JP5361608B2 - Floor joint cover device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint cover device for a floor, which is equipped with a constitution capable of preventing excessive tightening of a pressure receiving nut. <P>SOLUTION: A connecting means 8 for tiltably connecting one end of a cover body C includes: a plurality of connecting plate portions 1 in which a vertical insertion hole 2 is formed and which are arranged at the one end of the cover body C; a plurality of screw rods 4 which are erected at a horizontal retainer edge 3a of a holding retainer frame 3 for placing one end of the cover body C, so as to be loosely fitted into the insertion holes 2 of the connecting plate portions 1 from below, respectively, and which have the pressure receiving nuts 6 screwed to upper portions, respectively; and a resilient member 7a which is externally fitted to the screw rod 4 and interposed between the pressure receiving nut 6 and the connecting plate portion 1, so as to urge the cover body C downward. A height specifying pipe 5 for specifying a height position of the pressure receiving nut 6 is externally fitted to the screw rod 4. Thus, the appropriate height position of the pressure receiving nut 6 is specified by making an upper end of the height specifying pipe 5 abut on the pressure receiving nut 6 from below in the tightening and screwing of the pressure receiving nut 6, so that the excessive tightening of the pressure receiving nut can be prevented. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a floor joint cover device that covers joints between floors of adjacent buildings.

  In a building whose lower part is supported by a seismic isolation device having a buffering function, horizontal shaking during an earthquake tends to increase. Around such a base-isolated structure, a relatively wide joint is formed between the adjacent artificial ground structure, and it is suitable for use as a joint for such a base-isolated structure. A floor joint cover device that can be used has already been proposed by the present applicant (see, for example, Patent Document 1).

  As shown in FIG. 5 (A), the floor joint cover device is formed between a floor f of a building A as a building and a building B as an artificial ground adjacent to the floor f via a joint s. One end of the cover body C that is passed over to cover the joint s is connected to the side edge of the floor f so as to be tiltable via a connecting means a, and the other end of the cover body C is used as a free end. The end cover plate c is provided at the end with an inclined edge b that is inclined from the lower surface thereof toward the outer upper surface, and is substantially flush with the upper surface d of the cover body C from the upper portion of the inclined edge b. While projecting toward the building B side, a horizontal receiving edge e on the side edge of the building B, and an inclined receiving edge inclined at the outer end of the horizontal receiving edge e in the same direction as the inclined end edge b and a free end of the cover body C is mounted on the horizontal receiving edge e of the slide receiving frame h, The outer end of the end cover plate c is placed on the floor surface i of the building B, and is generated between the inclined end edge b of the cover body C and the inclined receiving edge g of the sliding receiving frame h by the end cover plate c. The upper part of the working gap j is configured to be shielded.

  In the event of an earthquake, when the building A and the adjacent building B are relatively relatively displaced in the approaching direction, the free end of the cover body C moves over the horizontal receiving edge e of the sliding receiving frame h. When the slider slides horizontally within the range of the working gap j and follows the relative displacement, and further greatly displaces, the cover body C can tilt with the connecting means a as a fulcrum as shown in FIG. For this reason, the inclined end edge b formed at the free end is shifted along the inclined receiving edge g of the sliding receiving frame h and can escape from the relative displacement.

  Further, as shown in FIG. 6A, the conventional connecting means a for connecting one end of the cover body C is located in the vertical direction in the vicinity of the both side ends of the cover body C on the lower surface of the end of the cover body C. A plurality of connecting plate portions k each provided with an insertion hole m are provided, and a plurality of bolts are formed on the horizontal receiving edges p of the holding receiving frames n arranged along the longitudinal direction of the joints s on the side edges of the floor f of the building A. The screw rods r are respectively erected in correspondence with the positions where the insertion holes m of the connecting plate portions k are formed, and the screw rods r are loosely fitted into the insertion holes m from below, respectively. The compression spring t is held in an appropriate compression state by a pressure receiving nut u that is externally fitted to t and is screwed onto the upper portion thereof, whereby one end of the cover body C is urged downward by the elastic force of the compression spring t. Thus, it is configured to be connected so as to be tiltable.

JP 10-317516 A

  By the way, in the conventional connecting means a, the compression spring t is held in an appropriate compression state by the pressure receiving nut u screwed onto the upper portion of the screw rod r, and the compression spring t can be further compressed from below. As a result, the cover body C can be tilted. However, when an unskilled worker tightens the pressure receiving nut u excessively at the time of construction, as shown in FIG. Is compressed too much, and as a result, the cover body C is difficult to tilt. In this state, if the free end of the cover body C rides on the inclined receiving edge g (see FIG. 5B) of the sliding receiving frame h during an earthquake, the connecting means a and the cover body C are damaged. was there.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a floor joint cover device having a configuration capable of preventing excessive tightening of a pressure receiving nut.

  In the present invention, one end of a cover body that is passed over a joint between floors of adjacent buildings and covers the joint is connected to a side edge of one floor via a connecting means so as to be tiltable. The other end of the cover body is a free end, and the free end is slidably mounted on the side edge of the other floor, and the connecting means is formed with an insertion hole in the vertical direction at one end of the cover body. A plurality of connecting plate portions arranged, and a holding receiving frame having a horizontal receiving edge on which one end of the cover body is mounted, are erected on the horizontal receiving edge and inserted into the insertion hole of the connecting plate portion from below. A plurality of screw rods that are loosely fitted and project above the connecting plate portion, and a pressure receiving nut is screwed onto the upper portion, and are externally fitted to the screw rod and interposed between the pressure receiving nut and the connecting plate portion. A floor joint cover device comprising a resilient member for urging the cover body downward, wherein the screw rod has a pressure receiving nut It is a floor joint cover device according to claim height defining tube defining the height position of the receiving pressure nut abuts from below are fitted.

  Here, as the height defining tube, a tube having a strength that does not easily buckle even when a pressure is applied by screwing from above the pressure receiving nut screwed onto the screw rod can be used.

  In the floor joint cover device, a configuration is proposed in which the lower end portion of the height regulating pipe is joined to the horizontal receiving edge of the holding receiving frame.

  In the present invention, as described above, the connecting means for connecting the one end of the cover body, which is passed over to the joint between the floors of adjacent buildings and covers the joint, is formed so that the vertical insertion hole is formed. A plurality of connecting plate portions disposed at one end of the cover body, and a holding receiving frame having a horizontal receiving edge on which one end of the cover body is mounted, the connecting plate portion being erected on the horizontal receiving edge A plurality of screw rods that are loosely fitted into the insertion holes from below and projecting upward from the connecting plate portion, and a pressure receiving nut is screwed onto the upper portion, and a pressure receiving nut and the connecting plate portion that are externally fitted to the screw rod. Provided with a resilient member that biases the cover body downward, and a height position of the pressure receiving nut is defined by contacting the screw rod from below with the pressure receiving nut. Since the height regulating pipe is fitted outside, the pressure receiving nut is screwed onto the upper end of the screw rod during construction. As you were threaded rotation in the tightening direction, the upper end of the height prescribed pipe has been fitted on the screw rod abuts from below the pressure receiving nut, it can not be more screw engagement operation of receiving pressure nut. As a result, an appropriate height position of the pressure receiving nut is defined, and excessive tightening can be prevented.

  Further, in the configuration in which the lower end portion of the height defining tube is joined to the horizontal receiving edge of the holding receiving frame, various problems that occur when the height defining tube is separable, i.e., the height during construction. It is possible to prevent the setting of the height regulating pipe and the loss of the height regulating pipe during storage from unpacking to construction, and to eliminate the trouble of setting the height regulating pipe during construction. .

It is a longitudinal cross-sectional view of the principal part which shows the construction state of the joint cover apparatus for floors concerning a 1st Example. It is a perspective view of the holding receiving frame 3 provided with the screw rod 4 and the height defining tube 5. It is a longitudinal cross-sectional view of the principal part which shows the construction state of the joint cover apparatus for floors concerning a 2nd Example. It is a longitudinal cross-sectional view of the principal part which shows the construction state of the floor joint cover apparatus concerning a modification. (A) is a schematic longitudinal cross-sectional view of the floor joint cover apparatus of the conventional structure, (B) is the effect | action explanatory drawing. (A) is a longitudinal cross-sectional view of a connecting means a portion of a conventional configuration, and (B) is an explanatory view showing a state where a pressure receiving nut u is overtightened.

A first embodiment of a floor joint cover device according to the present invention will be described with reference to FIGS.
In FIG. 1, A is a seismic isolation structure whose lower part is supported by a seismic isolation device (not shown) having a buffering function, and is the other structure (not shown) made of artificial ground formed around it. ) And the joint s. The joint s is formed with a predetermined width along the periphery of the building A, and can absorb relative horizontal shaking between the building A and the surrounding building during an earthquake.

  A cover body C covering the joint s is passed between the floor f of the building A and the floor of the other adjacent building. A plurality of the cover bodies C are continuously arranged in the direction along the joints s, and one end of each cover body C is connected to the side edge of the floor f of the building A and connecting means 8 described later. It is connected so that it can tilt through. Each cover body C has the other end as a free end, and the free end is slidably mounted on a slide receiving frame (not shown) disposed on the side edge of the other building. In addition, this sliding receiving frame is provided with the inclination receiving edge which inclines with an up-slope at the outer end, and when the building A and the adjacent building are largely displaced in the direction in which the building A approaches, the cover body C The free end of the cover body is shifted up along the inclined receiving edge so that the cover body C tilts (see FIG. 5B).

  As shown in FIG. 1, a screw rod 4 to be described later is provided at a position near one side edge along the width direction of the joint s at the lower part of one end of the cover body C connected to the side edge of the floor f of the building A. Connecting plate portions 1 each having a vertical insertion hole 2 that can be loosely fitted from below are provided.

  On the other hand, on the side edge of the floor f of the building A, the holding receiving frame 3 is disposed so as to extend in the direction along the joint s. The holding receiving frame 3 is formed in an L-shaped cross section having a horizontal receiving edge 3a and a vertical edge 3b rising upward from the outer end of the horizontal receiving edge 3a. A plurality of screw rods 4 made up of bolts that are inserted through and fixed to the horizontal receiving edge 3a through welding are respectively erected at positions corresponding to the insertion holes 2 of the connecting plate portion 1.

  As shown in FIG. 2, each screw rod 4 is fitted with a height-defining tube 5 having a predetermined length, and its lower end is joined to the horizontal receiving edge 3a. The height defining pipe 5 is abutted from below on a pressure receiving nut 6 screwed onto the upper part of the screw rod 4 to define the height position of the pressure receiving nut 6, and has a predetermined strength. Alternatively, a hard synthetic resin pipe is used as a material. Here, when a metal tube is used as a material, the lower end portion thereof is joined to the horizontal receiving edge 3a through welding, and in the case of a hard synthetic resin pipe, the lower end portion thereof is horizontally received with an adhesive. It is joined to 3a. In this way, by joining the lower end of the height regulating tube 5 externally fitted to the screw rod 4 to the horizontal receiving edge 3a in advance, the height defining tube 5 at the time of construction or after unpacking Loss of the height regulating pipe 5 at the time of storage until construction can be prevented in advance, and the labor for setting the height regulating pipe 5 at construction can be eliminated.

  As shown in FIG. 1, each screw rod 4 with the height-defining tube 5 fitted therein is inserted into the insertion hole of each connecting plate portion 1 in a state where one end of the cover body C is mounted on the horizontal receiving edge 3 a. 2 is loosely fitted from below and protrudes above the connecting plate portion 1, and a resilient member 7a made of a coiled compression spring is externally fitted to the protruding portion. A pressure receiving nut 6 provided with a hook or a washer is screwed onto the upper portion of the screw rod 4 in contact with the upper end of the height defining tube 5, and the elastic member 7 a is held in an appropriate compressed state by the pressure receiving nut 6. One end of the cover body C is urged downward by the elastic force. Thus, the elastic member 7a interposed between the pressure receiving nut 6 and the connecting plate portion 1 is in a compressed state in which it can be further compressed from below, whereby one end of the cover body C can be tilted. ing. The screw rods 4, the connecting plate 1, the pressure receiving nut 6, and the resilient member 7a constitute connecting means 8 for connecting one end of the cover body C to the side edge of the floor f of the building A so as to be tiltable. Has been. Further, the upper part of the cover body C corresponding to each connecting plate portion 1 is an operation port 9 that allows the pressure receiving nut 6 and the resilient member 7a to be attached. The operation port 9 includes a shielding lid 10. Is detachably fitted.

  In such a configuration, a height regulating pipe 5 that abuts against the pressure receiving nut 6 from below and defines the height position of the pressure receiving nut 6 is externally fitted to the screw rod 4 so that the height is increased during construction. When the pressure receiving nut 6 is screwed into the upper end of the screw rod 4 and is screwed in the tightening direction with the elastic member 7a fitted to the regulation tube 5, the height of the screw rod 4 is fitted to the upper end. The upper end of the regulation pipe 5 comes into contact with the pressure receiving nut 6 from below, so that no further screwing operation of the pressure receiving nut 6 can be performed. As a result, an appropriate height position of the pressure receiving nut 6 is defined, excessive tightening can be prevented, and a problem that the cover body C is difficult to tilt due to the elastic member 7a being excessively compressed is prevented. can do.

  FIG. 3 shows a second embodiment. In this embodiment, a resilient member 7b made of a substantially cylindrical rubber bush is used instead of the coiled compression spring as the resilient member 7a in the first embodiment. ing. The elastic member 7b is interposed between the pressure receiving nut 6 and the connecting plate portion 1 in an appropriate compressed state, and one end of the cover body C can be tilted by making the compressed state further compressible from below. It has become. As described above, the elastic member is not limited to the coil-shaped compression spring, and generates an appropriate elastic force while being interposed between the pressure receiving nut 6 and the connecting plate portion 1 in a compressed state. Anything is acceptable.

  Even in such a configuration, when the elastic member 7b is fitted to the height regulating pipe 5 during construction, the pressure receiving nut 6 is screwed onto the upper end of the screw rod 4 and is screwed in the tightening direction. The upper end of the height regulating tube 5 fitted on the screw rod 4 comes into contact with the pressure receiving nut 6 from below, and the screw receiving nut 6 cannot be further screwed. The position is defined and excessive tightening can be prevented.

  In both of the above-described embodiments, the structure in which the connecting plate portion 1 having the insertion hole 2 is disposed at the lower portion of one end of the cover body C has been described. However, as in the modified embodiment shown in FIG. In the case where C includes the bottom plate 11, by forming the insertion hole 2 in the vertical direction in the bottom plate 11, a partial region of the bottom plate 11 can be used as the connecting plate portion 1.

A building C cover body f floor s joint 1 connecting plate part 2 insertion hole 3 holding receiving frame 3a horizontal receiving edge 4 screw rod 5 height regulation pipe 6 pressure receiving nuts 7a, 7b elastic member 8 connecting means

Claims (1)

One end of the cover body which is passed over the joint between the floors of adjacent buildings and covers the joint is connected to the side edge of one floor via a connecting means so as to be tiltable. The end is a free end, the free end is slidably mounted on the side edge of the other floor, and the connecting means is disposed at one end of the cover body with a vertical insertion hole formed. A plurality of connecting plate portions and a holding receiving frame having a horizontal receiving edge on which one end of the cover body is mounted are erected on the horizontal receiving edge, and are loosely fitted into the insertion holes of the connecting plate portion from below. A plurality of screw rods protruding above the connecting plate portion and screwed with a pressure receiving nut on the upper portion thereof, and fitted between the pressure receiving nut and the connecting plate portion by being externally fitted to the screw rod, and covering the cover body. In the floor joint cover device comprising a resilient member that biases downward,
A height defining tube that abuts the pressure receiving nut from below and defines the height position of the pressure receiving nut is externally fitted to the screw rod .
A floor joint cover device , wherein a lower end portion of a height regulating pipe is joined to a horizontal receiving edge of a holding receiving frame .

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