Electrical junction box

Abstract

To provide a cost-effective electrical connection box provided with a battery connection bolt from which a clip is difficult to be detached.SOLUTION: A resin cap 9 is attached to a tip of an axial part 61 of a battery connection bolt 6. A nut 7 and the cap 9 are arranged apart from each other, and the axial part 61 of the battery connection bolt 6 between the nut 7 and the cap 9 is exposed. A clip 11 is connected to the exposed axial part 61.SELECTED DRAWING: Figure 4

Description

Technical Field

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

Background Art

[0002] When an automobile battery enters an over-discharged state, it may be necessary to start the engine by receiving power supply from the battery of another automobile (hereinafter, an ambulance). In this case, the battery of the faulty vehicle and the battery of the ambulance are connected with a booster cable.

[0003] In addition, an electrical connection box has been proposed as an ambulance terminal connected to a clip attached to the tip of a booster cable, in which a battery connection bolt to which a power supply line from a battery is connected is used as the ambulance terminal (Patent Document 1). In Patent Document 1, since a clip is connected to a tapered battery connection bolt, there is a problem that the clip is likely to come off.

[0004] In addition, in order to make the clip difficult to come off, an electrical connection box has been proposed in which a nut provided with a large-diameter portion at the tip is screwed onto a battery connection bolt, and the clip can be connected below the large-diameter portion of the nut (Patent Document 2). In Patent Document 2, it is necessary to make the nut have a special configuration, which is a problem in terms of cost.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] To achieve the aforementioned objectives, the electrical junction box according to the present invention is characterized by the following: The battery terminal attached to the end of the power supply line from the battery, A battery connection bolt having a shaft portion that passes through the bolt hole of the battery terminal, The battery connection bolt comprises a nut that is screwed onto the shaft portion of the battery connection bolt. In an electrical junction box, The battery connection bolt is further equipped with a resin cap attached to the tip of the shaft portion, The nut and the cap are spaced apart, and the shaft portion of the battery connection bolt is exposed between the nut and the cap. It must be an electrical junction box. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an inexpensive electrical connection box equipped with battery connection bolts that are less likely to come off with clips.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by referring to the attached drawings and reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments"). [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view of the electrical junction box of the present invention before the clips are connected. [Figure 2] Figure 2 is a perspective view of the electrical junction box shown in Figure 1 after the clips have been connected. [Figure 3]Figure 3 is a perspective view showing the electrical junction box shown in Figure 1 with the case removed. [Figure 4] Figure 4 is a partial cross-sectional view taken along line AA in Figure 2. [Figure 5] Figure 5 is a partial cross-sectional view of the line BB in Figure 2. [Figure 6] Figure 6 is a top view of the caps that make up the electrical junction box shown in Figure 1. [Modes for carrying out the invention]

[0011] Specific embodiments of the present invention will be described below with reference to the figures. The electrical junction box is equipped with electronic components such as fuses and relays and is located in the engine compartment of the vehicle.

[0012] For the sake of clarity, the terms "front," "back," "left," "right," "up," and "down" are defined as shown in Figures 1 to 6. The "front-back direction," "left-right direction," and "up-down direction" intersect with each other.

[0013] As shown in Figures 1 to 3, the electrical connection box 1 comprises a battery terminal 2 (see Figure 3), an electronic component 3, a busbar 4 (see Figure 3), a resin holder 5, a battery connection bolt 6, a nut 7, a case 8 (see Figures 1 and 2), and a cap 9 (see Figures 1 and 3).

[0014] As shown in Figure 3, the battery terminal 2 is made up of a plate-shaped LA terminal that is attached to the end of the power supply line 10 from the battery and bolted to the busbar 4. The battery terminal 2 is made by punching out and bending a metal plate. The battery terminal 2 is provided with a busbar connection part 21 that is connected to the busbar 4 and a wire connection part 22 that is connected to the power supply line 10. The busbar connection part 21 is provided in a flat plate shape and is arranged to overlap the upper and lower sides of the busbar 4. As shown in Figure 4, the busbar connection part 21 is provided with a bolt through hole 211 that penetrates in the vertical direction for the shaft portion 61 of the battery connection bolt 6 to pass through.

[0015] As shown in FIG. 3, the wire connection part 22 is provided so as to hang down from the right end of the bus bar connection part 21 to the lower side, and includes a bottom plate part 221 perpendicular to the left-right direction, and core wire caulking pieces 222 erected from both front and rear ends of the bottom plate part 221 for caulking the core wires of the power supply wire 10, and a coating caulking piece 223 for caulking the coating part of the power supply wire 10.

[0016] The electronic component 3 is composed of a fuse, a relay, etc., and is connected to a bus bar 4 described later.

[0017] The bus bar 4 is formed by punching and bending a metal plate, and is provided with a terminal part (not shown) for connecting to the electronic component 3 and a terminal connection part 41 for connecting to the battery terminal 2. As shown in FIG. 4, the terminal connection part 41 is provided with a bolt through hole 411 penetrating in the vertical direction through which the shaft part 61 of the battery connection bolt 6 passes.

[0018] As shown in FIG. 3, the resin holder 5 is made of synthetic resin and holds the above-described electronic component 3, bus bar 4, and battery connection bolt 6. In the present embodiment, the resin holder 5 is integrally formed of resin with a component holding part 51 for holding the electronic component 3 and a terminal block 52 in which the terminal connection part 41 of the bus bar 4 and the battery connection bolt 6 are held. The terminal connection part 41 of the flat bus bar 4 is disposed on the upper surface of the terminal block 52 so as to be perpendicular to the vertical direction. In the present embodiment, two terminal connection parts 41 are disposed overlapping on the upper surface of the terminal block 52.

[0019] As shown in FIG. 4, the battery connection bolt 6 has a shaft part 61 provided with a screw groove (omitted in FIG. 4) into which a nut � is screwed, and a flange part 62 provided at the lower end of the shaft part 61. The flange part 62 is fixed to a bolt fixing part 53 fixed to the terminal block 52. The shaft part 61 is provided so as to project upward from the bolt fixing part 5; As shown in FIG. 5, the shaft part 61 is provided with a small diameter part 611 provided at the tip and a large diameter part 612 having a larger diameter than the small diameter part 611, and a screw groove 63 is provided in the large diameter part 612.

[0020] As shown in Figure 4, the nut 7 is screwed onto the shaft portion 61 of the battery connection bolt 6 after passing the two busbars 4 and the battery terminals 2 through it from bottom to top, thereby fastening the busbars 4 and battery terminals 2 with the bolt.

[0021] As shown in Figure 1, the case 8 comprises a cylindrical case body 81 that houses the resin holder 5, a lower cover (not shown) that closes the lower opening of the case body 81, an upper cover (not shown) that closes the upper opening of the case body 81, and a side cover 82 that closes the right-side opening of the case body 81.

[0022] As shown in Figure 1, the cap 9 is made of synthetic resin and is attached to the tip of the shaft 61 of the battery connection bolt 6. The nut 7 and the cap 9 are spaced apart in the vertical direction, and the shaft 61 of the battery connection bolt 6 between the nut 7 and the cap 9 is exposed from both the nut 7 and the cap 9.

[0023] As shown in Figures 4 to 6, the cap 9 has a rectangular cylindrical small section 91 that is elongated in the front-to-back direction, an upper wall section 92 that covers the upper opening of the small section 91, a hexagonal cylindrical large section 93, a connecting wall 94 that connects the lower end of the small section 91 and the upper end of the large section 93, and a pair of locking sections 95, 95 (see Figures 5 and 6). The upper wall section 92 covers the tip surface of the battery connection bolt 6, is elongated in the left-to-right direction, and both ends in the left-to-right direction are connected to the upper end of the small section 91. Openings 96, 96 (see Figures 5 and 6) are provided on both sides of the upper wall section 92 in the front-to-back direction.

[0024] As shown in Figure 5, the pair of locking parts 95, 95 are positioned between each other with the shaft 61 and fitted into the screw groove 63 of the shaft 61. The pair of locking parts 95, 95 have a locking arm 951 that extends vertically and whose upper side is bent and connected to the inner wall of the small cylindrical part 91, and a locking claw 952 provided at the lower end of the locking arm 951 and projecting toward the shaft 61. The portion of the locking arm 951 that extends vertically is curved along the outer surface of the shaft 61, as shown in Figure 6. The locking claw 952 provided at the tip of this curved locking arm 951 is also curved along the outer surface of the shaft 61. As shown in Figure 5, this locking claw 952 is fitted into the screw groove 63 of the shaft 61.

[0025] Furthermore, as shown in Figures 1 and 4, the case body 81 is provided with a vertical wall portion 811 that covers the left side of the shaft portion 61 of the battery connection bolt 6, which is exposed between the cap 9 and the nut 7. The shaft portion 61 and the vertical wall portion 811 are arranged side by side in the left-right direction. The vertical wall portion 811 is provided perpendicular to the left-right direction. The upper end of this vertical wall portion 811 is provided with a projection portion 812 that protrudes toward the side away from the shaft portion 61. In this embodiment, a pair of projection portions 812 are provided side by side in the front-rear direction.

[0026] Next, the connection of the clip 11 to the electrical junction box 1 described above will be explained. As shown in Figures 1 and 4, the clip 11 has a pair of clamping parts 111, 111 that hold objects between them, and the lower ends of the pair of clamping parts 111, 111 are biased toward each other by a spring or the like (not shown).

[0027] First, remove the upper cover (not shown) of the electrical connection box 1. Once the upper cover is removed, the cap 9 can be seen from above, as shown in Figure 1. Then, as shown in Figure 4, the clip 11 and the battery connection bolt 6 are connected by sandwiching the shaft portion 61 and vertical wall portion 811 of the battery connection bolt 6 between the lower ends of the pair of clamping portions 111, 111 from the left and right.

[0028] At this time, the right-side clamping portion 111 is positioned to contact the shaft portion 61 exposed between the cap 9 and the nut 7, while the left-side clamping portion 111 is positioned to contact the vertical wall portion 811 below the projection portion 812. With this configuration, even if an upward pulling force is applied to the clip 11, it will catch on the cap 9 and the projection portion 812, making it difficult for the clip 11 to come off the battery connection bolt 6.

[0029] According to the embodiment described above, a resin cap 9 is attached to the tip of the shaft 61 of the battery connection bolt 6, the nut 7 and the cap 9 are spaced apart, and the shaft 61 of the battery connection bolt 6 is exposed between the nut 7 and the cap 9. This allows the clip 11 connected to the end of the booster cable to clamp the shaft 61 of the battery connection bolt 6 that is exposed between the nut 7 and the cap 9 and connect them.

[0030] Furthermore, the clip 11 catches on the cap 9, making it difficult for the clip 11 to come off the shaft 61 of the battery connection bolt 6. Also, since standard battery connection bolts 6 and nuts 7 can be used, the clip 11 can be made less likely to come off at a low cost. In addition, since the cap 9 is not removed, it is less likely to be lost. Furthermore, there is no need to provide a rescue terminal for connecting to the clip 11 separately from the battery connection bolt 6, thus saving space.

[0031] According to the embodiment described above, the cap 9 has a pair of locking parts 95, 95 that position the shaft portion 61 between them and fit into the screw groove 63 of the shaft portion 61. These locking parts 95, 95 make it difficult for the cap 9 to come off the battery connection bolt 6, and further make it difficult for the clip 11 to come off.

[0032] According to the embodiment described above, the vertical wall portion 811 covers the side surface of the shaft portion 61 of the battery connection bolt 6, and the projection portion 812 protrudes from the vertical wall portion 811 toward the side away from the shaft portion 61. As a result, the pair of clamping portions 111, 111 that constitute the clip 11 can clamp the shaft portion 61 of the battery connection bolt 6 and the vertical wall portion 811. Compared to the case where only the shaft portion 61 is clamped, the lower ends of the pair of clamping portions 111, 111 are separated, so the biasing force by the spring in the direction that the lower ends of the pair of clamping portions 111, 111 move toward each other increases, and the electrical connection between the clip 11 and the battery connection bolt 6 can be improved.

[0033] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate. In addition, the material, shape, dimensions, number, placement, etc. of each component in the embodiments described above are arbitrary and not limited, as long as they can achieve the present invention.

[0034] According to the embodiment described above, a vertical wall portion 811 was provided, and the shaft portion 61 of the battery connection bolt 6 and the vertical wall portion 811 were clamped by the clip 11, but this is not the only configuration. Providing the vertical wall portion 811 is not essential, and the connection may be made by clamping only the shaft portion 61 of the battery connection bolt 6 with the clip 11.

[0035] According to the embodiment described above, the cap 9 was provided with a pair of locking parts 95, 95, but it is not limited to this. Providing a pair of locking parts 95, 95 on the cap 9 is not essential; the pair of locking parts 95, 95 may be omitted as long as the cap 9 is designed to prevent it from coming off.

[0036] Herein, the features of the embodiments of the electrical junction box according to the present invention described above are briefly summarized and listed below in [1] to [3]. [1] The battery terminal (2) attached to the end of the power supply line (10) from the battery, A battery connection bolt (6) having a shaft portion (61) that passes through a bolt hole (211) of the battery terminal (2), The battery connection bolt (6) is equipped with a nut (7) that is screwed onto the shaft portion (61) of the battery connection bolt (6). In the electrical junction box (1), The battery connection bolt (6) is further equipped with a resin cap (9) attached to the tip of the shaft portion (61), The nut (7) and the cap (9) are spaced apart, and the shaft portion (61) of the battery connection bolt (6) between the nut (7) and the cap (9) is exposed. Electrical junction box (1).

[0037] According to the configuration described in [1] above, the clip (11) attached to the end of the booster cable can be used to clamp the shaft (61) of the battery connection bolt (6), which is exposed between the nut (7) and the cap (9), thereby enabling connection. In addition, the clip (11) catches on the cap (9), making it difficult for it to come off the shaft (61) of the battery connection bolt (6). Furthermore, since standard battery connection bolts (6) and nuts (7) can be used, the clip (11) can be made less likely to come off at a low cost. Also, since the cap (9) is not removed, it is less likely to be lost.

[0038] [2] In the electrical junction box (1) described in [1], The cap (9) has a locking portion (95) that fits into the screw groove (63) of the shaft portion (61). Electrical junction box (1).

[0039] According to the configuration described in [2] above, the locking part (95) makes it more difficult for the cap (9) to come off the battery connection bolt (6), and further prevents the clip (11) from coming off.

[0040] [3] In the electrical junction box (1) described in [1] or [2], The vertical wall portion (811) covers the side surface of the shaft portion (61) of the battery connection bolt (6), The system includes a projection (812) that is provided on the vertical wall portion (811) toward the side away from the shaft portion (61). Electrical junction box (1).

[0041] According to the configuration described in [3] above, the pair of clamping parts (111, 111) that make up the clip (11) can clamp the shaft (61) and the vertical wall (811) of the battery connection bolt (6). Compared to the case where only the shaft (61) is clamped, the pair of clamping parts (111, 111) are separated, so the spring biasing force in the direction that the pair of clamping parts (111, 111) move closer to each other increases, and the clip (11) and the battery connection bolt (6) can be connected more reliably. [Explanation of Symbols]

[0042] 1. Electrical junction box 2 Battery terminals 6. Battery connection bolts 7 nuts 9 caps 10 Power line 61 Shaft 63 Screw grooves 95 Lock section 211 Bolt holes 811 Vertical wall section 812 Protrusion

Claims

1. The battery terminal attached to the end of the power supply line from the battery, A battery connection bolt having a shaft portion that passes through the bolt hole of the battery terminal, The battery connection bolt comprises a nut that is screwed onto the shaft portion of the battery connection bolt. In an electrical junction box, The battery connection bolt is further equipped with a resin cap attached to the tip of the shaft portion, The nut and the cap are spaced apart, and the shaft portion of the battery connection bolt is exposed between the nut and the cap. Electrical junction box.

2. In the electrical junction box according to claim 1, The cap has a locking portion that fits into the screw groove of the shaft. Electrical junction box.

3. In the electrical junction box according to claim 1 or 2, A vertical wall portion covering the side surface of the shaft portion of the battery connection bolt, It comprises a projection that protrudes from the vertical wall portion toward the side away from the shaft portion. Electrical junction box.

Images