JPH068507U - Expansion joints - Google Patents

Abstract

(57) [Abstract] [Purpose] To eliminate the deformation of the member due to the hyper-elasticity and to secure the stable bearing holding force of the cover plate. [Structure] A pair of frame bases 4 and 4 having sliding locking grooves 7 are fixedly mounted on both the bodies a and a with a gap G therebetween, and sliding projections projecting from both ends of a suspension rod 8. Plural 9, 9 are arranged so as to be slidably fitted in both sliding engagement grooves 7 and inclined. The cover plate 13 is hung on both frame bases 4 and 4 to cover the gap G, and is rotatably connected to the central portion of the suspension rod 8 via the support shaft bolt 10 to suspend the support shaft bolt 10 and the suspension. Coil spring 1 between rods 8
6 is mounted and the cover plate 13 is pressed against both frame bases. A spring connecting plate 12 and a suspension rod 8 which are connected to a support shaft bolt 10.
A plurality of auxiliary coil springs 18, 18 are mounted in between,
It is characterized in that an auxiliary elastic force for pressing the cover plate 13 to both frame bases is obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an expansion joint that covers a strain absorbing gap that appears on the roof or outer wall of a building.

[0002]

[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 for strain absorption is configured as a means to prevent damage to the structure caused by the distortion. Since this gap will also appear on the roof and outer wall surface, the expansion joint is used as a structure that covers this gap so that it can be expanded and narrowed and level difference can be absorbed when it is used. Conventionally, as this expansion joint, as shown in FIG. 4, a frame base 50, 50 is fixedly installed on a wall surface with a gap G for absorbing strain of a building interposed therebetween, and a cover hung on the frame base 50, 50. The plate 51 is slidably installed between the frame bases 50, 50 at both ends so as to be slidable in the direction of the base frame 50. The suspension rod 52 is slidably installed on the suspension rod 52 through the bolt nut 53. The central portion of the cover plate 51 is connected to each other, and the coil spring 54 externally attached to the bolts and nuts 53 elastically urges the cover plate 51 against both base frame bases 50, 50 so that the cover plate 51 can slide in the width direction. The structure that is erected in is generally used.

[0003]

[Problems to be solved by the device]

 However, when the strain absorbing gap is enlarged with the increase in size of the building in recent years, in the above-described conventional configuration, the cover plate 51 is supported against the load and wind pressure that increase as the gap G increases, so that the suspension plate is suspended. It is necessary to increase the spring constant of the coil spring 54 that is elastically biased to maintain the supporting force. As a result, the concentrated load is applied to the bolt / nut 53 insertion portion of the suspension rod 52 shown by the arrow A. Occurs, and not only the part is pulled in and deformed, but also a predetermined hanging force cannot be obtained due to the deformation, and there is a problem that the cover plate 51 shifts or falls.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an expansion joint capable of eliminating deformation of a member and ensuring stable bearing support of a cover plate. .

[0005]

[Means for Solving the Problems]

 The expansion joint according to the present invention is an expansion joint that is provided in a strain absorbing gap that appears on the surface of a building, and is fixed substantially parallel to the edges of both skeletons that face each other across the gap, and on the opposite side. A pair of frame bases that are positioned and extend in the longitudinal direction and that form slide lock grooves, and slide protrusions that are respectively provided at both ends of the slide lock grooves of the frame bases so that they can slide freely. A plurality of suspension rods that are fitted so as to be inclined with respect to the direction in which the gap extends, and the suspension rods are hung on both frame bases to cover the gaps, and the center portion of the suspension rod and the shaft member A main suspending unit that is rotatably connected and is mounted between the shaft and the suspension rod to press the cover plate to both frame bases via a shaft member, and a shaft of the main suspending unit. The gist of the present invention is that the member is symmetrical and is composed of a member that is connected to the shaft member and a plurality of auxiliary suspending means that are mounted between suspension rods. A.

[0006]

[Action]

 According to the above configuration, the elastic force of the main suspending means and the auxiliary suspending means formed in the central portion of the suspension rod pulls the cover plate through the shaft member to elastically urge the strain between the frame bases. A cover plate that covers the absorption gap is suspended. When the strain absorbing gap is expanded or contracted, the sliding protrusions provided at both ends of the suspension rod slide in the groove direction with respect to the sliding engagement groove of the frame base. It absorbs when the tilting angle of the suspension rod changes.

At this time, the cover plate is suspended by the elastic force of a plurality of coil springs composed of the main suspending means and the auxiliary suspending means, and the supporting force is determined by the sum of the elastic forces of all springs. As a result, the width of the strain absorbing gap is increased, and the total sum of all spring elastic forces is increased with respect to the load of the cover plate itself or the increase in the bearing force generated by the wind pressure applied to the cover plate. However, it is possible to diffuse the response to the suspension rod. Therefore, the problem that the central portion of the suspension rod is deformed by the excessive elasticity of the spring does not occur.

[0008]

【Example】

 An embodiment of a roof expansion joint according to the present invention will be described below with reference to FIGS.

Reference numerals 1 and 1 are base frames made of a steel frame or an aluminum mold member having a groove-shaped cross section fixed to the opposing surfaces of the roof parapets a and a of the two bodies, which are opposed to each other with a strain absorbing gap G interposed therebetween. A refractory belt bracket 3 for gripping and fixing the edges of the refractory belt 2 is fixedly provided on the opposing surfaces of the two base frames 1 and 1.

On each upper surface of both parapets a, a, frame bases 4 and 4 having a substantially U-shaped cross section made of steel frame, stainless steel or aluminum mold material are bolted so that they face each other. , 1 fixed to extend in the direction of the gap G. The both frame bases 4 and 4 are bent in opposite directions from a lower frame part 4a fixed to the base frame 1 by bolts 5, a side frame part 4b rising upward, and an upper edge of the side frame part 4b. The sliding contact frame portion 4c, and the locking edge 6 bent downward from the inner end edge of the sliding contact frame portion 4c, and the sliding locking groove extending in the direction of the frame base 4 on the lower surface of the sliding contact frame portion 4c. 7 is configured.

Further, reference numeral 8 indicates that sliding projections 9 and 9 projecting from both ends are slidably fitted in the sliding engagement grooves 7 and 7 of the frame bases 4 and 4 facing each other. The suspension rods 8 are arranged at appropriate intervals in the extending direction of the base frame base 4 so that each of the suspension rods 8 has an inclination angle of about 45 degrees in normal times.

A through hole 11 for inserting the support shaft bolt 10 is bored in the center of the suspension rod 8, and after the support shaft bolt 10 erected at the center of the spring connecting plate 12 is inserted therethrough, Both of the frame bases 4 and 4 are rotatably inserted into a through hole 14 formed at a central position of the cover plate 13 suspended on the sliding contact frame portions 4c and 4c, and fastened with a nut 15. . Further, the cover plate 13 is externally inserted on the support shaft bolt 10, and is mounted between the spring connecting plate 12 and the suspension rod 8 and a coil spring 16 and a suspension spring disposed at a symmetrical position to the support shaft bolt 10. The suspension connecting plate is externally inserted into a plurality of bolts and nuts 17 (the embodiment shows the case of two) in which the suspension rod 8 and the spring connecting plate 12 are axially slidably connected to each other, and the spring connecting plate 12 is attached. 12 and a suspension rod 8 mounted between the suspension rod 8 and the suspension coil 8 to provide a predetermined elastic force (the coil spring 16 and the auxiliary coil) on the slidable contact frame portions 4c and 4c. It is the sum of springs 18 and 18) and is elastically pressed.

The cover plate 13 constitutes a cover cover 22 by a corrugated plate-like reinforcing plate 20 fixed to the upper surface and a covering plate 21 fixedly provided on the upper surface of the reinforcing plate, and at the same time, is made of neoprene rubber or the like. The water return sealing members 23, 23 made of an elastic material are fixed to the side frame portions 4b, 4b of the frame bases 4, 4, and the lip portions are in close contact with the sliding surface of the cover plate 13.

Reference numerals 24 and 24 denote waterproof gutter mounting brackets fixed to the base frame 1 by the bolts 5, respectively, and have edges of the waterproof gutter 25 made of elastic material such as rubber. It is fixedly supported and has a waterproof structure between both base frames 1 and 1.

In the expansion joint having the above structure, the cover plate 13 is elastically urged by the elastic force of the suspending bar group 19 formed in the central portion of the suspension rod 8 via the support shaft bolt 10, and both frames are supported. A covering cover 22 that covers the strain absorbing gap G is suspended between the bases 4 and 4. When the strain absorbing gap G is expanded or contracted or displaced, the sliding protrusions 9 and 9 projecting from both ends of the suspension rod 8 with respect to the sliding engagement grooves 7 and 7 of the frame bases 4 and 4. And slides in the direction of the groove to change the tilting angle of the suspension rod 8 to absorb.

At this time, according to the structure of the present invention, the elastic force of the coil spring 16 and the auxiliary coil springs 18 and 18 forming the hanging bar group 19 suspends the covering cover 22 including the cover plate 13. Since the structure is such that the supporting force is obtained by the sum of the elastic forces of all springs, the width of the strain absorbing gap G becomes large, and is caused by the load of the cover 22 itself or the wind pressure received by the cover 22. As the bearing force increases, the supporting force for the suspension rod 8 can be diffused to diffuse the stress. Therefore, it is possible to solve the problem that the central portion of the suspension rod 8 is deformed by the super-elastic force of the spring.

In the above description of the embodiment, the number of auxiliary coil springs is two, but the central support shaft bolt is used as the axis of symmetry, and the number of auxiliary coil springs is increased as necessary to make it larger. It is possible to construct an expansion joint with a load cover.

[0018]

[Effect of device]

 As described above, in the expansion joint according to the present invention, the cover plate hung on the frame base can be rotated by the coil spring and suspended by the elastic force with respect to the suspension rod that connects the gap so as to expand and contract. In the structure to be installed, the structure of the suspending portion is composed of a group of suspending rods composed of a plurality of coil springs arranged in the direction of the suspending rod, and the stress applied to the suspending rod by the springs is dispersed, It is possible to solve the problem that the central part of the suspension rod is deformed by the excessive elastic force of the spring, and it is possible to increase the bearing force caused by the load of the cover itself or the wind pressure received by the cover. Since it is possible to obtain a sufficient supporting force, it can be applied to a building with a large strain absorbing gap. Further, according to the configuration of the present invention, even if the auxiliary coil springs are increased to increase the supporting force, it is only necessary to tighten the central support shaft bolt at the time of construction on site, which increases the work process on site. In addition, it has features such as workability not inferior to the conventional one, and the practical effect after the implementation of the present invention is extremely large.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of an expansion joint according to the present invention.

FIG. 2 is a schematic plan view of the expansion joint with a covering cover removed.

FIG. 3 is a perspective view of a main part of the expansion joint.

FIG. 4 is a vertical sectional view showing a conventional expansion joint.

[Explanation of symbols]

 a Roof parapet 1 Base frame 4 Frame base 6 Locking edge 7 Sliding lock groove 9 Sliding protrusion 8 Suspension rod 10 Spindle bolt 12 Spring connecting plate 13 Cover plate 15 Nut 16 Coil spring 17 Bolt nut 18 Auxiliary Coil spring 19 Hanging bar group 22 Covering cover 23 Water repelling seal member

Claims (1)

[Scope of utility model registration request] 1. An expansion joint to be installed in a strain absorbing gap appearing on the surface of a building, which is fixed substantially parallel to the edges of the two skeletons facing each other across the gap and is located on the opposite side. A pair of frame bases forming a slide locking groove extending in the longitudinal direction, and sliding projections provided at both ends are slidably loosely fitted in the slide locking grooves of both frame bases, A plurality of suspension rods arranged so as to be inclined with respect to the direction in which the gap extends, and the suspension rods are hung from the frame bases to cover the gaps and are rotatable via the central portion of the suspension rods and a shaft member. And a main suspending means which is mounted between the shaft and the suspension rod and presses the cover plates to both frame bases through the shaft member, and the shaft member of the main suspending means is symmetrical. An expansion joint, comprising: a connecting member with the shaft member; and a plurality of auxiliary suspending means mounted elastically between suspension rods.