JPH0321367Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an expansion joint used to close off the frames of opposing buildings, such as floors and walls, with an appropriate gap between them.

(Prior Art) As a conventional expansion joint, there is one shown in FIG. 7, for example.

That is, the reference numerals 1 and 2 in the figure are building blocks that face each other with an appropriate gap between them, and frame members 5 and 6 are connected to each other through brackets 3 and 4 along the longitudinal direction of the gap between the building blocks 1 and 2, respectively. is attached, and a cover plate 7 is provided in a state that spans both the frame members 5, 6, and each of the frame members 5,
By fitting and fixing frame covers 8 and 9 to 6, the gap between the frames 1 and 2 is closed.

Therefore, the cover plate 7 is held at both ends by the frame members 5, 6 and the frame covers 8, 9, and by sliding these sandwiched parts, both the frames 1, 2 are separated. It is designed to follow the displacement of

In the expansion joint configured as described above, since there is a step between the cover plate 7 and the frame covers 8 and 9, both the frame covers 8 and 9 on the upper surface of the cover plate 7 are
In between, an expandable cushioning material 10 made of synthetic resin or the like is fitted so that the floor surface is substantially flat so that it does not become an obstacle for passersby or trolleys.

However, in the case of the above-mentioned conventional expansion joint, since the cushioning material 10 made of synthetic resin or the like is exposed on the floor surface, it has the disadvantage of poor durability. The cushioning material 10 sometimes came off due to the displacement that occurred between the two. Furthermore, although the movable range of the cover plate 7 is determined by the space formed by the frame materials 5, 6 and the frame covers 8, 9, the step portion where the cushioning material 10 is fitted should be made as small as possible. , and when trying to align the upper surfaces of the frame covers 8 and 9 with the floor surface, the frame covers 8 and 9 and the cover plate 7 will approach each other, reducing the movable range, for example, causing vertical movement between the frames 1 and 2. There was a problem that if displacement occurred, there was a risk of damaging the frame covers 8, 9, cover plate 7, etc.

(Purpose of the invention) This invention was created by focusing on these conventional problems.It can be smoothly connected to the building frame surface without using cushioning material, and it can absorb displacement between the building blocks. The purpose is to provide an expansion joint that can obtain a large range.

(Structure of the invention) The structure of the expansion joint according to this invention is such that, in an expansion joint that straddles opposing building frames with an appropriate gap and closes the gap, the gap in the longitudinal direction of one of the building frames is Along the longitudinal direction of the gap, a support member is provided that slopes downward toward the opposing frame, and a holding member that rotatably holds the proximal end of the cover plate is provided along the longitudinal direction of the gap in the other frame. A spring mounting portion provided on the other body side and the cover plate are connected by a spring having a tensile action, and the cover plate is superimposed on the support member, and its tip is pressed against the downward slope portion of the support member. It is characterized by being locked.

(Example 1) This invention will be explained below based on the drawings.

FIGS. 1 to 4 are diagrams for explaining one embodiment of this invention, and in this embodiment, a case is illustrated in which the opposing frames are floor-to-floor.

That is, expansion joint 11
As shown in FIG. 1, the supporting member 14 is provided on one of the building blocks 12 and 13, and extends between the building blocks 12 and 13 facing each other with a gap A therebetween to close the gap A. A holding member 1 provided on the other frame 13 and holding the cover plate 15
6.

The support member 14 is installed along the longitudinal direction of the gap A on the upper surface of one of the frames 12, and its upper surface forms a downward slope in the direction of the opposing frame 13.

On the other hand, the holding member 16 is also installed along the longitudinal direction of the gap A on the upper surface of the other frame 13, and the engaging portion 16a of the cover plate 15 is located on the gap A side (left side in FIG. 1). and a spring mounting portion 16b that protrudes downward from the engaging portion 16a and enters into the gap A.
is integrally molded. Note that the spring mounting portion 16
b is a frame 13 whose lower end is provided with a holding member 16;
It is bent from the middle so that it approaches.

Then, the above-mentioned supporting member 14 and holding member 1
When installing 6, place nut 1 in the middle part.
A bolt shaft 18 to which a bolt 7 is fixed is installed upright on each frame 12, 13, and a support 20 is fixed to each bolt shaft 18 using another nut 19, and the support member 14
and connection plates 21 and 22 that fit into the inside of the holding member 16, and each of the supports 20 and 2 is used.
Screws 23, 23 passed through from 0 are screwed into the respective connecting plates 21, 22.

Here, the support member 14, the holding member 16, the support body 20, etc. are made into a unit in advance as shown in FIG. Both are connected by partially using the integral support body 20a.

In other words, if it is made into a unit in this way, it is only necessary to fix the supports 20, 20 to the bolt shafts 18, 18 erected on each frame 12, 13 at the construction site, and after that, the floor surface is formed. The bolt shaft 18 and the support body 20 are fixed by the mortar 24.
The floor surface may be formed so as to be continuous with the upper surfaces of the support member 14 and the holding member 16, and the intermediate portion of the integrated support body 20a may be cut out.

The cover plate 15 has a width dimension that can sufficiently close the gap A, and has an engagement groove 15a with a substantially circular cross section on the back surface of the base end, which is the rotation center side. The groove 15a is rotatably engaged with the engagement portion 16a of the aforementioned holding member 16.

Note that the engagement groove 15a and the engagement portion 16a
As shown in FIG. 4, the cover plate 15 has a shape that allows the cover plate 15 to be engaged and detached at a predetermined angle when the cover plate 15 is tilted, and after both sides are engaged, the cover plate 15 is faced The cover plate 15 is attached by rotating in the direction of the body.

Furthermore, a recess 15b for mounting a spring is formed near the base end of the cover plate 15,
A screw 25 passed through this recess 15b from above
The cover plate 15 and the spring attachment part 16b are connected by screwing the screws 26 passed through the lower end of the spring attachment part 16b from below into the upper and lower parts of the coil spring 27 having a tensile action, respectively. 15 is superimposed on the support member 14, and the tip of the cover plate 15 is pressed against the downwardly sloped upper surface of the support member 14 by the tensile action of the coil spring 27. Then, the cover plate 15 installed in this way
, along with the support member 14 and the holding member 16, are in a state of being continuous with the floor surface in substantially one plane.

Note that the reference numeral 28 in FIG.
29 is an elastic joint material fitted between the cover plate 15 and the holding member 16; This is a waterproof sheet whose ends are fitted along the end of the support member 14 and the tip of the spring attachment part 16b.

Next, the action of the expansion joint 11 will be explained.

First, when a horizontal displacement occurs between the frames 12 and 13, the tip of the cover plate 15 slides on the upper surface of the support member 14 to follow the displacement and smooth the floor surface. Keep it connected,
At the same time, gap A is kept closed.

Furthermore, if vertical displacement occurs between the bodies 12 and 13, the cover plate 15 will move at the base end (the engaging portion 16a and the engaging groove 1), as shown in FIG.
5a) to follow the displacement. At this time, the cover plate 15 is constantly subjected to a tensile action by the coil spring 27 provided between it and the spring mounting portion 16b, so that the cover plate 15 maintains a state of pressure contact and locking to the support member 14, and the floor surface is smoothed. They continue to be connected, and at the same time they continue to block space A.

(Embodiment 2) FIG. 5 is a diagram illustrating another embodiment of the expansion joint of this invention, and illustrates a case where the opposing skeletons are floor-to-wall.

Note that the one frame 12 serving as the floor, the support member 14 installed on this frame 12, and the like have the same configuration as in the previous embodiment, so a description thereof will be omitted.

That is, this expansion joint 3
1 is a structure in which a holding member 32 is fixed to the other frame 33, which is a wall, using hole anchors 34 and screws 35, and the proximal end of the cover plate 15 is attached to the engaging portion 32a formed on the holding member 32. The spring mounting portion 32b extending from the holding member 32 into the gap A and the cover plate 15 are connected by a coil spring 27 having a tensile action. By this,
The tip of the cover plate 15 is supported by a support member 14.
It is press-fitted to the downwardly sloping upper surface of the holder.

The spring mounting portion 32b is bent from the middle so that its lower end approaches the frame 33, which is a wall.

The expansion joint 31 configured as described above is also attached to the frame 1 in the same way as in the previous embodiment.
It can follow the horizontal and vertical displacements occurring between 2 and 13, forms substantially one plane with the floor surface, and at the same time always maintains the gap A closed state.

In other words, as explained in each of the above embodiments, the upper surface of the support member 14 that presses and locks the tip of the cover plate 15 forms a downward slope in the direction of the opposing frame. Even if displacement occurs, the upper surface of the cover plate 15 and the floor surface can be smoothly connected.

Further, the coil spring 27 for press-locking the tip of the cover plate 15 to the support member 14 is necessarily present in the gap A, and especially when the frame is between the floor and the wall, the retaining member 32 protrudes from the wall surface, the coil spring 27 closes in the gap A.
It is located near the center of. Furthermore, if one frame is a floor and the other frame is a continuous body of floors and walls, it is necessary to make the cover plate of the floor part and the cover plate of the wall part of the other frame continuous with each other. Therefore, the positions of the coil spring 27 and the spring mounting portions 16b and 32b within the gap A must be aligned. Therefore, as explained in each of the above embodiments, the spring mounting portions 16b, 32b
If the coil spring 27 is installed diagonally by bending it from the middle and tilting it toward the frame 13, 33 where the holding members 16, 32 are installed, the coil spring 27 can be brought to one corner of the gap A. ,
A larger dimension capable of absorbing displacement can be obtained, and when the other frame is a continuous body of the floor and wall, the cover plate of the floor part and the wall part can be accurately continuous.

(Embodiment 3) FIG. 6 is a diagram illustrating still another embodiment of this invention. Note that the drawing partially shows the side of the other frame 33, which is a wall, and a description of how to attach the holding member 32, one frame, etc. is omitted.

That is, this embodiment exemplifies a case where the holding member 32 and the spring mounting part 32c are separate bodies, and the spring mounting part 32c is attached to the side surface of the frame 33 in which the holding member 32 is provided in the gap A. The cover plate 15, which is attached and rotatably engaged with the holding member 32, and the spring attachment portion 32c are connected by a coil spring 27 having a tensile action.

In this way, the holding member 32 and the spring mounting portion 32c
The same effects as in each of the above-mentioned embodiments can be obtained even in a configuration in which these are provided separately.

(Effects of the invention) As explained above, according to the expansion joint of this invention, in an expansion joint that spans building frames facing each other with an appropriate gap and closes the gap, Along the longitudinal direction of the gap in one of the skeletons, a support member is provided that slopes downward in the direction of the opposing skeleton, and along the longitudinal direction of the gap in the other skeleton,
A holding member rotatably holding the base end of the cover plate is provided, and a spring mounting portion provided on the other frame side within the gap is connected to the cover plate by a spring having a tensile action. is superimposed on the support member, and its tip is pressed into contact with the downwardly sloped part of the support member. The upper surface of the expansion joint can be smoothly connected to the upper surface of the expansion joint, and at the same time, durability can be improved by eliminating the conventional cushioning material that fits into the stepped portion. In addition, even if displacement occurs in any direction between both skeletons, the tension of the spring can reliably maintain the closed state of the cover plate.
It is possible to maintain a smooth continuous state between the expansion joint and the floor surface, and it does not cause any obstruction to passersby or trolleys. Moreover, it is different from the conventional expansion joint that clamps both ends of the cover plate. It has the effect of being able to obtain a larger displacement absorption range in comparison.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view explaining one embodiment of the expansion joint of this invention, Fig. 2 is a cross-sectional view explaining the state when displacement occurs between the building blocks, and Fig. 3 is a cross-sectional view explaining an example of the expansion joint of this invention. FIG. 4 is a perspective view illustrating the expansion joint, FIG. 4 is an explanatory diagram showing the state of engagement between the engaging portion and the engaging groove, and FIG. 6 is a sectional view illustrating a case where the spring mounting portion is a separate body in another embodiment of this invention; FIG. 7 is a sectional view illustrating a case where the spring mounting portion is a separate body; It is a sectional view explaining an example. 11, 31... Expansion joint,
12, 13, 33...Structure, 14...Supporting member,
15... Cover plate, 16, 32... Holding member, 16b, 32b, 32c... Spring mounting portion, 2
7...Coil spring (spring), A...Gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A device that straddles opposing building frames with an appropriate distance between them and closes the gap, and the gap in one frame is opposite along the longitudinal direction. A support member is provided that slopes downward in the direction of the frame, and a holding member that rotatably holds the proximal end of the cover plate is provided along the longitudinal direction of the other frame, and A spring mounting portion provided on the body of the frame and the cover plate are connected by a spring having a tensile action, and the cover plate is superimposed on the support member, and its tip is pressed against and latched to the downward slope portion of the support member. An expansion joint that is characterized by (2) The expansion joint according to claim 1, wherein the spring mounting portion is inclined toward the other body frame on which the holding member is provided.