JP2014224403A - Floor joint cover device - Google Patents

Abstract

In a floor joint cover device that covers a joint between two floor casings with a cover member, a structure is simple and a structure in which no gap is generated between the floor casing and the cover member is provided. A cover member in which a connecting rod is erected and fixed on a receiving surface A1a of a first recess A1 provided in one floor case A, and a space portion 12 is formed inside a side wall 11a on the base end side. The base end side is placed on the receiving surface so that the connecting rod enters the space, and is swingably supported. A torsion spring 15 consisting of a plurality of vine winding portions 15a and two extension portions 15b extending at both ends thereof is inserted into the space portion so that the connecting rod passes through the winding portion, and the respective extension portions are rotated in opposite directions. It is elastically deformed so as to be moved, and an elastic pressing force is applied to the inner surface of the proximal side wall of the cover member by the distal end portion of each extension, and the reaction force of this pressing force is received by the connecting rod, Is elastically urged toward the vertical surface A1b of the first recess of one floor case. [Selection] Figure 1

Description

  In the present invention, at least one is installed on the ground via a seismic isolation device, faces each other in the horizontal direction with a joint C having a predetermined width, and normally at least one of them is provided with a building. The present invention relates to a floor joint cover device including a floor frame and a cover member covering the joint.

  An example of this type of floor joint cover device is disclosed in FIG. 9 of Japanese Patent Application Laid-Open No. 2011-47103 (Patent Document 1). First, this background art will be described with reference to FIGS. 17 and 18 show the overall structure of the floor joint cover device, and FIG. 14 shows an enlarged cross-sectional view of a portion E surrounded by a circle in FIG. Two floor frames A and B, at least one of which is installed on the ground via a seismic isolation device, face each other in a horizontal direction with a joint C having a predetermined width, and the joint C includes a box-shaped frame 2. Covered by the cover member 1.

  As shown in FIGS. 14 and 18, the upper surface of the first floor case A is received at a depth substantially the same as the thickness of the base end portion of the cover member 1 on the first floor case A side along the joint C. A step-shaped first recess A1 composed of a surface A1a and a vertical surface A1b is formed, and a plurality of connecting rods 9 are erected and fixed to the receiving surface A1a. The first recess A1 is covered with a receiving frame plate Aa made of a steel plate whose section is bent in an L shape, and the plurality of connecting rods 9 made of hexagon bolts are connected to the receiving surface A1a side of the receiving frame plate Aa. The bottom plate is inserted through a hole from below, and the head is brought into contact with the lower surface of the bottom plate and fixed by welding. A support member 7 made of a rubber plate or the like that supports the base end side of the cover member 1 is fixed on the bottom plate of the receiving frame plate Aa.

  A second recess B1 having a depth substantially the same as the thickness of the tip of the cover member 1 and having a width wider than the first recess A1 is formed on the upper surface of the second floor frame B along the joint C. The two concave portions B1 have a bottom surface B1a and an inclined surface B1b that rises from the tip edge farthest from the joint C toward the upper surface of the second floor frame B. The bottom surface B1a and the inclined surface B1b of the second recess B1, and a part of the front surface of the second floor frame B extending downward from the front edge of the bottom surface B1a and the second floor frame B extending rearward from the upper edge of the inclined surface B1b. A part of the upper surface is covered with a sliding plate Ba made of a bent steel plate.

  The frame 2 of the cover member 1 includes a rectangular bottom plate 2e, a proximal side wall 2a, a distal side wall 2b, and left and right sides fixed to the four sides of the bottom plate 2e so as to determine the thickness of the cover member 1. Folded into an L shape in plan view in which the both ends are connected between the wall 2c and the vicinity of both end portions of the side wall 2a on the base end side and the base end portions of the left and right side walls 2c to form a space 3 having a rectangular shape. The bent partition wall 2d and the bottom wall 2f which closes the lower side of the space 3 are inserted into the bottom wall 2f in the shape of a long hole extending in a direction orthogonal to the proximal side wall 2a. 2g is formed. Of the space formed by the side walls 2a to 2c on the upper side of the bottom plate 2e, the portion excluding the space portion 3 formed by the partition wall 2d is a pavement made of a filler 4a such as mortar and a floor finishing material 4b such as tile. 4 is filled. The frame 2 is provided with a distal end cover plate 1a having an L-shaped cross section, a short side fixed to the side wall 2b on the distal end side, and a long side extending from the upper edge in the direction opposite to the proximal end side. The material of the frame 2 and the tip cover plate 1a is a steel plate, which are integrally connected by welding or bolting.

  Such a cover member 1 is engaged with the first floor case A by inserting the connecting rod 9 into the space portion 3 from the lower side through the insertion hole 2g formed in the bottom wall 2f of the frame 2, and the proximal side Is placed on the receiving surface of the first recess A1 of the first floor case A via the support member 7 so that it can move slightly in the horizontal direction and can swing around the base end side. To be supported. In addition, as shown in FIG. 18, the lower surface of the distal end portion of the distal end portion cover plate 1 a is the upper surface of the second floor case B at the distal end side of the cover member 1 when the width of the joint C is normal as shown in FIG. The portion excluding the front end cover plate 1a is accommodated in the second recess B1 of the second floor frame B.

  When attaching the cover member 1, as shown in FIGS. 14 and 18, the connecting rod 9 is inserted into the insertion hole 2 g of the bottom wall 2 f so that the base end side of the cover member 1 is the first of the first floor case A. The washer 5a and the coil spring 5 are placed on the bottom surface A1a of the recess A1, with the side wall 2a on the base end side of the frame 2 in contact with the vertical surface A1b of the first recess A1 and through the connecting rod 9. Set on the wall 2f, screw the nut 6 into the upper end of the connecting rod 9, and lightly press the bottom wall 2f against the support member 7 on the bottom plate of the receiving frame plate Aa. The opening above the space 3 is closed by a cap 3a made of rubber or the like.

JP2011-47103A (paragraph [0004], paragraph [0006], FIG. 9).

  In the technique of Patent Document 1 described above, if the width of the joint C between the two floor frames A and B changes due to a roll caused by an earthquake in the state where the cover member 1 is attached as shown in FIG. 9, the cover member 1 engaged with the first floor case A moves together with the first floor case A and moves relative to the second floor case B. As shown in FIG. 19, when the width of the joint C of both the floor frames A and B is greatly reduced, the tip of the frame 2 of the cover member 1 exceeds the position of the inclined surface B1 b of the second floor frame B. The bottom surface of No. 2 is pushed up by the uppermost edge of the inclined surface B1b, and the cover member 1 is swung up by being largely swung around its base end side. In this state, as shown in FIG. 15 which is an enlarged cross-sectional view of a portion F surrounded by a circle in FIG. 19, the cover member 1 that is flipped up is formed on the outer surface of the side wall 2 a on the base end side of the frame 2 of the cover member 1. Since the upper edge abuts on the vertical surface A1b of the first recess A1 of the first floor case A and swings about the vicinity of the upper edge, the bottom wall 2f of the cover member 1 near the side wall 2a on the base end side is In the state of sliding on the support member 7 and being most lifted up, the contact line P between the cover member 1 and the support member 7 supporting the cover member 1 (in FIG. 15, the lower edge of the outer surface of the side wall 2a on the base end side) is It is separated from the vertical surface A1b of the first recess A1 by a distance D.

  When the earthquake ends from this state and the width of the joint C returns to the original state, the cover member 1 returns to the horizontal state in which the lower surface of the tip cover plate 1a is supported by contacting the upper surface of the second floor frame B. However, at this time, no force is generated to slide the bottom wall 2f of the cover member 1 in the vicinity of the side wall 2a on the base end side with respect to the support member 7, and the cover member 1 swings around the contact line P shown in FIG. As shown in FIG. 16, the outer surface of the side wall 2a on the base end side of the cover member 1 is located at a distance D from the vertical surface A1b of the first recess A1, and the vertical surface A1b of the first recess A1 There is a considerable gap D between the outer surfaces of the side wall 2a on the base end side of the cover member 1. For this reason, the problem that the heel of a pedestrian's high heel fits into this clearance gap D arises.

  In the above description, it is assumed that the inclined surface B1b is formed at the tip of the second recess B1 formed in the second floor frame B, and the side wall 2b on the tip side of the frame 2 facing this is perpendicular to the bottom plate 2e. As described above, the side wall 2b on the front end side of the frame 2 is also inclined substantially parallel to the inclined surface B1b (shown by a two-dot chain line 1b), or only the side wall 2b on the front end side of the frame 2 is inclined to form the second recess B1. The above description is valid as it is, even if the tip of the structure rises vertically.

  The technique of Patent Document 1 described above solves the problem that, as described above, a considerable gap D is opened between the vertical surface A1b of the first recess A1 and the base end portion of the cover member 1 and the heels of the high heels are caught. Therefore, a plurality of guides provided with a guide inclined surface 21 disposed on the horizontal receiving edge 19a of the holding receiving frame 19 and extending along the width direction of the joint s, and inclined downward in the direction of the vertical edge 19b. The member 20 is disposed in a lower portion of one end of the cover body C, and is formed in a long hole shape capable of loosely fitting the guide member 20 from below, and the hole end 16a positioned on the vertical edge 19b side of the holding receiving frame 19 is guided. In-situ position return means comprising a plurality of connecting plate portions 18 provided with insertion holes 16 that contact the guide inclined surface 21 of the member 20 is provided. When the cover body C is displaced in the joint s direction due to an earthquake or the like, the original position returning means is configured such that the hole end 16a of the insertion hole 16 rides on the guide inclined surface 21 of the guide member 20; The cover body C is returned to the original position when 16a slides down on the guide inclined surface 21 toward the horizontal receiving edge 19a. In this original position returning means, the hole end 16a of the insertion hole 16 that has ridden on the guide inclined surface 21 when the cover body C is displaced in the joint s direction overcomes the frictional resistance of each part and the like, and the weight of the insertion hole 16 on the guide inclined surface 21 by its own weight. Since the cover body C is returned to the original position by sliding down toward the horizontal receiving edge 19a, the inclination angle of the guide inclined surface 21 needs to be considerably large (for example, 40 ° to 50 °). However, as explained in FIGS. 15 and 19, even when the cover body C of Patent Document 1 jumps up, the upper edge of the outer surface of the rear wall plate 8 of the cover body C abuts on the vertical edge 19 b of the holding receiving frame 19. The upper rocker swings around the upper edge, and with this swinging, a frictional force is applied to the contact portion between the hole end 16a of the insertion hole 16 of the connecting plate portion 18 of the cover body C and the guide inclined surface 21. Considering this, a very strong force is generated, so that there is a problem that the cover body C cannot be expected to smoothly jump up. In order to reduce the force generated between the contact portions, the inclination angle of the guide inclined surface 21 may be reduced. In this case, the hole end 16a of the insertion hole 16 that rides on the guide inclined surface 21 is provided at each portion. The problem that it is difficult to solve simultaneously is that the action of returning the cover body C to the original position is reduced and lost substantially by overcoming the frictional resistance and sliding down on the guide inclined surface 21 toward the horizontal receiving edge 19a by its own weight. Have.

  On the other hand, Japanese Patent Laying-Open No. 2005-325611 and Japanese Patent Laying-Open No. 2008-255578 disclose that a cover member is elastically biased by a spring member toward a floor housing side that supports the base end side. A technique for preventing a gap from being generated between the vertical surface of one floor frame and the side wall 2a on the base end side of the cover member is disclosed, and the above-described problems can be solved by doing so. However, both of these two prior arts require a number of parts in addition to the spring member, and there is a problem that the structure is complicated. The present invention solves each of the above problems and provides a floor joint cover device having a simple structure and elastically urging the cover member by a spring member toward the floor housing side supporting the base end side thereof. With the goal.

  For this purpose, the floor joint cover device according to the present invention includes at least one of the first and second floor housings, which are installed on the ground via a seismic isolation device and face each other in a horizontal direction with a joint having a predetermined width, and a box And a cover member covering the joint. The upper surface of the first floor housing is formed of a receiving surface along the joint and a vertical surface rising from one side edge thereof, and is a base on the first floor housing side of the cover member. A step-shaped first recess having a depth substantially the same as the thickness of the end portion is formed, and a plurality of connecting rods are erected and fixed to the receiving surface, and a cover member is formed on the upper surface of the second floor frame along the joint. A second recess having a width substantially equal to the thickness of the first recess and wider than the first recess is formed, and the cover member is connected to a space formed inside the side wall on the base end side of the frame. The base on the receiving surface of the first recess so that the rod is inserted and engaged. The bottom surface of each cover member is supported so as to be swingable about the base end side, and the front end portion of each cover member is supported in the second recess so as to be movable in the horizontal direction. In the floor joint cover device in which at least one of the front end portion and the front end portion of the second recess facing the top surface of the cover member or the second floor frame is formed with an upwardly inclined slope surface, A plurality of torsion springs comprising a plurality of helical winding parts made of wire and two extension parts extending in the direction orthogonal to the central axis of the winding part at both ends thereof, the torsion springs being wound by the connecting rod The torsion spring is elastically deformed so that the two extensions are rotated in opposite directions around the connecting rod, and the distal end of each extension is on the proximal side. Side wall A part of the outer periphery of the connecting rod opposite to the joint on the outer surface of the connecting rod comes into contact with a part of the inner periphery of the coiled part to generate a reaction force of the elastic biasing force. It is characterized in that the base side wall is elastically biased toward the vertical surface of the first recess so as to be received.

  In the floor joint cover device configured as described above, a plurality of vine winding parts made of a metal wire rich in elasticity and two extensions extending both ends thereof in a direction perpendicular to the central axis of the wrapping part. The torsion spring is provided in the space portion so that the connecting rod is inserted into the winding portion of the coil, and the two extension portions are rotated around the connecting rod in opposite directions. The spring is elastically deformed so that the distal end of each extension abuts against the inner surface of the side wall on the proximal end side and applies an elastic pressing force thereto, and a part of the connecting rod opposite the joint on the outer peripheral surface is suspended Since the base side wall is elastically urged toward the vertical surface of the first recess so as to contact a part of the inner periphery of the portion and receive the reaction force of the elastic urging force, The side wall on the base end side of the cover member is the entire outer surface. It is in contact with the vertical surface of the recess. When the cover member is swung up around the base end side due to an earthquake or the like, the side wall on the base end side of the cover member abuts the upper edge of the outer surface on the vertical surface of the first recess, and the side wall The lower edge of the outer surface slides away from the vertical surface on the receiving surface of the first recess. However, in the process of returning the cover member to the horizontal state, due to the biasing force of the torsion spring, the upper edge of the outer surface of the side wall remains in contact with the vertical surface of the first recess, and the lower edge of the outer surface is the first recess. In the state where it slides on the receiving surface and approaches the vertical surface of the first recess and returns to the horizontal surface, the entire outer surface of the side wall contacts the vertical surface of the first recess. In this state, the outer surface of the side wall on the base end side of the cover member is brought into contact with the vertical surface of the first recess on the entire surface. Therefore, there is no problem that a gap is generated between the vertical surface of the first recess and the outer surface of the side wall on the base end side of the cover member, and the heel of the pedestrian is stuck. In addition, the reaction force of the torsion spring that elastically biases the side wall on the base end side of the cover member toward the vertical surface of the first recess of the first floor frame is fixed upright on the receiving surface of the first recess. The cover member is received using a connecting rod that slidably engages with the first floor case, and the side wall on the base end side of the cover member is elastically directed toward the vertical surface of the first recess of the first floor case. Since the mechanism for biasing is substantially only a torsion spring, the structure of the biasing mechanism can be greatly simplified as compared with the background art described above.

  In the floor joint cover device configured as described above, the frame of the cover member is fixed perpendicularly to the square bottom plate and the base end side and left and right side edges of the bottom plate, and surrounds the three sides of the bottom plate. The side wall on the base end side and the left and right side walls that determine the thickness of the base plate, the side wall on the front end side fixed to the side edge on the front end side of the bottom plate, the vicinity of both end portions of the side wall on the base end side, and the base on the left and right side walls A partition wall that is connected at both ends near the end portion to form a space portion between the side wall on the base end side and both side walls, and a bottom that closes the lower side of the space portion by forming an insertion hole through which the connecting rod passes. Of the space formed by each side wall on the upper side of the bottom plate, the part excluding the space formed by the partition wall and the bottom wall is filled with pavement, and the side wall on the tip side is filled with the upper edge It is preferable to fix the front end cover plate extending in the direction opposite to the base end side. When doing so, the cover member is inserted into the insertion hole formed in the bottom wall of the cover rod and engaged with the first floor frame, and the frame of the cover member is mostly filled with the paving material, Since the tip end portion of the second recess on the second floor frame following the tip end portion of the frame can be hidden by the tip portion cover plate, the appearance of the floor joint cover device can be improved.

  In the floor joint cover device configured as described above, at least one plate-like spacer is detachably inserted between the distal end portion of each extension portion of the torsion spring and the inner surface of the side wall on the proximal end side of the cover member. It is preferable to do. In this case, after inserting the torsion spring between the base end side wall of the cover member and the connecting rod, between the tip of each extension of the torsion spring and the inner surface of the base end side wall of the cover member. By selecting the thickness and the number of spacers to be inserted into the cover, it is possible to adjust the biasing force of the torsion spring against the side wall on the base end side of the cover member. Moreover, the initial bending at the time of inserting the torsion spring between the side wall on the base end side of the cover member and the connecting rod can be reduced, and the assembly work of the torsion spring to the floor joint cover device can be facilitated.

  In the floor joint cover device configured as described above, it is preferable to provide a raised member below the torsion spring to increase the position of the torsion spring. When this is done, it is possible to reduce the bending of the torsion spring accompanying the springing up of the cover member, and even when using a torsion spring having a large spring constant, the cover member is returned by the torsion spring when it returns to the horizontal state. A predetermined urging force can be obtained with respect to the side wall on the base end side.

  In the floor joint cover device constructed as described above, a connecting rod consisting of a helical winding portion and an extension portion similar to the above is inserted on the upper side of the torsion spring and the tip of the extension portion abuts. A second torsion spring that elastically biases the side wall on the base end side of the cover member toward the vertical surface of the first recess, and the second raising member is interposed between the two torsion springs. It is preferable to do. When this is done, the two torsion springs operate independently and elastically bias the side wall on the base end side of the cover member toward the vertical surface of the first recess of the first floor frame, The urging force with respect to the side wall on the base end side can be increased, and since the second raising member is interposed between the torsion springs, problems such as entanglement of the two torsion springs can be avoided. Furthermore, in this floor joint cover device, it is preferable that the spring constant of the upper torsion spring is larger than the spring constant of the lower torsion spring. Since the upper second torsion spring is less bent than the lower torsion spring, the torsion spring is not bent as the cover member springs up. In such a case, when returning to the horizontal state, the urging force on the base end side wall of the cover member can be made larger than the lower side torsion spring by the upper torsion spring. The biasing force can be further increased.

  In the floor joint cover device configured as described above, the frame of the cover member is fixed perpendicularly to the square bottom plate and the base end side and left and right side edges of the bottom plate, and surrounds the three sides of the bottom plate. The side wall on the base end side and the left and right side walls that determine the thickness of the base plate, the side wall on the front end side fixed to the side edge on the front end side of the bottom plate, the vicinity of both end portions of the side wall on the base end side, and the base on the left and right side walls A partition wall which is connected at both ends between the ends and whose upper edge is lower than the upper edge of each side wall and forms a space between the side wall on the base end side and both side walls; It consists of an intermediate bottom plate that closes the upper side. Of the space formed by the bottom plate and each side wall, the portion excluding the space portion formed by the partition wall and the intermediate bottom plate and the lower side being released is filled with pavement, and the tip side It is fixed to the side wall and extends in the direction opposite to the base end side from the upper edge. It consists of an end cover plate, an L-shaped bent bottom wall and a rising wall. An insertion hole is formed in the bottom wall, and a guide slope bent at an obtuse angle on the rising wall at the bottom wall side. And a biasing force transmitting member that can be inserted into the space of the frame from below, and each of the biasing force transmitting members is provided on the receiving surface of the first recess so that each connecting rod passes through the insertion hole. So that the rising wall is slidable between a position where the rising wall abuts on the vertical surface of the first recess and a position where the rising wall separates from the vertical position, and each torsion spring is attached so that the connecting rod is inserted into the coiled portion. The torsion spring is elastically deformed so that the two extension portions are rotated in opposite directions around the connecting rod, and the tip portion of each extension portion transmits the urging force. Abutting against the inner surface of the rising wall of the member and applying elastic pressing force to it And the part of the outer peripheral surface of the connecting rod on the side opposite to the second floor frame abuts on a part of the inner periphery of the winding part to receive the reaction force of the elastic urging force. The cover member is elastically urged toward the vertical surface of the recess, and the cover member has its outer surface of the side wall on the base end side brought into contact with the vertical surface of the first recess of the first floor case and moved downward to be on the base end side. The lower edge of the side wall is brought into contact with the guide portion of the rising wall of the urging force transmission member, and the urging force transmission member is retracted against the urging force of the torsion spring, so that the vertical surface of the first recess and the urging force transmission member Inserted between the rising walls, elastically biasing the side wall on the proximal end side to the rising wall surface of the first recess of the first floor frame via the biasing force transmitting member, and on the receiving surface of the first recess By placing the bottom surface of the base end side of the cover member, it is possible to swing around the base end side. It is preferable to support. In this case, the space portion of the frame of the cover member is closed on the upper side by the intermediate bottom plate and the lower side is released, and the connecting rod is inserted into the insertion hole of the urging force transmitting member inserted into the space portion, so that the first Since the frame of the cover member is engaged with the floor frame, the entire upper surface of the cover member is filled with the paving material, and the tip of the second recess on the second floor frame following the tip of the frame is covered with the tip. Since it can hide with a board, the appearance of a floor joint cover apparatus can be improved further. As described above, in order to further improve the appearance of the floor joint cover device, a mechanism for elastically urging the side wall on the base end side of the cover member toward the vertical surface of the first recess of the first floor frame is added. Since only the urging force transmission member is used, the structure is simplified compared to the background art described above.

It is a sectional side view which shows the principal part of 1st Embodiment of the floor joint cover apparatus by this invention. It is a top view of the principal part of 1st Embodiment shown in FIG. It is a sectional side view of the principal part in the state where the cover member of 1st Embodiment shown in FIG. 1 jumped up. It is a top view of the principal part in the state where the cover member of 1st Embodiment shown in FIG. 1 jumped up. It is a sectional side view equivalent to FIG. 1 of the 1st modification of 1st Embodiment shown in FIG. It is a top view equivalent to FIG. 2 of the 1st modification shown in FIG. FIG. 6 is a side sectional view corresponding to FIG. 3 of the first modification shown in FIG. 5. FIG. 6 is a plan view corresponding to FIG. 4 of the first modification shown in FIG. 5. It is a sectional side view equivalent to FIG. 1 of the 2nd modification of 1st Embodiment shown in FIG. It is a sectional side view equivalent to FIG. 1 of the 3rd modification of 1st Embodiment shown in FIG. It is a sectional side view equivalent to FIG. 1 of 2nd Embodiment of the floor joint cover apparatus by this invention. FIG. 12 is a side sectional view corresponding to FIG. 3 of the second embodiment shown in FIG. 11. It is an exploded view which shows the principal part of 2nd Embodiment shown in FIG. It is a sectional side view equivalent to FIG. 1 of the floor joint cover apparatus by a prior art. It is a sectional side view equivalent to FIG. 3 of the floor joint cover apparatus by a prior art shown in FIG. FIG. 15 is a side cross-sectional view illustrating a state in which the cover member of the floor joint cover device according to the related art illustrated in FIG. It is a top view which shows the whole structure of the floor joint cover apparatus by the prior art shown in FIG. FIG. 19 is an overall side sectional view taken along line 18-18 in FIG. 14. It is a whole sectional side view which shows the whole structure in the state in which the cover member of the floor joint cover apparatus by the prior art shown in FIG. 14 jumped up.

  Below, the floor joint cover apparatus by this invention is demonstrated with reference to FIGS. The floor joint cover device according to the present invention includes a first floor case A, a second floor case B, cover members 10 and 20, and a torsion spring 15 that elastically biases the cover member 10 toward the first floor case A. Therefore, the first floor case A and the second floor case B have the same structure as that described above with reference to FIGS. Moreover, since the front-end | tip part of the cover members 10 and 20 including the front-end | tip part cover board 1a is also the same structure as what was previously demonstrated by FIGS. 17-19, each description is abbreviate | omitted.

  First, a first embodiment of a floor joint cover device according to the present invention will be described with reference to FIGS. As shown mainly in FIGS. 1 and 2, the frame 11 of the cover member 10 according to the first embodiment has a rectangular bottom plate 11e and lower edges fixed to the four sides of the bottom plate 11e so that the frame 11 rises at a right angle. The proximal side wall 11a, the distal side wall 11b (same as the side wall 2b shown in FIG. 18 of the prior art), the left and right side walls 11c, and the vicinity of both ends of the proximal side wall 11a And a partition wall 11d bent in an L shape in plan view in which both ends are connected between the vicinity of the base ends of the left and right side walls 11c to form a rectangular cubic space portion 12, and a bottom plate 11e. The bottom wall 11f is formed and closes the lower side of the space portion 12. The bottom wall 11f is formed with an insertion hole 11g through which the connecting rod 9 is passed in a long hole shape extending in a direction orthogonal to the side wall 11a on the base end side. Yes. Of the space formed by the side walls 11a to 11c on the upper side of the bottom plate 11e, the portion excluding the space portion 12 formed by the partition wall 11d is a floor finish such as a filler such as mortar and tiles, as in the prior art described above. It is filled with a paving material 13 made of a material. The outer side of the side wall 11b on the distal end side of the frame 11 is fixed with the short side of the distal end cover plate 1a having an L-shaped cross section, as in the prior art, and the long side extends from the upper edge to the proximal end side. It extends in the opposite direction. Each member of the frame 11 and the material of the front end cover plate 1a are steel plates and are integrally coupled by welding or bolting.

  This cover member 10 is somewhat distanced from the first floor case A by inserting each connecting rod 9 into the space 12 from below through an insertion hole 11g formed in the bottom wall 11f on the base end side of the frame 11. By placing the lower surface, which is movably engaged in the horizontal direction and is the base end side, fixed on the first recess A1 of the first floor case A, the rocking centered on the base end side is placed. Supported to allow movement. Further, in the state where the width of the joint C is normal, the front end side of the cover member 10 is supported by the lower surface of the front end portion of the front end cover plate 1a being in contact with the upper surface of the second floor frame B, as in the prior art. The portion excluding the tip cover plate 1a is housed in the second recess B1 of the second floor frame B.

  The torsion spring 15 that elastically biases the cover member 10 toward the first floor case A side is made of a metal wire rich in elasticity, and as shown in FIGS. 15a and two extending portions 15b extending in a direction perpendicular to the central axis of the winding portion 15a that hangs both ends thereof. The torsion spring 15 is provided in the space portion 12 so that each connecting rod 9 is inserted into the winding portion 15a in a state where each connecting rod 9 is inserted into the space portion 12 from below as described above. It is a thing. In the torsion spring 15, the two extension portions 15 b are elastically deformed so that they are rotated in opposite directions around the connecting rod 9 from the free state shown by the two-dot chain line 15 c in FIG. 2 to the position shown by the solid line, An elastic pressing force is applied by bringing the distal end portion of each extension portion 15b into contact with the inner surface of the side wall 11a on the proximal end side of the frame 11, and a part of the outer peripheral surface of the connecting rod 9 opposite to the joint C is formed. The side wall 11a on the base end side of the cover member 10 is brought into contact with a part of the inner periphery of the vine winding portion 15a to receive the reaction force of the elastic biasing force, and the vertical surface of the first recess A1 of the first floor case A It is elastically biased toward A1b.

  A retaining member (cap nut) 16 is screwed and fixed to the tip of each connecting rod 9 in order to prevent the torsion springs 15 from being detached. In addition, on the side wall 11a on the base end side of the frame 11, as shown by a two-dot chain line in FIG. 1, the distal end portion of each extension portion 15b of each torsion spring 15 that elastically biases the side wall 11a is on the upper side. In order not to deviate, it is preferable to form a protrusion 11a1 extending in a direction orthogonal to the connecting rod 9 and protruding inward. Although not shown, the opening on the upper side of the space 22 is closed by a cap 3a made of a flexible elastic body such as rubber similar to the prior art described with reference to FIGS.

  As shown in FIGS. 1 and 2, when the cover member 10 is attached to the first floor case A, the inner surface of the side wall 11 a on the base end side is elastic toward the first floor case A by the torsion spring 15. Therefore, the outer surface of the side wall 11a on the base end side of the cover member 10 is brought into contact with the vertical surface A1b of the first recess A1 to which the receiving frame plate Aa is integrally fixed, with substantially no gap. The

  As described above, if the width of the joint C between the two floor frames A and B is greatly reduced due to the rolling due to the earthquake or the like, the cover member 10 has its base end similar to the cover member 1 described above with reference to FIG. It swings up and swings around the side. In this state, as shown in FIG. 3 corresponding to FIG. 15 described above, the cover member 10 flipped up has the upper edge of the outer surface of the side wall 11a on the base end side of the frame 11 of the first floor case A. Since it abuts on the vertical surface A1b of the first recess A1 and swings around the vicinity of the upper edge, the bottom plate 11e and the bottom wall 11f of the cover member 10 near the proximal side wall 11a slide on the support member 14. The lower edge of the outer surface of the side wall 11a on the proximal end side is away from the vertical surface A1b of the first recess A1 and approaches the connecting rod 9 side. As a result, the bending of the torsion spring 15 increases as shown in FIGS. 3 and 4, so that the urging force of the torsion spring 15 against the proximal side wall 11 a increases.

  When the earthquake ends from this state and the width of the joint C returns to the original state, the cover member 10 returns to a horizontal state in which the lower surface of the tip cover plate 1a is supported by contacting the upper surface of the second floor frame B. However, since the inner surface of the side wall 11a of the cover member 10 is elastically biased toward the first floor housing A side by the torsion spring 15, it separates from the connecting rod 9 as it returns to the horizontal state, and with this, the base end The bottom plate 11e and the bottom wall 11f of the cover member 10 in the vicinity of the side wall 11a on the side slide on the support member 14 and move. Thereby, the upper edge of the outer surface of the side wall 11a on the base end side is not separated from the vertical surface A1b of the first recess A1 of the first floor case A, and the state shown in FIG. 1 when the cover member 10 returns to the horizontal state. Since the outer surface of the side wall 11a on the base end side of the cover member 10 and the vertical surface A1b of the first recess A1 are brought into contact with each other, there arises a problem that the heel of the pedestrian's high heel fits between them. There is no.

  In the first embodiment, the distal end of the extension 15b is brought into contact with the side wall 11a on the base end side of the cover member 10 and elastically moves toward the vertical surface A1b of the first recess A1 of the first floor case A. The reaction force of the torsion spring 15 that urges itself is erected and fixed to the receiving surface A1a of the first recess A1, and is inserted into the insertion hole 11g formed in the bottom wall 11f, so that the cover member 10 is moved to the first floor case A. It is received by using a connecting rod 9 that is slidably engaged, and the side wall 11a on the base end side of the cover member 10 is elastically attached toward the vertical surface A1b of the first recess A1 of the first floor case A. Since the mechanism for biasing is substantially only the torsion spring 15, the structure of the biasing mechanism can be greatly simplified.

  In the first embodiment, the torsion spring 15 is inserted into the space portion 12 and is subjected to initial deflection in the process of assembling, and the side wall 11a on the base end side of the cover member 10 is elastically applied to the vertical surface A1b of the first floor case A. Since the urging force that presses the urging force is generated, there is a problem that it is difficult to assemble the torsion spring 15 when it is necessary to increase the urging force. The first modification shown in FIGS. 5 to 8 solves such a problem. In this first modification, a spacer 17 is used in which chamfered portions that are half or more of the plate thickness are provided at two corners that are diagonal to each other in the cross section of a square steel plate. First, after assembling the torsion spring 15 in the same manner as in the first embodiment described above, as shown in FIG. 5, the spacer 17 is arranged along the inner surface of the side wall 11a on the base end side so that the chamfered portion is on the torsion spring 15 side. Then, the driving tool T is applied to the rear edge of the spacer 17 and inserted between the inner surface of the side wall 11a and the tip of each extension portion 15b of the torsion spring 15 (see the lower half of FIGS. 5 and 6). As a result, the torsion spring 15 is elastically deformed by the thickness of the spacer 17, and the urging force that elastically presses the side wall 11 a on the base end side of the cover member 10 against the vertical surface A 1 b of the first floor case A increases.

  Further, after the spacer 17 already inserted, a second spacer 17 is applied as shown by a two-dot chain line 17b in FIG. 5, and the spacer 17 is inserted between the spacer 17 already inserted by the driving tool T and the inner surface of the side wall 11a. Since the torsion spring 15 is further elastically deformed (see the upper half of FIG. 6), the urging force for elastically pressing the side wall 11a on the base end side of the cover member 10 against the vertical surface A1b of the first floor case A is further increased. Increase. By selecting the thickness and the number of spacers 17 to be inserted between the inner surface of the side wall 11a and the tip of each extension portion 15b of the torsion spring 15, the side wall 11a on the base end side of the cover member 10 is perpendicular to the first floor case A. The biasing force that elastically presses the surface A1b can be arbitrarily adjusted. Therefore, even if the initial deflection at the time of assembly to reduce the assembly of the torsion spring 15 is reduced, a biasing force that elastically presses the proximal side wall 11a against the vertical surface A1b by inserting the spacer 17 is desired. Value. 7 and 8 show a partial cross-sectional view and a partial plan view of the first modification in a state where the cover member 10 is flipped up. Although not shown, when a through hole is provided near the upper edge of the spacer 17, the spacer 17 can be easily pulled out by hooking the tip of the extraction tool (not shown) of the spacer 17 to the through hole. it can.

  In the first embodiment and the first modification described above, the torsion spring 15 is provided immediately above the bottom wall 11f of the cover member 10, and the center of swinging when the cover member 10 is flipped up is provided. Since it is separated downward from the upper edge of the outer surface of the side wall 11a on the base end side of the frame 11, the elastic deformation of the torsion spring 15 caused by this swinging is increased. For this reason, if the spring constant of the torsion spring 15 is increased, the torsion spring 15 may sag when the cover member 10 is flipped up, and the elastic force that urges the cover member 10 toward the first floor housing A may decrease. There is. The second modification shown in FIG. 9 solves such a problem. In the second modification, a cylindrical raising member 18 is provided below the torsion spring 15A to increase the position of the torsion spring 15A. The spring constant of the torsion spring 15A is the same as that of the first embodiment and the first embodiment. It is larger than the torsion spring 15 of the modified example. A retaining member (cap nut) 16 is screwed and fixed to the upper end portion of the connecting rod 9 passing through the torsion spring 15 </ b> A with the raising member 18.

  In the second modified example, the torsion spring 15A approaches the upper edge of the outer surface of the side wall 11a on the base end side of the frame 11 which becomes the center of swinging when the cover member 10 is flipped up by increasing the position. If the swing angle when the cover member 10 is flipped up is approximately the same, the elastic deformation of the torsion spring 15A caused by the swing is small. Accordingly, even when the torsion spring 15A having a large spring constant is used, no sag occurs when the cover member 10 is flipped up. Therefore, the base end of the cover member 10 is returned by the torsion spring 15 when the cover member 10 returns to the horizontal state. A predetermined urging force against the side wall 11a can be obtained. Note that a protrusion 11a1 identical to the protrusion 11a1 indicated by a two-dot chain line in FIG. 1 is formed on the proximal end side wall 11a of the second modification, and the same two spacers 17 as in the first modification are provided. A projection 17a that engages with the projection 11a1 is formed on the plate. In this way, the position of each spacer 17 becomes stable.

  In the third modification shown in FIG. 10, the raising member 18 provided on the bottom wall 11f has a low height, and the torsion spring 15, the second raising member 18a, and the second torsion spring are provided thereon. 15A are provided in an overlapping manner, the connecting rod 9 passes through them, and a retaining member 16 is screwed and fixed to the upper end portion thereof. According to the third modification, the two torsion springs 15 and 15A are independently operated, and the side wall 11a on the base end side of the cover member 10 is moved to the vertical surface of the first recess A1 of the first floor case A. The elastic biasing toward A1b can increase the biasing force against the side wall 11a on the base end side, and the second raising member 18a is interposed between the two torsion springs 15 and 15A. Therefore, it is possible to avoid problems such as entanglement of the two torsion springs 15 and 15A.

  In the third modification, the spring constant of the upper torsion spring 15A is made larger than the spring constant of the lower torsion spring 15. In this way, the upper second torsion spring 15A is lowered. Since the torsion spring 15 is less bent when the cover member 10 is flipped up than the torsion spring 15 on the side, no sag occurs even if the spring constant is increased. Therefore, when returning to the horizontal state, the urging force of the upper torsion spring 15A against the side wall 11a on the base end side of the cover member 10 can be made larger than that on the lower side torsion spring 15, thereby The urging force against 11a can be further increased.

  Next, the second embodiment shown in FIGS. 11 to 13 will be described. In the first embodiment and the modifications thereof described above, the connecting rod 9 is erected and fixed to the receiving surface A1a of the first recess A1 of the first floor case A, and is formed on the base end side of the cover member 10. The connecting rod 9 is inserted into the insertion hole 11g formed in the bottom wall 11f of the space portion 12 from the lower side, and the lower surface on the base end side of the cover member 10 is placed on the receiving surface A1a and supported in a swingable manner. Later, the torsion springs 15, 15 </ b> A are installed from the upper side in the space 12 of the cover member 10, and the cover member 10 is urged toward the vertical surface A <b> 1 b side of the first recess A <b> 1 to prevent the connection rod 9 from coming off at the upper end. The member 16 is fixed by screwing. In contrast, in the second embodiment described below, a plurality of urging force transmission members 25 are interposed between the first floor case A and the cover member 20. In the second embodiment, first, each urging force transmission member 25 is placed on the receiving surface A1 of the first recess A1, and the torsion spring 15 provided between the connecting rod 9 and the vertical direction of the first recess A1. The cover member 20 is elastically biased toward the surface A1b, and the side wall 21a on the base end side of the cover member 20 is inserted between the biasing force transmission member 25 and the vertical surface A1b from above, and the base end side of the cover member 20 is set to the first end. It is supported on the receiving surface A1 of the recess A1.

  As shown in FIGS. 11 to 13, the frame 21 of the cover member 20 includes a rectangular bottom plate 21 e and a base end side that determines the thickness of the cover member 20 by raising the lower edge to the four sides of the bottom plate 21 e and rising at a right angle. Side wall 21a, distal side wall 21b (same as side wall 2b shown in FIG. 18 of the prior art), left and right side walls 2c, near both ends of side wall 21a on the base end side, and left and right side walls 21c A plane in which both ends are connected between the vicinity of the base end portion and the upper edge is located at a position lower than the upper edge of each of the side walls 21a to 21c and the space portion 22 is formed between the side wall 21a on the base end side and the side walls 21c. It is formed by a partition wall 21d bent in an L shape in view and an intermediate bottom plate 21f that closes the upper side of the space 22. Of the space formed by the bottom plate 21e and the side walls 21a to 21c, the portion excluding the space 22 formed by the partition wall 21d and the intermediate bottom plate 21f and the lower side being released is filled with mortar or the like as in the above-described conventional technology. It is filled with a pavement material 23 made of a floor finish material such as wood and tile. The outer side of the side wall 21b on the front end side of the frame 21 is fixed to the short side of the front end cover plate 1a having an L-shaped cross section, as in the prior art, and the long side is from the upper edge to the base end side. It extends in the opposite direction. The material of the frame 21 and the tip cover plate 1a is a steel plate and is joined by welding or bolting.

  The urging force transmission member 25 includes a bottom wall 25a and a rising wall 25b that are bent at right angles to each other, and a reinforcing wall 25c that connects both the walls 25a and 25b. The bottom wall 25a is orthogonal to the rising wall 25b. An elongated hole-like insertion hole 25d is formed, and an upper edge of the rising wall 25b is formed with a guide inclined portion 25b1 bent to the bottom wall 25a side at an obtuse angle, and the space of the frame 21 with a slight gap. It can be inserted into the portion 22 from below. Each urging force transmission member 25 is placed on the receiving surface A1 of the first recess A1 so that each connecting rod 9 passes through the insertion hole 25d of the urging force transmission member 25, and the rising wall 25b is the first recess A1. It is slidable between a position where it abuts on the vertical plane A1b and a position away from it.

  Each torsion spring 15 has the same shape as described in the first embodiment, and is positioned above the bottom wall 25a of each urging force transmission member 25. Like the case of the first embodiment, each torsion spring 15 is placed in the helical winding portion 15a. Each connecting rod 9 is inserted and elastically deformed so that the two extending portions 15b are rotated in opposite directions around the connecting rod 9 from the free state to the position indicated by the solid line, and the distal end portion of each extending portion 15b Is applied to the inner surface of the rising wall 25b of the urging force transmitting member 25 to apply an elastic pressing force, and the inner periphery of the winding portion 15a that hangs a part of the outer peripheral surface of the connecting rod 9 opposite to the joint C. The outer surface of the rising wall 25b of the urging force transmission member 25 is elastically directed toward the vertical surface A1b of the first recess A1 of the first floor case A. Is energized.

  Thus, the urging force transmission member 25 is placed on the receiving surface A1a of the first recess A1 of the first floor case A, and the outer surface of the rising wall 25b is directed to the vertical surface A1b of the first recess A1 by the torsion spring 15. In an elastically biased state, the outer surface of the side wall 21a on the base end side of the cover member 20 is brought into contact with the vertical surface A1b of the first recess A1. Then, the cover member 20 is moved downward so that the lower edge of the side wall 21a on the base end side is brought into contact with the guide inclined portion 25b1 of the rising wall 25b of the biasing force transmitting member 25, and is applied against the biasing force by the torsion spring 15. The force transmission member 25 is retracted and the proximal side wall 21a is inserted between the vertical surface A1b of the first recess A1 of the first floor case A and the rising wall 25b of the urging force transmission member 25, and the proximal side wall 21a is inserted. The side wall 21a is elastically biased to the rising wall surface of the first recess A1 of the first floor case A via the biasing force transmission member 25, and the cover member is placed on the receiving surface of the first recess A1 of the first floor case A. By mounting the lower surface of the base end side of 20 to support the cover member 20 so that the cover member 20 can swing around the base end side, the assembly of the second embodiment is completed.

  As described above, if the width of the joint C between the two floor frame bodies A and B is greatly reduced due to the rolling due to the earthquake or the like, the cover member 20 is greatly swung around the base end side and flipped up. In this state, as shown in FIG. 12, the cover member 20 has the upper edge of the outer surface of the side wall 21a on the base end side of the frame 21 in contact with the vertical surface A1b of the first recess A1 of the first floor case A. Since it swings around the edge, the lower edge of the proximal side wall 21a slides on the support member 14 (see FIG. 11) of the receiving surface A1a of the first recess A1 so as to be separated from the vertical surface A1b. The force transmission member 25 is pushed and moved by the lower edge of the proximal side wall 21a. As a result, the deflection of the torsion spring 15 increases, so that the biasing force by the torsion spring 15 transmitted to the side wall 21a on the base end side via the biasing force transmitting member 25 increases.

  When the earthquake ends from this state and the width of the joint C returns to the original state, the cover member 20 returns to a horizontal state in which the lower surface of the tip cover plate 1a is supported by contacting the upper surface of the second floor frame B. However, since the inner surface of the rising wall 25b of the urging force transmission member 25 is elastically urged toward the first floor housing A by the torsion spring 15, it separates from the connecting rod 9 as it returns to the horizontal state. At the same time, the bottom plate 21e of the cover member 20 near the lower edge of the side wall 21a on the base end side slides on the support member 14 and moves. As a result, the upper edge of the outer surface of the side wall 21a on the proximal end side does not leave the vertical surface A1b of the first recess A1 of the first floor case A, and the state shown in FIG. 11 when the cover member 20 returns to the horizontal state. Therefore, the problem that the heel of the pedestrian is caught between the outer surface of the side wall 21a on the base end side of the cover member 20 and the vertical surface A1b of the first recess A1 does not occur.

  Further, in this second embodiment, the space portion 22 of the frame 21 of the cover member 20 is closed on the upper side by the intermediate bottom plate 21f and released on the lower side, and each urging force transmission inserted into the space portion 22 from the lower side. Since the connecting rod 9 is inserted into the insertion hole 25d of the member 25 and engaged with the first floor case A, the frame 21 of the cover member 20 can be filled with the pavement material 23 on the entire upper surface. Since the tip of the second recess B1 on the second floor frame B following the tip of the tip can be concealed by the tip cover plate 1a, the appearance of the floor joint cover device can be further improved.

  In the second embodiment, the outer surface of the rising wall 25b of the urging force transmission member 25 is in contact with the vertical surface A1b of the first recess A1 and is set so as to be elastically urged by the torsion spring 15. The side wall 21a on the base end side of the cover member 20 is inserted between the vertical surface A1b of the first recess A1 of the first floor case A and the rising wall 25b of the urging force transmission member 25, so that the torsion spring 15 is attached. More than the state where the force transmission member 25 is set, the thickness of the side wall 21a of the cover member 20 bends excessively, and the force that presses the outer surface of the side wall 21a of the cover member 20 against the vertical surface A1b of the first recess A1 is that much. Increase. Therefore, as in the case of the first modification of the first embodiment, even if the initial deflection at the time of assembly is reduced in order to facilitate the assembly of the torsion spring 15, it is attached to the vertical surface A1b of the first recess A1. By inserting the side wall 21a of the cover member 20 between the rising walls 25b of the force transmission member 25, it is possible to recover the decrease in the urging force that elastically presses the proximal side wall 21a against the vertical plane A1b. Then, if a plate-like spacer is fixed to the inner surface of the side wall 21a on the base end side corresponding to each urging force transmission member 25, and the thickness and the number of the spacers and the length of the guide inclined portion 25b1 of the urging force transmission member 25 are adjusted, The magnitude of the force that presses the outer surface of the side wall 21a of the cover member 20 against the vertical surface A1b of the first recess A1 can be set to a desired value.

  In each of the above embodiments, the connecting rod 9 made of hexagonal bolts is provided on the receiving surface A1a of the first recess A1, and the connecting rod 9 is a side wall 11a that becomes the base end side of the frames 11, 21 of the cover members 10, 20. Although it was made to insert into the space parts 12 and 22 formed inside 21a from the lower side, the present invention is not limited to this, and a nut is fixed to the receiving surface A1a of the first recess A1 to cover the cover. The base end portions of the frames 11 and 21 of the members 10 and 20 are placed on the receiving surface A1a of the first recess A1, and the connecting rod 9 made of a hexagonal bolt inserted through the torsion springs 15 and 15A is placed in the space portions 12 and 22. The screw may be screwed onto the nut from the upper side through the insertion hole 11g, and the same function and effect can be obtained even in this case.

DESCRIPTION OF SYMBOLS 1a ... End part cover plate, 9 ... Connecting rod, 10, 20 ... Cover member, 11, 21 ... Frame, 11a, 21a ... Base end side wall, 11b, 21b ... End side wall, 11c, 21c ... Left and right Both side walls, 11d, 21d ... partition wall, 11e, 21e ... bottom plate, 11f ... bottom wall, 11g ... insertion hole, 12, 22 ... space, 13, 23 pavement, 15 ... torsion spring, 15A ... second torsion Spring, 15a, 15Aa ... helical winding, 15b, 15Ab ... extension, 17 ... spacer, 18 ... raised member, 18a ... second raised member, 21f ... intermediate bottom plate, 25 ... urging force transmitting member, 25a ... Bottom wall, 25b ... rise wall, 25b1 ... guide slope, 25d ... insertion hole, A ... first floor housing, A1 ... first recess, A1a ... receiving surface, A1b ... vertical surface, B ... second floor housing, B1 ... Second recess, B a ... bottom, B1b ... inclined surface, C ... joints.

Claims (7)

At least one is installed on the ground via a seismic isolation device, and includes a first and second floor frame facing each other in a horizontal direction with a joint having a predetermined width, and a cover member having a box-shaped frame and covering the joint. ,
The upper surface of the first floor frame is composed of a receiving surface and a vertical surface rising from one side edge along the joint, and is substantially the same as the thickness of the base end portion of the cover member on the first floor frame side. Forming a stepped first recess having a depth and fixing a plurality of connecting rods upright on the receiving surface;
On the upper surface of the second floor frame, a second recess having a width substantially the same as the thickness of the tip of the cover member along the joint and wider than the first recess is formed,
The cover member has a lower surface on the base end side on the receiving surface of the first recess so that the connecting rod is inserted into and engaged with a space formed inside the side wall on the base end side of the frame. Is supported so as to be able to swing around the base end side, and the distal end portion of each cover member is supported in the second recess so as to be movable in the horizontal direction,
In the floor joint cover device in which an inclined surface having an upward slope toward the upper surface of the cover member or the second floor frame is formed on at least one of the tip of the cover member and the tip of the second recess facing the cover member,
A plurality of torsion springs composed of a plurality of helical winding parts made of elastic metal wires and two extension parts extending at both ends thereof in a direction perpendicular to the central axis of the helical winding part,
The torsion spring is provided in the space so that the connecting rod is inserted into the helical winding, and the torsion spring is elastically arranged so that the two extension portions are rotated in opposite directions around the connecting rod. The distal end portion of each extension portion is in contact with the inner surface of the side wall on the proximal end side and applies an elastic pressing force thereto, and a part of the outer peripheral surface of the connecting rod opposite to the joint is the portion The side wall on the base end side is elastically urged toward the vertical surface of the first recess so as to contact a part of the inner periphery of the helical winding portion and receive the reaction force of the elastic urging force. A floor joint cover device characterized by that. The floor joint cover device according to claim 1,
The frame of the cover member is fixed to the rectangular bottom plate at right angles to the base end side and the left and right side edges of the base plate, and surrounds the three sides of the base plate to determine the thickness of the cover member. Between the side walls and the left and right side walls, the side wall on the front end side fixed to the side edge on the front end side of the bottom plate, and between the vicinity of both end portions of the side wall on the base end side and the base end portions of the left and right side walls. A partition wall that is connected at both ends to form the space portion between the base-side side wall and both side walls, and a bottom wall that has an insertion hole through which the connecting rod passes to close the lower side of the space portion. Shall be
Of the space formed by the side walls on the upper side of the bottom plate, the portion excluding the space portion formed by the partition wall and the bottom wall is filled with a paving material,
A floor joint cover device, wherein a distal end cover plate extending in a direction opposite to the base end side from an upper edge thereof is fixed to the distal end side wall. In the floor joint cover device according to claim 1 or 2,
A floor joint cover device, wherein at least one plate-like spacer is detachably inserted between a distal end portion of each extension portion of the torsion spring and an inner surface of a side wall on the proximal end side of the cover member. In the floor joint cover device according to any one of claims 1 to 3,
A floor joint cover device, wherein a raised member is provided below the torsion spring to raise the position of the torsion spring. In the floor joint cover device according to any one of claims 1 to 4,
On the upper side of the torsion spring, the connecting rod is formed of a similar helical winding portion and extension portion, and the connecting rod is inserted into the helical winding portion, and the distal end of the extension portion comes into contact with the side wall on the proximal end side of the cover member. A floor joint cover characterized in that a second torsion spring that elastically biases toward the vertical surface of the first recess is provided, and a second lifting member is interposed between the two torsion springs. apparatus. The floor joint cover device according to claim 5,
A floor joint cover device, wherein a spring constant of an upper torsion spring is made larger than a spring constant of a lower torsion spring. The floor joint cover device according to claim 1,
The frame of the cover member is fixed to the rectangular bottom plate at right angles to the base end side and the left and right side edges of the base plate, and surrounds the three sides of the base plate to determine the thickness of the cover member. Between the side walls and the left and right side walls, the side wall on the front end side fixed to the side edge on the front end side of the bottom plate, and between the vicinity of both end portions of the side wall on the base end side and the base end portions of the left and right side walls. A partition wall that is connected at both ends and whose upper edge is lower than the upper edge of each side wall to form the space portion between the side wall on the base end side and both side walls, and closes the upper side of the space portion Consisting of an intermediate bottom plate,
Of the space formed by the bottom plate and the side walls, the portion excluding the space portion formed by the partition wall and the intermediate bottom plate and released at the lower side is filled with a paving material,
Further, a tip cover plate fixed to the side wall on the tip end side and extending in the opposite direction from the base end side from the upper edge thereof;
The bottom wall is formed with an L-shaped bent wall and a rising wall. An insertion hole is formed in the bottom wall, and a guide inclined portion bent toward the bottom wall at an obtuse angle is formed on the upper edge of the rising wall. An urging force transmission member that can be inserted into the space portion of the frame from below;
The urging force transmitting members are placed on the receiving surface of the first recess so that the connecting rods pass through the insertion hole, and the rising wall abuts the vertical surface of the first recess. Slidable between positions away from it,
Each of the torsion springs is positioned above the bottom wall of the urging force transmission member so that the connecting rod is inserted into the helical winding portion, and the two extensions are opposite to each other around the connecting rod. The torsion spring is elastically deformed so as to be rotated, and the distal end portion of each extension abuts against the inner surface of the rising wall of the urging force transmission member to apply an elastic pressing force to the outer periphery of the connecting rod. A part of the surface opposite to the second floor frame is in contact with a part of the inner periphery of the helical winding part to receive the reaction force of the elastic urging force, so that the rising wall Elastically biased toward the vertical surface of
The cover member abuts the outer surface of the side wall on the base end side against the vertical surface of the first recess of the first floor frame, and moves downward so that the lower edge of the side wall on the base end side is the biasing force transmitting member. Abutting against the guide portion of the rising wall, and retreating the biasing force transmission member against the biasing force of the torsion spring and inserting between the vertical surface of the first recess and the rising wall of the biasing force transmission member, The side wall on the base end side is elastically biased to the rising wall surface of the first recess of the first floor frame via the biasing force transmission member, and the base of the cover member is placed on the receiving surface of the first recess. A floor joint cover device characterized by being supported so as to be able to swing around the base end side by placing a lower surface on the end side.

Images