JPH0322494B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention applies to the frameworks of both adjacent buildings, for example,
Regarding expansion joints that connect floors to floors, floors to walls, walls to walls, walls to ceilings, ceilings to ceilings, roofs to roofs, roofs to walls, etc., for details, see Both fixed covers are attached to the front side of both fixed members, while both ends of a movable cover that closes the gap between the frameworks are slidably sandwiched between both fixed members and both fixed covers. This invention relates to improvements to expansion joints that can cope with fluctuations due to earthquakes, ground subsidence, expansion and contraction of buildings, etc.

Conventionally, in this type of expansion joint, a movable cover is usually placed in advance so as to straddle between both fixed members before both fixed covers are assembled to both fixed members. For this reason,
Thereafter, when assembling both fixed covers to both fixed members, the movable cover would be misaligned, making the work difficult. Moreover, even after the movable cover and both fixed covers are assembled to both fixed members, the movable cover tends to shift position, and sometimes the position shift of the movable cover causes the gap between the two frames to become clogged. There were defects that led to defects.

An object of the present invention is to eliminate the above-mentioned drawbacks, and a spring member is interposed between at least one of the fixed members and the movable cover to position and hold the movable cover with respect to the fixed member. An object of the present invention is to provide an expansion joint that can effectively prevent a movable cover from shifting.

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

In the first embodiment shown in FIG. 1, an expansion joint 1 is shown that connects the frames (floors) K1 and K2 of both buildings. 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 a predetermined number of attachment parts 4 and 5. That is, the mounting members 4 and 5 are welded to anchors 6 protruding from the body surface or are fastened with screws 7, and both fixing members 2 and
3 is firmly fixed by engagement between the mounting pieces 4a, 5a and the engaging portions 2a, 3a and by screws 8, 9, as shown in the figure.

Fitting portions 2b and 3b for fitting both ends of the water stop plate 10 made of synthetic resin, rubber, etc. are formed on opposing end surfaces of both fixing members 2 and 3, and a protruding spring engaging portion is formed on the upper surface of the one end. Stop portions 11 and 12 are formed.
In this embodiment, the spring locking parts 11 and 12 also serve as supporting parts that support the back surface (lower surface) of the movable cover 17. Further, the tips 11a and 12a of the spring locking parts 11 and 12 are formed to have a triangular or arcuate cross section, and at least one side of both sides of the locking parts 11 and 12 has a sawtooth cross section. locking surface 11b,
12b is formed. Furthermore, the locking surface 11b,
The cutting edge of the saw blade 12b is formed with a large protruding amount to serve as retaining portions 13c and 14c, which actively prevent the spring member 19 from coming off.

A supporting edge 2d is provided on the upper surface of the other end of both fixing members 2 and 3.
3d protrudes, and cover attachment portions 2e and 3e for attaching the fixed covers 13 and 14 in a cantilevered manner are formed on the upper end surfaces of the support edges 2d and 3d.

Both fixing covers 13 and 14 are attached in a cantilever manner to the cover mounting parts 2e and 3e of both fixing members 2 and 3 with screws 23 and 24, etc., and these fixing members 2 and 3 and both fixing covers 13 and 14, there are formed sliding spaces 25 and 26 into which both ends of the movable cover 17 are slidably inserted. The tips of both fixed covers 13 and 14 extend to near the spring locking parts 11 and 12 of both fixed members 2 and 3,
The fixed covers 13, 14 have protruding edges 13a, 14a formed on the lower surfaces of their tips to face the spring locking portions 11, 12 at a predetermined distance.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 is connected to the spring locking parts 11 and 12 of both the fixed members 2 and 3 when its both ends are inserted into the sliding spaces 25 and 26. , both fixed covers 13,1
It is slidably held between the projecting edges 13a and 14a of No. 4. Removable prevention edges 17a and 17b are formed at both ends of the movable cover 17, and a protruding spring locking portion 18 is formed at the back of the central portion of the movable cover 17. A retaining portion 18a having a triangular or arcuate cross section is formed at the tip of the spring locking portion 18. A fitting portion 17c is formed on the upper surface of the center portion of the movable cover 17, and dovetail grooves 17d and 17e into which one ends of gaskets 15 and 16 are fitted are formed on both left and right sides of this fitting portion 17c. .

The left and right gaskets 15 and 16 disposed on the upper surface of the movable cover 17 are made of synthetic resin, rubber, etc. and are formed into a hollow bellows shape that can be expanded and contracted.
Fitting portion 15 fitted into dovetail grooves 17d and 17e
a, 16a are formed, and a fixed cover 1 is formed at the other end.
Locking grooves 15b and 16b into which the projecting edges 13a and 14a of No. 3 and 14 are fitted are formed.

A spring member 19 is interposed between the fixed members 2 and 3 and the movable cover 17 to position and hold the movable cover 17 relative to the fixed members 2 and 3.
This spring member 19 is formed into a substantially W-shape from a flat band spring material so that it can elastically expand and contract in response to the fluctuations of both the main bodies K1 and K2, and the movable cover 19
It has a spring force that urges the fixing members 2 and 3 toward the fixing members 2 and 3.
A movable cover 17 is provided on the top of the spring member 19.
A U-shaped locking portion 20 having locking claws 20a on both sides of the opening that elastically locks with the spring locking portion 18 is formed, and is fixed to the tips of both leg pieces 19a and 19b of the spring member 19. Spring locking portions 11, 1 of members 2, 3
Locking portions 21 and 22 are formed in the shape of an inverted U, respectively, and have locking claws 21a and 22a on both sides of the opening that elastically lock the locking portions 21 and 22.

In the expansion joint 1 of the first embodiment configured as described above, both bodies K1,
When K2 fluctuates, the spring member 19 elastically expands and contracts in response to this fluctuation, while the spring member 1
A movable cover 17 is positioned and held by 9.
slides in the sliding spaces 25, 26 between the two fixed members 2, 3 and the fixed covers 13, 14, so the gap S between the two main bodies K1, K2 is larger than the movable cover 17.
It is always well occluded by

In addition, the spring locking portions 11 and 1 of both fixing members 2 and 3
The locking portions 20, 21, and 22 of the spring member 19 can be easily engaged with the spring locking portions 18 of the movable cover 17 and the spring locking portions 20, 21, and 22 of the movable cover 17 by a pushing operation. Furthermore, these spring locking parts 11, 12, 19
In the state in which the locking parts 20, 21, and 22 are locked, the movable cover 17
The movable cover 17 can be positioned and held by the spring member 19, thereby preventing the movable cover 17 from shifting. Furthermore, between both fixing members 2 and 3,
After assembling the movable cover 17 with the spring member 19, both fixed covers 1 are attached to the front surfaces of both fixed members 2 and 3.
When assembling 3 and 14, the spring member 19
By positioning and holding the movable cover 17 and preventing displacement of the movable cover 17, the work of assembling the fixed covers 13 and 14 can be easily performed.

Next, in a second embodiment shown in FIG. 2, an expansion joint 1 is shown that connects the frames (floors and walls) K1 and K2 of both buildings. In this joint 1, the fixing member 2 fixed to the frame surface of one frame K1 by the mounting member 4 and the fixing cover 13 attached in a cantilevered manner to the surface of this fixing member 2 are almost the same as in the first embodiment. The same is true.

Dovetail-shaped fitting grooves 3f for attaching the fixing cover 14 are provided at the top and bottom of the surface of the fixing member 3 fixed to the frame surface of the other frame K2 by screws 30.
is formed. At the lower end of the fixing member 3, a support portion 3g having a hollow box-shaped cross section or the like is formed that extends toward one of the fixing members 2, and a fitting portion for the water stop plate 10 is formed on the tip end surface of the support portion 3g. 3b is formed. Further, a spring locking portion 12 that also serves as a support portion for supporting the back surface of the movable cover 17 is formed on the upper surface of the tip end of the support portion 3g.

Fixed cover 1 arranged on the surface side of the fixed member 3
4 is formed into an L-shaped cross section, and on the back side of one side of the fixing cover 14 facing the surface of the fixing member 3, a clip 2 is provided for both upper and lower fitting grooves 3f of the fixing member 3.
A locking protrusion 14b is formed to be fitted via a pin 7 or the like. A sliding space 26 into which the end of the movable cover 17 is slidably inserted between the other side forming the free end side of the fixed cover 14 and the support portion 3g of the fixed member 3
is formed. A fitting part 14c for the gasket 31 that is in close contact with the body surface is formed at the upper end of one side of the fixed cover 14, and a movable fitting part 14c for the gasket 31 is formed at the tip of the other side, which is a free end. Projecting edges 14a are formed to face each other with the cover 17 interposed therebetween. A gasket 16 is provided on the outer surface of this protruding edge 14a.
A dovetail groove 14d is formed.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 and the spring member 19 that positions and holds the movable cover 17 with respect to both the fixed members 2 and 3 are substantially the same as those in the first embodiment.

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

Next, in the third embodiment shown in FIG. 3, the frameworks (wall to wall or ceiling to ceiling) of both buildings K1, K2
An expansion joint 1 is shown connecting the . At this joint 1, both bodies K
Both fixing members 2 and 3, which are left and right symmetrical, are fixed to the frame surface of K2 with screws 29 and 30, and a water stop plate 10 is attached to one end of each of these fixing members 2 and 3 facing each other. Fitting portions 2b, 3b and spring locking portions 11, 12 are formed as shown in the figure.
Note that when the frames K1 and K2 are inner walls or ceilings, the water stop plate 10 does not necessarily need to be provided, and therefore the fitting portions 2b and 3b may not be provided.

A sliding space 2 is provided on the surface side of both fixing members 2 and 3.
Both fixing covers 13 and 14 are mounted in a cantilevered manner via locking tools 32 and 33 with 5 and 26 separated from each other. The free end portions of both fixed covers 13 and 14 are provided with spring locking portions 1 of both fixed members 2 and 3.
1 and 12 are formed with projecting edges 13a and 14a that face each other with a movable cover 17 in between.
A dovetail groove 13 for fitting gaskets 34 and 35 in close contact with the surface of the movable cover 17 is provided on the tip surface of a.
e, 14e are formed. In addition, fitting portions 13f and 14f are formed at the base ends of both fixed covers 13 and 14 for fitting gaskets 36 and 37 that are in close contact with the body surfaces of the bodies K1 and K2.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 and the spring member 19 that positions and holds the movable cover 17 relative to the fixed members 2 and 3 are substantially the same as those in the first embodiment. However, in this example,
Since no gasket is provided on the surface of the movable cover 17, no fitting portion for the gasket is formed.

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

Next, in the fourth embodiment shown in FIG. 4, the frames of both buildings (wall-to-wall or ceiling-to-wall at the corner)
An expansion joint 1 connecting K1 and K2 is shown. In this joint 1, the fixing member 2 and the fixing cover 13 disposed on the body surface of one body K1 are substantially the same as those in the third embodiment.

The fixing member 3 and fixing cover 14 provided on the other frame K2 are substantially the same as those in the second embodiment. However, in this embodiment, since a gasket is not disposed on the surface of the movable cover 17, a dovetail groove is formed on the tip surface of the protruding edge 14a of the fixed cover 14 for fitting the gasket 35 in close contact with the surface of the movable cover 17. 14e is formed.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 and the spring member 19 that positions and holds the movable cover 17 relative to the fixed members 2 and 3 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 first embodiment.

Next, in a fifth embodiment shown in FIG. 5, an expansion joint 1 is shown that connects the frames (roofs) K1 and K2 of both buildings. In this joint 1, left-right symmetrical fixing members 2 and 3 are fixed to the body surfaces of both the bodies K1 and K2 by screws 29 and 30, and one end of these fixing members 2 and 3 facing each other is fixed to the body surfaces of both bodies K1 and K2. Fitting portions 2b, 3b for the waterstop plate 10 and spring locking portions 11, 12 are formed in the figure, as shown in the figure. Both fixing members 2,
Locking edges 2g, 3g are formed at the other ends of the fixing members 3, and locking portions 2i, 3i having a substantially hook-shaped cross section are formed at approximately the center of the upper surfaces of both the fixing members 2, 3.

Sliding spaces 25, 2 are provided on the surface sides of both fixing members 2, 3.
Both fixed covers 13, 1 can be installed across 6.
4 is formed into a substantially L-shaped cross section along both fixing members 2 and 3, and these fixing covers 13 and 1
Locking parts 13g and 14g that lock with the locking parts 2i and 3i of the fixing members 2 and 3 are formed on the rear surface of the upper plate part forming one side of 4, and the lower end of the side plate forming the other side. Locking portions 13h and 14h are formed to engage with the tips of locking edges 2g and 3g of fixing members 2 and 3. Furthermore, spring locking portions 11 and 12 of both fixing members 2 and 3 are provided at the tips of the upper plates of both fixing covers 13 and 14.
a protrusion 13a facing the movable cover 17,
Dovetail grooves 13e and 14 are formed in the lower end surfaces of the projecting edges 13a and 14a for fitting gaskets 34 and 35 that are in close contact with the upper surface of the movable cover 17.
e is formed.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 and the spring member 19 that positions and holds the movable cover 17 relative to the fixed members 2 and 3 are substantially the same as those in the third 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. 6, an expansion joint 1 is shown that connects the frames (roof and walls) K1 and K2 of both buildings. In this joint 1, the fixing member 2 and the fixing cover 13 disposed on the body surface of one body K1 are substantially the same as those in the fifth embodiment.

The fixing member 3 and fixing cover 14 provided on the other frame K2 are substantially the same as those in the fourth embodiment.

The movable cover 17 that closes the gap S between the two main bodies K1 and K2 and the spring member 19 that positions and holds the movable cover 17 relative to the fixed members 2 and 3 are substantially the same as those in the third embodiment.

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

In addition, in each of the above embodiments, both fixing members 2,
3. For the fixed covers 13, 14, the movable cover 17, etc., extruded aluminum alloy moldings may be used.

Further, the movable cover 17 may have a cross-sectional shape of a mountain or a flat plate, or may have an arc-shaped cross-section as shown in FIG.

Further, as shown in FIG. 7, supporting parts 2c and 3c for supporting the back surface of the movable cover 17 may be formed on the fixed members 2 and 3 separately from the spring locking parts 11 and 12.

Furthermore, as shown in FIG. 7, both fixing members 2,
Both fixed covers 13 and 14 may be fixed to the cover mounting portions 2e and 3e of No. 3 in a cantilevered manner via clips 27 or the like.

As described above, in the present invention, both fixed covers are attached to the front surfaces of both fixed members arranged on the frames of both adjacent buildings, while the movable cover that prevents the gap between the two building frames is fixed. An expansion joint whose both ends are slidably held between the fixed members and the fixed covers, and the movable cover is fixed between the fixed members and the movable cover. A spring member is interposed to position and hold the member, and the spring member is approximately W.
The movable cover is formed into a letter shape, and a locking portion is formed at the top of the approximately central portion thereof to be locked to approximately the central portion of the back width direction of the movable cover, and the tip portions of both leg pieces of the spring member are
The expansion joint is formed with locking portions that are respectively locked to spring locking portions formed on both of the fixing members.

Therefore, the movable cover can be positioned and held with respect to both fixed members by the spring member, and the positional shift of the movable cover can be effectively prevented. Therefore, it is possible to improve the work of assembling the movable cover and both fixed covers to both fixed members, and it is also possible to prevent failures such as failure to close the gap between both frames caused by positional deviation of the movable cover. There is an effect that can be done.

Moreover, to attach the movable cover to both fixed members, the locking portion formed at the top of the spring member is locked to the back surface of the movable cover, and the locking portion at the tip of both legs of the spring member is attached to both fixed members. The movable cover can be attached easily and quickly by being engaged with the spring retaining portions of the movable cover. Furthermore, since fastening members such as screws are not required, it is possible to improve the weather protection and the appearance of the screws and the like.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a sectional view showing the expansion joint of the first embodiment, FIG. 2 is a sectional view of the expansion joint of the second embodiment, and FIG. 3 is a sectional view of the expansion joint of the third embodiment. A cross-sectional view showing
FIG. 4 is a sectional view showing the expansion joint of the fourth embodiment, FIG. 5 is a sectional view showing the expansion joint of the fifth embodiment, and FIG.
A sectional view showing the expansion joint of the embodiment, and FIG. 7 is a sectional view showing another embodiment. 1... Expansion joint, 2, 3...
...Fixing member, 11, 12... Spring locking portion, 13,
14...Fixed cover, 17...Movable cover, 18
...Spring locking portion, 19...Spring member, 20...Locking portion, 21, 22...Locking portion, 25, 26...Sliding space.

Claims (1)

[Claims] 1 Both fixed covers are attached to the front surfaces of both fixed members arranged on the frameworks of both adjacent buildings, while the movable cover that prevents the gap between the two frameworks has both ends connected to the fixed members. An expansion joint that is slidably held between the two fixed covers, and a holding spring that positions the movable cover with respect to the fixed member between the two fixed members and the movable cover. A member is interposed therebetween, and the spring member is formed in a substantially W-shape, and a locking portion is formed at the top of the substantially central portion of the spring member to be fixed to the substantially central portion of the rear width direction of the movable cover. An expansion joint characterized in that locking portions that are respectively locked to spring locking portions formed on both of the fixing members are formed at the distal ends of both leg pieces of the spring member.