JP5361754B2 - Telescopic handrail for joints - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion balustrade for a joint, which makes an expansion/contraction operation smooth and is excellent in external beauty. <P>SOLUTION: This expansion balustrade 1 for the joint includes a first fixed panel 10A, an intermediate panel 10B which is fitted and inserted into the first fixed panel 10A in such a manner as to be movable forward and backward, and a second fixed panel 10C which is fitted and inserted into the intermediate panel 10B in such a manner as to be movable forward and backward. First guide rails 22a and 22b in the forward and backward movement directions of the intermediate panel 10B are arranged in the first fixed panel 10A; first rotary rollers 44a and 44b abutting on the first guide rails 22a and 22b to support the rear of the intermediate panel 10B are arranged at the back end of the intermediate panel 10B; second guide rails 46a and 46b in the forward and backward movement directions of the second fixed panel 10C are arranged in the intermediate panel 10B; and second rotary rollers 62a and 62b abutting on the second guide rails 46a and 46b to support the front of the intermediate panel 10B are arranged at the rear end of the second fixed panel 10C. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to joint telescopic handrails arranged at joint positions on the side portions of a passage connecting two building frames across a joint located between adjacent building frames.

  In recent years, in order to keep damage caused by earthquakes to a minimum, many buildings have been constructed that support the lower part with a seismic isolation device having a buffer function.

  In such a base-isolated structure, follow the relative displacement of the two building structures during the earthquake at the joints in the passages, such as a corridor that connects the two building structures across the joints located between adjacent building structures. When a joint cover device is provided, a known floor joint cover device is applied to the floor surface. Moreover, as a thing applicable to the joint position of the side part of a channel | path, the extension handrail for joints which expands and contracts following the relative displacement of both building frames is known (for example, refer patent document 1).

  As shown in FIG. 16, the joint-use telescopic handrail a is fitted into and inserted into the first fixed panel b having a rectangular housing shape and the first fixed panel b so as to be able to advance and retreat. A rectangular case-like intermediate panel c pulled out from the front end side, and a rectangular case-like second fixed panel that is inserted into the intermediate panel c so as to be able to advance and retreat and is drawn out from the front end side of the intermediate panel c d, and the insertion side and the insertion side are relatively moved in the direction along the joint by the connecting means e extending in the longitudinal direction (direction perpendicular to the joint) provided at two upper and lower positions, respectively. It is connected so that relative movement in the direction perpendicular to the joint and in the vertical direction is impossible. Each of the connecting means e includes rail portions f1 and f2 extending in the longitudinal direction provided on the inner side surfaces of the first fixed panel b and the intermediate panel c on the fitted insertion side, and the rail portions f1 and f2, respectively. An intermediate panel c on the insertion side and a guide groove g1 and g2 extending in the longitudinal direction provided on the inner surface of the second fixed panel d so as to be movably fitted in the longitudinal direction. Long holes j1 through which the rail portions f1, f2 are inserted into the side plates h1, h2 of the intermediate panel c and the second fixed panel d on the insertion side at positions corresponding to the guide grooves g1, g2. j2 is open.

JP 2008-144373 A

  By the way, in the conventional telescopic handrail a for joints, the connecting means e for connecting the first fixed panel b, the intermediate panel c, and the second fixed panel d movably in the longitudinal direction is provided on the inner side of the insertion insertion side. Rail portions f1 and f2 extending in the longitudinal direction respectively provided on the side surfaces, and guide groove portions provided on the inner side surface on the fitting side and fitted to the rail portions f1 and f2 so as to be movable in the longitudinal direction. Since the movement mode is sliding movement in the sliding contact state, there is a problem that the frictional resistance during movement is large and the smoothness of the expansion / contraction operation is lacking. Further, long holes j1 and j2 for inserting the rail portions f1 and f2 are opened in the side plates h1 and h2 of the intermediate panel c and the second fixed panel d, respectively. Since j1 is always exposed on the outer surface, and the extension handrail a for joints is extended during an earthquake, the long hole j2 of the second fixed panel d is also exposed to the outer surface, which is inferior in external appearance.

  The present invention has been made to solve the problems of the conventional configuration, and it is an object of the present invention to provide a joint telescopic handrail having a smooth expansion and contraction operation and an excellent external appearance. is there.

  The present invention is a rectangular housing-shaped first fixed panel that is disposed at a joint position on a side portion of a passage that connects two building frames across a joint located between adjacent building frames. A rectangular housing-like intermediate panel that is inserted into the first fixed panel so as to be movable forward and backward, and pulled out from the front end side of the first fixed panel, and is inserted into the intermediate panel so as to be movable forward and backward A rectangular housing-like second fixed panel drawn out from the front end side of the intermediate panel, and the second fixed panel, the intermediate panel, and the first fixed panel are connected to be extendable in a direction perpendicular to the joint. In addition, in the telescopic handrail for joints in which the end portions of the first fixed panel and the second fixed panel located on the building frame side are connected to the building frame so as to be horizontally rotatable, an intermediate panel is provided in the first fixed panel. A first guide rail is provided along the forward and backward direction of A first rotating roller that contacts the first guide rail and supports the rear portion of the intermediate panel is disposed at a rear end portion of the intermediate panel, and a second along the advancing and retreating direction of the second fixed panel in the intermediate panel. A guide rail is disposed, and a second rotating roller that contacts the second guide rail and supports the front portion of the intermediate panel is disposed at a rear end portion of the second fixed panel. Telescopic handrail for use.

  Here, in the joint handrail, the upper ends of the rectangular housing-like first fixed panel, the intermediate panel, and the second fixed panel that are connected so as to be stretchable in a direction orthogonal to the joint function as handrails.

  In the joint handrail, the first guide rail is disposed in a pair of left and right at positions corresponding to the left and right sides of the intermediate panel that moves forward and backward at least at the inner lower edge of the first fixed panel. A pair of left and right first rotating rollers in contact with the rails are arranged in a state protruding from both the left and right sides of the intermediate panel, and the second guide rail moves forward and backward at least at the inner upper edge of the intermediate panel A pair of left and right second rotation rollers disposed at positions corresponding to both the left and right sides of the second fixed rail are disposed so as to protrude from the left and right sides of the second fixed panel. Can be proposed.

  A pair of left and right first guide rollers that are in contact with the left and right side surfaces of the intermediate panel are disposed near the front ends of the pair of left and right first guide rails, and a second fixed panel is disposed near the front ends of the pair of left and right second guide rails. A configuration may be proposed in which a pair of left and right second guide rollers that are in contact with the left and right side surfaces are disposed.

  In addition, a tension spring is usually placed between the rear end of the intermediate panel and the front end of the second fixed panel to urge the intermediate panel toward the second fixed panel and externally fit the intermediate panel to the second fixed panel. The proposed configuration can be proposed.

  As described above, according to the present invention, the first guide rail is provided in the first fixed panel along the advancing / retreating direction of the intermediate panel, and the intermediate panel is brought into contact with the first guide rail at the rear end portion of the intermediate panel. A first rotating roller that supports the rear portion of the second fixed panel is disposed in the intermediate panel, and a second guide rail is disposed in the intermediate panel along the advancing and retracting direction of the second fixed panel. Since the second rotating roller that contacts the two guide rails and supports the front portion of the intermediate panel is disposed, when the intermediate panel moves in the forward and backward direction in the first fixed panel, The second guide of the intermediate panel is moved when the first rotating roller of the intermediate panel that is in contact with the first guide rail of the first fixed panel rolls and the second fixed panel moves in the forward and backward direction in the intermediate panel. The second fixed panel abutting against the rail Since the rotating roller rolls, the frictional resistance during movement of the intermediate panel and the second fastening panel is greatly reduced, very smooth telescopic operation is obtained. Further, since there are no long holes j1 and j2 (see FIG. 16) of the conventional configuration exposed on the side plates of the intermediate panel and the second fixed panel, the external appearance is excellent.

  In the joint handrail, the first guide rail is disposed in a pair of left and right at positions corresponding to the left and right sides of the intermediate panel that moves forward and backward at least at the inner lower edge of the first fixed panel. A pair of left and right first rotating rollers in contact with the rails are arranged in a state protruding from both the left and right sides of the intermediate panel, and the second guide rail moves forward and backward at least at the inner upper edge of the intermediate panel The pair of left and right second rotating rollers that are in contact with the second guide rails are disposed in positions corresponding to the left and right sides of the second fixed panel so as to protrude from the left and right sides of the second fixed panel. In this case, the first rotating roller of the intermediate panel and the second rotating roller of the second fixed panel are arranged in a pair on the left and right sides of the panel, so that the weight of the supported intermediate panel is set to the left and right. of Are distributed over La, it is possible to improve the stability during movement of the intermediate panel and the second fixed panel. In addition, the first guide rail is disposed at least at the inner lower edge of the first fixed panel, and the second guide rail is disposed at least at the inner upper edge of the intermediate panel, thereby extending the joint handrail. In this state, the rear part of the intermediate panel is supported via the first rotating roller of the intermediate panel that contacts the first guide rail on the inner lower edge of the first fixed panel, and the second guide rail on the inner upper edge of the intermediate panel is contacted. Since the front part of the intermediate panel is supported via the second rotating roller of the second fixed panel that comes into contact, the intermediate panel that is not connected to any building frame is stabilized between the first fixed panel and the second fixed panel. Can be retained.

  A pair of left and right first guide rollers that are in contact with the left and right side surfaces of the intermediate panel are disposed near the front ends of the pair of left and right first guide rails, and a second fixed panel is disposed near the front ends of the pair of left and right second guide rails. In the configuration in which the second guide rollers that are in contact with the left and right side surfaces are arranged in a pair on the left and right sides, the left and right side surfaces of the intermediate panel move to the left and right sides when the intermediate panel moves in the forward and backward direction in the first fixed panel. The pair of first guide rollers abut and rotate, and when the second fixed panel moving in the forward / backward direction in the intermediate panel moves, the pair of left and right second guide rollers touch the left and right side surfaces of the second fixed panel. Since they rotate in contact with each other, backlash in the left-right direction during the movement of the intermediate panel and the second fixed panel is prevented, and smooth movement becomes possible. In addition, the first guide roller is disposed near the front end of the first guide rail, and the second guide roller is disposed near the front end of the second guide rail. When the intermediate panel is pulled out from, the first rotating roller of the intermediate panel rolling on the first guide rail comes into contact with the first guide roller, and when the second fixed panel is pulled out from the front end side of the intermediate panel, the second Since the second rotating roller of the second fixed panel that rolls on the guide rail comes into contact with the second guide roller, the first guide roller can also function as a stopper to prevent the intermediate panel from being pulled out. The two guide rollers can also function as stoppers for preventing the second fixed panel from being pulled out when the second fixed panel is pulled out.

  In addition, a tension spring is usually placed between the rear end of the intermediate panel and the front end of the second fixed panel to urge the intermediate panel toward the second fixed panel and externally fit the intermediate panel to the second fixed panel. In the configuration, the state in which the intermediate panel is externally fitted to the second fixed panel can always be maintained through the biasing force of the tension spring. Thereby, the free movement of the intermediate panel is restricted, and it is possible to prevent the finger from being caught in the gap between the panels due to the free movement of the intermediate panel.

It is a front view of the construction state of the expansion handrail 1 for joints concerning this invention. It is a top view of the construction state same as the above. It is a partially cutaway enlarged front view of the joint handrail 1 for joints concerning this invention. It is a front view of 10 A of 1st fixed panels. (A) is a side view on the rear end side of the first fixed panel 10A, and (B) is a side view on the front end side. (A) is a top view of 10 A of 1st fixed panels, (B) is an enlarged view of the principal part. It is a front view of intermediate panel 10B. (A) is a side view on the rear end side of the intermediate panel 10B, and (B) is a side view on the front end side. (A) is a plan view of the intermediate panel 10B, (B) is an enlarged view of the main part. It is a front view of 10 C of 2nd fixed panels. (A) is a side view on the rear end side of the second fixed panel 10C, and (B) is a side view on the front end side. (A) is a top view of 10 C of 2nd fixed panels, (B) is an enlarged view of the principal part. It is a partially cutaway front view of the joint telescopic handrail 1 showing the connection relationship of the first fixed panel 10A, the intermediate panel 10B, and the second fixed panel 10C. (A) is a partially cutaway plan view showing a normal state of the joint extendable handrail 1, and (B) is a partially cutaway plan view showing a contracted state of the joint extendable handrail 1. (A) is a partially cutaway plan view showing an extended state of the joint telescopic handrail 1, and (B) is a partially cutout showing the following state of the joint telescopic handrail 1 when the adjacent building frame is relatively displaced in the front-rear direction. It is a top view. It is the partial expanded side sectional view of the expansion-contraction handrail a for joints which shows the structure of the conventional connection means e.

  An embodiment of the present invention will be described below with reference to FIGS.

  The telescopic handrail 1 for joints according to the present invention is disposed at the joint position on the side of the passage connecting the two building frames across the joints located between the adjacent building frames. Here, although not shown, one or both of the adjacent building structures are supported by a seismic isolation device having a buffering function and have a seismic isolation structure. As shown in FIG. 1, the support receiving edge 2 protrudes horizontally from one building housing x, and is passed from the other building housing (not shown) onto the support receiving edge 2. The front end portion of the transfer hallway y is supported via the support member 3. Here, as the support member 3, a laminated rubber or a member provided with a smooth surface made of a bearing ball or the like on the upper surface can be applied. Then, by fixing the lower part of the support member 3 to the support receiving edge 2 and mounting the front end portion of the transfer hallway y on the support member 3, the transfer hallway y can be relatively swung horizontally. It is said. Further, a gap having a predetermined width as a joint s is provided between the front end of the passageway y and the building frame x.

  As shown in FIG. 2, the building housing x is formed with a corridor 4 that is continuous to the passage corridor y. The corridor 4 and the passage corridor y cross the joint s located between adjacent building housings. A passage 5 connecting the building frames is formed. On the floor surface 6 of the passage 5, there is a floor joint cover device 7 having a known structure that can be positioned at the joint s and can follow at least a relative displacement in a direction orthogonal to the joint s and a direction along the joint s. The joint s on the floor surface 6 is shielded by the floor joint cover device 7.

  Side walls 8 and 8 are erected along the longitudinal direction of the side of the passage 5, and the side walls 8 and 8 are inserted into gap portions having a predetermined width formed at positions corresponding to the joints s. Joint telescopic handrails 1 and 1 according to the invention are respectively disposed.

  As shown in FIG. 13, the telescopic handrail 1 for joints is inserted into the first fixed panel 10A having a rectangular housing shape and removably inserted into the first fixed panel 10A. A rectangular case-like intermediate panel 10B pulled out from the front end side, and a rectangular case-like second fixed panel that is inserted into the intermediate panel 10B so as to be able to advance and retreat and is drawn out from the front end side of the intermediate panel 10B. 10C.

  As shown in FIG. 4, the first fixed panel 10 </ b> A includes horizontal frame rods 11 a and 11 b disposed at the upper and lower positions, and vertical frame rods 12 a disposed at both longitudinal ends of the horizontal frame rods 11 a and 11 b. , 12b are assembled in a rectangular shape on the left and right sides, and the frames 13, 13 are connected by a plurality of horizontal rods 14 in the width direction as shown in FIGS. Is formed into a flat three-dimensional shape. A plurality of reinforcing bars 15 are horizontally mounted on the vertical frame bars 12a and 12b. The left and right side surfaces of the first fixed panel 10A are shielded by left and right side plates 17 and 17, the top surface is shielded by the top plate 18, the bottom surface is shielded by the bottom plate 19, and the rear surface is shielded by the rear side plate 20, respectively. The front end face of the first fixed panel 10A is opened as an insertion port 21 (see FIG. 5B) communicating with the inside, and the intermediate panel 10B (see FIG. 13) is inserted through the insertion port 21.

  The four horizontal frame rods 11a, 11a, 11b, 11b disposed on the left and right sides at the inner lower edge and the inner upper edge of the first fixed panel 10A are formed of square pipes, and the horizontal frame rods 11a, 11a at the inner lower edge. And the lower surface of the horizontal frame rods 11b, 11b at the inner upper edge form a pair of left and right first guide rails 22a, 22b, respectively. A pair of left and right first guide rollers 23a and 23b that are horizontally rotatable are disposed near the front ends of the first guide rails 22a and 22b, respectively. 21 is in contact with the left and right side surfaces of the intermediate panel 10B (see FIG. 13) inserted from 21 and rotates when the intermediate panel 10B moves forward and backward to prevent the intermediate panel 10B from rattling in the left-right direction. It has become. Further, near the front ends of the first guide rails 22a and 22b, a pair of stopper rods 24a and 24b made of square pipes are fixed on the left side of the first guide rollers 23a and 23b, respectively. The stopper rods 24a and 24b are not necessarily required. By removing the stopper rods 24a and 24b and disposing the first guide rollers 23a and 23b at the positions, the intermediate panel 10B is provided by the first guide rollers 23a and 23b. It is also possible to obtain a function as a stopper for preventing the slipping of the paper when it is pulled out.

  Further, the inner side surfaces of the four horizontal frame rods 11a, 11a, 11b, 11b made of square pipes are a pair of left and right first side guide rails 25a, 25b, respectively. First side rollers 45a and 45b of the intermediate panel 10B described later are brought into contact with 25b.

  The rear end portion of the first fixed panel 10A is connected to the side wall 8 constituting the other building frame via a mounting bracket 26a so as to be horizontally rotatable. The mounting bracket 26a faces a mounting rod 27 fixed to the end surface of the side wall 8 by a plurality of anchor bolts 28 and nuts 29, and horizontal support plates 30 and 30 extending from both upper and lower ends of the mounting rod 27. And a pair of upper and lower support shafts 31, 31 protruding in a shape, and the support shafts 31, 31 are inserted into through holes 32, 32 formed at the upper and lower positions of the rear end portion of the first fixed panel 10 </ b> A. By doing so, the rear end portion of the first fixed panel 10A is connected to the adjacent side wall 8 so as to be horizontally rotatable.

  As shown in FIG. 7, the intermediate panel 10B includes horizontal frame rods 33a and 33b arranged at the upper and lower positions, and vertical frame rods 34a and 34b arranged at both longitudinal ends of the horizontal frame rods 33a and 33b. Are attached to the left and right sides, and the frames 35 and 35 are connected to each other by a plurality of horizontal rods 36 in the width direction as shown in FIGS. It is formed in a simple three-dimensional shape. A plurality of reinforcing bars 37 are horizontally mounted on the vertical frame bars 34a and 34b. The intermediate panel 10B is shielded by left and right side plates 38, 38 on the left and right side surfaces, the top surface is shielded by the top plate 39, the bottom surface is shielded by the bottom plate 40, and the rear surface is shielded by the rear side plate 41. The front end surface of the intermediate panel 10B is opened as an insertion port 42 (see FIG. 8B) communicating with the inside, and the second fixed panel 10C (see FIG. 13) is inserted through the insertion port 42.

  At the rear end portion of the intermediate panel 10B, support brackets 43a and 43b are provided to project rearward at the upper and lower positions. The support brackets 43a and 43b are provided with the first guide rails 22a and 22a of the first fixed panel 10A described above. First rotating rollers 44a and 44b are disposed so as to abut against 22b and support the rear portion of the intermediate panel 10B. The first rotating rollers 44a and 44b are provided in a pair on the left and right, respectively, and are disposed in a state of projecting to the left and right sides of the intermediate panel 10B as shown in FIGS. As a result, the first rotating rollers 44a and 44b are brought into contact with the first guide rails 22a and 22b (see FIG. 4) disposed at positions corresponding to the left and right sides of the intermediate panel 10B that moves forward and backward in the first fixed panel 10A. You can come in contact. The support brackets 43a and 43b are provided with a pair of left and right horizontally rotatable first side rollers 45a and 45b that contact the inner side surfaces of the first side guide rails 25a and 25b of the first fixed panel 10A. The first side rollers 45a and 45b prevent backlash in the left-right direction on the rear side of the intermediate panel 10B when the intermediate panel 10B moves forward and backward.

  The four horizontal frame rods 33a, 33a, 33b, 33b disposed on the left and right sides at the inner lower edge and inner upper edge of the intermediate panel 10B are formed of square pipes, and the upper surfaces of the horizontal frame rods 33a, 33a at the inner lower edge And the lower surfaces of the horizontal frame rods 33b and 33b at the inner upper edge form a pair of left and right second guide rails 46a and 46b, respectively. Further, in the vicinity of the front ends of the second guide rails 46a and 46b, a pair of right and left second guide rollers 47a and 47b are disposed on the left and right sides, and the second guide rollers 47a and 47b are inserted through the insertion openings. 42 abuts against the left and right side surfaces of the second fixed panel 10C (see FIG. 13) inserted from 42, and rotates when the second fixed panel 10C moves forward and backward, and the second fixed panel 10C is rattled in the left-right direction. Is to prevent.

  Also, the inner side surfaces of the four horizontal frame rods 33a, 33a, 33b, 33b made of square pipes are a pair of left and right second side guide rails 48a, 48b, respectively. 48b is in contact with second side rollers 63a and 63b of the second fixed panel 10C described later.

  As shown in FIG. 10, the second fixed panel 10 </ b> C includes horizontal frame rods 49 a and 49 b disposed at the upper and lower positions, and vertical frame rods 50 a disposed at both longitudinal ends of the horizontal frame rods 49 a and 49 b. , 50b and a frame 51 assembled in a rectangular shape on the left and right sides, and the frames 51, 51 are connected by a plurality of horizontal ribs 52 in the width direction as shown in FIGS. Is formed into a flat three-dimensional shape. A plurality of reinforcing bars 54 are horizontally mounted on the vertical frame bars 50a and 50b. The left and right side surfaces of the second fixed panel 10C are shielded by left and right side plates 55, 55, the top surface is shielded by the top plate 56, the bottom surface is shielded by the bottom plate 57, and the front surface is shielded by the front side plate 58. Here, the front side plate 58 is set so that the left and right width dimensions and the upper and lower length dimensions thereof are substantially the same as the width dimension and the length dimension of the intermediate panel 10B. As a result, as shown in FIG. 3, when the intermediate panel 10B is externally fitted to the second fixed panel 10C, an appearance in which the front side plate 58 and the intermediate panel 10B are continuously arranged can be obtained. The rear end surface of the second fixed panel 10C is opened as an insertion port 59 (see FIG. 11A) communicating with the inside, and a plurality of tension springs 60 described later are inserted into the insertion port 59.

  At the rear end of the second fixed panel 10C, support brackets 61a and 61b are protruded rearward at the upper and lower positions. The support brackets 61a and 61b are provided with the second guide rails 46a and 46b of the intermediate panel 10B described above. Second rotating rollers 62a and 62b are disposed so as to contact 46b and support the front portion of the intermediate panel 10B. The second rotating rollers 62a and 62b are provided in a pair on the left and right sides, respectively, and are arranged in a state of projecting to the left and right sides of the second fixed panel 10C as shown in FIGS. As a result, the second rotating rollers 62a and 62b are brought into contact with the second guide rails 46a and 46b (see FIG. 7) disposed at the positions corresponding to the left and right sides of the second fixed panel 10C moving forward and backward in the intermediate panel 10B. You can come in contact. The support brackets 61a and 61b are respectively provided with a pair of left and right horizontally rotatable second side rollers 63a and 63b that contact the inner side surfaces of the second side guide rails 48a and 48b of the intermediate panel 10B described above. The second side rollers 63a and 63b prevent backlash in the left-right direction on the rear side of the second fixed panel 10C when the second fixed panel 10C moves forward and backward.

  The front end portion of the second fixed panel 10C is connected to the side wall 8 constituting one building frame x via a mounting bracket 26b so as to be horizontally rotatable. As with the mounting bracket 26a of the first fixing panel 10A described above, the mounting bracket 26b includes a mounting rod 27 fixed to the end surface of the side wall 8 by a plurality of anchor bolts 28 and nuts 29, and A pair of upper and lower support shafts 31 and 31 projecting from the horizontal support plates 30 and 30 extending from both upper and lower ends are provided, and the support shafts 31 and 31 are connected to the second fixed panel 10C. The front end portion of the second fixed panel 10 </ b> C is connected to the adjacent side wall 8 so as to be horizontally rotatable by being inserted through the vertical position of the rear end portion.

  Further, as shown in FIG. 7, a plurality of spring hooks 65 are horizontally provided at predetermined intervals in the vertical direction between the pair of left and right vertical frame rods 34b, 34b disposed at the rear end portion of the intermediate panel 10B. As shown in FIG. 10, between the pair of left and right vertical frame rods 50a, 50a disposed at the front end portion of the second fixed panel 10C, the height positions corresponding to the respective spring hanging rods 65 are provided. A spring hook 66 is provided horizontally. As shown in FIG. 13, one end and the other end of the tension spring 60 are engaged with each pair of the spring hooks 65 and the spring hooks 66 provided horizontally at the same height position. 60 is stretched in a state of being inserted into the intermediate panel 10B and the second fixed panel 10C. And, as shown in FIG. 3, the intermediate panel 10B is normally fixed to the second position by the tension springs 60 stretched between the rear end portion of the intermediate panel 10B and the front end portion of the second fixed panel 10C. The intermediate panel 10B is biased toward the panel 10C side and maintains a state in which the intermediate panel 10B is externally fitted to the second fixed panel 10C. Thereby, the free movement of the intermediate panel 10B is restricted, and it is possible to prevent the fingers from being caught in the gaps between the fitting portions of the panels 10A, 10B, 10C due to the free movement of the intermediate panel 10B. Yes.

  In such a configuration, as shown in FIG. 13, the first fixed panel 10A, the intermediate panel 10B, and the second fixed panel 10C are connected so as to be extendable and contracted, and as shown in FIG. 2, the first fixed panel 10A. And the installation state where each edge part located in the building frame side of the 2nd fixed panel 10C was connected with the side walls 8 and 8 which comprise this building frame via mounting bracket 26a, 26b so that horizontal rotation was possible. As shown in FIG. 14 (A), the joint telescopic handrail 1 is normally externally fitted to the second fixed panel 10C via the biasing force of the tension spring 60 (see FIG. 3). Held in a state. In this state, the top plate 18 of the first fixed panel 10A and the top plate 39 of the intermediate panel 10B function as a handrail during normal times.

  On the other hand, when the adjacent building frame is relatively displaced in the proximity direction at the time of the earthquake, as shown in FIG. 14B, the intermediate panel 10B and the second fixed panel 10C are included in the first fixed panel 10A according to the displacement amount. The jointed telescopic handrail 1 is inserted and contracted to follow the relative displacement in the proximity direction. When the adjacent building frame is relatively displaced in the separation direction, as shown in FIG. 15A, the second fixed panel 10C is pulled out from the intermediate panel 10B according to the amount of displacement, and the joint handrail 1 is extended. And follow the relative displacement in the separation direction. When the adjacent building frame is relatively displaced in the front-rear direction (the direction along the joint s), the rear end portion of the first fixed panel 10A and the front end portion of the second fixed panel 10C are moved as shown in FIG. In accordance with the amount of displacement, the mounting brackets 26a and 26b rotate horizontally around the support shafts 31 and 31 to follow the relative displacement in the front-rear direction. The follow-up action by horizontal rotation of the joint telescopic handrail 1 can be obtained not only in the extended state of the joint telescopic handrail 1 shown in FIG. 15A but also in the normal state and the contracted state. it can.

  According to the joint telescopic handrail 1 according to the present invention, when the intermediate panel 10B moving in the forward / backward direction in the first fixed panel 10A moves, the first guide rails 22a and 22b of the first fixed panel 10A come into contact. The first rotating rollers 44a and 44b of the intermediate panel 10B roll and the second guide rails 46a and 46b of the intermediate panel 10B move to the second fixed panel 10C that moves in the intermediate panel 10B in the forward / backward direction. Since the second rotating rollers 62a and 62b of the second fixed panel 10C in contact with each other roll, the frictional resistance during the movement of the intermediate panel 10B and the second fixed panel 10C is greatly reduced, and an extremely smooth expansion and contraction operation is obtained. It is done. Further, since there are no long holes j1 and j2 (see FIG. 16) of the conventional configuration exposed on the side panels of the intermediate panel 10B and the second fixed panel 10C, an excellent external appearance is exhibited.

  In the joint telescopic handrail 1, the first guide rails 22a and 22a are arranged in a pair of left and right at positions corresponding to the left and right sides of the intermediate panel 10B that moves forward and backward, at least on the inner lower edge of the first fixed panel 10A. A pair of left and right first rotating rollers 44a, 44a that contact the first guide rails 22a, 22a are disposed in a state protruding from the left and right sides of the intermediate panel 10B, and the second guide rails 46b, 46b A pair of left and right second rotations disposed at a position corresponding to both the left and right sides of the second fixed panel 10C that moves forward and backward, at least at the inner upper edge of the intermediate panel 10B, and abuts against the second guide rails 46b and 46b. Since the rollers 62b and 62b are arranged in a state of projecting to the left and right sides of the second fixed panel 10C, the weight of the intermediate panel 10B to be supported is increased between the left and right sides. Rollers 44a, 44a and a second rotary roller 62b, is dispersed in 62b, can improve stability during intermediate panel 10B and the second fixing panel 10C move. Further, the first guide rails 22a and 22a are disposed on at least the inner lower edge of the first fixed panel 10A, and the second guide rails 46b and 46b are disposed on at least the inner upper edge of the intermediate panel 10B. Thus, in the extended state of the joint telescopic handrail 1, the intermediate panel 10 </ b> B is connected to the intermediate panel 10 </ b> B via the first rotation rollers 44 a and 44 a of the intermediate panel 10 </ b> B that contacts the first guide rails 22 a and 22 a on the inner lower edge of the first fixed panel 10 </ b> A. The rear part is supported, and the front part of the intermediate panel 10B is supported via the second rotating rollers 62b and 62b of the second fixed panel 10C that abuts the second guide rails 46b and 46b on the inner upper edge of the intermediate panel 10B. The intermediate panel 10B not connected to any building frame can be stably held between the first fixed panel 10A and the second fixed panel 10C. Kill.

  Further, as shown in FIG. 13, first guide rollers 23 a and 23 b that are in contact with the left and right side surfaces of the intermediate panel 10 </ b> B are disposed in the vicinity of the front ends of the pair of left and right first guide rails 22 a and 22 b, respectively. Since the second guide rollers 47a and 47b that contact the left and right side surfaces of the second fixed panel 10C are disposed in the vicinity of the front ends of the pair of left and right second guide rails 46a and 46b, respectively, the first fixed panel When the intermediate panel 10B moving in the forward / backward direction in 10A moves, the pair of left and right first guide rollers 23a, 23b abut on the left and right side surfaces of the intermediate panel 10B and rotate, and the intermediate panel 10B moves in the forward / backward direction. When the second fixed panel 10C moving to the right and left is moved, the pair of left and right second guide rollers 47a and 47b abut on the left and right side surfaces of the second fixed panel 10C and rotate. With the horizontal direction of the backlash is prevented in the intermediate panel 10B and upon forward and backward movement of the second fastening panel 10C, it can be smoothly moved. The first guide rollers 23a and 23b are disposed near the front ends of the first guide rails 22a and 22b, and the second guide rollers 47a and 47b are disposed near the front ends of the second guide rails 46a and 46b. Therefore, when the intermediate panel 10B is pulled out from the front end side of the first fixed panel 10A, the first rotation rollers 44a and 44b of the intermediate panel 10B rolling on the first guide rails 22a and 22b are used as the first guide roller 23a. , 23b and when the second fixed panel 10C is pulled out from the front end side of the intermediate panel 10B, the second rotating rollers 62a, 62b of the second fixed panel 10C rolling on the second guide rails 46a, 46b are Since the first guide rollers 23a and 23b are in contact with the two guide rollers 47a and 47b, the first guide rollers 23a and 23b are stoppers for preventing the removal when the intermediate panel 10B is pulled out. Also can function as over, the second guide roller 47a, 47b can also to function as a stopper for retaining at withdrawal of the second fixed panel 10C.

  Further, as shown in FIG. 3, between the rear end of the intermediate panel 10B and the front end of the second fixed panel 10C, the intermediate panel 10B is normally urged toward the second fixed panel 10C by pushing the intermediate panel 10B. Since the tension spring 60 that is externally fitted to the two fixed panels 10C is stretched, the state in which the intermediate panel 10B is externally fitted to the second fixed panel 10C via the biasing force of the tension spring 60 can be maintained at all times. it can. Thereby, the free movement of the intermediate panel 10B is restricted, and it is possible to prevent the fingers from being caught in the gaps between the panels 10A, 10B, and 10C due to the free movement of the intermediate panel 10B.

  In the embodiment, the end of the second fixed panel 10C is connected to the side wall 8 on the one side of the building frame x via the mounting bracket 26b, but there is no side wall 8 on the side of the building frame x. In a building housing having a structure, the end portion of the second fixed panel 10C is connected to the wall surface of the building housing or a column erected in the vicinity of the wall surface via the mounting bracket 26b so as to be horizontally rotatable. It is also possible to do.

1 telescopic handrail for joint 5 passage 10A first fixed panel 10B intermediate panel 10C second fixed panels 22a, 22b first guide rails 23a, 23b first guide rollers 44a, 44b first rotating rollers 46a, 46b second guide rail 47a, 47b Second guide roller 60 Tension springs 62a, 62b Second rotation roller s Joint x Building frame y Crossover corridor (building frame)

Claims (2)

The first fixed panel in the shape of a rectangular housing, the first fixed panel is disposed at the joint position on the side of the passage connecting the two building frames across the joint located between the adjacent building frames. A rectangular housing-like intermediate panel that is inserted into the one fixed panel so as to be able to advance and retract, and pulled out from the front end side of the first fixed panel, and is inserted into the intermediate panel so as to be able to advance and retract. A rectangular housing-like second fixed panel drawn from the front end side of the first fixed panel, the second fixed panel, the intermediate panel, and the first fixed panel being connected to be extendable in a direction perpendicular to the joint, In the extension handrails for joints, the end portions of the fixed panel and the second fixed panel located on the building frame side are connected to the building frame so as to be horizontally rotatable,
A first guide rail is provided in the first fixed panel along the advancing / retreating direction of the intermediate panel, and a first rotating roller that supports the rear portion of the intermediate panel by contacting the first guide rail at a rear end portion of the intermediate panel And a second guide rail extending in the advancing and retreating direction of the second fixed panel is disposed in the intermediate panel, and the intermediate panel is brought into contact with the second guide rail at the rear end portion of the second fixed panel. A second rotating roller is disposed to support the front of the
Near the front ends of the pair of left and right first guide rails, a pair of left and right first guide rollers that are in contact with the left and right side surfaces of the intermediate panel are disposed, and near the front ends of the pair of left and right second guide rails, A telescopic handrail for joints, wherein a pair of left and right second guide rollers in contact with the side surfaces are arranged .   A pair of left and right first guide rails are disposed at positions corresponding to both the left and right sides of the intermediate panel that moves forward and backward, at least on the inner lower edge of the first fixed panel, and a pair of left and right first abuts against each first guide rail The rotating roller is disposed in a state protruding from the left and right sides of the intermediate panel, and the second guide rail is positioned at the position corresponding to the left and right sides of the second fixed panel that moves forward and backward at least at the inner upper edge of the intermediate panel. 2. The joint according to claim 1, wherein a pair of left and right second rotating rollers disposed in a pair and abutting on each second guide rail are disposed in a state of projecting on both left and right sides of the second fixed panel. Telescopic handrail.

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