Handrail mounting brackets, handrail units, and handrail mounting structures

Abstract

The present invention provides a handrail mounting bracket that prevents rainwater and other elements from entering the connecting portion from above, which allows for vertical movement and horizontal rotation of the handrail mounting bracket. [Solution] The handrail mounting bracket 3 according to the present invention comprises a shaft unit and a rail unit, the shaft unit and the rail unit are connected so as to be movable vertically and rotatable horizontally, the shaft unit has a shaft fitting 31 and a shaft cover 33 that covers the upper end portion of the shaft fitting 31, the rail unit has a rail fitting 32 and a rail cover 35 that covers the upper end portion of the rail fitting 32, the rail cover 35 has an opening formed therein through which the slide shaft portion of the shaft fitting 31 is inserted, and the shaft cover 33 abuts against the rail cover 35 and closes the upper side of the opening.

Description

Technical Field

[0001] The present invention relates to a handrail mounting fitting for attaching a handrail to a body, a handrail unit attached to the body, and a mounting structure of a handrail attached to the body.

Background Art

[0002] An expansion joint cover device for rotatably providing a handrail between two bodies has been proposed (for example, see Patent Document 1). The expansion joint cover device (10) described in Patent Document 1 includes one handrail (11) attached to one body (51) side, the other handrail (12) attached to the other body (52) side, a rotation connection means (20) for connecting the one handrail (11) and the other handrail (12) to the bodies (51, 52) respectively, and a sliding connection member (30) for slidably connecting the one handrail (11) and the other handrail (12).

[0003] The rotation connection means (20) includes a first connection member (21), a second connection member (22), a decorative cover material (26), and an end cover (27), and is assembled in the following procedure. That is, the fixing portion (22a) of the second connection member (22) is fixed to the surface of one body (51) with a fixture (25). Then, the rotation shaft (21c) of the first connection member (21) and the holding groove (22e) of the second connection member (22) are rotatably connected. Thereby, the rotation connection means (20) with horizontal and vertical positioning with respect to the body (51) is constituted. Thereafter, the decorative cover material (26) is attached so as to cover the fixture (25). When the decorative cover material (26) is attached to the second connection member (22), the end cover (27) is attached to the upper surfaces of the second connection member (22) and the decorative cover material (26). Next, the vertical frame (16) of one handrail (11) is inserted into the holding portion (21e) from the horizontal direction. Thereby, the rotation connection means (20) and the handrail (11) are connected. Finally, when fasteners (24) such as screws are attached from both sides of the holding portion (21e), the work is completed.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-67076 [Overview of the project] [Problems that the invention aims to solve]

[0005] However, since end covers (27) are attached to the upper surfaces of the second connecting member (22) and decorative cover material (26), it is possible to prevent rainwater, etc. from entering the retaining groove (22e) from above. However, as shown in Figure 4 of Patent Document 1, the upper surface of the first connecting member (21) is lower than the upper surface of the second connecting member (22), so the structure allows rainwater, etc. to enter the retaining groove (22e) through the opening of the groove forming part (22d). In cold regions, rainwater, etc. that enters the retaining groove (22e) may freeze, causing the pivot shaft (21c) and the retaining groove (22e) to freeze and become unable to rotate. If an earthquake occurs when the pivot shaft (21c) and the retaining groove (22e) are frozen, there is a risk that one handrail (11) and the other handrail (12) will be damaged.

[0006] Therefore, the present invention aims to solve the above problems and provide a handrail mounting bracket and handrail unit that prevent rainwater and the like from entering the connecting portion from above, which allows the handrail mounting bracket to move vertically and rotate horizontally. [Means for solving the problem]

[0007] The handrail mounting bracket according to the present invention comprises a shaft unit to be attached to a handrail and a rail unit to be attached to a building structure, wherein the shaft unit and the rail unit are connected to each other so as to be movable in the vertical direction and rotatable in the horizontal direction, the shaft unit has a shaft fitting to be attached to the handrail and a shaft cover that covers the upper end portion of the shaft fitting, the rail unit has a rail fitting to be attached to the building structure and a rail cover that covers the upper end portion of the rail fitting, the rail cover has an opening formed therein for inserting the slide shaft portion of the shaft fitting, and the shaft cover abuts against the rail cover to close the upper side of the opening.

[0008] The handrail unit according to the present invention is characterized by comprising a first handrail and a second handrail that are slidable relative to each other, and a handrail mounting bracket for attaching the first handrail to a first structure and the second handrail to a second structure.

[0009] The handrail mounting structure according to the present invention is a handrail mounting structure in which a handrail is attached to a building structure using a handrail mounting bracket, wherein the rail unit is fixed to the building structure by a fixing member, and in a plan view, the fixing member is positioned to coincide with a first imaginary line passing through the center in the width direction of the building structure. Furthermore, the handrail mounting structure according to the present invention is a handrail mounting structure in which a handrail is attached to a building structure using a handrail mounting bracket, and in a plan view, the rotation center of the shaft unit is positioned to coincide with a second imaginary line passing through the center in the width direction of the handrail. [Effects of the Invention]

[0010] The handrail mounting bracket according to the present invention can prevent rainwater and other liquids from entering through the opening.

[0011] According to the handrail unit of the present invention, the first handrail and the second handrail can be attached to the first and second structural bodies so as to be movable in the vertical direction and rotatable in the horizontal direction.

[0012] According to the handrail mounting structure of the present invention, the fixing member can be installed in the most stable position on the first and second structural bodies. As a result, even if the surface of the first and second structural bodies is damaged due to an earthquake or the like, the fixing member is less likely to fall off the first and second structural bodies. Furthermore, when the first handrail (second handrail) and the shaft unit rotate, the load on the first handrail (second handrail) becomes uniform in the width direction of the first handrail (second handrail), making it easier for the first handrail (second handrail) and the shaft unit to rotate evenly to the left and right. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing the overall structure of a handrail mounting according to one embodiment of the present invention. [Figure 2] This is a front view showing the overall structure of the handrail installation in the same embodiment. [Figure 3] This is a cross-sectional view AA in Figure 1 of the same embodiment. [Figure 4] This is a front view including a partial cross-section showing the mounting state of the upper and lower portions of the handrail mounting bracket of the same embodiment. [Figure 5] This is an exploded plan view of the shaft fitting and rail fitting of the same embodiment. [Figure 6] This is a cross-sectional view of BB in Figure 4 of the same embodiment. [Figure 7] This is a cross-sectional view of CC in Figure 4 of the same embodiment. [Figure 8] This is a plan view showing the handrail mounting bracket and its surroundings in the same embodiment. [Figure 9] This is a front view of the rail unit in the same embodiment with the fall prevention bracket in an unfixed state. [Figure 10] This is an explanatory diagram showing the installation position of the anchor bolts in the embodiment and the positional relationship between the center of the slide shaft and the first handrail. [Figure 11] This is an explanatory diagram showing the state in which the first frame and rail unit of the same embodiment have moved downward due to an earthquake. [Figure 12]It is an explanatory diagram showing the state in which the first handrail and the shaft unit of the same embodiment have rotated due to an earthquake.

Mode for Carrying Out the Invention

[0014] Preferred embodiments of the present invention will be described with reference to the accompanying drawings. Note that not all of the configurations described below are essential requirements of the present invention.

[0015] FIG. 1 and FIG. 2 show a state in which a handrail unit according to an embodiment of the present invention is attached to a first housing M1 and a second housing M2. The first housing M1 and the second housing M2 of adjacent condominiums etc. have a predetermined interval T. The handrail unit includes a first handrail 1 and a second handrail 2 which are a pair of handrails slidable relative to each other, and a handrail mounting fitting 3 for attaching the first handrail 1 and the second handrail 2 to the first housing M1 and the second housing M2 respectively. Since the handrail mounting fitting 3 for attaching the first handrail 1 to the first housing M1 and the handrail mounting fitting 3 for attaching the second handrail 2 to the second housing M2 have the same shape, hereinafter, the mounting structure of the handrail for attaching the first handrail 1 to the first housing M1 by the handrail mounting fitting 3 will be described, and the description of the mounting structure of the handrail for attaching the second handrail 2 to the second housing M2 will be omitted. Note that the passage portion R1 of the first housing M1 and the passage portion R2 of the second housing M2 are connected by a transfer passage portion R3, and a passage R enabling passage between the first housing M1 and the second housing M2 is formed.

[0016] The first handrail 1 and the second handrail 2 have the same shape and the same structure, and the second handrail 2 is arranged by rotating it 180 degrees in the horizontal direction, and only the directions are different. The first handrail 1 includes a coping 4 extending in a substantially horizontal direction, a lower frame 5 also extending in a substantially horizontal direction, two vertical frames 6 and 7 connecting both ends of the coping 4 and the lower frame 5, and a plurality (11 in this embodiment) of vertical bars 8 arranged between the vertical frames 6 and 7 and connecting to the coping 4 and the lower frame 5.

[0017] As shown in Fig. 3, an upper sliding groove 10 recessed in an arc shape is formed in one side plate portion 9 of the coping 4. The one side plate portion 9 faces the coping 4 of the second handrail 2. Spherical end portions 12 formed at both end portions of the upper connecting body 11 are accommodated in the upper sliding groove 10.

[0018] In one side plate portion 13 of the lower frame 5, a lower sliding groove 14 recessed in an arc shape is formed. The one side plate portion 13 faces the lower frame 5 of the second handrail 2. Spherical end portions 16 formed at both end portions of the lower connecting body 15 are accommodated in the lower sliding groove 14.

[0019] The upper sliding groove 10 and the lower sliding groove 14 have the same shape, and the upper connecting body 11 and the lower connecting body 15 also have the same shape. The first handrail 1 and the second handrail 2 can slide while maintaining a substantially parallel state by the upper connecting body 11 and the lower connecting body 15.

[0020] A pair of screw holes 18 are formed in the inner surface portion 17 of the coping 4. As shown in Figs. 2 to 4, the openings at both ends in the longitudinal direction of the coping 4 are closed by plate-shaped end caps 19, and the end caps 19 are fixed to the coping 4 by screwing screws 20 into the screw holes 18.

[0021] A pair of screw holes 22 are formed in the inner surface portion 21 of the lower frame 5. As shown in Figs. 2 to 4, the openings at both ends in the longitudinal direction of the lower frame 5 are closed by plate-shaped end caps 23, and the end caps 23 are fixed to the lower frame 5 by screwing screws 20 into the screw holes 22. The same-shaped screws 20 are used for fixing the end cap 19 and fixing the end cap 23.

[0022] A pair of locking grooves 24 are formed below the pair of screw holes 22 of the lower frame 5. A plate-shaped restricting fitting 25 is locked into the locking grooves 24. As shown in Figure 4, the tip 26 of the restricting fitting 25 protrudes further toward the first structural frame M1 than the end cap 23. Therefore, the end cap 23 on the side where the restricting fitting 25 is installed is formed to be shorter in the vertical direction. In addition, a plate-shaped fixing plate 27 is locked into the pair of screw holes 22, and by inserting a bolt 28 through the restricting fitting 25 and screwing it into the fixing plate 27, the restricting fitting 25 and the fixing plate 27 are connected in a nearly parallel state, preventing the restricting fitting 25 from falling out of the locking grooves 24.

[0023] As shown in Figures 4 to 6, the handrail mounting bracket 3 comprises a shaft fitting 31 fixed to the vertical frame 6 of the first handrail 1, a rail fitting 32 fixed to the first structure M1, a shaft cover 33 attached to the shaft fitting 31, a metal bush 34 which is a bearing body housed in the rail fitting 32, a rail cover 35 attached to the rail fitting 32, a fall prevention bracket 36, and a vertical cover 37.

[0024] As shown in Figures 5 and 6, the shaft fitting 31 has a vertically elongated rectangular plate-shaped contact surface portion 38 that abuts against the vertical frame 6, a one-side wall portion 39 protruding from one end of the contact surface portion 38 in the short direction, a other-side wall portion 40 protruding from the other end of the contact surface portion 38 in the short direction, a vertically elongated cylindrical slide shaft portion 41, and a vertically elongated rectangular plate-shaped connecting portion 42 that connects the contact surface portion 38 and the slide shaft portion 41. The contact surface portion 38, the one-side wall portion 39, the other-side wall portion 40, the slide shaft portion 41, and the connecting portion 42 have the same length in the longitudinal direction (vertical direction) and are formed integrally.

[0025] One side wall portion 39 is formed to be longer in the protruding direction than the other side wall portion 40. The contact surface portion 38 and the one side wall portion 39 are at a right angle, and the contact surface portion 38 and the other side wall portion 40 are also at a right angle. A pair of screw holes 43 are formed at the connection portion between the contact surface portion 38 and the one side wall portion 39, and at the connection portion between the contact surface portion 38 and the other side wall portion 40. The slide shaft portion 41 and the connecting portion 42 are formed in the central portion in the short direction of the contact surface portion 38. The connecting portion 42 has a receiving portion 44 on one side and a receiving portion 45 on the other side, which the metal bush 34 abuts against, as will be described later.

[0026] As shown in Figure 5, the rail fitting 32 has a vertically elongated rectangular plate-shaped contact surface portion 46 that abuts against the first frame M1, a side wall portion 47 protruding from one end of the contact surface portion 46 in the short direction, another side wall portion 48 protruding from the other end of the contact surface portion 46 in the short direction, a substantially arc-shaped cylindrical bearing portion 49 formed at the tip of the other side wall portion 48, and a support wall portion 50 protruding from the bearing portion 49. The contact surface portion 46, the side wall portion 47, the other side wall portion 48, the bearing portion 49, and the support wall portion 50 have the same length in the longitudinal direction (vertical direction) and are formed integrally.

[0027] The contact surface portion 46 and one side wall portion 47 are at a right angle, and the contact surface portion 46 and the other side wall portion 48 are also at a right angle. One side wall portion 47 has a screw hole 52 into which a screw 51 (see Figures 7 and 8) for fixing the rail cover 35 to the rail fitting 32 is screwed. In addition, one side wall portion 47 and the bearing portion 49 have a pair of press-fit grooves 53 into which a vertical cover 37, which will be described later, is fitted. A metal bush 34 is housed in the bearing portion 49, and the inner surface 54 of the bearing portion 49 and the outer surface 55 of the metal bush 34 are in contact. The metal bush 34 is gear-shaped, and a plurality of approximately triangular prism-shaped internal teeth 57 are continuously formed on the inner surface portion 56. A slide shaft portion 41 is inserted through the metal bush 34, and the slide shaft portion 41 is loosely fitted with the metal bush 34 with a minute gap, and the slide shaft portion 41 is in contact with the apex portion 58 of the internal teeth 57. As described later, the structure is designed so that rainwater and the like do not flow into the gap between the metal bush 34 and the slide shaft portion 41 from above. However, even if rainwater or the like does flow in for some reason, since the slide shaft portion 41 is in point contact with the apex portion 58 of the internal teeth 57, the rainwater and the like will flow downward due to gravity and be discharged from the gap between the metal bush 34 and the slide shaft portion 41. The metal bush 34 has a one-sided contact portion 59 at its open end that abuts against one-sided receiving portion 44 of the shaft fitting 31, and a other-sided contact portion 60 that abuts against the other-sided receiving portion 45 of the shaft fitting 31.

[0028] As shown in Figures 4 and 8, the shaft cover 33 is formed in a plate shape, and an elastic waterproof sheet 61 is attached to its lower surface. The waterproof sheet 61 adheres tightly to the rail cover 35, preventing rainwater and the like from flowing into the gap between the metal bush 34 and the slide shaft portion 41 from above. In this embodiment, the waterproof sheet 61 is made of chloroprene rubber, a synthetic resin, but it may be made of other materials as long as it adheres tightly to the rail cover 35 and can prevent the intrusion of rainwater and the like. The shaft cover 33 is fixed to the shaft fitting 31 by screws 62, which are screwed into screw holes 43.

[0029] As shown in Figures 4 and 7, the rail cover 35 is formed in a plate shape and covers the upper end portion of the rail fitting 32. The rail cover 35 has an opening 63 that, in plan view, resembles the shape of a keyhole-shaped burial mound, and even when the rail cover 35 is attached to the rail fitting 32, the slide shaft portion 41 and the connecting portion 42 can be inserted through the opening 63.

[0030] As shown in Figures 4 and 9, the fall prevention bracket 36 has a fall prevention plate portion 66 and a fixing plate portion 67 which is approximately perpendicular to the fall prevention plate portion 66. The fall prevention plate portion 66 has a bearing portion 49 of the rail fitting 32, a metal bush 34, and a fall prevention portion 68 that covers the lower side of the opening 63 of the rail cover 35. The fixing plate portion 67 has four screw insertion holes 70 through which screws 69 that fix the fall prevention bracket 36 to the contact surface portion 46 of the rail fitting 32 are inserted. The fixing plate portion 67 also has one bolt insertion hole 72 through which an anchor bolt 71, which is a fixing member that fixes the rail fitting 32 to the first frame M1, is inserted.

[0031] Here, the assembly procedure for the handrail mounting bracket 3 and the method of fixing it to the first handrail 1 will be explained. The first handrail 1 and the second handrail 2 are assembled in advance, and the first handrail 1 and the second handrail 2 are connected to each other so that they can slide against one another using the upper connector 11 and the lower connector 15. Then, the contact surface 38 of the shaft fitting 31 is brought into contact with the vertical frame 6 of the first handrail 1, and multiple screws 64 are passed through the contact surface 38 to fix the shaft fitting 31 to the vertical frame 6 (see Figures 6 and 7). Next, the metal bush 34 is housed in the bearing part 49, and the rail cover 35 is fixed to the upper end of the rail fitting 32 with screws 51 (see Figures 7 and 8). Also, the drop-stop bracket 36 is fixed to the lower end of the rail fitting 32 with screws 69 (see Figure 9). Next, the slide shaft part 41 of the shaft fitting 31 is inserted into the metal bush 34 through the opening 63 of the rail cover 33. Next, the fixing plate 27 is inserted into the pair of screw holes 22, and the restricting fitting 25 is inserted into the locking groove 24, and the restricting fitting 25 and the fixing plate 27 are connected with bolts 28 (see Figure 4). Next, the end cap 23 is fixed to the lower frame 5 with screws 20 (see Figure 4). Finally, the shaft cover 33 with the waterproof sheet 61 attached is fixed to the upper end of the shaft fitting 31 with multiple screws 62 (see Figure 8).

[0032] In this state, the first handrail 1, the shaft fitting 31, the rail fitting 32, the shaft cover 33, the metal bush 34, the rail cover 35, the fall prevention bracket 36, and the vertical cover 37 are integrated into one unit. The shaft unit having the shaft fitting 31 and the shaft cover 33 is fixed to the first handrail 1, and the rail unit having the rail fitting 32, the metal bush 34, the rail cover 35, and the fall prevention bracket 36 is movable vertically relative to the shaft unit between the shaft cover 33 and the restricting fitting 25. The rail unit is also able to rotate a predetermined amount horizontally relative to the shaft unit with the center P of the slide shaft portion 41 as the pivot point. When the rail unit is rotated a certain amount in one direction, the one-sided contact portion 59 of the metal bush 34 contacts the one-sided receiving portion 44 of the shaft fitting, preventing further rotation in that direction. Furthermore, when the rail unit is rotated by a certain amount in the other direction, the other contact portion 60 of the metal bush 34 comes into contact with the other receiving portion 45 of the shaft fitting, preventing it from rotating any further in the other direction.

[0033] Similarly, by attaching shaft units and rail units to the second handrail 2, the handrail unit is composed of the first handrail 1, the second handrail 2, two sets of shaft units, and two sets of rail units. The handrail unit is assembled at the assembly plant, shipped as a handrail unit, and can be transported to the construction site. At the construction site, the handrail unit is attached and fixed to the first frame M1 and the second frame M2 with multiple (nine in this embodiment) anchor bolts 71 (see Figure 2), and the vertical cover 37 (see Figure 6), which is a cover plate, is pressed into a pair of press-fit grooves 53 to complete the construction. In other words, at the construction site, the only tasks required are fixing the handrail unit to the first frame M1 and the second frame M2 with anchor bolts 71 and attaching the vertical cover 37 to the rail fittings 32, making the construction extremely simple.

[0034] As shown in Figure 10, the anchor bolts 71 are driven into the ground at a position that coincides with a first imaginary line L1 passing through the center of the width W1 direction of the first structural frame M1 in a plan view. Although not shown, the anchor bolts 71 driven into the second structural frame M2 are also driven into a position that coincides with an imaginary line passing through the center of the width direction of the second structural frame M2. Note that the center in the width W1 direction is not strictly the exact center, and a deviation of a few millimeters from the center is within the margin of error, and is considered the center in the width W1 direction. Furthermore, while it is preferable that the anchor bolts 71 are driven into a position that coincides with the first imaginary line L1 in a plan view, they may also be driven into a position that does not coincide with the first imaginary line L1.

[0035] Furthermore, as shown in Figure 10, the shaft fitting 31 is attached to the vertical frame 6 such that, in a plan view, the center P of the slide shaft portion 41 coincides with a second imaginary line L2 passing through the center in the width W2 direction of the first handrail 1. Although not shown, the shaft fitting 31 attached to the second handrail 2 is similarly attached to the vertical frame 6 such that the center P of the slide shaft portion 41 coincides with an imaginary line passing through the center in the width direction of the second handrail 2. Note that the center in the width W2 direction is not strictly the center, and a deviation of a few millimeters from the center is within the margin of error; it is considered the center in the width W2 direction. In addition, it is preferable that the shaft fitting 31 is attached to the vertical frame 6 such that, in a plan view, it coincides with the second imaginary line L2, but it may also be attached to the vertical frame 6 so as not to coincide with the second imaginary line L2.

[0036] As shown in Figure 2, in the completed state, the first handrail 1 and the second handrail 2, and the two sets of shaft units, are supported by rail units fixed to the first structure M1 and the second structure M2. Specifically, the shaft cover 33 abuts against the rail cover 35, thereby supporting the first handrail 1 and the second handrail 2 and the two sets of shaft units on the rail unit. Due to the weight of the first handrail 1 and the second handrail 2 and the two sets of shaft units, the waterproof cover 61 attached to the shaft cover 33 is in close contact with the upper surface of the rail cover 35.

[0037] As shown in Figure 2, in the completed state, the first handrail 1 and the second handrail 2, and the two shaft units, are movable upward until the restricting fitting 25 contacts the fall-stopping portion 68 of the fall-stopping bracket 36.

[0038] The handrail unit of this embodiment prevents the first handrail 1 and the second handrail 2 from being damaged, the connection between the first handrail 1 and the second handrail 2 from coming loose, and the first handrail 1 and the second handrail 2 from detaching from the first structure M1 and the second structure M2 when an earthquake occurs.

[0039] If the first structural frame M1 and the second structural frame M2 move upward due to an earthquake (vertical shaking), the first handrail 1 and the second handrail 2 and the two sets of shaft units move upward together with the first structural frame M1 and the second structural frame M2 and the two sets of rail units while being supported by the rail units, so the handrail units are less likely to be damaged. If the first structural frame M1 and the second structural frame M2 move downward due to an earthquake, as shown in Figure 11, the rail units move relative to the shaft units until the fall prevention brackets 36 come into contact with the restricting fittings 25, but as the shaft cover 33 and the rail cover 35 separate, the first handrail 1 and the second handrail 2 and the two sets of shaft units move downward due to their own weight. In other words, the first frame M1 and the second frame M2, along with the two sets of rail units, move downward first, followed slightly later by the first handrail 1 and the second handrail 2, along with the two sets of shaft units, thus making the handrail units less susceptible to damage. If the first frame M1 moves upward due to an earthquake, and the second frame M2 does not move or moves downward, the first handrail 1 and the second handrail 2, along with the two sets of shaft units, move upward while being supported by the rail unit fixed to the first frame M1. The shaft unit fixed to the second handrail 2 can move upward until the restricting fitting 25 contacts the fall-prevention bracket 36 of the shaft unit fixed to the second frame M2, thus making the handrail units less susceptible to damage. The same applies if the second frame M2 moves upward due to an earthquake, and the first frame M1 does not move or moves downward.

[0040] Next, we will explain the case where the first structural frame M1 and the second structural frame M2 move horizontally due to an earthquake (in the case of lateral shaking). When the first structural frame M1 and the second structural frame M2 move toward and away from each other, the first handrail 1 and the second handrail 2 slide while maintaining their connection by the upper connector 11 and the lower connector 15, so the handrail unit and the like are less likely to be damaged.

[0041] When the first structural frame M1 and the second structural frame M2 move in the same periodic manner towards the front and back sides in Figure 2, the first structural frame M1, the second structural frame M2, and the handrail unit move together in the same periodic manner, making the handrail unit and other components less susceptible to damage.

[0042] When the phase of the movement cycles of the first structure M1 and the second structure M2 are misaligned, such as when the first structure M1 moves towards the front in Figure 2 and the second structure M2 moves towards the back in Figure 2, the shaft fitting 31 can rotate with respect to the rail fitting 32 with the center P of the slide shaft portion 41 as the pivot point. As a result, as shown in Figure 12, the first handrail 1 and the second handrail 2 are tilted by a certain amount with respect to the first structure M1 and the second structure M2, making the handrail unit and the like less likely to be damaged.

[0043] As described above, the handrail mounting bracket 3 of this embodiment comprises a shaft unit attached to the first handrail 1 and the second handrail 2, and a rail unit attached to the first frame M1 and the second frame M2. The shaft unit and the rail unit are connected so as to be movable vertically and rotatable horizontally. The shaft unit has a shaft fitting 31 attached to the first handrail 1 and a shaft cover 33 that covers the upper end portion of the shaft fitting 31. The rail unit has a rail fitting 32 attached to the first frame M1 and a rail cover 35 that covers the upper end portion of the rail fitting 32. The rail cover 35 has an opening 63 through which the slide shaft portion 41 of the shaft fitting 31 is inserted, and the shaft cover 33 abuts against the rail cover 35 to close the upper side of the opening 63. Therefore, it is possible to prevent rainwater and the like from entering the opening 63 from above.

[0044] Furthermore, in this embodiment, the handrail mounting bracket 3 has a waterproof sheet 61 attached to the lower surface of the shaft cover 33, and the waterproof sheet 61 is in close contact with the rail cover 35. Therefore, it is possible to prevent rainwater from entering the gap between the metal bush 34 and the slide shaft portion 41 from above, and to prevent the metal bush 34 and the slide shaft portion 41 from freezing due to rainwater in cold weather.

[0045] Furthermore, in this embodiment, the handrail mounting bracket 3 has a substantially cylindrical slide shaft portion 41, and the rail unit has a metal bush 34 through which the slide shaft portion 41 is inserted. Multiple internal teeth 57 are formed on the inner surface portion 56 of the metal bush 34, and the slide shaft portion 41 is loosely fitted into the metal bush 34 so as to make point contact with the apex portions 58 of the internal teeth 57. As a result, the contact area between the metal bush 34 and the slide shaft portion 41 is reduced, the frictional resistance when the shaft fitting 31 and the rail fitting 32 rotate is reduced, and the rotational operation becomes smoother. In addition, even if rainwater or the like enters the gap between the metal bush 34 and the slide shaft portion 41, the rainwater or the like flows out through the gap between the internal teeth 57, so that the rainwater or the like can be discharged from between the metal bush 34 and the slide shaft portion 41.

[0046] Furthermore, the handrail unit of this embodiment includes a first handrail 1 and a second handrail 2 that are slidable relative to each other, and a handrail mounting bracket 3 for attaching the first handrail 1 to the first structure M1 and the second handrail 2 to the second structure M2. This allows the first handrail 1 and the second handrail 2 to be attached to the first structure M1 and the second structure M2 so as to be movable in the vertical direction and rotatable in the horizontal direction.

[0047] Furthermore, in this embodiment, the handrail unit is a unitized assembly of the first handrail 1, the second handrail 2, and the handrail mounting bracket 3. This allows the handrail unit, which comprises the first handrail 1, the second handrail 2, and the handrail mounting bracket 3, to be assembled at an assembly plant and transported to the construction site as a complete unit. As a result, installation work at the construction site becomes extremely easy.

[0048] Furthermore, the handrail mounting structure of this embodiment is a handrail mounting structure in which the first handrail 1 and the second handrail 2 are attached to the first frame M1 and the second frame M2 by handrail mounting brackets 3, and the rail unit is fixed to the first frame M1 and the second frame M2 by anchor bolts 71, and in a plan view, the anchor bolts 71 are positioned to coincide with a first imaginary line L1 that passes through the center in the width W1 direction of the first frame M1 and the second frame M2.Therefore, the anchor bolts 71 can be driven into the most stable position of the first frame M1 and the second frame M2.As a result, even if the surface of the first frame M1 and the second frame M2 is damaged due to an earthquake or the like, the anchor bolts 71 are less likely to fall off the first frame M1 and the second frame M2. In other words, the first handrail 1 and the second handrail 2 can be made less likely to detach from the first structure M1 and the second structure M2.

[0049] Furthermore, the handrail mounting structure of this embodiment is a handrail mounting structure in which the first handrail 1 and the second handrail 2 are attached to the first structure M1 and the second structure M2 by handrail mounting bracket 3, and in a plan view, the pivot point of the shaft unit is at a position that coincides with a second imaginary line L2 that passes through the center of the width W2 direction of the first handrail 1 and the second handrail 2. As a result, the load on the first handrail 1 (second handrail 2) on the slide shaft portion 41 and the connecting portion 42 is evenly distributed in the width W2 direction, and when the first handrail 1 (second handrail 2) and the shaft bracket 31 rotate, they rotate evenly to the left and right.

[0050] It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the gist of the invention. For example, the first handrail and the second handrail may have other shapes (designs) as long as they can be attached to the building structure using the handrail mounting bracket of the present invention. Also, the sliding structure between the first handrail and the second handrail may have other structures. [Explanation of Symbols]

[0051] 1. First handrail (handrail) 2. Second handrail (handrail) 3. Handrail mounting brackets 31 Shaft fittings 32 Rail fittings 33 Shaft Cover 34. Metal bushing (bearing body) 35 Rail Cover 41 Slide shaft section 56 Inner surface 57 Inner teeth 58 Vertex 61 Waterproof sheet 63 Opening 71 Anchor bolts (fixing members) L1 First virtual line L2 Second virtual line M1 First structural frame (structure) M2 Second structural frame (structure) W1 width W2 width

Claims

1. A shaft unit that can be attached to the handrail, It includes a rail unit that is attached to the structure, The shaft unit and the rail unit are connected so that they can move vertically and rotate horizontally relative to each other. The shaft unit comprises a shaft fitting to be attached to the handrail and a shaft cover that covers the upper end portion of the shaft fitting. The rail unit comprises a rail fitting attached to the frame and a rail cover covering the upper end portion of the rail fitting. The rail cover has an opening formed therein through which the slide shaft portion of the shaft fitting is inserted. A handrail mounting bracket characterized in that the shaft cover abuts against the rail cover and closes the upper side of the opening.

2. A waterproof sheet is attached to the lower surface of the shaft cover. The handrail mounting bracket according to claim 1, characterized in that the waterproof sheet is in close contact with the rail cover.

3. The aforementioned slide shaft portion is substantially cylindrical, The rail unit has a bearing body through which the slide shaft portion is inserted, The handrail mounting bracket according to claim 1, characterized in that a plurality of internal teeth are formed on the inner surface of the bearing body, and the slide shaft portion is loosely fitted to the bearing body so as to make point contact with the apex of the internal teeth.

4. A first handrail and a second handrail that are slidable toward each other, The system includes a handrail mounting bracket for attaching the first handrail to the first structure and the second handrail to the second structure, A handrail unit characterized in that the handrail mounting bracket is the handrail mounting bracket described in any one of claims 1 to 3.

5. The handrail unit according to claim 4, characterized in that the first handrail, the second handrail, and the handrail mounting bracket are integrated into a single unit.

6. A handrail mounting structure for attaching the handrail to the building structure using a handrail mounting bracket described in any one of claims 1 to 3, The rail unit is fixed to the structure by a fixing member. A handrail mounting structure characterized in that, in a plan view, the fixing member is positioned to coincide with a first imaginary line passing through the center in the width direction of the structure.

7. A handrail mounting structure for attaching the handrail to the building structure using a handrail mounting bracket described in any one of claims 1 to 3, A handrail mounting structure characterized in that, in a plan view, the pivot point of the shaft unit coincides with a second imaginary line passing through the center of the handrail in the width direction.

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