JP2558170Y2 - Hole closure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an obturator for closing a hole that has been opened in a ceiling wall or other wall surface in building construction or the like, but is no longer required.

[0002]

2. Description of the Related Art When a hole provided in a wall surface is no longer required, a plate piece larger than the hole is hitherto, nailed and held with an adhesive or an adhesive tape, or an appropriate means. It is general to close with a closing device.

[0003]

In the above-mentioned conventional means, when closing by hitting a plate piece, the holding means of the plate piece is troublesome, the appearance after blocking is unsightly, and after a certain period of time,
There is a drawback that the retainer is loosened and falls inadvertently, and the conventional obturator requires operation on both sides of the wall surface at the time of its use, and thus there is an inconvenience particularly in closing the hole in the ceiling surface.

[0004]

SUMMARY OF THE INVENTION The present invention eliminates the disadvantages of the above-mentioned conventional means, and provides an obturator which can be easily operated by operating only one surface of the wall when closing an unnecessary hole in the wall.
In particular, it facilitates work on the ceiling surface. A large-sized closing plate larger than the hole to be closed is loosely fitted to a bolt of an appropriate length having a large-diameter head at one end so as to be movable in the axial direction. A rectangular support piece made of an elastic metal material having a width smaller than a hole to be closed and longer than the hole is screwed into the support piece, and a claw piece is projected from the back surface of the support piece.

[0005]

The hole closing device according to the present invention, as shown in the embodiment of FIGS. 2 to 4, starts from one surface (lower surface in the illustrated example) of the wall a having the hole b to be closed, as shown by the solid line in FIG. As shown in the figure, both ends of the elastic support piece 4 screwed to the bolt 1 are bent downward by hand as shown by an arrow x so that the support piece 4 is inserted into the hole b. As shown in the drawing, the support piece 4 is returned to its original shape by elasticity by projecting it to the other surface of the wall a through the hole b and released, and the obturator is held on the wall surface by the support piece 4 as shown by a solid line in FIG. Is done. Then
When the bolt 1 is urged by hand from this state in the direction of pulling down, the claw 5 on the back surface of the support piece 4 is pressed against the wall a surface,
Therefore, the support piece 4 is prevented from rotating by the engagement of the claw piece 5, so if the bolt 1 screwed through the support piece 4 is continuously rotated while being urged downward, the bolt 1 will be in FIG. As shown by the tentative line, the screw moves upward with respect to the support piece 4, and the closing plate 3 held by the head 2 also moves upward, and finally the closing plate 3 comes into contact with the lower surface of the wall a. At this time, the support piece 4 is elastically pressed against the upper surface of the wall a, and the closing plate 3 is securely pressed against the lower surface of the wall a via the bolt 1 to seal the hole b. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hole closing device according to the present invention will be described with reference to FIG. Reference numeral 1 denotes a bolt of an appropriate length having a large-diameter head 2 at one end, and a closing plate 3 was loosely inserted into the bolt 1 so as not to come off with the head.

The closing plate 3 is not limited to the circular plate shown in the figure, but may have any shape, and is at least larger than the hole b on the wall a which needs to be closed.

Reference numeral 4 denotes a support piece made of an elastic metal material. The support piece is formed in a rectangular shape having a width smaller than that of the hole b that requires closing of the wall a and a diameter larger than the diameter of the hole b. A sharp claw piece 5 having a sharp tip formed by such punching was protruded, and an intermediate portion of the support piece 4 was screwed and connected to the bolt 1.

In the illustrated example, a nut or a helical boss piece 5a is integrally attached to an intermediate portion of the support piece 4,
The nut or the boss piece 5b is shown as being screwed into the bolt 1 and the support piece 4 has bending portions 5a on both sides of the screwed portion.
Was formed to facilitate downward bending.

The hole closing device constructed as described above, as described in the above operation, bends the outer sides of the both-side bent portions 5a of the support piece 4 downward by hand to form the holes b on the wall a surface. After projecting from the upper surface to the other surface, the original shape is automatically restored by elasticity, the hole b is straddled and held on the wall a surface, and the claw pieces 5 projecting to the lower surface
By rotating the bolt 1 in a state where it is locked so as not to rotate, the opening and closing plate 3 is pressed against the hole b so as to close the hole b, and the hole b is closed.

[0011]

[Effect of the Invention] The hole closing device according to the present invention can close the hole only by screwing the bolt in a state where a part of the support piece is inserted from one side of the wall surface having the hole that needs to be closed,
The handling operation is extremely simple, and the plate with the hole closed is pressed against the wall surface by the elasticity of the support piece to ensure the sealing of the hole, and has such effects that the attachment is robust without being loosened.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a hole closing device according to the present invention.

FIG. 2 is a cutaway side view showing the first stage of the hole closing operation.

FIG. 3 is a side view showing an operation state of a second stage.

FIG. 4 is a side view of a closed state.

[Explanation of symbols]

 Reference Signs List 1 bolt 2 large diameter head 3 closing plate 4 support piece 5 claw piece a wall b hole

Claims (1)

(57) [Scope of request for utility model registration] A large-sized closing plate having a larger diameter than a hole to be closed is loosely fitted in a bolt having an end having a large diameter at one end so as to be movable in the axial direction. A hole closing device formed by screwing a rectangular support piece made of an elastic metal material having a small width and longer than a hole and projecting a claw piece on the back surface of the support piece.