JPH11260437A - Waterproof protecting cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent interference between a joint box for housing an electric wire connecting part and an outside electric wire and prevent the damage of the outside electric wire and the generation of noise. SOLUTION: A joint box 22 is constituted with a upper and lower case members 23a, 23b cut in half along the direction of electric wires 25, 26, 27 and electric wire connecting part housing chambers 36a, 36b for housing the electric wire connecting part formed in the joining state of the case members 23a, 23b. An elastic sheet 41 covering the joining state of the upper and lower case members 23a, 23b from the outside is joined to the outer surface in an open state of the upper and lower case members 23a, 23b, and thereby, the contact of the outside electric wire and the joint box 22 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof protective cover for accommodating a connecting portion for connecting a plurality of electric wires and protecting the connecting portion from being wetted by water and from contact with other electric wires.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a conventional waterproof protective cover described in Japanese Utility Model Laid-Open No. 6-9064. The waterproof protective cover 1 is made of an insulating resin, and an upper case member 3a and a lower case member 3b, which are halved along the insertion direction of the electric wires 4 and 5, are connected by a hinge 2.
The upper case member 3a and the lower case member 3b are formed in a rectangular box shape. Further, each of the case members 3a and 3b has outer wall portions 6a and 6b,
A pair of partition walls 7a, 7b is provided inside each of the outer walls 6a, 6b. The portions surrounded by the outer wall portions 6a and 6 and the partition portions 7a and 7b are used as the wire connection portion housing chambers 8a and 8b. The wire connection portion housing rooms 8a and 8b have insulation and flexibility. Is filled.

[0003] Hook members 13a, 13b are provided on outer wall portions 6a, 6b of the upper and lower case members 3a, 3b opposite to the hinge 2, and the hook members 13a, 13b are engaged with each other. By the combination, the closed state of the upper and lower case members 3a, 3b is maintained.

[0004] The electric wires 4 and 5 are connected by a connecting portion 10, and this connecting portion 10 is installed in an electric wire connecting portion accommodating chamber 8b of one of the case members (the lower case member 3b). And
As shown by the arrow in FIG. 9 (a), the upper cover member 3a is rotated to match the lower case member 3b, and as shown in FIG. 9 (b), the hook members 13a and 13b are engaged to form a box. By doing so, the wire connection portion housing chambers 8a and 8b are closed, and the connection portion 10 is sealed and protected inside.

The outer walls 6a of the upper and lower case members 3a and 3b are used for inserting the electric wires 4 and 5, respectively.
6b, electric wire insertion holes formed in the partition walls 7a, 7b, 12a, 12b are provided on both sides of the electric wire connection portion accommodating chambers 8a, 8b to receive the sealing material 9 leaking from the electric wire connection portion accommodating rooms 8a, 8b. It is a reservoir.

[0006]

FIG. 7 shows a state in which the waterproof protective cover 1 described above is bundled together with external electric wires 14 to form an electric wire bundle 15. As shown in FIG. 8, the bundle of wires 15 is wound around the outside with an exterior tape 16, so that the wires are separated from each other and the waterproof protection cover 1 is formed.
Is prevented.

However, in the state of being bundled with the exterior tape 16, the case members 3a and 3b of the waterproof protection cover 1 interfere with the external electric wire 14 due to vibration of the automobile or the like, or bite into the external electric wire 14, thereby causing This causes a problem that the insulating coating of the electric wire 14 is damaged. Further, there is also a disadvantage that abnormal noise is generated due to interference of the waterproof protective cover 1 with the external electric wire 14 or a panel of an automobile due to vibration or the like.

Accordingly, an object of the present invention is to provide a waterproof protective cover which does not damage external wires even when bundled with external wires and does not generate abnormal noise.

[0009]

In order to achieve the above object, a first aspect of the present invention relates to an upper and lower case member that is divided in half along the insertion direction of an electric wire, and an electric wire formed in a state where the case members are joined together. A waterproof protective cover provided with an electric wire connection portion accommodating chamber for accommodating the connection portion, wherein an elastic sheet covering the upper and lower case members from outside is joined to an outer surface of the upper and lower case members in an open state. It is characterized by having been done.

In the present invention, the elastic sheets joined to the outer surfaces of the upper and lower case members cover the upper and lower case members when the upper and lower case members are joined. When the elastic sheet covers the upper and lower case members as described above, the elastic sheet is in contact with the external electric wires, so that the upper and lower case members and the external electric wires do not directly interfere or bite. In addition, the elastic sheet acts as a cushioning material due to its elasticity. As a result, the external electric wire is not damaged and no abnormal noise is generated.

According to a second aspect of the present invention, in the first aspect of the present invention, the elastic sheet has its ends overlapped with each other in a state where the upper and lower case members are aligned.

According to the present invention, since the ends of the elastic sheet are overlapped with each other, the elastic sheet can completely cover the upper and lower case members. For this reason, interference or biting between the case member and the external electric wire can be reliably prevented.

According to a third aspect of the present invention, in the second aspect of the present invention, the elastic sheet includes a joining means for joining the ends and maintaining a state of overlapping the ends. And

Since the joining means maintains the overlapping state of the ends of the elastic sheet, the elastic sheet does not inadvertently expand from the state where the case member is covered. Therefore, the cover state of the case member is stabilized.

A fourth aspect of the present invention is the invention according to any one of the first to third aspects, wherein the elastic sheet is a foam.

The foam is rich in elasticity, and by forming an elastic sheet using the foam, it is possible to reliably prevent the external electric wires from being damaged and generating abnormal noise.

[0017]

1 is a plan view of a waterproof protective cover 21 according to an embodiment of the present invention, and FIG. 2 is a perspective view of an assembled state. The waterproof protective cover 21 of this embodiment includes a joint box 22 and an elastic sheet 41.

As shown in FIG. 1, the joint box 22 has upper and lower case members 23a and 23b connected by a hinge 24, and is entirely formed of resin. The upper and lower case members 23a and 23b are
The upper and lower case members 23a and 23 are combined to form a box that accommodates a connection portion (not shown) of an electric wire. The upper case member 23a and the lower case member 23b are
Outer wall portions 29a and 29b rising from a and 28b are provided on the outer peripheral portion, respectively.

The outer wall portion 29a of the upper case member 23a has a side wall portion 30a located on the hinge 24 side, a side wall portion 31a located on the opposite side to the hinge 24, and a side wall portion 30a in a direction intersecting with the wire insertion direction. , 31a are connected to the front wall 32a and the rear wall 33a. The same applies to the outer wall portion 29b of the lower case member 23b.
The side wall 30b is located on the fourth side, the side wall 31b is located on the side opposite to the hinge 24, and the front wall 32b and the rear wall 33b are connected to each other in a direction intersecting the wire insertion direction. I have.

The side walls 30a, 31 of the upper case member 23a
a is located between the front wall portion 32a and the rear wall portion 33a,
And partition walls 34a and 34 in a direction intersecting the wire insertion direction.
5a are continuously provided. Then, the partition portions 34a, 3
5a and the side wall portions 30a and 31a, the upper case member 23a has a wire connection portion accommodating chamber 36.
a is formed.

The same applies to the lower case member 23b, which is located between the front wall portion 32b and the rear wall portion 33b and intersects with the wire insertion direction in partition walls 34b and 35b.
Side walls 30b and 31b are continuously provided, and surrounded by the partition walls 34b and 35b and the side walls 30b and 31b, an electric wire connection portion accommodating chamber 36b is formed.

Each of the wire connection portion housing chambers 36a, 36
b is filled with a sealing material (not shown). A flexible insulating resin such as butyl rubber or silicone rubber is used as the sealing material.
36b, the electric wire connection portion accommodating chamber 36
The connection part of the electric wire accommodated in a and 36b can be waterproofed in an insulated state.

Upper case member 23a and lower case member 23
The storage chambers 37a, 38a on the side of the upper case member 23a where the storage chambers 37a, 38a, 37b, 38b are formed before and after the wire connection part storage chambers 36a, 36b of FIG. Department accommodation room 3
6a, and the storage chambers 37b, 38b on the lower case member 23b side are formed with partition walls 34b, 35.
and b is formed by being separated from the electric wire connection portion accommodating chamber 36b. These storage chambers 37a, 38a, 3
7b and 38b allow the sealing material from the inside of the electric wire connection portion accommodating chambers 36a and 36b to flow in, and thus can prevent the sealing material from flowing out.

Further, in order to attach the electric wires 25, 26 and 27 to the joint box 22, the electric wire insertion holes 29a are formed in the front wall portion 32a and the partition wall portion 34 in the upper case member 23a.
a, 35a and a portion of the rear wall portion 33a corresponding to the electric wire. Similarly, also in the lower case member 23b,
The electric wire insertion hole 29b has a front wall portion 32b, partition walls 34 and 35b.
a and a portion of the rear wall 33b corresponding to the electric wire.

The elastic sheet 41 is connected to the joint box 2
2 are joined to the outer surfaces of the upper and lower case members 23a and 23b in the opened state. That is, the elastic sheet 41 is attached to the bottom wall 2 of the upper and lower case members 23a and 23b.
8a and 28b. An adhesive or an adhesive is applied to a surface of the elastic sheet 41 on the joint box 22 side for joining to the joint box 22. A portion indicated by reference numeral 42 is a portion to which an adhesive or an adhesive is applied.

The elastic sheet 41 has four sides 43, 44, 45,
The joint box 22 is attached to the lower side 42 at one end thereof. The other end of the elastic sheet 41 extends outward from the joint box 22, so that the upper side 44 is separated from the joint box 22.

The upper side 44 located on the outer side of the joint box 22 is superimposed on the lower side 43 as shown in FIG.
1 can cover the entire joint box 22 in which the upper and lower case members 23a and 23b are closed. Therefore, the entire joint box 22 is not exposed to the outside, and does not come into direct contact with an external electric wire or the like.

In order to maintain the superimposed state of the upper side 44 and the lower side 43, a joining means (not shown) by applying an adhesive or the like is provided at the superimposed portion of the upper side 44 and the lower side 43. . By providing such joining means, the state in which the elastic sheet 41 covers the joint box 22 is stabilized, and the elastic sheet 41 does not inadvertently enter the expanded state.

The length of the elastic sheet 41 in the horizontal direction is longer than the entire length of the joint box 22, so that the left and right horizontal sides 45 and 46 extend outside the joint box 22. By extending the lateral sides 45 and 46 in this manner, the elastic sheet 41 is in a wrapped state covering the length direction of the joint box 22 as shown in FIG. The end is not exposed.

The above elastic sheet 41 is formed of an elastic material, and can elastically cover the entire joint box 22. As this material,
An elastic material such as rubber or a foamed material such as foamed resin or foamed rubber is selected. When a foam is used, there is an advantage that the joint box 22 can be reliably and elastically covered since the foam is rich in elasticity.

The assembly of such an embodiment is performed by the electric wires 25,
The joint box 22 is closed by placing the connection portions 26 and 27 in the wire connection portion accommodating chamber 26b of the lower case member 23b and rotating the upper case member 23a so as to match the lower case member 23b. Then, the upper side 44 is overlapped and joined to the lower side 43 of the elastic sheet 41 to form the waterproof protective cover 21 shown in FIG. In the waterproof protective cover 21 in this state, since the entire joint box 22 is covered with the male sheet 41, the external electric wires do not come into contact with the joint box 22.

FIG. 3 shows an electric wire bundle 47 incorporating the waterproof protective cover 21 assembled as described above. The waterproof protective cover 21 is arranged at a substantially central portion of a plurality of external electric wires 48 that are routed at the same time, and the outer bundle 49 is wrapped around the bundled external electric wires 48 to prevent the electric wire bundle 47 from collapsing. Is done.

In the state of the electric wire bundle 47, since the entire joint box 22 is covered with the elastic sheet 41, the external electric wires 48 do not come into contact with the joint box 228, and the external electric wires 48 Is in contact with In addition, since the elastic sheet 41 has elasticity, even if a minute vibration from an automobile is transmitted to the electric wire bundle 47, not only does the insulating coating of the external electric wire 48 be damaged, but also abnormal noise is generated. Will not be done.

FIG. 4 shows a state in which the electric wire bundle 47 is connected to an automobile panel 50.
The state attached to is shown. FIG. 5 shows that the protection cover 21 moves in the electric wire bundle 47 due to vibration during traveling, and
In this state, the exterior tape 49 is pressed against the panel 50 by this approach. Also in this case, since the elastic sheet 41 performs a buffer function such as vibration absorption, the exterior tape 49 is not damaged, and no abnormal noise is generated. The invention is not limited thereto, and the elasticity of the elastic sheet 41 can also prevent the panel 50 from being damaged.

[0035]

As described above, according to the first aspect of the present invention, since the upper and lower case members are covered when the elastic sheet is combined with the upper and lower case members, the upper and lower case members and the external electric wires are connected. No direct interference or biting occurs, and no external electric wires are damaged or noise is generated.

According to the second aspect of the present invention, since the ends of the elastic sheet are overlapped with each other, the elastic sheet can completely cover the upper and lower case members, and the upper and lower case members and the external electric wires can be connected. Interference and biting can be reliably prevented.

According to the third aspect of the present invention, the elastic sheet is prevented from being inadvertently unfolded from the cover state of the case member by the joining means, and the cover state of the case member is stabilized.

According to the fourth aspect of the present invention, since the elastic sheet is made of a foam having high elasticity, it is possible to reliably prevent the external electric wire from being damaged or generating abnormal noise.

[Brief description of the drawings]

FIG. 1 is a plan view showing a waterproof protective cover according to an embodiment of the present invention in an unfolded state.

FIG. 2 is a perspective view showing a state in which an upper and lower case member in a closed state is covered by an elastic sheet.

FIG. 3 is a sectional view of an electric wire bundle in which a waterproof protective cover is incorporated.

FIG. 4 is a cross-sectional view showing a state in which a bundle of electric wires incorporating a waterproof protection cover is attached to a panel.

FIG. 5 is a plan view of a conventional waterproof protective cover.

FIGS. 6A and 6B are cross-sectional views showing an operation for closing a waterproof protective cover in the related art.

FIG. 7 is a perspective view of an electric wire bundle using a conventional waterproof protection cover.

FIG. 8 is a perspective view showing a state in which an exterior tape is wound around a wire bundle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Waterproof protective cover 23a Upper case member 23b Lower case member 36a 36b Wire connection part accommodation room 41 Elastic sheet

Claims (4)

[Claims] 1. A waterproof protective cover comprising upper and lower case members that are split in half along the direction of insertion of an electric wire, and an electric wire connection portion accommodating chamber formed in a state where the case members are joined to accommodate a connection portion of the electric wire. A waterproof protective cover, wherein an elastic sheet for covering the aligned state of the upper and lower case members from the outside is joined to an outer surface of the upper and lower case members in an open state. 2. The waterproof protective cover according to claim 1, wherein the elastic sheets have ends overlapped with each other in a state where the upper and lower case members are aligned. 3. The waterproof protective cover according to claim 2, wherein the elastic sheet is provided with a joining means for joining the ends and maintaining the overlapping state of the ends. . 4. The waterproof protective cover according to claim 1, wherein the elastic sheet is a foam.