JP2631084B2 - Handrail mounting bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail mounting bracket for mounting a handrail mounted on an inclined portion.

[0002]

2. Description of the Related Art When a handrail is to be installed on an inclined portion,
Since the erection angle of the handrail is different depending on the construction site, there is a problem that a special handrail mounting bracket having a different receiving angle must be prepared for each site.

For this reason, conventionally, as a handrail mounting bracket for supporting a handrail attached to the above-mentioned inclined portion, a base member fixed to the support body and a handrail receiving member fixed to the handrail side are butt-joined to a concave spherical surface and a convex spherical surface. A so-called universal joint structure is used, and the joint portion is changed in the coupling angle position to be used at sites having different inclination angles.

[0004]

However, in this type of handrail mounting bracket having a universal joint structure, the joint portion is formed by abutment of a concave spherical surface and a convex spherical surface, and the angle direction is orthogonal to the inclination angle direction of the handrail. However, because of the large degree of freedom, there is a drawback that looseness occurs after mounting and looseness easily occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to mount a support so that the angle can be freely adjusted according to the inclination angle of the handrail, and the angle adjustment fastening portion is securely firmly tightened so that it can be mounted after mounting. It is an object of the present invention to provide an improved handrail attachment which does not cause loosening.

[0006]

A handrail mounting bracket according to the present invention has a structure in which a handrail receiving member fixed to a side surface of a handrail and a support arm shaft on a support side are connected to a column or a wall surface so as to be adjustable in angle. A concave bearing end formed of a cylindrical concave surface perpendicular to the inclination angle direction of the handrail formed at the tip of the bearing arm shaft, and a cylinder corresponding to the cylindrical sliding concave surface of the concave bearing end bulged on the handrail receiving member. A contact bulge having a convex slidable surface is combined so as to be slidable only in the circumferential direction, and is bored from the inside of the contact bulge into a cylindrical slide convex surface of the contact bulge. The fixing screw inserted through the fastening screw insertion slot is screwed and integrated with the screw hole screwed at the tip of the support arm shaft, and the relative angle of the handrail receiving member with respect to the support arm shaft is set. The structure to tighten according to the inclination angle of the handrail
On the cylindrical sliding convex surface of the handrail receiving member, a large number of biting ridges having a fine ridge structure are provided on both sides of the fastening screw insertion long hole and provided so as to be orthogonal to the hole direction. And when the tightening of the fixing screw tightens the relative angle of the handrail receiving member with respect to the support arm shaft in accordance with the inclination angle of the handrail to be erected, the plurality of biting ridges face each other. The gist of the present invention is to provide a structure in which the moving surfaces are deformed and engaged to maintain the fastening angle.

[0007]

[0008]

According to the above construction, the structure in which the handrail receiving member and the supporting arm shaft on the supporting side are connected to each other so that the angle can be adjusted is a concave and convex having a cylindrical sliding surface which can be rotated only in one direction. Since the degree of freedom is limited due to the contact of the sliding surfaces, the connection can be ensured. Further, since a large number of biting ridges having a fine ridge structure formed on the sliding surface by fastening the two sliding surfaces are bitten and deformed between both surfaces, displacement of the sliding surface is prevented, and inclination of the handrail is prevented. The angle adjusting fastening portion is securely and firmly tightened according to the angle. For this reason, it is possible to obtain a structure that does not loosen after mounting.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a handrail mounting device according to the present invention. The handrail mounting bracket of the present invention includes a base member 1 fixed to a fixed member such as a column b or a wall surface of a fence on which a handrail a is to be installed, a support arm shaft 2 protruding from the base member, and a handrail side. It comprises a handrail receiving member 3 to be fixed and a fixing screw 4 for tightening and fixing the handrail receiving member to the support arm shaft 2 at a tilt angle adjustment position.

The base member 1 needs to change its design shape depending on the condition of the fixed surface of the fixed member, and various components are prepared. In this embodiment, a cylindrical support b
A base member 1 having a structure fixed by screws on a side surface is shown. The base member has a bulging portion 6 having a flat surface 6a on the outer surface side at the center of the substrate portion 5 having an arc-shaped cross section extending along the outer peripheral surface corresponding to the outer diameter of the cylindrical pillar b. A crimping hole 7 formed of a deformed circle (in the present embodiment, a part of a circular hole is shown in which an arc portion is parallel) is formed in the center. Reference numerals 8, 8... Denote mounting screw insertion holes formed in the corners of the substrate portion 5.

The bearing arm shaft 2 is formed by bending a columnar member at a substantially central portion of the shaft in a right angle direction to form a base member side shaft portion 2a and a handrail receiving member side shaft portion 2b, and a tip of the base member side shaft portion 2a. Next, a caulking projection 9 having an insertion cross section corresponding to the caulking hole 7 is formed. At the tip of the handrail receiving member side shaft portion 2b, a concave bearing end 10 composed of a cylindrical concave surface 10a parallel to the axial direction of the base member side shaft portion 2a is formed.
A screw hole 11 is screwed from the cylindrical concave surface 10a at the axial center position of a. The bearing arm shaft 2 has a caulking projection 9 inserted into the caulking hole 7 of the base member 1 from the outer surface side and caulking or welding on the back surface side. The portion 2a is upright, and the handrail receiving member side shaft portion 2b is fixedly integrated so as to coincide with the upward direction of the base member 1.

The handrail receiving member 3 corresponds to the outer diameter of a handrail a having a pipe-shaped or shaft-shaped circular outer periphery, and is provided at the center of a receiving plate portion 12 having an arc-shaped cross section extending along the outer peripheral surface thereof. Cylindrical sliding concave surface 1 formed on concave bearing end 10 of bearing arm shaft 2
A contact swelling portion 13 having a cylindrical sliding convex surface 13a corresponding to the cylindrical sliding convex surface 13a is formed so as to bulge toward the outer surface side, and a fastening screw extending circumferentially at the center in the width direction of the cylindrical sliding convex surface 13a. The insertion slot 14 is formed by drilling the cylindrical sliding convex surface 13a at a central angle of 45 degrees. Reference numerals 15 and 15 indicate mounting screw insertion holes formed in the end of the receiving plate portion 12.

The cylindrical sliding convex surface 13a formed on the contact bulging portion 13 of the handrail receiving member 3 has a slot 1 for inserting a fastening screw.
A number of biting ridges 16, 16,... Having a fine ridge structure (mountain height: 0.5 mm), which are provided on both sides of 4 and perpendicular to the hole direction, are arranged in the hole direction. It becomes.

The handrail receiving member 3 has an abutting bulging portion 13 with respect to the concave bearing end 10 of the bearing arm shaft 2 and a cylindrical sliding concave surface 10.
a and the cylindrical sliding convex surface 13a are brought into close contact with each other, and the fastening screw insertion slot 14 is inserted from the inside of the contact bulging portion 13.
The fixing screw 4 into which the screw is inserted is screwed into the screw hole 1 of the handrail member side shaft portion 2b.
1 and tightened and fixedly integrated at the position of the inclination angle of the receiving plate portion 12 with respect to the handrail member-side shaft portion 2b (determined corresponding to the inclination angle of the handrail a to be installed).

Due to the fastening action of the fixing screw 4, a large number of biting ridges 16, 16 having a fine ridge structure sandwiched between the cylindrical sliding concave surface 10a and the cylindrical sliding convex surface 13a.
Is pressed against the cylindrical sliding concave surface 10a to crush and deform the mutual surfaces, thereby acting to prevent sliding in the curved surface direction. As a result, unless the fixing screw 4 is loosened, the cylindrical sliding concave surface 10a
And the cylindrical sliding convex surface 13a does not slip, and the initial setting angle of the handrail receiving member 3 is maintained.

In the handrail mounting bracket having the above structure, the angle of fastening between the handrail receiving member 3 and the support arm shaft 2 is adjusted in accordance with the angle of the handrail a to be erected and the base member 1 is fixed to the column b. . Using the tapping screw c or the like, it is fastened and fixed to the support b through the mounting screw insertion holes 8, 8,. Due to this fixation, the handrail receiving member-side shaft portion 2a of the support arm shaft 2 faces in the vertical direction, and the handrail receiving member 3 fastened to the handrail receiving member side shaft portion 2a is supported in the direction in which the handrail a is erected. Accordingly, the handrail a is placed on the arc-shaped surface of the receiving plate portion 12 of the handrail receiving member 3, and the tapping screws c and the like inserted through the mounting screw holes 15, 15 are fastened and fixed to the handrail a to fix the handrail a. Complete construction work.

[0017]

As described above, in the handrail mounting bracket according to the present invention, the structure in which the angle between the handrail receiving member and the supporting arm shaft on the supporting side is freely adjustable is a columnar shape which is rotatable only in one direction. A large number of biting ridges consisting of a fine ridge structure formed on the sliding surface by fastening the two sliding surfaces due to the contact of the concave and convex sliding surfaces with the sliding surface Since the structure is designed to prevent the sliding surface from shifting due to biting deformation, it is possible to easily mount and support the handrail at all inclination angles on site, and the angle adjustment fastening part is securely and firmly tightened. It has such features that it does not loosen after mounting, and the practical effect after implementing the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing one embodiment of a handrail mounting bracket according to the present invention.

FIG. 2 is a side view in which the same portion is cut away.

FIG. 3 is an enlarged sectional view of a portion A in FIG.

FIG. 4 is a front view (a), a right side view (b), and a bottom view (c) showing a base member.

FIG. 5 is a front view (a), a right side view (b), and a left side view (c) showing a bearing arm shaft, partially cut away.

6A is a front view, FIG. 6B is a right side view, and FIG. 6B is a bottom view showing the handrail receiving member.

7 is a cross-sectional view taken along the line BB in FIG. 7 (a), a cross-sectional view taken along the line CC (b), and an enlarged front view of a portion D viewed from the arrow (c).
It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base member 2 Bearing arm shaft 2a Base member side shaft portion 2b Handrail receiving member side shaft portion 3 Handrail receiving member 4 Fixing screw 10 Depressed bearing end 10a Columnar concave surface 11 Screw hole 12 Receiving plate portion 13 Contact bulging portion 13a Cylindrical Sliding convex surface 14 Long hole for fastening screw insertion 15 Mounting screw insertion hole 16 Biting ridge a Handrail b Support c Tapping screw

Claims (1)

(57) [Claims] 1. A handrail receiving member fixed to a side surface of a handrail and a structure in which a support arm shaft on a support side is connected to a column or a wall so as to be adjustable in angle, the inclination angle of the handrail formed at the tip of the support arm shaft. A concave bearing end composed of a cylindrical concave surface perpendicular to the direction, and a contact bulging portion having a cylindrical sliding convex surface corresponding to the cylindrical sliding concave surface of the concave bearing end bulged on the handrail receiving member. Combined so as to be slidable only in the circumferential direction, and fixed by inserting a fastening screw insertion slot formed from the inside of the contact bulging portion to the cylindrical sliding convex surface of the contact bulging portion. Screw
It becomes a structure that is screwed and integrated with a screw hole screwed at the tip of the bearing arm shaft. The cylindrical sliding convex surface of the handrail receiving member is located on both sides of the fastening screw insertion long hole and A large number of biting ridges having a fine ridge structure are provided in the hole direction and are provided so as to be orthogonal to each other, and a handrail for erection of a relative angle of the handrail receiving member with respect to the support arm shaft by tightening the fixing screw is provided. A handrail mounting bracket, wherein when tightened corresponding to an inclination angle, the large number of biting ridges deform and engage between the opposed sliding surfaces to maintain the fastening angle.