Wall inspection hatches, installation methods for wall inspection hatches

Abstract

To provide a wall inspection opening and a method for constructing the wall inspection opening, which have the design property of a wall material and excellent durability against external force from the front side and the back side of the wall material.SOLUTION: A wall inspection opening is provided with a frame material 1 corresponding to an opening edge of an opening H of a wall material W, a metal plate 2 capable of opening and closing the opening H, and a magnet sheet 3 stuck to the surface of the metal plate 2, the frame material 1 has a frame material step part 11 formed in a circumferential shape along an opening edge, the metal plate 2 fits into the frame material step part 11 and is mounted, and the magnet sheet 3 is substantially flush with the surface of the frame material 1.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to, for example, a wall inspection opening in an apartment building.

Background Art

[0002] Conventionally, in buildings such as apartment buildings and commercial facilities, there is a wall inspection opening that is attached to an opening formed in a wall material in order to maintain and inspect wiring, piping, etc. arranged behind the wall material. A general wall inspection opening is of a frame type with a wide frame width or a joint type with a narrow frame width, and is made of metal such as aluminum or steel, and includes an outer frame provided in the opening and an inner frame that fits inside the outer frame. Inside the inner frame, a wall material cut out when forming the opening or a separately prepared gypsum board is fitted.

[0003] Also, for example, the wall inspection opening disclosed in Non-Patent Document 1 is of a type without joints, and includes a frame material corresponding to the opening edge of an opening in a wall material fixed to a wall base, a steel plate fixed to the wall base on the opening side from the frame material, and a board having a magnet attached to the steel plate. The board is flush with the wall material including the frame material. According to such a configuration, it is difficult to reduce the design quality of the wall material, and an effect of improving the opening and closing property of the opening by the board can be expected.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the wall inspection hatch described in Non-Patent Document 1 has a magnetic force that allows the board to be attached and detached by hand, and the contact area between the magnet and the steel plate is small compared to the opening area. Therefore, it may vibrate due to wind pressure from the front or back of the wall material, making it difficult to expect durability against a given external force. Thus, the inventor concluded that although the use of magnets is effective in realizing a jointless type, further improvement in durability against external forces is necessary.

[0006] Therefore, the object of the present invention is to provide a wall inspection opening and a method for constructing a wall inspection opening that have aesthetic appeal and excellent durability against external forces from the front and back sides of the wall material. [Means for solving the problem]

[0007] In other words, the wall inspection opening in the present invention comprises a frame material corresponding to the opening edge of the opening in the wall material, a metal plate that can open and close the opening, and a magnetic sheet attached to the surface of the metal plate. The frame material has a circumferentially formed stepped portion along the opening edge, the metal plate is fitted and attached to the stepped portion of the frame material, and the magnetic sheet is substantially flush with the surface of the frame material.

[0008] With this configuration, the metal plate fits into the stepped portion of the frame material, allowing it to be attached to the frame material without extending beyond the surface of the wall material. As the magnetic sheet becomes nearly flush with the surface of the frame material, the magnetic sheet can be decorated to blend in with the surface of the wall material regardless of the shape or design of the metal plate. This eliminates joints, does not detract from the appearance of the wall material, and is expected to reduce the impact of wind pressure from the front or back of the wall material.

[0009] Furthermore, it is desirable that the metal plate be attached via a stepped portion of the metal plate formed to face the stepped portion of the frame material. With this configuration, the heads of screws and bolts attached to the frame material will fit into the stepped portion of the metal plate, making it easy to attach a magnetic sheet to the flat surface of the metal plate without any protrusions, and it is also possible to cover the stepped portion of the metal plate with the magnetic sheet to make the heads of the screws and bolts less noticeable.

[0010] Furthermore, it is desirable that the metal plate has through holes formed on its surface, and the magnet sheet has protrusions formed to extend from the surface that adheres to the metal plate. With this configuration, it becomes easier to determine the position of the magnet sheet relative to the surface of the metal plate by using the through holes in the metal plate and the protrusions in the magnet sheet as references. This not only helps to avoid mistakes in attaching the magnet sheet, but also makes it easier to reattach the magnet sheet.

[0011] The method for constructing a wall inspection opening according to the present invention includes attaching a frame material corresponding to the opening edge of the opening in the wall material to the wall material, fitting a metal plate that can open and close the opening into the stepped portion of the frame material formed circumferentially along the opening edge, attaching a metal plate via a stepped portion of a metal plate formed facing the stepped portion of the frame material, fitting a projection formed so as to protrude from the surface of the magnetic sheet that adheres to the metal plate into a through hole formed on the surface of the metal plate, attaching the magnetic sheet to the surface of the metal plate, and attaching the wallpaper of the wall material to the surface of the frame material and the surface of the magnetic sheet that is flush with it.

[0012] This configuration allows for the pre-preparation of frame materials, metal plates, and magnetic sheets processed to predetermined dimensions and shapes; the position of the inspection opening can be determined by nailing the frame materials to the base material before installing the surface material of the wall; the mounting position of the metal plates to the frame materials can be determined via the stepped portion of the frame materials; the heads of screws and bolts can be housed in the stepped portion of the metal plates to prevent them from protruding from the surface of the metal plates; the attachment position of the magnetic sheets can be finely adjusted by combining the through-holes in the metal plates with the protrusions of the magnetic sheets; and the magnetic sheets covering the frame materials and metal plates can be expected to blend in with the wall material and become inconspicuous. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a wall inspection hatch and a method for constructing a wall inspection hatch that have aesthetic appeal as wall materials and excellent durability against external forces from the inside and outside of the wall material. [Brief explanation of the drawing]

[0014] [Figure 1] (a) is a plan view of a wall inspection opening in one embodiment of the present invention, and (b) is an end view of the X1-X1 portion of (a). [Figure 2] Figure 1 shows an end view of the X2-X2 section of the plan view (a) and an enlarged view of the Y section of (a) (b). [Figure 3] This is a schematic diagram showing the construction method for the wall inspection hatch mentioned above. [Modes for carrying out the invention]

[0015] The following describes a wall inspection hatch (hereinafter also referred to as "this wall inspection hatch") and its construction method in one embodiment of the present invention, with reference to Figures 1 to 3. In these figures, in cases where multiple identical parts exist, only one part is numbered. For the sake of explanation, designated parts and their connecting lines are sometimes shown as hidden lines (dashed lines) or imaginary lines (dotted lines). In the explanation, terms indicating directions such as up, down, vertical, horizontal, and perpendicular are generally based on ordinary buildings, and explanations will be given as appropriate when other references are used.

[0016] <Overview of the main wall inspection hatch> As shown in Figure 1, this wall inspection hatch is formed in the wall material W for maintenance and inspection of wiring, piping, etc., located on the back side of the wall material W. It comprises a frame material 1 corresponding to the opening edge of the opening H in the wall material W, a metal plate 2 that can open and close the opening H, and a magnetic sheet 3 that can be attached to the surface of the metal plate 2. In other words, this wall inspection hatch has a frame material 1 as the outer frame, and what fits inside the frame material 1 is not an inner frame but a metal plate 2 and a magnetic sheet 3, thus it differs from conventional frame type and joint type hatches.

[0017] The wall material W may be, for example, for forming walls of structures such as buildings, vehicles like ships and aircraft, and other structures, and may be made of any of resin, wood, paper, metal, or gypsum materials, or formed by combining two or more types of materials, without limiting dimensions such as thickness and area. The wall material W adopted for a building, for example, as shown in FIG. 1, includes elongated rod-shaped base materials W1 arranged in a plurality at a predetermined interval and plate-shaped surface materials W2 fixed to the base materials W1 with screws not shown in the figure. The opening H of the wall material W is a through-hole formed at a predetermined location of the wall material W with the frame material 1 as the opening edge, without limiting the vertical and horizontal dimensions and shape.

[0018] Note that the "building" includes, for example, apartment houses, detached houses, temporary houses, schools, hospitals, facilities for the elderly, facilities for the disabled, and various commercial facilities, without limiting the structure and size such as reinforced concrete structure, steel frame reinforced concrete structure, and steel frame structure. When the "building" is an apartment house, the specifications of the rooms in the apartment house where the present invention is implemented, such as the layout, size, structure, and construction method, are not limited.

[0019] Hereinafter, a detailed description will be given while taking into account the outline of this wall inspection opening.

[0020] <Details of the wall material W> As shown in FIG. 1, the base material W1 constituting the wall material W may be made of resin, metal, or wood, and may or may not be hollow. The surface material W2 may be a gypsum board (plaster board) or a metal panel, and may include wallpaper of a predetermined color and pattern pasted on this surface. The opening H is preferably formed at a location on the surface material S2 that does not interfere with the base material W1. As an example of the dimensions, the base material W1 is 40 mm square and the thickness of the surface material W2 is 9.5 mm.

[0021] <Details of the frame material 1> As shown in Fig. 1, the frame member 1 corresponds to the outer frame of the main wall inspection opening, is square in plan view, and has an opening H, so it corresponds to the opening edge of the opening H of the wall material W. Considering workability and durability, the frame member 1 is preferably made of resin. The frame member 1 is installed so as to be located on the indoor side of the living room R from the base material W1 and is fixed to the base material W1 with screws not shown in the figure. The frame member 1 has a shape flush with the surface material W2 at the portion adjacent to the surface material W2. In other words, it has the same thickness as the surface material W2 at the portion adjacent to the surface material W2.

[0022] The frame member 1 has a stepped shape in end view and, in the state of being installed on the base material W1, has a frame step portion 11 formed in a circumferential shape along the opening edge of the opening H so as to face at least the indoor side of the living room R. Preferably, it has another unnumbered frame step portion that coincides with the corner portion of the base material W1 so as to be easily installed on the base material W1. In other words, it has a frame step portion 11 located on the opening H side from the base material W1 and another frame step portion that does not interfere with the frame step portion 11 and faces the base material W1.

[0023] <Details of the frame step portion 11> As shown in Fig. 1, the frame step portion 11 is a portion for accommodating and attaching the metal plate 2 and is substantially the same shape as the metal plate 2 in plan view. The frame step portion 11 has a size such that the metal plate 2 does not protrude from the frame member 1 to the indoor side of the living room R. Preferably, it has an inner diameter 1 to 3 mm larger than the outer diameter of the metal plate 2 in plan view. It may be shallower or deeper than the thickness of the surface material W2, but is at least as deep as the total thickness of the metal plate 2 and the magnet sheet 3, and has a frame step flat portion 11a with a width equal to or greater than the width of the screw head B1 of the screw B for fixing the metal plate 2.

[0024] <Details of the metal plate 2> As shown in Figure 1, the metal plate 2 is a component that fits into the stepped portion 11 of the frame material and is attached so that the opening H can be opened and closed. It can be made of iron or steel as long as the magnetic sheet 3 is attached to it, but it is preferably made of stainless steel (SUS-430) which has high corrosion resistance. The metal plate 2 should have a thickness, strength, and shape that does not vibrate even when subjected to wind pressure from the interior side of the living room R or the back side of the wall material W when attached to the stepped portion 11 of the frame material with screws B. The metal plate 2 has a stepped portion 21 of the metal plate formed to face the stepped flat portion 11a of the frame material facing the stepped portion 11 of the frame material, and through holes 22 formed on its surface.

[0025] <Details of the stepped metal plate section 21> As shown in Figure 1, the metal plate step portion 21 is a portion that accommodates the screw head B1 of the screw B that fixes the metal plate 2, and is deep enough so that the screw head 1 does not protrude from the surface of the metal plate 2. The metal plate step portion 21 is a portion formed by bending the metal plate 2 into a strip shape so that the surface of the metal plate 2 is recessed from the interior side of the living room R toward the back side of the wall material W and protrudes from the back side of the metal plate 2. It has a metal plate step flat portion 21a with a width equal to or less than the width of the frame material step flat portion 11a, but it may also be a portion formed by pressing in a spot shape rather than a strip shape, and if the metal plate 2 is thicker than the screw head B1, the back side of the metal plate 2 may not protrude and it may simply be a portion formed so that the surface of the metal plate 2 is recessed without having a metal plate step flat portion 21a.

[0026] <Details of the through-hole 22> As shown in Figures 1 and 2, the through-hole 22 is a reference point for determining the attachment position of the magnet sheet 3 to the surface of the metal plate 2. It can be located anywhere on the surface of the metal plate 2, but preferably it is located on the vertical centerline of the surface of the metal plate 2 and towards the upper end. This makes it easier to align the upper corner portion, both ends, and lower corner portion of the magnet sheet 3 with the surface of the metal plate 3, using the center of the upper end of the magnet sheet 3 as a reference. The through-hole 22 may be formed, for example, by punching out the surface of the metal plate 2 with a press or by cutting with a drilling machine, and is not limited to these methods.

[0027] <Details of Magnetic Sheet 3> As shown in Figure 1, the magnetic sheet 3 is a component that covers the entire surface of the metal plate 2 and blends in with the appearance of the surface material W2, and is the same shape and dimensions as the metal plate 2 in plan view. The magnetic sheet 3 only needs to have a magnetic force sufficient to prevent it from peeling off due to an external force unexpectedly applied from the interior side of the living room R. The magnetic sheet 3 can be directly attached to the same wallpaper covering the surface material W2 with double-sided tape, or the wallpaper may be attached with starch paste via kraft paper that has been attached with a predetermined adhesive. The magnetic sheet 3 may be replaced when the wallpaper covering the surface material W2 is changed. The magnetic sheet 3 has a projection 31 formed to protrude from the surface that adheres to the metal plate 2.

[0028] <Details of the protrusion 31> As shown in Figures 1 and 2, the projection 31, together with the through hole 22 of the metal plate 2, is a part that determines the reference position for attaching the magnet sheet 3. When the magnet sheet 3 is attached to the surface of the metal plate 2, it is located at the same position as the through hole 22 on the metal plate 2 and only needs to be sized to fit into the through hole 22 of the metal plate 2. It may be made of resin or metal, and if it is made of metal, it may be a magnet. It may be attached to the magnet sheet 3 with a predetermined adhesive or by magnetic force.

[0029] <Effects and benefits of this wall inspection hatch> Therefore, as shown in Figure 1, by fitting the metal plate 2 into the stepped portion 11 of the frame material, the metal plate 2 is attached to the frame material 1 without extending beyond the surface of the wall material W, and the magnetic sheet 3 becomes substantially flush with the surface of the frame material 1. As a result, the magnetic sheet 3 can be decorated to blend in with the surface of the wall material W regardless of the shape and design of the metal plate 2, including its surface. This eliminates joints, does not impair the appearance of the wall material W, and makes it less susceptible to wind pressure from the front or back of the wall material W.

[0030] Furthermore, since the screw heads B1 of the screws attached to the frame material 1 fit into the stepped portion 21 of the metal plate, it is easy to attach the magnet sheet 3 to the flat surface of the metal plate 2 which has no protrusions, and the screw heads B1 can be made less noticeable by covering the stepped portion 21 of the metal plate with the magnet sheet 3. In addition, it is easy to determine the position of the magnet sheet 3 relative to the surface of the metal plate 2 by using the through hole 22 of the metal plate 2 and the protrusion 31 of the magnet sheet 3 as references, which not only prevents mistakes in attaching the magnet sheet 3 but also makes it easier to reattach the magnet sheet 3.

[0031] <Construction method for the main wall inspection hatch> As shown in Figure 3, the surface material W2 may or may not be attached, but first, the frame material 1, assembled to coincide with the corner portion of the base material W1, is attached with screws (not shown). Next, the metal plate 2 is placed in the stepped portion 11 of the frame material so as not to extend beyond the surface of the frame material 1, and attached with screws B via the stepped portion 21 of the metal plate 2. At this time, the entire stepped portion 21a of the metal plate faces the stepped flat portion 11a of the frame material, and the screw heads B1 of the screws B are contained within the stepped flat portion 21a of the metal plate and do not extend beyond the surface of the metal plate 2.

[0032] Next, before attaching the magnet sheet 3 to the surface of the metal plate 2, the protruding portion 31 of the magnet sheet 3 is placed in the through-hole 22 of the metal plate 2 to determine the reference position for attaching the magnet sheet 3 to the surface of the metal plate 2. Then, the magnet sheet 3 is gradually attached while aligning its corners and edges with the corners and edges of the surface of the metal plate 2, and the stepped portion 21 of the metal plate is covered, making the surface of the magnet sheet 3 flush with the surface of the frame material 1. Finally, the wallpaper to be attached to the surface material W2 is attached to the surface of the frame material 1 and the magnet sheet 3.

[0033] To perform maintenance and inspection of wiring, piping, etc. on the back of wall material W through this wall inspection hatch, simply remove the magnetic sheet 3, unscrew B, and remove the metal plate 2. Also, to change the wallpaper on wall material W to a different wallpaper, remove the magnetic sheet 3, attach the new wallpaper to another magnetic sheet, and then attach that sheet to the metal plate 2.

[0034] <Effects and benefits of the construction method for this wall inspection hatch> Therefore, the frame material 1, metal plate 2, and magnetic sheet 3, processed to predetermined dimensions and shapes, can be prepared in advance, the frame material 1 can be attached to the base material W1 to determine the position of the inspection opening before installing the surface material W2 of the wall material W, the mounting position of the metal plate 2 to the frame material 1 can be determined via the stepped portion 11 of the frame material, the screw heads B1 can be housed in the stepped portion 21 of the metal plate so that they do not protrude from the surface of the metal plate 2, the attachment position of the magnetic sheet 3 can be finely adjusted by combining the through-hole 22 of the metal plate 2 and the protrusion 31 of the magnetic sheet 3, and the magnetic sheet 3 covering the frame material 1 and metal plate 2 can be made to blend in with the wall material W1 and not stand out.

[0035] Furthermore, this embodiment is not limited to the above-described content, and includes any location, shape, and dimensions of parts, relationships between parts, construction plans, and relationships with other constructions, as long as equivalent effects can be obtained. [Explanation of Symbols]

[0036] W wall material W1 Substrate W2 Surface material 1 Frame material 11. Stepped section of frame material 11a Frame material stepped flat part 2 metal plate 21 Metal plate step part 21a Metal plate stepped flat part 22 Through hole 3 Magnetic Sheet 31 Protrusion

Claims

1. A frame material corresponding to the opening edge of the opening in the wall material, A metal plate with an opening that can be opened and closed, It comprises a magnetic sheet that is attached to the surface of a metal plate, The frame material has a stepped portion formed circumferentially along the opening edge. The metal plate is fitted and installed into the stepped section of the frame material. The magnetic sheet will be flush with the surface of the frame material. A wall inspection hatch characterized by the following features.

2. The metal plate is attached via a metal plate step portion that is formed to face the step portion of the frame material. The wall inspection opening according to feature 1.

3. The metal plate has through holes formed on its surface. The magnetic sheet has protrusions formed to extend from the surface that adheres to the metal plate. A wall inspection opening according to claim 1 or 2, characterized in that it is as described above.

4. A frame material corresponding to the opening edge of the opening in the wall material is attached to the wall material. A metal plate that can open and close the opening is housed in the stepped portion of the frame material formed circumferentially along the edge of the opening. The metal plate is attached via the stepped portion of the metal plate, which is formed to face the stepped portion of the frame material. A projection, formed so as to protrude from the side of the magnet sheet that adheres to the metal plate, is housed in a through-hole formed on the surface of the metal plate. By covering the stepped portion of the metal plate and attaching a magnetic sheet to the surface of the metal plate, The wallpaper material is attached to the surface of the frame material and to the surface of the magnetic sheet that is flush with it. Installation method for wall inspection hatches, including the following.

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