JPH0437212B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an expansion joint, more specifically, a cover material is provided in the gap between building frames through a spring member and an elastic member, and is used to prevent uneven settlement and vibration. This invention relates to an expansion joint that expands and improves the ability of a spring to respond to the relative displacement of both building frames caused by such factors.

(Prior art) In general, expansion joints installed in building frames with gaps are
As shown in Publication No. 40-31936, a supporting member is fixed to each building frame, a plurality of spring members are attached to the supporting member along the above-mentioned gap, and a cover material is fixed only to the spring member. Alternatively, as shown in Japanese Utility Model Application Publication No. 57-80509, a spring receiving member is arranged between each building frame, and a cover is inserted between the spring receiving member and the cover material via a spring. There are known methods for attaching materials. All of these have a structure in which the cover material is attached via springs, so when the opposing building frames move in relatively different directions due to uneven settlement, vibration, etc., the spring member and spring receiver A spring member such as a member is bent to prevent the cover material from deforming, and the cover material can respond to the displacement. However, there is a limit to the deformation of a spring member, and if it bends beyond this spring stress limit, one spring member alone will not be able to withstand the deformation pressure and will not return to its original shape. Sometimes I put it away.
For this reason, after the structural change is completed, the pressure of the cover material against the building frame is lost, and a gap is created between the two, which may cause the cover function to be impaired or the cover material to fall off. To solve this problem, it is possible to increase the elasticity of the spring, but this has the disadvantage that the adhesion strength of the cover material to the building frame is reduced.

(Technical Problem of the Invention) The present invention solves the above-mentioned drawbacks, and in particular expands and improves the ability of the spring member to respond to the relative displacement of the building frames caused by uneven settlement, vibration, etc. The technical problem is to provide an expansion joint that can be kept in close contact with the building frame at all times.

(Means for Solving the Problems) In order to solve the above problems, the expansion joint according to the present invention fixes supporting members to building frames provided at intervals, and fixes them to each of these building frames. Both sides of a plurality of W-shaped spring members arranged at intervals within the gap are engaged with the supporting member, and the spring member is attached to the supporting member via the spring member or a holder for attaching a cover material attached to the spring member. In the expansion joint to which the cover material covering the gap is fixed, a fixing member is protruded from the center of the cover material or the holder for attaching the cover material to the back side, and the fixing member is passed through the center of the spring member. In addition, an elastic member is interposed between the tip of the fixing member and the back surface of the central portion of the spring member.

(Operations and Effects of the Invention) As described above, according to the expansion joint of the present invention, the elasticity of the spring member and the elasticity of the elastic member act between the cover material and the support member. Even if the building frames move apart or approach each other due to relative movement of the opposing building frames, and the gap between the building frames becomes wider or narrower, the elastic member will not respond to the displacement in this way. Since a part of the cover material can be absorbed, the response force of the spring member is expanded and improved, and therefore the cover material is not deformed, and its end portions can always be kept in a good state of tight contact with both building frames.

(Example) Hereinafter, an example according to the present invention will be described with reference to the drawings.

In FIG. 1, the symbol A indicates an expansion joint. This expansion joint A is constructed by fixing support members 2, 2 to the ends of building frames (floor frames) 1, 1, respectively, which are provided with a gap S between them, and A plurality of W-shaped spring members 3 are engaged at intervals along the
The cover material 4 is inserted through the spring member 3 and the elastic member 15.
It is fixed.

The supporting members 2, 2 are formed with a locking edge 5 facing outward of the gap S, a cover material engaging portion 6, and a water stop plate fitting groove 7.

The cover material 4 has a width that covers the building frame gap S and engages on the above-mentioned engaging part, and has a width that covers the building frame gap S
A rod-shaped fixing member 8 such as a bolt or screw is provided protrudingly on the side), and the engaging portions 6 of the supporting members 2, 2 are provided at both ends.
An engagement piece 10 is fixed to the upper cushion plate 9.

The spring member 3 has a convex curved portion 3a forming a central portion.
It is formed into a W-shape by connecting concave curved parts 3b, 3b on both sides of the locking part 1 formed at the tip of the concave curved parts 3b, 3b on both sides.
2 is locked to the locking edge 5 of the support members 2, 2,
Through hole 13 formed in the central convex curved portion 3a
The fixing member 8 is passed through. moreover,
A nut shape screwed onto the tip of the fixing member 8;
An elastic member 15 made of a coil spring is interposed between the plate-like stop member 14 and the back surface of the convex curved portion 3a.

In the above configuration, the cover material 4 and the support member 2,
2, the elasticity of the spring member 3 and the elasticity of the elastic member 15 act, so even if the displacement of the opposing building frames 1, 1 is large, the elastic member 15 will absorb a portion of the displacement. Since the cover material 4 is able to absorb this, the response force of the spring member 3 is expanded and improved, and therefore the cover material 4 is not deformed and can always be tightly and tightly bonded to both building frames 1, 1 at all times. That is, when the gap S between the building frames 1, 1 widens due to the movement of the building frames 1, the spring member 3 is pulled on both sides and deformed, as shown by the dotted line in FIG. 3a stands out. However, at this time, the elastic member 15 expands and prevents the fixing member 8 from lifting up, so the cover material 4 is held in the same position and a gap is prevented from forming between it and the building frame 1. On the other hand, when the gap S between the building frames 1, 1 narrows due to the movement of the building frames 1, 1, the spring member 3 is pushed into the center and deformed, as shown by the dashed line in the figure, and the convex curved portion 3a is It sinks into the gap S between the building blocks. However, at this time, the elastic member 15 shrinks and the fixing member 8 is prevented from sinking, so the cover material 4
This prevents excessive force from being applied to the Note that the spring force of the spring member 3 should normally be set to be equal to or greater than the elasticity of the elastic member, and can be adjusted by rotating the fixed member 8 relative to the stop member 14. can do.

By the way, each structure of the expansion joint is not limited to the above-mentioned example. For example, a distal end portion of the stopper member 14 may be integrated with or a separate member may be engaged with the spring member 3 to prevent rotation. Further, the elastic member 15 is not limited to a coil spring. It may also be made of rubber, leaf spring, etc. In addition, as shown in FIGS. 3 and 4, the spring member 3
In some cases, a short cover material attachment holder 16 is attached to the holder 16, and the cover material 4 is attached to the holder 16. In this case, a fixing member 8 protruding from the back side of the central part of the cover material attachment holder 16 is attached to the cover material attachment holder 16. What is necessary is just to adopt the structure which allows the spring member 3 to penetrate. Furthermore, the fifth
As shown in the figure, the spring member 3 has a pair of U
The spring members 3c, 3c may be integrally connected by screws or the like to form a W-shape, or an H-shape, and the spring member 3 and the support member 2,
Regarding the manner of locking with 2, the locking method may be not the locking by biting as shown in FIG. 1, but the locking by hooking. It may be a structure in which the fixing member is bent and processed, or it may be an attachment structure in which the fixing member is fitted into the cover material and locked therein.

Next, the above-mentioned expansion joint configuration is not limited to the example in which the surfaces of the floor skeleton and floor skeleton are continuous as shown in Figure 1, but also when the building skeleton is a wall skeleton or when the building skeleton is a roof skeleton. It can also be applied in cases.

Therefore, each of these cases will be explained below.

First, in Figure 6, the opposing building frame is wall frame 2.
0 and 21 show an example of an expansion joint provided at an inside corner when the surface of one of these wall bodies 20 is perpendicular to the surface of the other wall body 21. Support members 2 and 2 are fixed to the wall bodies 20 and 21, respectively, and the support member 2 of one of the wall bodies 20 has a cover material locking edge 5 and a cover material engagement portion 6.
and a water stop plate fitting groove 7 are provided.
The first support member 2 is provided with a cover material locking edge 5, a locking edge 24 of an auxiliary cover 25, and a water stop plate fitting groove 7. Both of the locking edges 5, 5 are provided facing each other on both sides of the frame gap S, and the W-shaped spring member 3 is secured thereto. Similar to the example shown in FIG. 1, the cover material 4 includes a stop member 14 at the tip of the fixing member 8 protruding from the back side thereof, and a convex curved portion 3a of the spring member 3.
It is attached to the gap S between the skeletons by interposing an elastic member 15 between it and the back surface of the frame.

Next, an auxiliary cover 25 is secured to the locking edge 5 formed on the support member 2 of one wall frame 20, and the edge of the auxiliary cover 25 is overlapped with the end of the cover material 4, and It abuts on the edge with an airtight material 26 interposed therebetween. Note that the cover material 4 and the auxiliary cover 25
The overlapping portion may be formed integrally with the above.

Next, FIG. 7 shows an example of an expansion joint when the opposing building frame is a parapet.

Support members 2, 2 are fixed to the ends of the parapets 30, 30 on the side of the gap S, respectively.
2 is provided with a cover material locking edge 5, a cover material engaging portion 6, and a water stop plate fitting groove 7, and both locking edges 5, 5 are provided facing each other on both sides of the frame gap S, A W-shaped spring member 3 is attached. Similar to the above-mentioned example, the cover material 4 has an elastic member 15 interposed between the stopper member 14 at the tip of the fixing member 8 protruding from the back side thereof and the back surface of the convex curved portion 3a of the spring member 3. By doing so, it is attached to the gap S between the skeletons. Further, a plurality of holders 31 are fixed at intervals along the upper end surface of one of the parapets 30, and these holders 31 and the cover material engagement portion 6 of the support member 2
A locking groove 32 formed on the back side of the
is attached. 34 is a cushion.

In addition, in the case of such a structure, the support member 2 and the draining material 33 may be integrally formed as shown in FIG.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the main part of the expansion joint according to the present invention, FIG. 2 is an explanatory diagram of a modification of the expansion joint, and FIGS.
The figure is a sectional view of another example of the spring member, FIG. 5 is a sectional view of another example of the component of the expansion joint, and FIG. 6 is a sectional view of another example of the expansion joint provided in the wall frame. 7 is a sectional view of an expansion joint provided on a parapet, and FIG. 8 is a sectional view of a main part of another example of the expansion joint shown in FIG. 7. Codes 1, 20, 21, 30...Building frame, 2...
...Support member, 3...Spring member, 4...Cover material,
5... Locking edge, 8... Fixing member, 14... Stopping member, 15... Elastic member.

Claims (1)

[Scope of Claims] Support members are fixed to building frames provided at intervals, and a plurality of W-shaped springs are arranged at intervals within the gaps to the support members fixed to each of the building frames. In an expansion joint in which both sides of a member are engaged and a cover material covering the gap is fixed to the support member via the spring member or a holder for attaching the cover material attached to the spring member, the cover material or A fixing member is protruded from the center of the holder for attaching the cover material to the back side, the fixing member is passed through the center of the spring member, and between the tip of the fixing member and the back of the center of the spring member. An expansion joint characterized by having an elastic member interposed therein.