JPH0213109B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention is provided on the floor of a building and serves as an entrance/exit or inspection port to the underfloor area when periodically inspecting or repairing various types of piping, wiring, etc. arranged under the floor. This invention relates to a structure for attaching an outer frame to a floor inspection port.

Conventionally, as a structure for attaching a floor inspection port or other underfloor equipment to a floor opening, a panel-shaped support frame having an opening is erected on the bottom side of the floor opening with a plurality of support legs, and the support frame is attached to the support frame. There is a device that hangs the flange of an underfloor device or the like, or has a floor inspection port installed (Japanese Utility Model Publication No. 110659/1983).

However, in this conventional mounting structure, a panel-shaped support frame larger than the opening is installed at the bottom of the floor opening, so it is difficult to install it unless it is completed earlier than or at the same time as finishing the floor surface. However, the construction was troublesome. In addition, since the size of the support frame must correspond to the size of the various floor inspection holes to which it is attached, panel-shaped support frames of various shapes must be prepared, which increases costs. Furthermore, since the panel-shaped support frame is erected and supported by four or more support legs, the support frame may tilt due to unbalanced loads, causing the other side to lift up and cause wobbling, or cause the frame to become unstable with the floor. It was easy for pedestrians to create steps between the two, creating dangers such as pedestrians tripping and falling.

In view of this, the present invention provides a floor opening having a substantially rectangular shape in a floor laid at an appropriate height from the floor base, and fitting an outer frame having a substantially rectangular shape into the floor opening. At the same time, in the structure of the attachment part of the outer frame of the floor inspection opening in which the lid body is removably attached to the outer frame, the height can be adjusted with respect to the base installed at the floor base at the four corners of the floor opening. A support rod is mounted on the upper end of the support rod, and a movable sleeve having a threaded portion is screwed onto the upper end of the support rod. A supporting piece having a rising part attached and fixed to the peripheral wall near the corner of the floor opening is mounted with its receiving plate part positioned higher than the upper end of the movable sleeve, and the rising part of the supporting piece is attached to the peripheral wall of the floor opening. The present invention provides a structure for mounting an outer frame in a floor inspection port, which can solve the various problems of the prior art as described above all at once by being fixed to the peripheral wall.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

1 to 4 show a structure for attaching an outer frame to a floor inspection port according to a first embodiment of the present invention.

As is clear from Fig. 1, this mounting structure is such that the outer frame of the floor inspection hole that is inserted into the floor opening is placed and fixed on support pieces 7 arranged at the four corners indicated by dotted lines. The details of the outer frame attachment structure at one corner are described below. In this installation structure, a floor 2 consisting of a subfloor material 13 and a floor finishing material 14 is laid above a floor base 1 at an appropriate height from the floor base 1, and a substantially rectangular floor is laid on this floor 2. opening 3
The surrounding wall 4 of this floor opening 3 is finished to be a substantially vertical wall surface, and at the four corners of the floor opening 3, a base 6 installed in the floor base 1 is vertically movably erected, and the upper end thereof is A support rod 5 to which a movable sleeve 18 having a threaded portion 15 is screwed is disposed, and an outer frame 10 constituting a floor inspection hole fitted into the floor opening 3 is disposed at the upper end of the support rod 5. A support piece 7 is provided which has a receiving plate part 8 on which the four corners of the support plate 8 are fitted and placed, and a substantially vertical rising part 9 which is attached and fixed to the peripheral wall 4 of the floor opening 3,
The receiving plate part 8 is installed at a position higher than the movable sleeve 18, and by rotating the movable sleeve 18 and moving the support rod 5 up and down, the mounting position of the support piece 7 can be adjusted and supported. The rising part 9 of the piece 7 is attached to the peripheral wall 4 of the floor opening 3 and fixed with the fasteners 12, and the four corners of the outer frame 10 are placed on the receiving plate part 8 to form the upper end surface 10a of the outer frame 10. Upper end surface 2a of floor 2
The outer frame 10 and the receiving plate part 8 are fixed to each other by fasteners 11, with the outer frame 10 and the receiving plate part 8 being substantially coplanar.

The support rods 5, which are arranged at the four corners of the floor opening 3 and installed and erected on the floor base 1, are shown in FIGS. 2 to 4.
As shown in the figure, it is composed of a bolt having male threaded portions 15 carved in opposite directions at both ends, and a sleeve 16 provided on the upper surface side of the base plate 6 is screwed into the male threaded portion 15 at the lower end. Further, the movable sleeve 1 has a collar portion 17 on the male threaded portion 15 at the upper end thereof.
8 is screwed on, and the support piece 7 is screwed on the upper surface of the flange 17 of this movable sleeve 18.

Further, a slotted groove 19 is formed on the upper end surface of the support rod 5, and by inserting a screwdriver or the like into this slotted groove 19 and rotating the support rod 5, the movable sleeve 18 is rotated. Support piece 7
The mounting position can be adjusted. Note that this support rod 5 is stably installed on the floor base 1 by means of a base 6 provided at its lower end.

Further, in this first embodiment, the support piece 7
The upper end of the movable sleeve 18 is located at the center of the receiving plate portion 8.
The recess 21 is absorbed so that it does not protrude higher than the
and a substantially triangular base plate 22 having receiving plate portions 8 on both sides of which the corner portions of the outer frame 10 are placed and fixed; and a supporting metal fitting 23 having the above-mentioned rising portion 9 which is fixed by the contact piece 12, and the connecting portion 24 of this supporting metal fitting 23 is connected between the upper surface of the receiving plate portion 8 of the substrate 22 and the lower surface of the corner of the outer frame 10. It is designed to be held in place by a fastener 11 that passes through these parts.

The outer frame 10, which is fitted and fixed in the floor opening 3 by the support pieces 7, has four frame pieces 25 each having an L-shaped cross section, and is formed into a rectangular shape by connecting the four frame pieces 25, each having an L-shaped cross section, with corner fittings 26 having a substantially L-shape. A dovetail groove 28 is formed along the longitudinal direction on the upper surface of the inward projecting edge 27 formed at the lower end, and a cover body 29 of the floor inspection port is placed within this dovetail groove 28. A cushioning material 31 is fitted to airtightly close the space between the inner frame 30 and the inner frame 30 .

Therefore, according to this first embodiment, the outer frame 1
0, first, a floor opening 3 is opened in the floor 2 to match the size of the outer frame 10, and pieces of angle material are installed at the four corners of the peripheral wall 4 of this floor opening 3. A support fitting 2 that is formed to constitute a support piece 7
At the same time, as shown in FIG. A total of four pieces are attached, one on each side, and on the four corners of the floor opening 3, below the supporting metal fittings 23 attached to the four corners of the surrounding wall,
By disposing the support rod 5 and inserting a screwdriver or the like into the slotted groove 19 formed on the upper end surface of the support rod 5, the support rod 5 is rotated and the movable sleeve 18 is moved. moving the receiving plate part 8 provided at the upper end and forming the support piece 7 upward;
This receiving plate part 8 is brought into close contact with the lower surface side of the connecting part 24 of the support fitting 23, and then the outer frame 10 is placed inside the floor opening 3.
The corner portions of the inward projecting edges 27 are placed on the upper surface of the connecting portion 24, and the outward projecting edges 27 of the outer frame 10, the connecting portions 24 of the support fittings 23, and the receivers of the substrates 22 are connected. The plate portion 8 is integrally connected and fixed with a fastener 11.

Note that the procedure for installing the outer frame 10 is not limited to the above case; for example, the procedure for installing the outer frame 10 is
Each support rod 5 is arranged at each of the four corners of the peripheral wall of
The board 22, the support fittings 23 and the outer frame 1
0 temporarily, and in this state, connect the board 2.
2 up and down to connect the upper end surface 10a of the outer frame 10 and the floor 2.
Adjust the top surface 2a to be substantially the same plane, then remove the outer frame 10 and remove the rising part 9 of the support fitting 23.
is fixed to the peripheral wall 4 of the floor opening 3 with fasteners 12, and then the outer frame 10 is fitted into the floor opening 3 again, and the connection portion 24 between the inwardly directed rim 27 of this outer frame 10 and the support fitting 23 is fixed. and the receiving plate portion 8 of the substrate 22 may be integrally connected and fixed by the fastener 11.

Next, the attachment structure of the outer frame of the second embodiment shown in FIGS. 5 and 6 is different from that of the first embodiment, in that the support piece 7 is formed by bending a single plate. A movable sleeve 18 is provided on the lower surface side of the center of the receiving plate portion 8 formed in a substantially triangular shape to be screwed into a male screw portion 15 formed at the upper end of the support rod 5, and the movable sleeves 18 are located in directions substantially orthogonal to each other. A pair of rising portions 9 are formed on the upper surface side of the pair of edge portions.

According to this second embodiment, when installing the outer frame 10, the support piece 7 is screwed onto the male threaded portion 15 at the upper end of the support rod 5 in advance, and in this state, the support rod 5 is inserted into the floor opening 3. Then, the outer frame 10 is fitted in the floor opening 3, and the outer frame 10 is placed on the upper surface of the receiving plate part 8 of the support piece 7, and the slot formed on the upper end surface of the support rod 5 is placed on the upper surface of the support rod 5. By inserting a screwdriver or the like into the groove 19 and rotating the support rod 5, the upper end surface 10a of the outer frame 10 is adjusted to be approximately flush with the upper surface 2a of the floor 2. Temporarily remove the support piece 7 and fix the rising part 9 of the support piece 7 to the peripheral wall 4 of the floor opening 3 with the fastener 12, and then attach the auxiliary metal fittings 32 as shown in FIG. , fit the outer frame 10 into the floor opening 3 again, and connect the outward projecting edge 27 of the outer frame 10 and the receiving plate portion 8 of the support piece 7.
A fastener 11 is used to secure the space between the two.

In this second embodiment, the floor 2 laid above the floor base 1 is supported by a floor support device equipped with a cushion body (not shown), like the floor of a gymnasium, for example. When a large impact load is applied to the upper surface 2a, the upper surface 2a is elastically displaced by a predetermined amount so as to be able to absorb it. A cushion body 20 is provided which has the same shock absorbing properties as the cushion body of the support device or the shock absorbing properties of this cushion body, so that when the floor 2 around the floor inspection opening is elastically displaced due to impact etc. floor 2
The elastic displacement amount is absorbed by the cushion body 20,
As a result, the floor inspection port is elastically displaced following the elastic displacement of the floor 2.

In each of the above embodiments, the outer frame 10 is provided with an outward projecting edge at the upper end to form a space between the outer frame 10 and the peripheral wall 4 of the floor opening 3. Even if some movement occurs between the floor base material 13 and the floor finishing material 14 in the peripheral wall 4 when opening the floor opening 3, the rising part 9 of the support piece 7 is tilted according to the movement in and out of the peripheral wall 4. This can be absorbed by the support piece 7 alone and the support piece 7 can be reliably attached to the peripheral wall 4.

In each of the embodiments described above, the male threaded portions 15 are formed at both the upper and lower ends of the support rod 5, and the sleeves 16 and movable sleeves 18 that are screwed into these male threaded portions 15 are provided on both the base 6 and the support piece 7. The mounting position of the support piece 7 is adjusted by vertical movement of these sleeves 16 and movable sleeve 18, that is, by vertical movement of the support rod 5. However, it is not possible to adjust the mounting position of the support piece 7. However, it is of course not limited to this. Furthermore, the support pieces 7 are not limited to those in each of the above-mentioned embodiments; for example, a pair of support pieces 7 provided at the upper ends of the support rods 5 each extend along the edge of the peripheral wall 4 of the floor opening 3. The auxiliary fitting 32 attached to the edge of the peripheral wall 4 may be omitted by providing a wing piece.

Further, in the case where the support plate part 8 of the support piece 7 or this support piece 7 is composed of the base plate 22 and the support metal fitting 23, a fastening hole is provided in the connection part 24 of the support plate part 8 of the base plate 22 and the support metal fitting 23. The fastener insertion hole of the child 11 may be formed into a long hole so that the rising portion 9 of the support piece 7 can be easily brought into close contact with the peripheral wall 4 of the floor opening 3, or the inwardly facing part of the outer frame 10 may be It may be possible to easily align the fastener insertion hole with the fastener insertion hole drilled in the projecting edge 27.

As described above, the structure of the attachment part of the outer frame in the floor inspection port according to the present invention is such that a floor opening is opened in the floor laid above the floor base at an appropriate height from the floor base, and the floor opening is At the four corners, support pieces each having a receiving plate part on which the four corners of the outer frame of the floor inspection port to be fitted into the floor opening are placed and fixed, and a rising part which is attached and fixed to the four corner walls of the floor opening, A support rod that is held in a height-adjustable manner with respect to a floor base and has a threaded movable sleeve at its upper end is installed upright, and the receiving plate is positioned higher than the upper end of the movable sleeve. Since the upper end surface of the outer frame of the inspection port and the top surface of the floor are adjusted to be flush with each other, there is no need to use a rectangular support frame on the bottom surface of the floor opening. By attaching and fixing the rising parts of each support piece, it is possible to easily perform the installation work from above the floor opening even after the floor surface is finished, and it is common regardless of the size of the floor opening. Moreover, since there is no support frame below the floor opening, the space under the floor can be widely used.

In addition, since the four corners of the outer frame are supported in a height-adjustable manner, even if the height of the floor base differs from the floor surface, or there are dimensional errors, they will be absorbed and In addition, even if an uneven load is applied to the floor inspection port, each support piece and support rod respond independently, so the other support rod will not lift up and wobble. It is firmly fixed to the four corners of the floor opening without worrying about it sticking, and there is no difference in level from the top of the floor.
Furthermore, even if a difference in level occurs in a portion, it can be easily repaired by readjusting the position of the support piece at each location.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the installation state of a floor inspection port to which the mounting structure according to the first embodiment of the present invention is applied, Fig. 2 is a sectional view taken along the line - - of Fig. 1, and Fig. 3 is a support rod. FIG. 4 is a plan view showing the substrate of the support piece in FIG. 3, and FIG. 5 is a floor inspection opening to which the mounting structure of the second embodiment is applied. Fig. 6 is a sectional view similar to Fig. 2 showing the mounting state of the
It is a perspective view similar to the figure. 1... Floor base, 2... Floor, 2a... Upper surface of floor,
3... Floor opening, 4... Peripheral wall, 5... Support rod, 6...
. . . Base, 7 . . . Support piece, 8 . . . Receiver plate portion, 9 .

Claims (1)

[Scope of Claims] 1. A substantially rectangular floor opening is opened in a floor laid at an appropriate height from the floor base, and a substantially rectangular outer frame is fitted into the floor opening. , in the structure of the attachment part of the outer frame of the floor inspection opening in which the lid body is removably installed in the outer frame, and is held in a height-adjustable manner with respect to the base installed at the floor base at the four corners of the floor opening. A support rod is provided with a movable sleeve screwed onto the upper end thereof, and the movable sleeve at the upper end of the support rod has a receiving plate portion on which the lower surface of the corner of the outer frame is placed and fixed, and a floor opening. A support piece having a rising part attached and fixed to the peripheral wall near the corner of the movable sleeve is mounted with its receiving plate part positioned higher than the upper end of the movable sleeve, and the rising part of the support piece is attached to the peripheral wall of the floor opening. A structure for attaching an outer frame of a floor inspection port, which is fixed.