JP2003063324A - Electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box which is easily able to disassemble and to reclaim a wire harness when disassembling a vehicle to be scrapped. SOLUTION: The electric connection box, which has an electric circuit inside a case on which surface multiple connector foods 1 are formed to store connectors mounted on one end of the wire harness and consists of a bottom face 2 mounted inward to a case face and on which terminal slots 5 are formed and side walls 3 which protrude on the case face and formed by extending to the outside from the bottom case 2, is characterized by making wall thickness of food wall thickness for a part 3A which tensile force 3 is added when adding tensile force on the wire harness thinner than wall thickness of the other parts and is located at an outer part from the case face among the side walls 3 of the connector food 1 on which a connector linked to the connector food during assembling operation.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a junction box (J / B), a relay box (R / B), an electronic control unit box (ECU / B).
The present invention relates to an electric connection box for automobiles, etc., and particularly to an electric connection box designed to be easily recycled.

[0002]

2. Description of the Related Art As is well known in the art, in order to form a circuit for connecting a wire harness to electrical components in an automobile,
An electric connection box such as a junction box (J / B), a relay box (R / B), and an electrocuni control unit box (ECU / B) is attached. These electric junction boxes have electric circuits (formed of metal bus bars) such as circuits for power distribution inside the case,
A plurality of connector hoods for accommodating and connecting the connectors connected to the ends of the wire harness are provided on the outside of the case.

FIG. 1 shows an example of a connector hood formed on an electric junction box. 1A is a plan view (terminals are omitted), and FIG. 1B is a cross-sectional view taken along line XX of FIG. 1A (terminals are shown). In the figure, 1 is a connector hood, which is composed of a bottom wall 2 and a peripheral wall 3. The bottom wall 2 is provided inside the case surface 4 and has a plurality of terminal holes 5. Perimeter wall 3
Are formed so as to extend outward from the bottom wall 2 and project from the case surface 4. The terminals of the electric circuit project from the terminal holes 5.

On the other hand, recently, the recognition of environmental problems has increased,
Effective recycling of resources has become a major issue. Such issues are no exception for discarded vehicles. The number of wire harnesses used by electronic vehicles in recent years is enormous, and its recycling cannot be ignored.

By the way, in dismantling a discarded vehicle, when the wire harness is removed from the vehicle body and collected, a pulling device such as a crane is used, and the J-shaped hook is hooked on the wire harness and pulled up to remove it. Become.

FIG. 2 schematically shows how the wire harness is removed near the electric junction box. FIG. 2A is a perspective view, and FIG. 2B is a view seen from the arrow A direction in FIG. An example of this is near where the electrical junction box is attached to the reinforcement. In the figure, 11 is an electric connection box,
A plurality of hood connectors 12 are formed. Further, fixing feet 13 for attaching and fixing to the reinforcement 14 are formed on the upper and left sides thereof, and are fixed to the reinforcement 14 by fixing means 15 such as bolts, nuts and screws.
On the other hand, connectors 18 are attached to the ends of the plurality of electric wires 17 from the wire harness 16, and these connectors 18 are respectively accommodated in the hood connector 12 of the electric connection box 11.
It is connected.

In such a structure, when the wire harness 16 is detached by the hook 19 of the lifting device such as a crane, the connection between the connector 18 of the wire harness 16 and the connector hood 12 of the electric connection box 11 is strong. In many cases, even if the wire harness 16 is pulled, the force is dispersed and the connector 18 often cannot be easily detached from the connector hood 12. Particularly, the wire harness 18 is connected to the connector 18 and the connector hood 12.
Such a situation was remarkable when the wire was pulled perpendicularly to the fitting with. In addition, if you try to remove it with excessive force, you may get a wire break or get an unexpected injury.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and provides an electric junction box in which a wire harness can be removed and collected efficiently when disposing of a discarded vehicle. That is the subject.

[0009]

According to the present invention, the above problems can be solved by adopting the following technical means. (1) Having an electric circuit inside the case, a plurality of connector hoods for accommodating the connectors attached to the ends of the wire harness are formed on the surface of the case, and the connector hood is located inside the case surface. An electric connection box for an automobile, comprising a bottom wall provided with a terminal hole and a peripheral wall extending outwardly from the bottom wall and projecting from a case surface, wherein the peripheral wall of the connector hood is outside the case surface. When a pulling force is applied to the wire harness to which the connector coupled to the connector hood is attached during the dismantling work, the hood wall thickness of the portion to which the pulling force is applied is An electrical junction box characterized by being made thinner than the wall thickness of the part. (2) The electric junction box according to claim 1, wherein the thinned hood portion has a wall thickness of 25 to 60% of the wall thickness of the other portion. (3) An electric circuit is provided inside the case, and a plurality of connector hoods for accommodating the connectors attached to the ends of the wire harness are formed on the surface of the case, and the connector hoods are provided inside the case surface. An electric connection box for an automobile, comprising: a bottom wall having a terminal hole formed therein; and a peripheral wall extending outwardly from the bottom wall and protruding from a case surface. And a direction in which the peripheral wall extends to the hood portion to which the pulling force is applied when a pulling force is applied to the wire harness to which the connector coupled to the connector hood is attached during disassembly work. An electrical junction box characterized in that slits are formed along the edges.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to preferred examples. FIG. 3 shows a connector hood in an electric connection box according to an embodiment of the present invention in comparison with a conventional connector hood. FIG. 3A is a conventional connector hood, and FIG.
(B) is a connector hood in the electrical junction box of the embodiment of the present invention. In these figures, elements similar to those in FIG. 1 are designated by the same reference numerals. Since the internal structure of the electric junction box and the structure for attaching it to the vehicle body are the same as the conventional ones, their explanations are omitted.

The connector hood 1 of this embodiment comprises a bottom wall 2 and a peripheral wall 3. The bottom wall 2 is provided inside the case surface 4 and has a plurality of terminal holes 5. The peripheral wall 3 is formed so as to extend outward from the bottom wall 2 and project the case surface 4. With such a configuration, the function of preventing the twisted insertion of the connector of the wire harness is exerted. A plurality of connector hoods 1 of the present embodiment are provided on the surface of the case of the electric connection box, and actually have various sizes and shapes according to the shape of the connector connected to the end of the wire harness. The connector hood 1 is made of a resin material such as polypropylene or nylon and is integrally formed with the case of the electric junction box.

In this embodiment, as shown in FIG. 3B, a portion of the peripheral wall 3 of the connector hood 1 that is outside the case surface and is connected to the connector hood 1 during disassembly work. When a pulling force is applied to the wire harness to which the attached connector is attached, the hood wall thickness of the portion 3A to which the pulling force is applied is made thinner than the wall thickness of the other portion 3B. That is, assuming that the wall thickness of the peripheral wall portion 3A of the present embodiment is t2 and the wall thickness of the peripheral wall portion 3A of the connector hood 1 of the conventional electric connection box is t1, the peripheral wall 3 is formed so that t2 <t1. t1 corresponds to the thickness of the portion 3B other than the peripheral wall portion 3A in this embodiment. Although t2 depends on the shape and size of the electric junction box, the connector, etc., or the type of resin material, t2 is usually set to about 25 to 60% with respect to t1.
If it is thicker than the above range, the desired effect cannot be obtained, and if it is thinner than the above range, it is likely to be damaged when the connector is joined.

With the above structure, when a pulling force is applied to the wire harness to which the connector coupled to the connector hood 1 is attached during the disassembling work, the pulling force is applied to the portion 3A of the peripheral wall 3. The peripheral wall portion 3A is destroyed by the force, and the connector can be easily removed from the connector hood 1. Moreover, the connector hood 1 in the electrical junction box of the present embodiment exerts a function of preventing the twisted insertion when the connector is fitted, and sufficiently maintains the connection with the connector when the vehicle is used. Therefore, the electrical connection box of the present embodiment having such a connector hood 1 fully exhibits its function at the time of assembling the wire harness and at the time of using the electric connection box, and at the time of disassembling work, detaching the wire harness, Since collection can be done easily, work efficiency is improved and collection rate is also improved.

Next, another embodiment according to the present invention will be described.
FIG. 4 is a plan view showing the connector hood in the electric junction box according to this embodiment. In these figures, the same elements as those in FIG. 3 are designated by the same reference numerals. In the above embodiment, the wall thickness of the peripheral wall portion 3A is formed thinner than the other portion 3B,
In the electrical junction box of the present embodiment, a slit S is formed in the peripheral wall portion 3A along the direction in which the peripheral wall 3 extends. Other structures are the same as in the case of FIG. The slit S may be formed from the case surface to the upper side, and the width thereof is 0.5 to 1
It may be about mm.

With the above structure, when a pulling force is applied to the wire harness connected to the connector coupled to the connector hood 1 during the disassembling work, the pulling force is applied to the portion 3A of the peripheral wall 3. In addition, since the slit S is formed in this portion, the peripheral wall portion 3A is destroyed by the force, and the connector can be easily removed from the connector hood 1. Therefore, similar to the above embodiment, during the dismantling work, the wire harness is removed,
Since collection is easy, work efficiency is improved and collection rate is also improved.

[0016]

As described in detail above, according to the present invention, a portion of the peripheral wall of the connector hood of the electric junction box, which is outside the case surface, is attached to the connector hood during disassembly work. When a tensile force is applied to the wire harness to which the connected connector is attached, the hood portion to which the tensile force is applied is formed to be thinner than the other portions, or the hood portion is formed. By forming slits along the direction in which the peripheral wall extends, the connector of the wire harness can be easily removed from the connector hood during dismantling work of a discarded vehicle, making it easy to remove and collect the wire harness, improving work efficiency. The recovery rate is also improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a connector hood in a conventional electric junction box, in which (a) is a front view and (b) is XX of (a).
It is a line sectional view.

2A and 2B are diagrams showing a state of removing a wire harness in the vicinity of an electric junction box, FIG. 2A being a perspective view and FIG. 2B being a view seen from an arrow A direction in FIG.

FIG. 3 is a plan view showing a connector hood in an electric junction box according to an embodiment of the present invention in comparison with a conventional one.
(A) is the conventional one, and (b) is the one of this embodiment.

FIG. 4 is a plan view showing a connector hood in an electric junction box according to another embodiment of the present invention.

[Explanation of symbols]

1 Connector Hood 2 Bottom Wall 3 Peripheral Wall 3A Peripheral Wall Part 3B to which the pulling force of the wire harness is applied at the time of disassembling work 3B Part of peripheral wall 4 Case surface 5 Terminal hole S

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takamitsu Miyakoi             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. (72) Inventor Hiroyuki Hayashi             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. F-term (reference) 5G361 AA06 AB12 AC01 AD01 AE01                 5G363 AA16 BA02 DC02

Claims (3)

[Claims] 1. An electric circuit is provided inside a case, and a plurality of connector hoods for accommodating a connector attached to an end of a wire harness are formed on a surface of the case. An electric connection box for an automobile, comprising an inner bottom wall having a terminal hole formed therein, and a peripheral wall extending outward from the bottom wall and projecting from a case surface, wherein the case surface is one of the peripheral walls of the connector hood. When a pulling force is applied to the wire harness to which the connector coupled to the connector hood is attached, which is the outer side portion, at the time of disassembling work, the hood wall thickness of the portion to which the pulling force is applied is set. An electrical junction box characterized by being made thinner than the thickness of other parts. 2. The electrical junction box according to claim 1, wherein the thickness of the thinned hood portion is 25 to 60% of the thickness of the other portion. 3. An electric circuit is provided inside the case, and a plurality of connector hoods for accommodating the connectors attached to the ends of the wire harness are formed on the surface of the case, and the connector hood is inside the case surface. Is provided in
An electric connection box for an automobile, comprising a bottom wall having terminal holes and a peripheral wall extending outward from the bottom wall and projecting from a case surface, wherein a portion of the peripheral wall of the connector hood outside the case surface. Further, when a pulling force is applied to the wire harness to which the connector coupled to the connector hood is attached at the time of disassembling work, the hood portion to which the pulling force is applied is extended along the direction in which the peripheral wall extends. An electrical junction box characterized in that a slit is formed in the electrical connection box.