JPH0549908U - Expansion joint device - Google Patents

Abstract

(57) [Summary] [Purpose] Each frame 23a, 2 adjacent to each other across the space 21.
When the 3b undergoes a relatively large displacement, the space 2
1 is kept closed and its displacement is allowed. [Configuration] Two skeletons 23 that are adjacent to each other with a space 21 in between
cover plate 37 provided between a and 23b
A first spring means 35 provided on the inside 30 side of the cover plate 37 and a second spring means 35 connected in series to the first spring means 35 and having a spring force different from that of the first spring means 35.
The spring means 36 engages the respective frames 23a, 23b with the spring 30 biased toward the inside 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an expansion joint device which is provided across a skeleton of a building or the like with a space therebetween.

[0002]

[Prior Art]

 A typical prior art is disclosed in, for example, Japanese Utility Model Application Laid-Open No. 1-61307 (Japanese Patent Application No. 62-155437) proposed by the present applicant, and this prior art is shown in a simplified horizontal sectional view in FIG. Has been done. 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 the space 3. Edge members 6a and 6b are fixed to the respective frames 1a and 1b by anchor bolts 5a and 5b. The edge members 6a and 6b are formed with protrusions 8a and 8b that rise toward the outside 7 and spring bearing portions 9a and 9b that protrude toward the space 3 in a direction in which they approach each other. Compression springs 10a, 10b are supported by the spring receiving portions 9a, 9b, bolts 11a, 11b are inserted into the compression coil springs 10a, 10b, and nuts 13a screwed to the bolts 11a, 11b. The compression coil springs 10a and 10b are retained by 13b and spring receiving pieces 14a and 14b. Sliding pieces 15a, 15b are attached to the heads of the bolts 11a, 11b, and the sliding pieces 15a, 15b are fitted into a holder 16 having a substantially C-shaped cross section perpendicular to the axis. It is slidably supported along the longitudinal direction. A cover plate 17 made of, for example, aluminum is fixed to the holder 16 by screws or the like, and when the skeletons 1a and 1b are displaced due to an earthquake or uneven settlement of the ground, the displacement is allowed. It prevents wind and rain from entering the space 3 from the outside 7.

[0003]

[Problems to be solved by the device]

 In such a prior art, as shown in FIG. 7, when the respective skeletons 1a, 1b are relatively displaced in the front and rear directions A1, A2, at least one of the compression coil springs 10b can no longer contract. If the skeletons 1a, 1b are further compressed in the front-rear direction A1, A2 beyond this state, excessive force acts on the edge member 6b, the holder 16 and the cover plate 17 to deform or destroy them. There is a problem that it will end up.

Therefore, an object of the present invention is to provide an expansion joint device capable of maintaining a state in which a space between the respective skeletons is closed and permitting a larger relative displacement in the front-rear direction between the skeletons. Is to provide.

[0005]

[Means for Solving the Problems]

 According to the present invention, a cover plate, which is provided between two adjacent skeletons with a space, is connected in series to a first spring means provided on the inner side of the cover plate, and is connected to the first spring means in series. The expansion joint device is characterized in that the expansion joint device is locked to each skeleton in a state in which a spring means and a second spring means having a different spring force are biased toward the inside.

[0006]

[Action]

 According to the present invention, a cover plate is provided between two adjacent frames with a space. A first spring means and a second spring means connected in series to the first spring means are provided on the inner side of the cover plate, and the cover plate is internally formed by the first and second spring means. It is locked to each body with the spring biased to the side. The second spring means has a spring force different from that of the first spring means. Therefore, when each body is relatively displaced, either one of the first and second spring means having a smaller spring force is compressed or It is extended to exert a compressive force or a tensile force, whereby the cover plate can be locked while being biased inward by the spring, and the displacement of each frame can be allowed. Further, when the relative displacement of each frame increases, the one of the first and second spring means, which has a smaller spring force, cannot be compressed or expanded, and therefore, the first and second spring means cannot be compressed. One of the spring means, which has a larger spring force, compresses or expands to exert a compressive force or a tensile force, and the cover plate is further biased toward the inner side with a larger spring force than each body. Displacement is allowed.

[0007]

【Example】

 FIG. 1 is a typical prior art horizontal cross-section. Roughly L-shaped stainless steel edge members 24a and 24b are fixed to the concrete frames 23a and 23b such as buildings adjacent to each other with the space 21 from the outside 26 side by anchor bolts 25a and 25b. To be done. The edge members 24a, 24b are mounting portions 28a, 28b extending along the outer surfaces 27a, 27b of the frames 23a, 23b facing the outside 26, and the inner surfaces 29a, 29b of the frames 23a, 23b facing each other. The extending portions 31a and 31b extending from the outer surfaces 27a and 27b toward the inside 30 along with the extending portions 31a and 31b are bent at substantially right angles to each other and are continuous to the space 21 in a direction in which they are close to each other. It has the support parts 33a and 33b extended toward. On each support portion 33a, 33b, the first and second spring means 35a, 35b; 36a, 36b cover the space 21 between the bodies 23a, 23b and cover the space 21 with an aluminum cover plate 37 on the inside 30 side. Is provided so as to be biased by a spring.

FIG. 2 is a sectional view of the structure of the first and second spring means 35a, 36a seen from the right side of FIG. 1, and FIG. 3 is a perspective view of the vicinity of the first and second spring means 35a, 36a. is there. Since the first and second spring means 35b, 36b provided on the other frame 23b are configured in the same manner as the first and second spring means 35a, 36a described below, avoid duplication. The description is omitted.

The first spring means 35a is a sliding piece 39a which is slidably fitted along the longitudinal direction into a holder 38 to which the cover plate 37 is fixed and whose cross section perpendicular to the axis is substantially C-shaped. A bolt 40a inserted through the sliding piece 39a, a compression coil spring 41a attached to the bolt 40a, a spring receiving member 43a with which one end of the compression coil spring 41a abuts, and a compression coil spring 41a. A spring receiving ring 44a with which the other end of the bolt abuts, and a nut 46a screwed to the bolt 40a.

The spring receiving member 43 a has a pair of side walls 47 and 48 formed in parallel with each other with a space therebetween, and an arc-shaped curved connecting portion 49 connecting the side walls 47 and 48. It 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. Further, the connecting portion 49 has an insertion hole 53a through which the bolt 40a is inserted. The holder 38a and the lever 50a are elastically pressed against the spring receiving member 43a by the spring force from the compression coil spring 41a through the bolt 40a that passes through the bolt insertion holes 51a and 53a, and is locked. Has been done.

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

The link means 58a has one end in the longitudinal direction pin-coupled with a pin 60a, and the other end in the longitudinal direction pin-coupled with the spring receiving member 43a and the bracket 57a by pins 61a and 63a. The connecting means 66a composed of the members 64a and 65a are configured so as to be bilaterally symmetrical in FIG. 2 and to be paired in the direction perpendicular to the paper surface. One end of the tension coil spring 59a is locked to the link member 64a near the pin 61a, and the other end is locked to the link member 65a near the pin 63a. By such a tension coil spring 59a, the link members 64a and 65a are spring-biased in the directions in which they approach each other. In the present embodiment, four tension coil springs 59a are provided, and the tension coil spring 41a is one. The spring force F1 by these four tension coil springs 59a is selected to be larger than the spring force F2 of the compression coil spring 41a (F1> F2), and therefore, the respective frames 23a and 23b are relatively moved in the front-back direction A1. , A2, the compression coil spring 41a is first compressed and then the tension coil spring 59a is extended. In a normal state, that is, in a state in which the respective skeletons 23a and 23b are not displaced, the stopper 67a interposed between the respective link members 64a and 65a allows the link members 64a and 65a to approach each other in the axial direction of the pin 60a. It prevents angular displacement around it.

FIG. 4 is a plan view showing the cover plate 37 as seen from above in FIG. A guide member 70 having a substantially C-shaped cross section perpendicular to the axis is fixed to the holder 38 at a right angle at the central position in the longitudinal direction of the holder 38. As shown in FIG. 1, a fitting piece 71 is displaceably fitted into the guide member 70, and a threaded rod 73 integrally formed with the fitting piece 71 is attached to each of the levers 50a and 50b. The ends are pivoted. With such a configuration, even if the respective skeletons 23a and 23b are displaced relative to each other, the cover plate 37 is always kept in the central position between the skeletons and the state in which the space 21 is surely covered is maintained. can do.

With such a configuration, as shown in FIG. 5 (1), even if the respective skeletons 23a and 23b are relatively displaced in the front-back direction, that is, in the vertical direction in FIG. First, the compression coil spring 41 is compressed, and the cover plate 37 and the holder 38 are separated from the spring receiving member 43 without the link means 58 extending. Further, when the relative displacement of each of the frames 23a and 23b becomes large, as shown in FIG. 5 (2), the linking means 58 is moved to the tension coil spring 59 while the compression coil spring 41 remains in the most compressed state. An extension movement is initiated against the spring force, which allows a larger displacement.

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

Further, in the above-described embodiment, the spring force of the first spring means 35 is set to be weaker than the spring force of the second spring means 36, but as another embodiment of the present invention, the first spring means 35 May be set to be larger than that of the second spring means 36.

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

[0018]

[Effect of the device]

 According to the present invention, the cover plate is locked while being biased toward the inside by the first spring and the second spring having different spring forces, which is significantly larger than the conventional one. It is possible to allow a relative displacement between each body.

[Brief description of 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, 36 as seen from the right side of 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 seen from above in FIG.

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

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

FIG. 7 is a horizontal cross-sectional view showing a state where the respective skeletons 1a and 1b are displaced.

[Explanation of symbols]

 21 Spaces 23a, 23b Frames 24a, 24b Edge material 26 Outside 30 Inside 35 First spring means 36 Second spring means 37 Cover plate 38 Holders 41a, 41b Compression coil springs 43a, 43b Spring receiving members 44a, 44b Spring receiving rings 50a, 50b Lever 56a, 56b Detachment prevention member 57a, 57b Bracket 58a, 58b Link means 59a, 59b Tension coil spring 70 Guide member

Claims (1)

[Scope of utility model registration request] 1. A cover plate provided between two adjacent frames with a space therebetween, a first spring means provided on the inner side of the cover plate, and the first spring means.
An expansion joint device, wherein the expansion joint device is connected to the spring means in series, and is locked to each body while being biased inward by the first spring means and the second spring means having different spring forces.