Handrail device

Abstract

To realize a handrail device having high load-bearing capacity.SOLUTION: In a handrail device D1 provided with a pipe-shaped handrail rod 2 and a bracket 1 for supporting and fixing the handrail rod 2 at its end part, the handrail rod 2 is provided with a plurality of screw holes 21 continued in the longitudinal direction on its inside, and a bracket body 1B of the bracket is provided with a facing part for receiving the end part of the handrail rod 2 and a boss part 12 erected on the facing part. The boss part 12 is fitted and inserted between the respective screw holes 21 inside the end part of the handrail rod 2, a plurality of groove part 12a respectively extending along the longitudinal direction of the handrail rod 2 are provided on the outer peripheral surface of the boss part 12, each screw hole 21 enters one groove part 12a different from each other among the plurality of groove part 12a, a screw insertion hole 11a penetrating the facing part 11 is provided at a position facing each groove part 12a in the facing part 11, and a fixing screw 3 is inserted into the screw insertion hole 11a of the facing part 11 and screwed into a screw hole 21 of the handrail rod 2.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a handrail device comprising a pipe-shaped handrail bar and a bracket attached to an end of the handrail bar to support and secure the handrail bar. [Background technology]

[0002] A handrail device that includes a pipe-shaped handrail bar and a bracket that is attached to the end of the handrail bar to support and secure the handrail bar has been widely known. A commonly used attachment method, for example, is to insert a part of one of the handrail bar and the bracket into the inside of the other member to fit them together, and then screw the overlapping part of both members together from the side (i.e., from a direction perpendicular to the longitudinal direction of the handrail bar) with a fixing screw.

[0003] This mounting method has the disadvantage that the heads of the fixing screws used for screw fastening are exposed to the outside, and there is a risk that the user's hands may touch the heads of the screws. For this reason, caps have sometimes been attached to the handrail device to hide the heads of the screws.

[0004] Instead of such an attachment method, a handrail device has been proposed that uses an attachment method in which a fixing screw is inserted through the bracket from the inner side to the outer side along the longitudinal direction of the handrail bar, and is screwed into a screw hole separately formed on the inside of the handrail bar (see, for example, Patent Document 1). In such a handrail device, the head of the fixing screw can be stored inside the bracket. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-155004 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in a handrail device like that in Patent Document 1, when a load is applied to the handrail rod, the load is concentrated on the bottom of the handrail rod support part through which the fixing screw is inserted, so high strength is required to prevent damage to the bottom of the handrail rod support part. Therefore, further ingenuity is required to realize a handrail device with high load resistance.

[0007] In view of the above circumstances, an object of the present invention is to provide a handrail device having a high load-bearing capacity. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the present invention provides the following handrail device.

[0009] [1] A handrail device comprising a pipe-shaped handrail rod and a bracket attached to the end of the handrail rod to support and fix the handrail rod, The handrail rod has a plurality of screw holes arranged continuously in the longitudinal direction on the inside thereof, The bracket includes an opposing portion that receives an end of the handrail bar and a boss portion that stands on the opposing portion, The boss portion is inserted between the screw holes on the inside of the end portion of the handrail rod, A plurality of grooves each extending along the longitudinal direction of the handrail bar are provided on the outer peripheral surface of the boss portion, Each of the screw holes is inserted into a different one of the plurality of grooves, a screw insertion hole penetrating the opposing portion is provided at a position facing each of the groove portions in the opposing portion, A handrail device characterized in that a fixing screw is inserted into the screw insertion hole of the opposing part and screwed into the screw hole of the handrail bar.

[0010] [2] The handrail rod has an outer peripheral surface whose cross section perpendicular to the longitudinal direction is non-circular, The handrail device described in [1] is characterized in that the handrail bar is attached to the opposing portion at different rotational positions centered on the boss portion by rotating the handrail bar in a circumferential direction to selectively change the groove portion into which the screw hole fits.

[0011] [3] The outer peripheral surface of the handrail bar has a curved surface that is curved outward in a cross section perpendicular to the longitudinal direction, and a flat surface that connects both ends of the curved surface in the circumferential direction, The handrail device described in [2] is characterized in that the handrail bar is attached to the opposing portion at a rotational position where the orientation of the flat surface is different by rotating the handrail bar in a circumferential direction and selectively changing the groove portion into which the screw hole fits.

[0012] [4] A handrail device as described in [3], characterized in that the two screw holes are provided in opposing positions via the boss portion on the inner surface corresponding to the curved surface of the handrail bar.

[0013] [5] A handrail device as described in [4], characterized in that one more screw hole is provided in a position opposite the boss portion on the inner surface corresponding to the flat surface of the handrail bar. Effect of the Invention

[0014] In the present invention, multiple screw holes fit into multiple grooves in the boss portion and the boss portion supports the screw holes, thereby preventing the load from being concentrated on the screw insertion holes through which the fixing screws are inserted or on the opposing portions, thereby making it possible to realize a handrail device with high load-bearing capacity. [Brief description of the drawings]

[0015] [Figure 1] 1 is an external perspective view of a handrail device according to a first embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of the handrail device of FIG. 1 taken along the longitudinal direction. [Diagram 3] 2 is a cross-sectional view of the handrail device of FIG. 1 near an end portion perpendicular to the longitudinal direction. [Figure 4]2 is a perspective view showing the vicinity of an end portion of the handrail device of FIG. 1, exploded into its constituent elements. FIG. [Diagram 5] 2 is a perspective view showing the vicinity of an end portion of the handrail device of FIG. 1, exploded into its constituent elements. FIG. [Figure 6] 1 is an external perspective view of a handrail device in a usage state in which the handrail bar extends in a horizontal direction perpendicular to the vertical direction. FIG. [Figure 7] 7 is a cross-sectional view of the handrail device of FIG. 6 near the end thereof, perpendicular to the direction in which the handrail bar extends. [Figure 8] 7 is a perspective view showing the vicinity of an end portion of the handrail device of FIG. 6, exploded into its constituent elements. FIG. [Figure 9] 11 is a cross-sectional view of the vicinity of an end portion of a handrail device according to a second embodiment of the present invention. FIG. [Figure 10] FIG. 11 is a cross-sectional view of the vicinity of an end portion of a handrail device according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be understood that the present invention is not limited to the following embodiment, and that appropriate design changes, improvements, etc. may be made based on the ordinary knowledge of a person skilled in the art without departing from the spirit of the present invention.

[0017] Fig. 1 is an external perspective view of a handrail device D1 according to a first embodiment of the present invention, Fig. 2 is a cross-sectional view of the handrail device D1 in Fig. 1 along the longitudinal direction, and Fig. 3 is a cross-sectional view of the handrail device D1 in Fig. 1 near its end perpendicular to the longitudinal direction. Fig. 4 and Fig. 5 are perspective views of the handrail device D1 in Fig. 1 near its end, disassembled into its components.

[0018] As shown in Fig. 1 and Fig. 2, the handrail device D1 of the first embodiment includes a bracket 1 and a handrail bar 2. The handrail bar 2 is a pipe-shaped member, and the following describes the handrail device D1 used in a mode in which the handrail bar 2 is placed vertically. The bracket 1 is attached to the end of the handrail bar 2 (see Fig. 5) and is a member that supports and fixes the handrail bar 2 (see Fig. 2). The bracket 1 is attached and fixed to a wall 5 by a fixing member 4. The handrail device D1 of this embodiment also includes a fixing screw 3 (see Figs. 2 and 5) for attaching and fixing the handrail bar 2 to the bracket 1. The following mainly describes the bracket 1 and the handrail bar 2.

[0019] First, the handrail rod 2 will be described. As described above, the handrail rod 2 is a pipe-shaped member, and has a number of screw holes 21 that are continuous in the longitudinal direction on the inside. The screw holes 21 are the parts of the handrail rod 2 into which the above-mentioned fixing screws 3 are screwed. As shown in Figs. 3 and 5, the handrail rod 2 has a hollow core material 22 that extends in one direction and opens at the end, and a covering material 23 that extends in one direction while surrounding the outer periphery of the core material 22, and the screw holes 21 are formed integrally with the core material 22 and stand upright from the inner surface of the core material 22. The hollow core material 22 is made of a material with high strength, and by forming the screw holes 21 integrally with such a core material 22, the load-bearing capacity of the handrail device D1 is further improved. In this embodiment, the core material 22 is made of metal, and the covering material 23 is made of synthetic resin. However, in the present invention, the entire handrail rod may be made of metal, or the entire handrail rod may be made of resin with high rigidity.

[0020] 3 and 5, the outer peripheral surface of the handrail bar 2, in a cross section perpendicular to the longitudinal direction, has a curved surface 2c that curves outward, and a flat surface 2b that connects both circumferential ends of the curved surface 2c. Two screw holes 21 are provided in positions that face each other via the boss portion 12 on the inner periphery of the core material 22 that corresponds to the curved surface 2c of the handrail bar 2. One screw hole 21 is provided in a position opposite the boss portion 12 on the inner periphery of the core material 22 that corresponds to the flat surface 2b of the handrail bar 2. This screw hole 21 is formed in the core material 22 via a rib.

[0021] Next, we will explain the configuration of the bracket 1. As shown in Fig. 4, the bracket 1 is composed of a bracket main body 1B and a bracket cover 1C, which are combined to form the bracket 1 having a box-like appearance as shown in Figs.

[0022] First, the bracket body 1B will be described. The bracket body 1B includes a base portion 14 fixed to a wall 5 by a fixing member 4 in FIG. 2, and a support portion 10 erected on the base portion 14. The support portion 10 is composed of two side portions 13 and an opposing portion 11, and the two side portions 13 extend in the upward direction in FIG. 5 from both ends of the base portion 14, and the opposing portion 11 extends in the upward direction in FIG. 5 integrally with the two side portions 13 from the remaining end of the base portion 14. Here, a boss portion 12 extending in the X direction in FIG. 5 is erected on the opposing portion 11. The opposing portion 11 and the boss portion 12 will be described in detail below, including their roles.

[0023] The facing part 11 is a part that receives the end of the handrail bar 2. In this embodiment, the facing part 11 has a plate shape and faces the end of the handrail bar 2 with the facing surface 11b (see FIG. 4) of the facing part 11 facing the opening 2a (see FIG. 5) at the end of the handrail bar 2. As shown in FIGS. 4 and 5, the facing part 11 is provided with a screw insertion hole 11a that penetrates from the facing surface 11b to the non-facing surface 11c (see FIG. 5). The above-mentioned fixing screw 3 is inserted into this screw insertion hole 11a. The fixing screw 3 is inserted from the non-facing surface 11c side opposite the facing surface 11b, and the inserted fixing screw 3 is screwed into the screw hole 21 of the handrail bar 2 as described above.

[0024] As described above, the boss portion 12 is a portion erected from the opposing surface 11b of the opposing portion 11 (see FIG. 4). The outer peripheral surface of the boss portion 12 is provided with a plurality of grooves 12a each extending along the longitudinal direction of the handrail bar 2. In this embodiment, four grooves 12a are provided at 90 degree intervals on the outer peripheral surface of the boss portion 12. Also, as shown in FIG. 4, the screw insertion holes 11a described above are provided at positions facing the grooves 12a in the opposing portion 11. As shown in FIG. 3, the boss portion 12 is inserted between the screw holes 21 on the inside of the end portion of the handrail bar 2. Each screw hole 21 of the handrail bar 2 described above fits into a different one of the plurality of grooves 12a.

[0025] Here, in this embodiment, there are a total of four screw insertion holes 11a, and three fixing screws 3 that pass through three of the screw insertion holes 11a are screwed into the three screw holes 21, respectively, so that the handrail rod 2 is attached to the bracket 1. Note that instead of the attachment method using the three fixing screws 3 and the three screw holes 21 in this way, an attachment method using two fixing screws and two screw holes 21 may be adopted. For example, when the fixing screws 3 are thin threaded parts, an attachment method using three fixing screws 3 and three screw holes 21 may be adopted, and when the fixing screws 3 are thick threaded parts, an attachment method using two fixing screws 3 and two screw holes 21 may be adopted.

[0026] Next, the bracket cover 1C will be described. The bracket cover 1C is a part of the exterior of the bracket, and is a member that hides the inside of the bracket body. The bracket cover 1C is attached to the bracket body 1B while covering the two side parts 13 of the bracket body 1B described above. During this attachment, the convex part formed on the lower part of the inner wall of the bracket cover 1C in FIG. 4 is engaged with the concave part formed on the lower part of the side part 13 of the bracket body 1B. The head part 31 of the fixing screw 3 located on the non-facing surface 11c of the facing part 11 is completely shielded from the outside by the bracket cover 1C. As a result, in this embodiment, the user's hand is prevented from touching the head part 31 of the fixing screw 3.

[0027] In this embodiment, the boss portion 12 supports the screw holes 21 by fitting the screw holes 21 into the grooves 12a of the boss portion 12. In addition to the fixing screws 3 inserted into the screw insertion holes 11a of the opposing portion 11 screwing into the screw holes 21, the boss portion 12 supports the screw holes 21 in this manner, improving the load-bearing capacity of the handrail device D1. In fact, when a load is applied to the handrail rod 2, the boss portion 12 and the screw holes 21 also bear the load of the load, preventing the load from concentrating on the screw insertion holes 11a through which the fixing screws 3 are inserted and on the opposing portion 11.

[0028] As described above, in this embodiment, a handrail device D1 with high load resistance is realized.

[0029] Here, in this embodiment, the handrail bar 2 has an outer peripheral surface whose cross section perpendicular to the longitudinal direction (see, for example, FIG. 3) is non-circular. Then, by rotating the handrail bar 2 in the circumferential direction and selectively changing the groove portion 12a into which the screw hole 21 fits, the handrail bar 2 is attached to the opposing portion 11 at different rotational positions around the boss portion 12. Note that the non-circular shape is not limited to the shape of this embodiment, and examples include an ellipse, an oval, and a rectangle.

[0030] According to this embodiment, the orientation of the outer peripheral surface of the handrail bar 2 can be changed as appropriate depending on the usage mode of the handrail device D1. Also, since the rotational position of the handrail bar 2 relative to the bracket main body 1B is selected from several rotational positions corresponding to discrete rotation angles, the positioning of the handrail bar 2 relative to the bracket main body 1B can be performed without uncertainty.

[0031] Specifically, the outer peripheral surface of the handrail rod 2 has a curved surface 2c that curves outward in a cross section perpendicular to the longitudinal direction, and a flat surface 2b that connects both circumferential ends of the curved surface 2c, as shown in Figures 3 and 5. Then, by rotating the handrail rod 2 in the circumferential direction and selectively changing the groove portion 12a into which the screw hole 21 fits, the handrail rod 2 is attached to the opposing portion 11 at a rotation position where the orientation of the flat surface 2b is different.

[0032] For example, when there are four grooves 12a at 90-degree intervals on the outer peripheral surface of the boss 12 as shown in Fig. 4, there are four ways to select the three grooves 12a into which the three screw holes 21 fit. Here, the rotational position of the handrail bar 2 with the direction of the boss 12 (X direction in Fig. 5) as the rotation axis direction is determined according to the three selected grooves 12a. In other words, there are four possible ways to attach the handrail bar 2, in which the orientation of the flat surface 2b differs by 90 degrees each. Fig. 5 shows a case where an attachment method in which the orientation of the flat surface 2b faces upward in Fig. 5 is selected from the four attachment methods.

[0033] 1 and 2, the handrail device D1 is attached to two brackets 1 arranged at two positions spaced apart in the vertical direction on the surface of a wall 5 (see FIG. 2). In this situation, by selecting a mounting method for the handrail rod 2 such that the flat surface 2b faces upward as shown in FIG. 5 as described above, the handrail device D1 is mounted on the wall 5 with the flat surface 2b facing away from the wall 5.

[0034] According to this configuration, the front side of the handrail rod 2 (the side opposite the wall 5) is a flat surface 2b, and the back side (the side facing the wall 5) is a curved surface 2c, so that when the user grasps the handrail rod 2, the palm of the handrail comes into contact with the flat surface 2b and the fingers come into contact with the curved surface 2c, resulting in a handrail device D1 that is easy for the user to grip.

[0035] Here, the flat surface 2b on the front side (opposite the wall 5) of the handrail bar 2, which is easily visible to the user, is at approximately the same height as the upper end of the bracket 1 (the upper end of the bracket 1 in the vertical direction of Figure 3), as shown in Figure 3.

[0036] As a result, from the outside, the flat surface 2b of the handrail bar 2 appears to be smoothly connected to the upper end of the bracket 1 located on its extension without any significant step, improving the aesthetic appearance of the handrail device D1.

[0037] 3 and 4, in this embodiment, the boss portion 12 has a cylindrical shape standing upright from the opposing surface 11b (see FIG. 4). The boss portion 12 has a plurality of ribs 15 standing upright from the opposing surface 11b on its inside and connecting two points on the inner circumferential surface of the boss portion 12.

[0038] The boss portion 12 is reinforced by the presence of the plurality of rib portions 15, and the load-bearing capacity of the handrail device D1 is further improved. Note that, in Fig. 3 and Fig. 4, two rib portions 15 are shown as an example of the plurality of rib portions 15.

[0039] In the above Figures 1 to 5, the use mode of the handrail device D1 has been described as being such that the handrail bar 2 is attached in a vertical direction (vertical placement), however, below, a description will be given of a case in which a different attachment method of the handrail bar 2 is used.

[0040] Fig. 6 is an external perspective view of the handrail device D1 in a usage state (horizontal placement) in which the handrail bar 2 extends in a horizontal direction perpendicular to the vertical direction, and Fig. 7 is a cross-sectional view of the vicinity of the end of the handrail device D1 in Fig. 6 perpendicular to the direction in which the handrail bar 2 extends. Also, Fig. 8 is a perspective view showing the vicinity of the end of the handrail device D1 in Fig. 6 exploded into its components.

[0041] As shown in Figure 6, the handrail bar 2 is attached to two brackets 1 arranged at two positions spaced apart horizontally perpendicular to the vertical direction on the surface of a wall 5, and extends horizontally between the two brackets 1.

[0042] In the horizontal use mode of Figures 6 to 8, the installation method is selected so that the flat surface 2b faces rightward as shown in Figures 7 and 8. As a result, the flat surface 2b of the handrail bar 2 faces vertically upward (toward the upper side of Figure 6) as shown in Figure 6.

[0043] When the handrail device D1 is used in such a horizontal position, the upper side (vertically upward side) of the handrail rod 2 is a flat surface 2b and the lower side (vertically downward side) is a curved surface 2c, so that when a user grasps the handrail rod 2 from above, the palm of the handrail rod 2 comes into contact with the flat surface 2b and the fingers come into contact with the curved surface 2c, resulting in a handrail device D1 that is easy for the user to grip.

[0044] In the above first embodiment, the handrail bar 2 can be attached to the bracket 1 in four different rotation positions, each with a different orientation of 90 degrees, as a degree of freedom in how the handrail bar 2 is attached to the bracket 1. Below, we will explain another embodiment of the handrail device of the present invention, in which the degree of freedom in how the handrail bar is attached to the bracket is less than that of the first embodiment.

[0045] In the handrail device D2 of the second embodiment, there are two ways to attach the handrail bar to the bracket. Fig. 9 is a cross-sectional view of the vicinity of the end portion of the handrail device D2 of the second embodiment of the present invention.

[0046] In FIG. 9, the same components as those in the first embodiment are given the same reference numerals, and the same components are referred to in the first embodiment, and the repeated description is omitted. The handrail rod 2 in the first embodiment has an outer peripheral shape in a cross section perpendicular to the longitudinal direction formed with line symmetry, while the handrail rod 2X in the second embodiment has an outer peripheral shape in a cross section perpendicular to the longitudinal direction formed with line symmetry and point symmetry. Specifically, the handrail rod 2X in the second embodiment has an outer peripheral surface and an inner peripheral surface whose cross section perpendicular to the longitudinal direction is rectangular. In addition, the handrail rod 2X has a pair of screw holes 21X on the short side of the inner circumference of the core material 22X. The boss portion 12X of the bracket 1X has groove portions 12m at positions corresponding to the pair of screw holes 21X, and the opposing portion 11 has screw insertion holes 11m at positions corresponding to each groove portion 12m. The boss portion 12X corresponds to the direction of the short side of the inner circumference of the core material 22X of the handrail rod 2X, and is loosely fitted inside the core material 22X. The handrail rod 2X can be attached to the bracket 1X even when rotated 180 degrees in the circumferential direction. The fixing screw 3 is screwed into the screw hole 21X through the screw insertion hole 11m of the opposing portion 11, thereby fixing the bracket 1X and the handrail rod 2X.

[0047] Next, a third embodiment of the present invention will be described. In the handrail device D3 of the third embodiment, there is only one way to attach the handrail bar to the bracket. Fig. 10 is a cross-sectional view of the vicinity of the end of the handrail device D3 of the third embodiment of the present invention.

[0048] In FIG. 10, the same components as those in the first embodiment are given the same reference numerals, and the same components are referred to in the first embodiment, and the repeated description is omitted. The handrail device D3 of the third embodiment differs from the handrail device D1 of the first embodiment in that the handrail device D3 has a fixed rotational position of the handrail rod 2Y relative to the bracket 1Y, and there is no freedom to selectively change the groove 12n into which the screw hole 21Y is inserted. Specifically, the outer peripheral surface of the boss portion 12Y is formed in a shape corresponding to the inner peripheral surface of the core material 22Y of the handrail rod 2Y. In addition, a pair of screw holes 21Y is provided in the core material 22Y of the handrail rod 2Y. The boss portion 12Y of the bracket 1Y has groove portions 12n at positions corresponding to the pair of screw holes 21Y, and the opposing portion 11 has screw insertion holes 11n at positions corresponding to each groove portion 12n. When the boss portion 12Y is loosely fitted into the core material 22Y, the groove portion 12n into which the screw hole 21Y fits is fixed, and the flat surface 2b of the handrail rod 2Y faces upward as shown in Fig. 10. The fixing screw 3 is screwed into the screw hole 21Y through the screw insertion hole 11n of the opposing portion 11, thereby fixing the bracket 1Y and the handrail rod 2Y.

[0049] The above is a description of the embodiment of the present invention.

[0050] The handrail in the above embodiment has an outer peripheral surface whose cross section perpendicular to the longitudinal direction is non-circular, but the present invention is not limited to this, and it is also possible to use a handrail having an outer peripheral surface that is a perfect circle.

[0051] In the above description of the embodiments, the direction in which the handrail bar extends was either vertical or horizontal, but in the present invention, the direction in which the handrail bar extends is not the essence of the invention, and the handrail bar may extend in another direction, for example, at an angle to the vertical direction.

[0052] In the above embodiment, two brackets are provided at both ends of one linearly extending handrail bar, and each bracket has one facing portion that receives the end of the handrail bar. However, the present invention may be a handrail device that supports and fixes multiple handrail bars while connecting them using three or more brackets. For example, the present invention can be applied to various handrail devices, such as an L-shaped handrail device in which two handrail bars and three brackets are assembled into an L shape, or a T-shaped handrail device in which three handrail bars and four brackets are assembled into an inverted T shape. In this case, the bracket provided at the connecting point is attached to the ends of two or more handrail bars as a whole, and accordingly has two or more facing portions 11 that receive the ends of the two or more handrail bars as a whole. [Industrial Applicability]

[0053] The present invention is useful for realizing a handrail device with high load resistance. [Explanation of symbols]

[0054] 1,1X,1Y: bracket, 1B: bracket body, 1C: bracket cover, 2,2X,2Y: Handrail, 2a: opening, 2b: flat surface, 2c: curved surface, 3: Fixing screw, 4: Fixing member, 5: Wall, 11: opposing part, 11a, 11m, 11n: screw insertion holes, 11b: Opposite surface, 11c: non-facing surface, 12, 12X, 12Y: boss part, 12a, 12m, 12n: groove, 13: Side, 14: Foundation part, 15: Rib part, 21, 21X, 21Y: Screw hole, 22, 22X, 22Y: Core material, 23: Covering material, 31:Head, D1, D2, D3: Handrail devices.

Claims

1. A handrail device including a pipe-shaped handrail rod and a bracket attached to an end of the handrail rod to support and fix the handrail rod, The handrail rod has a plurality of screw holes arranged continuously in the longitudinal direction on the inside thereof, The bracket includes an opposing portion that receives an end of the handrail bar and a boss portion that stands on the opposing portion, The boss portion is inserted between the screw holes on the inside of the end portion of the handrail rod, A plurality of grooves each extending along the longitudinal direction of the handrail bar are provided on the outer peripheral surface of the boss portion, Each of the screw holes is inserted into a different one of the plurality of grooves, a screw insertion hole penetrating the opposing portion is provided at a position facing each of the groove portions in the opposing portion, A handrail device characterized in that a fixing screw is inserted into the screw insertion hole of the opposing part and screwed into the screw hole of the handrail bar.

2. The handrail has an outer circumferential surface whose cross section perpendicular to the longitudinal direction is non-circular, The handrail device according to claim 1, characterized in that the handrail bar is attached to the opposing portion at different rotational positions centered on the boss portion by rotating the handrail bar in a circumferential direction to selectively change the groove portion into which the screw hole is inserted.

3. The outer peripheral surface of the handrail bar has a curved surface that is curved outward in a cross section perpendicular to the longitudinal direction, and a flat surface that connects both ends of the curved surface in the circumferential direction, The handrail device according to claim 2, characterized in that the handrail bar is attached to the opposing portion at a rotational position where the orientation of the flat surface is different by rotating the handrail bar in a circumferential direction and selectively changing the groove portion into which the screw hole is inserted.

4. The handrail device according to claim 3, characterized in that the two screw holes are provided at positions facing each other via the boss portion on an inner peripheral surface of the handrail bar that corresponds to the curved surface.

5. The handrail device according to claim 4, characterized in that an inner peripheral surface of the handrail bar corresponding to the flat surface is further provided with one of the screw holes at a position opposite to the boss portion.

Images