JPH0412781B2 - - 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. 49-31936, a supporting member is fixed to each building frame, a plurality of spring members are attached to the supporting member along the 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 spring members arranged at intervals within the gap are attached to the supporting member, and the gap is attached to the supporting member via the spring member or a holder for attaching a cover material attached to the spring member. In an expansion joint to which a cover material covering is fixed, a fixing member is protruded from the center of the cover material or a holder for attaching the cover material to the back side, and the fixing member is passed through the center of the spring member. The present invention is characterized in that an elastic member is interposed between the tip of the fixing member and the back surface of the center portion, and a holding mechanism is provided for holding the fixing member in the center 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. Moreover,
The fixed member is always held in the center of the spring member by the holding mechanism, so as each building frame changes,
Even if the fixing member is tilted, the elasticity of the spring member and the elastic member always works well to prevent a gap from opening between the cover material and the building frame.

(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 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 fixing member 8 in the form of a bolt, screw, plate, etc. is provided protruding from the side), and airtight members 10, 10 are attached to both ends.

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,
An elastic member 15 made of a coil spring, rubber, plate spring, etc. is provided between a nut-shaped, plate-shaped, etc. stopper member 14 attached to the tip of the fixing member 8 by screwing, etc., and the back surface of the convex curved portion 3a. is interposed.

Next, in the above expansion joint,
A holding mechanism a for holding the fixing member 8 at the center of the spring member 3 is provided. This holding mechanism a
Both sides of the stopper member 14 are extended to the extent that they protrude outward from the convex curved portion 3a of the spring member 3, and the ends thereof are cut and raised by cutting and raising the convex curved portion 3a as shown in dotted lines. It is constructed by elastically abutting the inner sides of the pieces 40, 40.

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 due to the reaction force 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 Gap S between skeletons
sink inside. However, at this time, the elastic member 15 absorbs the deformation and contracts to prevent the fixing member 8 from sinking, thereby preventing excessive force 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 elastic member.

Furthermore, even if the fixing member 8 is temporarily tilted due to the relative displacement of the building frames 1, 1 as described above, the reaction force of the cut and raised pieces 40, 40 constituting the holding mechanism a Since the fixing member 8 is always held at the central curved portion 3a of the spring member 3,
As shown by the two-dot chain line in the figure, the building frame 1,
Even if one of the outer surfaces of the cover member 1 is displaced so as to protrude more than the other outer surface, the fixing member 8 is prevented from tilting, thereby preventing a gap from forming between the cover material 4 and the building frame 1. It can be prevented.

Note that the holding mechanism that holds the fixing member 8 at the center of the spring member 3 is not limited to the above-mentioned example. For example, as shown in FIG. 3a, a coil spring-like spacer 41 is fixed to the fixing member 8,
The outer periphery of the spring member 3 may be in contact with inner walls on both sides of the convex curved portion 3a of the spring member 3. As shown by reference numeral 42 in FIG. 1B, this spacer may be in the shape of a leaf spring or bellows, and a portion thereof may protrude outward from the convex curved portion 3a. Furthermore,
As shown in FIG. 3C, a panel-shaped spacing member 43 having one end fixed to the concave curved portions 3b and the other end disposed within the convex curved portion 3a is attached to the inner surface of both ends of the stopper member 14. It may be configured such that they are in contact with each other.

Furthermore, the spring member 3 may be a pair of U-shaped spring members that are integrally joined by screws or the like to form a W-shape (see Fig. 4), or a U-shaped spring member 3 as shown in Fig. 6. Alternatively, the elastic member 15 may be interposed between the tip of the fixing member 8 and the back surface of the center of the spring member 3, and the spacing member 51 may be provided on the fixing member. Alternatively, the spring shown in FIG. Part 3
The elastic member 1 is formed in an H-shape as shown in FIG.
5 may be interposed, and a spacer 52 may be provided on the fixed member. Also, regarding the manner of engagement between both ends of the spring member 3 and the engagement edges of the support members 2, 2, the first
Rather than locking by biting as shown in the figure, locking may be done by hooking.

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 4, 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 edge 2.
4 and a water stop plate fitting groove 7 are provided, and the support member 2 of the other wall frame 21 is provided with a cover material locking edge 5 and a water stop plate fitting groove 7. Both the locking edges 5, 5 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
Similarly to the example shown in FIG. 1, an elastic member 15 is provided between the stopper member 14 at the tip of the fixing member 8 projected on the back side and the back side of the convex curved portion 3a of the spring member 3.
It is attached to the gap S between the skeletons by interposing it. The fixing member 8 is held at the center of the spring member 3 by a leaf spring-like spacing member 44 .

Next, the spring members 3 are fixed to the locking edges 5, 5 formed on the support members 2 of both wall frames 20, 21,
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 is an example of an expansion joint provided on a parapet opposite to that shown in FIG.

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. A holder 16 for attaching a cover material is further attached to the spring member 3, and a fixing member 8 is protruded from the back side of the central part of the holder 16 for attaching a cover material. An elastic member 1 is provided between the stop member 14 at the tip end and the back surface of the convex curved portion 3a of the spring member 3.
5, it is attached to the gap S between the skeletons. Both ends of the cover material 4 are fastened or engaged to both ends of the holder 16. Further, a drainage material 33 is attached to the locking grooves 32, 32 formed on the back side of the engaging portion 6 of the support members 2, 2 and to the attachment members 45, 45 fixed to the support members 2, 2. .

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 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. 3 a, b,
c is a sectional view of another example of the holding mechanism, FIGS. 4 and 5.
The figure is a sectional view showing another example of the expansion joint, and FIGS. 6 and 7 are explanatory views of other examples of the spring member. 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, 40... Cut and raised piece, 4
1, 42, 43, 44... Spacing member.

Claims (1)

[Scope of Claims] 1 Support members are fixed to building frames provided at intervals, and a plurality of springs arranged at intervals within the above-mentioned distance are attached to the support members fixed to each of the building frames. In an expansion joint in which both sides of the member are attached 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 Alternatively, 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 an elastic member is provided between the tip of the fixing member and the back of the center. 1. An expansion joint characterized in that a holding mechanism is provided to hold the fixing member in the center of the spring member.