JP2008144373A - Expansion joint handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion joint handrail which realizes a smooth telescopic motion by suppressing deformation caused by small bending occurring mainly in two directions, that is, a breadthwise direction and a vertical one, and which can make the telescopic motion smoother by reducing a coefficient of friction of a sliding contact portion. <P>SOLUTION: This expansion joint handrail 20 is constituted in a such a manner as to be longitudinally expanded/contracted by means of a one tubular fixed panel 23, a tubular intermediate panel 24 and the other tubular fixed panel 25. A fitting and insertion side and a side subject to fitting and insertion are connected to each other in such a manner as to enable longitudinal relative displacement and disable breadthwise-direction and vertical relative displacement by a connecting means 46 which is composed of first and second longitudinally-elongated connecting mechanisms 47 and 48. A sliding material 63 with a low coefficient of friction is interposed between a bottom on the fitting and insertion side, and a bottom on the side subject to fitting and insertion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an expansion joint handrail that can be suitably implemented as a handrail for a crossing passage provided between two adjacent buildings.

  FIG. 13 is a plan view showing a conventional expansion joint handrail 1, 1, and FIG. 14 is a front view showing a conventional expansion joint handrail 1, 1. Are listed. That is, in order to prevent the fall of a passerby and the fall of an object by connecting the passage walls 5 and 5 in the communication passages 4 and 4 of the left and right buildings 3 and 3 built via the joint portion 2, Are provided on both front and rear sides in the direction of travel.

  The expansion joint handrails 1 and 1 have rear end portions attached to the wall surfaces 5a and 5a at the joint end portions of one of the passage walls 5 and 5 by the one side mounting brackets 6 and 6 so that the front end portion can be rotated in the horizontal direction. The attached cylindrical one side fixed side walls 7 and 7, the cylindrical sliding walls 8 and 8 whose front ends protrude from the front end portions of the one side fixed side walls 7 and 7, and the sliding walls 8 and 8, respectively. 8, the rear end portion is connected to the wall surface 5a, 5a of the joint portion end of the other passage wall 5, 5 so that the front end portion can be rotated in the horizontal direction. , 9 and the other side fixed side walls 10, 10 attached to each other, and one end mounted in the one side fixed side walls 7, 7 and the other end attached to the other side fixed side walls 10, 10. 8 and 8 are always in the middle of the fixed side walls 7 and 7 and the fixed side walls 10 and 10 on the other side. It is composed of a pantograph-type link mechanism 11, 11 to be positioned in part. A commonly used floor joint device (not shown) is installed between the floor surfaces of the communication passages 4 and 4 of the left and right buildings 3 and 3.

  As shown in FIGS. 13 and 14, the expansion joint handrails 1, 1 having the above-described configuration normally project the sliding walls 8, 8 by about half the longitudinal dimension from the distal end portions of the one-side fixed side walls 7, 7. At the same time, the distal end portions of the other side fixed side walls 10 and 10 are maintained in a standard state where they are inserted into the sliding walls 8 and 8 by approximately half the longitudinal dimension.

  When the buildings 3 and 3 are relatively displaced in the direction of approaching and separating from each other due to a sudden earthquake and the joint portion 2 is narrowed, the sliding walls 8 and 8 are placed in the one side fixed side walls 7 and 7 as shown in FIG. When the other side fixed side walls 10 and 10 are inserted into each other to absorb the relative displacement in the direction in which the buildings 3 and 3 approach each other and the joint portion 2 becomes wider, the one side fixed side is fixed as shown in FIG. The sliding walls 8 and 8 and the other fixed side walls 10 and 10 protrude from the side walls 7 and 7 respectively, and absorb the relative displacement of the buildings 3 and 3 in the direction of separation. The sliding walls 8 and 8 and the other side fixed side walls 10 and 10 have the same amount of protrusion of the sliding walls 8 and 8 and the amount of protrusion of the other side fixed side walls 10 and 10 by the link mechanisms 11 and 11. It is set to become.

  Further, when the left and right buildings 3 and 3 in FIG. 13 are relatively displaced in the front-rear direction different from each other, as shown in FIG. 17, the distal end portions of the one side fixed side walls 7 and 7 and the other side fixed side walls 10 and 10 are By rotating in the horizontal direction, the relative displacements of the buildings 3 and 3 in different front and rear directions are absorbed. Thereby, even if an earthquake occurs, the front and rear sides of the joint portion 2 are not opened, thereby ensuring the safety of passers-by.

Japanese Patent No. 3328200.

  This type of expansion joint handrail has a straight line on the projection plane and a vertical stand without the one side fixed side wall, the sliding wall, and the other side fixed side wall being bent and deformed in two directions, the width direction and the vertical direction. Smooth expansion and contraction can be realized by expanding and contracting along the horizontal line on the surface. However, the expansion joint handrail described in Patent Document 1 has only a structure in which one side fixed side wall, a sliding wall, and the other side fixed side wall are simply incorporated in a nested manner. Therefore, between the one side fixed side wall and the sliding wall and between the sliding wall and the other side fixed side wall, the expansion and contraction direction of the expansion joint handrail and the two directions in the front-rear direction perpendicular to the expansion and contraction direction in a horizontal plane, In other words, the expansion joint handrail is deformed by small bending mainly in the width direction and the vertical direction, preventing the expansion and contraction movement along a straight line on the projection plane and a horizontal line on the projection elevation surface. It will expand and contract while rattling. If it expands and contracts in this way, the smooth engagement is caused between the one side fixed side wall and the sliding wall or between the sliding wall and the other side fixed side wall. There is a problem of low reliability for realizing a flexible telescopic operation.

  Note that the expansion joint handrail described in Patent Document 1 has one end attached to the one side fixed side wall and the other end attached to the other side fixed side wall, so that the sliding wall is always one side fixed side wall and the other side fixed side wall. Is provided with a pantograph-type link mechanism that is positioned at substantially the center. However, it cannot be expected that the expansion joint handrail can be smoothly expanded and contracted by this link mechanism while suppressing the deformation of the expansion joint handrail caused by small bending in the two directions of the width direction and the vertical direction.

  Further, in the expansion joint handrail described in Patent Document 1, the bottom portion of the sliding wall is placed on the bottom portion of the one side fixed side wall and is in sliding contact with the bottom portion of the other side fixed side wall. Therefore, it can be said that the friction coefficient of the sliding contact portion is relatively large. This also has the disadvantage that smooth expansion and contraction cannot be expected.

  The present invention solves such problems, and the object of the present invention is to realize a smooth expansion and contraction operation by suppressing deformation caused by small bending mainly occurring in two directions of the width direction and the vertical direction. Another object of the present invention is to provide an expansion joint handrail capable of making the expansion and contraction operation smoother by reducing the friction coefficient of the sliding contact portion.

The present invention relates to a cylindrical fixed panel, a cylindrical intermediate panel fitted into the fixed panel so as to protrude in the longitudinal direction from the tip end side of the fixed panel, and the intermediate panel A handrail unit that extends and contracts in the longitudinal direction is configured by the other cylindrical fixed panel that is fitted and inserted into the intermediate panel so as to appear and disappear from the distal end side in the longitudinal direction,
The base end portion of the one fixed panel of the handrail unit and the base end portion of the other fixed panel are adjacent to each other and are relatively displaced, and straddle the structure that is pivotally connected around the vertical axis by a hinge. Garu expansion joint railing,
The one fixed panel, the intermediate panel, and the other fixed panel can be relatively moved in the longitudinal direction by a connecting means extending in the longitudinal direction between the fitting insertion side and the fitted insertion side, and can be relatively moved in the width direction and the vertical direction. Being interconnected impossible,
An expansion joint handrail characterized in that a sliding material is interposed between the bottom portions of the insertion side and the insertion side.

  According to the present invention, the connecting means is fitted such that a rail portion extending in the longitudinal direction formed on one of the fitting insertion side and the fitting insertion side and the rail portion is movably fitted in the longitudinal direction. It is characterized by comprising a pair of guide groove portions extending in the longitudinal direction formed on the other of the insertion side and the insertion side.

  Further, in the present invention, the intermediate panel is provided with an interfering body that interferes with a stopper portion provided on the one fixed panel and prevents the intermediate panel from being detached from the tip of the one fixed panel. It is characterized by.

  Further, the present invention is characterized in that the intermediate panel and the other fixed panel are connected to each other by a spring that urges the other fixed panel in a direction in which the other fixed panel is inserted into the intermediate panel.

  Further, according to the present invention, the intermediate panel and the other fixed panel are engaged with each other when the expansion joint handrail is reduced from the standard state, and both the intermediate panel and the other fixed panel are integrally moved in the reduction direction. In addition, when the expansion joint handrail extends after mutual interference between the stopper portion of the fixed panel and the interfering body of the intermediate panel, the engagement is released to allow relative movement in the extending direction of the intermediate panel and the other fixed panel. They are connected to each other by an engagement / disengagement mechanism.

  According to the present invention, the one fixed panel, the intermediate panel, and the other fixed panel can be relatively moved in the longitudinal direction by the connecting means extending in the longitudinal direction between the fitting insertion side and the fitted insertion side, and in the width direction and the upper and lower sides. Since the relative movement in the direction is impossible, the one fixed panel, the intermediate panel, and the other fixed panel are surely deformed by small bending mainly occurring in the width direction and the vertical direction. It can be suppressed. Therefore, the expansion joint handrail can be smoothly expanded and contracted along the straight line on the projection plane and the horizontal line on the projection elevation surface without rattling. Further, in one fixed panel, the intermediate panel, and the other fixed panel, a sliding material is interposed between the bottom portions of the insertion side and the insertion side, thereby reducing the friction coefficient of the sliding contact portion. Therefore, an even smoother expansion / contraction operation can be realized.

  According to the invention, the connecting means includes a rail portion extending in the longitudinal direction formed on one of the insertion side and the insertion side, and the rail portion is movably fitted in the longitudinal direction. Since it is composed of a pair of longitudinally extending guide grooves formed on the other side of the insertion and insertion sides, the rail and guide grooves use extruded shapes made of stainless steel or aluminum alloy it can. As a result, the productivity and assembly of the connecting means are improved, and the connecting force on the insertion side and the insertion side is increased, and deformation due to small bending that occurs mainly in the two directions of the width direction and the vertical direction is improved. It is surely suppressed.

  Further, according to the present invention, the intermediate panel is provided with an interference body that interferes with a stopper portion provided on the one fixed panel and prevents the intermediate panel from being detached from the tip of the one fixed panel. Therefore, when each building is relatively displaced in the direction away from a sudden earthquake in the standard state where the intermediate panel is inserted and retracted into the other fixed panel and protrudes from the tip of one fixed panel, The intermediate panel is prevented from being pulled out from the front end of the fixed panel, and the expansion joint handrail is prevented from being disassembled, and the other fixed panel is moved from the front end of the intermediate panel following the relative displacement of each building in the direction of separation. The expansion state of the expansion joint handrail can be maintained by projecting.

  Further, according to the present invention, the intermediate panel and the other fixed panel are connected to each other by the spring that biases the other fixed panel in a direction in which the other fixed panel is inserted into the intermediate panel. In the standard state where the fixed panel is inserted and stored and protrudes from the tip of one fixed panel, only the intermediate panel is prevented from moving in the direction of being stored in one fixed panel, and the intermediate panel is It is possible to maintain the standard state in which the fixed panel is inserted and retracted and protrudes from the tip of one fixed panel. When the expansion joint handrail returns to the standard state following the relative displacement in the direction in which the respective buildings approach from the extended state of the expansion joint handrail in which the other fixed panel protrudes from the tip of the intermediate panel. Can positively insert and store the other fixed panel in the intermediate panel by urging the spring, thereby contributing to the smooth return of the expansion joint handrail to the standard state.

  Further, according to the present invention, the intermediate panel and the other fixed panel are engaged with each other when the expansion joint handrail is reduced from the standard state, and both the intermediate panel and the other fixed panel are integrated in the reduction direction. When the expansion joint handrail extends after mutual interference between the stopper portion of the fixed panel and the interfering body of the intermediate panel, the engagement is released and relative movement in the extending direction of the intermediate panel and the other fixed panel is allowed. In the standard state in which the intermediate panel is inserted into and stored in the other fixed panel and protrudes from the front end of the one fixed panel, the relative positions in the adjacent directions of the buildings are When the expansion joint handrail is reduced following the displacement, the other panel is connected to the other panel by the engagement of the engagement / disengagement mechanism. In a state where the fixed panels are inserted and stored, they can be integrally moved in the reduction direction and can be inserted and stored in one fixed panel. In the standard state, each building is relatively displaced in the direction of separating. When the expansion joint handrail extends following this, the engagement of the engagement / disengagement mechanism is released immediately after the stopper of the fixed panel and the interfering body of the intermediate panel interfere with each other. The expansion joint handrail can be extended by protruding the other fixed panel from the portion.

  Hereinafter, a preferred embodiment of an expansion joint handrail according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of a transition passage 21 to which an expansion joint handrail 20 according to the present invention is applied, and FIG. 2 is a plan view of the expansion joint handrail as viewed from the section line II-II in FIG. In FIG. 1 and FIG. 2, there is a gap C as a joint between two adjacent buildings A and B, and in order to enable passage between the passages A1 and B1 of each building A and B via this gap C. A crossing passage 21 is provided between the buildings A and B. Each building A, B consists of a concrete structure, for example.

  The crossing passage 21 has a width that is perpendicular to the longitudinal direction X (the left-right direction in FIGS. 1 and 2) in which the buildings A and B approach and separate from each other due to an earthquake and the like on the horizontal plane. In order to allow relative displacement that occurs in the direction Y (vertical direction in FIG. 2), an expansion joint structure called an expansion joint is employed.

  Such a crossing passage 21 is erected on both sides of the stretchable floor structure 22 in the width direction Y of the stretchable floor structure 22 and the stretchable floor structure 22 spanned substantially horizontally across the passages A1 and B1 of the buildings A and B. It is comprised with the expansion joint handrail 20 which concerns on.

  The expansion joint handrail 20 includes handrail units 20A and 20B which are erected in parallel with each other on both sides in the width direction Y of the crossing passage 21, and these handrail units 20A and 20B have their longitudinal directions X, that is, One cylindrical fixed panel 23 that expands and contracts in a direction X in which the buildings A and B are brought close to and away from each other due to an earthquake or the like, and the one such that the one protrudes in the longitudinal direction X from the front end side of the one fixed panel 23. A cylindrical intermediate panel 24 inserted into the fixed panel 23 and the other cylindrical fixed panel 25 inserted into the intermediate panel 24 so as to protrude from the distal end side of the intermediate panel 24 in the longitudinal direction X. It consists of.

  The base end portion (the right end portion in FIGS. 1 and 2) of one fixed panel 23 is connected to the column 26 on the other building B side by a pair of upper and lower hinges 27 and 28 so as to be rotatable around a vertical axis. The base end portion (the left end portion in FIGS. 1 and 2) of the other fixed panel 25 is connected to a column 29 on the one building A side by a pair of upper and lower hinges 30 and 31 so as to be rotatable around a vertical axis. .

  The stretchable floor structure 22 is provided between the floors A1a and B1b of the passages A1 and B1 of the buildings A and B. The stretchable floor structure 22 is provided so as to allow relative displacement that occurs in the longitudinal direction X and the width direction Y of the floors A1a and B1b that are close to and away from each other.

  3 is an enlarged front view of the expansion joint handrail unit 20A, FIG. 4 is a plan view of the expansion joint handrail unit 20A as viewed from the section line IV-IV in FIG. 3, and FIG. It is a vertical side view which expands and shows the insertion state of this, and the insertion state of the intermediate | middle panel 24 and the other fixed panel 25. FIG. 3, 4, and 5, one fixed panel 23, intermediate panel 24, and the other fixed panel 25 are each made of a stainless steel plate or an aluminum alloy plate.

  One fixed panel 23 has a rectangular cross section having vertical walls 32 and 33 facing each other in the width direction Y (left and right direction in FIG. 5), and a top plate 34 and a bottom plate 35 facing each other in the vertical direction Z in FIG. It has a rectangular tube shape, its distal end portion (left end portion in FIGS. 3 and 4) is open, and its base end portion (right end portion in FIGS. 3 and 4) is closed by a closing plate 36. The movable pieces of the pair of hinges 27 and 28 are fastened to 36. Further, as shown in FIG. 6, bent portions 32 a and 33 a that are bent in a hook shape toward the inner side in the width direction and the base end side in the longitudinal direction are formed on the vertical walls 32 and 33 at the leading end portions that are open. ing.

  3, 4, and 5, the intermediate panel 24 is a rectangular tube having a rectangular cross section that is fitted into one fixed panel 23 so as to be movable in the longitudinal direction X (left and right in FIG. 4). It has vertical walls 37 and 38 that face each other in the width direction Y (left and right direction in FIG. 5), and a top plate 39 and a bottom plate 40 that face each other in the vertical direction Z in FIG. Left end) and the base end (the right end in FIGS. 3 and 4) are open, and the vertical walls 37 and 38 at the leading end are open on the inner side in the width direction and on the base end side in the longitudinal direction. The vertical walls 37 and 38 at the rear end that are bent and opened into hooks 37a and 38a are bent outward in the width direction to form flange portions 37b and 38b as shown in FIG. is doing.

  3 and 4, the other fixed panel 25 is a rectangular tube having a rectangular cross section fitted into the intermediate panel 24 so as to be movable in the longitudinal direction X (left and right direction in FIG. 4). It has vertical walls 41 and 42 that face each other in the direction Y (left and right direction in FIG. 5), and a top plate 43 and a bottom plate 44 that face each other in the vertical direction Z in FIG. 5, and their base ends (FIGS. 3 and 4). Is closed by a closing plate 45, and the movable pieces of the pair of hinges 30 and 31 are fastened to the closing plate 45. Further, as shown in FIG. 6, the vertical walls 41, 42 at the open front end portions are bent outward in the width direction to form flange portions 41a, 42a.

  3, 5, 6, and 7, one fixed panel 23, the intermediate panel 24, and the other fixed panel 25 have a longitudinal direction X (in FIGS. 3 and 6). Relative movement in the longitudinal direction X can be freely performed by the connecting means 46 extending in the left-right direction, and relative movement in the width direction Y (left-right direction in FIGS. 5 and 7) and the vertical direction Z (up-down direction in FIGS. 5 and 7). Impossibly interconnected with each other. The connecting means 46 includes a first connecting mechanism 47 and a second connecting mechanism 48, and the first connecting mechanism 47 includes three rail part / guide groove part composite bodies 49 </ b> A, 49 </ b> B, 49 </ b> C. Consists of an interference rail portion 50 having a function as an interference body and having a short longitudinal dimension and a guide groove member 51 having a long longitudinal dimension. Each of the rail part / guide groove part composite bodies 49A, 49B, 49C is made of an extruded shape made of stainless steel or aluminum alloy, and has the same cross-sectional shape and cross-sectional area. Made of extruded shape of steel or aluminum alloy.

  The first connection mechanism 47 connects the vertical wall 32 on the outer side of one fixed panel 23 and the vertical wall 37 on the outer side of the intermediate panel 24 to each other apart from the upper and lower positions. The wall 37 and the vertical wall 41 outside the other fixed panel 25 are connected to each other. Each of the rail part / guide groove part composites 49A, 49B, 49C constituting the first coupling mechanism 47 is fitted with a T-shaped rail part 49a and the rail part 49a so as to be movable in the longitudinal direction. As described above, the guide groove portion 49b is formed integrally with the base portion side of the rail portion 49a, and has a flat base portion 49c extending on both sides (upper and lower sides in FIG. 7) of the guide groove portion 49b.

  Therefore, the base portion 49c of the rail portion / guide groove portion complex 49A is horizontally fixed to the inner surface of the vertical wall 32 outside the one fixed panel 23 by screws, and the rail portion 49a is the vertical wall outside the intermediate panel 24. 37, the slit 52 formed horizontally extending in the longitudinal direction is penetrated to the inside of the intermediate panel 24, and the base portion 49c straddles the slit 52 on the inner surface of the vertical wall 37 outside the intermediate panel 24. Is inserted into the guide groove portion 49b of the rail portion / guide groove portion composite body 49B, which is horizontally fixed by screwing, so that the rail portion 49a is movable in the longitudinal direction on the vertical wall 41 on the outer side of the other fixed panel 25. The vertical wall 4 on the outside of the other fixed panel 25 is exposed to the inside of the other fixed panel 25 while passing through a slit 52 formed extending horizontally. One of the insertion side is fitted into the guide groove portion 49b of the rail portion / guide groove portion complex 49C in which the base portion 49c is horizontally fixed by screwing across the slit 52 on the inner surface of The fixed panel 23 and the intermediate panel 24 that is the insertion insertion side are connected to each other by the rail portion / guide groove portion composites 49A and 49B, and the intermediate panel 24 that is the insertion insertion side and the other fixation that is the insertion insertion side. The panel 25 is connected to each other by the rail part / guide groove part composite bodies 49B and 49C.

  That is, the first connecting mechanism 47, which is one structure of the connecting means 46, includes a rail portion 49a formed on one fixed panel 23 on the insertion side and a guide formed on the intermediate panel 24 on the insertion side. A pair of the groove portion 49b and a pair of the rail portion 49a formed on the intermediate panel 24 on the insertion side and the guide groove portion 49b formed on the other fixed panel 25 on the insertion side are provided apart from each other in the upper and lower positions. It is composed by being.

  The second coupling mechanism 48 separates the vertical wall 33 on the inner side of the intermediate panel 24 and the vertical wall 33 on the inner side of the intermediate panel 24 by separating the upper and lower three positions. The interference rail portion 50, which is one of the constituent members of the second coupling mechanism 48 and has a short longitudinal dimension, has a substantially channel-like cross-sectional shape, and is separated from the three upper and lower positions so as to extend vertically inside the intermediate panel 24. In the vicinity of the flange portion 38b at the rear end portion on the outer surface of the wall 38, it is fixed horizontally by bolt fastening. Further, the guide groove member 51 having a long longitudinal dimension, which is the other constituent member of the second coupling mechanism 48, has a square C-shaped cross-sectional shape into which the interference rail portion 50 is movably fitted in the longitudinal direction. Separated from the upper and lower three positions corresponding to the fixing position of the interference rail portion 50, it is horizontally fixed to the inner surface of the vertical wall 33 inside the one fixed panel 23 by spot welding or the like. That is, the second connecting mechanism 47, which is the other structure of the connecting means 46, has a pair of the interference rail portion 50 fixed to the intermediate panel 24 and the guide groove member 51 fixed to one fixed panel 23 vertically. It is configured by being provided apart at three positions.

  3, 4, 5, and 6, the intermediate panel 24 and the other fixed panel 25 are connected to each other by a spring 53 that biases the other fixed panel 25 in a direction in which the other fixed panel 25 is inserted into the intermediate panel 24. The The springs 53 are provided apart from each other in the upper and lower positions. The springs 53 include a first coil spring 54 and a second coil spring 55 that function as a pulling spring, and their base ends are connected to each other by a connecting ring 56. The tip of one coil spring 54 is locked to an L-shaped mounting slope 57 fixed to the inner surface of the closing plate 45 of the other fixed panel 25 by, for example, spot welding, and the tip of the second coil spring 55 is An L-shaped member that is fixed to the inner surface of the horizontal member 58 that is horizontally fixed by welding across the flange portions 37b and 38b at the rear ends of the vertical walls 37 and 38 of the intermediate panel 24, for example, by spot welding. Locked to the mounting slope 59.

  3 and 4, the intermediate panel 24 and the other fixed panel 25 are connected to each other by an engagement / disengagement mechanism 60 provided so as to be separated from the upper and lower positions. The engagement / disengagement mechanism 60 includes one engagement / disengagement member 61 and the other engagement / disengagement member 62, and one engagement / disengagement member 61 is a base fixed to the inner surface of the rear end portion of the vertical wall 37 outside the intermediate panel 24. Part 61a and a latch 61b that normally protrudes from the base part 61a toward the other engaging / disengaging member 62, and the other engaging / disengaging member 62 is provided on the outer side of the other fixing panel 25. The base portion 62a fixed to the inner surface of the front end portion of the vertical wall 41 and the latch 61b of the one engagement / disengagement member 61 that is recessed on the surface of the base portion 62a facing the engagement / disengagement member 61 can be engaged / disengaged. And a recess 62b that engages with the.

  In order to avoid interference with the rail portion / guide groove portion composite body 49A constituting the first coupling mechanism 47, a part of the flange portion 37b at the rear end portion of the vertical wall 37 on the outer side of the intermediate panel 24 and one of the fixing portions are fixed. A portion of the stopper portion 32a at the distal end of the vertical wall 32 outside the panel 23 is notched (not shown) in order to avoid interference with the long guide groove member 51 constituting the second connecting mechanism 48 in the longitudinal direction. In addition, a part of the flange portion 38 b at the rear end of the vertical wall 38 inside the intermediate panel 24 is notched (not shown), and interference with one engagement / disengagement member 61 constituting the engagement / disengagement mechanism 60 is prevented. In order to avoid this, a part of the flange portion 41a at the tip of the vertical wall 41 on the outside of the other fixed panel 25 is notched (not shown).

  In FIG. 5, a strip-shaped sliding material 63 is interposed between the bottoms of the insertion side and the insertion side. The sliding material 63 is made of a fluororesin material having a small friction coefficient. That is, a strip-shaped sliding material 63 which is bonded to the upper surface of the bottom plate 35 of one fixed panel 23 in the longitudinal direction is interposed between the upper surface of the bottom plate 35 of one fixed panel 23 and the lower surface of the bottom plate 40 of the intermediate panel 24. In addition, a strip-shaped sliding material 63 which is bonded to the upper surface of the bottom plate 40 of the intermediate panel 24 in the longitudinal direction is interposed between the upper surface of the bottom plate 40 of the intermediate panel 24 and the lower surface of the bottom plate 44 of the other fixed panel 25. .

  The expansion joint handrail 20 having the above-described configuration is normally shown in FIGS. As shown in FIGS. 3 and 4, the intermediate panel 24 and the other fixed panel 25 inserted and inserted into the intermediate panel 24 are maintained in a standard state in which most of the longitudinal dimensions of the intermediate panel 24 and the other fixed panel 25 protrude from the front end of the one fixed panel 23. Has been.

  When the buildings A and B are relatively displaced in the direction of approaching and moving away by a sudden earthquake, and the gap C becomes narrower, FIG. As shown in FIG. 9, the intermediate panel 24 in which the other fixed panel 25 is inserted and inserted into the one fixed panel 23 is in a reduced state, and the relative displacement in the direction in which the buildings A and B approach each other is reduced. When absorbed and the gap C becomes wider, FIG. As shown in FIG. 11, the intermediate panel 24 protrudes from one fixed panel 23 and the other fixed panel 25 protrudes from the intermediate panel 24, so that the relative displacement in the direction in which the buildings A and B are separated from each other. To absorb.

  In addition, when the buildings A and B in FIG. 2 are relatively displaced in different longitudinal directions Y, the base end portion of one fixed panel 23 rotates around the vertical axis of the hinges 27 and 28 as shown in FIG. By moving the base end of the other fixed panel 25 around the vertical axis of the hinges 30 and 31, the relative displacements of the buildings A and B in the different front and rear directions are absorbed. Thereby, even if an earthquake occurs, the safety of passers-by is ensured so that the front and rear sides of the gap C are not opened.

  According to the expansion joint handrail 20 of the present invention, the one fixed panel 23, the intermediate panel 24, and the other fixed panel 25 are moved relative to each other in the longitudinal direction by the first connecting mechanism 47 which is one structure of the connecting means 46. The fixed panel 23 and the intermediate panel 24 are connected to each other in a longitudinal direction by a second connecting mechanism 48 which is the other structure of the connecting means 46. Are connected to each other so that relative movement in the width direction and in the vertical direction is impossible. Therefore, the fixed panel 23, the intermediate panel 24, and the other fixed panel 25 are mainly connected to the width direction and the vertical direction, respectively. Deformation caused by small bending in the two directions is reliably suppressed. Therefore, the expansion joint handrail 20 can be smoothly expanded and contracted without rattling along a straight line on the projection plane and a horizontal line on the projection elevation surface. Further, a strip-shaped sliding material 63 which is bonded to the upper surface of the bottom plate 35 of one fixed panel 23 in the longitudinal direction is interposed between the upper surface of the bottom plate 35 of one fixed panel 23 and the lower surface of the bottom plate 40 of the intermediate panel 24. At the same time, a strip-shaped sliding material 63 that is bonded to the upper surface of the bottom plate 40 of the intermediate panel 24 in the longitudinal direction is interposed between the upper surface of the bottom plate 40 of the intermediate panel 24 and the lower surface of the bottom plate 44 of the other fixed panel 25. As a result, the friction coefficient of the slidable contact portion is reduced, so that an even smoother expansion and contraction operation can be realized.

  The first connecting mechanism 47 constituting the connecting means 46 of the present invention includes a rail portion 49a formed on one fixed panel 23 on the insertion side and a guide groove portion formed on the intermediate panel 24 on the insertion side. 49b and a pair of a rail part 49a formed on the intermediate panel 24 on the insertion side and a guide groove part 49b formed on the other fixed panel 25 on the insertion side to constitute the connecting means 46. The second connecting mechanism 48 is composed of a pair of an interference rail portion 50 fixed to the intermediate panel 24 and a guide groove portion 51 fixed to one fixed panel 23, so that it is made of stainless steel or an aluminum alloy. Extruded profiles made of metal can be used. As a result, the productivity and assembly of the connecting means 46 are improved, and the connecting force between the insertion side and the insertion side is increased, and deformation due to small bending occurring mainly in the two directions of the width direction and the vertical direction. Is surely suppressed.

  When the buildings A and B are relatively displaced in a direction away from each other due to a sudden earthquake, when the standard state expands to the extended state, first, the second connection fixed to the vertical wall 38 inside the intermediate panel 24 is performed. The interference rail portion (interference body) 50 having a short longitudinal dimension in the mechanism 48 abuts on a bent portion 33a bent in a hook shape that functions as a stopper portion at the tip of the vertical wall 33 inside the one fixed panel 23. The intermediate panel 24 is prevented from being pulled out from the tip of the one fixed panel 23 due to interference. Therefore, even if each building A, B is relatively displaced in the direction of separating due to a sudden earthquake, if the relative displacement amount in the direction of separating is within the range assumed at the time of design, from the tip of one fixed panel 23 The intermediate panel 24 is pulled out to prevent the expansion joint handrail 20 from being disassembled, and the other fixed panel 25 is moved from the tip of the intermediate panel 24 following the relative displacement of the buildings A and B in the direction of separation. By projecting, the expanded state of the expansion joint handrail 20 can be maintained.

  The intermediate panel 24 and the other fixed panel 25 are provided with a spring 53 that urges the other fixed panel 25 in a direction in which the other fixed panel 25 is inserted into the intermediate panel 24, that is, separated from the upper and lower positions. Are connected to each other by a spring 53 including a first coil spring 54 and a second coil spring 55 functioning as an intermediate panel 24, and the intermediate panel 24 is inserted into and stored in the other fixed panel 25. In the standard state protruding from the intermediate panel 24, only the intermediate panel 24 is prevented from moving in the direction in which it is stored in the one fixed panel 23, and the intermediate panel 24 is inserted and stored in the other fixed panel 25. The standard state of protruding from the tip of the panel 23 can be maintained. Further, the expansion joint handrail 20 follows the relative displacement in the direction in which the buildings A and B approach each other from the extended state of the expansion joint handrail 20 in which the other fixed panel 25 protrudes from the distal end portion of the intermediate panel 24. When returning to the normal position, the other fixed panel 25 is positively inserted into and stored in the intermediate panel 24 by the biasing of the spring 53, thereby contributing to the smooth return of the expansion joint handrail 20 to the standard state. it can.

  Since the intermediate panel 24 and the other fixed panel 25 are connected to each other by an engagement / disengagement mechanism 60 provided so as to be separated from each other in two vertical directions, when the expansion joint handrail 20 is reduced from the standard state, the engagement / disengagement is performed. In the state in which the other fixed panel 25 is inserted into and stored in the intermediate panel 24 in which the engagement state between the latch 61b of the one engaging / disengaging member 61 and the recess 62b of the other engaging / disengaging member 62 in the mechanism 60 is maintained. 24, the other fixed panel 25 can be integrally moved in the shrinking direction and can be fitted into and stored in the one fixed panel 23. In the standard state, the relative displacement in the direction in which the buildings A and B are separated from each other When the expansion joint handrail 20 extends following this, the stopper part 33a of one fixed panel 23 and the interference rail part (interference body) 50 interfere with each other. Was that the engagement between the latch 61b and the recess 62b is released immediately, and the distal end portion of the intermediate panel 24 is projected to the other fixed panel 25, it is possible to extend the expansion joints handrail 20.

  In the above-described embodiment, a description has been given of a configuration in which one intermediate panel 24 is arranged between one fixed panel 23 and the other fixed panel 25, but it is arranged between one fixed panel 23 and the other fixed panel 25. A plurality of intermediate panels 24 may be provided. However, in the configuration in which the plurality of intermediate panels 24 are arranged, it is necessary to insert the intermediate panel on the other fixed panel 25 side from the intermediate panel on the one fixed panel 23 side so as to be able to project and retract in the longitudinal direction.

  The first connecting mechanism 47 in the connecting means 46 is provided in the upper and lower two positions, and the second connecting mechanism 48 in the connecting means 46 is described in the upper and lower three positions. The structure in which the mechanism 47 is provided apart from the upper and lower three positions or the second connecting mechanism 48 may be provided in the upper and lower two positions or the upper and lower four positions or more.

  Although the embodiment has been described in which the spring 53 is provided apart from the upper and lower two positions, the spring 53 may be provided only at one position, or may be provided separately from the upper and lower three positions. Further, the springs 53 provided at the respective positions are not limited to the configuration of the embodiment in which the first coil spring 54 and the second coil spring 55 are connected by the connection ring 56, but one that functions as a tension spring. You may comprise only a coil spring.

  Although the engagement / disengagement mechanism 60 has been described in the embodiment provided apart from the upper and lower positions, a configuration provided only at one position or a structure provided apart from the upper and lower three positions may be employed.

It is a front view of the transfer passage where one embodiment of the present invention is applied. It is the top view seen from the cut surface line II-II of FIG. It is an enlarged front view of an expansion joint handrail. FIG. 4 is a plan view of an expansion joint handrail viewed from a cutting plane line IV-IV in FIG. 3. It is a vertical side view which expands and shows the insertion state of one fixed panel and an intermediate panel, and the insertion state of an intermediate panel and the other fixed panel. It is a plane sectional view expanding and showing the relation between the tip part of one cylindrical fixed panel, and the base end part of a cylindrical middle panel. It is a vertical side view which expands and shows one Embodiment of a connection means. It is a front view which shows the expansion joint handrail when a space | gap is shrink | contracted most by mutual proximity | contact of each building. It is a top view of FIG. It is a front view which shows the expansion joint handrail when a space | gap is expanded most by mutual separation of each building. It is a top view of FIG. It is a top view which shows an expansion joint handrail when each building carries out relative displacement in the mutually different front-back direction. It is a top view of a prior art example. FIG. 14 is a front view of FIG. 13. It is a top view when the joint part of a prior art example is contracted most. It is a top view when the joint part of a prior art example is most expanded. It is a top view when each building of a prior art example carries out relative displacement to the mutually different front-back direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Expansion joint handrail 20A Handrail unit 20B Handrail unit 23 One cylindrical fixed panel 24 Cylindrical intermediate panel 25 The other cylindrical fixed panel 27 Hinge 28 Hinge 30 Hinge 31 Hinge 33a Hook-shaped bending part (stopper part) )
46 connection means 47 first connection mechanism 48 second connection mechanism 49A rail part / guide groove part complex 49B rail part / guide groove part complex 49C rail part / guide groove part complex 49a rail part 49b guide groove part 50 interference rail part (interference body) )
51 Guide groove member 60 Engagement / disengagement mechanism 63 Sliding material A, B Building C Air gap A1, B1 Passage

Claims (5)

One cylindrical fixed panel, a cylindrical intermediate panel fitted into the one fixed panel so as to protrude in and out from the distal end side of the one fixed panel, and the distal end side of the intermediate panel A handrail unit configured to extend and contract in the longitudinal direction is configured by the other cylindrical fixed panel that is fitted and inserted into the intermediate panel so as to appear and disappear in the longitudinal direction,
The base end portion of the one fixed panel of the handrail unit and the base end portion of the other fixed panel are adjacent to each other and are relatively displaced, and straddle the structure that is pivotally connected around the vertical axis by a hinge. Garu expansion joint railing,
The one fixed panel, the intermediate panel, and the other fixed panel can be relatively moved in the longitudinal direction by connecting means extending in the longitudinal direction on the insertion side and the insertion side, and can be relatively moved in the width direction and the vertical direction. Being interconnected impossible,
An expansion joint handrail, wherein a sliding material is interposed between the bottom portions of the insertion side and the insertion side. In the expansion joint handrail according to claim 1,
The connecting means includes a rail portion extending in the longitudinal direction formed on one of the insertion side and the insertion side, and the insertion side and the insertion portion so that the rail portion is movably fitted in the longitudinal direction. An expansion joint handrail comprising a pair of guide grooves extending in the longitudinal direction formed on the other side of the insertion side. In the expansion joint handrail according to claim 1 or claim 2,
An expansion, wherein the intermediate panel is provided with an interference body that interferes with a stopper portion provided on the one fixed panel and prevents the intermediate panel from being detached from the tip of the one fixed panel. Joint handrail. In the expansion joint handrail according to claim 1, claim 2 or claim 3,
The expansion joint handrail, wherein the intermediate panel and the other fixed panel are connected to each other by a spring that biases the other fixed panel in a direction in which the other fixed panel is inserted into the intermediate panel. In the expansion joint handrail according to claim 1, claim 2, claim 3 or claim 4,
The intermediate panel and the other fixed panel are engaged with each other when the expansion joint handrail is reduced from the standard state to move both the intermediate panel and the other fixed panel integrally in the reduction direction, and the fixed When the expansion joint handrail extends after mutual interference between the stopper portion of the panel and the interfering body of the intermediate panel, the engagement is released and the engagement / disengagement mechanism allows relative movement in the extending direction of the intermediate panel and the other fixed panel. An expansion joint handrail characterized by being connected.

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