JP4017546B2 - Expansion joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint that is installed in a state where it is easy to absorb the fluctuation in a building facing with a gap, and the gap is well closed.
[0002]
[Prior art]
Conventionally, a cover material covering a gap between opposing buildings with a gap is attached to a support member provided in one building via a holder so that the spring member is fixed to the support portion side of the holder. The cover member is arranged to be fixed to the building, and the rotating portion is engaged with the engagement receiving portion of the holder to urge the cover material so that the end portion is pressed against the building. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP 2000-265576 A (2nd to 3rd pages, FIGS. 1 and 2)
[0004]
However, in the structure in which the spring member is arranged on the support portion side of the holder and the rotation side of the holder is suppressed, when the fluctuation that widens the gap of the building occurs, the rotation end of the cover material is detached from the building. In this case, the cover material falls into the gap and loses the function of closing, so that there is a problem that the range that can be closed is small.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems, and even if the fluctuation that widens the gap of the building occurs and the rotating end of the cover material is detached from the building, the cover material is supported by the spring member fixture. It is an object of the present invention to provide an expansion joint in which the gap closing due to the above is maintained and the range capable of being closed is increased.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the expansion joint according to the present invention includes a cover member that covers a gap between opposing buildings via a holder that is rotatably provided around a circular axis on a support member provided in one building. In the expansion joint attached in this manner, a sliding recess is formed on the upper surface of the holder along the width direction of the gap, and the other building side has a coil portion and an extending portion extending from the coil portion. place the spring member, the other fixed to the building, the other elongation portion causes the engaged sliding recess of holder its ends the spring the cover member by one of the elongation portion fitting of the spring member urges to be pressed into the building member, movably when varied as the building structures is expanded, the end of the other building side of the holder and the cover member is beyond the fitting Characterized in that the.
[0007]
The holder may be formed so as to be separable.
[0008]
Moreover, you may form so that two sets of a spring member may make a pair from the said coil part and the extension part extended to both, and may act on one holder.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The expansion joint according to the present invention will be described below with reference to the drawings.
[0010]
The expansion joint denoted by reference numeral 1 in FIG. 1 is provided with a cover member 4 that covers the gap S between the building 2 and the building 3 facing each other with a gap S between the support member 5 provided in one building 2 and a holder. 6 to be pivotably attached. Then, after the tip 6a of the holder 6, the spring member 7 having the coil portion 7a and the extending portions 7b and 7c extending to both of them, the one extending portion 7c and the coil portion 7a are located in the gap S. The other extending portion 7 b is arranged so as to ride on the building 3, and one extending portion 7 b of the spring member 7 is fixed to the building 3 by the fixture 8, and the other extending portion 7 c is formed in the holder 6. Engaged with the sliding recess 9 is biased so that the bent portion of the cover material 4 is pressed against the building 3 by the spring member 7.
[0011]
The cover material 4 has a width sufficient to close the gap S between the buildings 2 and 3 and is formed into a long object as shown in part in FIG. As shown in FIG. 2, pinching grooves 10 are provided at the ends of the bent portions 4a, and weather strips that elastically contact the building 2 and the building 3 are provided. 11 is supported.
[0012]
Further, the gap S between the building 2 and the building 3 needs to be stopped. For this reason, on the opening side of the gap S, a water stop plate 13 supported at both ends by a support 12 attached to the building 2 and the building 3 is stretched, and rain water or the like enters the gap S by the water stop plate 13. Do not.
[0013]
The support member 5 that rotatably supports the holder 6 is attached to one building 2 with a screw 15 penetrating the attachment hole 14, and a circular shaft 16 is projected in a right angle on the front side of the outer end in FIG. Provided as shown, a circular groove 16 provided in the holder 6 is engaged with a circular groove described later.
[0014]
Holder 6, a width that fits both folded portions 4 in a cover member 4, the width is formed as part length shown in FIG. 3, the rear side of the tip 6a, building 3 projects obliquely outward An abutting piece 17 is provided, and a cutout groove 18 that engages with the circular shaft 16 of the support member 5 is provided on the rear side of the base end 6b. Further, an intermediate portion between the tip end 6a and the base end 6b is provided. Is provided with the above-described sliding recess 9 which is recessed from the distal end 6a and the base end 6b to slide the extending portion 7c of the spring member 7.
[0015]
Moreover, the holder 6 attaches a required number to the back side of the elongate cover material 4 with a predetermined space | interval, The attachment hole 19 is opened to the cover material 4 as shown in FIG. The cover 21 and the holder 6 are joined by tightening the screw 21 into the screw hole 20 formed in the pass holder 6.
[0016]
When the gap S between the building 2 and the building 3 is large, the holder 6 has a first holder 6-1 and a second holder 6 from the middle between the distal end 6a and the proximal end 6b as shown in FIG. -2 and divided. And the joint part 22 is provided in a division | segmentation part, and the 1st holder 6-1 and the 2nd holder 6-2 are connected by this joint part 22, and the holder 6 of the width | variety adapted to the big clearance S is obtained.
[0017]
The joint portion 22 between the first holder 6-1 and the second holder 6-2 is provided with, for example, an L-shaped piece 23 that is slightly outside the inner end edge at the lower portion of the inner end of the second holder 6-2. Then, a receiving groove 24 parallel to the sliding recess 9 is formed, and a triangular protrusion 25 is projected downward from the upper opening edge of the receiving groove 24. Further, an insertion piece 26 that fits into the receiving groove 24 projects from the lower portion of the inner end of the first holder 6-1, and the groove that engages the triangular protrusion 25 on the upper side of the base of the insertion piece 26. A recess 27 having a trapezoidal shape or a semicircular shape is formed on the lower side of the distal end of the insertion piece 26, that is, on the portion corresponding to the upper corner 28 of the L-shaped piece 23.
[0018]
In order to connect the first holder 6-1 and the second holder 6-2 with the joint portion 22 having the above-described configuration, the first holder 6-1 is tilted downward as shown by a chain line in FIG. Then, the recess 29 provided on the back side of the insertion piece 26 is hung on the upper corner 28 of the L-shaped piece 23, and the first holder 6-1 is horizontally raised as shown by the solid line in FIG. Then, the triangular protrusion 25 on the second holder 6-2 side is engaged with the groove 27 of the first holder 6-1, the tip edge of the insertion piece 26 is engaged with the inner edge of the receiving groove 24, and the first The first holder 6-1 and the second holder 6-2 are connected so as not to be separated even if a tensile force is applied.
[0019]
As shown in FIG. 5, the spring member 7 is formed by rounding spring steel a plurality of times to form a central coil portion 7 a, extending from the outside of this coil portion 7 a to one side, and extending from the inside to the other side. 7c has a configuration in which one extending portion 7b side is connected by a connecting piece 7d so that the two are paired, and the holder 6 can be easily pressed and averaged. Become.
[0020]
The mounting member 8 of the spring member 7 is divided into a seat plate 30 and a holding plate 31, and they are overlapped with each other, and one extending portion 7 b of the spring member 7 is sandwiched between them. The mounting holes 32 and 33 opened at 31 are tightened to the building 3 through screws 34 to fix the extension 7 b of the spring member 7 to the building 3.
[0021]
As described above, when the screw 34 for fixing the seat plate 30 and the holding plate 31 to the building 3 is a round head, a flat round head or the like, the head of the screw 34 is moved when the contact piece 17 of the holder 6 moves. The movement is hindered. Therefore, the head of the screw 34 is made of a countersunk head so that the contact piece 17 cannot be used, or a notch 35 is provided at the lower center of the contact piece 17 as shown in FIGS. Do not use round heads or flat heads.
[0022]
The seat plate 30 of the fixture 8 has a raised receiving edge 36 for abutting the holding plate 31 on the outer end, and this receiving edge 36 is the tip of the contact piece 17 of the holder 6 or the bent portion 4a of the cover material. 5 moves to the contact piece 17, and as shown in FIG. 5, it is formed in an arc shape or a triangular shape having a triangular shape or the like, and the tip of the contact piece 17 and the bent portion 4 a is the receiving edge 36. Over the road without great resistance so that it can move freely. Further, the seat plate 30 is formed shorter than the holding plate 31, but it may be formed to have the same length as the holding plate 31.
[0023]
As shown in FIG. 5, the holding plate 31 of the fixture 8 forms a stepped portion 37 in which the extended portion 7 b of the spring member 7 is accommodated on the upper side and the lower side. Then, as shown in FIG. 6, the extending portion 7 b of the spring member 7 is placed on the seat plate 30, the restraining plate 31 is stacked on the seat plate 30, and the seat plate 30 and the restraining plate 31 are attached with screws 34. When attached to the building 3, the extended portion 7 b of the spring member 7 is sandwiched between the stepped portion 37 and the seat plate 30 so as to be firmly fixed to the building 3.
[0024]
As described above, the attachment 8 of the spring member 7 may be integrally formed without forming the seat plate 30 and the holding plate 31 separately.
[0025]
In the expansion joint 1 shown in the embodiment, when the building 2 and the building 3 holding the gap S as shown in FIG. 1 fluctuate due to an earthquake or the like, and the gap S becomes narrow as shown in FIG. One extending portion 7 c of the spring member 7 slides toward the base end 6 b side while pressurizing the sliding recess 9 of the holder 6. For this reason, the cover material 4 is in a state of covering the building 3 side deeply, so that both the bent portions 4a are in contact with the building 2 and the building 3 so as to reliably close the gap S.
[0026]
When the building 2 and the building 3 fluctuate due to an earthquake or the like and the gap S is widened as shown in FIG. 8, one extending portion 7 c of the spring member 7 pressurizes the sliding recess 9 of the holder 6. While sliding to the tip 6a side. In this case, as shown in FIG. 8, even when one bent portion 4 a of the cover material 4 is in a state of being detached from the building 3, the fixture 8 of the spring member 7 protrudes into the gap S, and the cover material 4 is bent. Since the portion 4a is supported, the cover member 4 is held outside the gap S and reliably performs the function of closing the gap.
[0027]
【The invention's effect】
According to the invention of claim 1, even when the gap of the building changes due to an earthquake or the like, and the end of the cover material comes off from one of the buildings, the spring member fixture supports the cover material. The closed state of the gap by the cover material is maintained, and there is an effect of increasing the range in which the gap can be closed by the cover material.
[0028]
According to the invention of claim 2, since the holder is divided and formed, a holder suitable for holding a cover material capable of closing a large gap can be easily configured even if the divided one is a small width holder.
[0029]
According to the invention of claim 3, since the pair of spring members can be attached to the holder, the pressing force necessary for the holder is applied in a balanced manner with a small spring member, and the end of the cover material is always applied to the building reliably. It can be touched.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an expansion joint.
FIG. 2 is a perspective view showing a part of the cover material used in the above.
FIG. 3 is a perspective view showing a holder and its support member.
4 (a) and 4 (b) are an exploded perspective view and a partially assembled view of a two-part holder.
FIG. 5 is a perspective view showing a spring member and its fixture.
FIG. 6 is a perspective view of a part of the expansion joint with the cover material removed.
FIG. 7 is a cross-sectional view showing the expansion joint in a state where the building is changed so that the gap is narrowed.
FIG. 8 is a cross-sectional view showing the expansion joint in a state where the building is changed so as to widen the gap.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Expansion joint S Space | gap 2, 3 Building 4 Cover material 5 Support member 6 Holder 7 Spring member 7a Coil part 7b Extension part 7c Extension part 8 Attachment 9 Sliding recessed part

Claims (3)

In an expansion joint in which a cover material covering a gap between opposing buildings is attached to a support member provided in one building via a holder that is rotatable about a circular axis ,
A sliding recess is formed on the upper surface of the holder along the width direction of the gap,
The other building side, place the spring member having a stretch portion extending to both from the coil portion and the coil portion, and fixed to said other building one of the elongation portion of the spring member by fitting, the other Engaging the extending portion with the sliding recess of the holder and biasing the cover material so that the end portion is pressed against the building by a spring member,
An expansion joint according to claim 1, wherein when the building frame changes so as to spread, the end of the holder and the cover material on the other building side can be moved beyond the fixture.   The expansion joint according to claim 1, wherein the holder is formed to be separable. Expansion joint according to claim 1 or claim 2 two sets of more spring members and extending portions extend out coil portion and its both characterized by being formed so as to act to one of the holders in pairs.

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