Electrical junction box

Abstract

To provide an electrical junction box that can stabilize the posture of an electric wire that is passed between a frame and an upper cover along the outer surface of the outer wall of a frame, and to inhibit water from entering through a routing path of this electric wire.SOLUTION: An electrical junction box 1 includes a frame 2 on which a plurality of components are mounted, an upper cover 3 mounted on an upper surface 2a of the frame 2, and a group of wires 5 that are passed along the outer surface of an outer wall 20 of the frame 2 and between the frame 2 and the upper cover 3, ends of which are fixed to the upper surface 2a of the frame 2. The outer wall 20 of the frame 2 has a wire posture control wall 7 extending in the vertical direction and along the group of wires 5. The wire posture control wall 7 extends from a lower end 20b side of the outer wall 20 to above an upper end 20a of the outer wall 20.SELECTED DRAWING: Figure 2

Description

【Technical Field】 【0001】 The present invention relates to an electrical connection box mounted on an automobile. 【Background Art】 【0002】 An electrical connection box that is mounted on an automobile and distributes power from a power source side to a load side is known (see, for example, Patent Document 1). There are various structures for this electrical connection box, and as an example, there is one having the structure shown in FIG. 5. 【0003】 The electrical connection box 501 shown in FIG. 5 includes a frame 502 on which relays, fuses, etc. are mounted, an upper cover attached to the upper surface 502a of the frame 502, a lower cover attached to the lower surface 502b of the frame 502, and a wire group 505. 【0004】 The wire group 505 is retrofitted at an automobile assembly plant, is arranged along the wiring surface 520k of the outer wall 520 of the frame 502, passes between the frame 502 and the upper cover, and its terminals are fixed to the upper surface 502a of the frame 502. Further, a wire posture control wall 507 for controlling the posture of the wire group 505 is formed on the outer wall 520 of the frame 502. 【Prior Art Documents】 【Patent Documents】 【0005】 【Patent Document 1】 Japanese Unexamined Patent Application Publication No. 2018 - 107953 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0006】 In the above-mentioned electrical junction box 501, the wire attitude control wall 507 was short, resulting in the problem that the attitude of the wire group 505 was unstable, as shown in Figure 5. Furthermore, the upper end of the wiring surface 520k was spaced apart from the upper cover without overlapping in order to allow the wire group 505 to pass through. As a result, as indicated by the arrow in Figure 6, there was a problem that water could easily enter the inside of the electrical junction box 501 via the wiring surface 520k. 【0007】 Therefore, the present invention aims to provide an electrical connection box that can stabilize the position of electric wires that are routed along the outer surface of the outer wall of the frame and passed between the frame and the upper cover, and that can suppress the intrusion of water from the wiring path of these electric wires. [Means for solving the problem] 【0008】 The present invention comprises a frame, an upper cover attached to the upper surface of the frame, and an electric wire that runs along the outer surface of the outer wall of the frame, passes between the frame and the upper cover, and whose end is fixed to the upper surface of the frame. The multiple outer surfaces of the outer wall of the frame, and the wire attitude control wall which is perpendicular to one of these multiple outer surfaces and extends from the lower end of that outer surface to above the upper end of that outer surface and along the wire, constitute the wire routing path. This is an electrical junction box characterized by the following features. [Effects of the Invention] 【0009】 According to the present invention, the attitude of the electric wire can be stabilized by the electric wire attitude control wall, and the intrusion of water from the electric wire routing path into the electrical junction box can be suppressed. [Brief explanation of the drawing] 【0010】 [Figure 1] This is a perspective view of an electrical junction box according to one embodiment of the present invention. [Figure 2] Figure 1 is a perspective view showing the electrical junction box with its upper cover removed. [Figure 3] This is a cross-sectional view along line AA in Figure 1. [Figure 4] This is a cross-sectional view along line BB in Figure 1. [Figure 5] This is a perspective view of a conventional electrical junction box. [Figure 6] Figure 5 is a diagram illustrating the water intrusion path in the electrical junction box. [Modes for carrying out the invention] 【0011】 An "electrical junction box" according to one embodiment of the present invention will be explained with reference to Figures 1 to 4. 【0012】 The electrical junction box 1 shown in Figures 1 and 2 is mounted on an automobile and distributes power from the power source to the load. This electrical junction box 1 comprises a frame 2 on which multiple components are attached, an upper cover 3 attached to the upper surface 2a of the frame 2, a lower cover 4 attached to the lower surface 2b of the frame 2, and groups of wires 5, 15a, 15b, and 15c. 【0013】 Frame 2 is made of insulating synthetic resin. Frame 2 comprises a cylindrical outer wall 20 with openings on the upper surface 2a and the lower surface 2b, and three partial cylindrical bodies 28a, 28b, and 28c connected to the lower end 20b of the outer wall 20. Hereinafter, the partial cylindrical bodies 28a, 28b, and 28c will be referred to as the first partial cylindrical bodies 28a, 28b, and 28c. The first partial cylindrical bodies 28a, 28b, and 28c are assembled with the second partial cylindrical bodies 48a, 48b, and 48c of the lower cover 4 to form cylindrical wire insertion openings 8a, 8b, and 8c, respectively. 【0014】 Multiple electronic components such as relays, fuses, and power integrations are mounted on the upper surface 2a of frame 2. Busbars, wires, connectors, etc. are mounted on the lower surface 2b of frame 2 and connected to the aforementioned electronic components. The multiple wires mounted on the lower surface 2b of frame 2 are bundled together to form wire groups 15a, 15b, and 15c, and are led out of the electrical connection box 1 through wire insertion openings 8a, 8b, and 8c. 【0015】 Unlike the wire groups 15a, 15b, and 15c described above, the wire group 5 is retrofitted at an automobile assembly plant. Therefore, instead of being mounted on the lower surface 2b side of the frame 2, the wire group 5 is arranged along the outer surface of the outer wall 20 of the frame 2 and passed between the frame 2 and the upper cover 3, and its terminals are fixed to the upper surface 2a of the frame 2. Specifically, a connector 6 is attached to the terminal of the wire group 5, and this connector 6 is connected to a mating connector arranged on the upper surface 2a side of the frame 2. Note that the connector 6 is connected to the mating connector with the upper cover 3 removed from the frame 2, and the upper cover 3 is attached to the upper surface 2a of the frame 2 after the connection. 【0016】 The upper cover 3 is made of an insulating synthetic resin. The upper cover 3 includes a main body portion 30 formed in a shallow box shape, an extension portion 31 extending from the lower end of the main body portion 30 to cover the routing path of the wire group 5, an inner wall 32 curved along the wire group 5 inside the extension portion 31, and inner walls 33, 34 along the frame 2 (see FIG. 3). 【0017】 The lower cover 4 is made of an insulating synthetic resin and is formed in a shallow box shape. At the upper end of the lower cover 4, the three second partial cylindrical bodies 48a, 48b, and 48c described above are formed. 【0018】 Subsequently, the configuration of the routing path of the wire group 5 described above will be described in detail with reference to FIGS. 2 to 4. In FIG. 4, the illustration of the wire group 5 is omitted. 【0019】 The outer wall 20 of the frame 2 includes an outer surface 20g, an outer surface 20c connected perpendicularly to the outer surface 20g, and an outer surface 20f connected perpendicularly to the outer surface 20c. When viewed from the outside of the frame 2, the outer surface 20g and the outer surface 20c form a corner, and the outer surface 20c and the outer surface 20f form a corner. A wire posture control wall 7 extending in the vertical direction is connected perpendicularly to the outer surface 20f. 【0020】 The wire posture control wall 7 faces the outer surface 20c. Hereinafter, the outer surface 20c will be referred to as the facing surface 20c. Below the wire posture control wall 7, a first partial cylindrical body 28a is arranged, and the wire posture control wall 7 is continuous with the first partial cylindrical body 28a. Further, the wire posture control wall 7 extends above the upper end (the upper end of the outer surface 20f) 20a of the outer wall 20. 【0021】 The above-mentioned outer surface 20f is a flat surface, but below this outer surface 20f, a curved surface 20d that smoothly connects the facing surface 20c and the wire posture control wall 7 is formed. These facing surface 20c, outer surface 20f, curved surface 20d, and wire posture control wall 7 constitute the wiring path of the wire group 5. 【0022】 In the state where the upper cover 3 is attached to the frame 2, as shown in FIG. 3, the inner wall 32 positions the wire group 5 between the facing surface 20c, the curved surface 20d, and the wire posture control wall 7. These inner wall 32, facing surface 20c, curved surface 20d, and wire posture control wall 7 constitute a wiring path approximated to the outer peripheral shape of the wire group 5 having a circular cross-sectional shape and follow the wire group 5. 【0023】 Also, as shown in FIGS. 3 and 4, the inner wall 33 of the upper cover 3 follows the surface on the opposite side of the facing surface 20c of the wire posture control wall 7. The inner wall 34 of the upper cover 3 follows the outer surface 20e that is continuous perpendicularly to the wire posture control wall 7 on the opposite side of the facing surface 20c. 【0024】 The electrical connection box 1 having the above structure can stabilize the posture of the wire group 5 by the long wire posture control wall 7 that extends from the lower end 20b side of the outer wall 20 above the upper end 20a of the outer wall 20. Further, by this wire posture control wall 7, as shown by the arrow in FIG. 4, the intrusion of water from the wiring path of the wire group 5 into the inside of the electrical connection box 1 can be suppressed. Also, since the inner wall 32, facing surface 20c, curved surface 20d, and wire posture control wall 7 of the upper cover 3 constitute a wiring path approximated to the outer peripheral shape of the wire group 5 and follow the wire group 5, the intrusion of water from the wiring path of the wire group 5 can be further suppressed. Furthermore, since this wire posture control wall 7 is continuous with the first partial cylindrical body 28a, the first partial cylindrical body 28a can be reinforced simultaneously. 【0025】 The embodiments described above merely represent typical forms of the present invention, and the present invention is not limited to these embodiments. That is, it can be implemented with various modifications without departing from the core principles of the present invention. As long as such modifications still possess the configuration of the present invention, they are of course included within the scope of the present invention. [Explanation of Symbols] 【0026】 1. Electrical junction box 2 frames 3 Upper cover 4 Lower Cover 5 wire group 7. Wire attitude control wall 20 Exterior Wall

Claims

[Claim 1] Frame and, An upper cover attached to the upper surface of the frame, The system includes an electric wire that runs along the outer surface of the outer wall of the frame, passes between the frame and the upper cover, and whose end is fixed to the upper surface of the frame, The multiple outer surfaces of the outer wall of the frame, and the wire attitude control wall which is perpendicular to one of these multiple outer surfaces and extends from the lower end of that outer surface to above the upper end of that outer surface and along the wire, constitute the wire routing path. An electrical junction box characterized by the following features. [Claim 2] The frame is equipped with a lower cover that is attached to the lower surface of the frame, A first partial cylindrical body is formed at the lower end of the outer wall of the frame. A second partial cylindrical body is formed at the upper end of the lower cover. The first partial cylindrical body and the second partial cylindrical body are assembled to form a cylindrical wire insertion opening. The wire attitude control wall is connected to the first partial cylindrical body. The electrical junction box according to feature 1. [Claim 3] The plurality of outer surfaces constituting the cable routing path include a facing surface that faces the wire attitude control wall and a curved surface that smoothly connects the facing surface and the wire attitude control wall, The wire attitude control wall, the opposing surface, and the curved surface are aligned with the wire. An electrical junction box according to feature 1 or 2.

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