JP3203574B2 - Floor plate connection bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor board used for connecting metal floor boards in series in the longitudinal direction when laying metal floor boards used for temporary passages, scaffolds, etc. in construction and civil engineering work. It relates to a connection fitting.

[0002]

2. Description of the Related Art For example, in a tunnel construction by a shield method or the like, when a temporary passage is provided in a tunnel, an elongated steel floor plate having a length of, for example, 2 to 4 m is placed on a trolley for a trolley rail. Laying in parallel is performed. In this case, in order to provide a stable temporary passage, floor plates adjacent in the longitudinal direction are connected to each other by connecting metal fittings.

FIGS. 9 and 10 show a floor plate of this type and a conventional connection fitting (see Japanese Utility Model Laid-Open No. 2-53415). The floor panel material 1 is manufactured by punching and bending a single long and thin steel plate.
The floor portion 2 has a cross-sectional shape having an inward shape, and the floor portion 2 is provided with slots 4 in the width direction at regular intervals in the longitudinal direction. A continuous portion 5 having a shallow inverted U-shaped cross section is formed between the slots 4. It is the structure which was done.

A conventional connection fitting 6 for connecting the floor boards 1 adjacent in the longitudinal direction includes an upper fitting 7, a lower fitting 8, and a bolt 9, as shown in FIGS. The metal fittings 7 are placed on the continuous part 5 so that
The lower metal fitting 8 has a cross-sectional shape in which a shallow recess 8a is formed in the center, and has a recessed portion 8a. Has a screw hole 8b. Then, each of the two continuous portions 5 at the extreme ends of the two floor plate materials 1 butted with each other is covered with each downward concave cross-sectional portion 7a of the upper metal fitting 7, and the lower metal fitting 8 is applied to the lower surface thereof, and the bolt 9 Then, the two metal members 7, 8 are tightened and fixed, and the two continuous portions 5 are sandwiched between the upper and lower two metal members 7, 8, thereby connecting the two floor plate materials 1.

[0005]

SUMMARY OF THE INVENTION The above-described conventional connection fitting 6 is described.
Is intended to improve the workability of the connection work, but it requires two metal fittings 7, 8 to be applied from above and below, and also requires a bolt 9, and the operation of screwing in the bolt 9 is complicated. It is desired that the workability of the connection work be further improved. When this type of floorboard material 1 is used for temporary construction, it is repeatedly collected after completion of construction, transported to the next construction site, and used again. Since the parts 7, 8, and 9 are a set, the management is complicated. Further, there is also a problem that rust may be generated in the bolt hole 9 or the screw hole 8b of the lower metal fitting 8, or mud may adhere thereto, and fastening may be difficult or impossible.

Further, depending on the distance between the beams on which the floor panel 1 is placed, as shown in FIG. 11, the connecting position of the floor panels 1 may be located at an intermediate position between the beams 10. Since the floorboard 1 is cantilevered, it is necessary to support the weight of a pedestrian standing at the connection between the floorboards 1. There are various ways to achieve this, but if it is intended to support the bending moment due to the weight of a pedestrian due to the rigidity of the connection instead of installing a support at the bottom,
Since the conventional connection fitting 6 has a structure in which only two continuous portions 5 at the ends of both floor plate materials 1 are held, it is not necessarily appropriate as a structure that bears a bending moment acting on a connection portion between the floor plate materials 1. Not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and can more easily connect floor boards without using screws that may not be used. It is an object of the present invention to provide a floor plate connection metal fitting which is easy to manage because there are few types and is efficient as a structure for bearing a bending moment acting on a connection part between floor plate materials and which can connect the connection part with sufficient rigidity. Aim.

[0008]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems has a cross-sectional shape having L-shaped legs facing inward on both sides of a floor, and a width-wise slot is formed in the floor in the longitudinal direction. A floor plate connecting metal fitting provided at regular intervals and used for connecting longitudinally in series metal floor plates having a continuous portion having a shallow inverted U-shaped cross section between slots. A main body having a U-shaped cross section that embraces a side portion of the floor slab at a position; And a plurality of claw pieces provided at a pitch of an integral multiple of the slot pitch, and an engaging piece projecting from the lower surface of the main body toward the center of the floor plate material and capable of engaging with the edge of the horizontal portion of the L-shaped leg. It is characterized by having.

According to a second aspect of the present invention, in the floor plate connecting metal fitting according to the first aspect, a reinforcing bar which passes through a lower side of the continuous portion is provided at the tip of each claw piece so as to be passed between the butted two floor plates. A concave receiving portion for receiving is formed.

According to a third aspect of the present invention, in the floor plate connecting bracket of the first aspect, a bent portion is formed on a lower surface of the main body portion so as to be engaged with an edge of a horizontal portion of an L-shaped leg of the floor plate. A curved surface portion for guiding is formed at the tip of the.

According to a fourth aspect of the present invention, there is provided a floor plate connecting fitting according to the first aspect, wherein a bar-shaped removal tool is provided on the inner surface side of the longitudinal end of the vertical portion of the main body having a U-shaped cross section from the longitudinal end of the main body. Is formed to form a concave portion into which is inserted.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
A description will be given with reference to the embodiment of FIG. Floor board material 1 of the embodiment
Numeral 1 is substantially the same as the floor plate 1 in the conventional example shown in FIGS. 9 and 10, and is manufactured by punching and bending a single elongated steel plate. As shown in FIGS. The cross section has L-shaped legs 13 facing inward on both sides of the surface portion 12, and the floor surface portion 12 has slots 14 in the width direction at regular intervals in the longitudinal direction, and a shallow inverted U-shaped cross section between the slots 14. Is a structure in which a continuous portion 15 is formed.

The floor plate connecting bracket 16 of the present invention is used to connect longitudinally adjacent floor plate members 11 when the floor plate members 11 are laid in series in the longitudinal direction, and is shown in a perspective view in FIG. It has an external appearance and is attached to the floor plate 11 as shown in FIGS. That is, the floor plate connecting bracket 16
The main body has a U-shaped cross section that embraces the side portion 20 (the L-shaped leg 13 and the floor edge 12a (the left and right edges of the floor 12)) of the floor 11 at the position of the slot 14 in the floor 11. Part 17
A claw piece 18 protruding from the upper surface portion 17a of the main body portion 17 having the U-shaped cross section to the center of the floor plate material and capable of engaging with the side edge portion of the slot 14; An engaging piece 19 protruding toward the center of the plate member and capable of engaging with the edge of the horizontal portion 13a of the L-shaped leg portion 13 of the floor plate member 11 is provided. The claw piece 18 has a shape that extends slightly horizontally and is inclined downward, and does not directly engage with the inner peripheral edge of the slot 14, but contacts the curved surface 14 a reaching the inner peripheral edge of the slot 14. And is engaged with the floor edge 12a. In the embodiment, three claw pieces 18 are formed at a slot pitch (the interval between slots). Also,
The engagement piece 19 has a shape that is bent upward from an end of the lower surface portion 17b of the main body portion 17 and is curved in an arc shape, and is formed at both ends in the longitudinal direction of the floor plate material connection fitting 16. A recess 25 is formed on the inner surface of the longitudinal end of the vertical portion 17c of the main body 17 so that a rod-like removal tool 24 (see FIG. 3) can be inserted from the longitudinal end of the main body 17. I have.

When the floor plate members 11 adjacent to each other in the longitudinal direction are connected to each other by using the above-described floor plate member connection bracket 16, FIGS.
As shown in FIG. 5, the floor plate connecting metal fittings 16 are fitted to the right and left side portions 20 (refer to the portion where the L-shaped leg 13 and the floor surface edge 12a are combined) of the connecting portion between the floor plate materials 11. In this case, the center claw piece 18 of the three claw pieces 18 is engaged with the slot-shaped portion 14 ′ formed by the cutout at the end of both floor boards 11, and the claw pieces 18 on both sides are connected to each floor. The slot 14 at the end of the plate 11 is engaged. The end of the floor plate 11 is cut at the center of the slot 14, and the cutout is half the shape of the slot 14, and has the same shape as the slot 14 when the two are combined. In this case, as shown by a two-dot chain line in FIG. 4, first, only the claw piece 18 of the floor plate connecting bracket 16 is hooked on the slot 14 or the slot-shaped portion 14 ', and the engagement curved in an arc shape is performed. When the piece 19 is brought into contact with the lower part of the L-shaped leg 13 of the floor plate material 11 and is rotated and pushed in the direction of the arrow with the upper part as a fulcrum, the engagement piece
The upper and lower corners of the floor plate connecting bracket 16 are once pushed and expanded, and then elastically return to fit, as shown by the solid line, into the horizontal portion 13a of the L-shaped leg 13.

In this state, the floor plate connecting bracket 16 is attached to the claw piece 1.
8 and the engaging piece 19 are respectively at the floor edge 1 of the floor board 11.
Since it is fitted to the side portion 20 of the floor plate 11 in a state of engaging with the 2a and the horizontal portion 13a, it is easily attached so as not to come off from the floor plate 11. Since the rigid connecting member 16 of the floor plate holds a fixed length portion at the end of both floor plates 11, the connecting portion of both floor plates 11 has sufficient bending rigidity and is bent by the weight of the passerby. Can bear the moment. Therefore, as shown in FIG. 11, even when the connecting position of the floor boards 11 is located between the beams 10,
It can easily support the weight of passers-by.

When the floor plate connecting bracket 16 is to be removed, an elongated rod-shaped one is used as a removing tool. That is, as shown in FIG. 3, for example, a removal tool 24 such as a screwdriver is obliquely inserted into a recess 25 provided in the vertical portion 17c of the main body portion 17 of the floor plate connecting bracket 16, and
When the force of the lever is applied outward, the claw pieces 18 are disengaged from the side edges of the slots 14, and the floor plate connecting bracket 16 is removed from the floor plate 11. In this case, if two removal tools 24 are inserted into the recesses 25 on both sides in the longitudinal direction of the floor plate connecting bracket 16 and operated, the two can easily be removed, but it is also possible to remove them with one removal tool.

The floor plate connecting bracket 16 of the embodiment is provided with three claw pieces 18 which are engaged with the side edges of the slots 14. For example, the second slot 1 from the end of the floor plate 11 is provided.
5 may be provided so as to engage with 4, or 3 from the end.
For example, seven slots may be provided so as to be engaged with the second slot 14. This further enhances the strength of the connection. Also, since the shape of the floor plate connecting bracket 16 is suitably symmetrical with respect to the butted ends of both floor plates 11, an odd number of slots 14 is appropriate, but an even number of slots 14 may be used. Also,
The structure which does not provide the nail | claw piece 18 in the slot-shaped part 14 'formed in the butting edge part of both floor board materials 11 may be sufficient. Further, it is appropriate that the interval between the claw pieces 18 is the slot pitch. However, in a case where the slot 14 on the end side is skipped and the claw piece 18 is engaged with the slot 14 at the back, the slot pitch is set to It becomes an integral multiple.

FIGS. 6 and 7 show another embodiment. The floor plate connecting bracket 26 of this embodiment has a structure in which a concave receiving portion 28a for receiving a reinforcing rod 29 passing below the continuous portion 15 of the floor plate 11 is provided at the distal end side of each claw piece 28. . When the floor plate members 11 are connected to each other by the floor plate connection metal fittings 26, as shown in FIG. 7, a reinforcing rod 29 having a length of, for example, about several slot pitches is connected to the continuous portion 15 of the two floor plate members 11 which are abutted. The lower side is passed through in the longitudinal direction, and the concave receiving portion 28a of the claw 28 of the floor plate connecting bracket 26 is first hooked on the reinforcing bar 29, and then rotated downward as shown by the arrow in FIG. The floor plate connecting fitting 26 is fitted to the side portion 20 of the floor plate 11. In this configuration, since the claw pieces 28 are securely engaged with the reinforcing rods 29, there is no danger that the floor plate connecting fittings 26 will be unnecessarily detached from the side portions 20 of the floor plate 11, and the reinforcing rods 29 are connected. Further increase the bending stiffness of the part.

FIG. 8 shows still another embodiment. The floor plate connecting bracket 36 of this embodiment is provided on the lower surface 17b of the main body 17.
Is formed as an acute-angled bent portion that engages with the edge of the horizontal portion 13a of the L-shaped leg portion 13 of the floor plate material 11, and the guide curved surface portion 38a is formed on the tip of the claw piece 38.
Is formed. In this case, the floor plate connecting bracket 36 first engages the lower folded portion (engaging piece 39) with the edge of the horizontal portion 13a of the L-shaped leg portion 13 and uses this edge portion as a fulcrum in FIG. Rotate in the direction of the arrow to engage the side portion 20 of the floor panel 11.

The number of engaging pieces provided at the end of the lower surface 17b of the main body 17 in the floorboard is not limited to two in the embodiment, but may be three or more. It may be continuous.

Further, the purpose of the floor plate material to which the present invention is applied is arbitrary, and in the description, it is described as a temporary use. However, even when the floor plate material is used as an original floor or a passage such as a work floor in a factory or a safety passage, etc. The present invention can be applied.

[0022]

According to the floor plate connecting bracket of the present invention, the two floor plates can be connected by a simple operation of fitting the fitting to the left and right sides of the connecting portion between the floor plates. The connection work between the plate materials becomes extremely easy. Further, since there are no bolts and screw holes, there is no danger that the bolt threads or screw holes cannot be used due to rust or mud adhesion.

As in the case of the floor plate connecting metal fitting of the present invention, the structure in which the left and right sides of the fixed length portion of the connecting portion between the floor materials are fitted and held bears the bending moment acting on this connecting portion. And the connecting portions can be connected with sufficient rigidity. Therefore, even if the connecting portion between the floor boards is located between the beams, the weight of the pedestrian can be easily supported.

The floor plate connection metal fittings used on the left and right of the floor plate material can be used with the same shape but in different directions. Therefore, only three kinds of connection metal fittings which were conventionally required are required, and only one kind is required. Becomes easier.

According to the second aspect of the present invention, since the concave receiving portion of the claw engages with the reinforcing bar, the floor plate connecting bracket is firmly attached to the floor plate and the reinforcing bar is connected to the connecting portion. Further increase bending rigidity.

According to the fourth aspect, when the connection between the floorboards is released, the removal tool is inserted into the recess formed on the inner surface of the vertical portion of the main body to easily connect the floorboard connection fitting. Can be removed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor plate connecting bracket according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state in which floor boards are connected to each other in the longitudinal direction using the floor board connection metal fitting of FIG. 1;

FIG. 3 is a perspective view showing a main part of FIG. 2;

FIG. 4 is an enlarged sectional view taken along the line AA of FIG. 2;

FIG. 5 is an enlarged sectional view taken along line BB of FIG. 2;

FIG. 6 is a sectional view showing another embodiment of the present invention and corresponding to FIG. 4;

FIG. 7 is a plan view of the embodiment of FIG. 6;

FIG. 8 shows still another embodiment of the present invention.
FIG.

FIG. 9 is a perspective view illustrating a connection structure between floor boards using a conventional connection fitting.

FIG. 10 is an enlarged cross-sectional view of a connecting metal part in FIG. 9;

FIG. 11 is a view for explaining a conventional problem, and is a view showing a case where a connecting portion between floor plates comes to an intermediate position between beams.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Beam 11 Floor board material 12 Floor surface part 12a Floor surface edge 13 L-shaped leg part 13a Horizontal part 13b Vertical part 14 Slot 15 Continuation part 16, 26, 36 Floor plate connecting metal 17 Body part 17a Upper surface part 17b Lower surface part 18, 28 Claw piece 24 Removal tool 25 Concave part 28a Concave receiving part 19, 39 Engagement piece

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Kanayama 64-15, Nishikinanoi, Showa-cho, Kita-Katsushika-gun, Saitama (72) Inventor Masuo 4-29-23 Inari, Soka-shi, Saitama (56) References 2-53415 (JP, U) JP-A 61-157649 (JP, U) JP-A 41-1721 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 5/02 E04G 5/08 E04G 7/20 E04B 1/60

Claims (4)

(57) [Claims] 1. A floor having a cross-sectional shape having L-shaped legs facing inward on both sides of a floor surface, slots having a width direction at predetermined intervals in the floor surface, and a shallow inverted U-shape between the slots. A floor plate connecting metal fitting used to connect in series in a longitudinal direction metal floor plate members formed with a continuous portion of a cross section, the U-shaped cross section holding a side of the floor plate material at the position of the slot. A plurality of slots provided at a pitch of the slot or an integral multiple of the slot pitch so as to protrude from the upper surface of the U-shaped section of the main body toward the center of the floor plate and engage with the side inner edge of the slot; And an engaging piece protruding from the lower surface of the main body to the center of the floor plate and engaging with the edge of the horizontal portion of the L-shaped leg. 2. The method according to claim 2, wherein a concave receiving portion for receiving a reinforcing rod passing through a lower side of the continuous portion is formed at a tip of each of the claw pieces so as to be passed between the two floor plates abutted. The floor plate connecting metal fitting according to claim 1, characterized in that: 3. A bent portion for engaging an edge of a horizontal portion of an L-shaped leg of a floor plate is formed on a lower surface of the main body, and a curved surface for guiding is formed on a tip of the claw. The floor plate connecting metal fitting according to claim 1, characterized in that: 4. A concave portion in which a rod-shaped removal tool can be inserted from the longitudinal edge of the main body portion is formed on the inner surface side of the longitudinal end portion of the vertical portion of the main body portion having a U-shaped cross section. The floor plate connecting metal fitting according to claim 1, wherein: