JPH068550B2 - Expansion joints - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an expansion joint for covering a gap between a driving body appearing on a wall surface of a building.

[Prior Art] Since a structure is constantly distorted due to expansion and contraction due to temperature changes, unequal subsidence, and earthquakes, etc., a gap structure is constructed as a means for preventing destruction of the structure caused by the distortion. Since this gap appears on the wall surface of the expansion joint, an expansion joint having a structure that covers the gap so that it can be expanded and narrowed and can absorb the level difference is used. As an expansion joint of this type, as shown in FIG. 5, the frame bases 50, 50 are fixedly mounted on the wall surface with the gap G of the building interposed therebetween, and the covering plate 51 hung on the frame bases 50, 50. The frame base 5
Generally, a structure in which a widthwise slidable member is fixedly mounted via a suspending member 52 that is stretchably installed between 0 and 50 is generally used.

[Problems to be Solved by the Invention] However, in recent years, the strain absorbing gap has become larger with the increase in size of a building. In the above-described conventional configuration, when the gap G becomes larger, the gap becomes about two. Since the cover plate 51 that requires a double width is provided on the wall surface, the expansion joint has a problem that the front structure divides the design of the building. Further, when the gap G becomes large, the strain of the building becomes large, the allowable degree of freedom required for the expansion joint becomes large, and at the same time, the strength against wind pressure and the like is particularly required.

The present invention has been made in view of the above problems, and a novel structure that does not make the front structure wider than the gap width, can sufficiently cope with a large gap, and has sufficient strength against wind pressure and the like. It is an object of the present invention to provide an expansion joint having a structure.

[Means for Solving the Problems] The expansion joint according to the present invention is an expansion joint provided in a strain absorbing gap appearing in a wall portion of a building, and is an outer wall of both precursors sandwiching the gap. A pair of support base frames fixed to the edge facing surfaces and having a hinge groove extending in the longitudinal direction on the facing surfaces, and a columnar hinge shaft pivotably attached to the hinge grooves of the both support base frames. In addition, a pair of cover plate support frames having guide grooves formed in the longitudinal direction and both ends of the cover plate support frames are slidably connected to the guide grooves of the cover plate support frames, and the positioning is performed by connecting both cover plate support frames. A member and a pair of cover plates having outer edges fixed to both cover plate supporting frames and extending in the gap direction, and projecting sliding ribs extending laterally at appropriate intervals on the back surface of the member. , With both cover plates Sliding notches formed on both side edges are slidably engaged in the width direction, and a central portion is composed of a sliding plate pivotally attached to the center of the positioning member, and The idea is to cover the gap.

[Operation] According to the above configuration, the sliding plate is allowed to slide in the width direction by the fitting of the sliding notch and the sliding rib to support the load on both cover plates, and is pivotally attached to the center of the positioning member. Therefore, it is always located in the center of the gap. Since the gap is covered with the two cover plates and the sliding plate in this way, the front structure of the expansion joint does not become wider than the gap width. In addition, since the sliding plate is attached to the positioning rod that is connected between both cover plate support frames, it can be reinforced and supported in the surface direction.
It has sufficient strength against wind pressure.

[Embodiment] An embodiment according to the present invention will be described below with reference to FIGS. 1 to 3.

Reference numerals 1 and 1 are support base frames made of an aluminum mold material that are fixed to the outer wall facing surfaces of the two frames a and a so as to face each other across the gap G, and both substrate portions 2 have a C-shaped cross section extending in the longitudinal direction. A hinge groove 3 is formed, and a water blocking trough fitting port 5 extending in the longitudinal direction is integrally formed on the inner edge of the base plate portion 2. The hinge shaft groove 3 has a hinge insertion notch 4. It consists of the composition.

Reference numerals 6 and 6 respectively denote cover plate supporting frames made of aluminum, which are pivotally attached to the supporting base frame 1 so as to be swingable (arrow A). Cover plate mounting ribs 7 are provided on the front edge and rear plate edges are provided on the rear edge. The guide groove 8 is formed so as to extend in the longitudinal direction, and the columnar hinge shaft projects obliquely rearward from the rear edge and is rotatably inserted into the hinge shaft groove 3 at the end edge of the hinge rib 9. 10, the hinge rib 9 is left uncut in a width corresponding to the hinge insertion notch 4, and the hinge shaft 10 is inserted into the hinge shaft groove 3 so as to be swingable in the range of arrow A. It is made up of a shaft. Reference numerals 11 and 11 respectively denote cover plates whose outer edges are fixed to the cover plate mounting ribs 7 of the cover plate supporting frame 6 and project in the gap G direction. Each cover plate has a length of about 1/3 of the width of the gap G. In addition to forming the edge ribs 12 and 12 on the inner edge, sliding ribs 13 extending laterally from the edge rib 12 to the position of the cover plate supporting frame 6 at the mounting end are vertically fixed at appropriate intervals. Become. Further, reference numeral 14 is a sliding plate suspended from the back side of the cover plates 11 and 11 and has a locking rib 15 having a length of about 2/3 of the width of the gap G and bent and formed at both edges. , 15 have sliding notches 16, 1 corresponding to the pitch of the sliding ribs 13, respectively.
6, and the sliding notches 16 are slidably locked to the sliding ribs 13 in the directions of arrows B, respectively. Reference numeral 17 is a positioning member for the sliding plate 14, and the connecting rods 20 and 21 are crossed in an X shape with respect to a pin shaft 19 erected on a bracket 18 fixed to the center of the sliding plate 14, respectively. A roller 2 which is rotatably pivoted at its center and is rotatably pivoted at both ends of both connecting rods 20 and 21.
3 is slidably fitted in the guide grooves 8 of both cover plate support frames 6 and 6 in the direction of arrow C, and a slide plate 14 is carried between both cover plate support frames 6 and 6.

Reference numeral 24 is a waterproof gutter provided between the waterproof gutter fitting ports 5 and 5 of both the supporting base frames 1 and 1, and 25 is a suitable filling gall between the vehicle a and the cover plate supporting frame 6. It is an elastic cogging agent.

According to the above configuration, when the gap G between the two driving bodies a and a is expanded or contracted, the cover plates 11 and 11 approach or are separated via the support base frame 1 and the cover plate support frame 6. However,
A sliding plate 14 is slidable on the cover plates 11, 11 so that a sliding notch 16 can slide on a sliding rib 13 (arrow B).
Since it is supported and suspended at the above position, slippage occurs at this portion to cope with expansion and contraction of the gap G. Since the sliding plate 14 has a structure in which the rollers 23 having both the connecting rods 20 and 21 of the positioning member 17 axially provided at both ends thereof are fitted into the guide grooves 8 of the cover plate supporting frames 6 and 6, there is always a gap. It is supported at the center of G.

Further, since the cover plate support frame 6 swings in the direction of arrow A due to the hinge structure in which the cover plate support frame 6 is a combination of the hinge shaft groove 3 and the hinge shaft 10, both cover plates 11,
It is possible to absorb the deviation of the surface a.

In the structure of the above-described embodiment, the positioning member 17 of the sliding plate 14 is composed of the connecting rods 20 and 21 intersecting in an X shape. However, as shown in FIG. Can also be implemented with a structure in which the roller 23 pivotally attached to the pin shaft 19 of the sliding plate 14 and the rollers 23 axially attached to both ends are fitted into the guide grooves 8 of the cover plate support frames 6 and 6. , The sliding plate 14 is always supported in the center of the gap G.

[Advantages of the Invention] As described above, the expansion joint according to the present invention has a structure in which the gap is covered by the cover plate and the sliding plate,
Since the covering agent is not formed outside the gap, the width of the expansion joint that appears in front does not become wider than the gap width,
It has a feature that the influence of the expansion joint on the design of the building can be reduced, and has a sufficient strength against wind pressure with an allowable degree of freedom that can sufficiently cope with a large gap. The practical effect of is extremely large.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment of an expansion joint according to the present invention, FIG. 2 is a rear view of the same, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. FIG. 5 is a rear view showing another embodiment of the member, and FIG. 5 is a vertical sectional view showing a conventional expansion joint. DESCRIPTION OF SYMBOLS 1 ... Support base frame, 3 ... Hinge groove, 3 ... Hinge shaft groove, 6 ... Cover plate support frame, 7 ... Cover plate mounting rib, 8
... guide groove, 9 ... hinge rib, 10 ... hinge shaft, 11 ...
Cover plate, 13 ... Sliding rib, 14 ... Sliding plate, 15 ... Locking rib, 16 ... Sliding notch, 17 ... Positioning member, 19 ... Pin shaft, 20, 21 ... Continuous, 23 ... Roller.

Claims (1)

[Claims] 1. In an expansion joint provided in a strain absorbing gap appearing in a wall of a building, the joint is fixed to the facing surface of the outer wall edge of both the skeletons facing each other across the gap, and to the facing surface. A pair of support base frames that form hinge grooves extending in the longitudinal direction, and a pair of support base frames that pivotally mount cylindrical hinge shafts in the hinge grooves of both the support base frames and that form guide grooves in the longitudinal direction. The cover plate supporting frame, a positioning member that slidably and continuously connects both ends to the guide grooves of the both cover plate supporting frames, and connects the both cover plate supporting frames, and outer ends of the both cover plate supporting frames. A pair of cover plates having fixed edges and extending in the gap direction and projecting sliding ribs extending laterally at appropriate intervals on the back surface of the member, and sliding formed on the both cover plates and both side edges. Sliding the notch in the width direction An expansion joint that is engaged with the center of the positioning member and has a central portion pivotally rotatably attached to the center of the positioning member, and covers a gap between the skeletons. .