JP2013170383A - Underfloor inspection hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor inspection hole for which an outer frame can be easily fixed to a joist using a member of one type.SOLUTION: In an underfloor inspection hole 1, an outer frame 4 includes a lid body receiving part which is connected to a rising wall along an inner peripheral surface of an opening 3 of a floor 2 and receives a lid body 5, a flange part 12 which is connected to an upper end of the rising wall and abutted to an upper surface of the floor 2 at a peripheral edge of the opening 3, and a groove part which is connected to a lower end of the rising wall along a length direction of the outer frame 4 and with which an outer frame fixing member 8 is engaged. The outer frame fixing member 8 includes an engaging part to be engaged with the groove part, and a wall part to be fixed to a joist 9. A hole part is formed at the groove part in a direction orthogonal to a length direction of the outer frame 4, and when the outer frame fixing member 8 is turned in the state that the engaging part is engaged with the groove part, the engaging part is inserted to the hole part in the state of being movable in the direction orthogonal to the length direction of the outer frame 4, and the wall part is positioned so as to face an attaching surface which is a fixing surface of the joist 9.

Description

  The present invention relates to an underfloor inspection port provided on a floor of a wooden building.

  FIG. 8 is a cross-sectional view of a conventional underfloor inspection port. The outer frame 51 is attached to the joists 54 using a first outer frame attachment member 52 and a second outer frame attachment member 53. The first outer frame attaching member 52 has a rectangular planar shape, and the upper end is fitted in the engaging recess 55 of the outer frame 51 and is movable in the length direction of the outer frame 51. The second outer frame attachment member 53 attached to the lower end of the first outer frame attachment member 52 has an upper end fitting portion 53a fitted into the engagement recess 52a at the lower end of the first outer frame attachment member 52, and the outer frame. It can move in a direction orthogonal to the length direction of 51. In the second outer frame attaching member 53, an attaching portion 53b located below the fitting portion 53a is screwed to a joist 54 that forms an opening.

JP 2010-209535 A

  In the underfloor inspection port described in Patent Document 1, in order to screw the outer frame 51 to the joist 54, two types of members, a first outer frame mounting member 52 and a second outer frame mounting member 53, are used. There is a problem that the number of parts increases and the installation work takes time.

  An object of the present invention is to provide an underfloor inspection port capable of easily fixing an outer frame to a joist using one kind of member.

  The invention according to claim 1 is engaged with the outer frame having a rectangular planar shape that is fitted into the opening of the floor and fixed to the joist, the lid fitted into the outer frame, and the lower end of the outer frame. And an outer frame fixing member for fixing the outer frame to the joist. The outer frame is provided with a rising wall along the inner peripheral surface of the opening, and the lid is provided continuously from the rising wall toward the inside of the opening. The lid receiving portion, the flange portion that is provided continuously from the upper end of the rising wall toward the outside of the opening portion, contacts the floor surface of the periphery of the opening portion, and the lower end of the rising wall along the length direction of the outer frame. And an outer frame fixing member that engages with the groove portion, and the outer frame fixing member includes an engaging portion that engages with the groove portion and a fixing portion that is fixed to the joist. A hole is formed in a direction perpendicular to the length direction of the frame, and the outer frame fixing member is in a state where the engaging portion is engaged with the groove portion. When rotated, the engaging portion is inserted into the hole portion in a state of being movable in a direction orthogonal to the length direction of the outer frame, and the fixing portion is positioned so as to face the fixing surface of the joist. To do.

  According to the first aspect of the present invention, when the outer frame fixing member is rotated in a state where the engaging portion is engaged with the groove portion, the engaging portion is movable in a direction perpendicular to the length direction of the outer frame. Since the fixing portion is positioned so as to face the fixing surface of the joist, the outer frame can be easily fixed to the joist using one kind of member.

It is sectional drawing of the underfloor inspection port which concerns on one embodiment of this invention. It is an expanded sectional view of an underfloor inspection port. It is sectional drawing of an outer frame. It is sectional drawing of an inner frame. It is sectional drawing of the state in which the outer frame fixing member was engaged with the groove part of the outer frame. It is sectional drawing of the state in which the engagement piece of the outer frame fixing member was inserted in the hole of the outer frame. It is a figure which shows the procedure in which the engagement piece of an outer frame fixing member is penetrated by the hole of an outer frame. It is sectional drawing of the conventional underfloor inspection port.

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of an underfloor inspection port 1 according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the underfloor inspection port 1. FIG. 3 is a cross-sectional view of the outer frame 4. FIG. 4 is a cross-sectional view of the inner frame 7. FIG. 5 is a cross-sectional view showing a state in which the outer frame fixing member 8 is engaged with the groove portion 25 of the outer frame 4. FIG. 6 is a cross-sectional view showing a state in which the engagement piece 32 a of the outer frame fixing member 8 is inserted into the hole 39 of the outer frame 4. FIG. 7 is a cross-sectional view taken along the line AA showing the procedure for inserting the engaging piece 32 a of the outer frame fixing member 8 into the hole 39 of the outer frame 4.
The underfloor inspection port 1 is attached to an opening 3 formed in a floor 2 of a wooden building. The underfloor inspection port 1 includes an outer frame 4 and a lid body 5 fitted inside the outer frame 4, and the lid body 5 includes a lid plate 6 and an inner frame 7. The outer frame 4 is fitted into the opening 3 and fixed to the joist 9 by an outer frame fixing member 8 engaged with the lower end of the outer frame 4.

  The outer frame 4 is formed in a rectangular frame shape by assembling an outer frame material formed by extrusion molding of aluminum. The outer frame 4 includes a rising wall 11 along the inner peripheral surface of the opening 3. At the upper end of the rising wall 11, a flange 12 is provided continuously toward the outside of the opening 3. The collar 12 abuts on the upper surface of the floor 2 around the periphery of the opening 3. A lid body receiving portion 13 is connected to the middle portion of the rising wall 11 toward the inside of the opening 3. The lid 5 is supported on the outer frame 4 by the lid receiving portion 13.

  A wall 15 is continuously provided at the lower end of the rising wall 11 so as to extend inward of the opening 3. A wall portion 16 is continuously provided downward from the end portion of the wall portion 15, and a wall portion 17 is continuously provided horizontally from the end portion of the wall portion 16 toward the outside of the opening 3. A wall 18 rises upward from the end of the wall 17. A wall 21 is further provided on the lower end of the rising wall 11 in a downward direction. An L-shaped leg 23 is provided on the lower end of the wall 21. The groove part 25 with which the engaging part 30 of the outer frame fixing member 8 engages is a space surrounded by the wall parts 15, 16, 17, 18, 21 and the leg part 23. A hole 26 through which the engagement piece 32a is inserted is formed.

  The cover plate 6 is formed in a rectangular flat plate shape using the same material as the floor 2. The inner frame 7 is formed in a rectangular frame shape using an inner frame material formed by extrusion molding of aluminum. The inner frame 7 is screwed to the lid plate 6 so as to cover the outer periphery of the lid plate 6. In the lid 5, the lid plate 6 is supported by the lid receiving portion 13, and the lid receiving portion 13 is provided with an airtight material 27 in order to improve airtightness.

The outer frame fixing member 8 is formed by, for example, resin molding and has a substantially L-shaped cross section. An engaging portion 30 that engages with the groove portion 25 of the outer frame 4 is formed on the upper surface 29 of the horizontal wall portion 28 located at the upper portion of the outer frame fixing member 8. The engaging portion 30 includes a main body portion 31 that rises vertically from the upper surface 29 of the wall portion 28, and engaging pieces 32 a and 32 b that are formed at the upper end of the main body portion 31. One side surface 33 of the main body 31 is chamfered obliquely and formed in a V shape. The engaging pieces 32a and 32b are formed in a flat plate shape in the horizontal direction, and the width of the engaging pieces 32a and 32b can be inserted into the opening of the groove portion 25 formed between the leg portion 23 and the wall portion 18. Width.
In the present embodiment, the engagement piece 32a extending from the main body 31 to the side surface 34 opposite to the V-shaped side surface 33 side is more than the engagement piece 32b extending to the V-shaped side surface 33 side. However, the present invention is not limited to this. The corner portion of the engagement piece 32b is rounded to prevent the corner portion from contacting the wall portion 16 when the engagement piece 32b rotates. The corners of the engagement pieces 32 a are chamfered to prevent the corners of the engagement pieces 32 a from coming into contact with the peripheral edge of the holes 26 when the engagement pieces 32 a rotate and are inserted into the holes 26. Has been.

  A wall portion 38 which is a fixed portion extending downward is formed at the end of the wall portion 28, and the engagement pieces 32 a and 32 b are formed in an elongated shape in a direction perpendicular to the wall portion 38. The wall portion 38 is formed with a hole 39 for screwing the outer frame fixing member 8 to the joist 9. Since the hole 39 is formed in an elongated shape protruding from the wall 38 inward of the opening 3, the operator can easily insert the screw into the hole 39 without worrying about the screwing angle of the screw. Can be screwed.

  Here, the installation procedure of the underfloor inspection port will be described. A frame-shaped outer frame 4 is formed by connecting the outer frame materials. The outer frame members are connected to each other by, for example, connecting metal fittings installed between the end portions of the outer frame member. An outer frame fixing member 8 is engaged with the outer frame 4. In the outer frame fixing member 8, the engaging portion 30 is engaged with the groove portion 25 in accordance with the position of the hole portion 26 formed in the outer frame 4. As shown in FIG. 7A, the engagement portion 30 is engaged with the engagement pieces 32 a and 32 b aligned along the groove portion 25.

  When the outer frame fixing member 8 is rotated in this state, the corner portion on one side of the engagement piece 32a is inserted into the hole portion 26 as shown in FIG. The side surface 33 of the main body portion 31 is obliquely chamfered and formed in a V shape, and the corner portion of the main body portion 31 is prevented from coming into contact with the wall portion 18 when the outer frame fixing member 8 rotates. The corner portion of the engagement piece 32b is rounded to prevent the corner portion from contacting the wall portion 16 when the engagement piece 32b rotates.

  When the outer frame fixing member 8 is further rotated, the corner portion on one side of the engagement piece 32a penetrates the hole portion 26 as shown in FIG. When the outer frame fixing member 8 is further rotated, the other corner of the engagement piece 32a is inserted into the hole 26 as shown in FIG. The corners of the engagement pieces 32a are chamfered, and the corners of the engagement pieces 32a are prevented from contacting the periphery of the hole 26.

  When the outer frame fixing member 8 is further rotated, as shown in FIG. 7E, the other corner of the engaging piece 32a passes through the hole 26, and as shown in FIG. In the joint portion 30, the engagement piece 32 a is inserted into the hole portion 26, and the engagement piece 32 a and the engagement piece 32 b are orthogonal to the groove portion 25. The outer frame fixing member 8 is engaged with, for example, two locations with respect to one outer frame material, and is installed on the outer frame 4 at eight locations.

  The outer frame 4 with which the outer frame fixing member 8 is engaged is fitted into the opening 3 formed in the floor 2. The outer frame 4 is fitted so that the flange 12 abuts against the upper surface of the floor 2 at the periphery of the opening 3. A gap X is provided between the side surface 34 of the main body 31 of the engaging portion 30 and the end portion 41 of the leg portion 23 of the outer frame 4, and the wall 38 is moved according to the attachment position of the joist 9, The wall 38 can be brought into contact with the attachment surface of the joist 9. The outer frame fixing member 8 can be easily screwed to the joist 9 by inserting a screw into the hole 39 of the outer frame fixing member 8 brought into contact with the mounting surface of the joist 9. After the outer frame fixing member 8 is screwed to the joists 9 and the outer frame 4 is fixed, the lid body 5 is fitted into the outer frame 4 with the lid plate 6 supported by the lid body receiving portion 13.

  When the engaging piece 32a is inserted through the hole 26, it is desirable that the gap generated in the width direction of the engaging piece 32a is narrow. When the hole 26 is formed wider than the width of the engagement piece 32a, the engagement piece 32a is inserted through the hole 26 (the state shown in FIG. 7F), and the outer frame fixing member 8 is inserted. Is screwed to the joist 9, a gap is formed between the hole 26 and the engagement piece 32a. The outer frame fixing member 8 engaged with the outer frame member connected at a right angle to the outer frame member shown in FIG. 7 (f) is between the side surface 34 and the leg portion 23 end portion 41 of the outer frame 4. Since the screw is fixed to the joist 9 in a state where there is a gap, play may occur and the outer frame 4 may not be fixed to the floor 2 in some cases.

  In this way, the planar shape that is fitted into the opening 3 of the floor 2 and fixed to the joist 9 is rectangular, the lid 5 that is fitted inside the outer frame 4, and the lower end of the outer frame 4. And an outer frame fixing member 8 that fixes the outer frame 4 to the joist 9. The outer frame 4 has a rising wall 11 along the inner peripheral surface of the opening 3, and an inner side of the opening 3 from the rising wall 11. A lid receiving portion 13 that is continuously provided toward the top and receives the lid 5, and a flange 12 that is provided continuously from the upper end of the rising wall 11 toward the outside of the opening 3 and contacts the upper surface of the floor 2 around the opening 3. And a groove portion 25 that is connected to the lower end of the rising wall 11 along the length direction of the outer frame 4 and engages with the outer frame fixing member 8. The outer frame fixing member 8 engages with the groove portion 25. In the underfloor inspection port 1 provided with a portion 30 and a wall portion 38 that is a fixed portion fixed to the joist 9, the groove portion 25 has an outer frame 4 When the hole 26 is formed in a direction orthogonal to the length direction, and the outer frame fixing member 8 is rotated in a state where the engagement portion 30 is engaged with the groove portion 25, the engagement portion 30 is moved to the outer frame 4. Since the wall portion 38 is positioned so as to face the mounting surface that is the fixed surface of the joist 9 in a state that is movable in a direction perpendicular to the length direction of the The outer frame 4 can be easily fixed to the joist 9.

DESCRIPTION OF SYMBOLS 1 Underfloor inspection port 2 Floor 3 Opening part 4 Outer frame 5 Lid body 6 Lid plate 7 Inner frame 8 Outer frame fixing member 9 joist 11 Standing wall 12 Gutter part 13 Lid body receiving part 15, 16, 17, 18, 21 Wall part 23 Leg part 25 Groove part 26 Hole part 27 Airtight material 28 Wall part 29 Upper surface 30 Engagement part 31 Main body part 32a, 32b Engagement piece 33, 34 Side surface 38 Wall part 39 Hole part 41 End part

Claims (1)

An outer frame having a rectangular planar shape that is fitted into the opening of the floor and fixed to the joist,
A lid fitted inside the outer frame;
An outer frame fixing member that is engaged with the lower end of the outer frame and fixes the outer frame to the joist,
The outer frame has a rising wall along the inner peripheral surface of the opening, a lid receiving part that is connected from the rising wall toward the inside of the opening, and receives the lid, and from the upper end of the rising wall to the outside of the opening. A flange portion that is continuously provided toward the floor surface of the periphery of the opening, and a groove portion that is provided along the length direction of the outer frame at the lower end of the rising wall and engages with the outer frame fixing member,
The outer frame fixing member is an underfloor inspection port provided with an engaging portion that engages with the groove portion and a fixing portion that is fixed to the joist.
A hole is formed in the groove portion in a direction perpendicular to the length direction of the outer frame. When the outer frame fixing member is rotated in a state where the engagement portion is engaged with the groove portion, the engagement portion is moved to the outer frame. An underfloor inspection port characterized by being inserted into the hole portion so as to be movable in a direction orthogonal to the length direction of the head, and being positioned so that the fixed portion faces the fixed surface of the joist.

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