JPS6226380B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for mounting a floor opening frame in which an outer frame for a floor inspection port or underfloor storage for home or gymnasium use is mounted within the floor opening.

Conventionally, the mounting structure for this type of floor opening frame was to attach a wooden frame to the lower side of the edge of the floor opening in the floor, or to attach an L-shaped bracket to the edge of the opening. There is one in which a stepped portion is formed at the edge of the opening, and the outer frame is placed and fixed by a fitting device on the stepped portion.

In any of these methods, the work of installing the outer frame consists of the work of fixing the support member of the outer frame, which is performed before the work of installing the outer frame, and the work of attaching it to this support member, In order to accurately mount the outer frame at a predetermined height, for example, in a position where its upper end surface is flush with the floor, it is necessary to back-calculate the installation height of the support member from the height of the outer frame, etc. Therefore, it is necessary to accurately fix this support member.

However, in this case, even if the supporting member is fixed by accurately leveling the upper surface of the floor, if the outer frame is actually mounted on the supporting member, manufacturing errors in the outer frame itself or Taking the above-mentioned case as an example, since the outer frame is not installed at a predetermined height due to installation errors of members, etc., there are problems such as a difference in level between the upper end surface of the outer frame and the floor surface.

The present invention was made in view of the fact that such problems based on conventional structures are caused by the fact that the outer frame installation work is not done by actually matching the outer frame and the support member. It is an object of the present invention to provide a mounting structure for a floor opening frame that allows the outer frame to be easily and accurately installed in a predetermined position by allowing the installation work to be performed in an adjustable and integrated state. do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

1 and 2 show a mounting structure for a floor opening frame according to a first embodiment of the present invention.
The installation structure of this floor opening frame is such that a rectangular floor opening 2 is opened in a floor 1 laid above a floor base at an appropriate distance from the floor base, and a peripheral wall 3 at the opening edge of this floor opening 2 is opened. On the other hand, the outer frame 4 to be fitted into the floor opening 2 is finished with a substantially vertical rising part 5.
A lid support portion 6 protrudes inward from the lower end of the rising portion 5 in a substantially horizontal manner and supports the lid 8.
The outer frame is formed into a rectangular frame member having an outward flange portion 7 that projects outward from the upper end of the rising portion 5 in a substantially horizontal manner and that engages with the upper surface of the opening edge of the floor opening 2. On the outside of 4, there is a substantially horizontal horizontal portion 11 formed with a substantially L-shaped cross section and fixed to the lower surface side of the lid support portion 6 with a fastener 9, and the rising portion 5.
A mounting bracket 10 having a substantially vertical vertical portion 12 facing the mounting bracket 10 is attached, and at least a fastener 13 passes through the rising portion 5 of the outer frame 4 at a position facing the vertical portion 12 of the mounting bracket 10. A comparatively large through hole 14 is bored in the vertical section 12, and a fastener insertion hole 15 is bored at a position corresponding to the through hole 14 on the side of the vertical section 12. The vertical portion 12 of the mounting bracket 10 is fixed to the opening edge peripheral wall 3 of the floor opening 2 by the fastener 13 inserted into the fastener insertion hole 15 of the floor opening 2.

In this embodiment, a groove 16 is formed in the lid support part 6 of the outer frame 4 along its longitudinal direction, and a groove 16 is formed in the groove 16 to accommodate the outer frame 4 and the outer frame 4. A buffer body 17 is fitted to airtightly close the space between the cover body 8 and the cover body 8. In addition, the groove 16
Fastener insertion holes 18 are bored at appropriate intervals in the bottom wall of the mounting bracket 10, while the horizontal part 1 of the mounting bracket 10
1 has elongated holes 19 extending in the width direction of the horizontal portion 11 at the same intervals as the fastener insertion holes 18, and the fasteners 9 allow the mounting bracket 10 to be attached to the outside of the outer frame 4. It is attached along the elongated hole 19 so that its position can be adjusted in the front-back or left-right direction. moreover,
In this embodiment, the mounting fittings 10 are formed to have approximately the same length as each side of the outer frame 4, and four mounting fittings 10 are attached along each side of the outer frame 4. Note that, as for the mounting fitting 10, a piece-shaped fitting as shown in a second embodiment described later can also be used.

Therefore, according to the mounting structure of the floor opening frame of the first embodiment, first, four mounting fittings 10 are attached to the outside of the rectangular outer frame 4 along each side thereof with fasteners 9. This outer frame 4 is fitted into the floor opening 2, and the outward flange portion 7 of the outer frame 4 is inserted into the floor opening 2.
The vertical part 12 is brought into close contact with the opening edge peripheral wall 3 of the floor opening 2 by moving the mounting bracket 10 along the elongated hole 19 bored in the horizontal part 11 of the floor opening 2. At that position, the fastener 9 is tightened to secure the mounting bracket 10 to the outer frame 4. Thereafter, a fastener 13 was drilled in the vertical portion 12 of the mounting bracket 10 through the through hole 14 drilled in the rising portion 5 of the outer frame 4 at the position where the outward flange portion 7 was temporarily fixed by locking. Insert into the fastener insertion hole 15,
Drive the fastener 13 into the opening edge peripheral wall 3 of the floor opening 2 using a screwdriver or the like, and then attach the mounting bracket 10 to the floor opening 2.
The buffer member 17 is fixed to the opening edge of the outer frame 4 and is fitted into the groove 16 of the lid support portion 6 of the outer frame 4. In addition, the outer frame 4
A plug (not shown) made of an elastic material or the like is fitted into the through hole 14 drilled in the rising portion 5 of the floor 1 to airtightly shield the space between the upper surface side and the lower surface side of the floor 1. You can also do it.

Next, the mounting structure of the floor opening frame of the second embodiment shown in FIGS. 3 to 5 is different from that of the first embodiment, in which each frame member of the outer frame 4 has a substantially L-shaped cross section. The upper end of the rising portion 5 is provided with an outward flange 20 that is finished approximately flush with the upper surface of the floor 1, and this outer frame 4 has upper and lower edges installed on the lower surface side of the four corners. Support legs 2 with adjustable orientation
1 is supported in the floor opening 2, and an appropriate number of mounting brackets 10 formed in relatively short pieces are attached to the outside of each side of the outer frame 4, and each of these mounting brackets 10 Each side of the outer frame 4 is fixed to the opening edge of the floor opening 2 by the screws.

Further, the vertical part 12 of the mounting bracket 10 is provided with an inclined surface 22 formed by cutting a part of the vertical part 12, and a fastener is inserted into this inclined surface 22 in a direction diagonally downward according to the inclination. A hole 15 is bored. The floor 1 to which the vertical part 12 of the mounting bracket 10 is fixed is made up of a base material 23 and a finishing material 24 laid on top of the base material 23, and the fastener inserted through the fastener insertion hole 15. The child 13 is reliably driven into the base material 23 diagonally downward.

According to the floor opening frame mounting structure of the second embodiment, an appropriate number of mounting brackets 10 are temporarily fixed to the outside of each side of the framed outer frame 4 using fasteners 9,
Support stands 21 are arranged at the four corners of the floor opening 2, and the outer frame 4 fitted in the floor opening 2 is installed on each of these support stands 21.
After fixing the upper end, each support stand 21 is adjusted in the vertical position so that the outward protruding edge 20 of the outer frame 4 and the floor 1 are approximately on the same plane, and then the vertical part 12 of each mounting bracket 10 is fixed.
are brought into close contact with the peripheral wall 3 of the opening edge of the floor opening 2, and each mounting bracket 10 is fixed to the outer frame 4.
3, connect the vertical part 12 of the mounting bracket 10 to the floor opening 2.
It is fixed to the peripheral wall 3 of the opening edge.

Therefore, according to this second embodiment, the outer frame 4 is supported at its four corners by the support legs 21, and each side is supported by an appropriate number of mounting brackets 10 attached to the opening of the floor opening 2. A fastener 13 that is fixed to the edge peripheral wall 3 and also fixes the vertical portion 12 of each mounting bracket 10 to the opening edge peripheral wall 3 is inserted into a fastener insertion hole 15 formed in the vertical portion 12 and facing diagonally downward. Since it is guided and driven diagonally downward and reliably driven into the base material 23 of the floor 1, the mounting strength of the outer frame 4 is significantly improved.

Further, FIG. 6 shows a modification of the mounting bracket 10 used in the second embodiment, in which a thick wall portion is formed in a part of the vertical portion 12 and the inclined surface 2 is
2 and is provided with a fastener insertion hole 15 facing diagonally downward.The rigidity of the vertical portion 12 is high, and the floor 1 has elasticity, such as the floor of a gymnasium, and each support leg This is particularly useful when a cushion material (not shown) is provided at the lower end of the mounting bracket 21 to cause the outer frame 4 to follow the elasticity of the floor 1, since a large impact will be applied to the mounting bracket 10.

In addition, in the second embodiment described above, the mounting bracket 1
Although a piece-shaped piece is used as the opening 0, a long piece as shown in the first embodiment can also be used.Furthermore, support legs 21 are provided at the four corners of the floor opening 2 to support the outer frame 4. , but this is not necessarily necessary.

In addition, as a procedure for installation in each of the above embodiments, the mounting bracket 10 is temporarily fixed to the outside of the outer frame 4 with fasteners 9, and the vertical part 12 of the mounting bracket 10 is attached to the opening edge peripheral wall of the floor opening 2. 3, and then fixing the mounting brackets 10 to the outer frame 4. However, this is not limited to this, of course.
It is also possible to fit this outer frame 4 into the floor opening 2 after fixing it to the floor opening 2.

As described above, the mounting structure of the floor opening frame according to the present invention has a substantially L-shaped cross section formed on the outside of the outer frame, and a substantially horizontal portion fixed to the lid supporting portion of the outer frame and a horizontal portion on the outside. A mounting bracket having a substantially vertical vertical part facing the rising part of the frame is installed, and a through hole through which at least the fastener can pass is bored in the rising part of the outer frame at a position facing the vertical part. At the same time, a fastener insertion hole is bored in the vertical part of the mounting bracket at a position corresponding to the above-mentioned through-hole, and the fastener inserted through the above-mentioned through-hole and inserted into the fastener insertion hole in the vertical part Since the vertical part is fixed to the opening edge of the floor opening, the outer frame can be held at the actual installation height.
You can install it while checking whether it is located at a predetermined height.

Therefore, the mounting position is determined based on the dimensions, such as fixing the support member to a portion determined so that the upper end surface of the outer frame is located at a predetermined height, and then attaching the outer frame to this support member. Compared to the conventional method, the present invention allows the outer frame to be attached by matching the actual item, so even if there is a manufacturing error in the outer frame, the outer frame can be attached accurately to a predetermined height. Moreover, there is no need for troublesome work such as determining accurate dimensions, and the installation work can be simplified.

Moreover, according to the present invention, the rising part of the outer frame is not directly fixed to the opening edge of the floor opening, but is attached to the opening edge via the mounting bracket, so that the outer frame, especially its rising part, is not directly fixed to the opening edge of the floor opening. The lid does not deform during opening and closing, and the lid can be opened and closed smoothly.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a floor inspection port to which the floor opening frame mounting structure according to the first embodiment of the present invention is applied, FIG. 2 is a cross-sectional view taken along the line -- in FIG. A plan view of a floor inspection port to which the floor opening frame mounting structure of the embodiment is applied, FIG. 4 is a perspective view showing the mounting bracket and support base with the outer frame omitted, and FIG. A line sectional view, FIG. 6 is a sectional view similar to FIG. 5 showing a modification of the mounting fitting of the second embodiment. 1...floor, 2...floor opening, 4...outer frame, 5...
Rising part, 6... Lid body support part, 8... Lid body, 10
... Mounting bracket, 11 ... Horizontal part, 12 ... Vertical part, 13 ... Fastener, 14 ... Through hole, 15 ... Fastener insertion hole, 21 ... Support leg, 22 ... Inclined surface ,
23... Base material.

Claims (1)

[Claims] 1. A floor opening is provided above the floor base at an appropriate height from the floor base, and at least a substantially vertical rising portion and a lid are supported within the floor opening. In the installation structure of a floor opening frame to which an outer frame is attached which has a substantially horizontal lid support part, a through hole is bored in the rising part of the outer frame, and the lid support part of the outer frame is On the lower surface, a fastener insertion hole is drilled in the vertical part of the mounting bracket, and the horizontal part of the mounting bracket is formed into a substantially L-shaped cross section, and the position can be adjusted in the vertical direction with respect to the rising part of the outer frame. Also, the fastener insertion hole is fixed so as to face the through hole of the outer frame, and the vertical part of this mounting bracket is brought into contact with the opening edge of the floor opening, and the vertical part is connected to the through hole of the outer frame. A mounting structure for a floor opening frame, characterized in that it is fixed to an opening edge of a floor opening by a fastener inserted through a fastener insertion hole through a hole. 2 A slope is formed on the vertical part of the mounting bracket at least around the fastener insertion hole, and the fastener insertion hole is inclined in accordance with this slope, so that the fastener inserted into the fastener insertion hole can be inserted into the fastener insertion hole. 2. The mounting structure for a floor opening frame according to claim 1, wherein the bolts are driven diagonally into the base material of the floor.