JP2020202659A - Electric connection box - Google Patents

Abstract

To provide an electric connection box which can fix a plurality of kinds of electric wire bundles having different outer diameters to a fixing piece of a line outlet.SOLUTION: A fixing piece 20 which configures a wire guiding part 16 into which an electric wire bundle is inserted is provided with a housing recess 21 into which the electric wire bundle is put. The fixing piece is configured so as to cover a peripheral-direction part of the electric wire bundle stored in the housing recess 21. The electric wire bundle is fixed to the fixing piece 20 with a pressure-sensitive adhesive tape in a state of being put into the housing recess 21. Then, the fixing piece 20 has a first fixing part 22 and a second fixing part 23 which are different from each other in depth of the housing recess 21 in a lining-up aspect in an opening direction (length direction of the electric wire bundle) of the wire guiding part 16.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to electrical junction boxes.

Conventionally, electric connection boxes such as relay boxes and fuse boxes have been used in vehicles for the purpose of improving the efficiency of electrical wiring and the maintainability (see, for example, Patent Document 1). Electrical components such as relays and fuses are appropriately mounted on the housing of the electrical junction box, and electric power from the battery or the like is supplied to the in-vehicle electrical components. Further, a plurality of electric wires are connected to the electric parts in the housing, and the plurality of electric wires are bundled and pulled out from the electric wire outlet of the housing to the outside of the housing. Then, the electric wire bundle is wound and fixed by a winding member such as an adhesive tape around a fixing piece extending from the electric wire outlet of the housing. Further, the fixed piece has a shape for accommodating a part of the electric wire bundle such as an arc-shaped cross section, and is configured so that the electric wire bundle drawn from the electric wire outlet can be accommodated in the fixed piece.

JP-A-2016-174504

In the above-mentioned electric junction box, the specifications of the electric component and the number of a plurality of electric wires connected to the electric component differ depending on the vehicle type and grade. That is, the outer diameter of the electric wire bundle drawn from the electric wire outlet of the housing differs depending on the vehicle type and grade. Therefore, when the outer diameter of the electric wire bundle is smaller than the depth of the electric wire accommodating portion of the fixed piece of the electric wire outlet, there is a problem that the electric wire bundle cannot be stably fixed to the fixed piece by the winding member. It was.

Therefore, it is an object of the present invention to provide an electric connection box capable of fixing a plurality of types of electric wire bundles having different outer diameters to a fixed piece of an electric wire outlet.

The electrical junction box of the present disclosure includes a housing body containing electrical components, a wire outlet formed in the housing body, and a housing having a fixing piece extending from the wire outlet to the outside of the housing body. A wire bundle connected to the electric component and pulled out from the wire outlet to the outside of the housing body, and a winding member for winding and fixing the wire bundle around the fixing piece, and fixing the wire bundle. The piece is provided with a storage recess into which the wire bundle is inserted, and is configured to cover a part of the wire bundle housed in the storage recess in the circumferential direction, and the wire bundle is in a state of being inserted into the storage recess. An electric connection box fixed to the fixing piece by the winding member, and the fixing piece has a first fixing portion and a second fixing portion having different depths of the accommodating recesses of the electric wire bundle. It has a mode of arranging in the length direction.

According to the present disclosure, it is possible to provide an electric connection box in which a plurality of types of electric wire bundles having different outer diameters can be fixed to a fixed piece of an electric wire outlet.

FIG. 1 is a schematic configuration diagram of an electrical junction box according to an embodiment. FIG. 2 is a perspective view showing the configuration around the electric wire guide portion in the electric junction box of the same form. FIG. 3 is a side view showing the configuration around the electric wire guide portion in the electric junction box of the same form. FIG. 4 is a front view showing the configuration around the electric wire guide portion in the electric junction box of the same form. FIG. 5 is a cross-sectional view showing a mode of the electric wire bundle when the outer diameter of the electric wire bundle is large. FIG. 6 is a cross-sectional view showing a mode of the electric wire bundle when the outer diameter of the electric wire bundle is small. FIG. 7 is a cross-sectional view for explaining the configuration of the cover piece in the modified example.

[Explanation of Embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.
The electrical junction box of the present disclosure is
[1] A housing body containing an electric component, a housing having an electric wire outlet formed in the housing body, and a fixing piece extending from the electric wire outlet to the outside of the housing body, and the electric component. It is provided with an electric wire bundle that is connected and pulled out from the electric wire outlet to the outside of the housing body, and a winding member that winds and fixes the electric wire bundle around the fixed piece, and the fixed piece is the electric wire. It is provided with an accommodating recess into which the bundle is inserted, and is configured to cover a part of the electric wire bundle accommodated in the accommodating recess in the circumferential direction. The electric wire bundle is inserted into the accommodating recess into the winding member. In the electric connection box fixed to the fixed piece, the first fixed portion and the second fixed portion having different depths of the accommodating recesses are arranged in the length direction of the electric wire bundle. It has in the aspect.

According to the above aspect, when the outer diameter of the wire bundle is large, the wire bundle is wound and fixed around the first fixing portion, and when the outer diameter of the wire bundle is small, the wire bundle is wound and fixed around the second fixing portion. Is possible. That is, it is possible to fix a plurality of types of electric wire bundles having different outer diameters to the fixed piece of the electric wire outlet.

[2] Both ends of the fixing piece in the circumferential direction of the electric wire bundle are partially cut out in the length direction of the electric wire bundle, so that the depth of the accommodating recess is shallower than that of the first fixing portion. It is preferable that the second fixing portion is configured.

According to the above aspect, the first fixing portion and the second fixing portion can be configured by a simple structure in which a part of the fixing piece is cut out.
[3] It is preferable that the fixing piece is provided with a cover portion that covers the accommodating recess, and the cover portion covers a portion that is not covered by the fixing piece in the circumferential direction of the electric wire bundle.

According to the above aspect, the infiltration of water into the electric wire outlet can be suppressed by covering the accommodating recess of the fixed piece with the cover portion.
[4] It is preferable that the cover portion sandwiches the winding member wound around the first fixing portion with both ends of the fixing piece in the circumferential direction of the electric wire bundle.

According to the above aspect, it is possible to suppress the intrusion of water from between the fixing piece and the cover portion at the portion where the winding member is sandwiched.
[5] It is preferable that the cover portion has a covering portion that covers the cutout portion formed in the fixing piece in order to form the second fixing portion.

According to the above aspect, since the notch portion of the fixed piece is covered with the covering portion, water is suppressed from entering the electric wire outlet side through the notch portion.
[Details of Embodiments of the present disclosure]
Specific examples of the electrical junction box of the present disclosure will be described below with reference to the drawings. It should be noted that the present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

As shown in FIG. 1, the electrical connection box 10 has a box-shaped housing 11 and an electrical component 12 housed in the housing 11. The electrical connection box 10 of the present embodiment is configured as a fuse box, a relay box, or the like that is interposed between a plurality of electrical components mounted on a vehicle and a power source such as a battery to supply and distribute power to each electrical component. The electric component 12 of the present embodiment is configured to include, for example, a single fuse module or a plurality of relay modules.

The housing 11 includes a housing body 13 and a cover 14 attached to the housing body 13. The housing body 13 and the cover 14 are injection-molded products made of, for example, a synthetic resin material. An electrical component 12 is assembled to the housing body 13.

On the side surface of the housing 11, an electric wire outlet 15 for pulling out a bundle of a plurality of electric wires (electric wire bundle W) connected to the electric component 12 to the outside, and a substantially cylindrical shape extending outward from the electric wire outlet 15 The electric wire guide portion 16 having a shape is formed. The electric wire bundle W is pulled out of the housing 11 through the electric wire guide portion 16. The specifications of the electric component 12 and the plurality of electric wires connected to the electric component 12 differ depending on the vehicle type and grade. Therefore, the outer diameter of the electric wire bundle W composed of a plurality of electric wires differs depending on the vehicle type and grade. Further, an exterior member X such as an adhesive tape that straddles and covers the electric wire guide portion 16 to the electric wire bundle W is provided at a portion where the electric wire bundle W is led out from the electric wire guide portion 16.

The electric wire guide portion 16 is formed of a fixing piece 20 extending from the housing body 13 and a cover piece 30 extending from the cover 14. Each of the fixed piece 20 and the cover piece 30 has an arc shape when viewed from the length direction of the electric wire bundle W passing through the electric wire guide portion 16 (see FIGS. 2 and 4). Then, by combining the fixing piece 20 and the cover piece 30, a substantially cylindrical shape of the electric wire guide portion 16 is formed.

(Structure of fixed piece 20)
The fixing piece 20 extends from a position corresponding to the electric wire outlet 15 of the housing body 13 to the outside of the housing body 13. The electric wire bundle W drawn out from the electric wire outlet 15 is fixed to the fixing piece 20 by winding the adhesive tape T as a winding member (see FIG. 5 and the like). The adhesive tape T is an elastic tape made of polyvinyl chloride or the like as a base material. Further, in FIGS. 2, 3 and 4, the electric wire bundle W and the adhesive tape T are not shown.

As shown in FIGS. 2, 3 and 4, the fixing piece 20 has an arc shape as described above, and the arc-shaped recess is a housing recess 21 into which the electric wire bundle W enters. Further, the fixing piece 20 is configured to cover a part of the electric wire bundle W passing through the electric wire guide portion 16 in the circumferential direction. Then, the electric wire bundle W is fixed to the fixing piece 20 by winding the adhesive tape T in a state where it is inserted into the accommodating recess 21 of the fixing piece 20.

Here, the fixed piece 20 has a first fixing portion 22 and a second fixing having different lengths in the circumferential direction D of the electric wire guide portion 16 (the circumferential direction of the electric wire bundle W passing through the electric wire guide portion 16). It has a unit 23. The first fixing portion 22 and the second fixing portion 23 are aligned in the length direction of the fixing piece 20 (the length direction of the electric wire bundle W). Specifically, the first fixing portion 22 is formed on the base end side of the fixing piece 20, and the second fixing portion 23 is formed on the tip end side of the fixing piece 20. Note that FIG. 5 shows a cross section orthogonal to the axis L of the electric wire guide portion 16 and passing through the first fixed portion 22, and FIG. 6 shows a cross section orthogonal to the axis L and passing through the second fixed portion 23. ..

Further, the first fixing portion 22 and the second fixing portion 23 have a concentric arcuate shape when viewed from the opening direction (axis L direction) of the electric wire guide portion 16. That is, each of the first fixing portion 22 and the second fixing portion 23 has the accommodating recess 21 into which the electric wire bundle W enters. In the following, the accommodating recess 21 of the first fixing portion 22 will be referred to as a first accommodating recess 21a, and the accommodating recess 21 of the second fixing portion 23 will be referred to as a second accommodating recess 21b.

At both end portions 20a of the fixed piece 20 in the circumferential direction D, cutout portions 24 are formed in which a portion on the tip end side of the fixed piece 20 (a part of the fixed piece 20 in the axis L direction) is cut out. The second fixed portion 23 is formed by forming each of these notch portions 24. That is, the length of the second fixing portion 23 having the notch portion 24 in the circumferential direction D is shorter than the length of the first fixing portion 22 having no notch portion 24 in the circumferential direction D. As a result, the depth of the second accommodating recess 21b of the second fixing portion 23 is made shallower than the depth of the first accommodating recess 21a of the first fixing portion 22.

(Structure of cover piece 30)
As shown in FIGS. 2, 3 and 4, the cover piece 30 extends from a position corresponding to the electric wire outlet 15 of the cover 14 to the outside of the housing 11. The cover piece 30 is configured to cover the accommodating recess 21 of the fixed piece 20. The cover piece 30 having an arc-shaped cross section orthogonal to the axis L and the fixed piece 20 having an arc-shaped cross section orthogonal to the axis L form a substantially cylindrical electric wire guide portion 16. That is, the cover piece 30 covers a portion not covered by the fixed piece 20 in the circumferential direction of the electric wire bundle W passing through the electric wire guide portion 16 (that is, the circumferential direction D of the electric wire guide portion 16).

The cover piece 30 has a first covering portion 31 facing the first fixing portion 22 in a direction orthogonal to the axis L. Further, the cover piece 30 has a second covering portion 32 facing the second fixing portion 23 in a direction orthogonal to the axis L. The first covering portion 31 and the second covering portion 32 are arranged side by side in the opening direction (axis L direction) of the electric wire guide portion 16. Specifically, the first covering portion 31 is formed on the base end side of the cover piece 30, and the second covering portion 32 is formed on the tip end side of the cover piece 30. The cross section of the first covering portion 31 orthogonal to the axis L has an arc shape (see FIG. 5).

The second covering portion 32 has an opposing portion 33 facing the second fixed portion 23 in a direction orthogonal to the axis L. Further, the second covering portion 32 has extending pieces 34 extending from both ends of the facing portion 33 in the circumferential direction D. Each extension piece 34 is configured to close each notch 24 of the fixed piece 20.

The operation of this embodiment will be described.
The outer diameter of the electric wire bundle W pulled out from the inside of the housing 11 through the electric wire guide portion 16 differs depending on the vehicle type and grade. Here, FIG. 5 shows a fixing mode of the electric wire bundle W when the outer diameter of the electric wire bundle W is larger than the depth of the first accommodating recess 21a of the first fixing portion 22.

As shown in FIG. 5, when the outer diameter of the electric wire bundle W is larger than the depth of the first accommodating recess 21a of the first fixing portion 22, when the electric wire bundle W is arranged in the first accommodating recess 21a, the electric wire A part of the bundle W protrudes from the first accommodating recess 21a. Therefore, the electric wire bundle W can be wound and fixed to the first fixing portion 22 by the adhesive tape T in a state where the electric wire bundle W is arranged in the first accommodating recess 21a. The adhesive tape T is also wound on the second fixing portion 23 side. That is, the electric wire bundle W is also wound and fixed to the second fixing portion 23 by the adhesive tape T.

Further, the portion of the electric wire bundle W exposed from the first accommodating recess 21a is covered with the first covering portion 31 of the cover piece 30. Then, the adhesive tape T is sandwiched between both end portions 30a of the first covering portion 31 in the circumferential direction D and both end portions 20a of the first fixing portion 22 in the circumferential direction D to be in a compressed state. As a result, the compressed adhesive tape T serves as a seal between the first fixing portion 22 and the first covering portion 31, and the infiltration of water from between the first fixing portion 22 and the first covering portion 31 is suppressed. ing.

On the other hand, FIG. 6 shows a fixing mode of the electric wire bundle W when the outer diameter of the electric wire bundle W is smaller than the depth of the first accommodating recess 21a of the first fixing portion 22. When the outer diameter of the electric wire bundle W is smaller than the depth of the first accommodating recess 21a of the first fixing portion 22, the electric wire bundle W cannot be wound and fixed by the adhesive tape T in the first fixing portion 22. Therefore, as shown in FIG. 6, the electric wire bundle W is wound and fixed to the second fixing portion 23 by the adhesive tape T in a state where the electric wire bundle W is arranged in the second accommodating recess 21b of the second fixing portion 23. In this case, the adhesive tape T may be wound around the first fixing portion 22, and the adhesive tape T may be sandwiched between both end portions 20a of the first fixing portion 22 and both end portions 30a of the first covering portion 31.

Further, each notch portion 24 formed by notching the fixing piece 20 to form the second fixing portion 23 is covered with each extension piece 34 of the cover piece 30. As a result, water is prevented from entering the electric wire guide portion 16 from the outer peripheral side of the electric wire guide portion 16 through the notch portion 24.

The cover 14 including the cover piece 30 is assembled to the housing body 13 after the electric wire bundle W extending from the electric component 12 in the housing body 13 is fixed to the fixing piece 20 with the adhesive tape T. There is.

The effect of this embodiment will be described.
(1) The fixing piece 20 constituting the tubular electric wire guide portion 16 through which the electric wire bundle W is inserted guides the first fixing portion 22 and the second fixing portion 23 having different depths of the accommodating recesses 21. The portions 16 are arranged in the opening direction (the length direction of the electric wire bundle W). According to this aspect, when the outer diameter of the wire bundle W is large, the wire bundle W is wound and fixed around the first fixing portion 22, and when the outer diameter of the wire bundle W is small, the wire bundle W is fixed to the second fixing portion. It can be wound and fixed around 23. That is, it is possible to fix a plurality of types of electric wire bundles W having different outer diameters to the fixed piece 20 of the electric wire outlet 15.

(2) Both ends 20a of the fixed piece 20 in the circumferential direction D of the wire guide portion 16 (circumferential direction of the wire bundle W) are partially cut out in the length direction (axis L direction) of the wire bundle W. The second fixing portion 23, in which the depth of the accommodating recess 21 is shallower than that of the first fixing portion 22, is configured. According to this aspect, the first fixing portion 22 and the second fixing portion 23 can be configured with a simple structure in which a part of the fixing piece 20 is cut out.

(3) A cover piece 30 that covers the accommodating recess 21 of the fixed piece 20 is provided, and the cover piece 30 is a portion that is not covered by the fixed piece 20 in the circumferential direction D of the electric wire guide portion 16 (the circumferential direction of the electric wire bundle W). Covering. According to this aspect, since the accommodating recess 21 of the fixing piece 20 is covered with the cover piece 30, it is possible to suppress the intrusion of water into the electric wire outlet 15.

(4) The cover piece 30 sandwiches the adhesive tape T wound around the first fixing portion 22 with both end portions 20a of the fixing piece 20 in the circumferential direction D of the electric wire guide portion 16 (the circumferential direction of the electric wire bundle W). There is. According to this aspect, it is possible to suppress the intrusion of water from between the fixing piece 20 and the cover piece 30 at the portion where the adhesive tape T is sandwiched.

(5) The cover piece 30 has an extension piece 34 that covers the notch portion 24 that is notched in the fixing piece 20 to form the second fixing portion 23. According to this aspect, since the cutout portion 24 of the fixed piece 20 is covered with the extending piece 34, water is suppressed from entering the electric wire outlet 15 side through the cutout portion 24.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-As shown in FIG. 7, each extension piece 34 of the cover piece 30 may be further extended as compared with the above embodiment. In the configuration shown in FIG. 7, the extension piece 34 is the circumferential end of the second fixed portion 23 of the fixed piece 20 when viewed from the direction orthogonal to the axis L of the electric wire guide portion 16 (for example, the Y direction in FIG. 7). It extends to the position where it wraps with the part. As a result, it is possible to further suppress the intrusion of water into the electric wire guide portion 16 from the gap between the circumferential end portion of the second fixing portion 23 and the extension piece 34.

In the above embodiment, the second fixing is performed at both ends of the second fixing portion 23 in the circumferential direction D of the electric wire guide portion 16 (circumferential direction of the electric wire bundle W) and the end portions of the extending pieces 34 in the circumferential direction D. The adhesive tape T wound around the portion 23 may be sandwiched. According to this aspect, the adhesive tape T sandwiched between the second fixing portion 23 and the extending piece 34 and compressed becomes a seal between the second fixing portion 23 and the extending piece 34, and the second fixing portion 23 It is possible to prevent water from entering the inside of the housing 11 (the wire outlet 15 side) from between the extension piece 34 and the extension piece 34.

In the above embodiment, the adhesive tape T is used as a winding member for winding and fixing the electric wire bundle W around the fixing piece 20, but for example, a binding band made of synthetic resin may be used as the winding member. Good.

In the above embodiment, the fixed piece 20 and the cover piece 30 have an arcuate cross section, and the electric wire guide portion 16 formed by combining the fixed piece 20 and the cover piece 30 has a cylindrical shape. In addition to this, for example, the electric wire guide The portion 16 may be formed in a square cylinder shape.

The technical idea that can be grasped from the above-described embodiment and modified example will be described.
An electrical connection box in which both ends of the second fixing portion and the covering portion in the circumferential direction of the electric wire bundle sandwich the winding member wound around the second fixing portion.

According to the above aspect, it is possible to prevent water from entering the wire outlet side from between the second fixing portion of the fixing piece and the covering portion of the cover.

D Circumferential direction of the wire guide part L Axis of the wire guide part T Adhesive tape (wrapping member)
W Wire bundle X Exterior member 10 Electrical junction box 11 Housing 12 Electrical parts 13 Housing body 14 Cover 15 Wire outlet 16 Wire guide 20 Fixed piece 20a End 21 Storage recess 21a 1st storage recess 21b 2nd storage recess 22 1st Fixed part 23 2nd fixed part 24 Notch part 30 Cover piece (cover part)
30a End 31 1st covering 32 2nd covering 33 Opposing part 34 Extending piece (covering part)

Claims (5)

A housing having a housing body in which electrical components are housed, an electric wire outlet formed in the housing body, and a fixing piece extending from the electric wire outlet to the outside of the housing body.
A bundle of electric wires connected to the electric component and drawn out from the electric wire outlet to the outside of the housing body.
A winding member for winding and fixing the electric wire bundle to the fixing piece is provided.
The fixing piece is provided with a storage recess into which the wire bundle is inserted, and is configured to cover a part of the wire bundle housed in the storage recess in the circumferential direction.
The electric wire bundle is an electric connection box that is fixed to the fixed piece by the winding member in a state of being inserted into the accommodating recess.
The fixing piece is an electrical connection box having a first fixing portion and a second fixing portion having different depths of the accommodating recesses arranged in the length direction of the electric wire bundle. Both ends of the fixed piece in the circumferential direction of the electric wire bundle are partially cut out in the length direction of the electric wire bundle, so that the depth of the accommodating recess is shallower than that of the first fixed portion. The electrical connection box according to claim 1, wherein a fixed portion is configured. A cover portion for covering the accommodating recess of the fixing piece is provided.
The electrical connection box according to claim 2, wherein the cover portion covers a portion not covered by the fixed piece in the circumferential direction of the electric wire bundle. The electric connection box according to claim 3, wherein the cover portion sandwiches the winding member wound around the first fixing portion with both ends of the fixing piece in the circumferential direction of the electric wire bundle. The electrical connection box according to claim 3 or 4, wherein the cover portion has a covering portion that covers the cutout portion formed in the fixing piece in order to form the second fixing portion. ..