JP7491539B2 - Expansion joint cover device - Google Patents

Description

This invention relates to an expansion joint cover device that is installed in the gap between two structures and has a handrail.

For example, Patent Document 1 discloses an expansion joint cover device with handrails that is movably connected in response to the movement between the structures, and includes a scaffold, multiple handrails, a pivoting connector that connects the structure and the handrails, and a pivotable connector, the scaffold is positioned between the structures so that it can move horizontally freely, one handrail and the other handrail are fitted together so that they can slide almost horizontally, and the pivoting connector and the pivotable connector can rotate freely around a vertical axis centered on an axle.

JP 2015-151736 A

For this type of expansion joint cover device to function smoothly, the handrail needs to be attached to the structure so that the horizontal frame is horizontal and the vertical frame is vertical. This means that the handrail needs to be attached to the structure while it is both horizontal and vertical. However, attaching the handrail while keeping it both horizontal and vertical is laborious, and improvements were needed.

The present invention aims to provide an expansion joint cover device that can improve the accuracy and workability when attaching a handrail horizontally and vertically to a structure.

The present invention has been made to solve the above-mentioned problems, and provides an expansion joint cover device comprising one handrail attached to one body side and the other handrail attached to the other body side, the one handrail and the other handrail being connected and disposed in the gap between the one body and the other body, the one handrail and the other handrail being formed by a four-sided framework of two vertical frames, an upper horizontal frame, and a lower horizontal frame, the one handrail being rotatably connected to the other handrail and slidably connected to the one body, the pivotal connecting means connecting the one handrail and the other handrail comprising a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail, the first connecting member comprising a retaining portion that supports the vertical frame of the one handrail, and the retaining portion being fixed to the vertical frame of the one handrail from the side of the one handrail by a fastener.
As fasteners for fixing the retaining portion and the vertical frame, conventional fasteners such as through bolts, screws with pilot holes, screws without pilot holes, rivets, etc. can be used.

The present invention is as described above, and the pivotal connecting means that connects one handrail to the other handrail comprises a first connecting member that is fixed to the one handrail and a second connecting member that is fixed to the other handrail, and the first connecting member comprises a holding part that supports the vertical frame of the one handrail, and the holding part is fixed to the vertical frame of the one handrail from the side of the one handrail with a fastener. With this configuration, the pivotal connecting means can be attached to the one handrail simply by inserting the vertical frame of the one handrail into the holding part and fixing it from the side with a fastener such as a screw.

In other words, the handrail can be fixed with fasteners such as screws from the side of the handrail, which has a larger working space, rather than from the front of the handrail (the side facing the other handrail), making the work easier. Also, the handrail is fixed to the pivoting connection means that is already horizontal and vertical to the main body, making the connection work easy.

In addition, a receiving groove that engages with the tip of the retaining part may be formed on the side of the vertical frame of one of the handrails to which the first connecting member is attached. With this configuration, the receiving groove can improve strength against horizontal loads.

The vertical frame may also have a side that is thicker than other parts in order to be fixed to the first connecting member with a fastener. With this configuration, fasteners such as screws are attached to the thick side of the vertical frame, improving the fixing strength and improving the strength against horizontal and vertical loads, thereby preventing the first connecting member from falling off.

The first and second connecting members may have a rotation axis formed on one side and a holding groove formed on the other side for rotatably holding the rotation axis, the rotation axis having a rotation prevention protrusion formed on the outer periphery and supported by the axis support portion, the holding groove having a concave groove formed on the inner periphery for accommodating the rotation prevention protrusion and a convex portion formed on the opening edge facing the axis support portion, and when the rotation axis rotates in the holding groove, the rotation prevention protrusion abuts against the concave groove and the axis support portion abuts against the convex portion, thereby suppressing the rotation of the rotation axis. With this configuration, the rotation range of the rotation axis can be restricted, and the load on the convex portion can be distributed to prevent damage to the convex portion.

The pivot shaft may also be configured to be shorter than the longitudinal length of the retaining groove. With this configuration, the pivot shaft can move up and down inside the retaining groove, allowing it to follow the displacement of the body in the height direction.

The holding groove may also be provided with a fall prevention means for preventing the pivot shaft from falling out of the lower opening of the holding groove. This configuration makes it possible to prevent the pivot shaft from falling out.

The second connecting member may also be provided with a fastener for fastening the second connecting member to the other handrail, and a decorative cover material may be attached to the second connecting member to cover the fastener. With this configuration, the fastener is not exposed, improving the design.

An end cover may also be attached to the top surface of the decorative cover material. This configuration improves the design and prevents the decorative cover material from falling off.

The present invention also includes a sliding connecting member that connects one handrail and one of the frames, and the sliding connecting member is fixed to one of the frames and slidably engages with a sliding groove formed on the side of one of the handrails. With this configuration, the sliding connecting member can be made to the minimum necessary length that is shorter than the longitudinal length of one of the handrails, thereby reducing weight and manufacturing costs and improving design. In other words, when a slidingly engageable protrusion is provided on the handrail as in the conventional configuration (see, for example, JP 2015-151736 A), the protrusion must be formed over the entire length of the handrail, but if the sliding connecting member is provided as a separate member from the handrail as in the present invention, the length of the protrusion can be adjusted, so there is no need to provide an unnecessary protrusion.

The upper horizontal frames of the one handrail and the other handrail are members of the same cross-sectional shape with a sliding groove formed therein, and a sliding protrusion that slidably engages with the sliding groove may be formed on one side of the sliding connecting member, and an engaging protrusion that engages with the sliding groove when the sliding connecting member is fixed to the upper horizontal frame may be formed on the other side of the sliding connecting member. With this configuration, the upper horizontal frames of the one handrail and the other handrail can be formed from the same member, thereby reducing manufacturing costs. Furthermore, by having the engaging protrusion of the sliding connecting member engage with the sliding groove, strength against horizontal and vertical loads is improved and positioning is also easier.

The upper horizontal frame may also have side walls that are thicker than other parts in order to secure the sliding connecting member with a fastener. With this configuration, fasteners such as screws can be attached to the thick parts of the upper horizontal frame to improve the fixing strength, and strength against horizontal and vertical loads can be improved, preventing the sliding connecting member from falling off during displacement.

FIG. 2 is a plan cross-sectional view of the expansion joint cover device. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 2 is an enlarged view of part B shown in FIG. 1A is a diagram showing how to attach the end cover, and FIG. 1B is a diagram showing how to attach the vertical frame to the first connecting member. 13A and 13B are diagrams showing how to attach the pivotal connecting means, in which FIG. 13A shows the attachment of the first connecting member and the second connecting member, and FIG. 13B shows the attachment of the decorative cover material. 13A and 13B are diagrams showing how to attach the vertical frame to the pivotal connecting means, in which (a) shows attachment to the first connecting member, and (b) shows attachment of the screws. FIG. 4A is a cross-sectional view of the vertical frame and the first connecting member, and FIG. 4B is an enlarged cross-sectional view of a portion near the receiving groove. 1A is a diagram showing the state when the rotation shaft has been rotated to the maximum angle, and FIG. 1B is a diagram showing the state when the rotation shaft has been rotated to the maximum angle in the opposite direction. FIG. 3A is an enlarged view of a portion C shown in FIG. 2, and FIG. 3B is an enlarged view of a portion D shown in FIG. FIG. 1A is a front view of the upper horizontal frame and the sliding connecting member, and FIG. FIG. 1A is a diagram showing an expansion joint cover device that follows the displacement of a main body, and FIG. 1B is a diagram showing an expansion joint cover device that follows the displacement of a main body in another direction. FIG. 11 is a cross-sectional plan view of an expansion joint cover device according to a modified example. 14 is a cross-sectional view of a modified example taken along line EE of FIG. 13. FIG. 14 is an enlarged view of a portion F shown in FIG. 13 according to a modified example. 15A and 15B are views relating to a modified example, and are an enlarged view of a portion G shown in FIG. 14, and an enlarged view of a portion H shown in FIG. 13A is a diagram showing an expansion joint cover device that follows the displacement of the main body, and FIG. 13B is a diagram showing an expansion joint cover device that follows the displacement of the main body in another direction, according to a modified example. 13A and 13B are diagrams relating to modified examples of the vertical frame and the first connecting member, in which (a) is a cross-sectional view in which the fitting portion is on the front surface of the vertical frame, and (b) is a cross-sectional view in which the fitting portion is on the rear surface of the vertical frame.

First Embodiment
A first embodiment of the present invention will be described with reference to the drawings.
The expansion joint cover device 10 according to this embodiment is provided in the gap 50 between two bodies, as shown in Figs. 1 and 2, and includes one handrail 11 attached to one body 51 and the other handrail 12 attached to the other body 52. The one handrail 11 and the other handrail 12 are connected and disposed in the gap 50 between the one body 51 and the other body 52. The one handrail 11 is connected to the rotating connection object so as to be rotatable, and is connected to the sliding connection object so as to be slidable. In this embodiment, the one body 51 is a rotating connection object that is rotatably connected to the one handrail 11, and the other handrail 12 is a sliding connection object that is slidably connected to the one handrail 11.

The expansion joint cover device 10 according to this embodiment includes a pivoting connection means 20 that connects the first handrail 11 and the second handrail 12 to the main body, and a sliding connection member 30 that slidably connects the first handrail 11 and the second handrail 12.

As shown in FIG. 2, the first handrail 11 and the second handrail 12 are arranged parallel to each other. As shown in FIG. 1, the first handrail 11 and the second handrail 12 are arranged so that parts of their sides overlap each other. A sliding connecting member 30 is provided in the overlapping part of the sides, so that the first handrail 11 and the second handrail 12 are connected to each other so that they can slide freely in the horizontal direction.

As shown in Figures 1 and 2, one handrail 11 and the other handrail 12 are formed by two rectangular prism-shaped vertical frames 16, an upper horizontal frame 13, and a lower horizontal frame 15 to form a four-sided framework. In addition, multiple intermediate vertical frames 17 are arranged within this framework. The intermediate vertical frames 17 are hung vertically between the upper horizontal frame 13 and the lower horizontal frame 15, and multiple intermediate vertical frames 17 are arranged at predetermined intervals in the longitudinal direction of the upper horizontal frame 13 and the lower horizontal frame 15. The number of intermediate vertical frames 17 can be increased or decreased depending on the longitudinal length of the framework on all four sides, and only one intermediate vertical frame 17 may be arranged, or no intermediate vertical frame 17 may be provided at all.

As shown in Figures 10(a) and 11, the upper horizontal frame 13 constitutes the handrail's coping and is fixed across the upper ends of the two vertical frames 16. The upper horizontal frame 13 is a hollow, long aluminum extrusion and includes a top plate portion 13a, one side wall portion 13c and the other side wall portion 13g that hang down from the left and right ends of the top plate portion 13a, and a bottom plate portion 13b that is horizontally disposed between the one side wall portion 13c and the other side wall portion 13g.

The top plate portion 13a is formed to have a semicircular cross section. However, the shape of the top plate portion 13a is not limited to this. Although not specifically shown, for example, the top plate portion 13a may be formed to be flat, or may have a shape with inclined corners.

A sliding groove 13d that opens toward the side of the handrail is formed over the entire length in the longitudinal direction on one side wall portion 13c. This sliding groove 13d is for slidably engaging with a sliding connecting member 30 described below, or for fixing the sliding connecting member 30. In other words, the upper horizontal frame 13 according to this embodiment uses members with the same cross-sectional shape for one handrail 11 and the other handrail 12, and by fixing the sliding connecting member 30 to one handrail 11 and slidably engaging the sliding connecting member 30 to the other handrail 12, one handrail 11 and the other handrail 12 can be slidably connected.

Moreover, the portion of the one side wall portion 13c above the sliding groove 13d forms a thick portion 13e that is thicker than the other portion (for example, the other side wall portion 13g). A fastener 32 such as a screw for fixing the sliding connecting member 30 described later is screwed into this thick portion 13e. By forming this thick portion 13e to be thick, it is possible to ensure a sufficient screw-in depth when screwing the fastener 32. This improves the mounting strength of the fastener 32 against horizontal and vertical loads, and prevents the sliding connecting member 30 from falling off during displacement.
An engagement groove 13f for engaging the sliding connecting member 30 is formed over the entire length in the lower surface of the one side wall portion 13c.

As shown in FIG. 10(b), the lower horizontal frame 15 constitutes the lower end of the handrail and is fixed across the lower ends of the two vertical frames 16. The lower horizontal frame 15 is a long aluminum extrusion with a roughly U-shaped cross section that opens downward, and includes a top plate portion 15a, and one side wall portion 15c and the other side wall portion 15g that hang down from the left and right ends of the top plate portion 15a. The lower horizontal frame 15 is held in a suspended state so that it does not come into contact with the ground.

A sliding groove 15d that opens toward the side of the handrail is formed over the entire length in the longitudinal direction on one side wall portion 15c. This sliding groove 15d is for slidably engaging with a sliding connecting member 30 described below, or for fixing the sliding connecting member 30. In other words, the lower horizontal frame 15 according to this embodiment uses members with the same cross-sectional shape for one handrail 11 and the other handrail 12, and by fixing the sliding connecting member 30 to one handrail 11 and slidably engaging the sliding connecting member 30 to the other handrail 12, one handrail 11 and the other handrail 12 can be slidably connected.

In addition, the portion of the side wall 15c above the sliding groove 15d forms a thick portion 15e that is thicker than the other portion (for example, the other side wall 15g). A fastener 32 such as a screw for fixing the sliding connecting member 30 described later is screwed into this thick portion 15e. By forming this thick portion 15e thick, it is possible to ensure a sufficient screw-in depth when screwing the fastener 32. This improves the mounting strength of the fastener 32 against horizontal and vertical loads, so that the sliding connecting member 30 can be prevented from falling off during displacement. In addition, since the upper horizontal frame 13 and the lower horizontal frame 15 use the same sliding connecting member 30, the number of parts can be reduced, and the same sliding connecting member 30 and the sliding grooves 13d and 15d of the same cross section allow for smooth displacement by sliding in the same way up and down.

As shown in FIG. 1, the vertical frame 16 of the two vertical frames 16 that is closer to the main body is connected to the main body by a pivot connection means 20. Specifically, the vertical frame 16 of one handrail 11 is pivotally held relative to one body 51, so that one handrail 11 is pivotally connected to one body 51. In addition, the vertical frame 16 of the other handrail 12 is pivotally held relative to the other body 52, so that the other handrail 12 is pivotally connected to the other body 52.

The vertical frame 16 to which the pivotal connection means 20 is attached is a rectangular aluminum extrusion as shown in Figure 7, and a first connection member 21 (part of the pivotal connection means 20) described below is attached so as to cover the front surface 16a (the surface facing the main body) and both side surfaces 16b.

Both side surfaces 16b of the vertical frame 16 are provided with an engagement surface 16d continuing rearward from the left and right ends of the front surface 16a, an abutment surface 16e rising vertically from the engagement surface 16d, and an exposed surface 16f provided parallel to the engagement surface 16d rearward from the engagement surface 16d. The front end of the exposed surface 16f forms a protrusion 16g protruding forward from the abutment surface 16e, and a roughly U-shaped receiving groove 16h is formed by this protrusion 16g, the abutment surface 16e, and the engagement surface 16d. In addition, a thick-walled portion 16i formed thicker than other portions (for example, the exposed surface 16f provided parallel to the engagement surface 16d) is formed on the inner surface of the engagement surface 16d in order to be fixed with a fastener 24. A fastener 24 such as a screw for fixing the holding portion 21e of the first connecting member 21 described later is screwed into this thick-walled portion 16i. By making this thick-walled portion 16i thick, it is possible to ensure sufficient screw-in depth when screwing in the fastener 24. This improves the attachment strength of the fastener 24 against horizontal and vertical loads, preventing the first connecting member 21 from falling off.

The pivotal connection means 20 is for connecting the first handrail 11 and the second handrail 12 to the main frame so that they can pivot horizontally. The pivotal connection means 20 is provided for each of the first handrail 11 and the second handrail 12. That is, a pivotal connection means 20 that connects the first handrail 11 to the main frame 51, and a pivotal connection means 20 that connects the second handrail 12 to the main frame 52 are provided. In the following, the pivotal connection means 20 that connects the first handrail 11 to the main frame 51 will be described as an example, but the pivotal connection means 20 that connects the second handrail 12 to the main frame 52 has the same configuration as described below.
As shown in FIGS. 3 and 4, the pivotal connecting means 20 includes a first connecting member 21, a second connecting member 22, a decorative cover material 26, and an end cover 27.

The first connecting member 21 is a member fixed to one of the handrails 11, and is a long aluminum extrusion formed slightly shorter than the vertical frame 16. As shown in Figures 3 and 7, this first connecting member 21 has a hollow rectangular column portion 21a, an axis support portion 21b extending from the corner of the rectangular column portion 21a toward one of the frames 51, a rotating shaft 21c formed at the tip of the axis support portion 21b, and a holding portion 21e protruding from the rectangular column portion 21a in the opposite direction to one of the frames 51.

The rotating shaft 21c is a round bar-shaped part extending vertically, and is supported by the shaft support part 21b. This rotating shaft 21c is a rotating shaft 21c that rotatably connects the first connecting member 21 and the second connecting member 22, and is rotatably held by the holding groove 22e described later. A rotation prevention protrusion 21d is formed on the circular outer periphery of this rotating shaft 21c. This rotation prevention protrusion 21d is provided to prevent the rotating shaft 21c from rotating beyond a predetermined range when it rotates in the holding groove 22e. In this embodiment, two rotation prevention protrusions 21d are formed symmetrically in opposite directions. In addition, the rotating shaft 21c is formed over the entire length of the first connecting member 21, but is configured to be shorter than the longitudinal length of the holding groove 22e.

The holding portion 21e is a portion for holding the vertical frame 16 of the handrail, and is formed by two protruding plates 21f protruding from the rear surface of the rectangular column portion 21a. The two protruding plates 21f protrude parallel to each other from the rear surface of the rectangular column portion 21a, and the two protruding plates 21f and the rear surface of the rectangular column portion 21a form the holding portion 21e with a U-shaped cross section that covers both side surfaces 16b and the front surface 16a of the vertical frame 16 of one handrail 11. This holding portion 21e is formed over the entire length of the first connecting member 21.

When inserting the vertical frame 16 into the retaining portion 21e, as shown in FIG. 7, insert it from the front surface 16a of the vertical frame 16. The distance between the two protruding plates 21f is formed to be approximately equal to the width of the engagement surfaces 16d on both sides of the vertical frame 16, so the vertical frame 16 can be inserted into the retaining portion 21e by aligning the engagement surfaces 16d on both sides of the vertical frame 16 with the inner surfaces of the two protruding plates 21f.

When the vertical frame 16 is inserted all the way into the retaining portion 21e, as shown in FIG. 7(b), the tip 21g of the protruding plate 21f is inserted into and engages with the receiving groove 16h provided on both side surfaces of the vertical frame 16. Note that a step 21h is formed near the tip of the protruding plate 21f at a position that faces the tip of the protruding portion 16g of the vertical frame 16 when inserted into the receiving groove 16h.

By configuring it in this way, even if a horizontal load acts on the vertical frame 16 and the first connecting member 21, the tip 21g of the protruding plate 21f interferes with the receiving groove 16h, and the step 21h of the protruding plate 21f interferes with the tip of the protruding portion 16g, improving the strength against the horizontal load.

The vertical frame 16 thus inserted into the retaining portion 21e is fixed from both sides by fasteners 24 such as screws, as shown in Fig. 4(b). The fasteners 24 attached to both side surfaces of the retaining portion 21e pass through the retaining portion 21e and are screwed into the vertical frame 16 of one of the handrails 11, thereby fixing the retaining portion 21e and the vertical frame 16. The fasteners 24 need to be attached in at least two locations, top and bottom, and may be attached in three or more locations.
The configuration in which the first connecting member 21 holds the vertical frame 16 is not limited to that in the above-described embodiment, and various configurations are possible.

For example, as shown in Fig. 18(a) and Fig. 18(b), the vertical frame 16 may be held by fitting or the like. Specifically, as shown in Fig. 18(a), a fixed piece 21i may be protruded from the holding portion 21e of the first connecting member 21, and a locking piece 16j that fits into the fixed piece 21i may be provided on the front surface 16a of the vertical frame 16 inserted into the holding portion 21e, and the fixed piece 21i and the locking piece 16j may be fitted together and fixed from both sides by fasteners (not shown). Also, as shown in Fig. 18(b), the protruding plate 21f of the first connecting member 21 may completely cover the side surface 16b of the vertical frame 16, and the tip of the protruding plate 21f may be hooked to the corner of the rear surface 16c to engage the protruding plate 21f with the rear surface 16c, and fixed from both sides by fasteners (not shown). Also, although not specifically shown, a recess may be formed in the retaining portion 21e, and a locking piece may be provided integrally or separately on the front surface 16a of the vertical frame 16, and this locking piece may be fitted into the recess.

The second connecting member 22 is a member fixed to one of the bodies 51, and is an elongated aluminum extrusion formed to be slightly longer than the first connecting member 21. As shown in Figures 3 and 9, the second connecting member 22 includes a fixing portion 22a, and side plate portions 22b and groove forming portions 22d that protrude forward from the left and right ends of the fixing portion 22a, respectively.
The fixed portion 22a is a portion that is fixed to one of the frames 51. The fixed portion 22a is fixed to one of the frames 51 by a fastener 25 such as an anchor bolt.

The side plate portion 22b is a portion that protrudes forward from the fixed portion 22a almost perpendicularly. At the tip of this side plate portion 22b, a claw portion 22c is formed for fitting the decorative cover material 26 described below.

The groove forming portion 22d is a portion for forming the holding groove 22e, and protrudes forward from the fixed portion 22a in approximately parallel to the side plate portion 22b described above. The holding groove 22e is a groove for rotatably holding the above-mentioned rotating shaft 21c. As shown in FIG. 9, the holding groove 22e according to this embodiment is formed in an approximately C-shape. This holding groove 22e is formed over the entire longitudinal length of the second connecting member 22. Since the second connecting member 22 is longer than the first connecting member 21, this holding groove 22e is also longer than the rotating shaft 21c formed over the entire length of the first connecting member 21.

As shown in FIG. 9, a fall prevention means 23 is provided near the lower end of the holding groove 22e to prevent the rotating shaft 21c from falling out of the lower opening of the holding groove 22e. The rotating shaft 21c is held inside the holding groove 22e above the fall prevention means 23, and cannot move below the fall prevention means 23.

The fall prevention means 23 according to this embodiment includes a nut 23a arranged inside the holding groove 22e and a nut mounting screw 23b for mounting the nut 23a. The nut mounting screw 23b is mounted so as to penetrate the fixing portion 22a and protrude into the inside of the holding groove 22e, and the nut 23a is mounted on the shaft of the nut mounting screw 23b. The inner peripheral surface of the holding groove 22e is provided with a recessed groove 22f for holding the nut 23a. The recessed groove 22f is for guiding the nut 23a so that it can slide up and down along the longitudinal direction of the holding groove 22e, and is formed by cutting out two opposing places on the inner circumference of the holding groove 22e in an approximately U-shaped shape. When fixing the nut 23a inside the holding groove 22e, the nut 23a is moved to a predetermined position along the recessed groove 22f, and the nut mounting screw 23b is attached so as to penetrate the nut 23a. By fixing the nut 23a in this way, the nut 23a forms the fall prevention means 23 that blocks the retaining groove 22e. In addition, because the outer peripheral surface of the nut 23a is supported by the recessed groove 22f, the nut 23a can be prevented from rotating when the nut mounting screw 23b is rotated to attach it to the nut 23a, and the fall prevention means 23 can be easily formed.

Furthermore, the fall-off prevention means 23 is not limited to the above-mentioned embodiment. For example, the fall-off prevention means 23 may be configured with the holding groove 22e and a screw (not shown). Specifically, a screw may be screwed into the lower opening of the holding groove 22e formed in the shape of a screw hole, and the tip of the screw may face the lower end of the rotating shaft 21c, thereby preventing the rotating shaft 21c from falling off. If the fall-off prevention means 23 is configured using the holding groove 22e in this way, there is no need to provide a hole for the screw, and processing costs can be reduced.

As shown in FIG. 8, the retaining groove 22e has a concave groove 22f formed on the inner peripheral surface and a convex portion 22g formed on the opening edge. The concave groove 22f is for accommodating the anti-rotation protrusions 21d of the rotating shaft 21c, and is formed in two locations facing each other. The convex portion 22g is formed to face the shaft support portion 21b that supports the rotating shaft 21c. The concave groove 22f and the convex portion 22g constitute a rotation restriction means that restricts the rotation of the rotating shaft 21c.

This rotation restriction means works as shown in Figure 8. That is, when the rotating shaft 21c rotates to the maximum angle inside the holding groove 22e, the rotation prevention protrusion 21d abuts against the wall of the recessed groove 22f, and the shaft support portion 21b abuts against the convex portion 22g, thereby restricting the rotation of the rotating shaft 21c. In this embodiment, since the rotation prevention protrusion 21d and the recessed groove 22f are provided on both sides, the rotation is restricted at three points: the recessed grooves 22f on both sides and the convex portion 22g on the opening edge. This allows the load on the convex portion 22g to be distributed to three points, preventing damage to the convex portion 22g.

The groove forming portion 22d has a locking portion 22h formed on the side surface facing the side plate portion 22b. This locking portion 22h is for fitting the decorative cover material 26 described below.

As shown in FIG. 3, the decorative cover material 26 is a cover that is attached to the second connecting member 22 from the outside, and is a long plate-like member formed with approximately the same length as the second connecting member 22. As shown in FIG. 9, the decorative cover material 26 has a first attachment end 26a that engages with the claw portion 22c described above, and a second attachment end 26b that engages with the locking portion 22h described above. The first attachment end 26a and the second attachment end 26b are fitted into the second connecting member 22, so that the decorative cover material 26 can be attached to the second connecting member 22 with one touch. By attaching the decorative cover material 26 to the second connecting member 22, the surface of the second connecting member 22 can be covered, and the fastener 25 for fixing the second connecting member 22 to the frame can be covered so that it is not exposed to the outside.

As shown in Fig. 4(a), the end cover 27 is a plate-like member attached to the upper surfaces of the second connecting member 22 and the decorative covering material 26. The end cover 27 is fixed to the upper surfaces of the second connecting member 22 and the decorative covering material 26 by fasteners 28 such as screws. The fasteners 28 penetrate the end cover 27 and are screwed into screw holes formed in the second connecting member 22 and the decorative covering material 26. This makes it possible for the end cover 27 to prevent the decorative covering material 26 from falling off even if the engagement between the second connecting member 22 and the decorative covering material 26 comes loose.
The above-mentioned rotation connecting means 20 is assembled, for example, in the following procedure.

That is, first, as shown in FIG. 5(a) and FIG. 5(b), the fixing portion 22a of the second connecting member 22 is fixed to the surface of one of the bodies 51 with a fixing device 25. Then, the rotation shaft 21c of the first connecting member 21 and the holding groove 22e of the second connecting member 22 are rotatably connected. For example, the first connecting member 21 is lifted, and the rotation shaft 21c is inserted from the end of the holding groove 22e and slid. This completes the rotation connecting means 20 that has been positioned horizontally and vertically with respect to the body.

Then, as shown in FIG. 5(b), the decorative cover material 26 is attached so as to cover the fixing device 25. The decorative cover material 26 is fitted and fixed to the second connecting member 22, so it can be attached simply by pressing it against the second connecting member 22 without the need for fasteners such as screws. After the decorative cover material 26 is attached to the second connecting member 22, an end cover 27 is attached to the upper surface of the second connecting member 22 and the decorative cover material 26.

Next, as shown in Fig. 6(a), the vertical frame 16 of one handrail 11 is inserted horizontally into the holding portion 21e, thereby connecting the pivot connection means 20 and the handrail.
Finally, as shown in FIG. 6B, fasteners 24 such as screws are attached to both sides of the holding portion 21e to complete the work.

With this configuration, by attaching the pivot connection means 20 to the pivot connection target (body) before attaching the handrail, assembly can be easily performed without lifting the handrail. In addition, one body 51 and one handrail 11 can be connected without the need to work in a narrow space. It is also easy to attach the pivot connection means 20 vertically or adjust the height of the pivot connection means 20 to make one handrail 11 and the other handrail 12 horizontal.

In this embodiment, the end cover 27 is attached only to the upper surface of the second connecting member 22 and the decorative cover material 26. By configuring it in this way, the bottom surface of the pivot connecting means 20 is open, so water or the like does not accumulate inside. However, if such an effect is not expected, the end cover 27 may be attached to the bottom surface.

The sliding connection member 30 is used to slidably connect one handrail 11 and the other handrail 12, and is made of an extruded aluminum material. This sliding connection member 30 is fixed to one handrail 11 and is designed to slidably engage with the sliding groove 13d formed on the side of the other handrail 12.

As shown in FIG. 11(a), the sliding connecting member 30 includes a vertical plate portion 30a fixed to the side of one handrail 11. A protruding support portion 30e is formed on one side of the vertical plate portion 30a (the side facing the other handrail 12), and a sliding protrusion 30f having a substantially elliptical cross section is provided at the tip of the protruding support portion 30e. The sliding protrusion 30f slidably engages with the sliding groove 13d of the upper horizontal frame 13 and the sliding groove 15d of the lower horizontal frame 15. In addition, a first engaging protrusion 30b protruding in a rib shape and a bent plate portion 30c protruding in a substantially L-shape are formed on the other side of the vertical plate portion 30a (the side facing the one handrail 11). The first engaging protrusion 30b is a protrusion that engages with the opening edge of the sliding groove 13d, 15d when the sliding connecting member 30 is fixed to the upper horizontal frame 13 or the lower horizontal frame 15. In this embodiment, the first engagement projections 30b are formed in two, one above the other, and are parallel to each other. The bent plate portion 30c protrudes horizontally from the lower end of the vertical plate portion 30a, and a second engagement projection 30d that engages with the lower surface of the upper horizontal frame 13 is formed on the tip of the bent plate portion 30c facing upward.
In this embodiment, two first engagement projections 30b are formed, one above the other, but this is not limiting, and the two projections, one above and one below, may be integrated into one projection.

In addition to or instead of the first engagement protrusion 30b described above, a recess (not shown) may be provided in the thick portion 13e, 15e of the upper horizontal frame 13 or the lower horizontal frame 15, and a protrusion may be provided on the vertical plate portion 30a of the sliding connecting member 30, and the recess and the protrusion may be engaged. In this case, the protrusion provided on the vertical plate portion 30a is formed in a position above the first engagement protrusion 30b and facing the recess. With such a protrusion, the same effect as the first engagement protrusion 30b can be obtained.

When this sliding connecting member 30 is fixed to the upper horizontal frame 13 of one handrail 11, as shown in Figure 11 (b), the first engagement protrusion 30b is engaged with the opening edge of the sliding groove 13d of the upper horizontal frame 13. Also, the second engagement protrusion 30d is engaged with the engagement groove 13f on the underside of the upper horizontal frame 13. In this state, as shown in Figure 10 (a), a fastener 32 such as a screw is attached so as to penetrate the vertical plate portion 30a and the thick portion 13e, and fixed.

Similarly, when fixing the sliding connecting member 30 to the lower horizontal frame 15 of one handrail 11, the first engaging projection 30b is engaged with the opening edge of the sliding groove 15d of the lower horizontal frame 15. The second engaging projection 30d is engaged with the engaging groove 15f on the underside of the lower horizontal frame 15. In this state, as shown in FIG. 10(b), a fastener 32 such as a screw is attached so as to penetrate the vertical plate portion 30a and the thick portion 15e, and then fixed.

When the sliding connecting member 30 is fixed to one handrail 11 in this way, the sliding protrusion 30f protrudes to the side of the one handrail 11. If this sliding protrusion 30f is engaged with the sliding groove 13d of the upper horizontal frame 13 or the sliding groove 15d of the lower horizontal frame 15 of the other handrail 12, the one handrail 11 and the other handrail 12 can be slidably connected.

The length of the sliding connection member 30 in the longitudinal direction of the handrail can be set as desired. In this embodiment, as shown in FIG. 1, the length of the sliding connection member 30 is set according to the length at which one handrail 11 and the other handrail 12 slidably overlap. For this reason, the sliding connection member 30 is formed shorter than the length of one handrail 11 and the other handrail 12, which allows for weight and cost reduction. In addition, there is no need to provide a sliding protrusion on the handrail, improving design.

In addition, the sliding protrusion 30f and sliding grooves 13d, 15d according to this embodiment are formed in an elliptical shape. By forming the sliding portion in an elliptical shape in this way, the sliding protrusion 30f and the sliding grooves 13d, 15d are configured to contact at a point when viewed in cross section, reducing friction. Reducing friction allows for smooth sliding in the sliding portion.

In addition, the first engaging protrusion 30b and the second engaging protrusion 30d allow for easy positioning, and by engaging with the sliding grooves 13d, 15d and the engaging grooves 13f, 15f, the strength against horizontal and vertical loads can be improved, allowing for firm fixation.

With this configuration, even if the two bodies are displaced in the D1 or D2 direction, as shown in FIG. 12, one handrail 11 and the other handrail 12 can rotate and slide to follow the displacement.

As described above, according to this embodiment, the pivotal connection means 20 that connects one handrail 11 and one body 51 includes a first connection member 21 fixed to one handrail 11 and a second connection member 22 fixed to one body 51, and the first connection member 21 includes a holding portion 21e that supports the vertical frame 16 of the one handrail 11, and the holding portion 21e is fixed to the vertical frame 16 of the one handrail 11 from the side of the one handrail 11 by a fastener 24. With this configuration, the pivotal connection means 20 can be attached to the one handrail 11 simply by inserting the vertical frame 16 of the one handrail 11 into the holding portion 21e and fixing it from the side with a fastener 24 such as a screw.

In other words, since the handrails 11 can be fixed with fasteners 24 such as screws from the side surface 16b of the handrails 11, which has a larger working space, rather than from the front surface 16a (the surface facing the pivoting connection means 20) of the handrails 11, there is no need to work in the narrow space between the handrails 11 and the main frame 51. Also, since the handrails are fixed to the pivoting connection means 20 in a state that is already horizontal and vertical to the main frame, the connection work can be easily performed.

In addition, a receiving groove 16h that engages with the tip 21g of the retaining portion 21e is formed on the side surface 16b of the vertical frame 16 of one of the handrails 11 to which the first connecting member 21 is attached. With this configuration, the receiving groove 16h can improve strength against horizontal loads.

The vertical frame 16 also has a side surface (thick portion 16i) that is thicker than other portions in order to be fixed to the first connecting member 21 with fasteners 24. With this configuration, fasteners 24 such as screws are attached to the thick side surface (thick portion 16i) of the vertical frame 16, improving the fixing strength and improving the strength against horizontal and vertical loads, thereby preventing the first connecting member 21 from falling off.

In addition, the first connecting member 21 and the second connecting member 22 have a rotating shaft 21c formed on one side and a holding groove 22e formed on the other side to rotatably hold the rotating shaft 21c. The rotating shaft 21c has a rotation prevention protrusion 21d protruding from its outer periphery and is supported by the shaft support portion 21b. The holding groove 22e has a recessed groove 22f formed on its inner periphery to accommodate the rotation prevention protrusion 21d, and a convex portion 22g facing the shaft support portion 21b is formed on the opening edge. When the rotating shaft 21c rotates in the holding groove 22e, the rotation prevention protrusion 21d abuts against the recessed groove 22f, and the shaft support portion 21b abuts against the convex portion 22g, thereby suppressing the rotation of the rotating shaft 21c. With this configuration, the rotation range of the rotating shaft 21c can be restricted, and the load on the convex portion 22g can be distributed to prevent damage to the convex portion 22g. In this embodiment, the pivot shaft 21c is formed in the first connecting member 21 and the holding groove 22e is formed in the second connecting member 22, but this is not limited to the above, and the holding groove may be formed in the first connecting member 21 and the pivot shaft may be formed in the second connecting member 22.

The pivot shaft 21c is also shorter than the longitudinal length of the retaining groove 22e. This configuration allows the pivot shaft 21c to move up and down inside the retaining groove 22e, so it can follow the displacement of the body in the height direction.

The holding groove 22e is provided with a fall prevention means 23 for preventing the pivot shaft 21c from falling out of the lower opening of the holding groove 22e. This configuration makes it possible to prevent the pivot shaft 21c from falling out.

The second connecting member 22 is provided with a fastener 25 for fastening it to one of the bodies 51, and a decorative cover material 26 is attached to the second connecting member 22 so as to cover the fastener 25. With this configuration, the fastener 25 is not exposed, improving the design.

In addition, an end cover 27 is attached to the upper surface of the decorative cover material 26. This configuration improves the design and prevents the decorative cover material 26 from falling off.

The present invention also includes a sliding connection member 30 that connects one handrail 11 and the other handrail 12, and the sliding connection member 30 is fixed to one handrail 11 and may slidably engage with a sliding groove 13d formed on the side of the other handrail 12. With this configuration, the sliding connection member 30 can be made to the minimum length required, which is shorter than the longitudinal length of one handrail 11, thereby reducing weight and manufacturing costs and improving design. In other words, when a slidingly engageable protrusion is provided on the handrail as in the conventional configuration, the protrusion must be formed over the entire length of the handrail, but if the sliding connection member 30 is provided as a separate member from the handrail as in the present invention, the length of the protrusion can be adjusted, so there is no need to provide an unnecessary protrusion.

The upper horizontal frames 13 of the first handrail 11 and the second handrail 12 are members of the same cross-sectional shape with a sliding groove 13d formed therein, and a sliding protrusion 30f that slidably engages with the sliding groove 13d is formed on one side of the sliding connecting member 30, and an engaging protrusion 30b that engages with the sliding groove 13d when the sliding connecting member 30 is fixed to the upper horizontal frame 13 is formed on the other side of the sliding connecting member 30. With this configuration, the upper horizontal frames 13 of the first handrail 11 and the second handrail 12 can be formed from the same material, thereby reducing manufacturing costs. In addition, the engaging protrusion 30b improves strength against horizontal and vertical loads and makes positioning during installation easier.

The upper horizontal frame 13 also has a side wall portion (thick portion 13e) that is thicker than other portions in order to secure the sliding connecting member 30 with fasteners 32. With this configuration, fasteners 32 such as screws are attached to the thick portions of the upper horizontal frame 13, improving the fixing strength and improving the strength against horizontal and vertical loads, preventing the sliding connecting member 30 from falling off during displacement.

In this embodiment, as shown in FIG. 1, the center of rotation of one handrail 11 relative to one body 51 and the center of rotation of the other handrail 12 relative to the other body 52 are arranged on the same straight line L parallel to the sliding direction (longitudinal direction) of the one handrail 11 and the other handrail 12. Therefore, as shown in FIG. 12, even if the two bodies are displaced in the D1 direction or D2 direction and the one handrail 11 and the other handrail 12 rotate and slide, the force pushing and pulling the rotation axis 21c of the one handrail 11 and the other handrail 12 acts parallel to the sliding direction, so they can slide against each other smoothly. In addition, the small gap (about the width of the protrusion support part 30e) between the sliding grooves 13d, 15d and the sliding protrusion 30f allows for even smoother sliding.

(Modification)
In the above embodiment, a case has been described in which one body 51 is a rotation connection object that is rotatably connected to one handrail 11, and the other handrail 12 is a sliding connection object that is slidably connected to one handrail 11, but the embodiment of the present invention is not limited to this. In this modified example, an example will be described in which the other handrail 12 is a rotation connection object that is rotatably connected to one handrail 11, and one body 51 is a sliding connection object that is slidably connected to one handrail 11.

As shown in FIG. 13, the expansion joint cover device 10 according to this modified example is provided in the gap 50 between two bodies, and includes one handrail 11 attached to one body 51, the other handrail 12 attached to the other body 52, a pivot connection means 20 that pivotally connects the one handrail 11 and the other handrail 12, a sliding connection member 31 that slidably connects the one handrail 11 and the one body 51, and a sliding connection member 31 that slidably connects the other handrail 12 and the other body 52. The one handrail 11 and the other handrail 12 are connected to each other and disposed in the gap 50 between the one body 51 and the other body 52.

As shown in Fig. 13, one handrail 11 and the other handrail 12 are arranged at a substantially right angle in a plan view. The side surface of one handrail 11 and one body 51 are arranged so as to overlap partially, and a sliding connecting member 31 is provided at this overlapping portion. The side surface of the other handrail 12 and the other body 52 are arranged so as to overlap partially, and a sliding connecting member 31 is provided at this overlapping portion.
The configurations of the one handrail 11 and the other handrail 12 are similar to those of the first embodiment described above.

The configuration of the pivot connection means 20 is also the same as in the first embodiment described above. However, in this modified example, the second connection member 22 of the pivot connection means 20 is not fixed to the main body, but is fixed to the vertical frame 16 of the other handrail 12, as shown in FIG. 15.

The sliding connection member 31 is an aluminum extrusion that slidably connects the first handrail 11 and the second handrail 12 to the main body. It is fixed to the main body and slidably engages with the sliding grooves 13d, 15d formed on the side of the first handrail 11 and the second handrail 12.

As shown in Figures 14 and 16, the sliding connection member 31 has a vertical plate portion 31a that is fixed to the surface of one body 51 and the other body 52. A protrusion support portion 31b is formed to protrude from the vertical plate portion 31a, and a sliding protrusion 31c having a substantially elliptical cross section is provided at the tip of the protrusion support portion 31b. The sliding protrusion 31c slidably engages with the sliding grooves 13d and 15d.

When fixing the sliding connecting member 31 to the body, as shown in FIG. 16, the vertical plate portion 31a is brought into contact with the surface of the body, and a fixing device 25 such as an anchor bolt is driven into the body so as to penetrate the vertical plate portion 31a.

When the sliding connecting member 31 is fixed to the body in this way, the sliding protrusion 31c protrudes to the side of the body. By engaging this sliding protrusion 31c with the sliding groove 13d of the upper horizontal frame 13 or the sliding groove 15d of the lower horizontal frame 15, one handrail 11 and one body 51 can be slidably connected, and the other handrail 12 and the other body 52 can be slidably connected.

Even with this configuration, as shown in Figure 17, for example, when the two bodies are displaced in the D3 or D4 direction, one handrail 11 and the other handrail 12 can rotate and slide to follow the displacement.

Whether to use the configuration according to this modified example or the configuration according to the first embodiment described above can be selected appropriately, taking into consideration the relative positions of the structure and the gap 50. Furthermore, when handrails are placed on both sides of the passage, the configuration according to the first embodiment described above may be placed on both sides, the configuration according to the modified example described above may be placed on both sides, or the configuration according to the first embodiment described above may be placed on one side and the configuration according to the modified example described above may be placed on one side and used in combination.

Although not specifically shown, a floor expansion joint cover device may be provided on the floor surface. In this case, the expansion joint cover device 10 according to the first embodiment described above or the expansion joint cover device 10 according to the modified example described above may be placed on both or one side or upper part of the floor expansion joint cover device.

10 Expansion joint cover device 11 One handrail 12 The other handrail 13 Upper horizontal frame 13a Top plate portion 13b Bottom plate portion 13c One side wall portion 13d Sliding groove 13e Thick portion 13f Engagement groove 13g The other side wall portion 15 Lower horizontal frame 15a Top plate portion 15c One side wall portion 15d Sliding groove 15e Thick portion 15f Engagement groove 15g The other side wall portion 16 Vertical frame 16a Front surface 16b Side surface 16c Rear surface 16d Engagement surface 16e Abutment surface 16f Exposed surface 16g Protruding portion 16h Receiving groove 16i Thick portion 16j Locking piece 17 Intermediate vertical frame 20 Rotating connecting means 21 First connecting member 21a Square pillar portion [0033] 21b Shaft support portion 21c Rotating shaft 21d Anti-rotation protrusion 21e Holding portion 21f Protruding plate 21g Tip portion 21h Step 21i Fixing piece 22 Second connecting member 22a Fixing portion 22b Side plate portion 22c Claw portion 22d Groove forming portion 22e Holding groove 22f Concave groove 22g Convex portion 22h Locking portion 23 Fall-off prevention means 23a Nut 23b Nut mounting screw 24 Fastener 25 Fixing device 26 Decorative cover material 26a First mounting end portion 26b Second mounting end portion 27 End cover 28 Fastener 30 Sliding connecting member 30a Vertical plate portion 30b First engaging protrusion 30c Bent plate portion 30d Second engaging protrusion 30e Protrusion support portion 30f Sliding protrusion 31 Sliding connecting member 31a Vertical plate portion 31b Protrusion support portion 31c Sliding protrusion 32 Fastener 50 Gap 51 One body 52 Other body L Straight line

Claims (11)

An expansion joint cover device comprising a handrail attached to one body side and a handrail attached to the other body side, the handrail being connected to the other handrail and disposed in a gap between the one body side and the other body side,
The one handrail and the other handrail are formed by two vertical frames, an upper horizontal frame, and a lower horizontal frame on all four sides,
The one handrail is rotatably connected to the other handrail and slidably connected to the one body,
The pivotal connecting means connecting the one handrail and the other handrail includes a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail,
The first connecting member includes a holding portion that supports the vertical frame of the one handrail,
An expansion joint cover device, wherein the retaining portion has two protruding plates covering both side surfaces of the vertical frame of the one handrail and is fixed to the vertical frame of the one handrail by a fastener from the side surface of the one handrail. An expansion joint cover device comprising a handrail attached to one body side and a handrail attached to the other body side, the handrail being connected to the other handrail and disposed in a gap between the one body side and the other body side,
The one handrail and the other handrail are formed by two vertical frames, an upper horizontal frame, and a lower horizontal frame on all four sides,
The one handrail is rotatably connected to the other handrail and slidably connected to the one body,
The pivotal connecting means connecting the one handrail and the other handrail includes a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail,
The first connecting member includes a holding portion that supports the vertical frame of the one handrail,
The holding portion is fixed to a vertical frame of the one handrail by a fastener from a side surface of the one handrail ,
An expansion joint cover device , in which a receiving groove that engages with the tip end of the retaining portion is formed on the side of the vertical frame of the one handrail to which the first connecting member is attached. An expansion joint cover device comprising a handrail attached to one body side and a handrail attached to the other body side, the handrail being connected to the other handrail and disposed in a gap between the one body side and the other body side,
The one handrail and the other handrail are formed by two vertical frames, an upper horizontal frame, and a lower horizontal frame on all four sides,
The one handrail is rotatably connected to the other handrail and slidably connected to the one body,
The pivotal connecting means connecting the one handrail and the other handrail includes a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail,
The first connecting member includes a holding portion that supports the vertical frame of the one handrail,
The holding portion includes two protruding plates that cover both side surfaces of the vertical frame of the one handrail, and is fixed to the vertical frame of the one handrail by a fastener from the side surface of the one handrail ,
An expansion joint cover device , in which a receiving groove that engages with the tip end of the retaining portion is formed on the side of the vertical frame of the one handrail to which the first connecting member is attached. An expansion joint cover device comprising a handrail attached to one body side and a handrail attached to the other body side, the handrail being connected to the other handrail and disposed in a gap between the one body side and the other body side,
The one handrail and the other handrail are formed by two vertical frames, an upper horizontal frame, and a lower horizontal frame on all four sides,
The one handrail is rotatably connected to the other handrail and slidably connected to the one body,
The pivotal connecting means connecting the one handrail and the other handrail includes a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail,
The first connecting member includes a holding portion that supports the vertical frame of the one handrail,
The holding portion is fixed to a vertical frame of the one handrail by a fastener from a side surface of the one handrail ,
a rotation shaft is formed on one of the first connecting member and the second connecting member, and a holding groove for rotatably holding the rotation shaft is formed on the other of the first connecting member and the second connecting member,
The rotating shaft has a rotation prevention protrusion formed on an outer periphery thereof and is supported by a shaft support portion,
The retaining groove has an inner circumferential surface formed with a concave groove for accommodating the anti-rotation protrusion, and an opening edge formed with a convex portion facing the shaft support portion,
An expansion joint cover device in which, when the rotating shaft rotates in the retaining groove, the anti-rotation protrusion abuts against the concave groove and the shaft support portion abuts against the convex portion, thereby suppressing rotation of the rotating shaft. The expansion joint cover device according to claim 4, wherein the rotation axis is shorter than the longitudinal length of the retaining groove. The expansion joint cover device according to claim 4 or 5, wherein the retaining groove is provided with a fall prevention means for preventing the pivot shaft from falling out of the lower opening of the retaining groove. An expansion joint cover device comprising a handrail attached to one body side and a handrail attached to the other body side, the handrail being connected to the other handrail and disposed in a gap between the one body side and the other body side,
The one handrail and the other handrail are formed by two vertical frames, an upper horizontal frame, and a lower horizontal frame on all four sides,
The one handrail is rotatably connected to the other handrail and slidably connected to the one body,
The pivotal connecting means connecting the one handrail and the other handrail includes a first connecting member fixed to the one handrail and a second connecting member fixed to the other handrail,
The first connecting member includes a holding portion that supports the vertical frame of the one handrail,
The holding portion is fixed to a vertical frame of the one handrail by a fastener from a side surface of the one handrail ,
A fastener for fastening the second connecting member to the other handrail is provided,
An expansion joint cover device , wherein a decorative cover material is attached to the second connecting member so as to cover the fastener . The expansion joint cover device according to claim 7, in which an end cover is attached to the upper surface of the decorative cover material. A sliding connecting member is provided to connect the one handrail and the one frame,
The expansion joint cover device according to any one of claims 1 to 8, wherein the sliding connecting member is fixed to the one of the main bodies and slidably engages with a sliding groove formed on a side of the one of the handrails. The upper horizontal frames of the one handrail and the other handrail are members having the same cross-sectional shape in which the sliding groove is formed,
A sliding protrusion that is slidably engaged with the sliding groove is formed on one side surface of the sliding connection member,
The expansion joint cover device according to claim 9, wherein the other side of the sliding connecting member is formed with an engaging protrusion that engages with the sliding groove when the sliding connecting member is fixed to the upper horizontal frame. The expansion joint cover device according to claim 10, wherein the upper horizontal frame has a side wall portion formed thicker than other portions in order to fix the sliding connecting member with a fastener.

Images