JPS5916617Y2 - Building cavity closure device - Google Patents

Description

[Detailed Description of the Invention] This invention is a device for closing a cavity provided in a building, and provides an inexpensive closing device that can easily and reliably close the cavity.

In structures such as buildings, cavities are provided through the walls from the beginning of construction for air conditioning piping, electrical wiring, etc.

This cavity is provided by penetrating the steel mold manufactured in accordance with the standard, and because wiring and piping may be required after construction, it is usually made extra.

However, such extra cavities not only seriously damage the appearance of the room and disturb the air conditioning and sound insulation effects, but also cause a fire that starts in one room to spread to another room, so it is required by the Fire Service Act. It is also mandatory to cover the top with a steel plate of 1.5 mm or more.

For this reason, in the past, the cavity was filled with cement, or the first
As shown in the figure, closing plates 4, 4 that close both ends of the cavity are attached to both sides of the wall 1 using bolts 3 that pass through the cavity 2 in the wall 1.

However, if the cavity is completely filled with cement, it will be impossible to install piping and wiring again, which will be extremely inconvenient, and in the device shown in Figure 1, extremely long bolts will be required if the spacing 11 is wide. In addition, since the spacing 11 generally varies, it is necessary to prepare bolts of different lengths each time, which is extremely expensive.

Also, due to dimensional accuracy, it is necessary to use long bolts (because they are unusable if they are short), and the heads of the bolts protrude outside the wall, spoiling the appearance and atmosphere of the room.

Furthermore, installing this device in a cavity requires one worker on each side of the wall, which not only reduces work efficiency but also means that depending on the location, one worker is often in a place where no one can enter, such as in the ceiling. In such a case, installation of this device itself becomes impossible.

The purpose is to solve the problems inherent in the conventional devices for closing building cavities as described above, and the gist of this is to solve the problems inherent in the conventional devices for closing building cavities.
The object of the present invention is to provide a device for closing a building cavity in which the arms described above are attached radially, and one or more set members for pressing the arms against the inner circumferential surface of the cavity are attached to the arms. It does not require long bolts, can be easily applied to cavities of any length, is inexpensive, and can be easily and efficiently worked by one worker. Since the mounting position within the cavity can be freely selected, the bolts do not protrude beyond the wall more than necessary, making it possible to close the cavity using cap nuts etc. without damaging the appearance of the wall surface. Even if one side of the cavity is open to the ceiling or the like and work cannot be performed, the purpose is achieved by closing only one side, so any cavity can be closed, and furthermore, a cover plate can be attached in the middle of the cavity. By covering only the cavity population with cement or mortar, the mortar can be broken to open the cavity if necessary, and by temporarily filling the cavity with a wall, the appearance of the wall surface can be significantly improved. The present invention provides a device for closing building cavities that is capable of closing buildings.

Next, embodiments embodying the present invention will be described with reference to the accompanying drawings from FIG. 2 onwards to provide an understanding of the present invention.

Here, FIG. 2 is a cross-sectional view (cross-sectional view taken along the line B-B in FIG. 3) of a closure device that is an embodiment of the present invention, and FIG.
2 is a cross-sectional view taken along the line A-A in FIG. 4, FIG. 4 is a front view of the device showing the second embodiment, and FIG. 6 is a sectional view taken from the same direction as in FIG. 2 showing the third embodiment; FIG. 7 is a front view of the same device showing the fourth embodiment; FIG. 8 is a side view of the device showing the fifth embodiment, FIG. 9 is a front view of the device showing the sixth embodiment, and FIG. 10 is a side view of the device showing a special usage state.

In FIGS. 2 and 3, a closing device 5 installed in a cavity 2 of a wall 1 is attached to a bolt 6, which is a type of threaded member, disposed in the axial direction of the cavity 2, and an arm 7 attached to the bolt 6.
, 8. 9 are provided radially.

Each arm and the bolt 6 are fixed to each other by welding, screwing, or the like.

Two or more arms are required, but the arm 7' is one that splits into two in the middle, as shown by the two-dot chain line in FIG.

8' also counts as two.

A set bolt 11 facing toward the inner circumferential surface 10 of the cavity 1 is screwed onto the end of one of the arms 9.

A lock nut (not shown) may be screwed onto the set bolt 11.

Cera 1 to bolt 11 are a type of Cera 1 member.

The arm 9 to which the set bolt 11 is screwed is curved in the axial direction or the circumferential direction as shown in FIG. 2 or 4,
It is preferred that the contact point 12.13 between the other arm 7.8 and the inner circumferential surface 10 and the contact point 14 between the set bolt 11 and the inner circumferential surface 10 lie in a plane 15 perpendicular to the axis of the cavity 1. .

This means that when the set bolt 11 is tightened, the arm 7.
This is because the pressing force of the set bolt 8 and the set bolt 11 on the inner circumferential surface 10 acts perpendicularly to the inner circumferential surface 10, thereby stabilizing the attached state of the closure device 5.

For the same purpose, the bolt 11 is attached to the cella 1 as shown in the eighth figure.
The arm 9' to which it is screwed is simply bent into an L-shape, and the other arm 7.8 is also bent as shown, so that substantially each contact point 12.14 lies on one plane 15. You can.

If the arm 9 is curved in the axial direction as shown in Fig. 2,
The tool 16 such as a ratchet or spanner for rotating the set bolt 11 can be handled at the front, and the tool 16 does not interfere with the inner circumferential surface 10 of the cavity as shown in the fourth figure, so the efficiency of the installation work is high.

To cap a cavity with such a closure device, first the second
Place the device 5 in a position where the tip of the bolt 6 slightly protrudes from the cavity as shown in Figures 3 and 3, and
is tightened against the inner circumferential surface 10.

Then, the tips of the set bolts 11 bite into the inner circumferential surface 10, and each arm 7.8 is pressed against the inner circumferential surface 10, thereby fixing the closure device 5 within the cavity.

Subsequently, the cover plate 17 is attached to the bolt 6 protruding from the wall and the nut 18 is tightened, so that the cavity 2 is closed by the cover plate 17.

The other end of the cavity 2 is also closed if necessary.

The present invention is not limited to the above embodiments, but can be modified in various ways.

For example, if the diameter of the cavity is small, two arms 9, 7a may be used as shown in FIG.

In this case, the tip 18 of the arm 7a on the side where the set bolt 11 is not provided is set wide, and the arm 7a and the inner circumferential surface 10
It is desirable to maintain stable contact with the

When closing a cavity open to the room side, it is desirable to use a cap nut as the nut 18 from the viewpoint of the appearance of the wall.

Also, when the nut 18 is tightened, a force will be exerted to move the closing device 5 in the axial direction.To prevent this from shifting the closing device, the tip of the bolt 11 should be pointed as shown in the figure. This is desirable.

By forming the tip in this way, the contact position of the set bolt is fixed, and the tightening condition is stabilized.

Further, if necessary, the distal end of the other arm 7.8 may be formed into one or more pointed points 19 as shown in FIG. 5, to further stabilize the mounting state.

In addition, since the arms 9 and 7 are curved, the set bolt 1
1, the curved portion 20 of each arm bends,
Since the set bolt etc. are elastically pressed against the inner circumferential surface of the cavity, the holding force of the device will not decrease even if it is installed for a long time.

Furthermore, if the center line of the set bolt 11 does not pass through the center of the device, a moment will be generated to rotate the device as the set bolt is tightened, so it is desirable that the set bolt points toward the center of the device.

In the above embodiment, the arm is fixed to the bolt, but as shown in the sixth figure, a female screw 21 is carved in the center of the arm side,
The cover plate 17 may be fixed with a bolt 6' that is screwed into this.

In this case, the central member 22 provided with the screw 21 corresponds to the screw member.

The set bolt may be provided on only one arm, but
Furthermore, it may be attached to two or more arms.

In addition to the set bolt, the set member is made by screwing a screw member 23, which is threaded in the vertical and opposite directions as shown in FIG. Alternatively, the distance 12 between the arms 24 and 25 may be changed by rotating the arms 24 and 25, or the bolt 26 may be screwed directly into the center of the arm 27, as shown in the figure.

As described above, the present invention radially attaches two or more arms around a screw member disposed in the axial direction of a cavity, and attaches one or more set members to the arms to press the arms against the inner peripheral surface of the cavity. This is a device for closing the installed building cavity, and since it can close each side of the cavity separately, there is no need for long bolts as in the past, and it can be easily applied to cavities of any length, making it extremely effective. It is cheaper and requires less worker 1.
It is efficient because it can be easily done by humans.

Furthermore, since the mounting position within the cavity can be freely selected, the bolts do not protrude beyond the wall more than necessary, and the cavity can be closed using cap nuts, etc., without damaging the appearance of the wall surface. be.

Furthermore, even if one side of the cavity is open to the ceiling or the like and work cannot be performed, the purpose can be achieved by closing only one side, so any cavity can be closed.

Furthermore, although it is possible to install a cover plate in the middle of the cavity, by covering only the entrance of the cavity with cement or mortar, the mortar can be broken to open the cavity if necessary, and the cavity can be temporarily closed. Since it can be buried in a wall, it is possible to significantly improve the appearance of the wall surface.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional occluding device, Fig. 2 is a sectional view of an occluding device according to an embodiment of the present invention (sectional view taken along the line B-B in Fig. 3), and Fig. 3 is a sectional view of a occluding device according to an embodiment of the present invention. , A-A in Fig. 2
4 is a front view of the device showing the second embodiment, and FIG. 5 is a sectional view taken along the line CC in FIG. 4, showing a modification of the shape of the tip of the arm. , FIG. 6 is a sectional view of the third embodiment seen from the same direction as FIG. 2, FIG. 7 is a front view of the same device showing the fourth embodiment, and FIG.
FIG. 9 is a side view of the device showing the sixth embodiment, FIG. 9 is a front view of the device showing the sixth embodiment, and FIG. 10 is a side view of the device showing a special usage state. 2...Cavity, 6,21...Screw member,
7. 8.9゜7 a, 24.25.27...
・Arm, 10...Inner peripheral surface, 11゜23, 26
...Set parts.

Claims (1)

[Claims for Utility Model Registration] 1. Two or more arms are attached radially around a screw member disposed in the axial direction of the cavity, and one or more set members for pressing the arms against the inner peripheral surface of the cavity are attached to the arm. A building cavity closing device installed in a building. 2. The closing device according to claim 1, wherein the setting member is a set bolt. 3. The closing device according to claim 2, wherein the set bolt is screwed onto the arm so as to face toward the center of the device. 4. The closing device according to claim 2, wherein the set bolt is a pointed bolt. 5. The closure device according to claim 1 or 2 of the utility model registration claim, in which the tip of the arm is sharpened. 6. The closure device according to claim 2, wherein the arm to which the set bolt is attached is curved in the axial direction or circumferential direction.