JP2553920Y2 - Expansion joint device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint device provided between spaces of adjacent buildings with a space therebetween.

[0002]

2. Description of the Related Art A typical prior art is disclosed in, for example, Japanese Utility Model Application Laid-open No. Hei.
This prior art is shown in simplified form in the horizontal sectional view of FIG. Two concrete frames 1a and 1b, which are buildings, are provided adjacent to each other with a space 3 interposed therebetween, and an expansion joint device 4 is provided so as to close this space 3. Edge members 6a, 6b are fixed to the respective frames 1a, 1b by anchor bolts 5a, 5b. The edge members 6a and 6b are formed with protrusions 8a and 8b that rise toward the outside 7 and spring receiving portions 9a and 9b that project toward the space 3 in directions approaching each other. Compression coil springs 10a, 10b are supported on the spring receiving portions 9a, 9b, and bolts 1 are attached to the compression coil springs 10a, 10b.
1a, 11b are inserted, and nuts 13a, 13b and spring receiving pieces 14a, which are screwed to the bolts 11a, 11b, respectively.
The compression coil springs 10a and 10b are prevented from being pulled out by 14b. Sliding pieces 15a, 15b are mounted on the heads of the bolts 11a, 11b, respectively.
b is slidably supported along its longitudinal direction in a state fitted in a holder 16 having a substantially C-shaped cross section perpendicular to the axis. A cover plate 17 made of, for example, aluminum is fixed to the holder 16 by a screw or the like. When each of the frames 1a and 1b is displaced due to an earthquake or uneven settlement of the ground, the displacement is allowed. Intrusion of wind and rain from the outside 7 into the space 3 is prevented.

[0003]

In such prior art, as shown in FIG. 7, when each of the frames 1a, 1b is relatively displaced in the front-rear direction A1, A2, at least one of the compression coil springs 10b is moved. Is compressed to such an extent that it can no longer be shrunk, and beyond this state, each frame 1a,
1b further displaces in the front-rear direction A1, A2, the edge material 6
b, an excessive force acts on the holder 16 and the cover plate 17 to cause a problem of deformation or breakage.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an expansion joint device capable of maintaining a state in which the space between the frames is closed and allowing a larger relative longitudinal displacement between the frames. It is to provide.

[0005]

According to the present invention, there is provided a cover plate provided between two adjacent frames with a space therebetween, a spring receiving member disposed inside the cover plate, and a spring receiving member disposed close to the spring receiving member. A first spring for applying a spring force to the cover plate in a direction in which the spring support member extends, an expandable link means connected to the spring receiving member inside the cover plate, and a spring biasing the spring receiving member inward. To apply a spring force in the contracting direction to the link means.
A spring, wherein the cover plate is movable in a direction approaching and separating from the spring receiving member, and a spring force of the first spring is set smaller than a spring force of the second spring. Is relatively displaced, the first spring is displaced and the cover plate is moved with respect to the spring receiving member, and then the second spring is displaced to extend the link means, whereby the link means is extended. An expansion joint device wherein the cover plate is moved together with a spring receiving member.

[0006]

According to the present invention, a cover plate is provided between two adjacent frames with a space therebetween. A spring receiving member is disposed inside the cover plate, and a first spring for applying a spring force in a direction approaching the spring receiving member is provided on the cover plate. Extendable link means is connected to the spring receiving member, and a second spring for applying a spring force in a contracting direction to the link means is provided. And
The cover plate is movable toward and away from the spring receiving member, and the spring force of the first spring is set smaller than the spring force of the second spring. Accordingly, when the adjacent frame is relatively displaced, the first spring is displaced to move the cover plate with respect to the spring receiving member, and then the second spring is displaced to extend the link means. The cover plate is moved together with the receiving member,
Thus, greater displacement between the frames is allowed with the cover plate spring biased inward.

[0007]

FIG. 1 is a horizontal sectional view of an expansion joint device according to the present invention. A substantially L-shaped stainless steel rim member 24a, 24b is fixed to a concrete frame 23a, 23b of a building or the like adjacent to the building 21 with a space 21 from the outside 26 side by anchor bolts 25a, 25b, respectively. . The edge members 24a, 24b are provided with mounting portions 28a, 28b extending along the outer surfaces 27a, 27b of the frames 23a, 23b facing the outside 26, and with the frames 23a, 23b.
Extending from the outer surfaces 27a, 27b toward the interior 30 along the mutually facing inner surfaces 29a, 29b.
1a, 31b, and support portions 33a, 33b, which are bent at substantially right angles to the extending portions 31a, 31b, are connected to each other, and extend into the space 21 in directions approaching each other. Each support part 3
3a, 33b, first and second spring means 35a,
35b; 36a and 36b are provided so as to spring-bias the aluminum cover plate 37 that closes the space 21 toward the inside 30 between the frame bodies 23a and 23b.

FIG. 2 shows the first and second spring means 35a, 3
FIG. 3 is a cross-sectional view showing the configuration of 6a viewed from the right side of FIG. 1, and FIG. 3 is a perspective view of the vicinity of first and second spring means 35a and 36a. The first and second spring means 35b and 36b provided on the other body 23b are provided with a first
And since it is comprised similarly to 35a and 36a of a 2nd spring means, description is abbreviate | omitted avoiding duplication.

The first spring means 35a includes a sliding piece 39a which is slidably fitted along a longitudinal direction of the holder 38 having a substantially C-shaped cross section perpendicular to the axis to which the cover plate 37 is fixed. And a bolt 40a for inserting the sliding piece 39a, and a compression coil spring 4 attached to the bolt 40a.
1a (constituting the first spring) and the compression coil spring 4
A spring receiving member 43a with which one end of 1a contacts, and a spring receiving ring 44a with which the other end of the compression coil spring 41a contacts.
And a nut 46a screwed to the bolt 40a.

The spring receiving member 43a has a pair of side walls 47, 48 formed in parallel with a space therebetween, and a connecting portion 49 which is curved in an arc shape and connects the side walls 47, 48. A lever 50a is interposed between the connecting portion 49 and the holder 38. The lever 50a has a bolt insertion hole 51a through which the shaft of the bolt 40a is inserted. The connecting portion 49 has an insertion hole 53a through which the bolt 40a is inserted. By the spring force from the compression coil spring 41a through the bolt 40a passing through the bolt insertion holes 51a and 53a, the holder 3
The lever 8a and the lever 50a are locked while being resiliently pressed against the spring receiving member 43a.

The second spring means 36a is connected to the edge member 24.
a, a substantially C-shaped retaining member 56a fixed to the supporting portion 33a, a bracket 57a retained by the retaining member 56a, and link means for connecting the bracket 57a to the spring receiving member 43a. 58a and a plurality of tension coil springs 59a (constituting a second spring) for urging the spring receiving member 43a in a direction approaching the bracket 57a.

The link means 58a is connected to the spring receiving member 43a at one longitudinal end by a pin 60a and at the other longitudinal end by pins 61a and 63a.
2 and a connecting member 66a comprising link members 64a and 65a pin-connected to the bracket 57a, respectively.
At right angles to each other and perpendicularly to the plane of the drawing. One end of the tension coil spring 59a is locked to the link member 64a near the pin 61a, and the other end is connected to the link member 65a by the pin 6a.
Locked near 3a. Such a tension coil spring 59
Due to a, the link members 64a and 65a are spring-biased in directions approaching each other. These tension coil springs 5
9a is provided in four in the present embodiment, and the tension coil spring 41a is one. The spring force F1 of these four tension coil springs 59a (second spring) is selected to be larger than the spring force F2 of the compression coil spring 41a (first spring) (F1> F2), and therefore each frame 2
When 3a and 23b are relatively displaced in the front-rear directions A1 and A2, the compression coil spring 41a is first compressed, and then the extension coil spring 59a starts to expand. In a normal state, that is, in a state where each of the frames 23a and 23b is not displaced, the stopper 67a interposed between the link members 64a and 65a causes the axis of the pin 60a to move in the direction in which the link members 64a and 65a approach each other. This prevents angular displacement around it.

FIG. 4 is a plan view omitting the cover plate 37 viewed from above in FIG. A guide member 70 having a substantially C-shaped section perpendicular to the axis is fixed to the holder 38 at a right angle at the longitudinal center position of the holder 38. As shown in FIG. 1, a fitting piece 71 is displaceably fitted into the guide member 70, and each end of the levers 50 a and 50 b is fitted to a screw rod 73 formed integrally with the fitting piece 71. The part is pivoted. With such a configuration, each of the frames 23a, 23
Even if 3b is relatively displaced, it is possible to always keep the state where the cover plate 37 is arranged at the center position between the respective skeletons, and to keep the state where the space 21 is securely covered.

With such a configuration, each frame 23a,
Even if the member 23b is relatively displaced in the front-rear direction, that is, in the vertical direction in FIG. 1, the compression coil spring 41 is first compressed and the link means 58 is extended, as shown in FIG. Without this, the cover plate 37 and the holder 38 separate from the spring receiving member 43. When the relative displacement of each of the frames 23a and 23b further increases, FIG.
As shown in (2), the link means 58 starts the extension operation against the spring force of the extension coil spring 59 while the compression coil spring 41 remains in the most compressed state, thereby allowing a larger displacement. can do.

In the above-described embodiment, a compression coil spring 41 is used as the first spring means 35, and a second spring means 36 is used.
Although the tension coil spring 59 is used as an example, as another embodiment of the present invention, a tension spring may be used as the first spring means, and a compression spring may be used as the second spring means.

[0016]

Further, in another embodiment of the present invention, the first and second spring means may be configured to use only a compression spring or may be configured to use only a tension spring.

[0018]

According to the present invention, a first spring for applying a spring force to a cover plate in a direction approaching a spring receiving member;
A second spring for applying a spring force in a contracting direction to the link means is provided, and a spring force of the first spring is set to be smaller than a spring force of the second spring. Accordingly, when the adjacent frame is relatively displaced, the first spring is displaced to move the cover plate with respect to the spring receiving member, and then the second spring is displaced to extend the link means. The cover plate is moved together with the receiving member, and thus it is possible to allow a larger displacement between the frames while the cover plate is spring-biased inward. Further, the link means is connected to the spring receiving member, and the cover plate is movable in the direction of approaching and separating from the spring receiving member, so that a large relative movement with respect to the skeleton is allowed while securely supporting the cover member. Is done.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the configuration of first and second spring means 35 and 36 viewed from the right side in FIG.

FIG. 3 is a perspective view of the vicinity of first and second spring means 35 and 36;

FIG. 4 is a side view showing the cover plate 37 as viewed from above in FIG. 1 with the cover plate 37 omitted;

FIG. 5 is a diagram for explaining the operation of first and second spring means 35 and 36;

FIG. 6 is a simplified horizontal cross-sectional view of a typical prior art.

FIG. 7 is a horizontal sectional view showing a state in which each of the frames 1a and 1b is displaced.

[Explanation of symbols]

 21 Space 23a, 23b Body 24a, 24b Edge material 26 Outside 30 Inside 35 First spring means 36 Second spring means 37 Cover plate 38 Holder 41a, 41b Compression coil spring 43a, 43b Spring receiving member 44a, 44b Spring receiving ring 50a, 50b Lever 56a, 56b Retaining member 57a, 57b Bracket 58a, 58b Linking means 59a, 59b Tension coil spring 70 Guide member

Claims (1)

(57) [Scope of request for utility model registration] 1. Two adjacent frames 23a, spaced apart from each other.
A cover plate 37 provided between 23b;
The spring receiving member 4 disposed inside the cover plate 37
3a and a first spring 41a for applying a spring force in a direction approaching the spring receiving member 43a to the cover plate 37.
A telescopic link means 58a connected to the spring receiving member 43a inside the cover plate 37, and a contraction direction to the link means 58a for urging the spring receiving member 43a inward. A second spring 59a for applying a spring force, wherein the cover plate 37 is movable in a direction approaching and separating from the spring receiving member 43a, and the spring force of the first spring 41a is equal to the second spring 59a. 59a is set smaller than the spring force of
When the first spring 41a is relatively displaced, the first spring 41a is displaced, and the cover plate 37 is moved with respect to the spring receiving member 43a.
An expansion joint device wherein the link means 58a is extended by displacing 9a, whereby the cover plate 37 is moved together with the spring receiving member 43a.