JPH0216425B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to structures of two adjacent buildings, such as roof to roof, roof to wall, wall to wall (including corner parts),
Regarding expansion joints that connect walls and floors, walls and ceilings, floors and floors, ceilings and ceilings, etc., please refer to expansion joints that can cope with fluctuations caused by earthquakes, ground subsidence, expansion and contraction of buildings, etc. This is related to joint improvement.

Conventionally, a cover member that closes the gap between the two building frames is attached by a spring member that is approximately W-shaped between the pair of fixed members that are arranged on the building frames of both adjacent buildings. Expansion joints are known.

By the way, in the above-mentioned type of expansion joint, when the substantially W-shaped spring member elastically deforms and expands and contracts, especially when the spring member contracts, the top of the spring member moves outward. It tends to move relatively largely, and as the top moves outward, the cover member also moves outward together with the base member. For this reason, the cover member is lifted up from the fixed member side, causing problems in watertightness, airtightness, etc.

In view of the above-mentioned reasons, an object of the present invention is to provide an expansion joint that can prevent a cover member from lifting up from the fixed member side and can improve watertightness, airtightness, etc. It is to be.

An embodiment of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 3,
Frame 4 (roof and roof) of both adjacent buildings K1, K
An expansion joint 1 connecting 2 is shown. In this joint 1, long and symmetrical fixing members 2 and 3 are fixed to the body surfaces of both bodies K1 and K2 by screws 4 and 5, respectively. Note that the angle member 6 of the fixing member 3 is attached to the body surface of the body K2 on one side (the right side in FIG. 1).
is fixed, and a caulking material 7 is filled between the outside (right side) edge of the angle member 6 and the fixing member 3 and the body surface.

Support parts 2a and 3a, each having a hollow box-shaped cross section, are formed on opposing sides of both fixing members 2 and 3, and a stopper made of synthetic resin, rubber, etc. is formed on the lower opposing surfaces of these support parts 2a and 3a. Fitting portions 2b and 3b are formed into which both ends of the water plate 8 are fitted. Further, one end of the upper plate parts 2c, 3c of the support parts 2a, 3a has locking parts 2d, 3d at the lower part for locking one end of the holders 11, 12 for the draining members 9, 10, and springs to be described later. A protruding spring locking portion 1 that locks the member 22
3 and 14 are arranged. These spring locking parts 1
The tips 13a, 14a of the locking portions 13, 14 are formed in a mountain shape, arc shape, etc. in cross section, and at least one side of both side surfaces of the locking portions 13, 14 is provided with locking surfaces 13b, 14b having a sawtooth cross section. is formed. Furthermore, the cutting edge of the locking surfaces 13b, 14b is formed with a large protrusion of the saw blade surface, so that the retaining portions 13c, 14c are formed with a large protrusion.
This actively prevents the spring member 22 from coming off.

A locking edge 2 for locking holders 11 and 12 for draining members 9 and 10 is provided at the other end of the upper plate portions 2c and 3c of the support portions 2a and 3a of both fixed members 2 and 3.
e, 3e are formed, and these locking edges 2e, 3e are formed.
Locking protrusions 2f and 3f for locking the upper edge 15a of the water cutter cap 15 are formed on the lower surface of the drain cap 15.
Note that the draining cap 15 is provided as necessary, and in this embodiment, it is provided only for one frame K1, and the draining member 1 is provided on the frame surface of the frame K1.
5 short holders 16 are arranged at predetermined intervals. Further, the holder 16 includes three members 16a, 1
Although the length can be changed by 6b and 16c, it may be formed by one member.

A predetermined number of short holders 1 are provided on the upper plate portions 2c and 3c of the support portions 2a and 3a of both the fixing members 2 and 3.
1 and 12, long drainage members 9 and 10 each having an L-shaped cross section are disposed. Note that the holder 11,
12 is L-shaped along the back side of the draining members 9, 10, and at predetermined positions of these holders 11, 12,
Engagement pieces 11a and 12a that engage with the engagement portions 2d and 3d of the fixing members 2 and 3, and engagement claws 11b and 12b that engage with the engagement edges 2e and 3e of the fixation members 2 and 3; Presser piece 11 that comes into contact with the upper surface of edges 2e and 3e
c and 12c are formed, respectively. Furthermore, engagement edges 9a and 10a that engage with the holders 11 and 12 are formed at both end edges of the draining members 9 and 10.

A long cover member 17 that closes the gap S between the two main bodies K1 and K2 is connected to the drainage members 9 and 1 of both the fixing members 2 and 3 by means of a substrate member 21 and a spring member 22, which will be described later.
This cover member 1 is attached so that it can be moved (tilted, slid, etc.) along the top surface of the
Projecting edges 17a and 17b are formed at both ends of the lower surface of 7, and a locking surface 17 having a sawtooth cross section for securing the substrate member 21 is formed on the opposing surface of these projecting edges 17a and 17b.
c, 17d, and the locking surfaces 17c, 1
At the lower end of 7d, retaining portions 17e and 17f are provided to protrude. Furthermore, dovetail grooves 17g, 17g are formed in the lower surfaces of the projecting edges 17a, 17b, into which gaskets 19, 20 are fitted in close contact with the upper surfaces of the drainage members 9, 10 to maintain watertightness and airtightness.

The substrate member 21, which is disposed on the back side of the cover member 17 and to which the cover member 17 is attached, is formed of a flexible flat strip-like member, and the locking surfaces 17c and 17d of the cover member 17 are provided at both ends thereof. Locking pawls 21a and 21b that are elastically locked are formed in a downwardly inclined shape. A protruding spring locking portion 1 for locking the spring member 22 is located approximately at the center of the lower surface of the substrate member 21.
8 is provided in a protruding manner, and a retaining portion 18a having a mountain-shaped cross section, an arc shape, or the like is formed at the tip of this spring locking portion 18.

It is disposed on the back side of the substrate member 21, and the cover member 17 is fixed together with the substrate member 21 by both fixing members 2,
The spring member 22 movably held along the upper surfaces of the draining members 9 and 10 of No. 3 has a substantially W-shape so that it can elastically expand and contract in response to vertical, horizontal, front-back, etc. fluctuations of both the main bodies K1 and K2. It is formed. A locking portion 23 that locks with the spring locking portion 18 of the base plate member 21 is formed above the top portion 22c of the spring member 22.
At the tips of both leg pieces 22d and 22e of the spring member 22, locking portions 24 and 25 are formed to lock with the spring locking portions 13 and 14 of both fixing members 2 and 3, respectively. Further, the spring member 22 has a spring force that urges the cover member 17 toward the fixing members 2 and 3 together with the base plate member 21, and when the spring member 22 is deformed, the top portion 22c of the spring member 22 is moved in the inner and outer directions (vertical direction). In order to set the amount of movement small, the radius of curvature R of the top portion 22c of the spring member 22 is formed to be as large as possible. In this embodiment, the spring member 22 is comprised of two substantially V-shaped spring plates 22a and 22 that are left-right symmetrical, as shown in FIGS.
b, and these spring plates 22a,
The upper portions of the opposing inner plates 22b are fixed 26 in the shape of palms together by rivets, screws, spot welding, etc. to form an integral body. A locking portion 23 that locks with the spring locking portion 18 of the base plate member 21 is formed at the upper end of the joint between both spring plates 22a and 22b, and has an upper opening. A locking pawl 23a is formed on both sides of the base plate member 21 to be elastically engaged with a retaining portion 18a at the tip of the spring locking portion 18 of the base plate member 21. A top portion 22c is formed at the lower end of the joint between both spring plates 22a and 22b via rounded surfaces 22h and 22i,
Both valley portions 22f are continuous to the lower end of this top portion 22c,
Both valleys 22 continuous to the tip of the folded part of 22g
Leg pieces 22d, 22 are attached to the tip of the folded part of f, 22g.
e is extended. These leg pieces 22d, 22e
The spring locking portions 13 of both fixing members 2 and 3 are at the tips of the
Locking portions 24 and 25 that lock with the fixing members 2 and 3 are formed in a substantially inverted U shape, and the lower openings of these locking portions 24 and 25 are provided with the spring locking portions 1 of both fixing members 2 and 3.
Locking claws 24a, 25a are formed to elastically engage the locking surfaces 33b, 14b or the flat side surfaces of 3 and 14.

In the above spring member 22, as shown in FIG.
The height to the upper surface of the locking parts 24 and 25 at the tips of 2d and 22e in the free state is H1, and the spring locking part 18 of the base plate member 21 and the locking part 23 of the spring member 22 are locked. When the height at that time is H2, the relationship is set so that H1>H2. Thereby, a spring force is applied to the spring member 22 to draw the cover member 17 together with the base plate member 21 toward both the fixing members 2 and 3.
Furthermore, the distance between the locking parts 24 and 25 at the ends of both leg pieces 22d and 22e of the spring member 22 is set as L1 in the free state as shown in FIG. The distance between 13 and 14 is L
2, and the distance when the spring locking part 18 of the board member 21 and the locking part 23 of the spring member 22 are locked is L.
3, L1<L2<L3 (L1+α=L2+β
= L3). That is, after the spring locking portion 18 of the substrate member 21 and the locking portion 23 of the spring member 22 are locked, the spring member 22 is connected to the spring locking portions 13 and 14 of both the fixing members 2 and 3.
By pressing toward
Due to this guiding action, the locking portions 24 and 25 at the tips of both leg pieces 22d and 22e engage the spring locking portions 1 of both fixing members 2 and 3.
3 and 14 are securely engaged. In this state, the spring force that urges the cover member 17 together with the base plate member 21 toward both fixing members 2 and 3 is further generated in the spring member 22, and the gaskets 19 and 20 at both ends of the cover member 17 are pressed against both fixing members 2 and 3. , 3 draining member 9,
10 with a predetermined pressure.

When the spring member 22 elastically deforms and expands and contracts, the top 22c is curved in a curved shape with a radius of curvature R as large as possible in order to set a small amount of movement of the top 22c in the internal and external directions (vertical direction). It is formed.

In addition, in this embodiment, both valley portions 22f and 22g of the spring member 22 are straight portions of a predetermined length at the lower end of the top portion 22c (this straight portion may be omitted).
It is formed into a circular arc shape that is continuous through the ridge and has a radius of curvature smaller than the radius of curvature R of the top portion 22c by a predetermined amount.
Further, bent portions 22j and 22k where stress is concentrated are formed between the ends of the folded portions of both valley portions 22f and 22g and the lower ends of both leg pieces 22d and 22e.

Furthermore, in order to reduce the deformation load on the top 22c of the spring member 22, the width of the top 22c is made smaller than that of other parts.
A large number of through holes may be formed at predetermined positions of the top portion 22c to reduce the deformation load of the top portion 22c.

Note that both the fixing members 2, 3 and the holders 11, 1
2. For each member such as the draining members 9 and 10, the cover member 17, and the substrate portion 21, extrusion molded materials such as aluminum alloy may be used. Also, in Figure 1, 3
Reference numeral 6 denotes a sealing member made of polystyrene foam, sponge rubber, etc., which is inserted into the gap S between the two main bodies K1 and K2 as necessary.

In the expansion joint 1 configured as described above, both the main bodies K1 and K2 are upper and lower,
When it moves from side to side, front to back, etc., the substrate member 21 and the spring member 22 elastically deform in response to this movement, while the cover member 17, while being held by the substrate member 21 and the spring member 22, ，
3, the cover member 1 moves (moves by tilting, sliding, etc.) along the upper surface of the draining members 9 and 10.
Deformation, damage, etc. of 7 are well prevented. Also, when the spring member 22 is deformed, this spring member 22
Since the amount of movement of the top portion 22c in the inward and outward directions is small, it is possible to prevent the end portion of the cover member 17 from lifting up from the upper surface of the draining members 9, 10 of both the fixing members 2, 3, The gap S between K2 can always be kept well sealed by the cover member 17.

Next, in a second embodiment shown in FIG. 4, an expansion joint 1 is shown that connects both the building blocks (roof and wall) K1 and K2. In this joint 1, the fixing member, holder 11, and drainage member 9 attached to the body surface of one body (roof) K1 are substantially the same as those of the first embodiment.

The fixing member 3 fixed to the frame surface of the other frame K2 by screws 5 has a support portion 3a extending toward the one fixing member 2 at its lower end, and has a substantially L-shaped cross section. A fitting part 3b for the water stop plate 8 is formed on the distal end surface of the support part 3a.
A spring locking portion 14 is formed on the top surface of the tip. A holding portion 3g is formed on the upper end surface of the fixing member 3 to which the auxiliary cover 27 is fixed via a clip 28 or the like.

A cover member 17 that closes the gap S between the two main bodies K1 and K2 is movably mounted between the two fixing members 2 and 3 by a base member 21 and a spring member 22 that are substantially similar to those in the first embodiment. . This cover member 17
is formed into a substantially L-shaped cross section, and has projecting edges 17a and 17b formed at both ends thereof, and these projecting edges 17
A gasket 19, which is in close contact with the top surface of the draining member 9 or the back surface of the auxiliary cover 27,
Dovetail grooves 17g and 17h into which 20 is fitted are recessed. Furthermore, a board locking edge 17j is provided on the back side of the L-shaped corner of the cover member 17 in parallel with one of the projecting edges 17a.
7j are formed with locking surfaces 17c and 17d having a sawtooth cross section for locking the board member 21, and retaining portions 17e and 17f protrude from the lower ends of these locking surfaces 17c and 17d. It is set up.

A locking portion 27a is formed on the lower surface of the proximal end of the auxiliary cover 27, and is secured to the holding portion 3g of the fixing member 3 via a clip 28 or the like.
A fitting portion 27b for a gasket 29 that comes into close contact with the cover member 17 is formed at the tip of 7.

The expansion joint 1 of the second embodiment constructed as described above operates in substantially the same manner as the first embodiment.

Next, in a third embodiment shown in FIG. 5, an expansion joint 1 is shown that connects the frames (floors) K1 and K2 of both buildings. In this joint 1, both fixing members 2,
3 is fixed as shown in the figure. Fitting portions 2c, 3c for the water stop plate 8 are formed at opposing ends of both of these fixing members 2, 3, and fitting portions 2c,
Engagement edges 2h, 3h that engage with the tips of the attachment members 30, 31 are formed on the back side of the fitting portion 2c.
Spring locking portions 13 and 14 are formed on the upper surfaces of the fixing members 2 and 3, while fitting portions 2i and 3i for gaskets 32 and 33 are formed on the upper surfaces of the other ends of both fixing members 2 and 3. .

A cover member 17 that closes the gap S between the two main bodies K1 and K2 is movably mounted over the upper surfaces of both the fixing members 2 and 3 by means of a substrate member 21 and a spring member 22 that are substantially the same as in the first embodiment. ing. At both ends of the lower surface of this cover member 17, there are retaining grooves 32a and 33a recessed in the upper surfaces of opposite ends of the gaskets 32 and 33.
Projecting edges 17a and 17b are formed to fit with the cover member 17, and right and left board locking edges 17i and 17j for locking the board member 21 are protruded at predetermined positions on the lower surface of the cover member 17. And both board locking edges 17i, 17j
Both locking claws 21a, 2 of the board member 21 are on the opposing surface of the board member 21.
1b are formed, and these locking surfaces 17c, 17
Stopper portions 17e and 17f are provided protrudingly from the lower end of d. Note that without providing the board locking edges 17i, 17j, locking surfaces 17c, 17d and retaining portions 17e,
17f may be formed. Also, gasket 3
2 and 33 are made of synthetic resin, rubber, etc., and are formed into a hollow bellows shape so that they can be expanded and contracted.

The expansion joint 1 of the third embodiment configured as described above operates almost the same as the first embodiment, and when the cover member 17 moves along the upper surfaces of both the fixing members 2 and 3, , gaskets 32 and 33 expand and contract following this movement.

Next, in a fourth embodiment shown in FIG. 6, an expansion joint 1 is shown that connects the frames (floors and walls) K1 and K2 of both buildings. In this joint 1, the mounting member 30 and the fixing member 2 disposed on the body surface of one body K1 are the third
It is almost the same as that of the embodiment.

On the surface of the fixing member 3 fixed to the frame surface of the other frame K2 by screws 5, there are a holding part 3g for holding the auxiliary cover 27 via a clip 28, etc., and a fitting part 3i for the gasket 33. are formed at the top and bottom. Further, at the lower end of the fixing member 3, a support part 3a having a hollow box-shaped cross section or the like is formed that projects toward one of the fixing members 2, and a water stop part 8 is fitted at the lower end of the support part 3a. A fitting portion 3b and a spring locking portion 14 are formed as shown in the figure. In addition,
A regulating protrusion 3K for regulating excessive movement of the cover member 17 and preventing the cover member 17 from coming off is formed at the top end of the support portion 3a.

A cover member 17 that closes the gap S between both bodies K1 and K2, and this cover member 17 is attached to both fixing members 2 and 3.
A substrate member 21 that is movably held along the upper surface of the
The spring member 22 and the spring member 22 are substantially the same as those in the third embodiment.

The expansion joint 1 of the fourth embodiment constructed as described above operates in substantially the same manner as the third embodiment.

Next, in the fifth embodiment shown in FIG. 7, the frames of both buildings (wall to wall or ceiling to ceiling) K1, K
An expansion joint 1 connecting 2 is shown. In this joint 1, both left-right symmetrical fixing members 2, 3 are fixed to the body surfaces of both bodies K1, K2 by attachment members 30, 31. That is, in this embodiment, the holding grooves 30a, 31a and the protrusions are engaged with each other through the clips 28, etc., between both ends of the surfaces of the mounting members 30, 31 and the back surfaces of the fixing members 2, 3 opposing thereto. 2
j, 3j are formed.

Water stop plates 8 are provided at opposite ends of both fixing members 2 and 3.
Fitting portions 2b, 3b and spring locking portions 13, 14 are formed as shown in the figure. In addition, the frame K
If 1, K2 is an inner wall or a ceiling, the water stop plate 8 does not necessarily need to be provided, so the fitting portions 2b, 3b may not be provided.

Cover member 1 that closes the gap between both skeletons K1 and K2
7 and the base member 21 and spring member 22 that hold the cover member 17 movably along the surfaces of both the fixing members 2 and 3 are substantially the same as those in the first embodiment.

The expansion joint 1 of the fifth embodiment constructed as described above operates almost the same as that of the first embodiment.

Next, in a sixth embodiment shown in FIG. 8, an expansion joint 1 is shown that connects the building frames (wall-to-wall or ceiling-to-wall at the corner) of both buildings K1 and K2. At this joint 1, a mounting member 30 disposed on one of the skeletons K1
And the fixing member 2 is almost the same as in the fifth embodiment.

A support portion 3a that extends toward one of the fixing members 2 is formed at the lower end of the fixing member 3 that is fixed to the frame surface of the other frame K2 via the attachment member 31, and a stopper is provided at the tip of the support portion 3a. A fitting part 3b for the water plate 8 and a spring locking part 14 are formed as shown in the figure. Note that the fitting portion 3b is provided as necessary in the same manner as in the fifth embodiment. Further, a regulating protrusion 3k is formed on the front end of the surface of the support portion 3a to regulate excessive movement of the cover member 17 and prevent the cover member 17 from coming off due to excessive movement.

The cover member 17 that closes the gap S between the two main bodies K1 and K2, the base plate member 21 and the spring member 22 that hold the cover member 17 movably along the surfaces of both the fixing members 2 and 3 are the same as those of the first embodiment. Almost the same.

The expansion joint 1 of the sixth embodiment constructed as described above operates almost the same as that of the first embodiment.

In each of the above embodiments, the spring member 22 is mainly composed of two spring plates 22a and 22b, but is not limited to this.
As shown in the figure, the spring member 22 having a substantially W-shape may be constructed mainly from one spring plate. However, the locking portion 23 that locks with the spring locking portion 18 of the board member 21 is the top portion 22c of the spring member 22.
It can also be formed by cutting out a part of the
It can also be formed from separate members.

Further, the spring locking portion 18 of the substrate member 21 is formed in a groove shape, and the locking portion 2 of the top portion 22c of the spring member 22 is formed in a groove shape.
3 may be formed into a protrusion.

Further, as shown in FIG. 10, both fixing members 2,
The spring locking portions 13 and 14 of No. 3 are formed to have a substantially hook-shaped cross section, and the locking portions 24 and 25 at the ends of both leg pieces 22d and 22e of the spring member 22 are connected to the spring locking portions 13 and 14, respectively.
14 may be formed into a hook shape, a piece shape, etc.

Further, the fixing members 2 and 3 disposed on the body surfaces of both the bodies K1 and K2 may be fixed by screws or other fixing means such as attachment members.

Furthermore, as shown in FIG.
Fix c by spot welding, screws, rivets, etc. 37
You may.

However, even in this case, as shown in FIG.
The height to the top surface of 4 and 25 is determined by the relationship H1>H2, where H1 is the height in the free state and H2 is the height when the spring member 22 is fixed 37 to the back surface of the substrate member 21. It is set so that Furthermore, both leg pieces 22d, 2 of the spring member 22
The distance between the locking parts 24 and 25 at the tip of 2e is the 11th
As shown in the figure, the distance in the free state is L1, the distance between the spring locking parts 13 and 14 of both fixing members 2 and 3 is L2, and the distance when the spring member 22 is fixed 37 to the back surface of the board member 21 is When L3 is set, the relationship is set such that L1<L2<L3 (L1+α=L2+β=L3).

Furthermore, in the first embodiment, the draining members 9 and 10 are attached to both the fixing members 2 and 3 via the holders 11 and 12, and the cover member 17 is attached to the spring member by straddling the upper surfaces of both the draining members 9 and 10. 22, but the present invention is not limited thereto. For example, as shown in FIG. 12, a drain cap 38,
39 may be attached, and the cover member 17 may be movably mounted by the base plate member 21 and the spring member 22 so as to straddle the upper surfaces of these draining caps 38 and 39.

In addition, in the second embodiment and the fourth embodiment, the auxiliary cover 27 was attached to the other fixed member 3;
The auxiliary cover 27 does not necessarily need to be provided; for example, as shown in FIG. It may be engaged with the back side of the engagement edge 3m formed in the.

As mentioned above, the first invention of this invention is
Both fixing members arranged on the frames of both adjacent buildings to form a pair, and a cover member installed between these two fixing members to close the gap between the two frames, and on the back side of the cover member. A base member to which the cover member is attached is provided, and a substantially W-shaped spring member that can be elastically expanded and contracted is attached to the top of the back side of this base member, and the above-mentioned spring member is attached to the tip of both legs of this spring member. This is an expansion joint formed with a locking portion that is attached to the spring attachment portions of both fixing members, and the height from the trough of the spring member to the locking portion in the free state is H1. year,
The expansion joint is set so that H1>H2, where H2 is the height when the spring member is attached to the back surface of the substrate member.

Therefore, even when there are large fluctuations in both the building blocks due to an earthquake or the like, both the substrate member and the spring member can elastically deform and hold the cover member, thereby preventing deformation such as twisting of the cover member. and damage can be effectively prevented. In addition, the cover member can be easily attached by attaching the cover member to the board member, and since no fastening members such as screws are required, it is possible to prevent rain and improve the appearance. can.

In particular, the height from the trough of the spring member to the locking part is when H1 is the height in the free state and H2 is the height when the spring member is attached to the back surface of the board member. The relationship is set so that H1>H2.

Therefore, a spring force that draws the cover member toward the fixing member can be applied to the spring member. As a result, it is possible to actively prevent the cover member from lifting up relative to both fixing members, and to improve watertightness, airtightness, etc.

A second invention of the present invention includes two fixed members disposed on the frames of two adjacent buildings to form a pair, and a cover member installed between these two fixed members to close the gap between the two frames. A substrate member for attaching the cover member is disposed on the back side of the cover member,
A substantially W-shaped spring member that can be elastically expanded and contracted is attached to the back side of this base plate member at its top, and locking parts that are attached to the spring attachment parts of both fixing members are attached to the tips of both legs of this spring member. In the formed expansion joint, the height from the trough of the spring member to the locking part in the free state is H1, and the spring member is attached to the back surface of the substrate member. When the height at that time is H2, there is a relationship H1>H2, and the distance between the locking parts at the tips of both legs of the spring member in the free state is L1, and the spring is attached to the back side of the base member. When the distance when the member is attached is L3, and the distance between the spring attachment parts of both fixing members is L2, L1
This is an expansion joint that is set to have the relationship <L2<L3.

Therefore, according to the second invention, it has the configuration, operation and effect of the first invention described above, and the distance between the locking parts at the tips of both legs of the spring member is equal to the distance in the free state L1. The distance when the spring member is attached to the back side of the board member is L3, and the distance between the spring attachment parts of both fixing members is L2, and the relationship is set so that L1<L2<L3. Therefore, after fixing the board member and spring member to the back surface of the cover member, by pressing the spring member together with the cover member and the board member toward the mounting portions of both fixing members, both leg pieces of the spring member can be fixed. By sliding along the mounting portions with a guiding action, the locking portions at the ends of both legs can be engaged with both mounting portions, thereby further improving the ease of attaching the cover member to both fixing members. It also has the effect of being able to achieve this goal.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a sectional view showing the expansion joint of the first embodiment, Figure 2 is a perspective view showing the spring member, and Figure 3 is the spring locking part of the base plate member, each locking part of the spring member, and the fixing member. 4 is a sectional view showing the expansion joint of the second embodiment, and FIG. 5 is a sectional view showing the expansion joint of the third embodiment. , FIG. 6 is a sectional view showing the expansion joint of the fourth embodiment, FIG. 7 is a sectional view showing the expansion joint of the fifth embodiment, and FIG. 8 is a sectional view of the expansion joint of the sixth embodiment. 9 is a sectional view showing the spring member; FIG. 9 is a side view showing another embodiment of the spring member;
Figure 0 is a side view showing another embodiment of the spring locking portion of the fixed member and the locking portions at the tips of both legs of the spring member;
Fig. 1 is a side view showing an embodiment in which the substrate member and the spring member are integrated, Fig. 12 is a sectional view showing a modification of the first embodiment, and Fig. 13 is a second and fourth embodiment. It is a sectional view showing a modification example of. 1... Expansion joint, 2, 3...
...Fixing member, 13, 14... Spring locking part, 17...
...Cover member, 18... Spring locking part, 21... Board member, 22... Spring member, 22c... Top part, 2
2d, 22e...leg piece, 23...locking part, 24,
25...Locking part.

Claims (1)

[Scope of Claims] 1. A building comprising two fixed members disposed on the frames of two adjacent buildings to form a pair, and a cover member installed between these two fixed members to close the gap between the two frames, A substrate member to which the cover member is attached is disposed on the back side of the cover member, and a substantially W-shaped spring member that is elastically expanded and contracted is attached to the back side of the substrate member at its top, and both legs of this spring member are attached to the back side of the base member. It is an expansion joint in which a locking portion is formed at the tip of the piece to be attached to the spring mounting portions of both of the fixing members, and the height from the trough of the spring member to the locking portion is: It is characterized in that the height in a free state is H1, and the height when the spring member is attached to the back surface of the substrate member is H2, and the relationship is set such that H1>H2. expansion joint. 2. Both fixing members arranged on the frames of both adjacent buildings to form a pair, and a cover member installed between these two fixing members to close the gap between the two frames, the back side of the cover member is provided with a base plate member to which the cover member is attached, and on the back side of this base plate member, a substantially W-shaped spring member that can be elastically expanded and contracted is attached at the top thereof, and at the tips of both legs of this spring member. The expansion joint is formed with a locking portion that is attached to the spring mounting portions of both of the fixing members, and the height from the trough of the spring member to the locking portion is equal to the height in the free state. When H1 is the height when the spring member is attached to the back surface of the base plate member, the relationship H1>H2 is satisfied, and the distance between the locking parts at the tips of both legs of the spring member is: The distance in the free state is L1, and the distance when the spring member is attached to the back side of the board member is L3.
An expansion joint characterized in that, where L2 is the distance between the spring mounting portions of both fixing members, the relationship is L1<L2<L3.