JP6411912B2 - Inspection port device - Google Patents

Description

  The present invention relates to an inspection port device that is attached to an inspection port that is formed in order to inspect piping or the like disposed in a wall surface of a house, a ceiling, or the like.

  As a conventional technique related to the inspection port device, for example, Patent Document 1 below is known. The inspection port frame body of Patent Document 1 is a square or rectangular frame body formed by an upper, lower, left, and right frame member and an L-shaped joint member that is joined and integrated by fitting ends of adjacent frame members together. Is configured. On the opposite side of the frame body to the side on which the L-shaped joining member is attached, an L-shaped lid plate support piece for attaching the ends of adjacent frame members by engagement, and an adjacent L-shaped lid plate A linear lid plate support piece attached between the support pieces is attached. The inspection port is closed by fixing the cover plate to the frame body by these L-shaped and linear cover plate support pieces (FIGS. 7, 9, 10 and the like in Patent Document 1).

JP 2001-123652 A

  The inspection port frame described in Patent Document 1 integrally connects adjacent frame members by attaching L-shaped joining members (corner connecting members) to both the indoor side and the back side of the frame member (side member). However, the operation of fitting the L-shaped member from both sides of the frame member was complicated.

  This invention is made | formed in view of said situation, and it aims at providing the inspection port apparatus provided with the frame member which connected the adjacent side member simply and firmly.

  In order to solve the above problems, the present invention closes a frame member provided along the periphery of an inspection port formed in a wall material that partitions an indoor space and a wall space, and an opening of the frame member. A plate-like lid member attached in such a manner that the frame member has a first side member extending along one side of the periphery of the inspection port and the other side of the periphery of the inspection port A second side member extending along the first side member and intersecting the first side member at a predetermined angle, and the first side member and the second side to connect the first side member and the second side member to each other. A corner connecting member provided at a joining portion of the members, and each of the first side member and the second side member is provided so as to face a peripheral edge of the inspection port, and behind the side wall of the side wall. Base that extends from the end of the space toward the center of the inspection port An extending portion that extends in a direction opposite to the center of the inspection port from an end portion of the side wall on the indoor space side, and the side wall is a fitted portion at an end portion on the back space side And the corner connecting member is provided on a base contact portion that contacts the wall space side of the base portion, a fitting portion that fits the mated portion, and a wall space side of the extension portion. And an extended contact portion that abuts the body (Claim 1).

  According to the present invention, it is not necessary to provide corner connecting members on both the indoor side and the back side of the abutting portion of the first side member and the second side member (which may be collectively referred to as “side member”). The side members can be integrally connected only by providing the corner connecting member only on the back side of the wall. For this reason, compared with the conventional case where corner connecting members are provided and connected on both sides (inside the room and the back of the wall) of the abutting portions of the side members, the work for connecting the side members is simple. Become.

  In addition, since the corner connecting member has a fitting portion that is fitted to the fitted portion at the end of the side wall of the side member on the wall space side, the positions of both members when the side member is fitted into the corner connecting member It is easy to match and the side member is difficult to come off from the corner connecting member when the two members are fitted and fixed.

  In addition, since the base contact portion of the corner connecting member abuts on the wall space side of the base portion, the base portion can be compensated for by the base contact portion, and thus when the frame member is attached to the wall material The mounting strength can be increased.

  In the above configuration, preferably, the fitted portion is a concave groove having an open surface on the wall space side, and the fitted portion has a base wall whose thickness is smaller than a gap of the fitted portion, and the base And a protrusion in which a part of the side surface of the wall protrudes in the thickness direction (claim 2).

  When fitting the fitting portion to the fitted portion of the side member, if the entire base wall is in contact with the inner surface of the fitted portion, the friction generated by the contact increases, and the fitting portion is Although it is difficult to fit into the fitted portion, according to the above configuration, the protrusion protruding from a part of the side surface of the base wall contacts the inner side surface of the fitted portion. And the contact area between the mating portion and the mating portion are reduced, the friction generated is also reduced, and the corner connecting member can be easily attached to the side member.

  As an aspect different from the above, the inner side surface of the fitting portion has a locking projection for fixing the fitting portion in a state of being fitted to the fitted portion, You may have the to-be-latched part latched by the said latching protrusion on the side surface (Claim 3).

  According to this configuration, the locking protrusion provided on the inner surface of the fitted portion of the side member is provided on the fitted portion in a state where the fitted portion is fitted to the fitted portion of the side member. Therefore, the side member is not easily detached from the corner connecting member.

  The said structure WHEREIN: Preferably, the base contact part is welded to the said base part of the said 1st side member and the said 2nd side member (Claim 4).

  According to this configuration, since the corner connecting member and the side member are welded in a wide area of the contact surface between the corner connecting member and the side member, the joint strength between the two members can be increased, and the strength of the frame member can be increased. Can be increased. Moreover, the effect that the base contact portion of the corner connecting member compensates for the weakness of the base portion of the side member is also obtained.

  The said structure WHEREIN: Preferably, the extension contact part is welded to the said extension part of a said 1st side member and a said 2nd side member (Claim 5).

  According to this structure, since the edge part of the contact surface of a corner connection member and a side member is welded, it can make it difficult to remove a side member from a corner connection member, and can raise the intensity | strength of a frame member. .

  In the above-mentioned configuration, it is preferable to further include a clamp part that is removably attached to the frame member in order to fix the lid member to the frame member, and the frame member has an engaged part on the indoor space side. The clamp portion includes an engaging portion that is detachably engaged with the engaged portion, and a state where the engaging portion is engaged with the engaged portion. And a pressing piece that presses the peripheral portion on the indoor space side.

  According to this structure, when fixing a clamp part to a frame member, it will be in the state which the pressing piece of the clamp part pressed the peripheral part of the cover member. For this reason, a clamp part locks a cover member with respect to a frame member, and it can prevent that a cover member shakes within a frame member.

  ADVANTAGE OF THE INVENTION According to this invention, an inspection port apparatus provided with the frame member which connected the adjacent side member simply and firmly can be provided.

It is a front view showing the inspection mouth device of a 1st embodiment concerning the present invention. It is a rear view of the inspection port apparatus of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. (A) is a partially cutaway perspective view of a frame member, and (B) is a perspective view of a corner connecting member. (A) is a top view of the corner coupling member of FIG. 5 (B), and (B) is a sectional view taken along the line VIB-VIB of (A). It is sectional drawing which shows the state before attaching a cover member to a frame member at the time of inspection port apparatus attachment shown in FIG. It is sectional drawing which shows the state which inserted the cover member in opening of the frame member at the time of inspection port apparatus attachment shown in FIG. It is a fragmentary sectional view of the inspection port apparatus of 2nd Embodiment which concerns on this invention, and is FIG. 4 equivalent view of 1st Embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The following embodiments are examples embodying the present invention, and are not of a nature that limits the technical scope of the present invention.

<First Embodiment: Configuration of Inspection Port Device>
1 and 2 are a front view and a rear view, respectively, showing an inspection port device (a state in which a lid member 2 is attached to a frame member 1) of the present embodiment, and FIGS. 3 and 4 are respectively III and III in FIG. It is a sectional view taken along line -III and a sectional view taken along line IV-IV. As shown in FIGS. 1 to 3, the inspection port device 100 according to the present embodiment has a substantially rectangular inspection port formed in a wall material K (shown only in FIG. 3) that partitions the indoor space S <b> 1 and the wall space S <b> 2. To fix the substantially square frame member 1 provided along the periphery of T1, a plate-like lid member 2 attached to close the opening T2 of the frame member 1, and the lid member 2 to the frame member 1 And a clamp portion 5 that is detachably attached to the frame member 1.

  As shown in FIG. 3, the wall material K is fixed to the base beam SK and is a horizontal wall parallel to the vertical direction that connects the floor and the ceiling. The inspection port T1 is a quadrangular opening formed in the wall material K. The frame member 1 is provided along the periphery of the inspection port T1, and has an opening T2. The lid member 2 is a substantially rectangular flat plate material having a predetermined thickness that can close the opening T2 of the frame member 1. In FIG. 1, the broken line means the outer periphery of the lid member 2. The clamp part 5 fixes the lid member 2 in the frame member 1 by pressing the peripheral edge of the lid member 2 from the indoor space S1 side. A total of four clamp portions 5 are attached to each side of the frame member 1 (side members 1a to 1d described later) on the indoor space S1 side.

  As shown in FIG. 2, the frame member 1 has a quadrangular shape having an opening T <b> 2 in the center in the rear view, and the side members (upper side member 1 a, lower side member 1 b, left side member 1 c, and right side) constituting each side of the quadrangle. Member 1d) and corner connecting members 3a to 3d provided at the four corners of the frame member 1 for connecting the side members 1a to 1d, respectively. Each of the side members 1a to 1d has a long isosceles trapezoidal shape with both ends cut off at an oblique angle of 45 °, and the butted portions of the side members 1a to 1d are connected by corner connecting members 3a to 3d to be integrated. It has become. Hereinafter, the corner connecting members 3a to 3d may be referred to as “corner connecting member 3”.

  A set of arbitrary side members intersecting each other among the four side members 1a to 1d corresponds to a “first side member” and a “second side member” in the claims. For example, regarding the pair of the upper side member 1a and the right side member 1d that intersect each other, one of them corresponds to the “first side member” and the other corresponds to the “second side member”. The same applies to the set of the right side member 1d and the lower side member 1b, the set of the lower side member 1b and the left side member 1c, and the set of the left side member 1c and the upper side member 1a.

  All of the side members 1 a to 1 d and the corner connecting member 3 are made of a hard material having strength to support the lid member 2. Examples of the hard material include hard vinyl chloride resin, ABS resin, polystyrene resin, polyethylene resin, polypropylene resin, aluminum, and aluminum alloy.

  As shown in FIG. 4, each of the side members 1 a to 1 d constituting the frame member 1 includes a side wall 4 provided so as to face the periphery of the inspection port T <b> 1 and an end of the side wall 4 on the side of the wall space S <b> 2. A base portion 4z extending to the center side of the inspection port T1, an insertion hole 7 formed so that a screw or nail fixing member or the like passes through the front and back of the base portion 4z, and an end of the side wall 4 on the indoor space S1 side An extension portion 4x extending from the portion to the opposite side of the center of the inspection port T1, and a lid extending from the center side end of the inspection port T1 in the base portion 4z to both the indoor space S1 side and the wall space S2 side. In the state where the member support portion 4f, the lid edge support portion 4g extending from the side surface of the side wall 4 on the center side of the inspection port T1 to the center side of the inspection port T1, and the lid member 2 are fitted into the frame member 1, And a tongue piece 4i extending so as to cover the outer peripheral portion.

  The side wall 4 has a ditch | groove (fitting part) 4y in the edge part by the side wall space S2 side. The side wall 4 includes an outer wall 4a, an inner wall 4b that is disposed on the inner side of the outer wall 4a and spaced substantially parallel to the outer wall 4a, and a connecting wall 4c that connects the outer wall 4a and the inner wall 4b to the inside and outside. And have.

  The ends of the side walls 1a to 1d on the side of the wall space S2 of the outer wall 4a and the inner wall 4b become concave grooves (fit portions) 4y. The concave groove 4y has a shape opened to the wall space S2 side, and is provided over the entire longitudinal direction of the side members 1a to 1d. The side members 1 a to 1 d are fixed to the corner connecting member 3 by inserting a fitting portion 3 y to be described later of the corner connecting member 3 into the concave groove 4 y of the side member 1 a.

  The outer wall 4a and the inner wall 4b of the side members 1a to 1d form a groove (engaged portion) 4e on the indoor space S1 side than the connecting wall 4c. The concave groove 4e has a shape opened to the indoor space S1 side, and is provided over the entire longitudinal direction of the side members 1a to 1d. Furthermore, a hook-like part (projection piece) 4h that protrudes toward the outer wall 4a is formed at the end of the inner wall 4b on the indoor space S1 side. By inserting a convex portion (engaging portion) 5e of the clamp portion 5 described later into the concave groove 4e, the convex portion 5e is engaged with the concave groove 4e, and the clamp portion 5 is fixed to the frame member 1.

  The lid edge support portion 4g and the lid member support portion 4f support the outer periphery and the vicinity of the periphery of the lid member 2 on the wall space S2 side, respectively.

  As shown in FIG. 3, the tongue piece 4i substantially coincides with the surface on the indoor space S1 side in the lid member 2 attached to the frame member 1 (a position slightly closer to the indoor space S1 than the surface). The lid member 2 attached to the frame member 1 is held so as not to drop off from the frame member 1. The tongue piece 4i is made of a flexible material. Although the kind of flexible material is not specifically limited, For example, a soft vinyl chloride resin, a thermoplastic elastomer, etc. can be mentioned.

  Next, the connection of the side members by the corner connecting member will be described with reference to FIG. 5A is a partially cutaway perspective view of the frame member, and FIG. 5B is a perspective view of the corner connecting member. As shown in FIG. 5 (B), the corner connecting member 3a has a square shape that is bent at a right angle at the center thereof. By attaching a total of two side members 1a and 1d one by one in each direction extending in a square shape of the corner connecting member 3c, as shown in FIG. 5 (A), two side members (first side member and first side member) Two side members) are integrally connected to form one corner of the frame member 1. Similarly, by attaching the corner connecting members 3b to 3d to the respective end portions of the side members 1a to 1d, the side members 1a to 1d are integrated to form the frame member 1 shown in FIGS.

  6A is a top view of the corner connecting member, and FIG. 6B is a cross-sectional view taken along the line VIB-VIB in FIG. 6A. As shown in FIGS. 5B, 6A, and 6B, the corner connecting member 3 includes a base contact portion 3z that abuts against the wall space S2 side of the base portion 4z and a concave portion of the side member 1a. A fitting portion 3y that fits into the groove 4y (between the outer wall 4a and the inner wall 4b) and an extending contact portion 3x that contacts the wall space S2 side of the extending portion 4x are integrally provided. Yes.

  In a state where the fitting part 3y is inserted into the concave groove 4y, the base part 4z is ultrasonically welded to the base contact part 3z, and the extension part 4x is ultrasonically welded to the extension contact part 3x. In this way, the corner connecting member 3a and the side member 1a are integrally connected.

  The base contact portion 3z has a cutout portion 7a cut out in a U shape at the end thereof.

  The notch 7a is provided to avoid the fixing member N when the fixing member N such as a screw or a nail is inserted into the insertion hole 7 of the side members 1a to 1d. It is provided at a position corresponding to the insertion hole 7 of ˜1d.

  The fitting portion 3y is a flat plate-like member that is provided in total, two one at a time, corresponding to the two sides that form the character of the corner connecting member 3a. The fitting portion 3y includes a base wall 3y1 having a thickness smaller than a gap (distance between the inner wall 4b and the outer wall 4a) of the concave groove (fitting portion) 4y and a part of a side surface of the base wall 3y1. And a protrusion 3y2 that protrudes in the thickness direction. A total of eight protrusions 3y2 are provided on one corner connecting member, each being four apart from each other in the longitudinal direction of the base wall 3y1.

  In the state in which the side member 1a and the corner connecting member 3a are integrated (that is, the state in which the fitting portion 3y of the corner connecting member 3a is fitted in the concave groove 4y of the side member 1a), the fitting portion 3y It is provided to increase the fitting strength.

  Next, fixing of the lid member 2 by the engagement of the clamp portion 5 to the frame member 1 will be described.

  The clamp part 5 includes a flat clamp part body 5a provided over the entire longitudinal direction of the side members 1a to 1d, a connection part 5b that connects the clamp part body 5a and the extension part 4x of the frame member 1, The pressing piece 5c protruding from the center side end of the inspection part of the clamp part body 5a toward the base part 4z and the surface of the clamp part body 5a on the lid member 2 side are projected and inserted into the groove 4e. And a convex portion 5e.

  The clamp part main body 5a has a predetermined width in a direction orthogonal to the longitudinal direction of the side members 1a to 1d constituting the frame member 1, and the clamp part 5 is fixed to the frame member 1 (that is, the convex part 5e). In a state where the groove member 4e is engaged with the concave groove 4e), the lid member 2 on the periphery of the opening T2 is disposed so as to be held from the indoor space S1 side. Such a clamp portion 5 fixes the lid member 2 to the frame member 1 by sandwiching the lid member 2 together with the lid member support portion 4f and the lid edge support portion 4g of the frame member 1.

  The connecting portion 5b is provided at an end portion on the outer side (opposite the center of the inspection port) of the clamp portion main body 5a, and integrally connects the clamp portion main body 5a and the extending portion 4x of the side member 1a. .

  The pressing piece 5 c protrudes toward the wall space S <b> 2 such that the tip of the pressing piece 5 c is in contact with the lid member 2 in a state where the clamp portion 5 is fixed to the side members 1 a to 1 d.

  The convex portion (engaging portion) 5e is provided over the entire longitudinal direction of the clamp portion main body 5a, and protrudes from the surface of the clamp portion main body 5a on the side in contact with the lid member 2, and on the tip of the neck portion. And an enlarged diameter portion having a substantially circular cross section provided integrally. As shown in FIG. 4, in a state where the clamp portion 5 is closed, the tip of the hook-like portion is engaged with a boundary portion (narrow portion) between the enlarged diameter portion and the neck portion.

  The connection part 5b, the pressing piece 5c, and the convex part 5e are comprised from the flexible material. Although the kind of flexible material is not specifically limited, For example, a soft vinyl chloride resin, a thermoplastic elastomer, etc. can be mentioned.

<How to use the inspection port device>
First, as shown in FIG. 7, the frame member 1 in a state where the convex portion 5e of the clamp portion 5 is removed from the concave groove 4e of the side members 1a and 1b is inserted into the inspection port T1. At this time, the frame member 1 is inserted to a position where the outer wall 4a and the end of the lid member support 4f on the side of the wall space S2 come into contact with the base beam SK. Then, the frame member 1 is fixed to the base beam member SK by inserting a fixing member N such as a screw through the insertion hole 7 of the base portion 4z and screwing it into the base beam member SK.

  Next, as shown in FIG. 8, the lid member 2 is inserted into the opening T2 of the frame member 1, and the surface of the lid member 2 on the side of the wall space S2 contacts the lid member support portion 4f and the lid edge support portion 4g. The lid member 2 is pushed into the contact position.

  Next, as shown in FIG. 3, by pushing the convex part 5e of the clamp part 5 into the concave groove 4e of the side members 1a to 1d, the enlarged diameter part of the convex part 5e is engaged with the bowl-shaped part. In a state where the convex portion 5e of the clamp portion 5 is pushed into the concave groove 4e, the tip end portion of the pressing piece 4c comes into contact with the surface of the lid member 2 on the indoor space S1 side. Thereby, the lid member 2 is fixed to the frame member 1.

  In addition, when removing the cover member 2 from the frame member 1 in order to check the interior of the wall space S2, the work may be performed in the reverse order to the order in which the cover member 2 is attached to the frame member 1 described above. Specifically, first, the clamp part 5 is removed from the frame member 1 (FIG. 8). The lid member 2 is removed from the frame member 1 by holding the handle (not shown) provided on the surface of the lid member 2 on the indoor space S1 side and pulling the lid member 2 toward the indoor space S1 (FIG. 7). . In this way, the interior of the wall space S2 can be inspected from the opening T2 of the frame member 1.

<Action etc.>
As described above, according to the inspection port device 100 according to the present embodiment, corners are provided only on the back side of the wall without providing corner connecting members on both the indoor side and the back side of the butt portions of the side members 1a to 1d. Each side member 1a-1d can be integrally connected only by providing the connection member 3. FIG. For this reason, compared with the case where corner connection members are provided on both sides (inside the room and the back side of the wall) of the butt portions of the side members as in the prior art, the work for connecting the side members 1a to 1d is simple. It becomes.

  And since the corner connection member 3 has the fitting part 3y fitted to the to-be-fitted part 4y of side member 1a-1d, when fitting side member 1a-1d in the corner connection member 3, the position of both members The side members 1 a to 1 d are not easily detached from the corner connecting member 3 when the two members are fitted and fixed.

  In addition, since the base contact portion 3z of the corner connecting member 3 contacts the wall space side of the base portion 4z of the side members 1a to 1d, the base portion 4z and the base are attached when the frame member 1 is attached to the base beam SK. It is possible to fill a gap generated between the beams SK. Thereby, the weakness of the base part 4z when it is attached to the base beam member SK can be compensated by the base contact part 3z, so that the attachment strength when the frame member 1 is attached to the wall material K can be increased. .

  When the fitting portion 3y is fitted to the fitted portion 4y of the side members 1a to 1d, if the entire base wall 3y1 is in contact with the inner surface of the fitted portion 4y, the friction caused by the contact is generated. Although it may become large and it may become difficult to fit the fitting part 3y to the to-be-fitted part 4y, when the fitting part 3y has the protrusion 3y2, it protrudes in a part of side surface of the base wall 3y1. Since the projected protrusion 3y2 contacts the inner side surface of the fitted portion 4y, the contact area between the fitted portion 3y and the inner side surface of the fitted portion 4y is reduced, and the generated friction is reduced, and the side members 1a to 1d are reduced. It becomes easy to attach the corner connecting member 3 to the.

  Since the base contact portion 3z is ultrasonically welded to the base portions 4z of the side members 1a to 1d, the corner connection member 3 and the side are arranged in a wide region of the contact surfaces of the corner connection member 3 and the side members 1a to 1d. Since the members 1a to 1d are welded, the joint strength between the two members can be increased, and the strength of the frame member 1 can be increased. In addition, since the base contact portions 3z of the corner connecting members 3a to 3d are welded to the wall space side of the base portion 4z, the weakness of the base portions 4z of the side members 1a to 1d is reduced. Can make up.

  Moreover, since the extension contact part 3x is welded to the extension part 4x of the side members 1a to 1d, the end part of the contact surfaces of the corner connecting member 3 and the side members 1a to 1d is welded. The side members 1a to 1d can be hardly detached from the corner connecting member 3, and the strength of the frame member 1 can be increased.

  This configuration is performed simultaneously with ultrasonic welding of the above-described base contact portion 3z and base portion 4z, thereby simplifying the workability of the welding of the side members 1a to 1d and the corner connecting member 3 as compared with the prior art. be able to. That is, conventionally, since two corner connecting members are provided on both the wall back side and the indoor side when viewed from the side members 1a to 1d, it is necessary to perform the work once from both sides even when they are welded. In the inspection port device of the present embodiment, the base contact portion 3z and the base portion 4z and the extension contact portion 3x and the extension portion 4x are welded to each other only by welding work from one direction from the back side of the wall. Therefore, the welding operation is easier than before. Further, since the base contact portion 3z and the base portion 4z and the extension contact portion 3x and the extension portion 4x are welded, the side members 1a to 1d are more unlikely to be detached from the corner connecting member 3.

  When the clamp portion 5 has the pressing piece 5c that presses the peripheral edge portion of the lid member 2 on the indoor space side, the convex portion (engagement portion) 5e of the clamp portion 5 is engaged with the concave groove 4e of the side member 1a. In addition, the pressing piece 5 c of the clamp portion 5 is in a state of pressing the lid member 2. For this reason, the clamp part 5 locks the lid member 2 with respect to the frame member 1, and the lid member 2 can be prevented from rattling within the frame member 1.

  Since the convex part 5e of the clamp part 5 is a diameter-enlarged part (thickened part) having a substantially circular cross section, the diameter-enlarged part can be formed by pressing the convex part 5e lightly into the concave groove 4e. It is possible to easily get over the convex portion 5e into the concave groove 4e. Further, by lightly pulling the convex portion 5e in a state where the convex portion 5e is fitted in the concave groove 4e, the diameter-expanded portion climbs over the flange-shaped portion 4h in the direction opposite to when the convex portion 5e is pushed in, and the convex portion 5e is It can be easily removed from the groove 4e. Therefore, the engagement and the disengagement of the convex portion 5e and the concave groove 4e can be easily performed, and thereby the lid member 2 can be easily fixed by the clamp portion 5.

  Moreover, since the convex part 5e is a cross-sectional substantially circular shape, even if it is not completely inserted in the corresponding concave groove 4e, only the front-end | tip of the convex part 5e can be partially latched to the concave groove 4e. This is because when the wallpaper or the like is pasted on the lid member 2, the thickness of the entire lid member including the wallpaper is increased, and the convex portion 5 e of the clamp portion 5 is difficult to reach the concave groove 4 e of the frame member 1. It is valid.

  In the first embodiment, the case where the corner connecting members 3 are provided at all four corners of the frame member 1 has been described. However, as long as the corner connecting member 3 having the same shape as that of the corner connecting member having the above configuration is used at any one of the four corners of the frame member 1. The other corner connecting members may have different shapes from those described in the above embodiment. The same applies to the side members 1a to 1d, and it is not necessary to use the side members having the configuration of the above embodiment for all four sides of the frame member 1, and any two or more of the side members 1a to 1d constituting the frame member 1 are included. As long as it has the structure of the said embodiment, another shape may be sufficient as another side member.

  In 1st Embodiment, the welding method of the base part 4z and the base contact part 3z, and the welding method of the extension part 4x and the extension contact part 3x are not limited to ultrasonic welding, For example, adhesion | attachment by an adhesive agent is carried out. It may be used.

  In 1st Embodiment, although the inspection port apparatus 100 was arrange | positioned in the inspection port T1 of a horizontal wall, you may arrange | position to the inspection port of a ceiling or the inspection port of a floor.

  Furthermore, the method of fixing the state in which the fitting portion 3y of the corner connecting member 3 is fitted in the concave groove 4y of the side members 1a to 1d is not limited to the method of providing the protrusion 3y2 on the side surface of the fitting portion 3y. Therefore, the fixing means in the fitted state other than the means for providing the protrusion 3y2 on the side surface of the fitting portion 3y will be described in the following second embodiment.

Second Embodiment
FIG. 9 is a diagram for explaining a second embodiment of the present invention. FIG. 9 is an enlarged cross-sectional view showing a connecting portion between the side member and the corner connecting member, which corresponds to FIG. 4 of the first embodiment. As shown in FIG. 9, the inspection port device of the present embodiment is locked to the side surface of the fitting portion 3y on the inner wall 4b side, instead of the protrusion 3y2 provided on the side surface of the fitting portion 3y of the first embodiment. The third embodiment is the same as that of the first embodiment except that a portion 3p is provided and a locking projection 4p that is locked to the locked portion 3p is provided outside the inner wall 4b.

  According to the structure of 2nd Embodiment, as shown in FIG. 9, in the state which fitted the fitting part 3y of corner connection member 3 'to the to-be-fitted part 4y of side member 4', side member 4 ' Since the locking protrusion 4p provided on the outer wall 4a side of the inner wall 4b is locked to the locked portion 3p provided in the fitting portion 3y, the side member 4 ′ is the corner connecting member 3 ′. It becomes difficult to come off.

  Although not clearly shown in FIG. 9, the locking protrusion 4 p is provided over the entire outer side of the inner side wall 4 b along the longitudinal direction of the side member 4 ′ (in FIG. 9, from the front of the paper surface to the back of the paper surface). Alternatively, it may be provided on the inner wall 4b only at the portion that contacts the corner connecting member 3 ', or may be provided intermittently outside the inner wall 4b along the longitudinal direction. Regardless of the shape of the locking projection 4p, the locked portion 3p provided on the side surface of the fitting portion 3y is preferably a concave groove that matches the shape of the locking projection 4p. However, when both the locked portion 3p and the locking projection 4p are provided intermittently in the longitudinal direction, there is a concern that it is difficult to align the locking projection 4p and the locked portion 3p.

  In 2nd Embodiment, although the case where the latching protrusion 4p was provided in the outer wall 4a side of the inner wall 4b was demonstrated, you may provide the latching protrusion 4p in the inner wall 4b side of the outer wall 4a. In this case, the locked portion 3p provided in the fitting portion 3y also needs to be formed not on the inner wall 4b side of the fitting portion 3y but on the outer wall 4a side of the fitting portion 3y.

  In 2nd Embodiment, although the to-be-latched part 3p was formed in the fitting part 3y, and the latching protrusion 4p was formed in the side member 1a (the outer wall 4a side of the inner wall 4b), conversely, the fitting part The locking protrusion 4p may be formed on 3y, and the locked portion 3p may be formed on the side member 1a.

  It is also possible to combine the first embodiment and the second embodiment.

1 frame member 1a, 1b, 1c, 1d side member (example of first side member and second side member)
2 Lid member 3, 3a, 3b, 3c, 3d Corner connecting member 3p Locked portion 3x Extension contact portion 3y Fitting portion 3y1 Base wall 3y2 Protrusion 3z Base contact portion 4 Side wall 4a Outer side wall 4b Inner side wall 4c Connection wall 4e Groove (example of engaged part)
4f Lid member support part 4g Lid edge support part 4i Tongue piece 4p Locking protrusion 4x Extension part 4y Groove (An example of a to-be-fitted part)
4z Base part 5 Clamp part 5a Clamp part main body 5b Connection part 5c Press part 5e Convex part (an example of an engaging part)
7 Insertion hole 100 Inspection port device S1 Indoor space S2 Wall back space T1 Inspection port T2 Opening K Wall material SK Base girder N Fixing member

Claims (6)

A frame member provided along the periphery of the inspection port formed in the wall material that partitions the indoor space and the back space;
A plate-like lid member attached so as to close the opening of the frame member,
The frame member includes a first side member extending along one side of the peripheral edge of the inspection port, and a second side extending along the other side of the peripheral edge of the inspection port and intersecting the first side member at a predetermined angle. A member, and a corner connecting member provided at a joint portion of the first side member and the second side member to connect the first side member and the second side member to each other;
Each of the first side member and the second side member extends in a center direction of the inspection port from a side wall provided so as to face a peripheral edge of the inspection port and an end portion of the side wall on the back wall side. A base portion, and an extending portion extending from the end portion of the side wall on the indoor space side in a direction opposite to the center of the inspection port,
The side wall has a fitted portion at an end of the wall space side,
The corner connecting member includes a base contact portion that contacts the wall space side of the base portion, a fitting portion that fits the mated portion, and an extension that contacts the wall space side of the extension portion An inspection port device comprising a contact portion integrally. The mated portion is a groove having an open surface on the wall space side,
The said fitting part has a base wall whose thickness is smaller than the gap | interval of the said to-be-fitted part, and the processus | protrusion which made a part of side surface of the said base wall protrude in the thickness direction. Inspection port device as described in. The inner side surface of the fitted portion has a locking projection for fixing the fitting portion in a state fitted to the fitted portion,
The inspection port device according to claim 1, wherein the fitting portion has a locked portion that is locked to the locking protrusion on a side surface thereof.   The inspection port device according to any one of claims 1 to 3, wherein the base contact portion is welded to the base portions of the first side member and the second side member.   The inspection port device according to any one of claims 1 to 4, wherein the extension contact portion is welded to the extension portions of the first side member and the second side member. In order to fix the lid member to the frame member, further comprising a clamp portion removably attached to the frame member,
The frame member has an engaged portion on the indoor space side,
The clamp portion includes an engaging portion that is detachably engaged with the engaged portion, and an interior space of the lid member in a state where the engaging portion is engaged with the engaged portion. The inspection port device according to claim 1, further comprising a pressing piece that presses a peripheral edge portion on the side.

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