JP4425657B2 - Handrail Kasagi connection device - Google Patents

Description

  The present invention relates to a connecting device for connecting adjacent end portions of a handrail headwood, and more particularly to a connecting device for a handrail headboard 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 technique for connecting the headboard member 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 upper and lower locking plates are brought into contact with and connected to the inside of the headboard by tightening bolts, or an elastic member sandwiched by nuts on a screw shaft extending in the axial direction of the tubular headboard. In addition, there is a technique (for example, see Patent Document 2) in which both ends of the elastic member are compressed to expand the elastic member in the circumferential direction and the elastic member is connected to the inner surface of the tubular headboard by pressure bonding. 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 inventor of the present invention has first developed a handrail headboard connecting device (Japanese Patent Application No. 2003-310166, hereinafter referred to as “improved device”) improved with respect to these known examples. The outline of the improved device developed earlier will be described with reference to FIG. 7. In the handrail headboard connecting device to be inserted and attached to the opposite end portions of the adjacent tubular headboard 31, it follows the inner diameter of the tubular headboard 31 to be inserted. A protrusion 38 having an axially oriented screw hole 37 is provided on the inner side of the upper portion of the peripheral plate portion 36 that has an outer surface of a dominant arc and is open to both lower edges 35, 35, and both the lower edges 35, 35. A first connecting member 32 having both inclined surfaces 39, 39 facing each other on the inner side, and both wedge-shaped side surfaces 40, 40 fitted to the both inclined surfaces 39, 39, and an axially-oriented through hole 41 are provided. And the second connecting member 33 disposed in a space surrounded by the inclined surfaces 39 and 39 and the inner surface of the tubular headboard 31, and the axial direction of the first connecting member 32 through the axially oriented through hole 41. A screw 34 with a head screwed into the screw hole 37, By tightening the screw 34, the second connecting member 33 is advanced, and the peripheral plate portion 36 of the first connecting member 32 is expanded by adjoining the inclined surfaces 39, 39 of both wedge-shaped side surfaces 40, 40 and adjacent to each other. A tubular headboard 31 is connected. Although this improved device makes it possible to obtain a tubular headboard connection superior to the connection device shown as a known example, further improvements are required depending on the location of use.

  One reason for the need for further improvement is that the headed screw 34 is also used as a support rod S standing from a bracket R attached to the building B, and both ends of adjacent tubular headboards 31 are connected. In addition, when this connection portion is supported by the building B and such connection support is performed at predetermined intervals of the building B, the head provided with the support rod S for connecting the tubular headboard 31 is provided. The step of rotating the attached screw 34 to advance the second connecting member 33 and expanding the peripheral plate portion 36 as described above to complete the connection of the adjacent tubular headboard 1 is performed. Depending on the dimensional error, the degree of tightening, and the like, there may occur a situation in which the amount of entry of the headed screw 34 and the second connection member 33 with respect to the first connection member 32 at each support location is different when the connection is completed. When such a situation occurs, the distance H between the surface of the bracket R and the axial center of the tubular headboard 31 is different for each connection support location, and is tubular with respect to each bracket R previously attached to the predetermined height of the building B. The height of the headboard 31 is not constant, resulting in unevenness in the vertical position of the entire handrail headboard. (In addition, the code | symbol C in the figure has shown the coating | coated member which coat | covers the bracket R lower surface.)

  As another problem, when the caps are simply connected to each other, if the second connection member 33 is mounted slightly displaced from the first connection member 32 at the beginning of assembly, the axial center through hole 41 is formed. In some cases, the screwed tightening was difficult because the tip of the inserted head screw 34 did not coincide with the position of the axially oriented screw hole 37. Furthermore, when the caps are connected to each other, when the amount of the second connecting member 33 entering is large, the first connecting member 32 and the second connecting member 33 come into contact with each other, and further tightening is not possible. It was.

  The problem to be solved by the present invention is that it has sufficient connection strength while allowing expansion and contraction due to temperature changes of handrails, and it is also used for mounting to buildings as well as for mutual connections. An object of the present invention is to provide a handrail headboard connecting device capable of ensuring an accurate installation position of a headboard and performing work easily.

  The handrail headboard connecting apparatus according to the present invention is a handrail headboard connecting apparatus that is inserted into and mounted at opposite ends of adjacent tubular headboards, and has a dominant arc outer surface along the inner diameter of the inserted tubular headboard and sandwiches the opening. A first connecting member provided with two inclined surfaces facing each other on the inner side of both lower edges of the arc-shaped plate portion connected to both lower edge portions of the wall, and fitted to both inclined surfaces of the first connecting member. A second connecting member having a pair of wedge-shaped side surfaces and having a through screw hole penetrating in the vertical direction of the central portion and disposed between the inclined surfaces of the first connecting member, and the penetrating through of the second connecting member An operating screw that is screwed into the screw hole from the outside and has a tip abutting against the inner top surface of the arc-shaped plate portion of the first connecting member, the second connecting member being tightened by the operating screw, Presses the two inclined surfaces of the first connecting member to expand the arc-shaped plate portion of the first connecting member. It is intended to be.

The present invention has the following effects.
A. When the second connecting member is pulled down by tightening the operation screw and both wedge-shaped side surfaces of the second connecting member are pressed while sliding on both inclined surfaces of the first connecting member, the arc-shaped plate portion of the first connecting member is expanded. Then, the outer surface is crimped to the inner surface of the tubular headboard, and the two adjacent tubular headboards are connected to each other while maintaining a sufficient connection strength by friction 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 can fall off or rattle. It has sufficient connection strength.
C. The operation screw has a screw shaft portion formed on an upper portion of a support collar portion erected from a bracket attached to a building or the like, and both ends of adjacent tubular headboards are connected. In the aspect to be supported by a building or the like, even if the adjacent tubular headboards are connected by rotating and tightening the operating screw, the relative height between the operating screw and the tubular headboard does not change before and after the rotating and tightening operation. When both ends of the tubular headboard are connected at every predetermined interval of the building and each connection portion is supported by each bracket attached to the building, the tubular headboard is attached to each bracket attached to the predetermined height. The height is constant, and the entire headboard does not cause unevenness in the vertical direction.
D. Since the operation screw is screwed into the through screw hole of the second connection member visible from the outside, the screw connection is easy and the second connection member is attached to the first connection member at the stage of starting screwing. Even if it is slightly displaced, there will be no difficulty in screw tightening.
E. Since the range in which the second connecting member can be moved downward with respect to the first connecting member is set to be relatively large, it is possible to increase the tightening movement distance and obtain a strong connection of the tubular headboard by sufficient tightening. .
F. Connection work is easy and requires no special skill. 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. The handrail headboard connecting device has a dominant arc outer surface along the inner diameter of the inserted tubular headboard and has an opening. A first connecting member provided with two inclined surfaces facing each other on the inner side of the lower edge portions of the arc-shaped plate portion connected to both lower edge portions of the sandwiched wall, and both inclined surfaces of the first connecting member A second connecting member having both wedge-shaped side surfaces to be fitted and having a through screw hole penetrating in the vertical direction of the central portion and disposed between the inclined surfaces of the first connecting member; and the second connecting member An operating screw that is screwed into the through screw hole from the outside and whose tip abuts against the inner top surface of the arc-shaped plate portion of the first connecting member is formed, and the two connecting members of the second connecting member are tightened by tightening the operating screw. The arcuate plate of the first connecting member is pressed by the side surfaces of the inclined surfaces of the first connecting member. The essential feature that is expanding the.

  Moreover, the top surface of the arc-shaped plate portion of the first connection member is formed in a flat shape.

  Further, the adjacent tubular headboards are connected in a state where a joint gap is provided between both opposing ends.

  Further, the operation screw has a screw shaft portion formed on an upper portion of a support collar portion erected from a bracket attached to a building or the like, and both ends of the adjacent tubular headstock are connected and the connection portion. Is supported by the building or the like.

  Further, with respect to the set of the first connection member and the second connection member, the separate operation screw is attached to the separate through screw hole at each of the tubular headboards connected adjacently. Features.

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 adjacent tubular headboards 1 and 1 are made of a metal pipe such as a stainless steel pipe or a synthetic resin-coated steel pipe. The tubular headboards 1 and 1 are connected by a handrail headboard connecting device provided with a metal first connecting member 2, a second connecting member 3 and an operation screw 4. The first connecting member 2 includes an arcuate plate portion 6 having an outer surface of a dominant arc along the inner diameter of the tubular headboard 1,1 to be inserted, and continuous with both lower edge portions 5, 5 sandwiching the opening. Opposite wide inclined surfaces 7 and 7 are formed inside the lower edge portions 5 and 5 of the portion 6. Further, the top surface on the inner side of the arc-shaped plate portion 6, that is, the inner top surface 8 is flat, and thus the portion is thick. Next, the second connection member 3 has both wedge-shaped side surfaces 9 and 9 fitted to both the inclined surfaces 7 and 7 of the first connection member 2 and includes a through screw hole 10 penetrating in the vertical direction of the central portion. In the embodiment, both the wedge-shaped side surfaces 9 are formed below the second connecting member 3, and the through screw hole 10 is formed above, and the lower side of the through screw hole 10 is smaller than the diameter of the through screw hole 10. A thick enlarged hole 11 is drilled. The second connection member 3 is disposed between both inclined surfaces 7 and 7 of the first connection member 2. Further, the operation screw 4 is screwed into the through screw hole 10 of the second connection member 3 from the outside, and the tip 12 thereof abuts on the inner top surface 8 of the arc-shaped plate portion 6 of the first connection member 2. .

  In order to connect the tubular caps 1, 1, semicircular cutouts 13 that form circular holes at the time of connection for inserting and tightening the operation screws 4 are provided at the ends of the respective tubular caps 1. Then, both tubular caps 1 and 1 adjacent to the first connecting member 2 including the second connecting member 3 are inserted in the direction of the arrow in FIG. 1, and a joint gap 14 is formed between both ends as shown in FIG. The tubular headboards 1 and 1 are disposed. The joint gap 14 is effective to cope with the expansion and contraction of the tubular headboard 1 due to a temperature change after installation. The operation screw 4 is screwed into the through screw hole 10 of the second connection member 3 in advance, or is screwed and attached during connection work. Since the operation screw 4 is screwed into the through screw hole 10 of the second connection member 3 that is visible from the outside, the screwing is easy to tighten and the first connection member 2 is connected to the first connection member 2 when the screwing is started. Even when the two connecting members 3 are slightly displaced, there is no difficulty in screwing. When the tightening of the operating screw 4 is advanced, the tip 12 of the operating screw 4 eventually reaches the inner top surface 8 of the first connecting member 2, and the second connecting member 3 is pulled down by further tightening, and both the wedge-shaped side surfaces 9 thereof. , 9 press while sliding on both inclined surfaces 7, 7 of the first connecting member 2.

  By this pressing, the arc-shaped plate portion 6 of the first connecting member 2 is expanded and the outer surface is crimped to the inner surface of the tubular cap 1, and both the tubular caps 1, 1 have sufficient connection strength due to the frictional force caused by the pressing. Connected. According to the present invention, the range in which the second connecting member 3 can be moved downward with respect to the first connecting member 2 is set to be relatively large, so that the tightening movement distance can be increased, and the tubular headboard 1 by sufficient tightening. , 1 can be obtained. Moreover, 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. 1 has a sufficient connection strength so that it does not fall off or rattle. Furthermore, connection work is easy and no special skill is required. Moreover, 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 two operation screws 4 for connecting the tubular headboards 1 and 1 are used. In this case, two through screw holes 10 are formed in the lengthwise direction for screwing the operating screw 4 into the second connecting member 3, and a notch 13 is provided in the tubular headboard 1 for inserting and tightening the operating screw 4. Are provided in a circular shape on each tubular headboard 1. If two operation screws 4 are used, the stress due to each operation screw 4 is distributed and applied to the first connection member 2 and the second connection member 3, so that the deformation of these members becomes uniform, so that the tubular shape is obtained. It is possible to obtain a large frictional force with the headboard 1, and it is more effective when used at a connection location that requires a strong connection.

  5 and 6, the operation screw 4 has a support flange portion 17 that is erected with its lower end fitted into and fixed to the stepped vertical hole 16 at the tip of the bracket 15 attached to the building B. An example is shown in which a screw shaft portion is formed on the upper portion, both ends of adjacent tubular headboards 1 and 1 are connected, and this connection portion is supported by a building B or the like. In this case, the supporting screw part 17 of the operating screw 4 is provided with a fastening screw hole 19 on the lower end thereof, which is continuous with the polygonal hole 18 into which the polygonal wrench is fitted. The operating screw 4 is connected to the bracket 15 by inserting a polygonal wrench into the polygonal hole 18, and then the operating screw 4 is fastened to the bracket 15 by tightening the fixing screw 20 from the lower side to the fixing screw hole 19. Worn. Further, since the lower diameter of the stepped vertical hole 16 allows the polygonal wrench to pass through, turning the operating screw 4 for connecting the tubular headboards 1, 1 is performed by tightening the operating screw 4 to the stepped vertical hole 16 of the bracket 15. It is possible even in a state of being fitted to. Reference numeral 21 in the drawing denotes a covering member that covers the lower portion of the bracket 15. In the handrail headboard connecting device according to the present invention, when the tubular headboards 1 and 1 are connected by rotating and tightening the operation screw 4, the operation screw 4 and the tubular headboards 1 and 1 are relative to each other before and after the turning and tightening operation. The feature is that the height does not change. And since the relative height of the bracket 15 attached to the building B and the operation screw 4 does not change before and after the rotation tightening operation, both ends of the tubular caps 1 and 1 are set at every predetermined interval of the building B. When the connection parts are supported by the brackets 15 attached to the building B, the height of the tubular headboard 1 becomes constant with respect to the brackets 15 attached to a predetermined height. The whole does not cause unevenness in the vertical direction.

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 longitudinal cross-sectional view of the handrail Kasagi connection apparatus which uses two operation screws. It is a partially broken perspective view when a connection part is supported by a building or the like. It is a transverse cross section at the time of making a connection part support a building etc. It is a cross-sectional view of the improved device developed previously.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubular headboard 2 1st connection member 3 2nd connection member 4 Operation screw 5 Lower edge part 6 Arc-shaped board part 7 Inclined surface 8 Inner top surface 9 Wedge-shaped side surface 10 Through screw hole 12 Tip 14 Joint gap 15 Bracket 17 Support collar

Claims (5)

  In a handrail headboard connecting device to be inserted and attached to both opposite ends of adjacent tubular headboards, it has continuous outer surfaces along the inner diameter of the tubular headboard to be inserted and is connected to both lower edges of the wall sandwiching the opening. A first connection member having both inclined surfaces facing each other on the inner sides of the lower edge portions of the arc-shaped plate portion, and both wedge-shaped side surfaces fitted to the both inclined surfaces of the first connection member and the center A second connecting member provided with a through screw hole penetrating in the vertical direction and disposed between the inclined surfaces of the first connecting member, and screwed into the through screw hole of the second connecting member from the outside. And an operating screw whose tip is in contact with the top surface of the arc-shaped plate portion of the first connecting member. By tightening the operating screw, the both wedge-shaped side surfaces of the second connecting member are both of the first connecting member. A handrail characterized in that the arcuate plate portion of the first connection member is expanded by pressing an inclined surface. Tree connecting device.   The handrail headboard connecting apparatus according to claim 1, wherein the top surface of the arc-shaped plate portion of the first connecting member is formed in a flat shape.   The handrail headboard connecting apparatus according to claim 1 or 2, wherein the adjacent tubular headboards are connected in a state where a joint gap is provided between both opposing ends.   The operation screw has a screw shaft portion formed on an upper portion of a supporting collar portion erected from a bracket attached to a building or the like, and both ends of the adjacent tubular headstock are connected and the connection portion is The handrail headboard connecting device according to any one of claims 1 to 3, wherein the handrail headboard connecting device is supported by the building or the like.   With respect to the pair of the first connection member and the second connection member, the separate operation screws are attached to the separate through-thread holes at the locations of the tubular caps that are adjacently connected. The handrail head board connecting device according to any one of claims 1 to 3.

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