JP3211719B2 - Cover case for electrical junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover case for an electric junction box comprising a lower cover case and an upper cover case. The cover case is provided with a stopper for preventing the side wall of the cover case of the synthetic resin molded product from bending inward. This prevents deformation of the case.

[0002]

2. Description of the Related Art An electrical junction box used for branch connection of an automobile wire harness or the like to various electric components has a branch connection point concentrated in one place, and the wiring is reasonably and economically branched. With the increase in the density of wire harnesses, various types have been developed according to vehicle types or applications.

[0003] The electric junction box is formed using a case made of a synthetic resin molded product such as a so-called lower case, a lower cover case, an upper case, and an upper cover case. For example, the lower case is housed in the lower cover case, the upper case is placed or mounted on the lower case, the upper cover case is put on the upper case, and the lower cover case and the upper cover case are locked. In addition, the upper case and the lower case have an electronic circuit unit inside or outside thereof,
Because wiring (wire harness) is connected to the outer surface,
In some cases, a lead-out port for leading a wiring is formed in a side wall of the lower cover case or the upper cover case.

FIGS. 9 and 10 show a conventional electric connection box, and a lower cover case (hereinafter, simply referred to as a lower cover) 10.
And an upper cover case (hereinafter, simply referred to as an upper cover) 20, and a lock claw 10 a of the lower cover 10.
The lower cover 10 and the upper cover 20 are locked by forming a box by engaging the lock hole 20a of the upper cover 20 with the lower cover 10. Here, the illustration of the lower case and the upper case is omitted.

In particular, FIG. 10 shows a type having a wiring lead-out opening for leading a wire harness to the outside of the box.
And a guide portion 1c for protecting the wire harness (W / H) 11 from around the wiring lead-out opening 1b on the one side surface 1a and arranging the wire harness (W / H) 11 in a required direction. Is protruding.

[0006]

A case of a synthetic resin molded product such as a lower case, a lower cover, an upper case, and an upper cover which constitutes an electric junction box is usually formed by melting a thermoplastic or thermosetting synthetic resin. Is injected into a mold, filled, and cooled and solidified (cured) to be molded, that is, a so-called injection molding is used to produce a case having a desired shape.

[0007] The case body of a resin molded product becomes a case of a fixed shape due to cooling and solidification (hardening) of the molten resin in a mold. Then, the resin molded product is not completely solidified. For this reason, when the case of the resin molded product is a rectangular box shape having a corner portion and a flat plate portion, if the mold is opened and taken out and left as it is, as shown in FIG. Thus, a force acting on the longitudinal side walls 1d and 1e sandwiched between the corners 2 to fall down to the bottom plate 3 side acts on the side walls 1d and 1e.
Is bowed.

[0008] When such a deformation occurs, there arises a problem that the case cannot be accommodated in the cover or the lower cover and the upper cover cannot be assembled. In addition, there is a problem that workability at the time of assembling is reduced, and efficiency of assembling work is greatly reduced.

[0009] Therefore, conventionally, after removing the resin molded case from the mold, before the electric connection box is actually assembled, the case is filled with newsprint or a wooden mold is inserted into the case to form the molded product. The deformation of the product was suppressed and the shape was stabilized.

However, when stuffing newsprint, there is a problem that the case is not held firmly in a predetermined shape because the strength of holding the case in a fixed shape is poor and the stuffed newsprint can easily come off. Was. On the other hand, when inserting a wooden mold, one wooden mold is required for each case, and the shape, size, etc. of the electric connection box vary depending on the vehicle type and application. However, there is a problem that the cost must be increased due to the necessity of making a new device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in a cover case for an electric junction box made of a resin molded product, a cover for preventing a side wall from bending is provided. It is an object of the present invention to prevent the side wall of the cover case from being bent until the electric junction box is actually assembled after molding without the necessity of separately preparing a mold material such as a wooden mold.

[0012]

In order to solve the above-mentioned problems, the present invention relates to a cover case for an electric junction box comprising a resin molded product provided with a stopper for preventing deflection, wherein the cover case has opposed side walls. The above-mentioned stopper for bending prevention is integrally provided at one opening edge through a hinge, and the stopper for bending prevention is tilted into the cover case, and both end surfaces of the stopper for bending prevention are provided on the inner surface of the opposed side wall. Abutting, as a configuration for restricting the inward bending of these side walls, and in a state where the bending prevention stopper is tilted into the cover case, positioned at the center in the length direction inside the cover case, While pulling out the wire from one side of the deflection prevention stopper to the wire outlet, the lower surface of the deflection prevention stopper is removed from the other side of the deflection prevention stopper. So as to draw the wire into the wire outlet and provides a electrical cover case junction box, characterized in that to have a function for dividing the wire path to the deflection preventing stopper.

The form of the stopper for preventing deflection is not particularly limited, and various forms such as a rod, a plate and the like can be used. Usually, one stopper is provided via a hinge substantially at the center in the longitudinal direction of the edge of the side wall opening. It may be formed. When the length in the length direction of the side wall is large, one bending prevention stopper may be formed at each of a plurality of locations in the length direction of the side wall. The opening edge of the side wall here is near the upper end of the upper surface of the side wall or the inner side surface or the outer side surface of the side wall.

If the cover case for an electric junction box having the above configuration is formed, after the molding, a bending prevention stopper attached via a hinge to the opening edge of the opposite side wall of the cover case is provided.
By falling down into the cover case and interposing between the opposing side walls so that the ends on both sides in the longitudinal direction abut against both inner surfaces of the opposing side walls, the side walls are supported outward and the side walls are supported. Inward bending can be prevented. Therefore, by keeping this state before assembling the electric connection box, the cover case is solidified into a predetermined shape, and thus the assembling work of the electric connection box can be performed smoothly.

Also, since the stopper for preventing deflection is formed integrally with the case, unlike the conventional case, it is not necessary to manufacture a wooden member such as a wooden mold separately from the cover case. Such costs can be significantly reduced as compared with the related art.

In the case where the stoppers for preventing deflection are formed at a plurality of locations in the lateral direction of the side wall, one side wall and the other side are disposed in the lateral direction (length direction) of the opposing side wall in consideration of the shape stability of the molded product. It is preferable to form them alternately on the side walls. Thereby, the shape of the entire cover case can be held more stably.

Further, as described above, the stopper for preventing deflection is located at the center in the longitudinal direction inside the cover case, and the electric wire is drawn out from one side of the stopper to the electric wire outlet, and the stopper is provided. When the stopper is provided with a function of dividing a wire path by pulling out the wire from the other side portion to the wire outlet through the lower surface of the stopper, for example, a part of W / H (wire) is held down. After lowering the deflection prevention stopper into the lower cover and interposing it between the insides of the opposing side walls,
A part of the W / H (electric wire) is pulled out from one side of the stopper through the lower surface to an electric wire outlet, and then,
By pulling out the remaining wire of W / H (wire) from the other side of the stopper to the wire outlet, it is possible to effectively use the space in the lower cover and to perform the wire routing work smoothly. Moreover, W / H in the lower cover
It is also possible to solve the problem that the lifting of the (electric wires) makes it difficult to cover the lower cover with another cover case such as an upper cover.

The bending preventing stopper may be removed by cutting at a hinge portion before assembling the electric connection box, or the stopper of the electric connection box may be interposed between the opposing side walls of the cover case. Assembly work may be performed.

Also, the bending prevention stopper interposed between the opposing side walls is opposite to the hinge side of the bending prevention stopper so as not to be detached before the assembling work of the electric junction box. The end of the cover case and the inner surface of the side wall of the cover case with which the end abuts may be locked by a locking structure.

[0020]

1 and 2 show a first embodiment of the present invention. Reference numeral 50 denotes a lower cover having a rectangular parallelepiped outer shape formed by injection molding a thermoplastic synthetic resin. A pair of opposed side walls 5 on the longitudinal side of the side walls 50a to 50d
A plate-shaped deflection prevention stopper 52 is formed integrally with the upper end surface of the side wall 50a of the first and second side walls 50a and 50b via a hinge 51.

The plate-like stopper 52 for preventing deflection.
Is movable in the direction of arrow A by the hinge 51. FIG.
As shown in FIG.
The end surfaces 52a and 52b on both sides in the longitudinal direction abut against the inner side surface 54 of the side wall 50b, respectively, and press the inner side surface 53 and the inner side surface 54 outward.
a, 50b are prevented from bending inward.

After molding, the stopper 52 for preventing deflection is used.
Is lowered into the lower cover 50 as described above, and the side wall 50 is
This is interposed between the inner surface 53 of FIG. 1A and the inner surface 54 of the side wall 50b, and is kept in this state before assembling the electric connection box.

When assembling the electric junction box, the stopper 52 for preventing deflection is cut at the hinge 51, and then the lower cover 50 is covered with the upper cover 60 shown in FIG. The electrical connection box is completed by engaging the lock holes 20a. Here, the illustration of the lower case, the upper case, and the like housed in the electric connection box and the work of housing them in the box are omitted.

In the above description, the stopper 52 for bending prevention was cut off before assembling the electric junction box. However, the stopper 52 for bending prevention is set in the state shown in FIG. 2. Then, the electrical connection box is completed by covering the upper cover 60 shown in FIG. 3 with the lock claw 10a of the lower cover 50 and engaging the lock hole 20a of the upper cover 60 with the upper cover 60 shown in FIG. Is also good.

FIGS. 4 to 7 show a second embodiment of the present invention. Reference numeral 70 denotes a lower cover formed by injection molding of a thermoplastic synthetic resin, and a wire harness (W /
H) is formed, and a wiring harness (W / H) is required while protecting the wire harness (W / H) from the periphery of the wiring drawing opening 71 on the outer surface of the side wall 70a. Guide part 7 for routing in the direction of
2 are protruding.

A plate-shaped deflection preventing stopper 74 is integrally formed on the upper end surface of the side wall 70b of the pair of side walls 70b and 70c facing each other on the longitudinal side of the side walls 70a to 70d via a hinge 73.

After the molding, the above-mentioned deflection preventing stopper 74 is formed.
As shown in FIG. 5, the inner side surfaces 7 of the side walls 70b and 70c
This state is maintained before the electric junction box is assembled by interposing the electric connection box between the terminals 5 and 76.

When assembling the electric junction box, first, the stopper 74 for preventing deflection is connected to the inner surfaces 75 of the side walls 70b and 70c.
76, and the state shown in FIG. 4 is obtained. Next, as shown in FIG. 6, a wire harness (W /
H) Insert the wire bundle 77a of half of 77, and attach the stopper 74 for preventing deflection to the inner surfaces 75, 76 of the side walls 70b, 70c.
While pressing the wire bundle 77a downward,
It is drawn out from the wiring leading opening 71 to the outside. Thereafter, the other half of the wire bundle 77b is inserted into the lower cover 70, and is pulled out to the outside through the wiring leading-out opening 71. Next, the electric connection box is completed by covering the lower cover 70 with the upper cover 80 shown in FIG. 7 and engaging the lock claws 10a of the lower cover 70 with the lock holes 20a of the upper cover 80. Here, the illustration of the lower case, the upper case, and the like housed in the electric connection box and the work of housing them in the box are omitted.

In the above-described embodiment, both ends in the longitudinal direction of the stopper 74 for preventing deflection are merely brought into contact with the inner side surfaces 76, 77 of the side walls 70b, 70c. However, as shown in FIG. A notch 78 may be provided at the end of the stopper 74 on the side wall 70c side, and the notch 78 may be engaged with a flexible flaky projection 79 projecting from the side wall 70c. By doing so, it is possible to prevent the deflection preventing stopper 74 from coming off from the inner side surface 76 of the side wall 70c during the wiring work of the wire harness (W / H) 77, and to perform the wiring of the wire harness (W / H). Work operability is improved.

In the above embodiment, the lower cover provided with a stopper for preventing deflection is described. However, the present invention is not limited to the lower cover, and it goes without saying that the present invention can be applied to an upper cover.

[0031]

As described above, according to the present invention,
The upper end of at least one of the opposing side walls of the electric connection box cover case made of a resin molded article and the upper cover is made of a hinge so that both ends of the upper case come into contact with the inner side surface of the opposing side wall via a hinge. Since the stopper for preventing the bending to the inside of the side wall is formed integrally therewith, after the manufacturing of the cover case by resin molding, before the assembling of the electric connection box, the stopper for the bending prevention is formed on the opposing side wall. By interposing between the inner side surfaces, the electric connection box can be assembled using a cover case having a predetermined shape without deformation.

Therefore, the electrical junction box can be assembled with good workability, and since there is no need to separately prepare a wooden member such as a wooden mold, the efficiency of manufacturing the electrical junction box can be improved. And cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a stopper for preventing deflection of a lower cover according to a first embodiment of the present invention is located outside a cover;

FIG. 2 is a perspective view illustrating a state in which a stopper for preventing deflection of the lower cover according to the first embodiment of the present invention is interposed between opposing side walls of the cover.

FIG. 3 is a perspective view showing an upper cover to be put on the lower cover shown in FIGS.

FIG. 4 is a perspective view showing a state in which a stopper for preventing deflection of a lower cover according to a second embodiment of the present invention is located outside the cover;

FIG. 5 is a top view showing a state where a stopper for preventing deflection of a lower cover according to a second embodiment of the present invention is interposed between opposed side walls of the cover.

FIG. 6 is a sectional view showing an operation of inserting a wire harness (W / H) into the lower cover shown in FIGS.

FIG. 7 is a perspective view showing an upper cover to be put on the lower cover shown in FIGS.

FIG. 8 is an enlarged view of an engagement portion between a stopper for preventing deflection of a lower cover and a side wall according to a third embodiment of the present invention. .

FIG. 9 is a perspective view showing a conventional electric junction box.

FIG. 10 is a perspective view showing a conventional electric junction box.

FIG. 11 is a top view of a lower cover in which a conventional side wall is bent inward.

[Explanation of symbols]

 Reference Signs List 50 Lower cover of electric connection box 51 Hinge 52 Deflection prevention stopper 50a to 50d Side wall 10a Lock claw 20a Lock hole 71 Wiring lead-out opening

Claims (1)

(57) [Claims] 1. A resin molding having a stopper for preventing deflection.
A cover case for an electrical junction box, comprising:OfAt the edge of one opening of the opposing side wall,
The stopper for preventing deflection is provided integrally via a flange,
TheFor bending preventionLower the stopper into the above cover case
And saidFor bending preventionThe opposite end faces of the stopper
Abut against the inner surface of the wall to regulate the inward bending of these side walls
Configuration,And, Fold the stopper for bending prevention into the cover case.
In the middle of the cover case in the length direction.
Wire from one side of the deflection prevention stopper.
Pull out the wire to the outlet and prevent the bending
Under the stopper for preventing deflection from the other side of the stopper
Pull the wire through the surface to the wire outlet above
And divide the wire path into the deflection prevention stopper.
Have the ability to For electrical junction boxes
Cover case.