JP2798606B2 - Floor inspection door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor inspection opening attached to an opening formed on a floor of a building, an underpass or the like.

[0002]

2. Description of the Related Art Conventionally, a floor inspection port 1 of this kind comprises an outer frame 2 and an inner frame 8 fitted inside the outer frame 2, as shown in FIG. Vertical wall 3a and vertical wall 3
The outer frame member 3 having a substantially L-shaped cross section is framed in a frame shape by a support wall 3b extending horizontally from one end of the outer frame member 2a.
Is attached to the periphery of the opening W formed in the floor 4 in a rim-like manner via an anchor member 5 in a state where the upper end is held at a predetermined height position from the floor surface 4a, and is attached to the outer periphery thereof. A base material 6 such as mortar is cast with a predetermined thickness, and a floor material 7 such as a porcelain tile having a predetermined thickness is adhered to an upper surface thereof. The inner frame body 8 includes a vertical wall 9a opposed to the vertical wall 3a of the outer frame member 3 and the vertical wall 9a.
Mounting edge 9b extending horizontally from a predetermined position near the end of the mounting edge 9b
The inner frame member 9 is formed into a frame shape so as to be able to be fitted inside the outer frame body 2, and an inner lid 10 is mounted between the mounting edges 9 b of the inner frame body 8 to open upward in the drawing. A base material 6 is cast into the space portion 11 with a predetermined thickness, and a floor material 7 is adhered on an upper surface thereof to form an inner frame 8. Prior to fitting the inner frame 7 formed as described above, a band-shaped packing material 12 made of synthetic resin or the like having a predetermined width and a predetermined thickness is attached to the upper surface of the support wall 3b of the outer frame 2. The inner frame body 8 is fitted and the floor member 7 adhered to the outer periphery of the outer frame body 2 in this fitted state and the floor material 7 adhered to the inner frame body 8 are flush with each other. It is embedded.

[0003]

However, since the floor inspection port 1 is formed relatively large and the inner frame 8 has a considerable weight, wiring, piping and the like disposed under the floor are required. At the time of inspection, the inner frame 8 is lifted at one end as shown by a two-dot chain line in FIG. 10 and slides along the support wall 3b of the outer frame 2 at the corner 8b on the other end 8a. While it was removed, and after the inspection, it was slid again and inserted again. However, the packing material 12 is stuck on the support wall 3b, and when the frame of the inner frame body 8 is framed, the corners are framed in a frame shape. If it is not good, an edge is formed at the same corner, so that when the edge 8a is slid, there is a problem that the packing material 12 is turned over, twisted, torn, etc., thereby impairing its function. When fitted into the body 2, the four circumferential vertical walls 9 a of the inner frame 8 are
In the packing material 12 attached to the inner peripheral support wall 3b, the contact surface portion A close to the vertical wall 9a receives the weight of the inner frame body 8. Further, the contact surface portion A receives a pedaling force of a pedestrian or the like.
However, since the packing material 12 is only adhered to the support wall 3b, it is in an open state, so that the contact surface portion A is locally locked by receiving the load and the treading force, and the elastic performance is reduced. There has been a problem that deterioration is accelerated. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can prevent damage to a packing material due to an attachment / detachment operation of an inner frame, and also prevent promotion of deterioration of the packing material due to external force. The purpose of the present invention is to provide a floor inspection port that can perform the inspection.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention provides an inner frame body on an outer frame body.
In the floor inspection port which is fitted in a reversible manner, the outer frame body has an outer frame member comprising a vertical wall and a support wall extending horizontally from the lower end of the vertical wall with the support wall facing inward. The support wall is provided with a fitting groove for fitting a packing member in the longitudinal direction, and the support wall has a substantially rectangular shape .
In the longitudinal direction of the inner end portion, a convex edge is formed so as to be able to slide and guide the inner frame, and a packing member is provided on the upper surface side of the support wall .
Forming a fitting recess into which the tongue piece is fitted , and
Height is higher than the thickness of the tongue piece fitted in the fitting recess
Then, the vertical wall of the inner frame body is placed on the same tongue so that it can be turned upside down. The invention according to claim 2 is characterized in that the tongue of the packing member is formed of a support wall. is accommodated in the recess the fitting, it is incorporated fitted to form contact with the convex edge and the vertical wall base of the recess inlaid same, the vertical wall of the inner frame member is a floor inspection port which was configuration you elastic support.

[0005]

According to the above construction, when a load acts on the contact surface of the tongue piece of the packing member by the lower end face of the inner frame, the contact surface of the tongue piece is compressed and deformed by this load, and the tongue piece of the packing member is compressed. A reaction force is generated in the vertical direction in the contact surface portion, and both ends of the tongue piece are fitted in the concave portions in contact with the vertical wall and the convex edge. Both ends are deformed and moved, and the ends are pressed against the left and right vertical walls and the convex edges. When the treading force is applied in this state, the tongue is particularly restrained by the vertical wall and the convex edge in the horizontal direction. It works reliably and repeatedly.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to the drawings. FIG.
3 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG.
Shows the relationship between the outer frame member 23 and the packing member 45. The floor inspection port 21 has an outer frame 22 framed in a rectangular shape as in the prior art, and an inner frame fitted inside the outer frame 22. Body 35
It is composed of

The outer frame member 22 is formed by forming an outer frame member 23 having the same cross-sectional shape into a rectangular frame. The outer frame member 23 is formed by extruding an aluminum alloy material or a stainless steel plate. The cross-sectional shape is formed into a substantially L-shaped cross-section by a vertical wall 24 having a predetermined height and a support wall 25 extending horizontally from the lower end of the vertical wall 24 by a predetermined width. Locking edge 2 having a substantially hook-shaped cross section in the longitudinal direction of the upper and lower ends that are outside the
Grooves 27 are formed by protruding the grooves 6 and 26. A protruding edge 28 having a predetermined height h is formed in the longitudinal direction on the end side of the support wall 25 (see FIG. 4), and the tongue piece 47 of the packing member 45 is provided on the upper surface side of the support wall 25. A fitting recess 29 having a width w1 and a height h to allow fitting is formed.
In the longitudinal direction of the base of the protruding edge 28, a fitting groove 30 having a substantially sectional groove shape for fitting and locking the locking edge 46 of the packing member 45 is provided.

The outer frame member 23 thus formed is cut to a predetermined length, and its left and right ends are cut at a predetermined angle to form a butted surface c1. When the butting surfaces c1 of the two are abutted against each other, a substantially frame shape is formed, the upper and lower locking edges 26 are aligned and the grooves 27 are continuous, and a substantially L-shaped connecting member is provided between the upper and lower grooves 27 at each corner. The outer frame body 22 is formed by fitting the frame 31 into a substantially rectangular frame.

In the outer frame 22 thus formed, the connecting member 31 is fixed to the periphery of the opening W formed in the floor 4 by the welding means via the anchor members 5 and 5a in substantially the same manner as in the prior art. The upper edge of the vertical wall 24 is attached to the floor 4a in a state of being held at a predetermined height from the floor surface 4a, and the outer periphery thereof is covered with a mortar or a base material 6 such as iron material or wood (not shown). Is provided in a predetermined thickness, and a floor material 7 such as a porcelain tile or a floor finishing material having a predetermined thickness is adhered to the upper surface side.

The inner frame 35 is framed by an inner frame member 36 having the same cross-sectional shape into a substantially rectangular shape to be fitted inside the outer frame 22. The inner frame member 36 is formed by extruding an aluminum alloy material or made of a stainless steel plate or the like, and has a cross-sectional shape having a predetermined height and a vertical wall 37 opposite to the vertical wall 24 of the outer frame member 23. Is formed in a substantially L-shaped cross-section by a mounting edge 38 that extends horizontally from the lower end in the opening W with a predetermined extension width, and has a substantially lower cross-section in the longitudinal direction of the lower end of the vertical wall 37. Key-shaped legs 39
Are formed. In addition, locking edges 40, 40 are protrudingly provided on the inner surface of the vertical wall 37 so as to face each other to form a groove 41.

The inner frame member 36 thus formed is cut to a predetermined length, and left and right ends thereof are cut at a predetermined angle to form an abutting surface c2. When the butting surfaces c2 of the 36 are abutted against each other, they form a substantially frame shape, the upper and lower locking edges 40 are aligned, and the groove portions 41 are continuous. The inner frame 35 is formed so as to be framed in a substantially rectangular shape by fitting the 42.

An inner lid 48 is fixed to the lower surface of the mounting edge 38 of the inner frame 35 thus formed to form a box having a space 43 which opens upward. A base material 6 is cast, and a floor material 7 such as a porcelain tile or a floor finishing board is stuck on the upper surface side.
A handle 44 is attached to the inner lid 48, and a reinforcing member (not shown) for supporting by a treading force is attached to the inner lid 48. Prior to fitting the thus formed inner frame body 35 into the outer frame body 22, a packing member 45 is attached to the support wall 25 of the outer frame body 22.

The packing member 45 is made of, for example, a synthetic resin material or the like.
8, a locking edge 46 formed of a head portion 46a and a neck portion 46b to be fitted and locked in the fitting groove 30 formed in the vicinity of the vertical wall 8, the vertical wall 24 on the upper surface side of the support wall 25, and the convex edge 28. A predetermined width w2 and a thickness t that can be fitted into the fitting recess 29 formed therebetween.
Is formed integrally with a horizontal strip-shaped tongue piece 47 having The width w2 of the tongue piece 47 is the width w1 of the fitting recess 29.
And w1 ≧ w2 and the thickness t is t
.Ltoreq.h, preferably t <h. The packing member 45 thus formed has its locking edge 46 fitted in the fitting groove 30, and the tongue piece 47 is fitted in the fitting recess 2.
9, both edges 47a and 47b of the tongue piece 47 are fitted into the vertical wall 24 and the convex edge 28 in a contact state.

The inner frame member 36 at one end of the inner frame body 35 is placed on the convex edge 28 of the corresponding outer frame member 23 and slides with respect to the outer frame body 22 to which the packing member 45 is attached. Move and lift the slide side to make the inner frame 3
5 is inserted. In this fitted state, the leg 3 of the inner frame 35 is
9 is in contact with the packing member 45 and the outer frame 2
The floor member 7 attached to the four circumferences of No. 2 and the floor member 7 attached to the inner frame 35 are flush with each other.

Since the floor inspection port 21 of the present embodiment is constructed as described above, one end of the inner frame 35 is lifted up when inspecting wiring, piping and the like disposed under the floor. The leg 39 of the inner frame member 36 at the other end is connected to the convex edge 28 of the outer frame member 23.
The height h of the convex edge 28 is formed higher than the thickness t of the tongue piece 47 of the packing member 45 attached to the fitting concave portion 29 even when the sliding operation is performed along And the packing member 45 is not turned, twisted, or torn, and even if the edge of the inner frame body 35 has an inferior accuracy due to the low accuracy of the abutting surface c2, it is turned, twisted, or torn. Can be eliminated.

In a state where the inner frame 35 is fitted in the outer frame 22, the lower surface of the leg 39 of the inner frame 35 is used to contact the tongue piece 47 of the tongue 47 of the packing member 45 as shown in FIG. The load P acts on. Due to this load P, the contact surface portion A of the tongue piece 47 is obtained.
Is compressed and deformed, and a vertical reaction force Pu is generated in the contact surface portion A of the tongue piece 47.
7a and 47b are fitted into the recessed portions 29 in contact with the vertical wall 24 and the protruding edge 28, so that the end portions 47a and 47b are deformed and moved by the compression deformation of the contact surface portion A, and the end portions 47a and 47b are The portions 47a and 47b are pressed by the pressure Ph against the vertical wall 24 and the convex edge 28 in the left-right direction. When the treading force Ps acts in this state, the tongue 47 is restrained by the vertical wall 24 and the convex edge 28 in the horizontal direction. The force Ph is surely repeatedly applied to the contact surface portion A. Accordingly, since the reaction force Ph reliably and repeatedly acts toward the contact surface portion A, the local tightening of the contact surface portion A is alleviated, whereby the elastic performance can be maintained, and the packing member 45 can be maintained. Function can be maintained.

FIGS. 6 to 8 show another embodiment of the floor inspection port 21. The inspection port 21 is formed on the outer frame member 23 of the outer frame body 22 and has a fitting groove 30 formed therein. The position and the shape of the packing member 45 are different, and the others are formed similarly. That is, as shown in FIG. 7, the cross-sectional shape of the outer frame member 51 is the same as the outer frame member 23, and has a vertical vertical wall 52 having a predetermined height and a predetermined width from the lower end of the vertical wall 52. The support wall 53 is formed to have a substantially L-shaped cross section, and the upper and lower ends outside the vertical wall 52 are opposed to each other in the longitudinal direction so that the locking edge 5 has a substantially hook-shaped cross section.
The grooves 54 are formed by protruding the grooves 4 and 54. Further, a convex edge 56 having a predetermined height h is formed on the upper surface in the longitudinal direction on the end side of the support wall 53, and a concave line having a hook-shaped support edge is formed on the lower surface. For example, when the base material 6 is wood, the outer frame 22 may be screwed to the concave streak and the anchor members 5 and 5a may be omitted. The tongue piece 6 of the packing member 61 is provided on the upper surface side of the support wall 53.
3. A fitting recess 57 having a width w1 and a height h that allows the fitting of the third fitting 3
In the longitudinal direction of the base of the vertical wall 52, a fitting groove 58 having a substantially cross-sectional groove shape for fitting and locking the locking edge 62 of the packing member 61 is formed.

The packing member 61 is also made of a synthetic resin material or the like, and has a head portion 62a and a neck portion 62b which are fitted and locked in fitting grooves 58 formed in the base of the vertical wall 52 of the outer frame member 51. And a horizontal strip-shaped tongue piece 63 having a predetermined width w2 and a thickness t that can be fitted into the fitting recess 57 from the end of the neck portion 62b. The width w2 of the tongue piece 63 is the width w of the fitting recess 57.
1 and w1 ≧ w2, and the thickness t has a relationship of t ≦ h, preferably t <h, with the height h of the convex edge 56. The locking edge 62 of the packing member 61 thus formed is fitted into the fitting groove 58, and the tongue piece 63 is fitted into the fitting recess 57 so that the edge 63a of the tongue piece 63 is The upper end of the neck portion 62b is in contact with the vertical wall 52 while being fitted into the convex edge 56 in a contact state.

Therefore, one end of the inner frame 35 is lifted with respect to the outer frame 22 framed by the outer frame member 51 formed as described above, and the inner frame at the other end is raised. Even if the leg 39 of the member 36 is slid along the convex edge 56 of the outer frame member 51 to be removed and fitted, the height h of the convex edge 56 is the same as that of the packing attached to the fitting concave portion 57. Since the thickness t of the tongue piece 63 of the member 61 is higher than the thickness t of the packing member 61, the packing member 61 is not turned, twisted, or torn, and the accuracy of the abutting surface c2 in the frame of the inner frame body 35 is reduced. Even if an edge portion is badly formed, turning over, twisting, tearing and the like can be eliminated.

In the state where the inner frame 35 is fitted into the outer frame 22, the lower surface of the leg 39 of the inner frame 35 is used to contact the tongue piece 63 of the tongue 63 of the packing member 61 as shown in FIG. The load P acts on. Due to this load P, the contact surface portion A of the tongue piece 63
Is compressed and deformed to generate a vertical reaction force Pu on the contact surface portion A of the tongue piece 63, and the end 6 of the tongue piece 63
3a is fitted into the concave portion 57 in contact with the convex edge 56, so that the end portion 63a is deformed and moved by the compression deformation of the contact surface portion A, and the neck portion 62 of the locking edge portion 62 is moved.
b is deformed and moved to the vertical wall 52 and pressed by the pressure Ph. When the pedaling force Ps acts on the inner frame body 35 in this state, the tongue piece 63 is particularly moved in the horizontal direction by the vertical wall 52 and the convex edge 5.
6, the large reaction force Pha acts on the tongue piece 63 repeatedly toward the contact surface portion A by the action of the pedaling force Ps. Therefore, the repulsive force Pha reliably acts toward the contact surface portion A, whereby the contact surface portion A can maintain the resilience performance in which local tightening can be alleviated, and the packing member 61 can be maintained. Function can be maintained.

In the above embodiment, the base material 6 such as mortar is cast in the space 43 of the inner frame 35, and the floor material 7 is adhered to the upper surface thereof, as shown in FIG. The floor member 7 is stuck on the upper surface side of the inner lid 48 by reversing the inner frame body 35 as described above, and the base material 6 such as a mortar material can be used.

[0022]

Since the present invention is constructed as described above, one end of the inner frame is lifted and the other end is lifted when inspecting the wiring, piping and the like arranged under the floor. Even if the inner frame member is slid along the convex edge of the outer frame member and removed and fitted, the height of the convex edge is greater than the thickness of the tongue piece of the packing member attached to the fitting concave portion. Since it is formed high, it does not give the packing member a turn, twist, tear, etc., and in the frame of this inner frame body, even if the accuracy of the abutting surface is poor and an edge portion is generated,
Turns, twists, tears and the like can be eliminated. Also, when a load is applied to the contact surface of the tongue of the packing member by the lower end surface of the inner frame while the inner frame is fitted in the outer frame, the contact surface of the tongue is compressed and deformed by the load. As a result, a reaction force is generated in the vertical direction in the contact surface portion of the tongue piece, and both ends of the tongue piece are fitted in the vertical wall and the protruding edge in a state of being fitted in the concave portion. Both ends are deformed and moved by the compression deformation of the portion, and the ends are pressed against the vertical wall and the convex edge in the left-right direction. When the treading force is applied in this state, the tongue is particularly restrained by the vertical wall and the convex edge in the horizontal direction. It will work repeatedly and surely. Therefore, since the reaction force reliably acts repeatedly toward the contact surface portion, it is possible to maintain elasticity performance in which the contact surface portion is less likely to be locally locked, and the function as a packing member can be maintained. Can be maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor inspection port.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is an enlarged sectional view showing a relationship between a vertical frame member and a packing member.

FIG. 5 is an explanatory diagram when the self-weight of the inner frame and the treading force act on the packing member.

FIG. 6 is a cross-sectional view illustrating an aspect of another vertical frame member.

FIG. 7 is an enlarged sectional view showing a relationship between a vertical frame member and a packing member in FIG. 6;

FIG. 8 is an explanatory diagram in the case where the self-weight of the inner frame and the treading force act on the packing member in FIG. 6;

FIG. 9 is a cross-sectional view when the inner frame is used upside down.

FIG. 10 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 21 Floor inspection opening 22 Outer frame body 23,51 Vertical frame member 24,52 Vertical wall 25,53 Support wall 28,56 Convex edge 29,57 Fitting concave part 30,58 Fitting groove 35 Inner frame body 45,61 Packing member 46,62 Locking edge 47,63 Tongue piece

Claims (2)

(57) [Claims] In a floor inspection opening in which an inner frame body is reversibly fitted to an outer frame body, the outer frame body extends vertically from a vertical wall and a lower end of the vertical wall. The outer frame member consisting of is framed in a substantially square shape with the support wall facing inward,
A fitting groove for fitting a packing member is formed in the support wall in a longitudinal direction, and the fitting groove is formed in a longitudinal direction of an inner end of the support wall.
Said inner frame member slide guide capable to form a tongue, the
A fitting recess for fitting the tongue of the packing member is formed on the upper surface side of the support wall, and the height of the convex edge is adjusted to the fitting recess.
Formed higher than the thickness of the fitted tongue,
The feature is that it is configured to be able to turn upside down the vertical wall of
Floor inspection port to. 2. The tongue piece of the packing member is accommodated in a fitting concave portion of a support wall, and is fitted into a protruding edge of the fitting concave portion and a base of a vertical wall so as to be in contact therewith. floor access door according to claim 1, characterized in that the vertical wall of the frame was configuration you elastic support.