JPH0256459B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) This invention relates to an expansion system that is extendably installed between, for example, outdoor walls (including inside corners) of buildings mainly composed of adjacent concrete walls. It is about the joint.

(Prior art and problems to be solved) Conventionally, this type of expansion joint installed in the gap between adjacent building blocks has a pair of fixing members fixed to the outdoor wall surfaces of both building blocks. Since it is pre-installed together with the mortar material that will be applied to the outdoor wall surface, a cover member to cover the gap must be installed several days after the mortar material has solidified, so the installation of the expansion joint requires two steps. In addition, a water stop plate that is installed in a gap through a fixing member must be installed together with the fixing member in advance if the water stop plate is attached in a restrained manner by the same fixing member. During mortar construction, mortar adheres to the water stop plate and cleaning it is extremely time-consuming.In addition, the installation configuration for the water stop plate that is to be installed later requires locking edges with a roughly arrowhead-shaped cross section on both ends of the water stop plate. Since the locking edge is fitted into a dovetail-shaped fitting groove formed on the fixing member, the arrowhead-shaped base is subject to severe deterioration. As a result, the installation of the water stop plate became extremely unstable, resulting in the problem that it could come off, and there was also a problem with watertightness due to the two-time construction process.

The present invention has been made to solve the above-mentioned conventional technical problems, and can be extremely easily installed on an outdoor wall surface in the gap between adjacent building blocks by retrofitting, and a water stop plate can be installed in the gap. The object of the present invention is to provide an expansion joint that can be stably installed and ensure a waterproof effect inside and outside the gap.

(Means for Solving the Problem) In order to solve the above-mentioned technical problem, the present invention is an expansion joint that is installed on the front side between outdoor wall surfaces in a gap between adjacent building frames,
Along the front side of the outdoor wall surface, a fixing member having a bearing edge that protrudes from the front side of the outdoor wall surface and forms an intermediate closing part is provided with a mounting screw or the like, and this fixing member has a plurality of chevron-shaped grooves on the inner surface. The fitting groove has a plurality of chevron grooves that engage with the plurality of chevron grooves arranged oppositely, and the fitting groove has a plurality of chevron grooves that engage with the plurality of chevron grooves disposed oppositely. A water stop plate having a swollen locking end portion that forms a hollow portion is disposed inside the gap and is attached to the rear side closing portion via the locking end portion to close the gap portion. In addition, an engaging member is disposed between the fixing members to attach the fixing members to each other, and the cover member is arranged in a crown shape so as to be able to shield the gap and the opposing fixing member from the engaging member. Further, both edges of the cover member have grooves into which the head and neck of a sealing member having a tongue and a head, which are elastically crimped to the front side of the outdoor wall, are fitted. The holding part and the sealing member form a closing part that shields the side of the fixing member, and the cover member is attached to the front side of the outdoor wall surface of the frame in an elastic crimping manner. The expansion joint is configured such that a plurality of spaces are formed by the closing portions on the back side of the expansion joint.

(Embodiment) Next, the first embodiment of the present invention will be described in FIGS. 1 to 3.
This will be explained according to the diagram. In the figure, 1 is an expansion joint (hereinafter simply referred to as a joint) in which the gap S is covered in a shielding manner between, for example, the frames K1 and K2 of adjacent buildings. It is composed of a pair of fixing members 2 and 3, an engaging member 6, a cover member 9, and a water stop plate 12. Note that a plurality of pairs of fixing members 2 and 3
are arranged at a predetermined distance such that adjacent ones do not interfere with each other due to thermal expansion or the like.

2 and 3 are the pair of fixing members described above, which are arranged oppositely along the outdoor wall surfaces of the frames K1 and K2, and are formed in a symmetrical shape.
The fixing member 2 on the left side of the figure will be explained. This fixing member 2 is arranged along the outdoor wall surface of the frame K1, and a part of the horizontal mounting edge 2a that is attached along the outdoor wall surface has a supporting edge that protrudes toward the outdoor side at a predetermined height. 2b is provided protrudingly, and an extending portion 2c is formed at the end of the mounting edge 2a on the side of the gap S, and an extending portion 2c along the opposing surfaces of the walls K1 and K2 is formed.
A fitting groove 2d into which the locking end edge 12b of the waterstop plate 12 is fitted is formed at the tip of c, and a plurality of chevron-shaped grooves 2f are formed on the inner surface of the opposing edge 2e of this fitting groove 2d.
are provided for each. Further, the end of the mounting edge 2a extends slightly toward the gap S side, and a locking edge 2g having a substantially hook-shaped cross section is formed at the end. Note that the fixing member 3 is designated by the same symbols a to g as the number 3, and the explanation thereof will be omitted. The fixing members 2 and 3 formed in this manner are fixed to each other by bolts, screws, etc. 4 and 5 along the outdoor wall surfaces of the walls K1 and K2.

Reference numeral 6 denotes the above-mentioned engaging member, which includes the fixing member 2,
3, and a cover member 9 is attached thereto, and is composed of a spring member 7 and a base member 8.

Reference numeral 7 denotes a spring member which is elastically engaged between the fixing members 2 and 3. At both ends of the horizontal mounting web 7a, there are V-shaped or substantially U-shaped elastic deformation parts 7b and 7c (not shown). are formed, and a pair of fixing members 2,
Engagement edges 7d, 7 that engage with the engagement edges 2g, 3g of No. 3
e is formed.

Reference numeral 8 denotes a substrate member, which is movably held between the pair of fixed members 2 and 3 by the above-mentioned spring member 7, and is supported by the supporting edges 2b and 3 of the fixed members 2 and 3.
Supported by b. At both ends of the base plate member 8, engaging pieces 8a and 8b are formed, respectively, which are inclined toward the wall surfaces of both the wall bodies K1 and K2, and which elastically engage the cover member 9. moreover,
Preferably, when the cover member 9 is elastically fastened by both the fastening pieces 8a and 8b, the board member 8 is fixed so that both ends of the board member 8 are not bent and deformed toward the wall surfaces of the walls K1 and K2. Deflection prevention pieces 8c and 8d are formed at both ends of the holder 8, respectively. These deflection prevention pieces 8c, 8d are perpendicular to the plate surfaces of the fixing members 2, 3, and their tips are attached to the mounting edges 2a, 3a of the fixing members 2, 3 or the wall K.
1, which comes into contact with the wall surface of K2. In this embodiment, as shown in FIG. 2, the bent portions formed in an inclined manner at both ends of the substrate member 8 are used as the fastening pieces 8a and 8b, and the fastening pieces 8a and 8b are Two parallel notches are made in the center to form bending prevention pieces 8c and 8d.

The mounting web 7a of the spring member 7 is brought into contact with the lower surface of the substantially central portion of the substrate member 8 formed in this manner, and is integrally formed by spot welding (which may be fixed with screws, rivets, etc.). The engaging member 6 has a substantially W-shaped side surface in the drawing.

On the other hand, the cover member 9 that closes the gap S between the two wall bodies K1 and K2 has a saw-blade-shaped engagement section on the left and right sides of the back side where both the engagement pieces 8a and 8b of the base plate member 8 engage. Engaging edges 9c and 9d having mating surfaces 9a and 9b are provided in a protruding manner. Furthermore, a saw-toothed engagement surface 9
The protrusion amount of the lower ends of the base plate members 8a and 9b is larger than that of the other portions, and the engagement pieces 8a and 8b of the base plate member 8 are actively prevented from coming off from the engagement surfaces 9a and 9b. Further, both wall bodies K are provided at both ends of the cover member 9.
1. Tongue edges 10c, 11c and heads 10a, 11 that are in close contact with the outdoor wall surface of K2 to maintain airtightness and watertightness
a, sealing member 1 having neck portions 10b and 11b;
Holding portions 9e and 9f having dovetail grooves 9g for fitting 0 and 11 are formed.

Reference numeral 12 denotes a water stop plate, which is installed between the fitting grooves 2d and 3d of the fixing members 2 and 3 to stop rainwater etc. from entering the gap S, and is made of synthetic resin, rubber, etc. At both ends of the web 12a having a predetermined width, a swollen locking edge 12b that fits into the fitting grooves 2d and 3d of the fixing members 2 and 3 is formed. A plurality of closing portions 12c similar to the chevron grooves 2f and 3f formed in the fitting grooves 2d and 3d are formed in the longitudinal direction of the lower surface, and a plurality of chevron grooves 12c of the locking edge 12b are formed. Inside the portion, an elongated hollow portion 12d is integrally formed orthogonal to the plurality of chevron-shaped grooves 12c. Note that this locking edge 12b is connected to the fitting groove 2d,
3d, and is provided so as to be elastically deformable due to its physical properties and hollow portion 12d, and the locking edge 12b is fitted into the fitting grooves 2d, 3d of the fixing members 2, 3 to secure the joint 1. The gap S on the back side of is closed.

The joint 1 installed in this way is attached to the supporting edges 2b, 3 of the left and right fixing members 2, 3 as shown in the figure.
b constitutes an intermediate closing part that comes into contact with the back side of the cover member 9, and the left and right holding parts 9e, 9f of the cover member 9 and the seal members 10, 11 close the left and right sides of the fixing members 2, 3. The cover member 9 has a plurality of spaces A on the back side, constituting a closing part for shielding the front side and a back closing part by the water stop plate 12.
1, A2, and A3 are formed.

Next, the operation and effect of the first embodiment configured as described above will be explained.

Now, the joint 1 in this example is installed on the front side between the outdoor wall surfaces of the gap S between the adjacent building frames K1 and K2, and is installed along the front side of the outdoor wall surface using the mounting screws 4 and 5. A bearing edge 2 protruding from the front side of the outdoor wall surface and serving as an intermediate closing part for the gap S
The fixing members 2 and 3 having the fixing members b and 3b are provided oppositely, and the fixing members 2 and 3 have a plurality of chevron-shaped grooves 2 on their inner surfaces.
Fitting grooves 2d and 3d are provided opposite to f and 3f,
The fitting grooves 2d and 3d have a plurality of chevron-shaped grooves 12c that engage with the plurality of chevron-shaped grooves 2f and 3f provided oppositely thereto.
A swollen locking end portion 1 having a hollow portion 12d inside the plurality of chevron-shaped grooves 12c.
A water stop plate 12 having a water stop plate 12 having a locking end 12b is attached to close the gap S through the locking end 12b to form a closing part on the back side. Engaging members 6 that are attached to each other are provided, and a cover member 9 is attached to the engaging members 6 in a crown shape so as to cover the gap S and the opposing fixing members 2 and 3. Moreover, both edges of the cover member 9 are provided with tongue edges 10 that are elastically crimped to the front side of the outdoor wall surface.
c, 11c, head 10a, 11a, neck 10
Holding parts 9e, 9f having dovetail grooves 9g into which the head parts 10a, 11a and neck parts 10b, 11b of the sealing members 10, 11 having the sealing members 10, 11b are provided, and the holding parts 9e, 9f and seal member 10,
11 to form a closing part that shields the sides of the fixing members 2 and 3, and is attached to the front side of the outdoor wall surface of the skeletons K1 and K2 in an elastic crimping manner, and the above-mentioned closing parts are attached to the back side of the cover member 9. A plurality of spaces A1, A
2, A3. Therefore, in the joint 1, when both walls K1 and K2 move in the front-rear, left-right, up-down direction, etc., both elastic deformation parts 7 of the spring member 7 respond to this movement.
b and 7c elastically expand and contract, while the cover member 9 and the base plate member 8, while being held by the spring member 7, move appropriately (movement such as tilting or sliding) relative to the fixed members 2 and 3. Therefore, deformation of the cover member 9,
Damage etc. are prevented. In particular, joint 1 in this example
In this case, fixing members 2 and 3 are fixed to the outdoor wall surfaces of both frames K1 and K2 with bolts, screws, etc. 4 and 5 and installed oppositely, and a water stop plate 12 is fitted to these fixing members 2 and 3. , the spring member 7 of the engaging member 6 is elastically engaged with the locking edges 2g, 3g of the fixing members 2, 3, and the board member 8 is horizontally suspended so as to be slidably in contact with the supporting edges 2b, 3b. Since it is a post-installation structure in which the cover member 9 is attached to the member 8 in a crown shape, the joint 1 can be easily installed, and even though it is a post-installation structure, both sides of the cover member 9 A closing part consisting of holding parts 9e, 9f and sealing members 10, 11 pressed against the outdoor wall surface, and supporting edges 2b, 3b of fixing members 2, 3 that abut and support the back side of the cover member 9, The outdoor side of the gap S is a water stop plate due to the deep side closing part by the water stop plate 12 which is attached to the fitting grooves 2d and 3d of the closing part and the fixing members 2 and 3 via the swollen locking edge 12b. 12, the cover member 9 and the seal members 10 and 11 can maintain the airtightness well. Furthermore, a plurality of chevron-shaped grooves 12c are provided on the upper and lower surfaces of both ends of the water stop plate 12 attached to the gap S, and a hollow portion 12d is integrally formed inside a corresponding portion of the plurality of chevron-shaped grooves. Fleshy locking edge 12
b, and a fitting groove 2 formed at the tip of the extending portions 2c, 3c of the pair of fixing members 2, 3.
A plurality of chevron grooves 2f, 3f are provided on the inner surfaces of d and 3d.
are formed respectively, so the water stop plate 1
Fitting groove 2 of fixing members 2 and 3 of locking edge 12b of 2
d and 3d, the deformation is facilitated through the hollow portion 12d, resulting in good insertion performance, and when the mutual chevron grooves 2f, 3f, and 12c are engaged, the locking edge 1
The elastic force of the sealing members 10 and 2b makes it possible to securely engage the sealing members 10 and 2b to prevent them from coming off.
The fitting into the groove 9g of No. 11 can be ensured through the head portions 10a, 11a and the neck portions 10b, 11b, improving the sealing performance, and the holding portions 9e, 9f Seal member 10,1
Appropriate spaces A1, A2, A3 can be positively formed and maintained by the closing part by 1 and the intermediate closing part by the bearing edges 2b, 3b, and each closing part and the spaces A1, A2, A3. This allows the outside air to be shut off in stages, significantly reducing the shaking of the water stop plate 12, and reducing the wobbling of the locking edges 12b in the fitting grooves 2d and 3d, resulting in increased durability in the locked state. The waterproof effect of the gap S can be significantly enhanced by the cover member 9.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. For example, a joint 21 for shielding a gap S' between walls K3 and K4, that is, between an inner corner, The joint 21 includes a plurality of pairs of fixing members 22 and 23, an engaging member 26, a cover member 29, and a water stop plate 32.

22 are arranged along the wall surface of the wall body K3 at a predetermined interval such that adjacent ones do not interfere with each other due to thermal expansion etc., as in the first embodiment, and the mounting edge 2
A support portion 22b that protrudes outward is formed at the right end of 2a in the drawing, and a web 22c is provided at the end of the support portion 22b, and the web 22c engages with the left end of the web 22c toward the outside. A supporting edge 22d for slidingly supporting the substrate member 28 of the member 26 is provided in a protruding manner,
Further, an engaging member 2 is provided at the right end of the web 22c in the drawing.
A locking edge 22e that engages with the spring member 27 of No. 6 is formed. In addition, a water stop plate 32 is provided on the support portion 22b.
A fitting groove 22f for fitting is recessed, and
A plurality of chevron grooves 22g are formed on the opposing surface of the groove 22f. Note that this bearing edge 22d is the first
As in the embodiment, it constitutes an intermediate closing part. Further, the fixing member 23 is fixed to the wall surface of the wall K4 in correspondence with the fixing member 22, and its mounting edge 23
At the upper end of a, an engaging edge 23b having a substantially hook-shaped cross section is provided upward toward the outdoor side. Further, the mounting edge 22a of the fixing member 22 is provided at the lower end of the mounting edge 23a.
A support edge 23c is provided that extends horizontally at approximately the same level as the support edge 23c, and a support edge 23d that extends obliquely and supports the base plate member 28 of the engagement member 26 in sliding contact is formed at the tip of the edge 23c. There is. Further, a locking edge 23e that engages with the spring member 27 is formed in a part of this supporting edge 23d. In addition, the supporting edge 2
A fitting groove 2 into which the water stop plate 32 is fitted is provided on the back side of 3c.
3f is formed, and a plurality of chevron grooves 23g are formed on the opposing surface of the fitting groove 23f. Incidentally, the engaging edge 23b and the bearing edge 23d constitute an intermediate closing portion as in the first embodiment.

Fixing members 22, 23 formed in this way
are fixed to the walls K3 and K4 with bolts, screws, etc. 24 and 25.

The spring member 27, whose both ends are locked by the locking edges 22e, 23e of the fixing members 22, 23 installed in this way, has its central portion spot-welded (by screws, rivets, etc.) with the back surface of the base plate member 28. (may be fixed) to form an integral part with the substrate member 28. This spring member 27 has both large and small elastic deformable parts 27a and 27b provided at both ends thereof, and a gate-shaped incision is made in the widthwise center part of the large elastic deformable part 27a, and the said part is formed as shown in FIG. As shown in FIG.
b is formed, and both elastic deformation parts 27
Engagement portions 27 that elastically engage with the locking edges 22e and 23e of both fixing members 22 and 23 are provided at the tips of a and 27b.
c and 27d are formed, respectively. and,
Substrate member 28 held by spring member 27
is substantially the same as that of the first embodiment, and has locking pieces 28a, 28b and a deflection prevention piece 28 at both ends thereof.
c and 28d are formed, respectively.

On the other hand, the cover member 29 that closes the gap S' between the two walls K3 and K4 is formed in an L-shape in cross section along the wall surfaces of the two wall bodies K3 and K4. Lower edges 30c, 31c and heads 30c, 31 that are in close contact with the wall surfaces of both walls K3, K4
a, sealing member 3 having neck portions 30b, 31b;
Dovetail groove 29h for fitting 0,31
Holding portions 29e and 29f are formed, and the holding portions 29e and 29f and seal members 30 and 31 form a closing portion. Furthermore, an engaging edge 29d protruding from the back surface of the corner portion of the cover member 29
A substrate member 28 is provided on the inner surface of one of the holding parts 29e.
Engagement surfaces 29a and 29b are formed with sawtooth shapes in cross section that engage with both of the engagement pieces 28a and 28b.
Furthermore, an L-shaped locking edge 29g is formed in the upper part of the back surface of the cover member 29 in the drawing, and the locking edge 29g is L-shaped in cross section and engages with the engaging edge 23b of the fixing member 23. Furthermore, the fitting grooves 22f and 23f of the pair of fixing members 22 and 23 are
A water stop plate 32 is fitted in the. This water stop plate 3
2 is a web 32 similar to the water stop plate 12 of the first embodiment.
A swollen locking edge 32b is formed on both edges of a, and a plurality of chevron-shaped grooves 32c are formed along the longitudinal direction on the upper and lower surfaces of the edge 32b. A hollow portion 32b is formed therein so that it can be elastically deformed. On the back side of the cover member 29 of the joint 21 configured in this way, there are holding parts 29e, 29f and seal members 30, 3.
1, a closing part, a bearing edge 22d, and an engaging edge 23.
b. A plurality of spaces B1, B2, B3, and B4 are formed by the intermediate closed portion formed by the bearing edge 23d. Therefore, in this second embodiment as well, the above-mentioned first
This provides substantially the same effects as those of the embodiment.

(Effects of the Invention) The present invention is an expansion joint that is installed on the front side between outdoor wall surfaces in the gap between adjacent building frames, and that is installed along the front side of the outdoor wall surface using mounting screws or the like. A fixing member that protrudes from the front side of the outdoor wall surface and has a supporting edge that also serves as an intermediate closing portion for the gap is provided, and the fixing member has a fitting groove in which a plurality of chevron-shaped grooves are provided on the inner surface thereof. The fitting groove has a plurality of chevron-shaped grooves that engage with the plurality of chevron-shaped grooves provided oppositely thereto, and a hollow part is formed inside the plurality of chevron-shaped grooves. A water stop plate having a locking end is attached to the gap through the locking end in a closed manner to form a closing part on the back side, and the fixing members are connected to each other between the fixing members. an engaging member is disposed, and a cover member is attached to the engaging member in a crown shape so as to be able to shield the gap and the opposing fixing member; The edge is provided with a holding part having grooves into which the head and neck of a sealing member having a tongue and head and neck are elastically crimped to the front side of the outdoor wall surface, and the holding part and the sealing member are connected to each other. A closing part is formed to shield the side of the fixing member, and is attached to the front side of the outdoor wall surface of the frame in an elastic crimping manner, so that a plurality of spaces are formed by the closing parts on the back side of the cover member. Since it is composed of
The installation of the water stop plate, cover member, and sealing member is reliable and sufficient to cope with the relative displacement of adjacent buildings, and the fixing members are fixed to the outdoor walls of both frames with bolts, screws, etc. A water stop plate is fitted to the fixing member, an engaging member is attached to the fixing member, and the cover member is attached to the engaging member in a crown-like manner. Because of this, the expansion joint can be easily installed, and even though it is a retrofitted structure, the closing part is made up of holding parts on both sides of the cover member and a sealing member that is pressed against the outdoor wall surface. , an intermediate closing part by the bearing edge of the fixing member that abuts and supports the back side of the cover member, and a back closing part by the waterstop plate attached to the fitting groove of the fixing member via the swollen locking edge. Depending on the part, the outdoor side of the gap can be kept well sealed by the water stop plate, cover member, and seal member. Furthermore, the locking edge of the waterstop plate installed in this gap is easily deformed through the hollow part, resulting in good insertion performance, and the mutual chevron grooves are engaged. When fitted, the elastic force of the locking edge allows the locking edge to be firmly locked and prevent it from slipping out. In particular, the fitting of the sealing member into the groove of the holding portion protects the head and neck. The holding part and the sealing member can positively form an appropriate space with the closing part and the bearing edge with the intermediate closing part. The outer air can be shut off step by step by each closing part and the space part, and the turbulence of the water stop plate can be significantly reduced. Since there is little wobbling, the durability of the engaged state can be improved, and the waterproof effect of the gap can be significantly enhanced by the cover member, its contribution as an expansion joint is extremely large.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a horizontal sectional view, FIG. 2 is a perspective view of the engaging member, and FIG. 3 shows the fitted state of the water stop plate. A partially extracted enlarged view, FIGS. 4 and 5 show a second embodiment of the present invention, with FIG. 4 being a horizontal sectional view and FIG. 5 being a perspective view of the engaging member. 1, 21...expansion joint, 2,
3, 22, 23...fixing member, 2b, 3b, 22d
...Supporting edge, 23b...Engaging edge, 2d, 3d, 22
f, 23f...fitting groove, 2f, 3f, 22g, 23
g...Chevron groove, 6, 26...Engaging member, 7, 27...
Spring member, 8, 28... Board member, 9, 29... Cover member, 9e, 9f, 29e, 29f... Holding part,
10, 11, 30, 31...Seal member, 12, 3
2... Water stop plate, 12b, 32b... Locking edge, 12
c, 32c...Chevron groove, 12d, 32d...Hollow part, K1, K2, K3, K4...Wall body, S, S'...Gap, A1, A2, A3, B1, B2, B3, B4
...Space department.

Claims (1)

[Claims] 1. An expansion joint that is installed on the front side between outdoor wall surfaces in a gap between adjacent building frames, which is protruded along the front side of the outdoor wall surface with a mounting screw, etc. A fixing member having a bearing edge that also serves as an intermediate closing portion is provided opposite to the gap portion, and this fixing member is provided with a fitting groove in which a plurality of chevron-shaped grooves are arranged in opposition on the inner surface, and the fitting groove has a A water stop having a plurality of chevron-shaped grooves that engage with the plurality of chevron-shaped grooves arranged opposite to each other, and a swollen locking end portion with a hollow portion formed inside the plurality of chevron-shaped grooves. A plate is attached to close the gap through the locking end portion to form a closing portion on the back side, and an engaging member for attaching the fixing members to each other is disposed between the fixing members. A cover member is attached to the engaging member in a crown shape so as to be able to shield the gap and the opposing fixing member, and furthermore, a cover member is attached to both edges of the cover member on the front side of the outdoor wall surface. A holding part having a groove into which the head and neck of a sealing member having a tongue edge and head to be elastically crimped and a neck are fitted is provided, and the sides of the fixing member are shielded by the holding part and the sealing member. An expansion joint having a structure in which a closing part is formed and is assembled in an elastic crimping manner to the front side of the outdoor wall surface of the frame, so that a plurality of spaces are formed by the closing parts on the back side of the cover member.