Foundation inspection port member

Abstract

To provide a foundation inspection port member capable of preventing a portion of the concrete (concrete paste) poured into a concrete pouring space formed by a formwork from entering a joint between a frame member and a lid member through a small gap between the formwork and a surface of a frame member facing the formwork when constructing a foundation by pouring concrete into the concrete pouring space.SOLUTION: A frame member 2 of a foundation inspection port member 1 is divided into an outer peripheral frame member 2A and an inner peripheral frame member 2B. A contact deformation portion 24 that protrudes toward a formwork side from a surface of the frame member 2 facing the formwork used for constructing a foundation by pouring concrete, and a groove 25 formed on a back side of the contact deformation portion 24 are provided in the outer peripheral frame member 2A.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a member for a foundation inspection hatch used in a building. [Background technology]

[0002] In cold climates, for example, homes have traditionally had airtight structures under the floor to improve heat retention, especially in bathrooms with modular baths, to prevent cold air from entering.

[0003] Even when the underfloor space is made airtight, an inspection hatch must be installed in the foundation to allow for underfloor inspection work, and components for foundation inspection hatches have been proposed to make these foundation inspection hatches airtight (see, for example, Patent Documents 1 and 2).

[0004] Incidentally, the foundation inspection hatch component 101 for making the above-mentioned conventional foundation inspection hatch airtight is configured to consist of a frame component 102 that is installed integrally with the indoor-side foundation F when constructing the foundation F, and a cover component 103 that is attached to the opening of this frame component 102, as shown in Figure 10.

[0005] As such, conventional foundation inspection hatch members 101 are composed of at least two members, a frame member 102 and a cover member 103. In order to ensure airtightness, the frame member 102 and the cover member 103 must be tightly fitted together, which creates the problem of making the cover member 103 difficult to attach and detach, making it difficult to handle.

[0006] To address this problem, the present inventors previously proposed a foundation inspection hatch component that is easy to handle while ensuring airtightness when constructed from two components (see Patent Document 3).

[0007] Like the conventional foundation inspection hatch members described in Patent Documents 1 and 2, this foundation inspection hatch member 1 is installed so as to become one with the foundation when it is constructed, more specifically so as to become one with the indoor foundation when it is constructed.As shown in Figures 3 to 9, it comprises two members: a frame member 2 serving as a frame member, and a cover member 3 that is fitted inside this frame member 2.By fitting this cover member 3 into the frame member 2, the inspection hatch portion formed by the opening in the frame member 2 is maintained in an airtight state, and grooves 32 parallel to the side surfaces are formed on both ends of the front surface of the cover member 3 from the front side to the rear side of the cover member 3, and clamping portions 34a, 34b are formed on both sides of the groove 32 along this groove 32.

[0008] The frame member 2 and cover member 3 that constitute the foundation inspection hatch member 1 are molded using a synthetic resin material, preferably a foamed resin material that has insulating properties and some deformability (e.g., EPS (Expanded Polystyrene (bead method expanded polystyrene))). The groove 32 formed in the cover member 3 is formed to a certain depth, for example, 50 to 95% of the thickness of the cover member 3, preferably about 70 to 90% (in this embodiment, about 80% (a depth of 120 mm for a cover member 3 with a thickness of 150 mm)) so that the fit of the cover member 3 with the frame member 2 can be loosened by applying a clamping force by holding the clamping portions 34a and 34b and deforming the outer part of the cover member 3 inward. As a result, when the foundation inspection hatch member 1 is made up of two members, airtightness can be ensured while the cover member 3 can be deformed by holding the clamping portions 34a and 34b, thereby loosening the fit of the cover member 3 with the frame member 2, making it easy to attach and detach the cover member 3 and improving handleability.

[0009] Fitting and locking portions 23, 33 are provided on the side of the inner peripheral surface 21 of the frame member 2 and the side of the outer peripheral surface 31 of the cover member 3. In this embodiment, a concave fitting and locking portion 23 is provided on the frame member 2, and a convex fitting and locking portion 33 is provided on the cover member 3. This allows the cover member 3 to be firmly fixed to the frame member 2, and by applying a clamping force by holding the clamping portions 34a and 34b, the outer part of the cover member 3 is deformed inward, thereby releasing the locked state of the mating locking portions 23 and 33, making it easy to attach and detach the cover member 3.

[0010] By forming step portions 21a, 31a on the inner surface 21 of the frame member 2 and the outer surface 31 of the cover member 3, the gap between the frame member 2 and the cover member 3 becomes labyrinth-shaped, thereby improving airtightness. The rear side of the outer peripheral surface 31 of the cover member 3 is formed with a tapered surface 31b, and a bulge portion 31c is formed at the location where the groove 32 of the tapered surface 31b opens, and a recess portion 21c into which this bulge portion 31c fits is formed on the rear side of the inner peripheral surface 21 of the frame member 2. This allows the lid member 3 to be easily attached and detached, while the gap between the frame member 2 and the lid member 3 at the opening of the groove 32 on the tapered surface 31b also becomes labyrinth-shaped, improving airtightness.

[0011] In addition, by forming a recess 22 on the outer peripheral surface of the frame member 2 into which the poured foundation concrete can enter, the frame member 2 of the foundation inspection hatch member 1 can be installed so that it is reliably integrated with the foundation when the foundation is constructed.

[0012] When performing underfloor inspection work, this foundation inspection hatch member 1 can be removed from the frame member 2 by holding the clamping portions 34a, 34b of the cover member 3 and deforming the cover member 3, thereby loosening the fit of the cover member 3 to the frame member 2. This allows for the formation of an inspection hatch section consisting of an opening in the frame member 2, making it possible to carry out work under the floor on the back side of the foundation inspection hatch member 1, for example, under the floor of a bathroom using a unit bath or the like. Furthermore, after performing inspection work under the floor, the cover member 3 can be fitted into the frame member 2, thereby maintaining the airtight state of the inspection hatch portion formed by the opening in the frame member 2, i.e., the airtight state of the front and back sides of the foundation inspection hatch member 1. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] Utility Model Registration No. 3078345 [Patent Document 2] Patent No. 5281813 [Patent Document 3] Patent No. 7016011 Summary of the Invention [Problem to be solved by the invention]

[0014] Incidentally, the conventional foundation inspection hatch members 1, 101 described in the above Patent Documents 1 to 3 are installed in the concrete pouring space formed by the formwork with the cover members 3, 103 attached to the openings of the frame members 2, 102 when pouring concrete to construct the foundation F, and concrete is poured into the concrete pouring space so that the frame members 2, 102 are installed as one unit with the foundation F.

[0015] However, at that time, part of the concrete (slag) poured into the concrete pouring space passes through the minute gaps that occur between the formwork and the surface of the frame member facing the formwork and enters the fitting portion between the frame member 2, 102 and the cover member 3, 103, and hardens as it is, causing the cover member 3, 103 This caused a problem that the frame members 2 and 102 could not be removed.

[0016] In view of the problems associated with the above-mentioned conventional foundation inspection hatch components, the present invention aims to provide a foundation inspection hatch component that, when pouring concrete into a concrete pouring space formed by a formwork to construct a foundation, can prevent a portion of the concrete (slag) poured into the concrete pouring space from entering the fitting between the frame member and the cover member through a tiny gap that occurs between the formwork and the surface of the frame member facing the formwork. [Means for solving the problem]

[0017] In order to achieve the above-mentioned object, the foundation inspection hatch member of the present invention comprises a frame member that is installed so as to be integrated with the foundation when the foundation is constructed, and a cover member that is fitted inside the frame member, and by fitting the cover member into the frame member, the inspection hatch portion formed by the opening in the frame member is maintained in an airtight state, and is characterized in that the frame member has a contact deformation portion that protrudes toward the formwork from the surface of the frame member that faces the formwork used when pouring concrete to construct the foundation, and a groove formed on the back of the contact deformation portion.

[0018] In this case, the frame member may be formed by dividing it into an outer peripheral frame member and an inner peripheral frame member, and the outer peripheral frame member may be provided with the contact deformation portion and the groove.

[0019] Furthermore, the outer peripheral frame member can be formed by dividing it into an upper horizontal frame member and a vertical frame member. [Effects of the Invention]

[0020] According to the foundation inspection hatch member of the present invention, the frame member is provided with a contact deformation portion that protrudes toward the formwork from the surface of the frame member facing the formwork used when pouring concrete to construct the foundation, and a groove formed on the back surface of the contact deformation portion.Therefore, when pouring concrete into the concrete pouring space formed by the formwork to construct the foundation, it is possible to prevent some of the concrete (slag) poured into the concrete pouring space from passing between the formwork and the surface of the frame member facing the formwork and entering the fitting between the frame member and the cover member, thereby eliminating the problem that existed with conventional foundation inspection hatch members, where the cover member could not be removed from the frame member. [Brief explanation of the drawings]

[0021] [Figure 1] 1 shows one embodiment of a foundation inspection hatch member of the present invention, where (a) is a front view, (b) is a plan view, (c) is a right side view, (d) is a cross-sectional view, (e) is a vertical cross-sectional view, and (f) is a rear view. [Figure 2]FIG. [Figure 3] FIG. 1 is an overall perspective view showing a conventional foundation inspection hatch member. [Figure 4] The frame part of the foundation inspection hatch component is shown, where (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a left side view, and (e) is a right side view. [Figure 5] FIG. 2 is a rear view showing the frame portion of the foundation inspection hatch member. [Figure 6] 4(a) shows a cross-sectional view taken along line AA in FIG. 4(b), and FIG. 4(b) shows a cross-sectional view taken along line BB in FIG. 4(b). [Figure 7] The cover member of the foundation inspection hatch member is shown, where (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a left side view, and (e) is a right side view. [Figure 8] FIG. 2 is a rear view showing the cover member of the foundation inspection hatch member. [Figure 9] 7(b) is a cross-sectional view taken along the line AA in FIG. 7(b), showing the frame portion of the cover member of the foundation inspection hatch member. [Figure 10] 1A and 1B show a conventional foundation inspection hatch member, in which (a) is an external perspective view of the foundation inspection hatch member when installed, and (b) is a front cross-sectional view of the member with the cover member removed. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an embodiment of the foundation inspection hatch member of the present invention will be described with reference to the drawings.

[0023] 1 and 2 show an embodiment of a foundation inspection hatch member of the present invention. This foundation inspection hatch member 1, like the conventional foundation inspection hatch member 1 shown in Figures 4 to 10 (Patent Document 3), is installed so as to become one with the foundation when the foundation is constructed, more specifically so as to become one with the indoor side of the foundation when the foundation is constructed, and is provided with two members: a frame member 2 as a frame member, and a cover member 3 as a cover member that is fitted inside this frame member 2, and by fitting this cover member 3 into the frame member 2, the inspection hatch portion formed by the opening in the frame member 2 is maintained in an airtight state.

[0024] This foundation inspection hatch member 1 is formed by dividing the frame member 2 into an outer peripheral frame member 2A and an inner peripheral frame member 2B, and the outer peripheral frame member 2A is provided with a contact deformation portion 24 that protrudes toward the formwork from the surface of the frame member 2 facing the formwork used when pouring concrete to construct the foundation, and a groove 25 formed on the back surface of this contact deformation portion 24.

[0025] Furthermore, in the foundation inspection hatch member 1 of this embodiment, the outer peripheral frame member 2A is formed by dividing it into an upper horizontal frame member 2A1 and vertical frame members 2A2 on both sides.

[0026] The contact deformation portion 24 is formed into a shape that widens toward the end, with the protrusion dimensions at the upper end and side end sides gradually increasing. The protrusion dimension is set to be several millimeters to several tens of millimeters (in this embodiment, 5 mm (thickness dimension W1 of frame member 2: 150 mm, thickness dimension W2 of outer peripheral frame member 2A at the position of abutting deformation portion 24: 160 mm)).

[0027] The groove 25 is intended to allow the contact deformation portion 24 that contacts the surface of the formwork to deform when the foundation inspection hatch member 1 is installed in the concrete pouring space formed by the formwork with the cover member 3 attached to the opening of the frame member 2 when pouring concrete to construct the foundation, and is formed into a shape (in this embodiment, a V-shape) having dimensions (volume) that are approximately the same as or larger than the protrusion dimensions (volume) of the contact deformation portion 24.

[0028] In this embodiment, taking into consideration moldability during manufacturing, the frame member 2 is formed by dividing it into an outer frame member 2A and an inner frame member 2B, and the outer frame member 2A is further formed by dividing it into an upper horizontal frame member 2A1 and vertical frame members 2A2 on both sides.However, all or some of these may be formed integrally, or the contact surfaces between the outer frame member 2A (upper horizontal frame member 2A1 and vertical frame member 2A2) and the inner frame member 2B may be formed into an interlocking structure.

[0029] Like conventional foundation inspection hatch components 1, 101, this foundation inspection hatch component 1 is installed so that it becomes one with the foundation when the foundation is constructed, more specifically so that it becomes one with the indoor side of the foundation when the foundation is constructed.

[0030] When installing the foundation inspection hatch member 1, first, formwork to be used when pouring concrete to construct the foundation is installed so that the distance between opposing formworks is the specified foundation width (120 mm or more (in this embodiment, 150 mm, the same as the thickness dimension W1 of the frame member 2 of the foundation inspection hatch member 1)), thereby forming a concrete pouring space. Next, the foundation inspection hatch member 1 is installed at a predetermined position in the concrete pouring space with the cover member 3 attached to the opening of the frame member 2. At this time, the contact deformation portion 24 contacts the surface of the formwork and deforms, and is pushed toward the groove 25. However, the outer periphery of the outer frame member 2A (the upper horizontal frame member 2A1 and the vertical frame member 2A2) contacting the surface of the formwork maintains a watertight state. It is made to maintain. In this state, concrete is poured into the concrete pouring space. At this time, the outer periphery of the outer periphery frame member 2A abutting the surface of the formwork maintains a watertight state, so that part of the concrete poured into the concrete pouring space (slag) can be prevented from passing between the formwork and the surface of the frame member 2 facing the formwork and entering the fitting portion between the frame member 2 and the cover member 3.

[0031] When inspecting under the floor, the clamping portions 34a, 34b of the cover member 3 are held and the cover member 3 is deformed to loosen the fit of the cover member 3 with respect to the frame member 2, and the cover member 3 is removed from the frame member 2, thereby forming an inspection hatch portion formed by the opening in the frame member 2, and work can be performed under the floor on the back side of the foundation inspection hatch member 1, for example, under the floor of a bathroom using a unit bath or the like. Furthermore, after performing inspection work under the floor, the cover member 3 can be fitted into the frame member 2, thereby maintaining the airtight state of the inspection hatch portion formed by the opening in the frame member 2, i.e., the airtight state of the front and back sides of the foundation inspection hatch member 1.

[0032] Other configurations and operations of the foundation inspection hatch member 1 of this embodiment are similar to those of the conventional foundation inspection hatch member 1 shown in Figs. 4 to 10 (Patent Document 3).

[0033] The above describes the foundation inspection hatch components of the present invention based on their embodiments, but the present invention is not limited to the configurations described in the above embodiments, and the configuration can be changed as appropriate within the scope of the spirit of the present invention. [Industrial Applicability]

[0034] The foundation inspection hatch component of the present invention has the characteristic that, when concrete is poured into the concrete pouring space formed by the formwork to construct a foundation, part of the concrete (slag) poured into the concrete pouring space can be prevented from entering the fitting between the frame member and the cover member through the tiny gap that occurs between the formwork and the surface of the frame member facing the formwork.Therefore, the component can be suitably used as a foundation inspection hatch component that is installed so as to be integrated with the foundation when the foundation is constructed, for example, as an insulated foundation inspection hatch component. [Explanation of symbols]

[0035] 1 Foundation inspection hatch parts 2 Frame members 2A Outer frame member 2A1 Upper horizontal frame member 2A2 Vertical frame member 2B Inner frame member 21 Inner surface 21a Stepped section 21c Depression 22 recess 23 Fitting locking portion 24 Contact deformation part 25 groove 3 Cover member 31 Outer surface 31a Stepped section 31b Tapered surface 31c bulge 32 Groove 33 Fitting locking portion 34a Clamping part 34b Clamping part

Claims

1. A component for a foundation inspection hatch comprises a frame member that is installed so as to be one with the foundation when the foundation is constructed, and a cover member that is fitted inside the frame member, and by fitting the cover member into the frame member, the airtight state of the inspection hatch portion formed by the opening of the frame member is maintained, characterized in that the frame member has a contact deformation portion that protrudes toward the formwork from the surface of the frame member that faces the formwork used when pouring concrete to construct the foundation, and a groove formed on the back of the contact deformation portion.

2. A member for a foundation inspection hatch as described in claim 1, characterized in that the frame member is formed by dividing it into an outer frame member and an inner frame member, and the outer frame member is provided with an abutment deformation portion and a groove.

3. 3. A member for a foundation inspection hatch as described in claim 2, characterized in that the outer peripheral frame member is formed by dividing it into an upper horizontal frame member and a vertical frame member.

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