JP3555134B2

JP3555134B2 - Handrail mounting device

Info

Publication number: JP3555134B2
Application number: JP2000393327A
Authority: JP
Inventors: 貢小田
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-25
Filing date: 2000-12-25
Publication date: 2004-08-18
Anticipated expiration: 2020-12-25
Also published as: JP2002194867A

Description

【０００１】
【発明の属する技術分野】
本発明は、室内等の床面に手摺を固定するための手摺の取付装置に関する。
【０００２】
【発明が解決しようとする課題】
近年、高齢化に伴って一般の住宅において、階段や廊下の床面に手摺を取り付ける傾向にあるが、このような手摺の取付金具は種々知られているが、一般的に手摺を取り付ける床面に複数の取付金具を間隔をおいて固定し、この取付金具に手摺を固定するようしている。この種の手摺の取付金具１として例えば図４に示すように、取付金具Ａの内部に位置してナット部材Ｂを一体的に固定するとともに、取付金具Ａの先端部にはナット部材Ｂのネジ孔Ｂ１と連通する挿通孔Ｃを形成し、手摺Ｄに突設した螺子杆Ｄ１をネジ孔Ｂ１に螺着して手摺Ｄと取付金具Ａを一体的に固定した後、取付金具Ａを床面に固定することによって床面に手摺Ｄを固定している。
【０００３】
このような、手摺Ｄに形成する螺子杆Ｄ１を取付金具Ａのナット部材Ｂに螺着して手摺Ｄと取付金具Ａを固定する場合、ナット部材Ｂが取付金具Ａに一体化する構造では取付金具Ａに対する手摺Ｄの取付角度を調整することは不可能であった。このため、例えば、手摺Ｄの製作時あるいは作業又は運搬時において手摺Ｄの螺子杆Ｄ１に衝撃が加わるなどして手摺Ｄに形成する複数の螺子杆Ｄ１のうち、一部の螺子杆Ｄ１に曲げなどの変形が生じた場合、その螺子杆Ｄ１は、他の螺子杆Ｄ１と取付角度が狂ってしまい、手摺Ｄに取付金具Ａを固定した後、その取付金具Ａを床面に固定する際、取付金具Ａの固定が困難になる場合がある。特に、この種の手摺Ｄは体を支えるものであるから、構造的に堅牢で、また、床面に強固に固定する必要があるため、例えば、手摺Ｄを金属製材料によって中空状に形成し、その手摺Ｄに固定する螺子杆Ｄ１を溶接などによって一体的に固定されている。このような金属製材料からなる手摺Ｄに溶接によって螺子杆Ｄ１を溶接する構造においては、螺子杆Ｄ１を溶接する際、手摺Ｄに歪が生じ、このような溶接時の歪によって手摺Ｄに溶接した複数の螺子杆Ｄ１を全て角度が一致させることは技術的に困難であり、各螺子杆Ｄ１の取付角度にバラツキが生じやすいが、螺子杆Ｄ１を螺着するためのナット部材Ｄ１も取付金具Ａに溶接などにより一体化されているため、螺子杆Ｄ１の取付角度を調整するには、螺子杆Ｄ１を曲げるなどして修正する必要があり、極めて煩わしい手間と時間がかかり、手摺の取付作業が著しく低下するという問題があった。
【０００４】
本発明は、このような問題点を解決しようとするもので、ナット部材への螺子杆の取付角度を調整し得る手摺の取付装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１の発明の手摺の取付装置は、手摺と手摺の取付金具とからなる手摺の取付装置において、前記手摺の外周に間隔をおいて複数の取付部を突設し、この取付部先端に螺子杆を形成するとともに、前記取付金具内には前記螺子杆を螺着する表面側に曲面部を備えたナット部材と該ナット部材を遊動自在に保持する回り止め手段とからなる調整手段を設けることにより、取付部と取付金具との取付角度を調整し得るようにしたものである。
【０００６】
請求項１の構成により、溶接時の歪などによって取付金具に対する螺子杆の取付角度に狂いが生じた場合、ナット部材を上下あるいは左右方向に回動させることによって取付金具に対する螺子杆の取付角度を簡単に調整することができる。また、ナット部材に螺子部を螺着した際、ナット部材の曲面部が取付金具に確実に当接した状態で螺着でき、取付金具に対して手摺がガタ付くことなく十分な取付強度が得られる。
【０００７】
【０００８】
【０００９】
さらに、請求項２の発明は、請求項１記載の手摺の取付装置において、前記回り止め手段が前記ナット部材より僅かに径大でかつナット部材と係止可能な周壁部を有するものである。
【００１０】
請求項２の構成により、ナット部材は周壁部の内側において所定の範囲内で任意の方向に回動自在に保持し得る。また、ナット部材に螺子杆をねじ込む際、回り止め手段によってナット部材が確実に回り止めされてナット部材に螺子杆が確実に螺着される。
【００１１】
【発明の実施形態】
以下、本発明の実施例を添付図面を参照して説明する。図１ないし図３は本発明の一実施例を示し、同図において、１は中空筒状の手摺本体であり、ステンレスなどの金属製材料によって形成されている。手摺本体１は、複数に分割された手摺２,２を継ぎ合わせて１本の連続した手摺本体１を構成するものであり、隣接する一方の手摺２の端部に、手摺２より径小なパイプ状の継杆３が圧入され、これを隣接する他方の手摺２の内周面に嵌め入れることによって複数の手摺２,２を一体化している。また、前記手摺２には適宜間隔をおいて取付部として金属製の軸部４が溶接によって一体的に固定され、この軸部４の先端に螺子杆５を一体形成している。
【００１２】
前記手摺本体１を取付面としての床面Ｈに固定するための取付金具６は、手摺本体１と分割して構成されている。この取付金具６は、前記手摺本体１と同様、ステンレスなどの金属製材料によって中空筒状に形成されているが、先端が前面板７によって塞がれ、また、取付金具６の基部も平板状の取付板９によって密閉状に塞れている。なお、取付金具６の前面板７には、前記螺子杆５を通すための挿通孔８が形成されている。この挿通孔８は螺子杆５が遊挿するように螺子杆５の外形より径大に形成されている。
【００１３】
また、取付金具６の内部には、前記螺子杆５と螺着する四角形状のナット部材10と、このナット部材10を遊動自在に保持する回り止め手段11が設けられている。前記回り止め手段11は前記前面板７の裏面に溶接した矩形枠状の周壁部12と、この周壁部12の裏面開口部を覆う底壁部13とで構成されている。すなわち、前記ナット部材10は、前面板７と周壁部12及び底壁部13によって囲まれた密閉状の空間に配置されているが、前記周壁部12は、図２に示すように、前記ナット部材10の外形より僅かに径大に形成され、かつ、前記底壁部13と前面板７との間隔Ｓが前記ナット部材10の高さｈより広く形成されている。これにより、前記周壁部12内のナット部材10は、左右方向及び上下方向に遊動可能に組み込まれる。さらに、前記ナット部材10の表面には前記取付金具６の前面板７の裏面と当接する曲面部14が形成されており、前記手摺本体１の螺子杆５を前面板７に形成する挿通孔８から挿入してナット部材10に螺着すると、ナット部材10の曲面部14が前面板７の裏面に当接する。ここでナット部材10は前述したように、前面板７と周壁部12及び底壁部13によって囲まれた空間内において上下及び左右に遊動自在に保持されているため、ナット部材10の曲面部14が前面板７の裏面に沿って摺動し、ナット部材10に対する螺子杆５の取付角度、ひいては取付金具６に対する手摺本体１の取付姿勢を調整することが可能となる。すなわち、本実施例では、ナット部材10と、これを遊動自在に保持する周壁部12及びナット部材10の曲面部14により取付金具６に対する手摺本体１の取付姿勢を調整する調整手段15を構成している。
【００１４】
以上のように本実施例においては、手摺２を中空状に形成し、この手摺２に適宜間隔をおいて極めて細い軸部４を溶接し、その軸部４の先端部に取付金具６に組み込んだナット部材10に螺着する螺子杆５を形成するものであるが、軸部４は手摺２に対して極めて細く形成した中実状に形成されているので、これを溶接する場合、軸部４の溶接面積が少ないため、溶接時に手摺２の歪を極力、抑制することが可能である。すなわち、細い軸部４を手摺２に溶接するようにしているから、溶接時の歪による軸部４の取付誤差は少ない。さらに、たとえ、手摺２に溶接された軸部４の取付角度が狂って複数ある軸部４の一部の軸部４が他の軸部４と取付角度に誤差が生じたとしても、軸部４と螺着されるナット部材10が前面板７と周壁部12及び底壁部13によって囲まれた密閉状の空間に遊動自在に保持されているから、ナット部材10を上下あるいは左右方向に回動させることによって軸部４の取付角度の誤差を簡単に修正することができる。しかも、ナット部材10の表面には曲面部14が形成されているので、ナット部材10に軸部４の螺子杆５を螺着すると、ナット部材10の表面側に形成する曲面部14が取付金具６の前面板７に確実に当接した状態で螺着でき、取付金具６に対して手摺２がガタ付くことなく十分な取付強度が得られる。このため、手摺６を固定する際、軸部４の取付角度に狂いが生じても、軸部４を曲げるなどして手摺２に対する軸部４の取付角度を修正するといった煩わしい手間もかからず、取付金具６に対する前記螺子杆５の取付角度を簡単に調整することができる。これにより、床面Ｈへの手摺本体１の取付作業を極めて効率的に行うことができる。
【００１５】
また、本実施例においては、手摺本体１を複数の分割した手摺２によって構成し、さらに、手摺本体１と、これを固定するための取付金具６とを分割して構成することから、輸送時において手摺本体１をコンパクトに分解することができるため、運搬が容易であるとともに、輸送コストも削減することができる。また、こうして分解した手摺２は、一端部に圧入する径小な継杆３を隣接する手摺２の内周面に嵌め入れだけで極めて簡単に一体化することができ、手摺２の連結作業も極めて容易である。
【００１６】
以上、本発明の実施例を詳述したが、本発明は、前記実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、手摺の形状や構造あるいは手摺と取付金具との取付構造などは適宜選定すればよく、また、ナット部材の形状や、これを保持する回り止め手段の形状に適宜選定すればよい。さらに、前記実施例では、取付面として床面を例にして説明したが、壁面に固定するものを含むことは勿論である。
【００１７】
【発明の効果】
請求項１の発明によれば、手摺と手摺の取付金具とからなる手摺の取付装置において、前記手摺の外周に間隔をおいて複数の取付部を突設し、この取付部先端に螺子杆を形成するとともに、前記取付金具内には前記螺子杆を螺着する表面側に曲面部を備えたナット部材と該ナット部材を遊動自在に保持する回り止め手段とからなる調整手段を設けることにより、取付部と取付金具との取付角度を調整し得るようにしたものであるから、ナット部材を上下あるいは左右方向に回動させることによって取付金具に対する螺子杆の取付角度を簡単に調整することができる。また、ナット部材に螺子部を螺着した際、ナット部材の曲面部が取付金具に確実に当接した状態で螺着でき、取付金具に対して手摺がガタ付くことなく十分な取付強度が得られる。
【００１８】
【００１９】
さらに、請求項２の発明によれば、請求項１記載の手摺の取付装置において、前記回り止め手段が前記ナット部材より僅かに径大でかつナット部材と係止可能な周壁部を有するものであるから、ナット部材は周壁部の内側において所定の範囲内で任意の方向に回動自在に保持し得る。また、ナット部材に螺子杆をねじ込む際、回り止め手段によってナット部材が確実に回り止めされて螺子杆が螺着される。
【図面の簡単な説明】
【図１】本発明の一実施例を示す分解斜視図である。
【図２】同上手摺と取付金具との連結状態を示す拡大断面図である。
【図３】同上手摺の取付状態を示す断面図である。
【図４】従来例を示す断面図である。
【符号の説明】
１手摺本体
２手摺
４軸部（取付部）
５螺子杆
６取付金具
８挿通孔
10 ナット部材
11 回り止め手段
12 周壁部
14 曲面部
15 調整手段
Ｈ床面（取付面）[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a handrail mounting device for fixing a handrail to a floor surface such as a room.
[0002]
[Problems to be solved by the invention]
In recent years, with the aging, in general houses, there is a tendency to attach handrails to floors of stairs and corridors, and various fittings for attaching such handrails are known, but floors for attaching handrails are generally used. A plurality of mounting brackets are fixed at intervals, and a handrail is fixed to the mounting bracket. As shown in FIG. 4, for example, as shown in FIG. 4, a nut member B is integrally fixed with a nut member B as a mounting member 1 for a handrail of this type. An insertion hole C communicating with the hole B1 is formed, and a screw rod D1 protruding from the handrail D is screwed into the screw hole B1 to integrally fix the handrail D and the mounting bracket A. The handrail D is fixed to the floor surface.
[0003]
When such a screw rod D1 formed on the handrail D is screwed to the nut member B of the mounting bracket A to fix the handrail D and the mounting bracket A, mounting is performed in a structure in which the nut member B is integrated with the mounting bracket A. It was impossible to adjust the attachment angle of the handrail D to the bracket A. For this reason, for example, when manufacturing the handrail D, or when working or carrying the handrail D, an impact is applied to the screw rod D1 of the handrail D, and the handrail D is bent to a part of the plurality of screw rods D1 formed on the handrail D. When such a deformation occurs, the screw rod D1 is out of alignment with the other screw rods D1, and after fixing the mounting bracket A to the handrail D, when fixing the mounting bracket A to the floor surface, It may be difficult to fix the mounting bracket A. In particular, since this type of handrail D supports the body, it is necessary to be structurally robust and firmly fixed to the floor surface. For example, the handrail D is formed of a metal material so as to be hollow. The screw rod D1 fixed to the handrail D is integrally fixed by welding or the like. In the structure in which the screw rod D1 is welded to the handrail D made of such a metal material by welding, distortion occurs in the handrail D when the screw rod D1 is welded, and welding to the handrail D due to such distortion during welding. It is technically difficult to make the angles of all the plurality of screw rods D1 coincide with each other, and the mounting angle of each screw rod D1 tends to vary, but the nut member D1 for screwing the screw rod D1 is also attached to the mounting bracket. Since it is integrated with A by welding or the like, in order to adjust the mounting angle of the screw rod D1, it is necessary to correct the screw rod D1 by bending or the like. Is significantly reduced.
[0004]
An object of the present invention is to solve such a problem, and an object of the present invention is to provide a handrail mounting device capable of adjusting a mounting angle of a screw rod to a nut member.
[0005]
[Means for Solving the Problems]
A handrail mounting device according to a first aspect of the present invention is a handrail mounting device including a handrail and a handrail mounting bracket, wherein a plurality of mounting portions project from an outer periphery of the handrail at intervals, and a tip end of the mounting portion is provided. A screw rod is formed, and an adjusting means including a nut member having a curved surface portion on a surface side on which the screw rod is screwed and a detent means for movably holding the nut member is provided in the mounting bracket. Thereby, the mounting angle between the mounting portion and the mounting bracket can be adjusted.
[0006]
According to the configuration of claim 1, when the mounting angle of the screw rod with respect to the mounting bracket is deviated due to distortion at the time of welding or the like, the mounting angle of the screw rod with respect to the mounting bracket is adjusted by rotating the nut member vertically or horizontally. Can be easily adjusted. Also, when the screw portion is screwed to the nut member, the screw portion can be screwed in a state in which the curved surface portion of the nut member is securely in contact with the mounting bracket, and sufficient mounting strength is obtained without rattling of the handrail against the mounting bracket. Can be
[0007]
[0008]
[0009]
Further, the invention of claim 2 is the handrail mounting device according to claim 1 , wherein the detent means has a peripheral wall portion slightly larger in diameter than the nut member and capable of engaging with the nut member.
[0010]
According to the configuration of claim 2 , the nut member can be rotatably held in an arbitrary direction within a predetermined range inside the peripheral wall portion. Further, when the screw rod is screwed into the nut member, the nut member is securely prevented from rotating by the rotation preventing means, and the screw rod is securely screwed to the nut member.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIGS. 1 to 3 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes a hollow cylindrical handrail main body, which is formed of a metal material such as stainless steel. The handrail main body 1 is configured by joining a plurality of divided handrails 2 and 2 to form one continuous handrail main body 1, and has a smaller diameter than the handrail 2 at an end of one adjacent handrail 2. A plurality of handrails 2 are integrated by fitting a pipe-shaped connecting rod 3 into the inner peripheral surface of the adjacent handrail 2. A metal shaft 4 as an attachment portion is integrally fixed to the handrail 2 by welding at appropriate intervals, and a screw rod 5 is integrally formed at the tip of the shaft 4.
[0012]
A mounting bracket 6 for fixing the handrail main body 1 to a floor surface H as a mounting surface is configured separately from the handrail main body 1. Like the handrail body 1, the mounting bracket 6 is formed of a metal material such as stainless steel into a hollow cylindrical shape, but its front end is closed by a front plate 7, and the base of the mounting bracket 6 is also flat. Is hermetically closed by the mounting plate 9. In addition, an insertion hole 8 for passing the screw rod 5 is formed in the front plate 7 of the mounting bracket 6. The insertion hole 8 is formed to be larger in diameter than the outer shape of the screw rod 5 so that the screw rod 5 is loosely inserted.
[0013]
A square nut member 10 screwed to the screw rod 5 and a detent means 11 for holding the nut member 10 movably are provided inside the mounting bracket 6. The detent means 11 is composed of a rectangular frame-shaped peripheral wall portion 12 welded to the back surface of the front plate 7 and a bottom wall portion 13 which covers the opening on the back surface of the peripheral wall portion 12. That is, the nut member 10 is disposed in a closed space surrounded by the front plate 7, the peripheral wall portion 12, and the bottom wall portion 13, and the peripheral wall portion 12, as shown in FIG. The diameter of the nut 10 is slightly larger than the outer shape of the member 10, and the distance S between the bottom wall 13 and the front plate 7 is wider than the height h of the nut member 10. Thereby, the nut member 10 in the peripheral wall portion 12 is incorporated so as to be movable in the left-right direction and the up-down direction. Further, a curved surface portion 14 is formed on the front surface of the nut member 10 to be in contact with the back surface of the front plate 7 of the mounting bracket 6, and an insertion hole 8 for forming the screw rod 5 of the handrail body 1 in the front plate 7 is formed. And screwed into the nut member 10, the curved surface portion 14 of the nut member 10 comes into contact with the back surface of the front plate 7. Here nut member 10 as described above, because the that are floating freely held vertically and horizontally within surrounded by the front plate 7 and the peripheral wall portion 12 and the bottom wall portion 13 space, the curved surface portion of the nut member 10 14 slides along the back surface of the front plate 7, so that the mounting angle of the screw rod 5 with respect to the nut member 10 and, consequently, the mounting posture of the handrail body 1 with respect to the mounting bracket 6 can be adjusted. That is, in the present embodiment, the nut member 10, the peripheral wall portion 12 that freely holds the nut member 10 and the curved surface portion 14 of the nut member 10 constitute the adjusting means 15 that adjusts the mounting posture of the handrail body 1 with respect to the mounting bracket 6. ing.
[0014]
As described above, in the present embodiment, the handrail 2 is formed in a hollow shape, an extremely thin shaft portion 4 is welded to the handrail 2 at an appropriate interval, and the tip end of the shaft portion 4 is incorporated into the mounting bracket 6. The screw 4 is screwed to the nut member 10. The shaft 4 is formed so as to be extremely thin and solid with respect to the handrail 2. , The distortion of the handrail 2 during welding can be suppressed as much as possible. That is, since the thin shaft portion 4 is welded to the handrail 2, the mounting error of the shaft portion 4 due to distortion during welding is small. Furthermore, even if the mounting angle of the shaft portion 4 welded to the handrail 2 is incorrect and a part of the plurality of shaft portions 4 has an error in the mounting angle with the other shaft portions 4, even if the mounting angle of the plurality of shaft portions 4 is in error. Since the nut member 10 to be screwed with the nut 4 is movably held in a sealed space surrounded by the front plate 7, the peripheral wall portion 12, and the bottom wall portion 13, the nut member 10 is turned up and down or left and right. By moving the shaft portion 4, the error of the mounting angle of the shaft portion 4 can be easily corrected. Moreover, since the curved surface portion 14 is formed on the surface of the nut member 10, when the screw rod 5 of the shaft portion 4 is screwed onto the nut member 10 , the curved surface portion 14 formed on the surface side of the nut member 10 is attached to the mounting bracket. The handrail 2 can be screwed in a state in which the handrail 2 is securely in contact with the front plate 7 of the mounting member 6, and sufficient mounting strength can be obtained without rattling of the handrail 2 with respect to the mounting bracket 6. For this reason, when fixing the handrail 6, even if the mounting angle of the shaft part 4 is misaligned, the troublesome work of correcting the mounting angle of the shaft part 4 with respect to the handrail 2 by bending the shaft part 4 is not required. In addition, the mounting angle of the screw rod 5 with respect to the mounting bracket 6 can be easily adjusted. Thereby, the work of attaching the handrail body 1 to the floor surface H can be performed extremely efficiently.
[0015]
Further, in this embodiment, the handrail body 1 is constituted by a plurality of divided handrails 2, and the handrail body 1 and the mounting bracket 6 for fixing the handrail body 1 are separately constituted. Since the handrail main body 1 can be disassembled in a compact manner, the transportation is easy and the transportation cost can be reduced. In addition, the handrail 2 disassembled in this manner can be integrated very easily simply by fitting a small-diameter connecting rod 3 press-fitted into one end into the inner peripheral surface of the adjacent handrail 2, and the connecting work of the handrail 2 can be performed. Extremely easy.
[0016]
As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the shape and structure of the handrail or the attachment structure between the handrail and the mounting bracket may be appropriately selected, and the shape of the nut member and the shape of the detent means for holding the nut member may be appropriately selected. Further, in the above-described embodiment, the floor surface has been described as an example of the mounting surface, but it is needless to say that the mounting surface includes a fixing surface.
[0017]
【The invention's effect】
According to the first aspect of the present invention, in a handrail mounting device including a handrail and a handrail mounting bracket, a plurality of mounting portions are protruded at intervals on an outer periphery of the handrail, and a screw rod is attached to a tip of the mounting portion. While being formed, by providing adjusting means including a nut member having a curved surface portion on a surface side on which the screw rod is screwed and a detent means for holding the nut member movably in the mounting bracket, Since the mounting angle between the mounting portion and the mounting bracket can be adjusted, the mounting angle of the screw rod with respect to the mounting bracket can be easily adjusted by rotating the nut member vertically or horizontally. . Also, when the screw portion is screwed to the nut member, the screw portion can be screwed in a state in which the curved surface portion of the nut member is securely in contact with the mounting bracket, and sufficient mounting strength is obtained without rattling of the handrail against the mounting bracket. Can be
[0018]
[0019]
According to a second aspect of the present invention, in the handrail mounting device according to the first aspect , the detent means has a peripheral wall portion slightly larger in diameter than the nut member and capable of engaging with the nut member. Therefore, the nut member can be rotatably held in an arbitrary direction within a predetermined range inside the peripheral wall portion. When the screw rod is screwed into the nut member, the nut member is securely prevented from rotating by the rotation preventing means, and the screw rod is screwed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing one embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view showing a connection state between the handrail and a mounting bracket.
FIG. 3 is a sectional view showing an attached state of the handrail.
FIG. 4 is a sectional view showing a conventional example.
[Explanation of symbols]
1 Handrail body 2 Handrail 4 Shaft (mounting part)
5 screw rod 6 mounting bracket 8 insertion hole
10 Nut member
11 Detent means
12 Perimeter wall
14 Curved surface
15 Adjusting means H Floor surface (mounting surface)

Claims

In a handrail mounting device comprising a handrail and a handrail mounting bracket, a plurality of mounting portions project from an outer periphery of the handrail at intervals, and a screw rod is formed at the tip of the mounting portion, and the mounting bracket is provided inside the mounting bracket. Is provided with an adjusting means comprising a nut member having a curved surface portion on the surface side on which the screw rod is screwed, and a detent means for holding the nut member movably, so that the mounting angle between the mounting portion and the mounting bracket is provided. A handrail mounting device that can be adjusted.

2. The handrail mounting device according to claim 1, wherein the rotation preventing means has a peripheral wall portion slightly larger in diameter than the nut member and capable of engaging with the nut member.