JPH0426010B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the improvement of expansion joints used in gaps in buildings, and an object of the present invention is to provide an expansion joint that can sufficiently cope with the size of gaps. It is.

[Conventional technology]

Conventionally, as shown in Fig. 4, for example, the floor a of a building
A pair of frame bases 50 and 50 made of extruded aluminum are fixed to the ends of floors a and a', respectively, as an expansion joint to absorb some expansion, contraction and deviation of the gap width L. A water stop plate 51 is installed at the bottom between the frame bases 50, 50, and the frame base 5
0 and 50 are connected via a locking plate 52 made of a stainless steel plate or the like having a substantially W-shaped cross section, and a roller nut 53 attached to the locking plate 52 is connected to the both frame bases 50, A fastening screw 55 inserted through the covering plate 54 extending over the top surface of the locking plate 50 is screwed and fastened, and the gap is fixed by the elasticity of the locking plate 52.
4 is often used (Japanese Patent Publication No. 49-31936).

[Problem that the invention seeks to solve]

However, according to the above configuration, the covering plate 54 is attached by the resistance against the bending load of the locking plate 52 installed between the frame bases 50, 50.
In order for the locking plate 52 to exert a predetermined resistance force, the locking plate 52 having a free width corresponding to the gap width L must be selected and used. Not only does this have an economical problem during construction because it requires the provision of the locking plate 52, but if the gap width L exceeds 100 mm, construction becomes impossible because sufficient supporting force cannot be obtained. It also had this problem.

The present invention has been made in view of the above problems, and aims to provide an expansion joint that allows the use of the same member regardless of the size of the gap width L and has a fastening structure that is easy to construct.

[Means for solving problems]

The expansion joint of the present invention connects the cover plate installed on both frame bases fixed at both floor ends to the hanging member attached to both frame bases via tension springs via mounting screws. It has a structure that is screwed together.

That is, the expansion joint of the present invention is made of aluminum formwork material, and includes a pair of frame bases each fixed to the end of the floor, and a hanging plate of an appropriate width that is suspended over the both frame bases, and has a central part. a hanging member that supports a roller nut on its lower surface so as to be tiltable; a pair of tension springs that connect the hanging member and the frame bases; and a roller nut mounted on the hanging member through a fastening screw. It consists of a cover plate that is screwed and fixed to the cover plate.

[Effect]

When installing the above-mentioned expansion joint in a gap between floors, first frame bases are fixed facing each other along the gap at the end of the floor across the gap, and an appropriate gap is provided between the two frame bases. The hanging member is attached to the hanging plate after one end of each of the two tension springs is hooked in advance to a hanging lug formed protruding from the side of the roller nut support block. Suspended and placed on both frame bases at desired positions, hooked the other ends of both tension springs to the lower inner surfaces of the opposing frame bases, and hung and installed by the elasticity of both tension springs. It will be done. Therefore, the hanging member suspended and fixed by both tension springs has a sufficient degree of freedom in the plane direction in the mounting position, and can be inserted through the covering plate provided on the upper surface of the hanging plate. It is also possible to easily shift the roller nut so that it corresponds to the position of the tightening screw.

In addition, even if the gap width changes or the level of both floors changes due to an earthquake, etc., the hanging members are suspended and fixed by tension springs, so there will be no slippage on the base surfaces of both frames. and fully absorbs fluctuations.

〔Example〕

Hereinafter, one embodiment of the expansion joint of the present invention will be explained with reference to FIGS. It is a frame base of an appropriate length and has a substantially L-shaped cross section.A gasket post 2 is integrally molded on the upper end of the formwork material, and a water stop plate edge receiving post 3 is integrally molded on the lower end of the inner surface. Adjacent to the upper side of the plate edge receiving post 3, small holes 4, 4 are formed at appropriate intervals.
...is arranged and perforated. Further, reference numeral 5 denotes a roller nut 7 having a semi-cylindrical shape on its side with respect to a hanging plate 6 having a sufficient length for the gap width L of the floors a and a'.
A roller nut support block 8 having a groove-shaped cross section is welded and fixed to the central lower surface of a hanging plate 6 having an appropriate width, and both side walls of the roller nut support block 8 are perforated. The locking protrusion 1 of the roller nut 7 is inserted into the slit holes 9, 9.
0 and 10 are loosely fitted and integrally supported so as to be swingable and tiltable, and sufficiently large through holes 11 and 12 are bored in the hanging plate 6 and the roller nut support block 8, respectively, and screwed into the roller nut 7. Fastening screw 13
to penetrate. Reference numerals 14 and 14 designate hanging ears formed protruding from both ends of the roller nut support block 8, and the hanging ears 14 and 14 are connected to one ends of tension springs 15 and 15 each having an appropriate free length. , the other ends are engaged with retaining rings 16, 16 whose shafts are inserted and fastened into the small holes 4, 4 formed in the frame bases 1, 1, respectively, and the tension of the tension springs 15, 15 is Using elastic force, the hanging member 5 is installed on the upper surface of band-shaped gaskets 17, 17 fitted to the gasket posts 2, 2 of both frame bases 1, 1. Reference numeral 18 denotes a cover plate that is attached to the upper surface of the hanging members 5, 5... to cover the gaps between the floors a and a', and is inserted through the fastening screw insertion holes 19, 19... provided in the center. The respective fastening screws 13 are screwed and fastened to the roller nuts 7 of the hanging member 5, and fixed. At this time, the roller nut 7 has its cylindrical part surface in contact with the bottom surface of the hanging plate 6, and the through holes 11 and 12 of the roller nut support block 8 and the locking protrusions 10 and 10 are loosely fitted, so that the The axial direction of the screw can easily change to the direction of the fastening screw 13 that engages with the female screw, and follows the tilting of the hanging plate 6.

In the figure, reference numeral 20 denotes a water stop plate whose both edges are engaged with the water stop plate edge receiving posts 3, 3 of both frame bases 1, 1.

By making the length of the hanging member 5 sufficiently large, the expansion joint with the above structure can be constructed regardless of the size of the gap width L, and can be suspended and supported by the tension springs 15, 15. Because of this structure, it is possible to easily cause slippage due to relative movement between the two floor surfaces a and a', and it has excellent earthquake resistance.

In addition, in the above configuration, the tension spring 1
Various structures are possible for the connection structure 5, and as shown in FIG.
Alternatively, a holder post 21 may be formed instead, and a holder 22 having a tension spring connecting hook portion 23 may be fitted onto the holder post 21 to obtain the same structure as in the above embodiment.

〔Effect of the invention〕

As mentioned above, the expansion joint of the present invention can be used regardless of the width of the gap between floors, and has the feature that it can be constructed even in areas with a large gap width, and has extremely practical effects. big.

[Brief explanation of drawings]

Fig. 1 is a front cross-sectional view of one embodiment of the present invention in a construction state, Fig. 2 is an exploded perspective view of the same, and Fig. 3 is an exploded perspective view of main parts showing another embodiment of the tension spring mounting structure. FIG. 4 is a front sectional view showing the conventional construction state. 1... Frame base, 5... Hanging member, 6... Hanging board,
7... Roller nut, 13... Fastening screw, 15
... Tension spring, 18 ... Covering plate,
a, a′...floor.

Claims (1)

[Claims] 1. A pair of fixed frame bases are installed facing each other on the edges of both buildings with a gap in between, and a plurality of hanging members stretched between the upper surfaces of the two frame bases are tensioned. each elastically suspended and fixed to the frame base via a spring,
In an expansion joint installed in a gap between buildings, the expansion joint is appropriately arranged in the direction of the frame base, and a covering plate covering the gap is fastened and fixed to the hanging member via a fastening screw. The hanging member has a structure in which a roller nut having a semi-cylindrical side surface shape, in which a female screw is screwed in the center of a hanging plate having an appropriate width through a roller nut support block, is swingably and tiltably supported. A telescopic device characterized in that a fastening screw for fastening the cover plate is screwed into and tightened to the roller nut, and one end of the tension spring is connected to a hook protruding from the roller nut support block. Fittings. 2. A retaining ring fixed to the frame base side end of the tension spring in a small hole drilled in the frame base;
Alternatively, the expansion joint according to claim 1 has a structure in which the expansion joint is connected to a holder formed by fitting into a groove-shaped holder post integrally formed on the frame base.