JP2006002522A - Corner fitting for pipe handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corner fitting for a pipe handrail capable of eliminating the need of cutting the end face of a pipe in a curved shape, capable of eliminating the need of bending a corner pipe and the need of two vertical column pipes, less requiring weld points, and facilitating the assembly of the pipe handrail. <P>SOLUTION: A short vertical connection pipe 3 is connected to the curved part lower surface of a 90° elbow having both end faces 4 and 5 connected to horizontal pipes 6 and 7 so that the centerlines of the two horizontal pipes 6 and 7 are orthogonal to the centerline of the vertical column pipe 9 at one point. Thus, the tip parts of the horizontal pipes 11 and 12 forming the intermediate rails can be welded to the vertical column pipe 9 by linearly extending it without bending it. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a corner fitting for a pipe handrail used when assembling a handrail with a pipe.

  Handrails installed in buildings such as factories are generally pipe welded structures because they are excellent in terms of strength, durability, aesthetics, cost, and the like. At the corner portion, as shown in FIGS. 11 and 12, two horizontal pipes 31 and 32 constituting the upper rail are connected by a 90 ° elbow 33. The height of the handrail is usually about 1100 to 1200 mm from the floor surface. Below the two horizontal pipes 31 and 32 constituting the upper rail, the horizontal pipe 34 constituting the middle rail for preventing the fall. , 35 are usually provided in parallel with about 2 to 3 wires.

  The two horizontal pipes 31 and 32 constituting the upper crosspiece and the horizontal pipes 34 and 35 constituting the middle crosspiece are welded to the upper ends of the vertical support pipes provided at the corner portions. When the elbow 33 is welded to the lower center surface of the elbow 33, the vertical support pipe is displaced slightly inward from the intersection of the center lines of the two horizontal pipes 31 and 32 constituting the upper rail. Therefore, even if the horizontal pipes 34 and 35 constituting the middle rail are directly welded to the vertical support pipe, it is impossible to weld the vertical support pipe by an amount slightly displaced inward.

  Therefore, as shown in FIGS. 11 and 12, two vertical support pipes 36 and 37 are provided near the corner, and the two horizontal pipes 31 and 32 constituting the upper cross and the horizontal pipe 34 constituting the middle cross, 35 is fixed by welding, and a corner portion is formed at a corner portion between the vertical support pipes 36 and 37 by a method of welding and fixing a corner pipe 38 manufactured by bending it into an arc shape by a pipe bender.

  For this reason, conventionally, two vertical support pipes 36 and 37 are required near the corner, time and labor are required to bend the corner pipe 38 with a pipe bender, and there are many welding points, so that assembly is possible. There was a problem that it was difficult and costly. In addition, the upper end surfaces of the vertical support pipes 36 and 37 need to be cut in an arc shape in accordance with the curved surfaces of the two horizontal pipes 31 and 32 that constitute the upper rail in terms of strength. It was.

In addition to this, for example, Patent Document 1 describes a pipe handrail configured using an elbow (die joint) and cheese (die joint), but the structure is complicated by requiring two types of metal fittings, The vertical support pipe and the horizontal pipe are displaced from each other, and there is a problem that a step is formed on the outer peripheral surface and the aesthetic appearance is impaired.
Registered Utility Model No. 3041218

  The present invention solves the above-mentioned problems, does not require the end surface of the pipe to be cut with a curved surface, does not require bending of the corner pipe, does not require two vertical strut pipes, assembles pipe handrails with fewer welding points. It is made in order to provide the corner metal fittings for a pipe handrail which makes it easy.

  The corner metal fitting for pipe handrail of the present invention made to solve the above problem is a vertical connection for connecting a vertical support pipe to the lower surface of a curved portion of a 90 ° elbow where a horizontal pipe is connected to each of both end faces. The pipes are connected so that the center line of the two horizontal pipes and the center line of the vertical support pipe are orthogonal at one point.

  The corner bracket for pipe handrails of the present invention has a vertical connecting pipe for connecting a vertical column pipe to the lower surface of a curved portion of a 90 ° elbow to which two horizontal pipes constituting an upper rail are connected to both end faces. Since the center line of the two horizontal pipes and the center line of the vertical pipe are connected so as to be orthogonal at one point, the horizontal pipe constituting the middle rail is extended straight and welded to the vertical support pipe can do.

  For this reason, it is not necessary to produce a corner pipe by bending with a pipe bender as in the prior art, and only one vertical support pipe is required, and the number of welding points is reduced. The upper end surface of the vertical support pipe may be cut horizontally and welded. For this reason, pipe handrails can be manufactured in a much shorter time and at a lower cost than before. Furthermore, since the pipe handrail is formed by matching the center line of the two horizontal pipes with the center line of the vertical support pipe, there is an advantage that the appearance of the corner portion is excellent.

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
1-4 is a figure which shows the corner metal fitting 1 for pipe handrails of this invention, and FIG. 5 is a figure which shows a part of pipe handrail assembled using the corner metal fitting 1 for pipe handrails. The corner metal fitting 1 for a handrail of the present invention is composed of a 90 ° elbow 2 and a vertical connecting pipe 3 connected to the lower surface of the curved portion.

  The 90 ° elbow 2 is for connecting two horizontal pipes 6 and 7 constituting an upper rail to both end faces 4 and 5 by welding. The vertical connecting pipe 3 is for connecting the end face of the vertical support pipe 9 to the lower end face 8 by welding. The corner metal fitting 1 for pipe handrails of the present invention includes the center lines a and b of the two horizontal pipes 6 and 7 in which the center line c of the vertical column pipe 9 connected to the lower end of the vertical connecting pipe 3 constitutes the upper rail. The vertical connecting pipe 3 is connected so as to be orthogonal at one point P. The connection between the 90 ° elbow 2 and the vertical connecting pipe 3 can be performed by welding, and can be integrally cast.

  As shown in FIGS. 5 and 6, such a pipe handrail corner fitting 1 is welded by abutting the lower end surface 8 of the vertical connecting pipe 3 to the upper end of the vertical column pipe 9 fixed to the floor surface 10. ° Two horizontal pipes 6 and 7 constituting the upper rail are welded to both end faces 4 and 5 of the elbow 2. At this time, as shown in FIG. 7, the center line of the vertical support pipe 9 is orthogonal to the center lines of the two horizontal pipes 6 and 7 at one point P. For this reason, the horizontal pipes 11 and 12 constituting the middle rail can be extended in a straight line without being bent as in the prior art, and the leading ends thereof can be welded to the vertical column pipe 9.

  Therefore, it is not necessary to produce a corner pipe by bending with a pipe bender as in the conventional case, and only two vertical support pipes are conventionally provided at the corner, and the number of welding points is reduced. As a result, assembly is facilitated, and construction time can be reduced and costs can be reduced. Further, the end face of each pipe may be welded while being cut directly without being cut into a curved shape. This makes it possible to manufacture the pipe handrail in a much shorter time and at a lower cost than before.

  8-10 is a figure which shows the corner metal fitting 21 for pipe handrails of another embodiment. The pipe handrail corner fitting 21 is also composed of a 90 ° elbow 22 and a vertical connecting pipe 23 connected to the lower surface of the curved portion, as shown in FIGS. The 90 ° elbow 22 is for connecting the two horizontal pipes 6 and 7 constituting the upper rail to the both end faces 24 and 25 by welding, and the vertical connection pipe 23 is connected to the lower end face 28 of the vertical support pipe. This is for connecting the end faces of 9 by welding. The connection between the 90 ° elbow 22 and the vertical connecting pipe 23 can be performed by welding, and can be integrally cast.

  In this pipe handrail corner fitting 21, the center line c of the vertical column pipe 9 connected to the lower end of the vertical connecting pipe 23 is orthogonal to the center lines a and b of the two horizontal pipes 6 and 7 at one point P. A vertical connecting tube 23 is connected to the 90 ° elbow 22. The 90 ° elbow 22 has a large bending radius, and the vertical connecting pipe 23 is curved and connected to the lower surface of the 90 ° elbow 22. As a result, the external appearance of the vertical connecting pipe 23 shifted from the outer peripheral surface of the curved portion of the 90 ° elbow 22 to the outside is provided, and the design is excellent.

  Even when a handrail is manufactured using this pipe handrail corner fitting 21, the horizontal pipes 6 and 7, the vertical support pipe 9 and the horizontal pipes 11 and 12 forming the middle rail are shown in FIG. It will assemble similarly to the case where the corner metal fitting 1 for pipe handrails shown in 1-4 is used.

It is the perspective view which looked at the corner metal fitting for pipe handrails of the present invention from the lower part. It is a top view of the corner metal fitting for pipe handrails. It is a front view of the corner metal fitting for pipe handrails. It is a side view of the corner metal fitting for pipe handrails. It is a perspective view which shows the corner part of the handrail assembled using the corner metal fitting for pipe handrails of this invention. It is a perspective view of the handrail assembled using the corner metal fitting for pipe handrails of the present invention. It is a top view of a corner part. It is a top view of the corner metal fitting for pipe handrails of another embodiment. It is a front view of the corner metal fittings for pipe handrails of another embodiment. It is a side view of the corner metal fittings for pipe handrails of another embodiment. It is a perspective view of the conventional pipe handrail. It is a top view of the conventional pipe handrail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Corner metal fittings for pipe handrails 2 90 degree elbow 3 Vertical connection pipe 4 End face of 90 degree elbow 5 End face of 90 degree elbow 6 Horizontal pipe which comprises upper crosspiece 7 Horizontal pipe which comprises upper crosspiece 8 Lower end face of vertical connection pipe 9 Vertical strut pipe 10 Floor surface 11 Horizontal pipe constituting middle rail 12 Horizontal pipe constituting middle rail 21 Corner fitting for pipe handrail 22 90 ° elbow 23 Vertical connecting pipe 24 End face of 90 ° elbow 25 End face of 90 ° elbow 28 Vertical Lower end surface of connecting pipe

Claims (1)

The vertical connecting pipe for connecting the vertical strut pipe is connected to the bottom surface of the curved part of the 90 ° elbow where the horizontal pipe is connected to both end faces, and the center line of the two horizontal pipes and the center line of the vertical strut pipe are Corner fittings for pipe handrails, characterized by being connected so as to be orthogonal at one point.

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