JP3807701B2 - Joint for connection and connection structure using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection joint that is suitably used for connecting a body edge such as a handrail and a fence, and a horizontal rail, and a connection structure using the joint.
[0002]
[Prior art]
Conventionally, when handrails, fences, and other body edges and horizontal rails are bent in the horizontal direction, or additionally installed with a change in the height direction, a single handrail supported by two struts Place the rims and side rails such as rails and fences little by little at different angles in the plane and height directions, or at each connection point at the connection points of the trunk edges and side rails such as handrails and fences. It is cumbersome to prepare various types of dedicated joints. Although a universal joint has been proposed as a method for solving these drawbacks, as shown in, for example, Japanese Patent Application Laid-Open No. 8-120869, a complicated structure and a large number of parts make the assembly complicated and troublesome. Therefore, there has been a demand for a joint for connecting a body edge such as a handrail or a rail, a cross rail, and a connecting structure thereof that are easier to use and functional.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the problems of the prior art, and can be arranged by bending in the horizontal direction, as well as when installing trunk edges and horizontal rails such as handrails and fences in a straight line. Even when changing the height direction, it is possible to respond to changes in the angle of the plane and height in the installation site on the spot, and to prepare special parts depending on the installation angle, etc. There are provided a joint for a trunk edge and a horizontal rail such as a handrail and a fence, which are configured by a small number of parts, and a connection structure of the handrail and the fence using the joint.
[0004]
[Means for Solving the Problems]
The connection joint according to the present invention is a connection joint for a body edge or a horizontal rail such as a handrail or a fence, and includes two split joints combined by a connecting shaft, and a horizontal joint connected to the split joint by a connecting bolt. The two split joints have a joint base that forms a facing part that faces each other so as to be rotatable around the connecting shaft, and a protruding part that protrudes from one end of the joint base. The facing portion is a front end surface of a cylinder that forms a shaft hole through which the connecting shaft is inserted, the projecting portions straddle each other on the outer surface of another split joint, and the projecting portion includes the connecting bolt Screw holes are respectively engraved, and when the two split joints are rotated around the connecting shaft and the respective protrusions are positioned in opposite directions, the respective screw holes are coaxial. The horizontal rail connecting cylinder is composed of a connecting cylinder part and a connecting part, and the connecting cylinder part is a connecting bolt. The shaft is pivotally inserted into the projecting part, and the connecting part is inserted or externally fitted with a body edge such as a handrail or a fence, or a horizontal rail, and the two split joints are rotated and split. The joints between the joint and the crosspiece connecting tube are rotated at right angles to each other , and in the facing parts of the two split joints, an arc-shaped long groove centering on the connecting shaft is provided on the facing part of one split joint. And a pin-like protrusion to be inserted into the long groove is provided on the facing portion of the other split joint, and when the two split joints are rotated around the connecting shaft, the pin is inserted into the long groove. The rotation angle of the two split joints is regulated by the movement of the projections .
The connection structure in this invention refers to what is comprised by connecting a trunk edge and a crosspiece through the said coupling.
[0005]
Further, in the joint for connection according to the present invention, two split joints are formed in the same shape.
[0006]
Furthermore, the joint for connection according to the present invention is such that one of the two split joints is fixed to the support via the connector.
[0007]
Furthermore, the connection joint of the present invention is such that a connection hole is provided in the connection portion of the crosspiece connecting tube.
[0008]
Furthermore, the joint for connection according to the present invention is such that an insert block having a diameter slightly smaller than the inner diameter of the connecting cylinder is provided inside the connecting portion of the horizontal rail connecting cylinder.
[0009]
Furthermore, in the joint for connecting according to the present invention, the insert block is rotatably fixed via a connecting bolt for connecting the horizontal beam connecting cylinder to the protruding portion of the split joint, and between the inner wall of the horizontal beam connecting cylinder and the outer wall of the insert block. A through hole is provided at the end of the horizontal rail such as a tubular handrail or a fence that is inserted into the groove, and a groove portion that is opposed to the through hole is drilled in the circumferential direction of the outer wall of the insert block. The connection hole is aligned with the groove.
[0010]
Furthermore, the connection structure of the present invention comprises two split joints connected by a connecting shaft, and a horizontal beam connecting tube connected to the split joint by a connecting bolt, and the two split joints are centered on the connecting shaft. Each of which has a joint base that forms a face-to-face portion that faces each other in a rotatable manner, and a protrusion that protrudes at one end of the joint base, and a screw hole into which the connecting bolt is screwed. The horizontal rail connecting cylinder is composed of a connecting part and a connecting part, and the connecting cylinder part is fitted into the protruding part so as to be rotatable about the connecting bolt as an axis, and the connecting part has a trunk edge such as a handrail or a fence. In addition, the rails such as individual handrails and fences are connected so as to be rotatable in the horizontal and vertical directions by connecting joints that are fitted inside or outside.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of an embodiment of the connection joint of the present invention, and FIG. 2 is an exploded cross-sectional view of FIG.
[0012]
In FIG. 1, reference numeral 1 denotes a split joint, and the split joint 1 includes a hemispherical joint base 10 and a protruding portion 11 that protrudes from one end of the joint base 10. A shaft hole 16 is formed in the joint base 10 along the rotation axis, and a facing portion 13 disposed on the concentric circle of the shaft hole 16 is formed on the cut surface. Further, a screw hole 12 having the same direction as the protruding direction is formed in the protruding portion 11. Further, two of the split joints 1 are brought into contact with the respective facing portions 13, and the connecting shaft 5 is inserted into the shaft hole 16 so as to be freely rotatable. In addition, it is preferable that the protrusion part 11 protruded at one end of the joint base 10 is coaxial when the two split joints 1 are combined and positioned in opposite directions.
[0013]
In FIG. 1 and FIG. 2, two facing portions 13 of the split joint 1 are formed on the concentric circle development, but may be one or three or more, and they are continuous on the concentric circle development. May also be divided. Furthermore, the surface of the facing portion 13 may be smooth or may have fine irregularities.
[0014]
The split joint 1 is made of a metal such as aluminum or zinc or a reinforced plastic such as engineering plastic.
[0015]
On the other hand, when the split joint 1 and the crosspiece connecting cylinder 2 are combined, the length of the leading end of the protruding portion 11 does not protrude into the connecting portion 22 from the connecting cylinder portion 21 of the horizontal connecting pipe 2. When the connecting bolt 6 is screwed into the screw hole 12, the connecting cylinder portion 21 is fixed between the bolt head 62 of the connecting bolt 6 and the joint base 10, and the tip of the protruding portion 11 is connected to the horizontal beam connecting cylinder. When the length is made to project into the connecting portion 22 from the two connecting tube portions 21, the connecting tube portion 21 of the crosspiece connecting tube 2 is connected to the joint base 10 even if the connecting bolt 6 is screwed into the screw hole 12. It can be turned without being fixed.
[0016]
Also, the material of the horizontal beam connecting cylinder 2 is made of a metal such as aluminum or zinc or a reinforced plastic such as an engineering plastic as in the case of the split joint 1.
[0017]
Further, with respect to the split joint 1, as shown in FIGS. 3 (a) to 3 (c), the pin-shaped protrusion 14 and the connecting shaft 5 of the split joint 1 are centered on the facing portions 13 of the two split joints 1, for example. An arc-shaped long groove 15 is provided, and when the split joints 1 are combined with each other and the pin-shaped protrusion 14 and the arc-shaped long groove 15 are combined with each other, as shown in FIG. The rotation angle of the two split joints 1 may be restricted by the above, and in this case, the two split joints 1 are rotated during transportation of the assembled joint of the present invention, and the horizontal beam connecting cylinders 2 are connected to each other. Is preferable to avoid contact and scratching.
[0018]
In the joint according to the present invention, the angle in the horizontal direction around the connecting shaft 5 of the projecting portion 11, that is, the angle formed by the trunk edges of the two handrails, fences, etc. and the horizontal beam also depends on the shape of the horizontal beam connecting cylinder 2. Is in the range of approximately 80 ° to 280 °.
[0019]
Next, the use state of the joint of the present invention will be described with reference to FIGS.
FIG. 4A is an example in which the crosspiece 4 is externally fitted and connected to the horizontal crosspiece connecting tube 2, and the connecting hole 23 in which a female screw is engraved in the connection portion 22 of the horizontal crosspiece connecting tube 2 is shown. 4 (a) and 4 (c) show the state in which the crosspiece 4 is placed inside the connection portion 22 of the horizontal crosspiece connecting cylinder 2. FIG. (B) is an example of connecting the upper end of the crosspiece 4 by inserting a crimping screw 71 into the end of the crosspiece 4 from the connection hole 23 in which the female screw is engraved. (C) is an example in which a wooden screw 74 is screwed into the end portion of the crosspiece 4 through the connecting hole 23 provided in the connecting portion 22 and fixed. is there.
[0020]
As described in detail above, the connecting joint of the present invention is applied since the rotation of the split joint 1 itself and the rotation at the connecting portion of the split joint 1 and the crosspiece connecting tube 2 are made orthogonal to each other. The structures such as the handrails and the fences can be freely adapted to changes in the horizontal direction and the height direction, and can be installed even at a curve point of a climbing slope as shown in FIG.
[0021]
By the way, although the example in which the two split joints combined by the connecting shaft are the same in FIGS. 1 to 4 has been described, the two split joints may have different shapes. 6 and FIG.
[0022]
FIG. 6 is an exploded sectional view showing another embodiment of the connection joint of the present invention, and FIG. 7 is a partial perspective view of a handrail or fence structure using the connection joint of FIG.
In FIG. 6, the lower split joint 1a of the two split joints has a connection surface 92 formed to be fixed to the connection surface 93 of the connector 91, and joins the split joints 1 and 1a. The lower end of the connecting shaft 5 is extended to the nut hole 94 provided in the connecting tool 91, and the two split joints 1, 1 a and the connecting tool 91 are attached by the single connecting shaft 5. Further, the connection tool 91 is fixed to the bracket 96 via a hinge bolt 95, and the bracket 96 is fixed by a mounting bolt 97 that penetrates the support column 8.
[0023]
In the structure such as the handrail 7 fence shown in FIG. 7 assembled in this way, the horizontal bending corresponds to the rotation of the two split joints, and the rotation of the bracket 96 and the connecting tool 91 against the gradient. It has a structure that can respond to movement.
[0024]
Next, still another embodiment of the joint for connection according to the present invention will be described with reference to FIGS. FIG. 8 is an exploded perspective view showing the component structure, FIG. 9 is an exploded sectional view showing the component structure, and FIG. 10 is an assembled sectional view.
[0025]
In this embodiment, the insert block 3 is interposed between the bolt head 62 of the connecting bolt 61 screwed into the screw hole 12 carved in the protrusion 11 of the split joint 1 and the protrusion end 17 of the protrusion 11. The connecting bolt 61 passing through the block through-hole 32 provided at the center of the insert block 3 is fastened and fixed so that the protruding portion 11 of the split joint 1 and the insert block 3 are integrally formed. It is what I did.
[0026]
Accordingly, in the state in which the body edge such as a handrail or a fence or the horizontal beam, here the tubular beam 4 is inserted into the connecting portion 22 of the horizontal beam connecting tube 2, the beam 4 and the horizontal beam connecting tube 2 are connected to the connecting bolt 61. It can be rotated as an axis, so that at the assembly stage, the split joints 1 and 1 and the crosspiece 4 of the connection joint are rotated in accordance with the installation conditions in the horizontal and height directions of the connection structure of the connection joint. Make fine adjustments.
[0027]
In addition, a through hole 41 is provided in the vicinity of the end of the tubular crosspiece 4, a circumferential groove 31 is excavated in the insert block 3 so as to be opposed to the throughhole 41, and a side face of the horizontal crosspiece connecting tube 2 is provided. A connection hole 23 that is a screw hole that matches the position of the groove portion 31 is formed, and a set screw 72 is screwed into the connection hole 23 so as to be pressed and fixed to the groove portion 31 of the insert block 3 to be fixed after fine adjustment. In some cases, the crosspiece 4 is fixed by screwing a crimping screw 71 into the pipe wall of the crosspiece 4 opposite to the through-hole 41 of the crosspiece 4 from the connection hole 23 to press and fix it. The structure is such that it can be fixed in a well-balanced manner on the inner side of the horizontal beam connecting cylinder 2.
[0028]
【The invention's effect】
The joint for connection of the present invention exhibits the following effects by the above-described structure.
That is, the joint for connection according to the present invention is a joint for connecting a trunk edge or a horizontal rail such as a handrail or a fence , and includes two split joints combined by a connecting shaft, and a horizontal joint connected to the split joint by a connecting bolt. The two split joints have a joint base that forms a facing part that faces each other so as to be rotatable around the connecting shaft, and a protruding part that protrudes from one end of the joint base. The facing portion is a front end surface of a cylinder that forms a shaft hole through which the connecting shaft is inserted, the projecting portions straddle each other on the outer surface of another split joint, and the projecting portion includes the connecting bolt Screw holes are respectively engraved, and when the two split joints are rotated around the connecting shaft and the respective protrusions are positioned in opposite directions, the respective screw holes are coaxial. The horizontal beam connecting cylinder is composed of a connecting cylinder part and a connecting part. It is inserted into the projecting part so as to be rotatable around the center of the shaft, and the connecting part is inserted or externally fitted with a body edge such as a handrail or a fence, or a horizontal rail, and the two split joints are rotated. Since the rotation at the connecting portion of the split joint and the crosspiece connecting cylinder is made orthogonal to each other, each protruding portion protruding from the assembled split joint is rotated so that the angle can be adjusted. In addition, since the projections and the horizontal beam connecting cylinders into which they are inserted can be rotated in the direction perpendicular to the rotation of the split joints, the trunk edges and horizontal beams such as handrails and fences are installed in a straight line. In addition, it can be bent in the horizontal direction, and in addition, a change in gradient in the height direction can be freely made, and the number of parts is reduced, and the number of assembly steps can be reduced.
[0029]
Further, when the two split joints have the same shape, the connecting joint of the present invention has a reduced number of parts, is easy to assemble, and has a simpler appearance.
[0030]
Furthermore, when one of the two split joints is fixed to the support post via the connector, the connection joint according to the present invention can be used in a portion where the body edge such as a handrail or a fence or a side rail is fixed to the support post. By connecting the beams, the force transmitted from the horizontal beam to the connecting portion can be directly transmitted to the support column.
[0031]
Furthermore, in the joint for connecting according to the present invention, when a connection hole is provided in the connecting portion of the horizontal beam connecting cylinder, the horizontal beam is connected to the horizontal beam connecting cylinder when the body edge such as a handrail or a fence or the horizontal beam is connected. The horizontal rail is fixed by screws through the connection holes so that the connection portion does not rattle or rotate after installation, and a firm connection is made.
[0032]
Furthermore, in the joint for connecting according to the present invention, when an insert block having a diameter slightly smaller than the inner diameter of the connecting portion is provided inside the connecting portion of the horizontal beam connecting cylinder, Is firmly connected to the joint body through the insert block, so that a firm connection can be made.
[0033]
Furthermore, in the joint for connecting according to the present invention, the insert block is rotatably fixed via a connecting bolt for connecting the horizontal beam connecting cylinder to the protruding portion of the split joint, and between the inner wall of the horizontal beam connecting cylinder and the outer wall of the insert block. Through-holes are provided at the ends of the tubular handrails and horizontal rails to be inserted, and a groove portion corresponding to the through-hole is excavated in the circumferential direction of the outer wall of the insert block, and the connection hole of the horizontal rail connecting cylinder is the groove portion. When it is provided in alignment with the side rail, it inserts a barrel edge such as a tubular handrail or a fence or a horizontal beam, and reliably transmits the force applied to the horizontal beam to the joint body via the insert block. A crimping screw is pressed from the connection hole of the tube to the body edge of the tubular handrail or fence and the side of the horizontal beam to secure the horizontal beam, and a set screw is installed from the connection hole of the horizontal beam connection cylinder. Screwed into the end of a tubular handrail or side rail By pressing and fixing to the groove excavated in the insert block through the through-hole, the insert block and the rim of the handrail, fence, etc. and the side rail are fixed integrally, and the structure does not rattle and rotates after installation. A secure connection joint is constructed that does not break.
[0034]
Furthermore, the connection structure of the present invention comprises two split joints joined by a connecting shaft, and a horizontal beam connecting tube connected to the split joint by a connecting bolt. The two split joints are centered on the connecting shaft. Each of the joint bases has a joint base that forms a facing part that faces each other in a rotatable manner, and a projecting part that projects from one end of the joint base, and a screw hole into which the connecting bolt is screwed is formed in the projecting part. The horizontal crosspiece connecting tube is composed of a connecting tube portion and a connecting portion, and the connecting tube portion is fitted into the protruding portion so as to be rotatable about the connecting bolt as an axis, and the connecting portion is connected to the trunk edge or the side of a handrail or a fence. When the crosspieces such as handrails and fences are connected in a horizontal and vertical direction by connecting joints that are designed to be inserted or externally fitted to the crosspieces, Needless to say, when installing the edges and crosspieces in a straight line, the horizontal bending and the height direction Even if it is intended to be installed in response to a change in size, it can be installed while adjusting the angle using the same parts, so it is possible to install handrails and fence joints that can respond flexibly to changes in the plane and height direction with a small number of parts. It can be supplied and can respond to the installation conditions such as the plane in the installation site and the angle in the height direction on the spot.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is an exploded sectional view showing an embodiment of the present invention.
FIGS. 3A and 3B are explanatory views of an embodiment of the present invention, in which FIG. 3A is a perspective view of components, FIG. 3B is an operation explanatory view, and FIG.
FIGS. 4A and 4B are cross-sectional views according to an embodiment of the present invention, where FIG. 4A shows fixing of a tubular bar, and FIGS. 4B and 4C show different embodiments.
FIG. 5 is a perspective view of a handrail structure installed by applying the present invention.
FIG. 6 is an exploded sectional view showing another embodiment of the present invention.
7 is a partial perspective view showing an installation state of the embodiment of FIG. 6. FIG.
FIG. 8 is an exploded perspective view showing a component structure according to another embodiment of the present invention.
9 is an exploded cross-sectional view showing a component configuration of another embodiment shown in FIG.
10 is an assembled cross-sectional view of another embodiment shown in FIG. 8. FIG.
[Explanation of symbols]
1, 1a Split joint 10 Joint base body 11 Protruding part 12 Screw hole 13 Face part 14 Pin-like projection 15 Long groove 16 Axle hole 2 Crosspiece connecting cylinder 21 Connecting cylinder part 22 Connecting part 23 Connecting hole 3 Insert block 31 Groove part 32 Block through hole 4 Crosspiece 41 Through-hole 5 Connecting shaft 6, 61 Connecting bolt 62 Bolt head 71 Crimp screw 72 Set screw 8 Post 91 Connecting tool 92, 93 Connecting surface 94 Nut hole 95 Hinge bolt 96 Bracket 97 Mounting bolt

Claims (7)

It is a joint for connecting body edges and horizontal bars, such as handrails and fences, and consists of two split joints combined by a connecting shaft and a horizontal bar connecting cylinder connected to the split joint by a connecting bolt. The split joint has a joint base that forms a facing portion that faces each other in a rotatable manner around the connecting shaft, and a protruding portion that protrudes from one end of the joint base, and the connecting shaft is inserted through the facing portion. A cylindrical hole that forms a shaft hole in the center, the projecting portions straddling each other on the outer surface of another split joint, and the projecting portions have screw holes into which the connecting bolts are screwed, respectively. When the two split joints are rotated around the connecting shaft and the projections are positioned in opposite directions, the screw holes are coaxial, and the crosspiece connecting cylinder is the connecting cylinder. The connecting cylinder part is pivotable with the connecting bolt as the axis. The connecting part is inserted or externally fitted with a body edge such as a handrail or a fence, and a horizontal beam, and the two split joints rotate and the connection part between the split joint and the horizontal beam connecting tube Are rotated at right angles to each other . Further, in the facing portions of the two split joints, an arc-shaped long groove centering on the connecting shaft is provided on the facing portion of one split joint and the other split joint has The facing portion is provided with a pin-like protrusion to be inserted into the long groove, and when the two split joints are rotated about the connecting shaft, the pin-like protrusion moves in the long groove, thereby 2 A joint for connection, characterized in that the rotation angle of each split joint is regulated .   The connecting joint according to claim 1, wherein the two split joints have the same shape.   The connection joint according to claim 1, wherein one of the two split joints is fixed to the support post via a connector.   The connection joint according to claim 1, wherein a connection hole is provided in a connection portion of the crosspiece connecting tube.   The connection joint according to claim 1, 2, 3, or 4, wherein an insert block having a diameter slightly smaller than the inner diameter of the connection portion is provided inside the connection portion of the crosspiece connecting tube.   It is a joint for connecting body edges and horizontal bars, such as handrails and fences, and consists of two split joints combined by a connecting shaft and a horizontal bar connecting cylinder connected to the split joint by a connecting bolt. Each of the split joints has a joint base that forms a facing portion that faces each other in a rotatable manner around the connecting shaft, and a protruding portion that protrudes from one end of the joint base. The screw hole to be screwed is engraved, and the crosspiece connecting tube is composed of a connecting tube portion and a connecting portion, and the connecting tube portion is fitted into the protruding portion so as to be rotatable about the connecting bolt as an axis, and is connected to the connecting portion. Is a connecting joint that is inserted or externally fitted to the body edge or horizontal rail of a handrail or fence, and is slightly smaller in diameter than the inner diameter of the connecting portion inside the connecting portion of the horizontal rail connecting tube. Insert block, and through a connecting bolt that connects the crosspiece connecting cylinder to the projection of the split joint The insert block is pivotally fixed, and a tubular handrail inserted between the inner wall of the horizontal beam connecting cylinder and the outer wall of the insert block, and a through hole is provided at the end of the horizontal beam, and the insert block outer wall circumferential direction The connecting joint is characterized in that a groove portion opposed to the through hole is excavated and the connecting hole of the crosspiece connecting tube is aligned with the groove portion.   The connection structure according to any one of claims 1 to 6, wherein a crosspiece such as an individual handrail or a fence is rotatably connected in a horizontal and vertical direction by the connection joint according to any one of claims 1 to 6.

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