JPH0315681Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to an expansion joint that connects the roofs, walls, ceilings, floors, etc. of two adjacent buildings, mainly external walls. Both fixing members are provided, and side edges are disposed astride between these fixing members and are in close contact with the outer wall surfaces of the frames of both of the building blocks at both ends to seal the space between the building blocks. The main components are a cover member and a spring member disposed between the fixing members and the cover member to hold the cover member movably relative to the fixing members, and
This invention relates to improvements to expansion joints that can cope with fluctuations caused by ground subsidence, building expansion, contraction, etc.

Conventionally, in this type of expansion joint, when the air pressure around the outside of the expansion joint becomes higher than the air pressure in the interior space of the joint due to wind pressure during wind and rain, both side edges of the cover member close together. Even though the cover member is in close contact with the outer wall surface of the frame, rainwater or the like may enter the space between the outer wall surface of the frame and the back surface of the cover member. There was also a problem that rainwater, etc. that had entered this space flowed into the gap between the two frames.

The purpose of this invention is to solve the above-mentioned problems, and improve watertightness by dividing the space between the outer wall surface of the building blocks and the back side of the cover member from the gap between the two building blocks. It is an object of the present invention to provide an expansion joint in which a cover member can be easily attached by a spring member while straddling both fixing members.

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

In the expansion joint 1 of the first embodiment shown in FIGS. 1 to 3, the outer wall surfaces K1a,
Both long and symmetrical fixing members 2 and 3 are fixed to K2a with screws 4 and 5, etc.
On the surface side of both the fixing members 2 and 3, a cover member 6 that spans between the fixing members 2 and 3 and seals the gap S between both the skeletons K1 and K2 is provided by a spring member 7 that can be elastically expanded and contracted. It is attached so that it can be moved (tilting, sliding, etc.).

On the surfaces of both fixing members 2 and 3, both main bodies K1 and K
Partition walls 8 and 9 that partition the spaces A and B between the outer wall surfaces K1a and K2a of the two frame bodies and the back surface of the cover member 6 from the gap S between the two frame bodies K1 and K2 face the back surface of the cover member 6. It is formed by Fitting portions 8a, 9a having dovetail grooves into which gaskets 10, 11 that are in close contact with the back surface of the cover member 6 are fitted are formed at the tips of the partition walls 8, 9. Both fixing members 2 and 3 located inside the partition walls 8 and 9
A protruding spring locking portion 1 is provided at one end opposite to the
2 and 13 are formed. These spring locking parts 1
2 and 13, as shown in FIG.
a, 13a are formed in a cross-section of a chevron-shaped arc, etc., and locking surfaces 12b, 13b having a sawtooth cross-section are formed on at least one of both side surfaces of the locking portions 12, 13. Furthermore, the locking surfaces 12b, 13b
The leading edge of the saw blade surface is formed to have a large protruding amount and serves as a retaining portion 12c, 13c, which actively prevents the spring member 7 from coming off. Further, fitting portions 2a, 3a for fitting both ends of a waterstop plate 14 made of synthetic resin, rubber, etc. are provided at the base end portions of the spring locking portions 12, 13 of both fixing members 2, 3. It is formed. In this embodiment, watertight receiving edges 2b, 3b are formed at the other ends of both fixing members 2, 3, and there are gaps between these watertight receiving edges 2b, 3b and the outer wall surfaces K1a, K2a of the frame. Watertight materials 18 and 19 such as caulking material and sealing material are filled.

The cover member 6 that seals the gap S between the two main bodies K1 and K2 extends left and right to a position where its left and right ends exceed the other ends of both the fixing members 2 and 3 by a predetermined amount, and this cover member Side edges 6a and 6b are formed at both left and right end portions of the frame member 6 toward the outer wall surfaces K1a and K2a of both the frame bodies K1 and K2. At the tips of these side edges 6a, 6b, there are gaskets 1 that are in close contact with the outer wall surfaces K1a, K2a of both the skeletons K1, K2.
Fitting portions 6c and 6d for fitting the parts 5 and 16 are formed. Note that the illustrated upper wall surfaces of the fitting portions 6c and 6d extend in the longitudinal direction of the cover member 6.
Locking portions 6e and 6f that lock both ends of a joint 17 having drainage properties for connecting a cover member different from the
It is said that

A protruding spring locking portion 20 is formed approximately at the center of the back surface of the cover member 6, and this spring locking portion 2
At the tip of 0, there is a retaining part 2 with a triangular cross section, arc shape, etc.
0a is formed.

A spring member 7 that straddles both fixing members 2 and 3 to movably hold the cover member 6 is attached to both the main bodies K1 and K.
It is formed into a substantially W-shape so that it can be elastically expanded and contracted in response to changes in the front and back, left and right, up and down directions of 2. A locking portion 21 that locks with the spring locking portion 20 of the cover member 6 is formed above the top portion 7c of the spring member 7, and both fixing members 2, Locking portions 22 and 23 are formed to lock with the spring locking portions 12 and 13 of No. 3, respectively. Further, the spring member 7 has a spring force that urges the cover member 6 toward the fixing members 2 and 3, and
When the spring member 7 is deformed, its top 7c
The radius of curvature R of the top portion 7c of the spring member 7 is formed to be as large as possible in order to set the amount of movement in the inward and outward directions (vertical direction in the figure) to be small. In this embodiment, as shown in FIGS. 2 and 3, the spring member 7 is mainly composed of two left-right symmetrical substantially V-shaped spring plates 22a, 22b. The upper parts of the opposing inner plates of 7b are fixed in a joined shape by rivets, screws, spot welding, etc. 24
formed into a single body. And both spring plates 7a, 7
The spring locking part 2 of the cover member 6 is located at the upper end of the joint part b.
A locking portion 21 that locks with the spring locking portion 20 of the cover member 6 is formed in a substantially U-shape.
A locking pawl 21a is formed that elastically engages with a. A top portion 7c is formed at the lower end of the joint between both spring plates 7a and 7b via rounded surfaces 7h and 7i, and leg pieces 7d and 7e are formed at the ends of the folded portions of both valley portions 7f and 7g that are continuous with the lower ends of this top portion 7c. has been extended. At the tips of these leg pieces 7d and 7e, locking parts 22 and 23 that lock with the spring locking parts 12 and 13 of both fixing members 2 and 3 are formed in a substantially inverted U shape, and these locking parts The locking surfaces 12 of the spring locking portions 12, 13 of both fixing members 2, 3 are provided at the lower openings of the fixing members 2, 3.
Locking pawls 22a, 23a are formed to elastically engage with b, 13b or the flat side surface.

In the above spring member 7, the height from the locking part 21 above the top 7c to the locking parts 22 and 23 at the ends of both leg pieces 7d and 7e is as shown in FIG.
The height in the free state is H1, and the cover member 6
When the height when the spring locking part 20 and the locking part 21 of the spring member 7 are locked is H2, H1>
The relationship is set to be H2 (H1=H2+h). Furthermore, both leg pieces 7d and 7e of the spring member 7
As shown in FIG. 3, the distance between the locking parts 22 and 23 at the tip is L1 in the free state, and L2 is the distance between the spring locking parts 12 and 13 of both fixed members 2 and 3. The distance when the spring locking part 20 of the cover member 6 and the locking part 21 of the spring member 7 are locked is
When L3 is set, L1<L2<L3 (L1+α=L2+β
= L3). That is, after the spring locking portion 20 of the cover member 6 and the locking portion 21 of the spring member 7 are locked together, the spring member 7 is attached to the spring locking portions 12 and 13 of both the fixing members 2 and 3 together with the cover member 6. By pressing toward the spring member 7, the outer surfaces of the leg pieces 7d, 7e slide along the tips 12a, 13a of the spring locking parts 12, 13, and this guiding action causes the leg pieces 7d, 7e to slide. The locking portions 22 and 23 at the tips of 7e are securely engaged with the spring locking portions 12 and 13 of both fixing members 2 and 3. In this state, the cover member 6 is attached to both the fixing members 2 and 3.
A spring force is generated in the spring member 7 to urge the gaskets 15 and 16 at both ends of the cover member 6 towards the body K.
1, K2 are brought into pressure contact with the outer wall surfaces K1a and K2a of the building frame at a predetermined pressure. Furthermore, when the spring member 7 is elastically deformed and expands and contracts, in order to set a small amount of movement of the top portion 7c in the inward and outward directions (vertical direction),
The radius of curvature R of the top portion 7c is made as large as possible. Moreover, in order to further reduce the amount of movement of the top portion 7c in the inward and outward directions, both valley portions 7 of the spring member 7 are
f, 7g are continuous to the lower end of the top portion 7c via a straight line portion of a predetermined length (this straight portion may be omitted) and are formed with a radius of curvature smaller than the top portion 7c by a predetermined amount; Bent portions 7j and 7k where stress is concentrated are formed between the tips of the folded portions 7f and 7g and the lower ends of both leg pieces 7d and 7e.

Furthermore, in order to reduce the deformation load on the top 7c of the spring member 7, the width of the top 7c is smaller than that of other parts, and a large number of through holes are formed at predetermined positions in the top 7c. The deformation load on the top portion 7c may be reduced.

In addition, both the fixing members 2 and 3 and the cover member 6
Alternatively, a mold material formed by extrusion molding such as aluminum alloy may be used.

In the expansion joint 1 of the first embodiment configured as described above, both bodies K1,
When K2 fluctuates back and forth, left and right, up and down, etc.
In response to this variation, the spring member 7 elastically deforms and expands and contracts, while the cover member 6, while being held by the spring member 7, extends over the outer wall surface K1 of both the main bodies K1 and K2.
Since the cover member 6 moves (tilts, slides, etc.) along the a and K2a, deformation, damage, etc. of the cover member 6 is prevented. Furthermore, when the spring member 7 is deformed,
Since the amount of movement of the top portion 7c of the spring member 7 in the inward and outward directions is small, it is possible to prevent the end portion of the cover member 6 from lifting up with respect to the outer wall surfaces K1a, K2a of both the body bodies K1, K2. gap S between
can be kept well sealed by the cover member 6 at all times.

Now, the air pressure around the outside of the expansion joint 1 increases due to the wind pressure during wind and rain, and the internal space of the joint 1, that is, the outer wall surface K1 of the skeleton increases.
When the pressure difference between the spaces A and B between a and K2a and the back surface of the cover member 6 is large, rainwater or the like may enter the spaces A and B. However, this rainwater etc. can be removed from the partition wall 8 of both fixing members 2 and 3.
9 and drains downward.
For this reason, it is possible to prevent rainwater or the like that has entered into the spaces A and B from flowing into the gap S between the two main bodies K1 and K2. Further, in this embodiment, the cover member 6 is biased toward both the fixing members 2 and 3 by the spring member 7, and the gaskets 15 and 16 on both side walls 6a and 6b of the cover member 6 are pressed together. Since it is brought into contact with the outer wall surfaces K1a and K2a of the building frame at a predetermined pressure, when the pressure difference between the outer periphery of the expansion joint 1 and the insides of the spaces A and B is small, rainwater etc. will not leak into the spaces A and B. Infiltration can be prevented.

Next, in FIG. 4 showing the expansion joint 1 of the second embodiment that connects the frames K1 and K2 of both buildings (exterior wall and outer wall at the entrance corner), the outer wall surface K1a of one frame K1 is The fixing member 2 fixed by screws 4 and the like is almost the same as in the first embodiment.

Screw 5 is installed on the outer wall surface K2a of the other frame K2.
The fixing member 3 is fixed by the fixing member 3, etc., and a support portion 3c, such as a hollow box-shaped cross section, extending toward one of the fixing members 2 is formed at the lower end of the fixing member 3 in the drawing. A water stop plate 14 is provided on the distal end surface of this support portion 3c.
A fitting part 3a is formed for the support part 3c, and a spring locking part 13 is formed on the front end surface of the support part 3c. Furthermore, a cover member 6 is provided at the upper end of the fixing member 3 in the figure.
A latching edge 3d having a substantially hook-shaped cross section is formed toward the back side of the cover member 6, and this latching edge 3d is attached to the outer wall surface K of the other frame K2.
It also serves as a partition wall 9 that partitions the space B between the cover member 2a and the back surface of the cover member 6 from the gap S between the two main bodies K1 and K2.

The cover member 6 that seals the gap S between the two main bodies K1 and K2 is formed into a substantially L-shaped cross section, and the ends of both sides of the cover member 6 are connected to both the fixing members 2,
3 by a predetermined amount
a, K2a and extend parallel to each other,
At both ends thereof, there are side edges 6a facing the outer wall surface of the frame.
6b is formed. Fitting portions 6 for fitting gaskets 15, 16 that are in close contact with the outer wall surfaces K1a, K2a of the body at the tips of these side edges 6a, 6b.
c, 6d are formed. In addition, the cover member 6
A spring locking part 20 is formed on the rear surface of the approximately central part of one side (horizontal side), and a cross section that engages with the locking edge 3d of the other fixing member 3 is formed on the rear surface of the upper part of the other side (vertical side). A hook-shaped locking edge 6g is formed. A packing 25 is filled between the two retaining edges 3d and 6g. In addition, the above locking edge 6g
also serves as a locking portion 6f that locks one side of a joint 17 having drainage properties for connecting a cover member other than the cover member 6 in the longitudinal direction of the cover member 6.

The spring member 7 that straddles both the fixing members 2 and 3 to movably hold the cover member 6 is substantially the same as that in the first embodiment.

The expansion joint 1 of the second embodiment configured as described above operates almost in the same way as the first embodiment.

In addition, the outer wall surfaces K1a and K of the frames K1 and K2
2a, in each of the above embodiments, the fixing member 2,
Although the case in which the mounting surface of No. 3 and the surfaces of the side edges 6a, 6b of the cover member 6 where the gaskets 15, 16 are in close contact with each other is on the same plane is illustrated, the present invention is not limited thereto; for example, as shown in FIG. As such, the fixing member 2,
The gaskets 1 on the side edges 6a, 6b of the cover member 6 are
The surface where 5 and 16 are in close contact may be raised by exterior materials (mortar, decorative board, etc.) K1a' and K2a'.

Furthermore, the fixing members 2 and 3 for the skeletons K1 and K2 are
Installation is not limited to screws 4 (5), but also anchors,
It may be fixed by a fixing means such as a fixture.

Further, as shown in FIGS. 6 and 7, spring locking portions 12, 13) having a substantially hook-shaped cross section are formed on the inner surfaces of the partition walls 8, 9 of the fixing members 2, 3, and a hook shape that locks the locking parts 22, 23 at the tips of the leg pieces 7d, 7e with the spring locking parts 12, 13;
It may be formed into a rectangular shape or the like.

Furthermore, as shown in FIG.
The front end surfaces of the partition walls 8 and 9 may be placed directly against the back surface of the cover member 6, and as shown in FIG. Fitting portions 8a and 9a for fitting 10 and 11 may be formed.

As described above, this invention consists of both long fixing members arranged on the frames of both adjacent buildings, and a long fixing member disposed astride between these fixing members and attached to the outer wall surfaces of the frames of both buildings. an elongated cover member having side edges in close contact with each other at both ends to seal the space between the two bodies; The expansion joint is mainly composed of a spring member movably held with respect to a fixed member, and the fixed members have a wall between the outer wall surfaces of the two main bodies and the back side of the cover member. A partition wall that partitions the space between the two bodies from the space between the bodies is protruded toward the back side of the cover member, and the spring member is formed in a substantially W-shape, and the top part thereof has the above-mentioned A locking portion is formed to be locked to the back surface of the cover member,
At the tips of both legs of the spring member, locking portions are formed that are respectively locked to spring locking portions formed on the fixing member inside the partition walls of both the fixing members, and further, locking portions are formed on the distal ends of both leg pieces of the spring member. The distance between the locking parts at the tip is L2 < L3, where L3 is the distance when the spring member is attached to the back side of the cover member, and L2 is the distance between the spring locking parts of both fixing members. This is an expansion joint that is set to have the following relationship.

Therefore, even if the air pressure around the expansion joint increases due to wind pressure during wind and rain, and rainwater, etc. infiltrates into the space, this infiltrated rainwater, etc. will be stopped by the partition wall. By doing so, it is possible to prevent rainwater and the like from flowing into the gap between the two bodies, and it is possible to improve watertightness.

Moreover, when attaching the cover member to both fixing members, the locking portion formed at the top of the spring member is locked to the back surface of the cover member, and the locking portions at the ends of both legs of the spring member are fixed to both of the fixing members. This can be easily done by engaging the spring retaining portions of the members, and since fastening members such as screws are not required, it is possible to improve the weather protection and the appearance of the screws and other parts.

Furthermore, when installing the cover member, after the spring member is secured to the back surface of the cover member, both leg sides of the spring member are pressed together with the cover member toward the spring locking portions of both fixing members. By sliding along the spring locking portions with a guiding action, the locking portions at the ends of both legs can be engaged with both spring locking portions, which improves the ease of attaching the cover member to both fixing members. It is possible to further improve the performance.

[Brief explanation of drawings]

The drawing shows one embodiment of this 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 cover member, the spring locking part of the fixing member, and the spring member. 4 is a sectional view showing the expansion joint of the second embodiment, and FIGS. 5, 6, and 7 are sectional views of other embodiments, respectively. FIG. 1... Expansion joint, 2, 3...
...Fixing member, 6...Cover member, 7...Spring member, 8, 9...Partition wall, 12, 13...Spring locking part, 20...Spring locking part, 21...Locking part, 2
2, 23...Locking part, A, B...Space part.

Claims (1)

[Scope of utility model registration request] Both elongated fixing members arranged on the frames of both adjacent buildings, and side edges at both ends that are disposed astride between these two fixing members and are in close contact with the outer wall surfaces of the frames of both buildings. a long cover member that seals the space between the two body frames; and a spring that is disposed between the fixing members and the cover member and holds the cover member movably relative to the fixing members. The expansion joint is mainly composed of a member, and in both the fixing members, a space between the outer wall surface of the frame of both the bodies and the back side of the cover member is formed between the two bodies. A partition wall that partitions the gap projects toward the back side of the cover member, and the spring member is formed in a substantially W-shape, and has a locking member attached to the top of the spring member that is attached to the back face of the cover member. A stop part is formed, and a stop part is formed at the tip of both legs of the spring member, and a stop part is formed on the inner side of the partition wall of both the fixing members to be respectively engaged with a spring catch part formed on the fixing member, Furthermore, the distance between the locking parts at the tips of both legs of the spring member is L3 when the spring member is attached to the back side of the cover member, and L2 is the distance between the spring locking parts of both fixing members. When you do,
An expansion joint characterized by being set so that the relationship L2<L3.