JP2003143738A - Electrical connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connection box that can be removed from a vehicle body and collected efficiently when a junked vehicle is disassembled. SOLUTION: This electrical connection box for a vehicle has an electric circuit inside its casing on the front of which a plurality of connector hoods 6' for fitting and fixing connectors mounted on the end of a wire harness are formed. Furthermore, the thickness of the surrounding walls of the connector hoods 6' is regulated to be 1.5 times to twice a stipulated value.

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,
Electrical junction boxes such as a junction box (J / B), a relay box (R / B), and an electronic control unit box (ECU / B) are 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.

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. Not only wire harnesses used by electronic vehicles but also electric connection boxes connected to them use a large amount of metal materials such as copper, so that recycling cannot be ignored at present.

By the way, when dismantling an abandoned vehicle and removing the electric connection box from the vehicle body and collecting it, a lifting device such as a crane is used, and the J-shaped hook is hooked on a wire harness connected to the electric connection box. Often removed by pulling up. That is, the electrical connection box is detached by utilizing the locking force between the connector connected to the end of the wire harness and the connector connection portion of the electrical connection box.

FIG. 1 (a) schematically shows the structure of a conventional electric junction box. In the figure, reference numeral 1 denotes an electric connection box, and a fixing leg 3 is integrally formed on an electric connection box main body 2. Although the electrical junction box 1 is provided with a large number of connector connecting portions 4, only two connector connecting portions 4 are shown here for convenience. For the fixing foot 3,
A fixing hole 5 for attaching and fixing the electric junction box body 2 to the vehicle is formed. The electric junction box 1 is attached and fixed to the vehicle body by fixing members (not shown) such as bolts and screws. Further, in the connector connecting portion 4, a connector hood 6 is formed so as to project from the electric connection box body 2, and a connector 7 connected to the end of the wire harness W is fitted and fixed therein. FIG. 1B shows the state in a cross-sectional view.

In such a structure, when the J-shaped hook of a lifting device such as a crane is hooked on the wire harness W when the scrapped vehicle is dismantled and the electric junction box 1 is to be detached, the wire harness W is attached to the end. With the locking force between the connected connector 7 and the connector connecting portion 4, the connector hood 6 of the connector connecting portion 4 of the electric junction box 1 is, for example, as shown in FIG.
As shown in (c), there was a case where the electric connection box 1 could not be recovered because it was broken and the lock was released. In such a case, if the bolts used to fix the electric junction box are manually removed by the operator to recover, the workability is poor, a lot of time is spent, and the dismantling cost increases. Was becoming.

[0007]

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 that can be efficiently removed from the vehicle body and collected when the vehicle is scrapped. The task is to do.

[0008]

According to the present invention, the above problems can be solved by adopting the following technical means. (1) An electric connection box for an automobile, which has an electric circuit inside a case, and wherein a plurality of connector hoods for fitting and fixing a connector attached to an end of a wire harness are formed on a surface of the case, An electrical junction box characterized in that the wall thickness of the peripheral wall of the connector hood is specified to be 1.5 to 2 times the standard value. (2) An electric connection box for an automobile, comprising an electric circuit inside a case, and a plurality of connector hoods for fitting and fixing a connector attached to an end of a wire harness formed on a surface of the case. An electrical junction box characterized in that the height of the peripheral wall of the connector hood is regulated to 1.5 to 2 times the standard value.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to preferred examples. FIG. 2 is a plan view schematically showing the connector hood in the electric junction box according to the embodiment of the present invention in comparison with the conventional one. FIG. 2A shows a connector hood in a conventional electric junction box, and FIG. 2B shows a connector hood in an electric junction box according to an embodiment of the present invention. 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 peripheral wall thickness t0 of the connector hood 6 of the connector connecting portion 4 in the conventional electric junction box is 1.
It was set to 2 to 1.5 mm. On the other hand, the peripheral wall thickness t1 of the connector hood 6'of the connector connecting portion 4'of the electrical junction box according to the embodiment of the present invention is 1.
5 to 2 times, that is, 1.8 to 3.0 mm. Wall thickness t
If 1 is less than 1.8 mm, the hood portion may be damaged from the root, and the desired effect cannot be obtained. Further, if the wall thickness t1 exceeds 3.0 mm, the economy is not good. A plurality of connector hoods 6'of this embodiment are provided on the surface of the case of the electric junction 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 6'is made of a resin material such as polypropylene or nylon and is molded integrally with the case of the electric junction box.

In the electrical junction box according to the embodiment of the present invention, the peripheral wall thickness t of the connector hood 6'of the connector portion 4'is t.
By setting 1 as described above, the mechanical strength of the hood portion is increased, and the connector connected to the end of the wire harness can be firmly held. For this reason,
When dismantling a discarded vehicle, when the J-shaped hook of a lifting device such as a crane is hooked on the wire harness to remove the electric connection box according to this embodiment, the locking force becomes strong and the hood root is damaged and locked. It will not come off and the electric junction box can be reliably removed. Therefore, the workability is improved and the recovery rate of the electric junction box is also improved. In addition, in order to make it easier to remove, the easily breaking part (groove, slit,
Formed by small-diameter through holes or the like).

In the electrical junction box of the above embodiment, the desired effect was obtained by setting the peripheral wall thickness of the connector hood to be thick. However, in the electrical junction box according to another embodiment of the present invention, the connector hood The desired effect can be obtained by making the peripheral wall height higher than the conventional one. The peripheral wall height of the connector hood of the connector connecting portion in the conventional electric junction box has been determined to be 10 to 15 mm according to the standard. On the other hand, the peripheral wall height of the connector hood of the connector connecting portion of the electric connection box according to another embodiment of the present invention is 1.5 to 2 times the conventional height, that is, 15 to 30 mm. If the peripheral wall height is less than 15 mm, the hood portion may be damaged from the root, and the desired effect cannot be obtained. Moreover, if the peripheral wall height exceeds 30 mm, the economy is not good,
Contrary to space saving.

The present invention has been described above based on the embodiments, but the present invention is not limited to the above embodiments, and various modifications and changes can be made. For example, instead of increasing the peripheral wall thickness of all connector hoods of the electrical junction box as described above or increasing the peripheral wall heights of all connector hoods as described above, sufficient connector holding force can be obtained. The design may be selectively changed to some extent. Further, the peripheral wall thickness of the connector hood may be increased and the peripheral wall height may be increased to obtain a desired effect.

[0014]

As described above in detail, according to the present invention, the thickness of the peripheral wall of the connector hood of the electric junction box is defined to be 1.5 to 2 times the conventional standard, or the electric junction box. The connector hood height of 1.5-
By stipulating twice, during dismantling work of discarded vehicles,
Since the connector connected to the end of the wire harness can be firmly held and the locking force becomes strong, the electric connection box can be reliably removed. Therefore, the workability is improved and the recovery rate of the electric junction box is also improved.

[Brief description of drawings]

FIG. 1A is a perspective view schematically showing the structure of a conventional electric connection box, and FIG. 1B is a connector hood of the connector connection box of the electric connection box in which the connector connected to the end of the wire harness is shown. Sectional view showing a state of being fitted and fixed to
FIG. 6 is a cross-sectional view showing how the root part of the hood is damaged.

FIG. 2 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.

[Explanation of symbols]

1 electrical junction box 2 Electric junction box body 3 fixing feet 4, 4'connector connection 5 fixing holes 6,6 'Connector hood 7 connector W wire harness

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroyuki Hayashi             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. F-term (reference) 4E360 AB02 AB12 AB51 BA08 EA03                       EB04 EC04 ED03 ED17 ED27                       EE03 FA14 GA11 GA53 GB93                       GB94 GC08                 5G361 BA06 BB01 BC01

Claims (2)

[Claims] 1. An electric junction box for an automobile, which has an electric circuit inside a case, and wherein a plurality of connector hoods for fitting and fixing a connector attached to an end of a wire harness are formed on a surface of the case. , The thickness of the peripheral wall of the connector hood is 1.5 to 2 which is the standard value.
An electric junction box characterized by being specified twice. 2. An electric connection box for an automobile, which has an electric circuit inside a case, and wherein a plurality of connector hoods for fitting and fixing a connector attached to an end of a wire harness are formed on a surface of the case. , The height of the peripheral wall of the connector hood is a standard value of 1.5 to 2
An electric junction box characterized by being specified twice.