Electric connection box

Abstract

To provide an electric connection box which can easily suppress infiltration of water from an outlet.SOLUTION: An electric connection box body comprises a cylindrical outlet 24 in which an electronic component is housed, and which pulls out a wire harness 5 connected with the electronic component. A plurality of spatula parts 3 have flexibility and are separately provided from the outlet 24. The plurality of spatula parts 3 are provided between an outer wall or inner wall of the outlet 24 and a part pulled out from the outlet 24 of the wire harness 5 and arranged around the axis of the wire harness 5. A tape 4 is would around the outside of the plurality of spatula parts 3.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] Conventionally, there has been known an electrical junction box (also called a junction box, fuse box, relay box, etc.) that is mounted on a vehicle such as an automobile and that houses electronic components such as wire harnesses, fuses, relays, etc. Such an electrical junction box has an outlet through which a wire harness electrically connected to the electronic components housed in the electrical junction box is drawn out to the outside (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-184859 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-7909 Summary of the Invention [Problem to be solved by the invention]

[0004] To prevent water from entering the electrical junction box through the outlet, adhesive tape is wrapped around the area between the outlet and the portion of the wire harness that is pulled out from the outlet. However, there is a difference in diameter between the outlet and the wire harness. This creates a step between the outlet and the wire harness, causing the adhesive tape to wrinkle at this step. This wrinkle creates a gap, which can allow water to enter the electrical junction box through the gap in the adhesive tape.

[0005] Therefore, in the past, a tape-like foam rubber such as Eptsealer was wrapped around the surface, and then an adhesive tape was wrapped around it to prevent wrinkles. However, it is difficult to wrap Eptsealer around the step, making the process of wrapping Eptsealer difficult.

[0006] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an electrical junction box that can easily prevent water from entering through the outlet. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the electrical junction box according to the present invention has the following features. an electrical junction box body that houses electronic components and has a cylindrical outlet through which electric wires connected to the electronic components are drawn out; a plurality of flexible sheet portions that are provided separately from the outlet, that are provided between an outer wall or an inner wall of the outlet and a portion of the electric wire that is drawn out from the outlet, and that are arranged around the axis of the electric wire; and a tape wrapped around the outer surface of the plurality of sheet portions. It must be an electrical junction box. [Effects of the Invention]

[0008] The electrical junction box according to the present invention has the effect of easily preventing water from entering through the outlet.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a simplified exploded perspective view showing one embodiment of an electrical junction box body provided in an electrical junction box of the present invention. [Figure 2] FIG. 2 is a perspective view of the outlet shown in FIG. [Figure 3] 3 is a view taken along the arrow A in a state where the wire harness is pulled out from the pull-out opening shown in FIG. 2. FIG. [Figure 4] 4 is a perspective view showing a state in which a flapper is attached to the outlet shown in FIG. 1. FIG. [Figure 5] 5 is a top view of the fin part shown in FIG. [Figure 6] 6 is a view of the latch portion shown in FIG. 5 as seen from the arrow B. FIG. [Figure 7] 7 is a view taken along the arrow C in a state where the wire harness is pulled out from the pull-out opening shown in FIG. [Figure 8] FIG. 8 is a simplified cross-sectional view of the outlet of the electrical junction box of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0012] For convenience of explanation, the following definitions are used for "front," "rear," "left," "right," "upper," and "lower" as shown in Figures 1 to 8. The "front-rear direction," "left-right direction," and "up-down direction" are perpendicular to each other. The front-rear direction corresponds to the "axial direction" of the present invention.

[0013] The electrical junction box 1 includes an electrical junction box body 2 (see FIG. 1), a plurality of flap portions 3 (see FIG. 4) as sheet portions, and tape 4 (see FIG. 8).

[0014] 1, the electrical junction box body 2 of this embodiment includes a block (not shown) on which electronic components are mounted, a frame 21 that houses the block, an upper cover 22, and a lower cover 23. The block, frame 21, upper cover 22, and lower cover 23 are each integrally molded from insulating synthetic resin.

[0015] The frame 21 is formed in a generally rectangular tubular shape with openings at the top and bottom. The upper cover 22 is attached to the frame 21 so as to close the upper opening of the frame 21. The lower cover 23 is attached to the frame 21 so as to close the lower opening of the frame 21.

[0016] Frame 21 has a first cutout 211 formed by cutting out the lower end, and a first outlet 212 standing outward from the edge of first cutout 211. Lower cover 23 has a main body wall (not shown) that closes the opening on the lower side of frame 21, and a standing wall 231 that stands upward (toward frame 21) from the edge of the main body wall.

[0017] The lower cover 23 has a second cutout 232 formed by cutting out the upper end of the standing wall 231, and a second outlet 233 extending outward from the edge of the second cutout 232. When the lower cover 23 is attached to the frame 21, as shown in FIG. 2 , the first outlet 212 and the second outlet 233 join together in the vertical direction to form a cylindrical outlet 24 through which the wire harness 5 serving as electric wires is drawn out of the electrical junction box body 2.

[0018] 2 and 3, the first outlet 212 has a pair of notches 213 at its rear end, through which a cable tie 6 (described later) is passed. The pair of notches 213 are arranged side by side in the axial direction of the wire harness 5. As shown in FIG. 3, the wire harness 5 passing through the outlet 24 is fixed to the first outlet 212 between the pair of notches 213 by the cable tie 6.

[0019] As shown in Figures 4, 7 and 8, the flaps 3 are provided separately from the outlet 24. The flaps 3 are provided between the outer wall or inner wall of the outlet 24 and the portion of the wire harness 5 that is drawn out from the outlet 24. The flaps 3 are provided in the form of a flexible thin sheet. In this embodiment, four flaps 3 are arranged around the axis of the wire harness 5.

[0020] 8, the front end of the fin 3 deforms along the outer or inner wall of the outlet 24. The rear end of the fin 3 deforms along the outer shape of the wire harness 5. The fin 3 also inclines toward the rear so as to approach the wire harness 5. This fills the gap between the outlet 24 and the wire harness 5.

[0021] As shown in Fig. 5, the latch portion 3 is provided so that its width narrows toward the end (rear end) on the wire harness 5 side. Also, as shown in Figs. 5 and 6, the latch portion 3 is provided with grooves 31 that run along the axis of the wire harness 5. In this embodiment, the grooves 31 are provided on both the upper and lower surfaces. By providing the grooves 31 in this manner, the flexibility of the latch portion 3 can be further improved.

[0022] In this embodiment, as shown in Fig. 4, one flap unit 3 is placed on the outer wall of the first outlet 212 and attached with adhesive, double-sided tape, etc. At this time, the flap unit 3 is placed on the outer wall of the first outlet 212 so as to cover the cutout. Furthermore, three flap units 3 are placed on the inner wall of the second outlet 233 and attached with adhesive, double-sided tape, etc.

[0023] 8, the tape 4 is wrapped around the outside of the plurality of latch portions 3. The tape 4 is wrapped from the front side of the front end of the latch portion 3 overlapping the first outlet 212 to the rear side of the rear end of the latch portion overlapping the wire harness 5.

[0024] According to the above-described embodiment, flexible latch parts 3 provided separately from the outlet 24 are provided between the outer wall or inner wall of the outlet 24 and the portion of the wire harness 5 drawn out from the outlet 24, and are arranged around the axis of the wire harness 5. Tape 4 is wrapped around the outside of the plurality of latch parts 3. By providing the latch parts 3 as described above, the step between the outlet 24 and the wire harness 5 is filled, and the tape 4 is wrapped around the inclined surface of the latch part 3. Therefore, even without providing an eptsealer, the tape 4 does not wrinkle, and water intrusion from the outlet 24 can be easily suppressed.

[0025] According to the above-described embodiment, the width of the latch portion 3 narrows toward the end on the wire harness 5 side. This prevents the ends of the latch portion 3 on the wire harness 5 side from overlapping with each other, further preventing the tape 4 from wrinkling, and thus preventing water from entering through the outlet 24.

[0026] According to the above-described embodiment, a plurality of grooves 31 are provided in the fin part 3. This increases the flexibility of the fin part 3, making it easier for the fin part 3 to deform along the inner or outer wall of the outlet 24 and the outer shape of the wire harness 5, thereby further suppressing water intrusion through the outlet 24.

[0027] According to the embodiment described above, since four of the plurality of flaps 3 are provided, the intrusion of water from the outlet 24 can be further suppressed.

[0028] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0029] According to the embodiment described above, four flaps 3 are provided, but this is not limitative. The number of flaps 3 may be determined in accordance with the shape of the outlet 24.

[0030] According to the above-described embodiment, the rotary part 3 is provided with the groove 31, but providing the groove 31 is not essential and may be omitted.

[0031] According to the above-described embodiment, the width of the latch portion 3 is narrowed toward the end on the wire harness 5 side, but this is not limited to this. The latch portion 3 may have a uniform width.

[0032] Here, the features of the above-described embodiments of the electrical junction box according to the present invention will be briefly summarized and listed below in [1] to [4].

[0033] [1] an electric junction box body (2) that accommodates electronic components and has a cylindrical outlet (24) through which electric wires (5) connected to the electronic components are drawn out; a plurality of flexible sheet portions (3) provided separately from the outlet (24), between an outer wall or an inner wall of the outlet (24) and a portion of the electric wire (5) drawn out from the outlet (24), and arranged around the axis of the electric wire (5); and a tape (4) wound around the outside of the plurality of sheet portions (3). It is an electrical junction box (1).

[0034] According to the configuration [1] above, the provision of the sheet portion (3) fills the gap between the outlet (24) and the electric wires (5), and the tape (4) is wrapped around the inclined surface of the sheet portion (3). Therefore, even without providing an eptsealer, the tape (4) does not wrinkle, and water intrusion through the outlet (24) can be easily prevented.

[0035] [2] In the electrical connection box (1) described in [1], The width of the plurality of sheet portions (3) narrows toward the end portion on the electric wire (5) side. Electrical junction box (1).

[0036] According to the configuration [2] above, overlapping of the ends of the sheet portion (3) on the wire (5) side can be prevented, and wrinkling of the tape (4) can be further prevented, thereby preventing water from entering through the outlet (24).

[0037] [3] In the electrical connection box (1) described in [1], A plurality of grooves (31) are provided on the surfaces of the plurality of sheet portions (3) along the axis of the electric wires (5) and aligned in the axial direction (front-rear direction) of the electric wires (5). Electrical junction box (1).

[0038] According to the configuration [3] above, the flexibility of the sheet portion (3) is increased, and the sheet portion (3) is easily deformed along the inner or outer wall of the outlet (24) and the outer shape of the electric wire (5), thereby further suppressing the intrusion of water through the outlet (24).

[0039] [4] In the electrical connection box (1) described in [1], The plurality of seat portions (3) are provided in four. Electrical connection (1).

[0040] According to the above configuration [4], the intrusion of water through the outlet (24) can be further suppressed. [Explanation of symbols]

[0041] 1 Electrical junction box 2 Electrical junction box body 3. Bella section (seat section) 4 Tape 24 Drawer 31 Groove

Claims

1. an electrical junction box body that houses electronic components and has a cylindrical outlet through which electric wires connected to the electronic components are drawn out; a plurality of flexible sheet portions that are provided separately from the outlet, that are provided between an outer wall or an inner wall of the outlet and a portion of the electric wire that is drawn out from the outlet, and that are arranged around the axis of the electric wire; and a tape wrapped around the outer surface of the plurality of sheet portions. Electrical junction box.

2. The electrical junction box according to claim 1, The widths of the sheet portions become narrower toward the end portions on the electric wire side. Electrical junction box.

3. The electrical junction box according to claim 1, A plurality of grooves are provided on the surfaces of the plurality of sheet portions so as to extend around the axis of the electric wire and to be aligned in the axial direction of the electric wire. Electrical junction box.

4. The electrical junction box according to claim 1, Four of the plurality of seat portions are provided. Electrical connections.

Images