JPH0318564Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a waterproofing device for an expansion joint that closes a gap between a support member of a cover member in an expansion joint and a building frame.

(Prior art) Conventionally, when installing an expansion joint between building frames installed facing each other, a support member is attached to the opposing ends of both building frames, and a cover member is placed on the support member. is constructed, an airtight material is fitted to the end of the cover member, this airtight material is pressed into contact with the building frame, and a caulking material is applied between the airtight material and the surface of the building frame to perform waterproofing. Ta. However, when the finish of the building frame is rough and uneven, when rough wall materials are used, and when weathering occurs due to a decrease in the weather resistance of the caulking material, the adhesion of the caulking material is poor and the This had the disadvantage that the caulking material peeled off over time, significantly reducing the waterproofing effect.

(Purpose of the invention) The present invention solves the above-mentioned drawbacks, and in particular, at the end of the support member of the cover member installed between the building frames,
A parting edge and a supporting edge for receiving caulk are provided,
The purpose of this invention is to propose a waterproofing device for an expansion joint that can prevent the caulking material from separating by filling these parts with caulking material and maintain its waterproofing effect over a long period of time.

(Means for achieving the object) In order to achieve the above object, the expansion joint waterproofing device according to the present invention fixes fixing pieces at intervals to building frames facing each other with a gap, A long support substrate is attached to both of these fixing pieces, and a cover member covering the gap is installed on the side of the gap of the support substrate, and a cover member is provided at the end of the support substrate on the side opposite to the gap side. An L-shaped caulking receiving part is formed by the separated parting edge and a supporting edge protruding from the base side of the parting edge to the back side of the support substrate, and the caulking receiving part is filled with a keying material, and the caulking part is filled with a keying material. Further, a supporting edge parallel to the supporting edge is provided protrudingly, and at least the tip of the outer supporting edge is brought into linear contact with the surface of the building frame, and a space is formed between adjacent supporting edges. , the fixing piece is arranged in the space, and the adjacent support edges are fixed to locking bending pieces bent at both ends of the fixing piece.

(Example) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numerals 1 and 2 are building frames, and a gap 3 is formed between these building frames 1 and 2, and the opening of the gap 3 is closed by an expansion joint A. This expansion joint A is constructed by securing a cover member 13 to support members 4, 4 provided at the ends of the building frame 1, 2 via a joint holder 8. It is composed of

First, the support members 4, 4 are provided at the ends of the building frames 1, 2 to support the cover member 13, and are provided on the gap 3 side of the support substrate 5 formed long along the longitudinal direction of the gap 3. A fitting groove 7 that supports the elastic waterstop plate 6 and an engaging groove 9 of the joint holder 8 that supports the cover member are provided in corresponding portions, while an end corresponding to the side opposite to the gap 3 side is provided. In the department,
A parting edge 10 for receiving caulking is provided, and supporting edges 11, 11 are provided protruding from this parting edge 10 to the back side of the support substrate 5. Short or long fixing pieces 19 are fixed with screws 21 at regular intervals along the longitudinal direction of the upper surfaces of the building frames 1 and 2, respectively, and bent bent pieces are attached to both ends of the fixing pieces 19. 20, 20 are formed. The supporting members 4, 4 have locking bent pieces 20, 20 press-fitted between the supporting edges 11, 11, and the supporting edges 11, 1
It is fixed onto the building frames 1 and 2 by locking the locking grooves 11a and 11a formed on the inside of 1 and the locking bent pieces 20 and 20 of the fixing piece 19. At this time, the tips of the supporting edges 11, 11 are in linear contact with the building frame surface. Moreover, the supporting edge 11,
A space S is formed between 11. Further, an airtight material 18 is fitted into the upper part of the engagement groove 9 in the support members 4, 4. Note that the fixing piece 19 is arranged in the space S.

The joint holder 8 is made of a spring material and has a W-shaped locking piece 8b fixed to the lower part of a plate-like piece 8a whose both ends are bent diagonally downward. Engagement groove 9 of support members 4, 4,
9, the supporting members 4, 4 are attached at regular intervals along the longitudinal direction.

Next, the cover member 13 is installed on the support members 4, 4 via the joint holder 8, and is installed astride between the building frames 1, 2, and has a cover body 13a.
Hanging pieces 14, 14 are formed from both ends of the hanging pieces 14, 14, and serrated locking parts 15, 15 are formed on the inner surfaces of the hanging pieces 14, 14.
is formed. Then, the cover member 13 is
The joint holder 8 attached to the support members 4, 4 is press-fitted from above, and the locking portions 15, 15 are locked and attached to the plate-like pieces 8a. At this time, the airtight material 18 comes into contact with the inner surface of the cover member 13 to maintain airtightness.

The expansion joint A is constructed as described above, and a finishing material 22 such as a tile is stretched on the upper surface of the building frame 1, 2 at a slight distance from both ends of the supporting members 4, 4. ing. On the other hand, a parting edge 1 is provided at the end of the expansion joint A opposite to the gap 3 of the supporting members 4, 4.
0 and 10 are extended, and support edges 11 and 11 are provided on the same side at right angles to the above-mentioned parting edges 10 and 10, and these parting edges 10 and 10 and the supporting edges 11 and
11 forms a receiving portion 23 for the caulking material 12. Therefore, the caulking material 12 is filled in the receiving portion 23, and the expansion joint A is waterproofed.

In this way, caulking material receiving portions 23 are formed at both ends of the supporting members 4, 4 in the expansion joint A, and the caulking material 12 is
Since it is reliably held by the receiving portion 23, it is possible to prevent rainwater from entering between the wall surfaces of the building frames 1 and 2 and the support members 4 and 4. In addition, even if the walls of the building frames 1 and 2 have an uneven finish or a rough finish, the caulking material 12 can be seen as a support on the partition edges 10, 10 and the support edges 11, 11, so that waterproofing is ensured. achieved.

Further, the supporting members 4, 4 are connected to the locking grooves 11a, 11a formed inside the supporting edges 11, 11 and the fixing piece 1.
By locking the locking bending pieces 20, 20 of 9, it is easily and reliably fixed onto the building frames 1, 2.

Furthermore, a support edge 11 is provided on the surface of the building frames 1 and 2,
Since the tips of the parts 11 and 11 are in linear contact with each other, the installation state is stable. On the other hand, when the supporting substrates 5, 5 directly contact the surfaces of the building frames 1, 2 in a planar manner, the supporting substrates 5, 5 are likely to be twisted. In addition, since the supporting edges 11, 11 are brought into linear contact with the surfaces of the building frames 1, 2, and a space S is formed between the adjacent supporting edges 11, 11, it is effective to prevent the capillary phenomenon from occurring. can be prevented. When the support substrates 5, 5 come into planar contact with the surfaces of the building frames 1, 2, a capillary phenomenon occurs, allowing rainwater to enter.

In addition, FIG. 2 shows an example in which an expansion joint B is provided in the gap 3 at the inner corner of the building frames 1 and 2, and the support member 4 on the side of the frame 2 is bent at the middle part, It is attached at the end along the wall in the same manner as shown in Figure 1. In this case as well, the ends of the supporting members 4, 4 have a parting edge 10 and a supporting edge 1.
A caulking material receiving portion 23 is formed by 1 and
The caulking material 12 filled in the receiving portion 23 ensures that the expansion joint B is waterproofed.

In addition, in the structure where the ends of the support members 4, 4 are exposed to the outside as described above, an exterior material is constructed on the surface of the building frame, and then an expansion joint A is installed between the above-mentioned frames 1, 2. Since the filling process can be carried out, it is possible to perform retrofitting at the site at the same time, thereby eliminating the need for double installation work. On the other hand, a part of the supporting member of a conventional expansion joint is buried in the installation end of the building frame, so it is not possible to arrange exterior materials on the surface of the building frame in advance, so the expansion joint Exterior materials must be installed after the joints and joints are installed, and caulking must be applied afterwards, resulting in twice the effort.

In this case as well, the caulking material 12
Since it is reliably held, rainwater can be prevented from entering between the building frame 1 and the support member 4. Further, as in the case of the above-mentioned example, the supporting edges 11, 11 and the locking bent pieces 20, 2 of the fixing piece 19 are
0, easy and reliable fixing effect of the support member 4 by locking with 0, installation stability effect due to line contact between the support edges 11, 11 and the building frame 1, and support edges 11, 11.
It is also possible to obtain the effect of preventing the occurrence of capillary phenomenon due to the space S in between.

As shown in FIG. 3, an airtight material fitting groove is provided on the lower surface of the support edge 11, and the support edge 1
The structure may be such that the parting edge 10 is provided on the outside of the parting edge 10, and the caulking material receiving part 23 is formed inside the airtight material 18 and the parting edge 10. According to this configuration, airtightness and watertightness are maintained doubly by the caulking material 12 and the airtightness material 18, and since the airtightness material 18 is placed inside the caulking material 12 and is not directly exposed to the outside, durability is improved. improves.

Regarding the tip of the support edge 11, it is sufficient that at least the tip of the outer support edge is in linear contact with the building frame surface, and it is not necessary that all the support edges are in linear contact. do not have.

As explained in detail above, the expansion joint waterproofing device according to the present invention has fixing pieces fixed at intervals to building frames facing each other with a gap in between, and long supports are attached to both fixing pieces. A substrate is attached, and a cover member covering the gap is installed on the side of the supporting substrate with the gap, and a parting edge formed at the end of the supporting substrate and a parting edge formed on the side opposite to the gap side of the supporting substrate. A support edge protruding from the base side to the back side of the support substrate forms an L-shaped caulking receiving part, and a support edge parallel to the support edge is further provided protruding from the back side, and at least the outer support edge The tip of the fixing piece is brought into linear contact with the surface of the building frame, a space is formed between adjacent support edges, the fixing piece is placed in the space, and the fixing piece is bent at both ends. The adjacent support edges are engaged with the bent bending pieces.

Therefore, even if upward peeling action occurs on the caulking material filled in the caulking receiving area, it will be suppressed to the edge, so even if the finishing of the building frame is rough, it will not result in uneven walls and the weather resistance of the caulking material will be reduced. Even if the caulking material deteriorates and weathers, the caulking material is reliably retained in the caulking material receptacle, so it is possible to maintain a good waterproof effect over a long period of time. Since it is not visible on the outside, the exterior finish is also good.

Further, since the tip of the support edge is brought into linear contact with the surface of the building frame, the installation state is stable. Furthermore, since the supporting edges are brought into linear contact with the surface of the building frame and a space is formed between adjacent supporting edges, it is possible to effectively prevent capillary action from occurring.

Moreover, the support member can be easily and reliably fixed onto the building frame by locking the support edge and the locking bent piece of the fixing piece.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the expansion joint waterproofing device according to the present invention, and Figures 2 and 3 are
The figures are cross-sectional views of other examples of waterproof devices. Code A,...expansion joint,
1, 2... Building frame, 3... Gap, 4... Supporting member, 8... Joint holder, 10... Parting edge, 11... Supporting edge, 12... Caulking material, 1
3...Cover member, 19...Fixing piece, 23...Caulking material receiving portion.

Claims (1)

[Scope of utility model registration request] Fixing pieces are fixed at intervals to opposing building frames with a gap in between, a long support board is attached to both of these fixing pieces, and a cover member covering the gap is erected on the side of the gap of the support board. At the same time,
On the side opposite to the gap side of the support substrate, an L-shaped caulking receiving part is formed by a parting edge formed at the end thereof and a supporting edge protruding from the base side of the parting edge to the back side of the supporting board. The caulk receiving part is filled with a caulking material, and a support edge parallel to the support edge is provided on the back side, and at least the tip of the outer support edge is aligned in a line with the surface of the building frame. At the same time, a space is formed between adjacent support edges, the fixing piece is arranged in the space, and the adjoining support edges are attached to the locking bent pieces bent at both ends of the fixation piece. A waterproofing device for an expansion joint characterized by being attached.