JP2001053458A - Pull box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pull box which prevents rain water which flows down along a side plate from sneaking to the bottom plate of the box body and also the box body from corroding, beginning with the bottom plate. SOLUTION: This box is composed of a top face-open box body 1, having side plates 4b, 4d erected at the peripheral edges of a square bottom plate 3 and a waterproof cover 2, and the skirts of the side plates 4b, 4d constituting the box body 1 extend down from tie-in parts with the bottom plate 3 form skirts 41. The skirts 41 block rain water from penetrating into the bottom plate 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a waterproof pull box installed outdoors.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show the structure of a conventional pull box.
And a waterproof cover 11 fitted into the upper opening of the box body 10.
0, a steel plate is punched out to form a square bottom plate 12 and side plates 13a, 13b, 13c, 13d so as to be continuous with each peripheral portion of the bottom plate 12, as shown in FIG.
Each of the side plates 13a, 13b, 13c and 13d is bent so as to be orthogonal to the bottom plate 12, and each corner is fixed by spot welding or the like. Naturally, each peripheral portion of the bottom plate 12 and the side plates 13a and 13b are fixed. , 13c and 13d are at the same level.

The side plates 13a, 13b, 13c, 13
The upper end portion of the box body 1 is bent inward to form a screw receiving portion 14. A set screw 15 is screwed in from the upper surface of the waterproof cover 11 via rubber packing as appropriate.
The waterproof cover 11 can be fixed to the upper surface of the “0”.

[0004]

As described above, in the conventional pull box, each peripheral portion of the bottom plate 12 in the box body 10 and the side plates 13a, 13b, 13c,
The lower ends of 13d form the same level.

[0005] Therefore, during rainfall, the rainwater transmitted through the side plates 13a to 13d of the pull box installed and installed outdoors goes around the bottom plate 12 of the box body 10 from near the lower end and corrodes the bottom plate 12 with time. There was a problem. In particular, the bottom plate portion is less exposed to sunlight than the upper and side portions of the box body 10 and is harder to dry, so that corrosion becomes remarkable.

Therefore, the present invention solves the above-mentioned drawbacks of the conventional pull box, prevents rainwater flowing down the side plate from flowing to the bottom plate side of the box body, and causes the box body to corrode around the bottom plate. An object of the present invention is to provide a pull box in which the pull box is effectively prevented from being damaged and the durability is dramatically improved.

[0007]

In order to achieve the above object, the construction of the present invention will be described in detail. A box having an opening on the upper surface formed by arranging side plates on each peripheral edge of a rectangular bottom plate. In a waterproof pull box composed of a main body and a waterproof cover attached to an upper opening of the box main body,
A skirt portion is formed by extending a skirt portion of the side plate constituting the box body downward from an engagement portion with the bottom plate to form a skirt portion, and the skirt portion prevents rainwater from flowing to the bottom plate side. A pull box characterized by the following.

According to the present invention, since the skirt portion of a required length is formed at the skirt portion of the side plate downward from the portion fixed to the bottom plate, rainwater transmitted through the side plate is guided by the skirt portion and downward. Since it does not drop and wrap around in the direction of the bottom plate, the bottom plate portion of the box body can be kept in a dry state, and the durability of the entire pull box can be greatly improved.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a pull box according to the present invention.
FIG. 1 is a cross-sectional view showing one embodiment of the pull box according to the present invention, and FIG. 2 is an explanatory view showing an example of a manufacturing process of the pull box shown in FIG.

In the figure, reference numeral 1 denotes a box body having an upper surface opened.
Reference numeral 2 denotes a waterproof cover which is detachably fitted to the upper surface opening of the box body 1. The box body 1 has a square bottom plate 3 and side plates 4 erected on each peripheral portion of the bottom plate 3.
a, 4b, 4c, and 4d.
The upper ends of 4b, 4c and 4d are bent inward to form screw receiving portions 5. A common through-hole is formed in a predetermined portion of the screw receiving portion 5 and the waterproof cover 2, and a set screw 7 is screwed from the upper surface of the waterproof cover 2 through a rubber packing 6 as appropriate, thereby forming an upper surface of the box body 1. Waterproof cover 2
Can be fixed.

In such a waterproof pull box, the present invention provides side plates 4a, 4a constituting the box body 1.
The skirts 41 are formed by extending the bottoms of b, 4c, and 4d downward from the joint with the bottom plate 3, that is, the joint or fixing portion between the side plate and the bottom plate. The length of the skirt portion 41 is enough to prevent rainwater flowing down the side plate portion from flowing down to the bottom plate 3 side, and may be shorter than that shown in the figure. Of course.

The skirts 41 of the side plates 4a, 4b, 4c, 4d are extended downward from the connection with the bottom plate 3 so as to extend downward.
For example, as shown in FIG. 2, a steel plate is punched to form a bottom plate member 3A and a side plate member 4A, and the bottom plate member 3A is formed by bending the bent pieces 31 formed at both ends downward. To form a substantially U-shape.

On the other hand, the side plate member 4A is sequentially bent along a dotted line shown in the figure, and a tongue piece 4e connected to one side of the side plate 4a is spot-welded to the side edge of the other side plate 4d by spot welding or the like. A fixed frame-shaped side plate member is formed, and the U-shaped bottom plate member 3A is inserted into the side plate member so as to be located slightly above the lower end of the side plate member 4A. The bent piece 31 and the inner peripheral surface of each side plate are fixed by spot welding or the like.

In addition, although not particularly shown, bent pieces are continuously connected to the respective peripheral edges of the rectangular bottom plate member, and the bent pieces and the inner peripheral surface of the side plate are fixed by spot welding or the like. It may be.

Further, as shown in FIG. 4, a side plate is formed so as to be continuous with each peripheral portion of the bottom plate, and the side plate is once bent slightly downward and then further upward to form a double structure. The skirt portion may be formed. Further, the skirt portion may be retrofitted to the lower surface of the side plate portion of the conventional pull box shown in FIG. 3 by welding or the like. The shape or the method of forming the skirt portion can be arbitrarily changed as long as it can be prevented from dropping downward along the skirt portion and wrapping around the bottom plate side, and the contents of the change are also included in the present invention. It goes without saying that it is included in the range.

[0016]

According to the present invention, during rainfall, rainwater flowing down the side plate is guided by the skirt portion and drops downward, so that it is possible to effectively prevent rainwater from flowing into the bottom plate side of the box body. Thus, the box body can be prevented from being corroded around the bottom plate, and the durability can be remarkably improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of a pull box according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a manufacturing process of the pull box shown in FIG.

FIG. 3 is a sectional view showing an example of a conventional pull box.

FIG. 4 is a development view showing an example of a conventional pull box.

[Explanation of symbols]

 1: Box body 2: Waterproof cover 3: Bottom plate 4a: Side plate 4b: Side plate 4c: Side plate 4d: Side plate 4e: Tongue piece 5: Screw receiving part 6: Rubber packing 7: Set screw 41: Skirt part 3A: Bottom plate member 4A: Side plate member 31: bent piece

Claims (1)

[Claims] 1. A waterproof body comprising: a box body having an upper surface opened with side plates erected at each peripheral edge of a rectangular bottom plate; and a waterproof cover attached to the upper surface opening of the box body. In the mold pull box, a skirt portion is formed by extending a skirt portion of the side plate constituting the box body downward from an engagement portion with the bottom plate to form a skirt portion, and the skirt portion prevents rainwater from flowing to the bottom plate side. A pull box characterized by doing so.