JP4202868B2 - Handrail Kasagi connection device - Google Patents

Description

  The present invention relates to a connecting device for connecting adjacent end portions of a handrail head, and particularly to a connecting device for a handrail head having a tubular shape.

  The handrail headboard is often constructed by connecting a headboard member of a predetermined length manufactured at a factory at a construction site, and a technology for connecting the headboard has been developed. Regarding the connection of the headboard having a tubular cross section, a technology has been developed in which a connection tool is interposed in the end portion of the adjacent headboard, and an upper and lower locking plate screwed into a bolt is inserted between the right and left tubular headboards, A technique (for example, see Patent Document 1) in which the upper and lower locking plates are brought into contact with and connected to the inside of the headboard by rotating the bolt, and an elastic member sandwiched by a nut on a screw shaft extending in the axial direction of the tubular headboard. There is a technique (see, for example, Patent Document 2) in which the elastic member is expanded in the circumferential direction by compressing both ends of the elastic member and connected by crimping the elastic member to the inner surface of the tubular headboard. However, in these connection techniques, since the contact area between the tubular headboard and the connection tool is relatively small, the connection may be loosened or separated during use of the handrail.

Japanese Patent No. 2795817 JP 2002-147420 A

  The problem to be solved by the present invention is that a handrail that can allow expansion and contraction due to a temperature change of the handrail and has sufficient connection strength, is easy to connect, and has an elegant appearance at the connection point. It is to provide a capsaki connecting device.

  The handrail headboard connecting device of the present invention includes a first connecting member including a peripheral plate portion having an outer surface that abuts a considerable area of an inner peripheral surface of a tubular headboard to be connected, and the entire peripheral plate of the first connecting member. The main feature is to use a second connecting member provided with a means for expanding the angle.

The present invention has the following effects.
A. When both wedge-shaped side surfaces of the second connection member move forward while sliding on both inclined surfaces of the first connection member, the peripheral plate portion of the first connection member is expanded and the outer surface is crimped to the inner surface of the tubular headboard. Thus, both the tubular headboards are connected while maintaining a sufficient connection strength by the frictional force.
B. Since the handrail headboard connecting device is connected by frictional force, it is possible for the tubular headboard to allow expansion and contraction due to temperature changes, and even when using such a frictional force, the tubular headboard will rattle or fall off. It has sufficient connection strength.
C. Connection work is easy and no special skill is required. Furthermore, since the connecting means is not exposed to the outside at the connecting portion, the appearance is graceful.

  The handrail headboard connecting device according to the present invention is a handrail headboard connecting device that is inserted into and attached to opposite ends of adjacent tubular headboards, and has both an open outer surface having a major arc along the inner diameter of the tubular headboard to be inserted. A first connecting member provided with a projecting ridge having an axially oriented screw hole on the inner side of the upper part of the peripheral plate portion connected to the lower edge and having both inclined surfaces facing each other on the inner side of the lower edge; Each of the lower edges has both wedge-shaped side surfaces to be fitted to the both inclined surfaces, and an axially-oriented through hole is formed, and is disposed in a space surrounded by the both inclined surfaces and the inner surface of the tubular headboard. The second connecting member and the axially through hole of the second connecting member are screwed into the axially threaded hole of the first connecting member, and the peripheral plate portion of the first connecting member is expanded by tightening. The basic feature is that a screw with a head to be opened is provided.

  Further, the handrail headboard connecting device of the present invention is characterized in that the adjacent tubular headboards are connected in a state where a joint gap is provided between both opposing end portions.

  Furthermore, in the handrail headboard connecting device according to the present invention, the headed screw also serves as a support rod erected from a bracket attached to a building or the like, and both ends of the adjacent tubular headboard are connected and The connecting portion is supported by the building or the like.

  In the handrail headboard connecting device of the present invention, a separate headed screw is mounted at each of the tubular headboards connected adjacent to each other for the pair of the first connecting member and the second connecting member. It is characterized by that.

The detailed features of the present invention will be described with reference to the embodiments described in the accompanying drawings.
1 to 3, reference numerals 1 and 1 denote adjacent tubular headboards to be connected. The tubular headboards 1 and 1 are made of a metal tube such as a stainless steel tube or a synthetic resin-coated steel tube. The connection of the tubular headboards 1, 1 is performed by a metal first connection member 2, a second connection member 3 and a headed screw 4. The first connecting member 2 includes a peripheral plate portion 6 that has a dominant arc outer surface along the inner diameter of the tubular headboard 1 and 1 to be inserted, and is connected to both open lower edges 5 and 5. A ridge 8 having an axially oriented screw hole 7 is provided on the inner side, and both narrow inclined surfaces 9 and 9 are provided on the inner side of both lower edges 5 and 5 of the peripheral plate portion 6. Further, the second connection member 3 has both wedge-shaped side surfaces 10 and 10 which are fitted to both inclined surfaces 9 and 9 at both lower edges 5 and 5 of the first connection member 2, and an axially-oriented through hole 11 is formed. In addition, the size is set in a space surrounded by the inclined surfaces 9 and 9 and the inner surface of the tubular headboard 1. Further, the headed screw 4 is screwed into the axially oriented screw hole 7 of the first connecting member 2 through the axially oriented through hole 11 of the second connecting member 3.

  In order to connect the tubular headboards 1, 1, semicircular notches 12 that form circular holes at the time of connection for inserting the headed screws 4 are provided at the ends of the respective tubular headboards 1. Then, the first connecting member 2 including the second connecting member 3 is inserted over both the tubular caps 1, 1, and the tubular caps 1, 1 are arranged with a joint gap 13 between the two edges. The joint gap 13 is effective to cope with the expansion and contraction of the tubular headboard 1 due to the temperature change after installation. Next, the headed screw 4 is inserted into the axial direction through hole 11 of the second connection member 3, and the tip thereof is screwed into the axial direction screw hole 7 of the first connection member 2. When the headed screw 4 is further rotated, the wedge-shaped side surfaces 10 and 10 of the second connecting member 3 slide on the both inclined surfaces 9 and 9 of the first connecting member 2 and the head of the headed screw 4 is moved to the first position. The two connecting members 3 are advanced toward the axis. When both wedge-shaped side surfaces 10 of the second connecting member 3 move forward while sliding on both inclined surfaces 9 of the first connecting member 2, the peripheral plate portion 6 of the first connecting member 2 is expanded and the outer surface thereof is expanded. It is crimped to the inner surface of the tubular headboard 1, and by this crimping, both the tubular headboards 1, 1 are connected while maintaining a sufficient connection strength by frictional force. Since the handrail headboard connecting device according to the present invention is connected by frictional force, the tubular headboard 1, 1 can allow expansion and contraction due to temperature change. It has sufficient connection strength so that it will not rattle or fall off. Also, connection work is easy and no special skill is required. Furthermore, since the connecting means is not exposed to the outside at the connecting portion, the appearance is graceful.

  FIG. 4 shows an example in which the headed screw 4 is also used as a support rod having a lower end fitted and fixed to the stepped vertical hole 15 at the tip of the bracket 14 attached to the building B. In this case, the headed screw 4 serving as a support rod is provided with a fastening screw hole 17 continuous with a polygonal hole 16 into which a polygonal wrench is fitted at the lower end thereof, and connects the above-described tubular caps 1 and 1. The rotation of the headed screw 4 is performed by inserting a polygonal wrench into the polygonal hole 16, and then the headed screw 4 is joined to the bracket 14 by tightening the fastening screw 18 into the fastening screw hole 17 from below. Is done. Since the lower diameter of the stepped vertical hole 15 allows a polygonal wrench to pass through, the turning operation of the headed screw 4 for connecting the tubular caps 1 and 1 of the headed screw 4 serving as a supporting rod is headed. This is also possible in a state in which the screw 4 is fitted in the stepped vertical hole 15 of the bracket 14. As described above, the present invention has an object to connect both ends of adjacent tubular headboards and to support the connection portion on a building or the like.

  FIG. 5 shows an example in which two headed screws 4 for connecting the tubular headboards 1 and 1 are used. In this case, the notch 12 for inserting the headed screw 4 provided in the tubular headboard 1 is provided in a circular shape in each tubular headboard 1. If two headed screws 4 are used, since the stress due to the bolts is distributed and applied to the first connecting member 2 and the second connecting member 3, the deformation of these members becomes uniform. It is possible to obtain a large frictional force, and it is more effective when used for connection points that require a strong connection.

It is a partial cutaway perspective view of a handrail Kasagi connection device. It is a cross-sectional view of a handrail head board connecting device. It is a longitudinal cross-sectional view of the handrail Kasagi connection apparatus. It is a transverse cross section at the time of making a connection part support a building etc. It is a longitudinal cross-sectional view of the handrail head board connecting device which uses two screws with a head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubular headboard 2 1st connection member 3 2nd connection member 4 Screw with head 5 Lower edge 6 Circumferential plate part 7 Axial direction screw hole 8 Projection 9 Inclined surface 10 Wedge-shaped side surface 11 Axial direction through-hole 13 Joint gap 14 Bracket

Claims (4)

  An upper part of the peripheral plate portion connected to both lower edges having an outer surface of a dominant arc along the inner diameter of the inserted tubular headboard in a handrail headboard connecting device to be inserted and attached to both opposite ends of adjacent tubular headboards A protrusion having axially oriented screw holes is provided on the inner side, and a first connection member having both inclined surfaces facing each other on the inner side of the lower edges, and the two inclined parts on the lower edges. A second connecting member having both wedge-shaped side surfaces fitted to the surface and having a through hole oriented in the axial center and disposed in a space surrounded by the inclined surfaces and the inner surface of the tubular headboard; A head-attached screw that is screwed into the axially-oriented screw hole of the first connecting member through the axially-oriented through hole of the two connecting members and widens the peripheral plate portion of the first connecting member by tightening; Handrail Kasagi connection device characterized by that.   The handrail headboard connecting apparatus according to claim 1, wherein the adjacent tubular headboards are connected in a state where a joint gap is provided between both opposing ends.   The headed screw also serves as a support rod standing from a bracket attached to a building or the like, and both ends of the adjacent tubular headboard are connected and the connection portion is supported by the building or the like. The handrail headboard connecting apparatus according to claim 1 or 2, wherein   The set of said 1st connection member and said 2nd connection member WHEREIN: The separate headed screw is mounted | worn at the location of each said tubular headboard connected adjacently. Item 10. The handrail headboard connection device according to item 2.

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