JP7263504B2 - Handrails and how to install them - Google Patents

Description

TECHNICAL FIELD The present invention relates to a handrail installed on a wall surface or a floor surface of a toilet, a bathroom, an entrance, etc., and a method of attaching the handrail.

2. Description of the Related Art Conventionally, as handrails provided in toilets, bathrooms, etc., handrail rods are widely known to be installed on a wall surface or a floor surface (hereinafter referred to as "mounting surface") with brackets. For example, in the handrail described in Patent Document 1, the peripheral wall at the end of the handrail bar (handrail rod) is provided with a through-hole into which a fixing screw is inserted and a hole-shaped engagement recess penetrating in the thickness direction. A main body (bush portion) of the bush (bracket) is provided with a threaded hole into which a fixing screw is screwed and an engaging projection that fits into the engaging recess (see FIG. 2 in particular).

According to the handrail described in Patent Document 1, the main body portion of the bush is inserted into the end portion of the handrail bar, and the engagement projection as an engagement mechanism is fitted into the engagement recess, thereby fixing the handrail bar and the bush with a fixing screw. Temporary assembly can be performed before fixing.

JP 2009-180047 A

In the handrail described in Patent Document 1, in addition to the through hole and the screw hole, the engaging recess and the engaging projection are provided as the engaging mechanism. The ends of the bar are too long.
In addition, the handrail described in Patent Document 1 needs to be drilled at a precise position for the engagement recess for the engagement protrusion to be fitted in, so the work is time-consuming and the end of the handrail bar is penetrated. Since two holes, ie, the hole and the engaging recess, are formed, the appearance becomes unattractive. Furthermore, since the leaf spring member having the convex portion is detachably attached to the outer peripheral surface of the bush as the engaging projection, there is a problem that the cost increases.

Further, in the engagement mechanism of the handrail disclosed in Patent Document 1, as the fixing screw is screwed into the screw hole, the depth of engagement of the engaging projection with respect to the engaging recess increases, so that the screwing of the fixing screw increases. In the temporary assembled state without the handrail bar, the force restricting the movement of the handrail bar in the pull-out direction is weak.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to facilitate temporary assembly of a handrail rod and a bracket, to firmly maintain an appropriate temporary assembly state, and to improve workability. To provide a handrail and its mounting method.

In order to achieve the above object, the first feature of the present invention is to provide a handrail rod made of a metal tube covered with a covering material, and a handrail rod fixed to the handrail rod with a screw and attached to a mounting surface by a fixing means. A base portion of the bracket fixed to the mounting surface is provided with a recess into which an end of the handrail rod is fitted, and the metal pipe is inserted into the recess. A bush portion that is inserted into the bracket protrudes from the bottom surface, and a plurality of ribs extending along the protrusion direction are provided on the outer peripheral surface of the bush portion at predetermined intervals in the circumferential direction, and the bracket is , at least the bush portion is formed of a synthetic resin softer than the metal pipe, and an imaginary outer circumference circle passing through the apexes of the ribs in the bush portion is manufactured to be equal to or larger than the inner circumference of the metal pipe , The handrail rod and the bracket are in the state of a handrail temporary assembly in which the bush portion is inserted into the metal pipe of the handrail rod and the handrail rod and the bracket are combined without being fixed with screws, and the base portion of the bracket is attached as described above. The bracket is formed so that it can be brought into contact with a desired position on the surface, a mark for the fixing position of the base portion is marked on the mounting surface, and the handrail temporary assembly can be separated from the mounting surface. is provided with an insertion hole extending from the tip of the base portion to the back surface of the base portion, and four indicator portions are provided on the outer peripheral portion of the base portion to serve as indicators when marking the fixing position of the base portion on the mounting surface. and, on the mounting surface, a piercing position for piercing the insertion hole for the fixing means is specified by an intersection of two lines connecting marks attached at positions corresponding to the indicator portions, and the indicator portion is: Two locations are provided on each of two imaginary lines passing through the center of the bush portion on the outer peripheral portion of the base portion, and the fixing means includes an insertion hole drilled at a drilling position of the mounting surface and the insertion hole of the bracket. and fixing the bracket to the mounting surface while being inserted into the mounting surface .

According to the first feature, when the bush portion of the bracket is inserted into the metal pipe, the bush portion is inserted into the metal pipe while the top of the rib is shaved. Due to the frictional force with the peripheral surface, the temporary assembled state of the bracket can be firmly maintained without shaking. Moreover, since there is no need to provide an engagement mechanism unlike the conventional one, provisional assembly can be realized with a simple structure, and the appearance is not spoiled.
Further, by attaching a mark to the position of the index portion, aligning the index portion of the base portion with the mark, and attaching the bracket to the mounting surface, the bracket can be attached to an appropriate position.
Also, mark four points on the mounting surface at the position of the indicator portion, and draw two lines connecting the two marks facing each other. Since the intersection of these two lines is the position of the insertion hole of the fixing means for fixing the bracket, the position of the insertion hole can be easily specified and the insertion hole can be drilled at an appropriate position.

A second feature of the present invention is that the handrail rod includes a main body serving as a handle portion, curved portions curved at right angles from both ends of the main body toward the mounting surface, and and the end extending toward the mounting surface .
A third feature of the present invention is that the cross-sectional shape of the end of the handrail rod and the cross-sectional shape of the recess are formed in a non-perfect circle.

According to the third feature, the handrail rod is positioned in the bracket by fitting the end of the handrail rod into the concave portion of the bracket, and the through hole provided in the handrail rod and the screw provided in the bracket are engaged. The hole positions can be easily matched. In addition, since the circumferential movement of the handrail rod is restricted by fitting the end of the handrail rod into the concave portion, the position of the through hole and the threaded hole are not shifted in the circumferential direction.

A fourth feature of the present invention is that the bottom surface of the recess is provided with a groove around the bush, and the rib extends from the groove along the outer peripheral surface of the bush along the projecting direction. characterized by

According to the fourth feature, when inserting the bush portion into the metal pipe, shavings of the rib are generated, but the shavings of the rib can be accommodated in the groove. As a result, shavings of the rib are caught between the end face of the handrail rod end and the bottom surface of the recess, and when the handrail is attached to the mounting surface, the handrail rod rattles, or the through hole of the handrail rod and the through hole. It is possible to prevent troubles such as failure to fix with screws due to misalignment of screw engagement holes of the bracket.

A fifth feature of the present invention is the handrail mounting method of the first feature, wherein the bush portion of the bracket is inserted into the metal tube of the handrail rod, and the handrail rod and the bracket are fixed with screws. a temporary assembling step of assembling a handrail temporary assembly that is combined without the handrail temporary assembly; a marking step of separating the handrail temporary assembly from the mounting surface; a boring step of boring an insertion hole used for the fixing means in the mounting surface based on the mark marked in the marking step; a disassembling step of disassembling the temporary handrail assembly used in the attaching step into a handrail rod and a bracket; aligning the base portion of the bracket disassembled in the disassembling step with the mark; a step of fixing the bracket, inserting the metal tube of the handrail rod disassembled in the disassembling step into the bush portion of the bracket fixed to the mounting surface in the step of fixing the bracket, and fixing the handrail rod and the bracket with screws. and a handrail rod fixing step.

According to the fifth feature, by marking the fixed position of the bracket in a state in which the handrail rod and the bracket are temporarily assembled, the appropriate position for actually attaching the handrail to the mounting surface can be marked.

According to a sixth feature of the present invention, in the handrail mounting method , in the marking step, a mark is attached to a position corresponding to the indicator portion on the mounting surface, and in the bracket fixing step, the indicator portion of the bracket is marked. It is characterized by matching with the mark.

According to the sixth feature, the bracket can be attached to an appropriate position by marking the position corresponding to the indicator on the mounting surface and aligning the indicator of the bracket with this mark.

According to a seventh feature of the present invention, in the above handrail mounting method, in the marking step, a mark is attached to a position corresponding to each of the indicator portions on the mounting surface, and in the perforating step, the mark is marked in the marking step. Draw two lines connecting the marked marks, set the intersection of the two lines as the perforation position, and align the index portions of the bracket with the four marks in the bracket fixing step. .

According to the seventh feature, the position of the insertion hole can be easily specified and the insertion hole can be drilled at an appropriate position.

ADVANTAGE OF THE INVENTION According to the present invention, a handrail and a handrail that can easily perform temporary assembly of a handrail rod and a bracket, can firmly maintain an appropriate temporary assembly state, and can improve workability. It is to provide a mounting method thereof.

1 is a partially cross-sectional plan view showing an attached state of a handrail, which is an example of an embodiment of a handrail according to the present invention; FIG. It is a front view of the handrail rod in this embodiment. It is a perspective view of the bracket in this embodiment. It is a top view of the bracket in this embodiment. FIG. 2 is a partially enlarged sectional view of FIG. 1; It is a process perspective view which shows the assembly process in this embodiment. It is a process perspective view which shows the state which stuck the base part to the wall surface in the marking process in this embodiment. FIG. 4 is a process perspective view showing a state in which a mark is drawn on a wall surface in a marking process in the present embodiment; It is a process perspective view which shows the punching process in this embodiment. It is a process perspective view which shows the handrail rod fixing process in this embodiment. FIG. 5 is a perspective view showing a handrail rod and a bracket in a modification of the handrail according to the present invention;

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the handrail which concerns on this invention is demonstrated in detail with reference to drawings.
As shown in FIG. 1, the handrail 1 of this embodiment is attached to a wall surface W, and includes a handrail rod 10 and a bracket 30 for supporting and fixing the handrail rod 10 . As shown in FIGS. 1 and 5, the handrail rod 10 of the present embodiment includes a main body portion 13 which is a handle portion and a curved portion 14 which is curved at right angles from both ends of the main body portion 13 toward the wall surface W. and an end portion 15 cylindrically extending from the tip of the curved portion 14 toward the wall surface W, and the end portion 15 is fixed to the bracket 30 .

As shown in FIG. 2, the handrail rod 10 is formed by covering the surface of a metal pipe 11 made of stainless steel, aluminum, iron or the like with a synthetic resin cover 12 . In addition, the covering 12 may be a single layer or a plurality of layers. In the handrail rod 10 of this embodiment, the cross section of the metal tube 11 is a perfect circle, and the cross section of the cover 12 is an ellipse.

An end portion 15 of the handrail rod 10 is provided with a through hole 16 penetrating in the thickness direction. In this embodiment, two through holes 16 are provided facing each other in the minor axis direction of the elliptical handrail rod 10 . The through hole 16 is a stepped hole formed by counter boring.

As shown in FIG. 3, the bracket 30 includes a base portion 31 fixed to the wall surface W, a recess portion 32 into which the end portion 15 of the handrail rod 10 is fitted, and a bush portion 33 into which the metal tube 11 is fitted. ing. In this embodiment, the bracket 30 is integrally molded from a synthetic resin such as ABS resin or POM resin, but at least the bush portion 33 may be formed from a synthetic resin softer than the metal pipe 11 . Further, the base portion 31 and the recessed portion 32 may be formed of a synthetic resin different from that of the bush portion 33, or may be formed of metal.

As shown in FIG. 4, the base portion 31 has an elliptical shape in plan view. An outer peripheral portion of the base portion 31 is provided with a concave index portion 34 that serves as an index when marking the fixing position of the base portion 31 on the wall surface W. As shown in FIG.
The index portions 34 are provided at two locations on each of two imaginary lines V1 and V2 passing through the center C of the bush portion 33 on the outer peripheral portion of the base portion 31 . In the present embodiment, the long axis of the elliptical base portion 31 coincides with the imaginary line V1, and the short axis thereof coincides with the imaginary line V2. , on the short axis (virtual line V2).

The surface of the base portion 31 is provided with a concave portion 32 into which the end portion 15 of the handrail rod 10 is fitted. As shown in FIG. 4 , the cross-sectional shape (planar view shape) of the recess 32 is the same elliptical cross-sectional shape as the end portion 15 of the handrail rod 10 . The interior of the recess 32 is slightly larger than the outer shape of the end 15 so that the end 15 of the handrail rod 10 can be fitted therein.

A cylindrical bush portion 33 protrudes from the center of the bottom surface 35 of the recess 32 . The bushing portion 33 has a cylindrical portion 36 protruding from the bottom surface 35 of the recess 32 and a truncated conical portion 37 whose diameter decreases from the cylindrical portion 36 toward the tip. Since the truncated conical portion 37 can be inserted up to the curved portion 14 of the metal tube 11, the cylindrical portion 36 of the bush portion 33 and the end portion 15 of the handrail rod 10 can be shortened. Further, the bush portion 33 is provided with an insertion hole 39 into which a fixing means 38 such as a bolt is inserted coaxially from the tip to the rear surface of the base portion 31 .

The bush portion 33 is provided with two threaded holes 40 at symmetrical positions with respect to the axis. A screw 41 for fixing the bracket 10 and the handrail rod 30 is screwed into the threaded hole 40. When the end portion 15 of the handrail rod 10 and the recess 32 are fitted together, the handrail rod 10 penetrates. It is formed at a position matching the hole 16 .

Four ribs 42 extending along the projecting direction are provided on the outer peripheral surface of the bush portion 33 at equal intervals in the circumferential direction. A groove portion 43 is provided around the bush portion 33 on the bottom surface 35 of the recess portion 32 . Further, each rib 42 is provided so as to extend from the groove portion 43 on the outer peripheral surface of the bush portion 33 along the projecting direction. In this embodiment, each rib 42 is provided from the proximal end of the bushing portion 33 to the distal end of the columnar portion 36, and the distal end portion of each rib 42 is inclined such that the height of the rib 42 decreases toward the distal end. It has a surface 45 .

The bush portion 33 is manufactured so that the maximum outer diameter D1 (see FIG. 4) of the columnar portion 36 where the ribs 42 are not provided is smaller than the inner diameter D3 (see FIG. 2) of the metal tube 11 of the handrail rod 10 . Further, the bush portion 33 has a diameter D2 (see FIG. 4) of an imaginary outer peripheral circle V3 passing through the vertices of the plurality of ribs 42 and is equal to or larger than the inner diameter D3 (see FIG. 2) of the metal tube 11, and It is made smaller than the outer diameter D4.
The diameter D2 of the imaginary outer circumference circle V3 is set to a size that allows the bushing portion 33 to be inserted into the metal pipe 11 while the metal pipe 11 scrapes the top portion 44 of the rib when inserting the bushing portion 33 into the metal pipe 11. be. Further, the groove portion 43 is set to have a size capable of accommodating shavings from which the top portion 44 of the rib 42 is scraped off.

Next, a method for attaching the handrail 1 to the wall surface W will be described. Hereinafter, since the mounting work of the bracket 30 is the same for the one end 15 and the other end 15 of the handrail rod 10, the description of overlapping work will be omitted.

<Temporary assembly process>
A "temporary assembly process" for assembling the handrail temporary assembly 2 in which the handrail rod 10 and the bracket 30 are combined without being fixed with screws will be described. First, the bush portion 33 of the bracket 30 is inserted into the metal pipe 11 of the handrail rod 10 (Fig. 6). At this time, when the body portion 36 of the bush portion 33 provided with the ribs 42 is pushed into the metal pipe 11, the body portion 36 of the bush portion 33 is inserted into the metal pipe 11 while the top portions 44 of the ribs 42 are shaved. . Then, the bush portion 33 is pushed further to fit the end portion 15 of the handrail rod 10 into the concave portion 32 of the bracket 30 . At this time, since the cross-sectional shape of the recessed portion 32 and the cross-sectional shape of the end portion 15 of the handrail rod 10 are both the same elliptical shape, the end portion 15 of the handrail rod 10 is positioned in the recessed portion 32 when they are aligned in the same circumferential direction. fit inside. Shavings from which the apex 44 of the rib 42 is scraped off are accommodated in a groove 46 provided in the bottom surface 35 of the recess 32, and the end surface of the end 15 of the handrail rod 10 and the bottom surface 35 of the recess 32 are brought into contact. Then, it is confirmed that the positions of the through hole 16 of the handrail rod 10 and the threaded hole 40 of the bush portion 33 match.
The handrail rod 10 and the bracket 30 may be temporarily assembled at a factory or the like and shipped as the handrail temporary assembly 2, or the handrail rod 10 and the bracket 30 may be shipped separately and the handrail may be assembled at the installation site or the like. The temporary assembly 2 may be assembled.

<Marking process>
Next, a “marking process” for marking the fixing position of the base portion 31 on the wall surface W will be described. The handrail temporary assembly 2 assembled in the temporary assembly process is held, and the back surface of the base portion 31 is brought into contact with the wall surface W at the desired position (Fig. 7). In this state, a mark M is made on the wall surface W at a position corresponding to the index portion 34 with a writing instrument or a ruled writing instrument (FIG. 8). Marking is performed for all the indicator portions 34 . Then, the handrail temporary assembly 2 is separated from the wall surface W.

<Drilling process>
Next, the "drilling process" for drilling the insertion hole H in the wall surface W based on the mark M will be described. Of the four marks M marked in the marking process, two lines L1 and L2 connecting the marks M facing each other are drawn. The intersection point P of these two lines L1 and L2 is the punching position of the insertion hole H of the fixing means 38 (FIG. 9). Then, using a drilling tool such as a drill, an insertion hole H is drilled so that the intersection point P is the center.

<Decomposition process>
Next, the "disassembly process" for disassembling the temporary handrail assembly 2 into the handrail rod 10 and the bracket 30 will be described. The bush portion 33 of the bracket 30 inserted into the metal pipe 11 is pulled out from the metal pipe 11, and the handrail temporary assembly 2 used in the marking process is disassembled into the handrail rod 10 and the bracket 30.例文帳に追加The disassembly process may be performed between the marking process and the punching process, or between the punching process and the bracket fixing process.

<Bracket fixing process>
Next, a “bracket fixing step” for fixing the bracket 30 to the wall surface W by the fixing means 38 will be described. The indicator portions 34 of the bracket 30 disassembled in the disassembly process are aligned with the four marks M marked on the wall surface W, and the bracket 30 is fixed to the wall surface W by fixing means 38 such as bolts.

<Handrail rod fixing process>
Next, the "handrail rod fixing process" for fixing the handrail rod 10 and the bracket 30 with screws will be described. The metal tube 11 of the handrail rod 10 disassembled in the disassembling step is inserted into the bush portion 33 of the bracket 30 fixed to the wall surface W in the bracket fixing step, and the end portion 15 of the handrail rod 10 is fitted into the concave portion 32 of the bracket 30. so that the end surface of the end portion 15 of the handrail rod 10 and the bottom surface 35 of the concave portion 32 are brought into contact with each other. Then, since the through hole 16 of the handrail rod 10 and the threaded hole 40 of the bush portion 33 are aligned with each other, the screw 41 is inserted into the through hole 16 and the screw 42 is screwed into the threaded hole 40, thereby removing the handrail. The rod 10 and the bracket 30 are fixed (FIG. 10). Thus, the handrail 1 in this embodiment is attached to the wall surface W. As shown in FIG.

According to the handrail 1 of the present embodiment described above, the bush portion 33 of the bracket 30 is inserted into the metal pipe 11 while the top portion 44 of the rib 42 is shaved. Due to the frictional force between the bracket 42 and the inner peripheral surface of the metal tube 11, the temporary assembled state of the bracket 10 can be firmly maintained without shaking. In addition, since there is no need to provide an engaging mechanism for temporary assembly unlike the conventional one, temporary assembly can be realized with a simple structure, and the appearance is not spoiled. Furthermore, since the inclined surface 45 of each rib 42 is formed so that the diameter of the imaginary outer circumference V3 decreases toward the tip, the cylindrical portion 36 of the bush portion 33 can be easily inserted into the metal tube 11. .

Further, by performing the marking process using the handrail temporary assembly 2 temporarily assembled in this manner, the mark M can be attached to the appropriate position where the handrail 1 is actually attached to the wall surface W. In addition, since the bracket 30 does not wobble when the rear surface of the base portion 31 of the bracket 30 is brought into contact with the wall surface W, the mark M can be attached to an accurate position.

Furthermore, shavings of the rib 42 generated when the bushing portion 33 is inserted into the metal pipe 10 are accommodated in the groove 43 provided on the bottom surface 35 of the recess 32, so that shavings of the rib 42 are removed from the handrail rod 10. and the bottom surface 35 of the recess 32, the handrail 10 attached to the wall surface W rattles, or the through hole 16 of the handrail 10 and the screw of the bracket 30 It is possible to prevent a trouble that the position of the joint hole 40 is displaced and the screw 41 cannot be fixed.

Moreover, since the cross-sectional shape of the end portion 15 of the handrail rod 10 and the cross-sectional shape of the recessed portion 32 of the bracket 30 are both elliptical, the end portion 15 of the handrail rod 10 can be fitted into the recessed portion 32 of the bracket 30. Thus, the handrail rod 10 is positioned on the bracket 30, and the positions of the through holes 16 of the handrail rod 10 and the screw engagement holes 40 of the bracket 30 can be easily aligned. In addition, since the circumferential movement of the handrail rod 10 is restricted by fitting the end portion 15 of the handrail rod 10 into the concave portion 32, the position of the through hole 16 and the threaded hole 40 may be displaced in the circumferential direction. do not have.

Since the index portions 34 are provided at two locations on each of the two imaginary lines V1 and V2 passing through the center C of the bush portion 33 on the outer peripheral portion of the base portion 31, the insertion hole H can be easily formed in the drilling process. The position can be specified and the insertion hole H can be drilled at an appropriate position. Furthermore, in the bracket fixing step, by aligning the index portions 34 of the bracket 30 with the four marks M marked on the wall surface W, the bracket 30 can be attached at an appropriate position.

Next, a modified example of the handrail of this embodiment will be described with reference to FIG. Only points different from the above-described embodiment will be described below.
If the end portion of the handrail rod can be formed long depending on the shape of the handrail rod, it is possible to omit the truncated conical portion of the bush portion of the bracket and form a long cylindrical portion. In the modified example, the end portion 71 of the handrail rod 70 and the bush portion 91 of the bracket 90 are longer than in the present embodiment, so that the end portion 71 of the handrail rod 70 has a plurality of through holes along the axial direction. The holes 72 are arranged side by side, and a plurality of screw engagement holes 92 are arranged side by side in the bush portion 91 along the projecting direction.

The present invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from the gist of the present invention.
In this embodiment, the handrail 1 is assembled with one handrail rod 10 and two brackets 30, but the present invention can be applied to a handrail assembled with a plurality of handrail rods and a plurality of brackets. may In this embodiment, the brackets 30 of the present invention are used to attach the handrail rod 1 to the wall surface W. However, the brackets of the present invention may be used for a part of them, and the rest may be known brackets. Further, the shape of the handrail rod 30 is not limited to that of the present embodiment, and the present invention can be applied to handrail rods having various shapes such as substantially L-shaped and substantially U-shaped. The number and shape of the ribs 42 are not limited to those of this embodiment as long as the bracket 30 can be held when the handrail rod 10 and the bracket 30 are temporarily assembled. In addition, regarding the number and shape of the grooves 43, when the bushing portion 33 of the bracket 30 is inserted into the metal tube 11 of the handrail rod 10, shavings of the ribs 42 can be accommodated, 35, it is not limited to this embodiment. Although the index portion 34 is concave in this embodiment, it may be formed in a convex shape, for example. In addition, in the present embodiment, the cross section of the metal pipe 11 is circular, and the cross section of the covering 12 is elliptical. and the cover 12 may be similar in shape to an elliptical cross section. The cross-sectional shape of the end portion 15 of the handrail rod 10 and the cross-sectional shape of the recessed portion 32 of the bracket 30 restrict the movement of the handrail rod 10 in the circumferential direction when the end portion 15 of the handrail rod 10 is fitted into the recessed portion 32. However, it is also possible to make the cross-sectional shapes of the end portion 15 of the handrail rod 10 and the recessed portion 32 of the bracket 30 a perfect circle.

INDUSTRIAL APPLICABILITY The present invention can be used for handrails attached to toilets, bathrooms, entrances and other facilities.

1 Handrail 2 Handrail Temporary Assemblies 10, 70 Handrail Rod 11 Metal Tube 12 Cover 13 Body Part 14 Curved Parts 15, 71 Ends 16, 72 Through Holes 30, 90 Bracket 31, Base Part 32 Recesses 33, 91 Bushing Part 34 Index portion 35 Bottom surface 36 Cylindrical portion 37 Trapezoidal portion 38 Fixing means 39 Insertion holes 40, 92 Threaded hole 41 Screw 42 Rib 43 Groove 44 Top 45 Inclined surface W Wall surface H Insertion hole

Claims (7)

A handrail comprising a handrail rod made of a metal pipe covered with a covering material, and a bracket fixed to the handrail rod with a screw and attached to a mounting surface by a fixing means,
The base portion of the bracket fixed to the mounting surface is provided with a concave portion into which the end portion of the handrail rod is fitted,
A bush portion that is inserted into the metal pipe protrudes from the bottom surface of the recess,
A plurality of ribs extending along the projecting direction are provided on the outer peripheral surface of the bush portion at predetermined intervals in the circumferential direction,
In the bracket, at least the bush portion is made of a synthetic resin softer than the metal pipe, and an imaginary outer circumference passing through the vertexes of the ribs in the bush portion is the same as or larger than the inner circumference of the metal pipe. is ,
The handrail rod and the bracket are in a state of a handrail temporary assembly in which the bush portion is inserted into the metal pipe of the handrail rod and the handrail rod and the bracket are combined without being fixed with screws, and the base portion of the bracket is attached to the The handrail temporary assembly is formed so that it can be brought into contact with a desired position of the mounting surface, a mark of the fixing position of the base portion is marked on the mounting surface, and the handrail temporary assembly can be separated from the mounting surface,
The bracket is provided with an insertion hole extending from the tip of the bush portion to the rear surface of the base portion,
An outer peripheral portion of the base portion is provided with four indicator portions that serve as indicators when marking a fixing position of the base portion on the mounting surface,
On the mounting surface, a drilling position for drilling the insertion hole for the fixing means is specified by an intersection of two lines connecting marks attached at positions corresponding to the indicator portions,
The index portions are provided at two locations on each of two imaginary lines passing through the center of the bush portion on the outer peripheral portion of the base portion,
The handrail is characterized in that the fixing means fixes the bracket to the mounting surface in a state of being inserted into an insertion hole drilled at a drilling position of the mounting surface and the insertion hole of the bracket. The handrail rod includes a main body serving as a handle portion, a curved portion curved perpendicularly from both ends of the main body toward the mounting surface, and the end extending from the tip of the curved portion toward the mounting surface. 2. A handrail according to claim 1, comprising: 3. The handrail according to claim 1, wherein the cross-sectional shape of the end of the handrail rod and the cross-sectional shape of the recess are formed to be non-perfect circles. A groove portion is provided around the bush portion on the bottom surface of the recess,
4. The handrail according to any one of claims 1 to 3 , wherein the rib extends from the inside of the groove along the outer peripheral surface of the bush along the projecting direction. A method for attaching a handrail according to claim 1 , comprising:
a temporary assembly step of inserting the bush portion of the bracket into the metal tube of the handrail rod and assembling a handrail temporary assembly in which the handrail rod and the bracket are combined without being fixed with screws;
a marking step of bringing the base portion of the bracket of the temporary handrail assembly into contact with a desired position on the mounting surface, marking the fixing position of the base portion on the mounting surface, and separating the temporary handrail assembly from the mounting surface; ,
A drilling step of drilling an insertion hole used for the fixing means in the mounting surface based on the mark marked in the marking step;
a disassembling step of disassembling the temporary handrail assembly used in the marking step into a handrail rod and a bracket;
a bracket fixing step of aligning the base portion of the bracket disassembled in the disassembling step with the mark and fixing the bracket to the mounting surface by the fixing means;
a handrail rod fixing step of inserting the metal tube of the handrail rod disassembled in the disassembling step into the bush portion of the bracket fixed to the mounting surface in the bracket fixing step, and fixing the handrail rod and the bracket with screws;
A method for attaching a handrail, comprising: A method for attaching a handrail according to claim 5 ,
In the marking step, marking a position corresponding to the indicator portion on the mounting surface,
A method of attaching a handrail, wherein in the bracket fixing step, an index portion of the bracket is aligned with the mark. A method for attaching a handrail according to claim 6 ,
In the marking step, marking positions corresponding to the respective indicator portions on the mounting surface,
In the perforation step, two lines connecting the marks marked in the marking step are drawn, and the intersection of the two lines is defined as a perforation position,
A method of attaching a handrail, wherein in the bracket fixing step, index portions of the bracket are aligned with the four marks.

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