JP4659853B2 - Outer frame mounting device for underfloor inspection port - Google Patents

Description

  The present invention relates to an outer frame attaching device for an underfloor inspection port.

  In general, an underfloor inspection port is composed of a frame-shaped outer frame that fits in a rectangular cutout opening in a floor plate, and a lid that is detachably fitted into the outer frame. An inner frame (lid frame) aligned with the outer frame is integrally attached.

  The outer frame of the underfloor inspection port is a wall with a fixed depth, a horizontal top flange that protrudes outward from its upper end, and a horizontal base that protrudes inward from the lower end of the wall. This is an aluminum extruded material with a cross-sectional shape with a flange, and the top flange of such an outer frame is locked to the notch opening edge of the floor plate in a covered state, while the base flange of the outer frame also supports the floor plate It is attached and fixed to the joist with a tapping screw to handle the inner frame of the lid.

  However, if the foundation work of the building or the joist assembly that supports the floorboard is inaccurate, the depth from the surface of the floorboard to the joist varies, or the horizontalness of the joist assembly is incorrect. The base flange of the outer frame is lifted from the surface of the joist, and the base flange of the outer frame cannot be attached and installed to the joist in an overall contact state.

  Therefore, in the past, by using a synthetic resin plate of a certain thickness as a spacer or shim, the required number of sheets cut to the appropriate length of use is affixed to the back surface of the base flange or the surface of the joist at the construction site. The horizontal gap between the top and bottom joists is corrected and the level of the outer frame is corrected, but it is troublesome for the adjustment work at the site, and in addition, the mutual gap is changed automatically and correctly. It is impossible to pack.

  SUMMARY OF THE INVENTION The present invention aims to improve such problems, and in order to achieve the object, according to claim 1, a frame-shaped outer frame that fits in a rectangular cutout opening of a floor board, and a detachable attachment to the inside of the outer frame. In the outer frame mounting device of the underfloor inspection port for fixing the horizontal base flange projecting inward from the lower end portion of the outer frame to the joist with a plurality of tapping screws.

  A lip groove rail that opens downward on the base flange of the outer frame is arranged in a row, and the head relief holes for tapping screws are distributed in the vicinity of both ends of the base flange.

  The wide end portions of the spring steel plate serving as a washer for the tapping screw are inserted and locked into the lip groove rail so as not to fall off, while the narrow intermediate portion of the spring steel plate is supported by the head portion of the tapping screw. The lip groove rail is elastically deformed so as to protrude from the downward opening width of the rail, and is pressed against the surface of the joist and fixed.

  Further, in claim 2, wide end portions of the spring steel plate serving as a washer for the tapping screw are formed as a pair of locking ear pieces corresponding to the groove width of the lip groove rail,

  An elastic deformation strip extending from the downward opening width of the lip groove rail at the narrow intermediate portion of the spring steel plate communicates with the tapping screw head relief hole of the outer frame at the center of the elastic deformation strip A tapping screw shaft portion relief hole is formed as an opening.

  Furthermore, in claim 3, the lip of the lip groove rail arranged on the base flange of the outer frame is crushed or caulked to constrain the washer of the tapping screw so that it cannot be detached from the lip groove rail. And

  According to the above configuration of claim 1, even if there is a deviation in the horizontality of the joist group, a special synthetic resin plate serving as a conventional spacer is prepared, and the length of use or the necessary number of sheets is cut. The spring steel plate (washer) is elasticized by the tapping screw's head simply by screwing the tapping screw into the joist from the base flange of the outer frame. Through the deforming action, the outer frame of the floor inspection opening can be fixed and maintained in a pressed state that is straightened and corrected to the joists. Even if you work, you will always get a uniform correction effect.

  If the configuration of claim 2 is adopted, a tapping screw head relief hole distributed in the vicinity of both ends of the base flange in the outer frame and a tapping screw opened in the washer (spring steel plate) of the tapping screw. The shaft escape hole is in a centered state communicating with each other, so that the tapping screw may be screwed and rotated from the outer frame to the joist through the washer (spring steel plate). There is no need to do it.

  Furthermore, if the structure of claim 3 is adopted, the tapping screw washer (spring steel plate) is not likely to slide out of the lip groove rail of the outer frame and fall off. Can do.

  Hereinafter, a specific configuration of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a construction state of the underfloor inspection port, and (A) shows a rectangular notch opening (inspection port) of the floor board (1). ) An outer frame that is assembled and integrated into a frame shape corresponding to (O), and (2) is a lid that is detachably fitted into the outer frame (A). ) And an inner frame (lid frame) (B) adhered to and integrated with the periphery thereof, and a heat insulating material (5) attached to the lower surface of the plywood (3) via a heat insulating material cover (4). The rotating handle (6) can be attached to and detached from the outer frame (A). (7) is a reinforcing material for the lid (2).

  In that case, in the illustrated embodiment, the outer frame (A) and the inner frame (B) of the lid (2) are separated from each other by the separate outer frame corner connecting piece (8) and inner frame corner connecting piece (9). Although it is framed in a square shape in plan view by using the insertion, the use of such synthetic resin corner connecting pieces (8) and (9) is omitted, and the outer frame (A) and the lid (2) are not used. Of course, the inner frame (B) may be abutted at 45 degrees between the adjacent end portions and assembled and integrated into a similar frame shape.

  In any case, the outer frame (A) of the underfloor inspection port has an enclosure wall (10) of a certain depth and a horizontal top projecting outward from its upper end, as is apparent from the exploded state of FIG. It is an aluminum extruded material having a cross-sectional shape including a flange (11) and a horizontal base flange (12) projecting inward from the lower end of the surrounding wall (10). The top flange (11) The base flange (12) of the joist (13) whose base flange (12) supports the floor board (1) under the locked state where the notch opening (inspection port) (O) of the floor board (1) is trimmed and covered. It is attached and fixed to the surface by a plurality of tapping screws (14). (15) is a hanging hook that is continuously bent from the projecting tip of the base flange (12), and the underfloor storage (16) for various articles can be hung thereon.

  On the other hand, the inner frame (lid frame) (B) of the underfloor inspection port is inward from the cover wall (17) covering the peripheral edge of the lid (2) and its upper end as shown in the exploded state of FIG. An aluminum extruded material having a cross-sectional shape, which includes a horizontal top flange (18) projecting on the surface and a support leg (20) hanging from the horizontal lid receiving base (19) of the cover wall (17). With the support leg (20) being received by the base flange (12) of the outer frame (A), the top flange (11) (18) of the outer frame (A) and the inner frame (B). Comrades are aligned and keep the same height level.

  The base flange (12) of the outer frame (A) is formed as a lip groove rail (22) having a groove width (S2) wider than the downward opening width (S1) by a pair of facing L-shaped lips (21). Extruded so that the washer (23) of the tapping screw (14) can be received in the groove. (24) is a pair of tapping screw head relief holes formed in the base flange (12) in the vicinity of both ends of the outer frame (A), and the head of the tapping screw (14) ( The head (14a) can be freely passed through as a circle having a larger diameter (D1) (for example, about 8 mm) than 14a).

  The washer (23) of the tapping screw (14) has a certain length (L) (for example, about 50 mm), width (W) (for example, about 11 mm) and thickness (T) (for example, as shown in FIGS. 6 to 9). The lip groove rails (23a) are made of a spring steel plate (SUS301) having a width of about 2 mm (for example, about 11 mm). 22) is locked to the inside of the wide groove width (S2), so that it does not fall downward, and the narrow band width (W1) in which the middle part of the washer (23) is also cut out in parallel. As an elastic deformation strip (23b) (for example, about 8 mm), it is elastically deformed so as to project downward from the downward opening width (S1) of the lip groove rail (22), and is pressed and fixed to the surface of the joist (13). It has come to be.

  Further, (25) is a tapping screw shaft opening hole formed in the central portion of the washer (23), and this is for a tapping screw opening in the base flange (12) of the outer frame (A). Although it communicates with the head escape hole (24), the shaft (14b) of the tapping screw (14) is allowed to escape as a circle having a smaller diameter (D2) (for example, about 4 mm) and larger than this. The elastic deformation strip (23b) of the washer (23) is pushed down by the head (14a) so that it can be elastically deformed.

  The washer (23) of such a tapping screw (14) is inserted into the inside of the lip groove rail (22) forming the base flange (12) of the outer frame (A) so as not to fall off in advance at the manufacturing factory. Has been.

  That is, the washer (23) having the above-described configuration of the tapping screw (14) has an opening distribution in the vicinity of both ends of the base flange (12) in the outer frame (A), as is apparent from FIG. 2 and FIGS. Tapping screw head clearance hole (24) on the outer frame (A) side and tapping screw shaft clearance on the washer (23) side. As a centering state in which the hole (25) communicates, a pair of partition stoppers (in which the lip (21) is crushed or caulked after being inserted and set into the lip groove rail (22) of the base flange (12) ( 26), the both ends of the washer (23) are restrained so that they cannot be detached from the outer frame (A).

  Therefore, when attaching and fixing the base flange (12) of the outer frame (A) to the joist (13) supporting the floor board (1) at the construction site, it is for the tapping screw on the outer frame (A) side. The tapping screw (14) is screwed into the joist (13) from the head relief hole (24) to the joist (13) through the tapping screw shaft relief hole (25) on the washer (23) side, and the washer (23) It is sufficient that the elastic deformation strip (23b) is elastically deformed so as to protrude from the downward opening width (S11) of the lip groove rail (22) and pressed against the surface of the joist (13).

  In that case, if the depth from the surface of the floor board (1) to the joist (13) is constant, as shown in FIGS. 12 and 13 even when there is an error in the horizontality of the outer frame (A) and at random gaps (H) are generated between the upper and lower surfaces of the base flange (12) of the outer frame (A) and the joists (13). 14 to 18, the head (14a) of the tapping screw (14) that is screwed and rotated is passed through the head escape hole (24) that opens in the base flange (12) of the outer frame (A). After sinking, the elastic deformation strip (23b) of the washer (23) is elastically deformed so as to protrude from the downward opening width (S1) of the lip groove rail (22), and is pressed and fixed to the surface of the joist (13). Will fill the gap (H) with itself. Results serve as pacer or shims can be secured maintained orthodontic state of levelness outer frame of the (A) to the joist (13).

  In that case, in the illustrated embodiment, a horizontal insertion tongue piece (27) protruding in two directions perpendicular to the lower end of the outer frame corner connecting piece (8) is attached to the base flange (12) of the outer frame (A). A vertical insertion tongue piece (28) which is inserted into the lip groove rail (22) and also projects in two directions perpendicular to the same from the upper end of the outer frame corner connecting piece (8) is enclosed in the outer frame (A). It is inserted into a separate lip groove rail (29) that is partitioned at the boundary between the standing wall (10) and the top flange (11), and is connected and integrated via a countersunk screw (30) and a corner reinforcing plate (32). It has become.

  Further, a vertical insertion tongue piece (33) protruding in two directions perpendicular to the upper end of the inner frame corner connecting piece (9) is formed on the cover wall (17) of the inner frame (lid frame) (B). A vertical insertion tongue piece (35) that extends into two perpendicular directions from the lower end of the inner frame corner connecting piece (9) is also inserted into the lip groove rail (34). It is inserted into a receiving hook (36) formed on the support leg (20) of (B), and is connected and fixed by a countersunk screw (37). Therefore, there is an effect that an underfloor inspection port having a high assembly accuracy and durability strength between the outer frame (A) and the inner frame (lid frame) (B) can be obtained.

It is sectional drawing which shows the construction state of the underfloor inspection port which concerns on this invention. It is a disassembled slope figure which extracts and shows the outer frame of FIG. FIG. 2 is an exploded perspective view showing the inner frame (lid frame) of FIG. 1 extracted. It is sectional drawing of the state which removed the inner frame (lid frame) from FIG. It is the slope view which looked at the corner part of an outer frame from the downward direction. It is a perspective view which shows the attachment state of an outer frame. FIG. 7 is a plan view of FIG. 6. It is a top view which extracts and shows a washer. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. It is the 11-11 line sectional view of FIG. FIG. 11 is a cross-sectional view corresponding to FIG. 10 when there is a deviation in the horizontality of the joists. FIG. 13 is a sectional view taken along line 13-13 of FIG. It is sectional drawing which shows the state which screwed the tapping screw from FIG. FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. 14. It is a 16-16 line expanded sectional view of Drawing 15. It is a 17-17 line expanded sectional view of FIG. FIG. 18 is an enlarged cross-sectional view taken along line 18-18 in FIG. 15.

Explanation of symbols

(1) ・ Floor board (2) ・ Cover body (3) ・ Plywood (4) ・ Heat insulation cover (5) ・ Heat insulation material (6) ・ Rotating handle (7) ・ Reinforcing material (8) ・ Outer frame corner connection Piece (9)-Inner frame corner connecting piece (10)-Enclosure wall (11)-Top flange (12)-Base flange (13)-joist (14)-Tapping screw (14a)-Tapping screw head (14b ) ・ Tapping screw shaft (15) ・ Hanging hook (16) ・ Underfloor storage (17) ・ Cover wall (18) ・ Top flange (19) ・ Land base (20) ・ Support leg (21)・ Lip (22) ・ Rip groove rail (23) ・ Washer (23a) ・ Overhanging locking ear piece (23b) ・ Elastic deformation strip (24) ・ Head relief hole (25) ・ Shaft part relief hole (26) · Partition stopper (27) (28) Insert tongue (29) (34), lip groove rail (30), countersunk screw (32), corner reinforcement plate (33) (35), insert tongue (36), receiving hook (37), countersunk screw ( A) ・ Outer frame (B) ・ Inner frame (lid frame)
(H), gap (L), washer length (O), notch opening (inspection port)
(D1) (D2) · Diameter (S1) · Downward opening width (S2) · Groove width (T) · Washer length (W) · Washer width (W1) · Elastic deformation strip width

Claims (3)

A frame-shaped outer frame (A) that fits in the rectangular cutout opening (O) of the floor board (1), and a lid (2) that is detachably fitted into the outer frame (A). In the outer frame mounting device of the underfloor inspection port for fixing the horizontal base flange (12) projecting inward from the lower end of the outer frame (A) to the joist (13) with a plurality of tapping screws (14),
A lip groove rail (22) that opens downward is arranged in a row on the base flange (12) of the outer frame (A), and a tapping screw head relief hole (24) is provided near both ends of the base flange (12). )
The wide end portions of the spring steel plate to be the washer (23) of the tapping screw (14) are inserted and locked into the lip groove rail (22) so as not to fall off, while the narrow intermediate portion of the spring steel plate. The portion is elastically deformed by the head (14a) of the tapping screw (14) so as to protrude from the downward opening width (S1) of the lip groove rail (22), and is pressed and fixed to the surface of the joist (13). An outer frame attaching device for an underfloor inspection port. The wide end portions of the spring steel plate to be the washer (23) of the tapping screw (14) are formed as a pair of locking ear pieces (23a) corresponding to the groove width (S2) of the lip groove rail (22). While
As the elastic deformation strip (23b) that projects the narrow intermediate portion of the spring steel plate from the downward opening width (S1) of the lip groove rail (22), an outer frame is provided at the center of the elastic deformation strip (23b). 2. The outer frame mounting of an underfloor inspection port according to claim 1, wherein a tapping screw shaft relief hole (25) communicating with the tapping screw head relief hole (24) of (A) is formed. apparatus.   By crushing or caulking the lip (21) of the lip groove-shaped rail (22) arranged on the base flange (12) of the outer frame (A), the washer (23) of the tapping screw (14) is moved into the lip groove. The outer frame attaching device for an underfloor inspection port according to claim 1, wherein the outer frame attaching device is restrained so as not to be detached from the shaped rail (22).

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