detects the current flowing through a part of the bus bar 11 (a part of the second member 32 described below) in a non-contact manner. A detection signal from the sensor 19 is output to a control unit (not shown) through a cable connected to a connector portion 19a of the sensor 19. The sensor 19 monitors the current in the conductive path including the electrical junction box 10. The mounting structure of the sensor 19 to the box body 12 will be described later.

[0024] The first bus bar 11 and the second bus bar 18 are attached to the box body 12 by bolts. As will be described later, the first bus bar 11 is composed of a first member 31 and a second member 32, and the second member 32 is removable for maintenance such as replacing the sensor 19. Even when the second member 32 is removed, the first member 31 is not removed. A bolt that fixes the first member 31 during maintenance and is not removed is referred to as a "fixing bolt 17". In contrast, bolts 46, 47 other than the fixing bolt 17 are used to attach and remove the second member 32. One bolt 46 is referred to as a "first attachment bolt 46", and the other bolt 47 is referred to as a "second attachment bolt 47".

[0025] The first bus bar 11 (hereinafter simply referred to as "bus bar 11") has a bus bar main body 36 and a bus bar terminal portion 37 for connecting to a bus bar 90 (see FIG. 1) for a first external device. As shown in FIG. 3, the bus bar main body 36 and the bus bar terminal portion 37 are each provided on the box body 12 and do not protrude from the box body 12. As shown in FIG. 1, the bus bar main body 36 is covered by the cover 13, but the bus bar terminal portion 37, together with the sensor 19, is not covered by the cover 13 and is exposed to the outside.

[0026] When cover 13 is attached to box body 12, a region of box body 12 where bus bar main body 36 is provided and where cover 13 covers bus bar main body 36 is a "first region 21." When cover 13 is attached to box body 12, a region of box body 12 where bus bar terminal portion 37 is provided and where bus bar terminal portion 37 is exposed and not covered by cover 13 is a "second region 22."

[0027] The bus bar 11 will be described in more detail. FIG. 4 is an explanatory diagram of the electric junction box 10 shown in FIG. 1 with the cover 13 and the sensor 19 removed. The bus bar 11 has a first member 31 as a bus bar main body 36, and a second member 32 including a bus bar terminal portion 37. The second member 32 is a separate member from the first member 31, and is detachably connected to the first member 31. The first member 31 is attached by a fixing bolt 17 along the first region 21. The second member 32 is a conductor that is long in the front-rear direction (the first direction). The bus bar terminal portion 37 is provided on one end side of the second member 32, a central portion 38 in the longitudinal direction of the second member 32 is a portion to be detected by the sensor 19, and the other end side of the second member 32 is a connection portion 39 with the first member 31.

[0028] 2, a first bolt hole 41 for the first mounting bolt 46 is provided in a part of the first region 21 of the box body 12. A through hole 35 for passing the first mounting bolt 46 is formed in a part of the first member 31. When viewed from above in a state in which the first member 31 is fixed to the first region 21 by the fixing bolt 17, the through hole 35 of the first member 31 is in the same position as the first bolt hole 41.

[0029] A through hole 33 is provided in the connection portion 39 of the second member 32, through which the first mounting bolt 46 passes. The connection portion 39 of the second member 32 is placed on top of the first member 31 provided in the first region 21. The first mounting bolt 46 passes through the through hole 33 of the second member 32 and the through hole 35 of the first member 31, and is fastened to the first bolt hole 41. In other words, the first mounting bolt 46 fastens the connection portions 39 of the first member 31 and the second member 32 together to the box body 12.

[0030] A second bolt hole 42 is provided in the second region 22 of the box body 12. A through hole 34 is formed in the bus bar terminal portion 37 of the second member 32, through which a second mounting bolt 47 passes. The second mounting bolt 47 passes through the through hole 34 of the second member 32 and is fastened to the second bolt hole 42. This causes the bus bar terminal portion 37 of the second member 32 to be attached to the box body 12. When the bus bar terminal portion 37 of the second member 32 is attached to the box body 12 by the second mounting bolt 47, the second mounting bolt 47 also fastens a bus bar 90 for a first external device (see FIG. 1 ).

[0031] The wall portion 16 of the box body 12 will be described. A pair of walls 16a, 16a covering the first member 31 from both the left and right sides is provided in the first region 21 of the first block portion B1 of the box body 12. The left-right distance between the pair of walls 16a, 16a narrows toward the front. The left-right width of the front portion 31a of the first member 31 narrows toward the front side in accordance with the left-right distance between the pair of walls 16a, 16a. The pair of walls 16a, 16a cover the connection portion 39 of the second member 32, which is stacked on the first member 31, from both the left and right sides (see FIG. 4). The second member 32 is provided extending further forward from between the front ends of the pair of walls 16a, 16a.

[0032] [About cover 13] 2 and 3, the cover 13 has a first cover portion 51 that covers the first region 21 of the first block portion B1 of the box body 12, and a second cover portion 52 that covers the second block portion B2 of the box body 12. The first cover portion 51 has a pair of cover side portions 53, 53 that cover the pair of wall portions 16a, 16a from both the left and right sides, and a cover main body portion 54 that connects upper portions of the pair of cover side portions 53, 53. When the cover 13 is attached to the box body 12, the pair of cover side portions 53, 53 cover a part (front portion) of the first member 31 and a part (connection portion 39) of the second member 32 provided between the pair of wall portions 16a, 16a from both the left and right sides.

[0033] Of the pair of cover side portions 53, 53, one (right) cover side portion 53 has a cover extension portion 55 extending forward. The cover extension portion 55 is connected to the cover main body portion 54. There is an opening between the cover extension portion 55 and the other (left) cover side portion 53 of the pair of cover side portions 53. This opening is a first opening portion 56. When the second member 32 is attached to the box main body 12, the second member 32 passes through the first opening portion 56.

[0034] 5 is a plan view of a part (the front part of the first block part B1) of the electric junction box 10. An opening is provided in the cover main body part 54 to allow the connection part 39 of the second member 32 to pass through in order to remove the second member 32 from the box main body 12. This opening is the second opening part 57. As shown in FIGS. 2 and 3, the second opening part 57 is formed on the front side of the cover main body part 54 and is continuous with the first opening part 56.

[0035] The electrical connection box 10 has a plurality of engaging portions and a plurality of engaged portions for attaching the cover 13 to the box body 12. In Fig. 3, the box body 12 has three engaged portions 28a, 28b, 28c. One engaged portion 28a is provided on one of the left and right sides of a first block B1 of the box body 12, and one engaged portion 28b is provided on the other left and right side of the first block B1. The first engaged portion 28a is provided on the rear side of the first block B1. A second block B2 is provided extending leftward from the rear of the first block B1, and one engaged portion 28c is provided on the left side of the second block B2.

[0036] The cover 13 has three engaging portions 27a, 27b, and 27c. When the cover 13 is attached to the box body 12 in the correct position, the three engaging portions 27a, 27b, and 27c engage with the three engaged portions 28a, 28b, and 28c. This allows the cover 13 to be attached to the box body 12. Note that although the number of engaging portions and engaged portions is three in the above description, the number can be changed.

[0037] [Regarding sensor 19] 6 is a perspective view of the sensor 19 as viewed from below. The sensor 19 has a through hole 62 in its housing 61. The second member 32 passes through the through hole 62 (see FIG. 3). The sensor 19 detects a current at the center of the second member 32 that passes through the through hole 62.

[0038] 6, the sensor 19 has a base portion 63 as a part of a housing 61. An upper surface of the base portion 63 forms a part of a through hole 62. With the second member 32 passing through the through hole 62 (see FIG. 3), the second member 32 is attached to the box body 12 by the first attachment bolt 46 and the second attachment bolt 47. As a result, the base portion 63 of the sensor 19 is sandwiched between the second member 32 and the box body 12 in the vertical direction, and the sensor 19 is fixed to the box body 12 together with the second member 32. In other words, the sensor 19 is fixed to the box body 12 integrally with the second member 32.

[0039] 3 and 4, the portion of box body 12 to which sensor 19 is fixed is "sensor mounting portion 25." Sensor mounting portion 25 is included in second region 22 of box body 12 that is not covered by cover 13. In other words, second region 22 that is not covered by cover 13 has sensor mounting portion 25. Therefore, when sensor 19 is attached to sensor mounting portion 25 (see FIG. 1), sensor 19, together with bus bar terminal portion 37 of second member 32, is exposed to the outside without being covered by cover 13.

[0040] As shown in Fig. 6, the sensor 19 has a protrusion 64 that protrudes downward on the lower surface of its housing 61. As shown in Fig. 2, the sensor mounting portion 25 is provided with a recess 26 into which the protrusion 64 can fit. The recess 26 is configured as a hole formed in the box body 12. When the sensor 19 is mounted together with the second member 32 at a specified position of the sensor mounting portion 25, the protrusion 64 fits into the recess 26. In other words, the sensor 19 is positioned and mounted by the protrusion 64 and the recess 26.

[0041] In this embodiment, the sensor 19 has the protrusion 64 and the box body 12 has the recess 26, but conversely, although not shown, the sensor 19 may have a recess and the box body 12 may have a protrusion. That is, in order to position the sensor 19 at a specified position, a recess or protrusion is provided in the sensor attachment portion 25, and the protrusion or recess of the sensor 19 fits into the recess or protrusion. This configuration makes it easy to position and attach the sensor 19 to the second region 22 of the box body 12.

[0042] Furthermore, in this embodiment, the sizes of the convex portion 64 and the concave portion 26 are set so that the convex portion 64 and the concave portion 26 fit closely together. For example, the convex portion 64 has a cylindrical shape, the concave portion 26 is a hole shaped along the cylinder, and the outer diameter of the convex portion 64 is set to be slightly larger than the inner diameter of the concave portion 26. Note that, in order to facilitate the insertion of the convex portion 64 into the concave portion 26, it is preferable that a tapered surface is formed at the tip of the convex portion 64 or the opening end of the concave portion 26. By fitting the convex portion 64 and the concave portion 26 closely together, the sensor 19 is fixed at a specified position in the second region 22, making it possible to suppress rattling.

[0043] 4, a connection structure between the first member 31 and the second member 32 constituting the busbar 11 will be described. With the second member 32 overlapping the first member 31, the first member 31 and the second member 32 are fixed to the box body 12 by the first mounting bolt 46. In other words, the direction in which the second member 32 overlaps the first member 31 is the up-down direction, and the second member 32 is fixed to the first member 31 by tightening the first mounting bolt 46 in the up-down direction.

[0044] The protrusion 64 of the sensor 19 protrudes in a direction parallel to the vertical direction (downward in the vertical direction), and the recess 26 of the sensor attachment portion 25 is recessed in a direction parallel to the vertical direction (downward in the vertical direction). Therefore, when the first attachment bolt 46 and the second attachment bolt 47 are tightened in order to attach the second member 32, which is integrated with the sensor 19, to the first member 31 with the protrusion 64 and the recess 26 aligned, the protrusion 64 can be gradually fitted into the recess 26. This facilitates the work of attaching the sensor 19 to the second region 22 of the box body 12.

[0045] [Regarding the Electrical Junction Box 10 of the Present Embodiment] As described above, the electrical junction box 10 of the present embodiment includes the bus bar 11, the box body 12 in which the bus bar 11 is provided, and the cover 13 that covers the box body 12. The bus bar 11 has the bus bar main body portion 36 and the bus bar terminal portion 37 for connecting to the bus bar 90 (see FIG. 1 ) for a first external device. The box body 12 has a first region 21 and a second region 22. The first region 21 is a region in which the bus bar main body portion 36 is provided and is covered by the cover 13. The second region 22 is a region in which the bus bar terminal portion 37 is provided and is not covered by the cover 13, exposing the bus bar terminal portion 37.

[0046] According to the electrical junction box 10 of this embodiment having the above-mentioned configuration, the bus bar main body 36 in the first area 21 is covered by the cover 13, whereas the bus bar terminal portion 37 in the second area 22 is exposed and not covered by the cover 13. Therefore, the work of connecting the bus bar 90 for the first external device to the bus bar terminal portion 37 can be performed without removing the cover 13. In other words, the work of connecting the bus bar 90 for the first external device to the bus bar 11 of the electrical junction box 10 is facilitated. As a result, For example, even when work is performed on an automobile production line to connect a bus bar 90 for a first external device to each bus bar terminal portion 37 of a large number of electrical connection boxes 10, it is possible to increase the efficiency of that work.

[0047] The second region 22 of the box body 12 has a sensor attachment portion 25 for attaching a sensor 19 that measures a current flowing through the bus bar 11. The sensor 19 attached to the sensor attachment portion 25 is exposed together with the bus bar terminal portion 37 and is not covered by the cover 13. This makes it possible to remove and attach the sensor 19 without removing the cover 13. In addition, since the connector portion 19a of the sensor 19 for connecting a cable is exposed, it is possible to connect a cable to the sensor 19 without removing the cover 13.

[0048] The bus bar 11 has a first member 31 as the bus bar main body 36 attached to the first region 21, and a second member 32 including a bus bar terminal portion 37. The second member 32 is detachably connected to the first member 31. The sensor 19 is integrated with the second member 32, and a part of the second member 32 is a detection target for current. Therefore, if the second member 32 is removed from the first member 31, the sensor 19 can be removed from the box main body 12 together with the second member 32. In addition, the sensor 19 can be attached to the box main body 12 together with the second member 32. As a result, maintenance such as replacement of the sensor 19 is also facilitated.

[0049] The second member 32 constituting the bus bar 11 is a conductor that is long in the front-rear direction, with a bus bar terminal portion 37 provided on the front end side of the conductor and a connection portion 39 with the first member 31 on the rear end side of the conductor. The cover 13 has a pair of cover side portions 53, 53 that cover the entire first member 31 and the connection portion 39 of the second member 32 from both left and right sides, and a cover main body portion 54 that connects these cover side portions 53, 53. An opening (second opening 57) is provided in the cover main body portion 54, and the connection portion 39 of the second member 32 can pass through the second opening 57.

[0050] Therefore, the second member 32 connected to the first member 31 can be removed from the opening (second opening 57) of the cover main body 54. Therefore, even if the sensor 19 is integrated with the second member 32, by removing the second member 32 from the first member 31, the sensor 19 can be easily removed from the box main body 12.

[0051] In this way, other than the configuration in which the opening (second opening 57) is provided in the cover main body 54, the entire portion of the cover 13 near the second member 32 may be omitted. In other words, the front portions of the cover side portions 53, 53 and the front portion of the cover main body 54 may be omitted from the cover 13. However, in this case, the connecting portion between the first member 31 and the second member 32 is also exposed in the left-right direction, and there is a possibility that an operator may touch it with his / her fingers. In contrast, by providing the opening (second opening 57) in the cover main body 54 as in this embodiment, it becomes difficult for an operator to touch the connecting portion between the first member 31 and the second member 32 with his / her fingers.

[0052] The above-described embodiment is illustrative in all respects and is not restrictive. The scope of the present invention is indicated by the claims rather than the above-described embodiment, and includes all modifications within the scope equivalent to the configurations described in the claims. [Explanation of symbols]

[0053] 10 Electrical junction box 11 Bus bar 12 Box body 13 Cover 14 First Case 15 Second Case 16 Wall 16a Wall 17 Fixing bolt 18 Second bus bar 19 Sensors 19a Connector part 21 First area 22 Second area 25 Sensor mounting part 26 Recess 27a, 27b, 27c Engagement part 28a, 28b, 28c Engaged part 31 First member 32 Second member 33 Through hole 34 Through hole 35 Through hole 36 Busbar body 37 Busbar terminal 38 Central part 39 Connection 41 First bolt hole 42 Second bolt hole 46 First mounting bolt 47 Second mounting bolt 51 First cover part 52 Second cover part 53 Cover side 54 Cover body 55 Cover extension 56 First opening 57 Second opening 61 Case 62 Through hole 63 Base 64 Convex 90 Bus Bar 91 Wire harness B1 First Block B2 Second Block

Claims

1. a bus bar having a bus bar main body and a bus bar terminal portion for connecting to an external device, a box main body in which the bus bar is provided, and a cover for covering the box main body, the box body has a first region in which the bus bar main body is provided and the bus bar main body is covered by the cover, and a second region in which the bus bar terminal portion is provided and is not covered by the cover, exposing the bus bar terminal portion, the second region has a sensor attachment portion for attaching a sensor that measures a current flowing through the bus bar, the bus bar includes a first member as the bus bar main body attached to the first region, and a second member including the bus bar terminal portion and detachably connected to the first member, the sensor is exposed together with the bus bar terminal portion without being covered by the cover, is integrated with the second member, and detects a current through the second member; the second member is a conductor that is long in a first direction, the bus bar terminal portion is provided on one end side of the conductor, a central portion of the conductor is a portion to be detected by the sensor, and the other end side of the conductor is a connection portion with the first member, The cover includes a pair of cover side portions that cover the first member and the connection portion from both sides, and a cover main body portion that connects the pair of cover side portions, and an opening that allows the connection portion to pass through is provided in the cover main body portion. Electrical junction box.

2. 2. The electrical junction box according to claim 1, wherein the sensor mounting portion is provided with a recess or protrusion into which a protrusion or recess of the sensor is fitted to position the sensor at a specified position.

3. 3. The electrical junction box according to claim 2, wherein said projection and said recess are fitted in close contact with each other.

4. The second member is fixed to the first member by a bolt that is tightened in a direction in which the second member overlaps the first member, 4. The electrical junction box according to claim 2, wherein the convex portion protrudes in a direction parallel to the overlapping direction, and the concave portion is recessed in a direction parallel to the overlapping direction.

5. A device comprising: a bus bar having a bus bar main body and a bus bar terminal portion for connecting to an external device; a box main body in which the bus bar is provided; and a cover for covering the box main body, the box body has a first region in which the bus bar main body is provided and the bus bar main body is covered by the cover, and a second region in which the bus bar terminal portion is provided and is not covered by the cover, exposing the bus bar terminal portion, the second region has a sensor attachment portion for attaching a sensor that measures a current flowing through the bus bar, the sensor is exposed together with the bus bar terminal portion without being covered by the cover, The sensor mounting portion is provided with a recess or a protrusion into which a protrusion or a recess of the sensor is fitted in order to position the sensor at a specified position, a second member including the bus bar terminal portion and detachably connected to the first member as the bus bar main body attached to the first region is fixed by a bolt tightened in a direction in which the second member overlaps the first member, The convex portion protrudes in a direction parallel to the overlapping direction, and the concave portion is recessed in a direction parallel to the overlapping direction.

6. The bus bar has a first member as the bus bar main body attached to the first region, and a second member including the bus bar terminal portion and detachably connected to the first member, The electrical junction box according to claim 5 , wherein the sensor is integral with the second member and detects a current through the second member.

7. An electrical connection box as described in claim 5, wherein the convex portion and the concave portion fit tightly together.

Images