JP2796804B2 - Iron joist connecting tool and beam and iron joist connecting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a steel joist connecting tool used for connecting a beam and a steel joist when assembling a floor of a building, and a method of connecting a beam and a steel joist. About.

[Conventional technology]

Conventional means for connecting beams and joists is performed by means shown in FIGS. 6 to 8. FIG.

Conventional connecting means includes a substrate 101 bent into a U shape,
A metal formed by a pair of claw-shaped fitting portions 102 formed by winding the tip portions in opposite directions provided at one end of 01, and a projection 103 projecting upward at the other end of the substrate 101. Buffer mat 1 having an L-shaped cross-section having, at the center, a connecting metal 104 made of
06 and is performed.

A procedure for connecting the beam 7 and the iron joist 10 using the connection fitting 104 and the buffer mat 106 will be described.

First, a cushion mat 10 is placed on the upper surface of the upper flange 8 of the beam 7.
6 is laid along one side of the upper flange portion 8. Subsequently, the connection fitting 104 is mounted on the upper flange 8 exposed from the groove 105 of the buffer mat 106 such that the upper flange 8 is sandwiched between both ends of the connection fitting 104. At this time, the connecting bracket 104 is bent downward by the plurality of protrusions 103 provided on the other end abutting against the lower surface of the upper flange portion 8, and the reaction force of the substrate 101 causes both ends of the substrate 101 to move to the upper flange portion 8. 8 is firmly clamped so that it does not slip or fall off. Then, the iron joist 10 provided with a fitting hole 107 having a width smaller than that of the fitting portion 102 at a position corresponding to the pair of fitting portions 102 of the connection fitting 104 is inserted into the fitting portion 102 and the fitting hole 107.
Insert with matching. As this procedure, first, the upper part of the fitting part 102 of the connecting fitting 104 is inserted into each fitting hole 107 of the iron joist 10. Subsequently, the iron joist 10 is inserted until the iron joist 10 is placed on the buffer mat 106. However, since the width of the insertion hole 107 is smaller than the width of the insertion portion 102, only the tip portion of the insertion portion 102 passes through the insertion hole 107. The fitting hole 107 is closed by just being pressed. When a strong pressure is applied to the iron joist 10 in this state from above, the fitting portions 102 bend in directions approaching each other due to the pressure and their own weight, and pass through the fitting holes 107. Also,
When the bent fitting portion 102 passes through the fitting hole 107, it returns to its original shape again, and becomes larger than the fitting hole 107 and cannot be removed. Thus, the iron joists 10 are connected to the beams 7 by the connection fittings 104 so as not to come off. Moreover, the fitting portion 102
The tip of the iron joist 10 presses the joist 10 against the buffer mat 106, so that no deviation occurs.

[Problems to be solved by the invention]

However, the beam 7 and the iron joist are not
When the connection 10 is connected, there is a problem that the projection 103 of the connection fitting 104 and the upper flange portion 8 of the beam 7 rub against each other, generating an unpleasant sound such as floor noise. Similarly, there is a problem in that the tip of the fitting portion 102 of the connection fitting 104 and the iron joist 10 rub against each other, generating an unpleasant sound such as floor noise. In addition, in order to perform the repair so that the unpleasant sound does not occur, the connecting fitting 104 must be replaced with a new one, so that the labor and cost required for the repair are enormous. Further, in the conventional means, the connecting fitting 104 is
Since it is necessary to perform two steps, that is, a step of attaching the cushion mat 106 to the beam 7 and a step of attaching the cushioning mat 106 to the beam 7, there is a problem that workability is low and efficiency is low. Furthermore, since the metal connection fitting 104 and the buffer mat 106 made of a material having a buffer property are used, they have to be separately manufactured, so that their respective manufacturing costs are increased, which is uneconomical. There is.

[Means for solving the problem]

This invention has been made in view of the above circumstances, and the specific means is to interpose between the beam and the steel joist to connect them, and to make contact with the beam and the iron joist. A plurality of plates, each of which is arranged in a circle with a gap on one side of a flat plate made of a buffer material such as synthetic resin that absorbs and buffers vibration transmitted from A plurality of flexible iron joist fittings each having a plurality of sets of flexible beam fitting pieces, which are back-to-back on the other surface and whose front claw portions face opposite sides. A plurality of pieces were provided.

Then, by applying pressure to the iron joist connecting device from above, the beam fitting pieces are inserted into insertion holes formed in the upper surface of the beam, and the iron joists are lowered from above and the iron joists are inserted. The beam and the iron joist are connected by fitting the hole into the iron joist fitting piece of the iron joist connecting tool, and the vibration transmitted from contact with these beams and iron joists is transmitted to the plate, the beam fitting piece, and the iron joist fitting. A method of absorbing with a piece and buffering was used.

[Action]

According to the above-mentioned means, by placing the joist connecting member on the beam and applying pressure from above, the beam fitting piece of the joist connecting member is brought into contact with the fitting hole formed on the upper surface of the beam, and further a plurality of The claw portions are inserted into and engaged with the fitting holes while the beam fitting pieces are bent inward while reducing the gap therebetween. Then, by lowering the iron joist from above the iron joist connecting tool, the fitting hole of the iron joist is brought into contact with the iron joist fitting piece of the iron joist connecting tool, and a plurality of the iron joist fitting pieces are further inserted. Is bent so that the claw portion is inserted into the fitting hole and engaged.

When the iron joists are connected on the beam via the iron joists in this manner, the iron joists are formed of a soft buffer material such as a synthetic resin that absorbs vibration transmitted by contact with the beams or the iron joists. Vibration from the beam and the iron joist is absorbed by the steel joist connecting member, and the generation of unpleasant noise is suppressed.

〔Example〕

An embodiment of a steel joist connecting tool and a method of connecting a beam and a steel joist according to the present invention will be described with reference to FIGS.

First, as shown in FIGS. 1 and 2, a steel joist connecting device 1 includes a rectangular flat plate 2 and a plurality of beam fitting pieces 3 protrudingly provided on one surface of the plate 2. A plurality of iron joist fitting pieces 4 protrudingly provided on the other surface of the plate 2 are members formed by integral molding. The beam fitting piece 3 is a flexible claw-shaped member in which four beam fitting pieces 3 are circularly arranged on the other surface of the plate 2 with the claw portions 5a facing outward. One set of the beam fitting pieces 3 is provided at two locations on one surface of the plate 2, that is, a total of two sets of the beam fitting pieces 3 are provided. The two sets of beam fitting pieces 3 are suitably arranged at symmetrical positions on both ends of one surface of the plate 2. A gap 6 is provided between each of the beam fitting pieces 3 so that the beam fitting piece 3 can flex. When the beam fitting piece 3 tries to flex inward, the gap 6 becomes smaller. The beam fitting piece 3 can bend until the gap 6 disappears. The set of beam fitting pieces 3 has a small diameter at the distal end, and gradually increases in diameter as it descends rearward, and decreases in diameter again to form the claw 5a. It has the shape of The iron joist fitting piece 4 is a flexible claw-shaped member having a claw portion 5b whose tip portion has a small width, gradually widens rearward, and has a narrow width again. . A pair of two iron joist fitting pieces 4 that are back-to-back at intervals with the claws 5b facing the opposite side are paired, and two pairs of the joist fitting pieces 4 are arranged side by side. As a set, the one set of iron joist fitting pieces 4 are arranged in two places on the other surface of the plate 2, that is, a total of two sets of iron joist fitting pieces 4 are arranged in parallel. The two sets of iron joist fitting pieces 4 are suitably provided at symmetrical positions in the center of the other surface of the plate 2. Also, in this embodiment,
A total of eight iron joist fitting pieces 4 are used, and two pairs of iron joist fitting pieces 4 are arranged side by side to form one set, but the present invention is not limited to this.

A method of connecting the beam 7 and the iron joist 10 by the iron joist connecting tool 1 will be described with reference to FIGS.

In the upper flange portion 8 of the beam 7, an insertion hole 9 a having a diameter slightly smaller than the diameter of a pair of beam fitting pieces 3 provided on one surface of the steel joist connection device 1 is formed. The fitting holes 9a are formed at a plurality of locations at the same intervals as the intervals between the plurality of sets of beam fitting pieces 3. Subsequently, a plurality of sets of beam fitting pieces 3 of the iron joist connecting device 1
With the fitting hole 9a of the upper flange portion 8. At this time, since the diameter of the fitting hole 9a is larger than the diameter of the tip of the beam fitting piece 3 and smaller than the diameter of the back, the beam fitting piece 3 is formed by only the tip passing through the fitting hole 9a. Is closed. When pressure is applied by means such as hitting the plate 2 with a hammer, the beam fitting piece 3 bends and becomes smaller than the diameter of the fitting hole 9a, and the entire beam fitting piece 3 is fitted into the fitting hole 9a. You. The beam fitting piece 3 that has passed through the fitting hole 9a expands again due to the elasticity of the material, and the claw portion 5a is caught on the peripheral portion of the fitting hole 9a. Next, pre-formed iron joist 10
Of the iron joist fitting 1 of the iron joist connecting device 1 is fitted. At this time, since the width of the fitting hole 9b is formed to be larger than the width of the tip of the iron joist fitting piece 4 and smaller than the rear width thereof, only the tip of the iron joist fitting piece 4 passes through the fitting hole 9b. The fitting hole 9b is closed by just being pressed. And iron joists
By applying pressure from its own weight or from above, the joist fitting piece 4 is bent and becomes smaller than the width of the fitting hole 9b, and the entire joist fitting piece 4 is fitted into the fitting hole 9b. The iron joist fitting piece 4 that has passed through the fitting hole 9b expands again, and the claw 5b is inserted into the fitting hole.
Since the iron joist 10 is hooked on the peripheral portion of the iron joist 9b, the iron joist 10 cannot be removed from the steel joist connecting device 1. As a result, the beam 7 and the iron joist 10 are connected by the iron joist connecting tool 1, and these two connections are performed when the iron joist fitting piece 4 is inserted into the fitting hole 9 b of the iron joist 10, When the attachment piece 3 is inserted into the insertion hole 9a of the beam 7, the presence or absence of an accurate connection can be confirmed by listening to the insertion sound. Further, the material of the iron joist connecting device 1 is a soft material having a buffering property made of a synthetic resin or the like. As a result, even if there is vibration transmitted by contact with the beam 7 or the iron joist 10, the plate 2 Since it is absorbed and buffered by the beam fitting piece 3 and the iron joist fitting piece 4, it is possible to prevent generation of unpleasant sounds such as floor noise. As the material, a soft material having a buffering property, such as a synthetic resin, is used. as a result,
Even if there is vibration transmitted by contact with the beam or iron joist, it is absorbed and buffered by the plate, the beam fitting piece, and the iron joist fitting piece, thereby preventing generation of unpleasant noise such as floor noise. .

〔The invention's effect〕

As is clear from the above description, according to the present invention, a steel joist connecting tool is placed on a beam and pressure is applied from above,
The beam fitting piece of the iron joist connecting tool abuts the fitting hole formed on the upper surface of the beam, and furthermore, the plurality of beam fitting pieces are bent inward while reducing the gap between each other, and the claw portion is inserted into the fitting hole. By inserting the iron joist from above the iron joist connecting tool, and thereby fitting the iron joist fitting hole into the iron joist fitting piece of the iron joist connecting tool, and Since the iron joist fitting piece is bent and the claw portion is inserted into the fitting hole and engaged, the following effects are produced. That is, since the steel joist connecting member is made of a material such as a synthetic resin having a shock absorbing property due to contact with the beam or the steel joist and absorbing vibration at that time, the beam or the steel joist is used. Even if they rub against each other, the plate, the beam fitting piece, and the iron joist fitting piece absorb the vibration and are buffered, so that unpleasant noise between the beam and the iron joist does not occur. And since these beams and iron joists are connected in the up-down direction, they have a strong resistance especially to horizontal rubbing. Also, since the mounting process is simple, workability and efficiency are high. Moreover, since a material such as a synthetic resin is used, the steel joist connecting device can be manufactured at low cost.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is an overall explanatory view of a steel joist connecting tool, FIG. 2 is a bottom view of the steel joist connecting tool, and FIG. FIG. 4 is an explanatory view of a use state showing a connecting procedure between a beam and an iron joist, FIG. 4 is an explanatory view of a use state showing a state where an iron joist is connected to a beam with an iron joist connecting tool, and FIG. 5 is a VV of FIG. Sectional view. 6 to 8 show a conventional technique, FIG. 6 is an overall explanatory view of a conventional connecting fitting, FIG. 7 is an explanatory view of a use state showing a connecting procedure between a beam and a steel joist according to the conventional technique, FIG. 8 is an explanatory sectional view showing a connection state according to a conventional technique. DESCRIPTION OF SYMBOLS 1 ... Steel joist connection tool, 2 ... Plate, 3 ... Beam fitting piece, 4 ... Iron joist fitting piece, 5a, 5b ... Claw part, 7 ... Beam, 9a ... Fitting hole, 9b ... Fitting hole, 10
… Iron joists

Claims (2)

(57) [Claims] An interposed member between a beam and an iron joist for connecting the two, and a material such as a synthetic resin that absorbs and buffers vibration transmitted from contact with the beam and the iron joist. On one surface of a plate on a flat plate, there is provided a plurality of sets of a plurality of flexible beam fitting pieces which are arranged in a circular shape with a gap therebetween and the claw portions at the tips face outward, and An iron joist coupling device comprising a plurality of sets of a plurality of flexible iron joist fitting pieces, which are back-to-back at intervals and whose front claw portions face opposite sides, on the other surface. 2. The iron joist connecting device according to claim 1 is applied with pressure from above to insert the beam fitting piece into an insertion hole formed in the upper surface of the beam, and further from above these iron joist. To lower both the beam and the iron joist by fitting the iron joist insertion hole into the iron joist fitting piece of the iron joist connecting tool,
Vibration transmitted from contact with these beams and iron joists,
A method of connecting a beam and a steel joist, wherein the beam is absorbed by a beam fitting piece or a steel joist fitting piece and buffered.