JP6691366B2 - Wall access door - Google Patents

Description

  The present invention relates to a wall inspection port.

  As a wall inspection port installed on the wall surface of a house, the one described in Patent Document 1 is known. In this conventional example, the wall inspection port is formed of an outer frame fitted to a wall opening formed in the wall and a lid plate (lid body).

  The upper and lower edges of the outer frame are provided with engaging standing pieces whose free ends are located diagonally rearward, and the lid body includes an upper inclined engaging piece and an elastic engaging member provided on the upper and lower back surfaces of the lid body. And is elastically locked to the engaging standing piece.

JP, 2011-179295, A

  However, in the above-described conventional example, since the elastic engaging member is arranged on the back surface of the lid and is not visible, the elastic engaging member of the lid lifted during the mounting operation is elastically attached to the engaging stand of the outer frame. There is a problem that mounting workability is very poor because it is necessary to lock while deforming and to lock the upper inclined engagement piece to the engagement standing piece at the upper end of the outer frame.

  In particular, when the lid is large and heavy, the lid becomes difficult to handle, further deteriorating workability.

  The present invention has been made to solve the above drawbacks, and an object of the present invention is to provide an inspection port for a wall, which has a good operability for attaching and detaching a lid.

According to the present invention, the above objects are
An outer frame 4 which is formed in a frame shape having an inspection opening 1 in the center and is fitted and fixed to a wall opening 3 opened in a wall surface 2;
A lid 5 detachably attached to the outer frame 4 to close the inspection opening 1 of the outer frame 4,
At the lower end of the lid 5, a hinge protrusion 7 is provided, the lower end of which is rotatably supported in a locking recess 6 formed at the lower edge of the inspection opening 1 of the outer frame 4. With
At the upper edge of the lid 5 and the upper edge of the inspection opening 1 of the outer frame 4, a lid connecting portion 8 for releasably holding the standing state of the lid 5 is provided.
In addition, the rear wall of the locking recess 6 is achieved by providing a wall inspection port formed by an inclined surface that gradually moves rearward as it goes upward .

  The wall inspection port is formed by closing the inspection opening 1 of the outer frame 4 fixed to the wall surface 2 with the lid 5. The lid 5 is provided with a hinge protrusion 7 at the lower end thereof, and a locking recess 6 is formed in the outer frame 4. The lid 5 is used for the hinge after the hinge protrusion 7 is dropped into the locking recess 6. The protrusion 7 is rotated around a contact portion between the protrusion 7 and the bottom wall of the locking recess 6, and the upper end is connected to the outer frame 4 by using the lid connecting portion 8 to be attached.

Therefore, in the present invention, since the lid body 5 can be mounted only by inserting the lower end into the locking recess 6 and then rotating the upper end portion, even if the lid body 5 is large or heavy, it can be easily mounted. Can be installed.
Further, since it becomes possible to perform the mounting operation of the lid body 5 that is dropped so that the tip of the hinge projecting piece 7 is along the rear wall formed of the inclined surface, the mounting operability is further improved.

Further, as another aspect of the present invention for achieving the above object,
An outer frame 4 which is formed in a frame shape having an inspection opening 1 in the center and is fitted and fixed to a wall opening 3 opened in a wall surface 2;
A lid 5 detachably attached to the outer frame 4 to close the inspection opening 1 of the outer frame 4,
The lower end of the cover body 5 is formed to protrude hinge projection piece 7 the lower end is rotatably supported in the engagement recess 6 formed on the lower edge of the inspection opening 1 of the outer frame 4 , The lid 5 has a lower end front end as a rotation fulcrum, and
At the upper edge of the lid 5 and the upper edge of the inspection opening 1 of the outer frame 4, a lid connecting portion 8 for releasably holding the standing state of the lid 5 is provided.
In addition, the entire peripheral edge of the lid 5 contacts the outer frame 4 via the packing 9 to close the gap between the outer periphery of the lid 5 and the outer frame 4, and
The packing 9 corresponding to the upper edge of the back surface of the lid body 5 and both side edges of the back surface of the lid body 5 correspond to the corresponding pieces of the outer frame facing the front surface of the inspection opening 1, and the packing 9 corresponding to the lower edge of the lid body 5, At the rear lower end of the lower edge of the lid body 5, a wall inspection port can be configured to be fixed with the opposite surface to the fixed surface as the pressed surface .

  In the present invention, by interposing the packing 9 at the boundary between the lid 5 and the outer frame 4, the airtightness of the inspection port inner space can be improved.

  Further, in the present invention in which the lid 5 is attached by a rotating operation with the tip of the hinge projection 7 as the center of rotation, the packing is made by utilizing the lever action with the height of the lid 5 as the arm length. A large crushing force for 9 can be obtained. As a result, it is possible to provide a sufficient amount of bending with respect to the packing 9 with a small operating force, and it is possible to exhibit sufficient sealing performance without lowering the mounting workability.

Further, the packing 9 includes the upper edge of the back surface of the lid body 5, and the corresponding pieces of the outer frame 4 facing both side edges of the back surface,
The lid 5 is fixed to a corresponding piece of the outer frame 4 facing the bottom surface of the fitting portion to the inspection opening 1.

  In the present invention in which the lid body 5 is rotated around the tip of the hinge projecting piece 7 protruding from the lower end of the lid body 5 to shift to the closed door posture, the upper edge portion and both side edge portions of the lid body 5 are closed and moved. Accordingly, the lower end portion of the lid body 5 moves forward with respect to the contact portion between the lower end portion of the lid body 5 and the lower end portion of the outer frame 4 while approaching the opening of the outer frame 4 from the front direction. Since it is biased downward, it approaches the lower edge of the outer frame 4 from substantially above.

  Therefore, the packing 9 corresponding to the upper edge and both side edges of the lid body 5 is fixed to the upper edge of the back surface of the lid body 5 and the corresponding pieces facing both side edges of the back surface, and corresponds to the lower edge of the lid body 5. By fixing the packing 9 to a corresponding piece facing the bottom surface of the fitting portion of the lid 5 to the inspection opening 1, each packing 9 is attached to the outer frame 4 on the opposite side to the fixing surface. It can be a pressed surface.

As a result, when the lid 5 is closed, the packings 9 are loaded with almost only the compressive force, and the displacement force is not applied. Therefore, it is possible to effectively prevent the packing 9 from being displaced due to long-term use. Will be possible.
in this case,
At the lower end of the outer frame 4, a depth piece 16a extending in the depth direction, a rear flange 18 extending upward from the rear end of the depth piece 16a, and a horizontal flange 19 extending rearward from the rear flange 18 to the frame are provided.
The packing 9 corresponding to the lower edge of the lid 5 may form a wall inspection port fixed to the horizontal flange 19 .
further,
The outer frame 4 includes depth pieces 16a extending in the depth direction at upper and lower ends, a rear flange 18 extending inward from the rear end of the depth piece 16a, a horizontal flange 19 extending rearward from the rear flange 18, and a horizontal plane. A vertical flange 20 extending inward from the flange 19 is provided,
The packings 9 corresponding to the upper edge of the back surface and both side edges of the back surface of the lid body 5 can form a wall inspection port fixed to the vertical flange 20 .

Furthermore, as another aspect of the present invention for achieving the above object,
A shield flange 10 is provided at the lower end of the outer frame 4 as a front wall of the locking recess 6 to shield the hinge protrusion 7 from the external view.
The front wall and the rear wall of the locking recess 6 can form a wall inspection port that is arranged at an interval that allows the hinge protrusion 7 to move back and forth.

  In the present invention, since the hinge projection piece 7 of the lid body 5 is covered by the shielding flange 10 provided on the outer frame 4 in the state where the lid body 5 is mounted, the appearance can be kept beautiful. .

  Further, the gap formed between the front wall and the rear wall of the locking recess 6 is a space for moving the tip of the hinge projection 7 forward and backward when the hinge projection 7 is dropped into the locking recess 6. To allow the tilting of the lid body 5.

  As a result, when the lid 5 is mounted, the work for inserting the hinge projecting piece 7 into the locking recess 6 with the upper end tilted forward can be performed, so that the mounting workability is improved and further, When the packing 9 is interposed between the back surface of the lid 5 and the outer frame 4, the tip of the hinge protrusion 7 is locked by the forward biasing force received by the lid 5 from the packing 9 during the mounting operation. Since it is pressed against the front end of the recessed portion 6, rattling or the like does not occur and airtightness is maintained.

Furthermore, as another aspect of the present invention for achieving the above object,
When the rear wall of the locking recess 6 constitutes a wall inspection port formed by an inclined surface that gradually moves rearward as it goes upward, the tip of the hinge projection 7 is placed along the rear wall composed of the inclined surface. Since the mounting operation of the lid body 5 dropped in this way becomes possible, the mounting operability is further improved.

  Further, since the locking recess 6 of the outer frame 4 fixed to the wall surface 2 is often located below the wall surface 2, tilting the rear wall makes it easier to confirm the position of the rear wall when looking down from above. Therefore, the workability of mounting the lid 5 is improved.

Furthermore, as another aspect of the present invention for achieving the above object,
A wall inspection port connected to either one of the outer frame 4 and the upper edge of the lid 5 by a detachable fall prevention wire 11 can be formed.

  In the present invention, the fall prevention wire 11 connects between the lid 5 and the upper edge of the outer frame 4, that is, the rotation end side when the lid 5 is rotated about the tip of the hinge projecting piece 7. Thus, it is possible to maintain the state in which the upper edges are opened. Since the connection is made by the fall prevention wire 11, the lid 5 is prevented from accidentally falling in the unlocked state, and the surrounding floor surface or wall surface 2 is not scratched.

Further, the lid connecting portion 8 that holds the closed state of the lid 5 can have various configurations.
The lid connecting portion 8 includes a lock insertion opening 12 formed in the outer frame 4,
A stopper slider 13 mounted on the upper end of the lid body 5 so as to be slidable in the lateral direction,
If the stopper slider 13 can be inserted through the lock insertion opening 12 and is provided with the lock projection 14 that is locked to the outer frame 4 in the lateral state after insertion, the opening and closing operation is easy. become.

  According to the present invention, the lid body can be mounted simply by rotating the lid body while the hinge protrusion is locked in the locking recess of the outer frame, and further, the lid body is locked in the rotating posture. Since it can be removed only by pulling it out from the concave portion, it is possible to improve the operability of mounting and removing the lid.

It is a figure which shows this invention, (a) is a front view, (b) is a perspective view in a lid open state. It is an exploded perspective view of a wall inspection port. It is a figure which shows an outer frame, (a) is a front view, (b) is a 3B direction arrow view of (a). 3A is an enlarged sectional view of a main part of the outer frame, FIG. 3A being a sectional view taken along line 4A-4A in FIG. 3A, and FIG. 3B being a sectional view taken along line 4B-4B in FIG. It is a figure which shows a cover body, (a) is a front view, (b) is a 5B direction arrow view of (a). 5A is an enlarged sectional view of a main part of the lid, FIG. 5A is a sectional view taken along line 6A-6A in FIG. 5A, and FIG. 5B is a sectional view taken along line 6B-6B in FIG. 5A. FIG. 6 is a view showing a mounting process of the lid body, (a) is an enlarged cross-sectional view of a main part showing a state in which the hinge projection is fitted in the locking recess, and (b) is an enlarged cross-sectional view of a main part showing a state where the attachment is completed. It is a figure. 1A is an enlarged view of an 8A portion of FIG. 1A in an unlocked state, FIG. 8B is a sectional view taken along line 8B-8B of FIG. 8C in a locked state, and FIG. 8) is a cross-sectional view taken along line 8C-8C of FIG.

  As shown in FIG. 1 and below, the wall inspection port includes an outer frame 4 fitted and fixed to a wall opening 3 formed in a vertical wall of a house, and a lid body 5 attached to the inspection opening 1 of the outer frame 4. Have and. In the present example, the wall opening 3 is opened so that the upper and lower edges thereof are along the wooden base 2a arranged on the back surface of the wall surface 2.

  One end of the fall prevention wire 11 is connected to the wood base 2a on the upper edge side via a hook-shaped metal fitting 15. A spring hook 11a is fixed to the tip of the fall prevention wire 11.

  As shown in FIG. 3, the outer frame 4 is formed by connecting the four outer frame members 16 in a rectangular shape through the corner connecting fittings 4a to form the above-described inspection opening 1 in the central portion. In this example, as shown in FIG. 4, each outer frame member 16 is a mold material formed by extruding an aluminum material, and extends from the front end of the depth piece 16a toward the outer side of the frame with the depth piece 16a extending in the depth direction when the frame is formed. And a projecting outward flange 16b.

  Further, each outer frame member 16 is provided with an inward flange 16d by extending the base end of the depth piece 16a of the outward flange 16b inwardly of the frame, and the outer frame member 16 of the outer frame member 16 disposed at the upper edge is provided. The inward flange 16d is provided with two lock insertion openings 12 that are notched toward the lower end edge and that cooperate with a stopper slider 13 to be described later to configure the lid connecting portion 8 (FIG. 3). , 8).

  As shown in FIG. 4, the outer frame 4 is fixed vertically by fitting the depth piece 16a of each outer frame member 16 into the wall opening 3 and the outward flange 16b along the wall surface 2. The outer frame member 16 to be arranged is connected to the wooden base 2a by using a fixing member 17.

  In order to prevent a gap from being generated between the wall surface 2 and the outward flange 16b after the outer frame 4 is fixed, a packing 16e fixed to the back surface of the outward flange is provided between the outward flange 16b and the wall surface 2. Intervened.

  In FIG. 4, reference numeral 16c denotes a tapping screw for fixing the fixing member 17 to the wooden base 2a, and 16f denotes a screw for connecting the fixing member to the outer frame 4.

  Further, at the rear end of the depth piece 16a of the outer frame 4, a rear flange 18 extending inward of the frame, a horizontal flange 19 extending rearward from the rear flange 18 to the frame, and a vertical flange 20 extending inward from the horizontal flange 19 to the frame. The packing 9 is fixed to the vertical flanges 20 of the outer frame member 16 arranged at the upper edge, both side edges, and the horizontal flange 19 of the outer frame member 16 arranged at the lower edge, respectively.

  Further, the depth piece 16a of the outer frame member 16 arranged at the lower end edge of the outer frame 4 is provided with a slanting piece 21 that gradually moves backward as it goes inward. In addition, the surface of the depth piece 16a is the bottom surface, the back surface of the inward flange 16d is the front wall, and the surface of the inclined piece 21 is the rear wall by the inward flange 16d functioning as the shielding flange 10 of the hinge projecting piece 7 of the lid 5. A groove-shaped locking recess 6 is formed.

  The space between the base end of the inclined piece 21 and the inward flange 16d is such that when the hinge projection piece 7 of the lid 5 described later is inserted, the hinge projection piece 7 can move in the front-rear direction. It is set to the size that occurs.

  In this example, the case where the rear wall of the locking recess 6 is formed by the inclined piece 21 is shown, but it is also possible to form it as a vertical wall parallel to the inward flange 16d. Shows the case where it is formed over the entire length, but it is also possible to form it discontinuously by arranging rear wall members separately formed as piece-shaped members at appropriate intervals.

  On the other hand, as shown in FIG. 2, the lid 5 has a board 24 in which the openings of the inner frame 23, which are four inner frame members 22 framed in a rectangular shape by using the corner connecting fittings 23a, like the outer frame 4. It is formed by closing. For the board 24, a finishing material that forms the surface of the wall surface 2 cut out when the wall opening 3 is formed is used.

  As shown in FIG. 6, the inner frame member 22 extends outward from the front end of the depth piece 22a toward the inside and outside, and extends outward from the rear end edge of the depth piece 22a and the inward flange 22b. Has a rear flange 22d that is bent forward, and the board 24 is fixed by pressing the back surface thereof with a board pressing metal member 25 made of an L-shaped angle member that is connected to the depth piece 22a by using a screw 22e. It

  In order to prevent the occurrence of a gap between the board 24 mounted in the inner frame 23 and the inner frame 23, a packing fixed to the back surface of the inward flange 22b is provided between the inward flange 22b and the board 24. 22f is interposed.

  Further, the hinge projection piece 7 is extended to the outward flange 22c of the inner frame member 22 arranged at the lower end edge of the inner frame 23. The hinge projecting piece 7 is retracted slightly rearward from the outward flange 22c and then extends downward. A bent end portion 7a is formed at the lower end so as to curl forward. The hinge protrusion 7 is formed to be slightly taller than the height dimension of the inward flange 16d of the outer frame 4 described above.

  A wire connecting piece 22h for detachably connecting the spring hook 11a of the fall prevention wire 11 and a stopper slider 13 are attached to the inner frame member 22 arranged at the upper edge. As described above, the stopper slider 13 cooperates with the lock insertion opening 12 to form the lid connecting portion 8, and as shown in FIGS. 5 and 6, the operation portion 13b arranged in front of the base portion 13a, It has guide projections 13c protruding at the front and rear ends of the base portion 13a, and the guide projections 13c are locked to the stopper flanges 22g of the inner frame member 22 so that the depth piece 22a is located between the locked position and the unlocked position. Is slidably attached (see FIG. 6A).

  Further, a lock protrusion 14 that bulges upward is provided at the front end of the base portion 13a, and an inward flange of the outer frame 4 is provided between the front end surface of the lock protrusion 14 and the back surface of the operation portion 13b. A fitting groove 13d into which 16d can be fitted is formed.

  Further, as shown in FIG. 6A, the operation portion 13b is formed with a through hole 26 communicating with the opening 14a formed at the upper end of the lock protrusion 14. In the through hole 26, when the stopper slider 13 is in the locked state, the surface of the outer frame 4 is exposed by being closed by the outer frame 4, and when in the unlocked state, the lock insertion opening 12 and the opening 14a of the lock protrusion 14 are formed. Since the state inside the inspection port appears, the locked or unlocked state can be discriminated by the display state of the through hole 26.

  The lock protrusion 14 is formed so as to be inserted into the lock insertion opening 12 of the outer frame 4 described above, and when the stopper slider 13 is in the unlock position, the rotation locus of the lock protrusion 14 during the closing operation of the lid body 5. Passes through the lock insertion opening 12.

  In the above-described configuration, in the closing operation of the inspection opening of the outer frame 4 by the lid body 5, first, as shown in FIG. 7A, the hinge projecting piece 7 is locked with the entire lid body 5 tilted. After inserting into the recess 6, the upper end of the lid 5 is pressed in the closing direction, and the spring hook 11a attached to the tip of the fall prevention wire 11 is attached to the wire connecting piece while the lid 5 is rotated by an appropriate angle. After connecting to 22h (see FIG. 8C), the lid 5 is further pushed in the closing direction.

  The hinge projecting piece 7 can be inserted into the locking recess 6 by leading the tip of the hinge projecting piece 7, that is, the bent end 7a, to the predetermined position by sliding on the inclined piece 21. Therefore, when the inclined piece 21 is used as a sliding surface, the surface of the inclined piece 21 can be colored so that the sliding surface can be easily viewed when the lid 5 is attached.

  As described above, the hinge projecting piece 7 has a space for moving in the front-rear direction so that the hinge projecting piece 7 can be fitted into the locking recess 6 by inclining the lid body 5. When the lid 5 is rotated in the closing direction around the contact point between the bottom surface (the depth piece 16a) of the locking recess 6 and the tip of the hinge projection 7 of the lid 5, the packing 9 fixed to the outer frame 4 is rotated. Since the entire lid body 5 is pushed forward by this, the hinge projecting piece 7 moves forward, the front end of the bent end portion 7a presses against the back surface of the inward flange 16d of the outer frame 4, and rattling after mounting occurs. It is prevented.

  As shown in FIG. 7, as the lid 5 is closed and rotated, the peripheral edge of the back surface serves as a pressing surface against the packing 9 at the upper edge portion and both side edge portions, whereas the lower edge portion has a lid portion. The bottom surface of the lower end of 5, that is, the rear flange 22d of the inner frame serves as a pressing surface against the packing 9.

  On the other hand, as described above, in the packing 9, the vertical flanges 20 facing the front of the inspection opening are fixed surfaces at the upper edge and both side edges of the outer frame 4, and at the lower edge, the outer frame member 16 facing upward. Since the horizontal flanges 19 are fixed as the fixed surfaces, and the opposite surface is the pressed surface, the pressing direction of each packing 9 accompanying the closing operation of the lid body 5 is substantially opposite to the fixed surface. . Therefore, it is possible to minimize the load on the packing 9 in the sliding direction during the closing operation of the lid body 5, and it is possible to reliably prevent the packing 9 from slipping or dropping due to long-term use.

  The holding of the lid 5 rotated as described above at the closed position is performed by operating the stopper slider 13 as shown in FIG. As described above, when the lid 5 is closed while the stopper slider 13 is held in the unlocked position, the lock protrusion 14 of the stopper slider 13 moves from the lock insertion opening 12 arranged on the rotation locus to the inside of the outer frame 4. Enter.

  When the stopper slider 13 is slid to the lock position side from this state, the lock protrusion 14 moves to the back side of the inward flange 16d of the outer frame 4 and becomes in a locked state with the inward flange 16d, and thereafter, the lid body The closed state of 5 is retained.

  In the state where the lid 5 is closed, the inward flange 16d of the outer frame member 16 arranged at the lower edge functions as the shielding flange 10 to substantially cover the hinge projecting piece 7, and the hinge projecting piece 7 is external. Prevents deterioration of appearance due to exposure to

  In this example, the through hole 26 of the stopper slider 13 is provided to identify the locked or unlocked state, but an electronic device equipped with an operation indicator lamp such as an access lamp is housed in the wall inspection port. In this case, when the through hole 26 and the opening 14a of the lock projection 14 are made to match the through hole (not shown) formed in the outer frame 4 when locked, the electronic device operates when the lid 5 is closed. It will be possible to confirm.

  On the other hand, the removal of the lid body 5 can be easily performed by following the reverse of the above-described mounting operation. In this example, the center of gravity of the lid body 5 is in the frame depth direction with respect to the rotation fulcrum in the present example, in which the lower end front end portion of the lid body 5 is fitted into the inspection opening 1 of the outer frame 4 as a rotation fulcrum to assume a closed posture. Due to the bias, a moment is generated in the lid body 5 in the direction of maintaining the closed state. Therefore, the opening operation of the lid body 5 after unlocking by the stopper slider 13 is initially performed by pulling out the operation portion 13b of the stopper slider 13 toward the front side, but the reaction force of the packing 9 is set appropriately. As a result, when the stopper slider 13 is unlocked by the restoring force of the packing 9, the lid 5 can be tilted slightly forward to improve the opening operability.

  In the above embodiment, the inspection opening 1 is formed to be horizontally long, but it may be vertically long depending on the convenience of inspection and the like. Further, the number of the lid connecting portions 8 can be changed according to the length of the lid 8 and the like. Further, the board pressing member 25 can be attached to the depth piece 22a by using the double-sided tape instead of the screw 22e as described above, and in this case, the airtightness can be more easily enhanced.

1 Inspection opening 2 Wall surface 3 Wall opening 4 Outer frame 5 Lid 6 Locking recess 7 Hinge protrusion 8 Lid connecting part 9 Packing 10 Shielding flange 11 Fall prevention wire 12 Lock insertion opening 13 Stopper slider 14 Lock projection

Claims (7)

An outer frame that is formed in a frame shape with an inspection opening in the center and is fitted and fixed to the wall opening opened on the wall surface,
A lid that is detachably attached to the outer frame and closes the inspection opening of the outer frame,
At the lower end of the lid body, a hinge projecting piece whose lower end is rotatably supported in a locking recess formed at the lower end edge of the inspection opening of the outer frame is provided.
A lid connecting portion for releasably holding the standing state of the lid is provided at the upper edge of the lid and the upper edge of the inspection opening of the outer frame,
In addition, the rear wall of the locking recess is a wall inspection port formed by an inclined surface that gradually moves rearward as it goes upward . An outer frame that is formed in a frame shape with an inspection opening in the center and is fitted and fixed to the wall opening opened on the wall surface,
A lid that is detachably attached to the outer frame and closes the inspection opening of the outer frame,
At the lower end of the lid body, a hinge projection piece having a lower end rotatably supported in a locking recess formed at the lower edge portion of the inspection opening of the outer frame is provided, and the lid body is The lower end and the front end are used as fulcrums,
A lid connecting portion for releasably holding the standing state of the lid is provided at the upper edge of the lid and the upper edge of the inspection opening of the outer frame,
And, the entire peripheral edge portion of the lid body contacts the outer frame through the packing to close the gap between the lid body peripheral edge and the outer frame,
The packing corresponding to the upper back edge of the lid and both side edges of the back is the corresponding pieces of the outer frame facing the front of the inspection opening, and the packing corresponding to the lower edge of the lid is the lower edge of the lid. An inspection port for the wall fixed to the lower end on the rear side of each of the surfaces with the opposite surface against the fixed surface as the pressed surface . The outer frame lower end portion is provided with a depth piece extending in the depth direction, a rear flange extending upward from the rear end portion of the depth piece, and a horizontal flange extending rearward from the rear flange,
The wall inspection port according to claim 2, wherein a packing corresponding to a lower edge of the lid is fixed to the horizontal flange . The outer frame includes a depth piece extending in the depth direction at the upper and lower ends, a rear flange extending inward from the rear end of the depth piece, a horizontal flange extending rearward from the rear flange, and a horizontal flange extending inward from the frame. Is provided with an extending vertical flange,
The wall inspection port according to claim 2 or 3, wherein packings corresponding to the upper edge of the back surface and both side edges of the back surface of the lid are fixed to the vertical flange . At the lower end of the outer frame, a shielding flange that serves as a front wall of the locking recess and shields the hinge protrusion from the external view is provided.
The wall inspection port according to claim 1 or 2, wherein a front wall and a rear wall of the locking recess are arranged at an interval that allows the hinge protrusion to move forward and backward.   The wall inspection port according to claim 1 or 2, wherein one of the outer frame and the upper edge of the lid is connected with a detachable fall prevention wire. The lid connecting portion has a lock insertion opening formed in an outer frame,
A stopper slider mounted on the upper end of the lid so as to be slidable in the lateral direction,
The wall inspection port according to claim 1 or 2, wherein the stopper slider is provided with a lock protrusion that can be inserted through the lock insertion opening and that is locked to an outer frame in a laterally moved state after insertion.

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