JP2017101518A - Foundation inspection hole and installation method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a foundation inspection hole to be easily installed in a foundation.SOLUTION: A foundation inspection hole 10, which is used by being installed in an opening 2 formed in a foundation 1, comprises a frame body 11 that includes a frame main-body 12 arranged within the opening 2 and a flange 13 formed at one end of the frame body 12, and a lid body 21 capable of being fitted into an opening 15 of the frame body 11. The flange 13 faces a peripheral edge of the opening 2 of the foundation 1 in a state in which the frame main-body 12 is arranged within the opening 2 of the foundation 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a building basic inspection port and a method of mounting the same.

  2. Description of the Related Art In recent years, with the trend toward energy saving in houses, in order to improve the heat insulation performance of bathroom compartments and the like, a heat insulating material is provided over the entire circumference on the inner side surface of the foundation that divides the lower floor part of the bathroom or the like. However, it is necessary to provide an opening (inspector or inspection port) for inspecting the lower floor portion in the foundation, and no heat insulating material can be provided in the opening portion.

  Therefore, in order to block the ventilation through the opening provided in the foundation and to insulate it, a basic inspection port has been proposed in which a lid with heat insulation can be attached to and detached from the opening of the frame fixed to the opening of the foundation. (For example, refer to Patent Document 1).

Utility Model Registration No. 3078345

  However, the basic inspection port described in Patent Document 1 is such that the frame body of the basic inspection port is placed in the mold and the frame body is embedded in the foundation. In such a basic inspection port, it is necessary to form a foundation by hitting the foundation concrete after pre-positioning the frame of the basic inspection port in the mold, so the work at the time of foundation formation is very troublesome, There arises a problem that the basic inspection port cannot be easily attached to the foundation. At present, there is no known retrofitting type base inspection port that is installed after the foundation is formed.

  Then, the objective of this invention is providing the basic inspection port which can be easily attached to a basic inspection port, and its attachment method.

  A basic inspection port according to the present invention is a basic inspection port that is used by being attached to an opening formed in a foundation, and is arranged in the opening of the foundation, and has a frame main body having an opening inside the opening, and And a frame including a flange formed so as to protrude from the outer peripheral side surface of the frame body, and a lid that can be fitted into the opening of the frame. And the said flange opposes the opening peripheral part of the said foundation in the state in which the said frame main body has been arrange | positioned in the opening of the said foundation.

  According to this, it becomes possible to attach a basic inspection opening to the opening formed at the time of foundation formation. For this reason, it is not necessary to embed the frame of the basic inspection port in the foundation when the foundation is formed, and the basic inspection port can be easily attached to the foundation. Also, since the frame has a flange, even if the opening formed in the foundation is slightly larger than the frame body, the flange faces the opening peripheral edge of the foundation when the foundation inspection port is attached to the foundation opening. Can be made. That is, the allowable range of the opening dimension formed on the foundation is widened, and the opening is easily formed on the basis.

  In the present invention, it is preferable that a plurality of ribs are formed on an opposing surface of the flange that faces the foundation. As a result, the strength of the flange is improved, and when a temporary fixing adhesive is applied to a portion facing the flange of the foundation, the contact area with the temporary fixing adhesive is increased, and the frame body is effective. Can be adhered to.

  Further, in the present invention, the frame main body is formed in a cylindrical shape, the frame body has a heat insulating body that covers the entire outer peripheral side surface of the frame main body, and the lid body is It is preferable to have heat insulation. Thereby, it becomes possible to improve the heat insulation of a basic inspection port. For this reason, the heat insulation performance under a floor can be improved in a retrofit type basic inspection port.

  Further, in the present invention, the frame body is formed in a rectangular tube shape, a first engagement portion formed on a lower surface of the inner peripheral surface constituting the opening, and the inner peripheral surface The lid has a second engaging portion formed on the upper surface, and the lid has a first engaged portion that can be engaged with the first engaging portion formed on the lower surface. The upper end portion of the lid body has a second engaged portion that can be engaged with the second engaging portion, and the first engaged portion is engaged with the first engaging portion. A lock member having an elastic support portion that is elastically deformable so as to engage the second engaged portion with the second engaging portion when the opening is closed with a lid is provided. When the second engaged portion is engaged with the second engaging portion, the member is moved to the second engaging portion of the second engaged portion by displacing the elastic support portion. Against Which is preferably configured to be capable to release the engagement. Thereby, the first engaged portion and the second engaged portion can be engaged with the first engaged portion and the second engaged portion, and the opening can be closed with the lid. Further, since the lock member can disengage the second engaged portion from the second engaging portion by displacing the elastic support portion, the lid that closes the opening is easily removed. It becomes possible. Therefore, the lid can be easily opened and closed in a narrow space under the floor during inspection.

  Moreover, in this invention, the said 1st engaging part and the said 1st to-be-engaged part are mutually formed along the extension direction of the said foundation in which the said opening was formed 2 each. Is preferred. Thereby, the lid can be engaged with and attached to the opening of the frame at three positions. For this reason, it becomes possible to fix a cover body to a frame body without rattling, and the airtightness of a frame body and a cover body improves.

  Moreover, in this invention, it is preferable to provide further the packing which is provided in at least one of the said cover body and the said frame body, and fills the clearance gap between both when the said cover body is attached to the said frame body. Thereby, the airtightness of a frame and a cover body improves further.

  The method of mounting the basic inspection port according to the present invention includes a frame installation step of installing a frame of the basic inspection port in an opening formed in the foundation, and a foamed synthetic resin is filled between the opening of the foundation and the frame And a filling step. And in the said frame installation process, the flange of the said frame is made to oppose the opening peripheral part of the said foundation.

  According to this, it becomes possible to attach a basic inspection opening to the opening formed at the time of foundation formation. For this reason, it is not necessary to embed the frame of the basic inspection port in the foundation when the foundation is formed, and the basic inspection port can be easily attached to the foundation. Further, in the frame body installation step, the flange of the frame body is opposed to the peripheral edge of the opening of the foundation, so that the allowable range of the opening dimension of the foundation is widened and the opening is easily formed on the foundation.

  According to the basic inspection port and the mounting method of the present invention, it is possible to attach the basic inspection port to the opening formed when the foundation is formed. For this reason, it is not necessary to embed the frame of the basic inspection port in the foundation when the foundation is formed, and the basic inspection port can be easily attached to the foundation.

It is a fragmentary perspective view of the building structure where the basic inspection port which concerns on one Embodiment of this invention was attached. (A) is a front view of the building structure shown in FIG. 1, (b) is a top view of the building structure shown in FIG. It is sectional drawing along the III-III line of Fig.2 (a). (A) is a perspective view of the frame shown in Drawing 1, and (b) is an exploded perspective view of a frame. It is a front view of the frame shown in FIG. (A) is a perspective view of the cover body shown in FIG. 1, (b) is a perspective view when the cover body shown in FIG. 6 (a) is viewed from the opposite side. (A) is a perspective view of the foundation shown in FIG. 1, (b) is a perspective view showing a situation where a foundation inspection port is attached to the opening of the foundation.

  Hereinafter, a building structure 100 to which a basic inspection port 100 according to an embodiment of the present invention is attached will be described with reference to FIG.

  As shown in FIGS. 1 and 2, the building structure 100 according to the present embodiment includes a foundation 1 that is long in the longitudinal direction A (for example, a cloth foundation) and an opening 2 formed in the foundation 1 (FIG. 7A). The base inspection port 10 attached to the base), the foundation 3 disposed on the foundation 1 and the foundation inspection port 10, a plurality of foundation packings 4 disposed between the foundation 3 and the foundation 1, and the opening 2 and the base 3 and the foamed synthetic resin 5 filled between the frame 11 of the basic inspection port 10. The building structure 100 shown in FIG. 1 shows a part of the foundation structure that defines the lower space of the bathroom using the unit bath, and the width direction B (the direction orthogonal to the longitudinal direction A) of the rising portion 1b of the foundation 1 ), The left side in the drawing is the inner side and the right side is the outer side than the rising portion 1b. Accordingly, in the following description, one side in the width direction B may be referred to as the outside and the other side as the inside.

  The foundation 1 is composed of a footing 1a and a rising portion 1b standing upward from the footing 1a. The base 3 and the foundation packing 4 are fixed on the rising portion 1b by anchor bolts, square washers and nuts (both not shown) implanted in the foundation 1. A heat insulating material 6 is provided on the entire inner surface 1c of the rising portion 1b. The heat insulating material 6 may be provided on the outer side surface 1d of the rising portion 1b. Further, as shown in FIG. 7A, the rising portion 1b is formed with an opening 2 in which a midway portion in the longitudinal direction A is not provided, and the rising portions 1b are separated from each other in the longitudinal direction A. It is divided into two.

  As shown in FIGS. 1 to 3, the basic inspection port 10 includes a frame body 11 and a lid body 21. As shown in FIGS. 3 and 4, the frame body 11 includes a frame body 12, a flange 13, and a heat insulator 14 that are configured to be disposed in the opening 2 of the foundation 1. As shown in FIGS. 2 to 4, the frame body 12 has a rectangular tube shape, and is formed such that the width in the longitudinal direction A and the height in the vertical direction C are slightly smaller than the opening 2. Further, as shown in FIG. 7B, the frame main body 12 has an opening 15 on the inner side in the radial direction than the opening 2 in a state where the frame main body 12 is disposed in the opening 2. The opening direction of the opening 15 is parallel to the width direction B of the rising portion 1 b of the foundation 1.

  The frame body 12 is made of a synthetic resin and has an inner peripheral surface 16 that constitutes the opening 15 as shown in FIG. The opening 15 is configured by communicating a first opening 15a and a second opening 15b. The second opening 15b is disposed on the inner side along the width direction B than the first opening 15a, and the opening diameter thereof is slightly smaller than that of the first opening 15.

  As shown in FIGS. 4 and 5, the inner peripheral surface 16 includes a first inner peripheral surface 16a that constitutes the first opening 15a, a second inner peripheral surface 16b that constitutes the second opening 15b, and a first A step surface 16c that connects the inner peripheral surface 16a and the second inner peripheral surface 16b is provided. The step surface 16c is a surface erected so as to face in the width direction B, and is formed in an inverted U shape as shown in FIG. The first inner peripheral surface 16a and the second inner peripheral surface 16b are continuously connected along the width direction B at the lower surface portion.

  As shown in FIG. 5, a packing 19 made of an elastic material such as rubber is attached to the inner peripheral surface 16. The packing 19 includes a first packing 19a and a second packing 19b. The 1st packing 19a is continuously affixed on the upper part extended along the longitudinal direction A of the level | step difference surface 16c, and the two right-and-left parts extended along the up-down direction C, and has a reverse U-shape. The second packing 19b is affixed to the lower surface 16a1 and extends along the longitudinal direction A. Further, both ends of the second packing 19b in the longitudinal direction A are disposed in the vicinity of both ends of the first packing 19a. By providing such a packing 19, when the opening 15 is closed with the lid body 21, the gap between the lid body 21 and the frame body 11 is almost entirely filled in the circumferential direction. . Thereby, the airtightness of the frame 11 and the lid 21 is further improved. When the lid body 21 closes the opening 15 of the frame body 11, the first packing 19 a is provided on the surface facing the step surface 16 c of the lid body 21, and the second packing 19 b is the lower surface 21 a of the lid body 21. May be provided. The packing 19 may be provided on both the frame body 11 and the lid body 21. Also in these cases, the airtightness between the frame body 11 and the lid body 21 is further improved.

  As shown in FIG. 4, the frame body 12 includes two recesses (first engaging portions) 17 formed on the lower surface 16a1 of the first inner peripheral surface 16a, and a first inner surface as shown in FIG. It has the convex part (2nd engaging part) 18 formed in the upper surface 16a2 of the surrounding surfaces 16a. The two concave portions 17 are disposed in the vicinity of both end portions in the longitudinal direction A of the lower surface 16a1 and open upward. That is, the two concave portions 17 are arranged apart from each other along the longitudinal direction A (the extending direction of the foundation 1). As shown in FIGS. 3 and 5, the convex portion 18 protrudes downward from the upper surface 16 a 2 and extends along the longitudinal direction A. Further, the convex portion 18 is disposed in the center of the upper surface 16a2 with respect to the longitudinal direction A. That is, the convex portion 18 is disposed at the center of the opening portion 15 in the longitudinal direction A.

  As shown in FIG. 4B, a plurality of ribs 12 b are formed on the outer peripheral side surface 12 a of the frame body 12. Thereby, the strength of the frame body 12 is improved.

  As shown in FIG. 4, the flange 13 is made of synthetic resin, and protrudes from the outer peripheral side surface 12 a of the frame body 12 at one end (outer end) in the opening direction of the frame body 12, that is, in the width direction B. Is formed. The flange 13 in the present embodiment has an inverted U shape and is integrally formed on the upper side and the left and right sides of the frame body 12. The flange 13 may be formed in, for example, an annular shape, a U shape, or the left and right sides of the frame body 12 according to the shape of the opening 2, and these may be formed continuously or discontinuously. These can be changed as appropriate. Further, the flange 13 may be formed midway in the width direction B of the frame body 12.

  1 to 3, the flange 13 is a size that can be opposed to the peripheral portion of the opening 2, which is the rising portion 1 b of the foundation 1, in a state where the frame body 12 is disposed in the opening 2. Is formed. As shown in FIG. 4B, the flange 13 has a plurality of ribs 13b formed on the facing surface 13a facing the rising portion 1b. Thereby, the strength of the flange 13 is improved. Moreover, the convex part 13c extended in reverse U shape is formed in the opposing surface 13a. The convex portion 13c is formed by denting the surface of the flange 13 opposite to the facing surface 13a and partially projecting the facing surface 13a. The width of the tip surface 13d of the convex portion 13c is larger than the width of the tip surface of the rib 13b. Moreover, the front end surface 13d of the convex part 13c and the front end surface of the rib 13b are arrange | positioned at substantially the same plane. For this reason, when attaching the frame 11 to the opening 2, the front end surface 13d of the convex portion 13c and the front end surface of the rib 13b can be brought into contact with the rising portion 1b, and the frame 11 is stably disposed in the opening 2. Can be made. Further, at this time, when a temporary fixing adhesive is applied to a portion of the rising portion 1b facing the flange 13, the distal end surface 13d is formed wider than the rib 13b. Can be effectively bonded. Furthermore, since the plurality of ribs 13b are formed on the facing surface 13a, the bonding area with the temporary fixing adhesive is increased. For this reason, the frame 11 can be effectively bonded to the foundation 11.

  The heat insulator 14 is made of foamed synthetic resin (for example, foamed polystyrene), and is formed in a square tube shape as shown in FIG. Moreover, the heat insulating body 14 is attached to the outer peripheral side surface 12a of the frame main body 12, and covers the whole upper surface of the said outer peripheral side surface 12a, and the other end part (inner side edge part) of the width direction B of the outer peripheral side surface 12a over the perimeter. Covering. Thereby, the heat insulation of the basic inspection port 10 can be improved. For this reason, the heat insulation performance under a floor can be improved in the retrofit type basic inspection port 10. Further, since the heat insulator 14 is attached to the outer peripheral side surface 12a of the frame main body 12 so that the ribs 12b of the left and right outer peripheral side surfaces 12a of the frame main body 12 are exposed, the frame body is attached after the frame body 11 is attached to the opening 2 of the foundation 1. Adhesiveness with the foamed synthetic resin 5 filled in the gap between the opening 11 and the opening 2 can be improved.

  The lid body 21 is made of a foamed synthetic resin (for example, foamed polystyrene) and has a heat insulating property. Moreover, the cover body 21 is formed in the substantially square plate shape which can be fitted in the opening part 15, as shown in FIGS. As shown in FIG. 6A, the lid 21 has two convex portions (first engaged portions) 22 that protrude downward from the lower surface 21a. These two convex portions 22 are formed in a shape and a position to be engaged and engaged with the two concave portions 17 when the lid 21 is disposed in the opening portion 15. That is, the two convex portions 22 are also arranged apart from each other along the longitudinal direction A.

  As shown in FIGS. 1 to 3, the lid body 21 has a grip portion 23 that protrudes from an outer surface 21 c that is exposed to the outside when the lid body 21 is attached to the frame body 11. As shown in FIG. 6A, the grip portion 23 is disposed slightly below the upper end of the lid body 21 and in the center of the longitudinal direction A, and extends along the longitudinal direction A.

  When the two convex portions 22 of the lid body 21 are fitted into the two concave portions 17 at the upper end portion of the lid body 21 and the upper end portion of the lid body 21 is pushed inward along the width direction B, the frame A lock member 25 is provided to engage the convex portion 18 of the body 11 and lock the lid 21. The lock member 25 is made of synthetic resin, and is arranged at the center in the longitudinal direction A of the lid 21. The lock member 25 includes an attachment portion 26 attached to the upper end portion of the lid body 21, an elastic support portion 27 bent and extending from the attachment portion 26, and a convex portion formed at the tip of the corner of the elastic support portion 27. (Second engaged portion) 28.

  As shown in FIG. 6A, the elastic support portion 27 extends from the attachment portion 26 to the outside along the width direction B and then bends downward in the width direction B above the grip portion 23. It is formed to extend outward along. The convex portion 28 is formed to extend along the longitudinal direction A at the upper end of the corner portion of the portion that bends below the elastic support portion 27.

  When closing the opening 15 with such a lid body 21, the two convex portions 22 of the lid body 21 are fitted into the two concave portions 17, and the upper end portion of the lid body 21 is aligned along the width direction B. When the elastic support portion 27 is once bent downward so that the convex portion 28 rides over the convex portion 18, it is restored. That is, the elastic support portion 27 can be elastically deformed so that the convex portion 28 is engaged with the convex portion 18. Thereby, the convex part 28 and the convex part 18 engage, and the cover body 21 is locked to the frame 11. At this time, the frame body 11 has two concave portions 17 and one convex portion 18, and the lid body 21 has two convex portions 22 and one convex portion 28, so that the lid body 21 is opened to the opening portion of the frame body 11. 15 can be engaged and attached at three locations. For this reason, it becomes possible to fix the cover body 21 with respect to the frame body 11 without shakiness, and the airtightness of the frame body 11 and the cover body 21 improves. On the other hand, when the front end 27a of the elastic support portion 27 is pressed downward so as to approach the grip portion 23 while the lid 21 is locked to the frame 11, the engagement between the convex portion 28 and the convex portion 18 is released. Thus, the elastic support portion 27 bends downward, and the convex portion 28 moves downward. And the grip part 23 is gripped in a state in which the engagement between the convex part 28 and the convex part 18 is released, and the upper end part of the lid body 21 is pulled outward along the width direction B, whereby the lid body 21 is framed. It can be removed from the body 21.

  Then, the attachment method which attaches the basic inspection port 10 to the foundation 1 is demonstrated below, referring FIG.

  As shown in FIG. 7A, first, a base 1 having a rising portion 1b in which an opening 2 is formed at a midpoint in the longitudinal direction A is formed. Then, as shown in FIG.7 (b), the heat insulating material 6 is provided in the whole inner surface 1c of the standing part 1b. The heat insulating material 6 may be provided by spraying urethane foam by spraying, or may be provided by attaching a foamed polystyrene plate. Further, the heat insulating material 6 may be provided after the basic inspection port 10 is attached to the opening 2.

  Next, the frame 11 of the basic inspection port 10 is installed in the opening 2 formed in the rising portion 1b of the foundation 1 (frame body installation step). At this time, the frame main body 12 is disposed in the opening 2 while the front end surface 13d of the flange 13 and the front end surfaces of the plurality of ribs 13b are brought into contact with the outer side surface 1d of the rising portion 1b. That is, the flange 13 of the frame 11 is opposed to the peripheral edge of the opening 2 of the rising portion 1b. At this time, the frame 11 may be installed in the opening 2 after applying the temporary fixing adhesive to the outer peripheral surface 1 d of the rising portion 1 b and the peripheral edge of the opening 2. If it carries out like this, the flange 13 of the frame 11 will be effectively adhere | attached on the standing part 1b via the adhesive agent for temporary fixing, and the position shift etc. of the frame 11 can be suppressed. Thereafter, the lid 21 is attached to the frame 11 so that the opening 15 of the frame 11 is closed by the lid 21. The frame body 11 may be installed in the opening 2 in a state where the lid body 21 is attached to the frame body 11 so that the opening 15 of the frame body 11 is closed by the lid body 21.

  Next, the foamed synthetic resin 5 (for example, urethane foam) is filled by spraying between the opening 2 of the foundation 1 and the frame 11 and the upper surface of the frame 11 (portion facing the base 3) (for example, urethane foam). Process). Thereby, the heat insulating material 6 provided in the rising part 1 b of the foundation 1, the heat insulating body 14 of the frame body 11, and the lid body 21 can be continuously connected by the foamed synthetic resin 5. That is, since the entire circumference of the underfloor section can be covered with the heat insulating material, the heat insulation performance under the floor can be enhanced in the retrofitted type basic inspection port 10. The foamed synthetic resin 5 may also be filled between the flange 13 and the outer surface 1d of the rising portion 1b. In this case, since a plurality of ribs 13 b are formed on the flange 13, the bonding area with the foamed synthetic resin 5 is increased, so that the frame body 11 can be effectively bonded to the foundation 1. In this way, the attachment of the foundation inspection port 10 to the opening 2 of the foundation 1 is completed. Thereafter, the foundation packing 4 and the base 3 are fixed on the rising portion 1b, whereby the building structure 100 shown in FIG. 1 is completed.

  As described above, according to the basic inspection port 10 and its mounting method of the present embodiment, the basic inspection port 10 can be retrofitted to the opening 2 formed at the time of foundation formation. For this reason, it is not necessary to embed the frame 11 of the foundation inspection port 10 in the rising portion 1b of the foundation 1 when forming the foundation, and the foundation inspection port 10 can be easily attached to the foundation 1.

  Further, since the frame body 11 has the flange 13, even when the opening 2 formed in the foundation 1 is slightly larger than the frame main body 12, the flange is formed when the foundation inspection port 10 is attached to the opening 2 of the foundation 1. 13 can be opposed to the peripheral edge of the opening 2 of the foundation 1. That is, the allowable range of the opening dimension formed in the foundation 1 is widened, and the opening 2 is easily formed in the foundation 1.

  Further, since the frame body 11 has the concave portions 17 and the convex portions 18 and the lid body 21 has the convex portions 22 and 28, the convex portions 22 and 28 are engaged with the concave portions 17 and the convex portions 18. The opening 15 can be closed with the lid 21. In addition, since the lock member 25 can disengage the convex portion 28 from the convex portion 18 by displacing the elastic support portion 27, the lid 21 that closes the opening 15 can be easily removed. Is possible. Therefore, the lid can be easily opened and closed in a narrow space under the floor during inspection.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. A plurality of ribs 13b may not be formed on the flange 13 of the frame 11 in the above-described embodiment. Moreover, the frame main body 12 of the frame 11 may be formed in a shape other than the square tube, for example, a cylindrical shape. Moreover, the frame main body 12 does not need to have the lower part among the extending in the longitudinal direction A. That is, the frame body 12 is not particularly limited to a cylindrical shape. Further, the frame body 11 may not have the heat insulator 14. The frame 11 may be made of a metal material. Moreover, the cover body 21 may be comprised from the metal material or the synthetic resin material.

  Moreover, the convex part as a 1st engaging part may be formed in the frame 11, and the recessed part which the said convex part fits may be formed in the cover body 21 as a 1st to-be-engaged part. Moreover, the recessed part as a 2nd engaging part may be formed in the frame 11, and the convex part 28 may fit in the said recessed part. Moreover, the recessed part as a 2nd to-be-engaged part with which the convex part 18 fits may be formed in the cover body 21. FIG. Further, the first engaging portion and the second engaging portion may not be provided on the frame body 11, and the first engaged portion and the second engaged portion may not be provided on the lid body 21. Further, the lock member 25 may not be provided.

  Moreover, the 1st engaging part and the 1st to-be-engaged part may be provided in the frame 11 and the cover body 21 1 each. Further, the packing 19 may not be provided. In this case, when the lid 21 is attached to the frame 11 and the opening 15 is closed, it is preferable that the outer peripheral surface of the lid 21 and the inner peripheral surface of the frame 11 that are opposed to each other are in contact with each other. .

DESCRIPTION OF SYMBOLS 1 Foundation 2 Opening 10 Foundation inspection port 11 Frame body 12 Frame main body 12a Outer peripheral side surface 13 Flange 13a Opposing surface 13b Flange 14 Thermal insulator 16 Inner peripheral surface 16a1 Lower surface 16a2 Upper surface 17 Recessed portion (first engaging portion)
18 Convex part (second engaging part)
19 Packing 21 Lid 21a Lower surface 22 Convex part (first engaged part)
25 Lock member 27 Elastic support portion 28 Convex portion (second engaged portion)

Claims (7)

A basic inspection port attached to an opening formed in the foundation and used.
A frame body that is arranged in the opening of the foundation and has an opening inside the opening, and a frame body that includes a flange formed so as to protrude from the outer peripheral side surface of the frame body;
A lid that can be fitted into the opening of the frame,
The basic inspection port according to claim 1, wherein the flange faces the peripheral edge of the opening of the foundation in a state where the frame body is disposed in the opening of the foundation.   The foundation inspection port according to claim 1, wherein a plurality of ribs are formed on a surface of the flange facing the foundation. The frame body is formed in a cylindrical shape,
The frame body has a heat insulator covering the outer peripheral side surface of the frame body over the entire circumference,
The basic inspection port according to claim 1, wherein the lid body has heat insulation properties. The frame main body is formed in a square cylinder shape, and is formed on a first engagement portion formed on a lower surface of an inner peripheral surface constituting the opening and an upper surface of the inner peripheral surface. A second engaging portion,
The lid body has a first engaged portion that can be engaged with the first engaging portion formed on the lower surface,
A second engaged portion that can be engaged with the second engaging portion, and a lid in which the first engaged portion is engaged with the first engaging portion at an upper end portion of the lid body A lock member having an elastic support portion that is elastically deformable so as to engage the second engaged portion with the second engaging portion when the opening is closed with a body;
When the second engaged portion is engaged with the second engaging portion, the lock member displaces the elastic support portion to displace the second engaged portion of the second engaged portion. The basic inspection port according to any one of claims 1 to 3, wherein the basic inspection port is configured to be capable of releasing engagement with the portion.   The said 1st engaging part and the said 1st to-be-engaged part are mutually spaced apart and formed in two along the extension direction of the said foundation in which the said opening was formed, It is characterized by the above-mentioned. 4. Basic inspection port according to 4.   The packing according to claim 1, further comprising a packing that is provided on at least one of the lid and the frame and fills a gap between the lid and the frame when the lid is attached to the frame. The basic inspection port according to any one of the items. A frame installation process for installing a frame of a basic inspection port in an opening formed in the foundation;
A filling step of filling a foamed synthetic resin between the opening of the foundation and the frame body;
In the frame installation step, a mounting method for a basic inspection port, wherein a flange of the frame is opposed to an opening peripheral edge of the foundation.

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