JPH043043Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention is an expansion joint, more specifically, a cover material is provided in the gap between building frames via a spring member and two elastic members, and it is designed to prevent uneven settlement. 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 vibrations, etc.

(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 deflected to prevent deformation of the cover material, and the cover material can respond to the deformation. 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 frame structure movement is completed, the cover material loses its pressing force against the building frame and a gap is created between the two, which may cause the cover function to be impaired or the cover material to fall off. On the other hand, increasing the elasticity of the spring conversely has the disadvantage that the adhesion strength of the cover material to the building frame decreases.

(Technical problem of the invention) The present invention solves the above-mentioned drawbacks and 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 attaches the above-mentioned support members to each of these supporting members. Both sides of a plurality of substantially W-shaped spring members arranged at intervals along the gap are engaged, and the gap is connected to the support member via the spring members or a holder for attaching a cover material attached to the spring members. In the expansion joint to which the covering material is attached, 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 penetrated into the convex curved part at the center of the spring member. a first elastic member is disposed between the distal end of the fixing member and the back surface of the central convex portion of the spring member; It is characterized in that a second elastic member is disposed between the back surface of both side inclined parts.

(Operations and effects of the invention) As described above, according to the expansion joint of the invention, the elasticity of the spring member and the elasticity of the elastic member act synergistically between the cover material and the support member. Therefore, 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 such displacement. Can absorb part of the displacement. Moreover, the first elastic member can cope with displacement in the vertical direction of the spring member, and the second elastic member can cope with displacement in the lateral direction. The response force of the spring member is expanded and improved, so that 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 (wall frames) 1, 1, 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 attached via the spring member 3, the fixing member 5 on the back side is projected from the center of the cover material 4, and the fixing member 5 is attached to the convex curved portion 3a at the center of the spring member 3. A first elastic member 6 is inserted between the fixing member 5 and the spring member 3.
and a second elastic member 7.

A locking edge 8 facing outward of the gap S and a water stop plate fitting groove 9 are formed in the supporting members 2, 2.

The cover material 4 has a width sufficient to cover the building frame gap S, and has bolts on the back side (gap S side) in the center.
A screw-shaped fixing member 5 is provided protrudingly, and airtight members 10, 10 are attached to both ends.

As shown in FIG. 2, the spring member 3 has concave curved portions 3 on both sides of a convex curved portion 3a forming a central portion.
b, 3b are connected to form a W-shape, and locking portions 12, 12 are formed at the tips of the concave curved portions 3b, 3b on both sides, and the convex curved portion 3a is integrally formed with a concave shape. It is formed by cutting and raising the second elastic member 7 with a through hole or notched groove and forming it in an inverted shape, and the locking portions 12, 12 are held in a pinched manner by the locking edges 8 of the support members 2, 2. The fixing member 5 passes through a through hole 13 formed in the central convex curved portion 3a.

A first elastic member 6 made of a coil spring, rubber, plate spring, etc. is disposed between a nut-shaped, plate-shaped, etc. stopper member 14 screwed onto the tip of the fixing member 5 and the back surface of the convex curved portion 3a. is installed. Further, a second
An elastic member 7 is provided.

In the above configuration, the cover material 4 and the support member 2,
2, the elasticity of the spring member 3 and the first elastic member 6
Therefore, even if the displacement of the opposing building frames 1, 1 is large, the first elastic member 6 and the second elastic member 7 can absorb a part of the displacement. The response force of the spring member 3 is expanded and improved, so that the cover material 4 is not deformed and can always be tightly and tightly bonded to both building frames 1, 1 at all times. In other words, when only the spring member 3 is used, which widens the gap S between the building frames as the building frames 1 and 1 move, the spring member 3 is pulled to both sides and deformed, as shown by the dashed line in FIG. death,
The convex curved portion 3a rises. However, at this time the first
The elastic member 6 extends laterally and is prevented from rising together with the fixing member 5 and the second elastic member 7, so the cover material 4 is held in the same position and there is no gap between it and the building frame 1. occurrence is prevented. On the other hand, when only the spring member 3 is used, which narrows the gap S between the building frames as the building frames 1 and 1 move, the spring member 3 is pushed into the center and deformed, forming a convex shape, as shown by the dotted line in the figure. The degree of curvature of the curved portion 3a increases and it sinks into the inter-frame gap S. However, at this time, as the first elastic member 6 contracts,
Since the second elastic member 7 acts synergistically to prevent the convex curved portion 3a from curving, the fixing member 5 is prevented from sinking, and unreasonable force is prevented from being applied to the cover material 4. Note that, in normal cases, the spring force of the spring member 3 may be set to be equal to or greater than the elasticity of the first elastic member 6 and the second elastic member 7.

Note that, as shown in FIG. 3, the second elastic member 7 has a central portion 7a that penetrates the fixing member 5, and both ends 7b, 7b of the second elastic member 7 that extend through the convex curved portion 3 of the spring member 3.
The second elastic member 7 may be configured to be fastened or clamped to both inclined portions of the second elastic member 7, or as shown in FIG.
As shown in the figure, the second elastic member 7 may be formed in an annular shape. Note that 15 is a central hole or notch of the second elastic member 7. Furthermore, when the second elastic member 7 is formed into an annular shape, as shown in FIG.
The semicircular members 7c and 7d may be combined to form an annular shape.

Similarly, regarding the spring members 3, as shown in FIG. 5 or 6 above, a pair of U-shaped spring members 3
c, 3c may be integrally connected with screws or the like to form a W-shape, or may be H-shape, etc. The manner in which the spring member 3 and the support members 2, 2 are engaged is also shown in Fig. 1. Instead of locking by biting as in the above, locking by hook may be used.

Furthermore, regarding the manner of attachment of the cover material and the fixing member 5, as shown in FIG. The fixing member 5 may be fixed to the cover material 4 by forming a locking receiving portion 17 and locking the locking protrusion 16 of the cover material to the locking receiving portion 17 of the fixing member 5.

Next, the above-mentioned expansion joint configuration is not limited to the example shown in FIG. 1, but can also be applied when the building frame is a wall frame or a roof frame.

Therefore, each of these cases will be explained below.

First, in Figure 7, the opposing building frame is wall frame 2.
0 and 21, an example of an expansion joint provided at an inside corner is shown when the surface of one of these wall bodies 20 and the surface of the other wall body 21 are perpendicular to each other. 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 8 and a cover material engagement edge 2.
4 and a water stop plate fitting groove 9 are provided, and the support member 2 of the other wall frame 21 is provided with a cover material locking edge 8 and a water stop plate fitting groove 9. Both of the locking edges 8, 8 are provided facing each other on both sides of the frame body gap S,
A W-shaped spring member 3 is attached. Cover material 4
As in the example shown in FIG. The elastic member 6 and the second elastic member 7 are installed in the gap S between the skeletons.

Both ends of the cover material 4 abut against the ends of the building frames 20 and 21 via an airtight material 26, and one end edge engages with the engagement edge 24.

Next, FIG. 8 shows an example of an expansion joint provided on opposing parapets.

Short mounting members 31 are fixed at intervals on the end of the parapet 30 on the side of the gap S, and a long supporting member 2 with a draining portion 32 is fixed onto the mounting members 31. A locking edge 8 and an airtight material fitting groove 33 are formed in each of the support members 2.
Both locking edges 8, 8 are provided facing each other on both sides of the frame gap S, and both ends of the W-shaped spring member 3 are locked. A cover material attachment holder 16 is further attached to the spring member 3, and the cover material attachment holder 16
A fixing member 5 is protruded from the back side of the central part of the spring member 3, and the fixing member 5 passes through the spring member 3, and there is a gap between the stop member 14 at its tip and the back surface of the convex curved portion 3a of the spring member 3. The first elastic member 6 and the second elastic member 7 are installed in the gap S between the frames. Both ends of the cover material 4 are engaged or fixed to both sides of the holder 16.

As described above, the cover material attachment holder 16 is attached to the spring member 3, and the cover material attachment holder 16 is attached to the spring member 3.
It may be configured such that the cover material 4 is attached to.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of the expansion joint according to the present invention, Fig. 2 is a perspective view of the spring member,
FIGS. 3, 4, and 5 are sectional views of main parts showing other examples of the second elastic member and the spring member, respectively, and FIG. 6 is a cross-sectional view of another example of the spring member, the cover material, and the fixing member. 7 and 8 are cross-sectional views showing other examples of arrangement of the expansion joint. Codes 1, 20, 21, 30...Building frame, 2...
...Support member, 3...Spring member, 4...Cover material,
5... Fixed member, 6... First elastic member, 7...
Second elastic member, 14... Stopping member.

Claims (1)

[Claims for Utility Model Registration] Supporting members are fixed to building frames provided at intervals, and a plurality of substantially W-shaped spring members are attached to each of these supporting members at intervals along the gaps. In an expansion joint in which both sides are engaged and a cover material covering the gap is attached 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 the cover A fixing member is made to protrude from the center of the material attachment holder to the back side, and the fixing member is passed through the convex curved part at the center of the spring member, and the tip of the fixing member and the back side of the central convex part of the spring member are connected to each other. a first elastic member is disposed between the
An expansion joint characterized in that a second elastic member is disposed between the tip of the fixing member and the back surface of both side inclined parts of the convex curved part at the center of the spring member.