JPH058174U - Universal joint for pipe connection - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a universal joint capable of connecting a horizontal pipe to an opening at an upper end of a vertical pipe at an arbitrary inclination or horizontal rotation angle. [Structure] A spherical universal joint member slidably abutted on an annular opening at the upper end of a vertical pipe, and an arc-shaped notch is formed in a portion of the universal joint member not abutting the vertical pipe. The mold notch is formed corresponding to the size and shape of the outer surface of the horizontal pipe, and the outer surface of the horizontal pipe can be brought into close contact with the arc-shaped notch, and the universal joint member is brought into contact with the annular opening at the upper end of the vertical pipe. The feature is that the joint angle between the horizontal pipe and the vertical pipe can be adjusted by sliding the slide pipe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention allows the horizontal pipe to be connected to the opening at the upper end of the vertical pipe at any inclination or horizontal rotation angle. A universal joint that can

[0002]

[Prior art]

  As shown in FIGS. 1 and 2, the conventional method for connecting a horizontal pipe and a vertical pipe is as follows. A round hole 11 is formed in the horizontal pipe 10 by the rill 2, and the vertical pipe 3 is inserted into the circular hole 11 to 10 and the vertical pipe 3 are welded after adjusting the mounting inclination angle so as to have an appropriate positional relationship. It was something. These coupling methods have the following drawbacks.   1. Drilling holes on the wall surface of a tubular body requires a lot of skill. Often, the hole is bent or the tube is deformed.   2. In order to connect the horizontal pipe with the vertical pipe at an appropriate angle, the diameter of the circular hole 11 is 3 mm. Since it is necessary to be larger than the diameter of the welded portion 12, 12a, Therefore, the accuracy of the attachment angle between the vertical pipe and the horizontal pipe at the time of connection is reduced. Also, the weld The minutes 12 and 12a may be deformed in order to adjust the inclination angle accurately.   3. It takes a lot of time and labor to connect the vertical and horizontal pipes, and the fine adjustment Also requires a high degree of skill.   As shown in FIG. 3, another conventional method of connecting a horizontal pipe and a vertical pipe is as follows. First, the upper end of the vertical pipe 3 is cut at an appropriate inclination angle, that is, 3a is cut off, and The arc-shaped concave portions 3b and 3c are dug out at the top of the vertical pipe 3, and the horizontal pipe is formed into the arc-shaped concave portion It is to be fixed by welding after being connected to the recesses 3b and 3c in an inclined shape. Similar to the above, this connection method is also difficult to construct and requires a lot of time and labor. There was a drawback that

[0003]

[Problems to be solved by the device]

  The object of the present invention is to make it easy to perform on-site construction without requiring a skilled person, and The purpose of the present invention is to provide a universal joint for pipe connection that can be easily adjusted.

[0004]

[Means for Solving the Problems]

  For this reason, in the present invention, a universal joint member having a spherical shape is used, which is slidably slidable. Arc-shaped notch in a portion of the universal joint member that does not abut the vertical pipe. This arc-shaped cutout is formed to correspond to the size and shape of the outer surface of the horizontal pipe. , The outer surface of the horizontal pipe can be brought into close contact with the arc-shaped notch, and the universal joint member is connected to the ring at the upper end of the vertical pipe. The coupling angle between the horizontal and vertical pipes is adjusted by sliding at the abutting position of the circular opening. A universal joint for pipe connection that can be used as a means for solving the problem. It

[0005]

[Action]

  The present invention mounts a spherical universal joint member on the annular opening at the upper end of the vertical pipe, Abutting the horizontal pipe of the arc-shaped cutout of the material, the universal joint member and the vertical pipe and the horizontal pipe Since the mutual positional relationship can be freely changed, the crossing angle between the horizontal pipe and the vertical pipe cannot be adjusted. If it becomes extremely easy and the desired connection angle is obtained, then by appropriate means It is fixed in order to keep the positional relationship stable.

[0006]

【Example】

  Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to FIGS. Obviously, these descriptions do not limit the scope of the invention.   4 and 5 show the joint structure of the horizontal pipe and the vertical pipe of the universal joint using the present invention. Therefore, the horizontal pipe 10 is connected to the upper end of the vertical pipe 30 in a T shape by the universal joint member 20, The universal joint member 20 has a spherical shape as shown in FIG. Slidably abuts the annular opening 31 at the upper end of the vertical pipe 30, and the upper end thereof has an arc shape. A notch 21 is formed, and the inside of the arc-shaped notch 21 is a hollow portion 22. The outer surfaces of 10 are configured to be in close contact with each other.

[0007]   FIG. 7 shows a universal joint member 20 manufactured according to another preferred embodiment of the present invention. Therefore, the inside of the arc-shaped notch 21 is a solid portion. Moreover, in FIG. 4 and a solid vertical tube 30 different from the hollow vertical tube 30 of FIG. An annular opening 31 is formed at an end of the universal joint member 20 so that it can slide. It comes in contact with 200.

[0008]   In the T-shaped pipe joint structure shown in FIGS. 4 and 5, the universal joint member 20 is connected to the vertical pipe 30. By sliding at the contact position of the annular opening 31 at the upper end, the horizontal pipe 10 and the vertical pipe 30 The coupling angle of can be freely adjusted. For example, FIG. 8 and FIG. It shows a case where the pipe is connected to the vertical pipe 30 at a certain inclination angle. If you want to connect the horizontal plane (H) with the desired crossing angle, depending on the selected material, , Can be fixed by the following method.

[0009]   a) If the horizontal pipe 10, the universal joint member 20 and the vertical pipe 30 are all made of metal, A connecting peripheral portion 22a between the horizontal pipe 10 and the universal joint member 20, and the universal joint member 20. The connection peripheral portion 32 between the pipe and the vertical pipe 30 can be welded.   b) If all of the materials in a) above are synthetic resins, use an adhesive or ultrasonic bond. The bonding peripheral parts 22a and 32 can be adhered by a bonding technique.   c) If the material in a) above is all wood, glue, nails or other known material. Fixing and joining the above-mentioned joining peripheral parts 22a and 32 by the method of joining means. You can   FIG. 10 shows an example of a stair handrail structure using the universal joint member 20 of the present invention. Each of the reference numerals in the figure uses similar parts corresponding to the parts in the above description. It is shown that.

[0010]

[Effect of device]

  Therefore, the present invention has the following advantages over the prior art. 1) The assembly work at the site is quicker and the horizontal pipes and vertical pipes are not required even by a skilled worker. The coupling angle between the tubes can be easily and arbitrarily adjusted. 2) There is no need to drill or cut a horizontal pipe or vertical pipe, and the shape of a horizontal pipe or vertical pipe Destruction of shape or appearance is avoided.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a circular hole is formed in a horizontal pipe by a drill in a conventional technique.

FIG. 2 is a front view showing a state in which a vertical pipe is connected to the horizontal pipe in FIG.

FIG. 3 is a front view of another coupling means in the prior art.

FIG. 4 is a front view showing a connecting structure between pipes using a preferred embodiment according to the present invention.

FIG. 5 is a side view of the same.

FIG. 6 is a perspective view of a universal joint member 20.

FIG. 7 is an exploded perspective view showing a state in which a universal joint member 20 and a vertical pipe 30 according to another preferred embodiment of the present invention are connected.

FIG. 8 is a perspective view showing a state in which the vertical pipe 30 and the horizontal pipe 10 are connected at a certain inclination angle.

FIG. 9 is a perspective view showing a state in which the tilt angles of FIG. 8 are changed and coupled.

FIG. 10 is a perspective view of a stair handrail structure using the universal joint of the present invention.

[Explanation of symbols]

3 vertical tubes 3a Excision site 3b, 3c Arc-shaped recess of vertical pipe 10 Horizontal pipe 11 circular holes 12, 12a Welded part 20 Universal joint member 21 Circular notch of universal joint member 22 Hollow part 22a binding peripheral site 30 vertical tubes 31 annular opening 32 Peripheral site 100 Horizontal tube axis 200 Spherical outer surface of universal joint member

Claims (2)

[Scope of utility model registration request] 1. A universal joint member having a spherical shape, slidably abutting against an annular opening at the upper end of a vertical pipe, and forming an arc-shaped notch in a portion of the universal joint member not abutting the vertical pipe, The arc-shaped cutout is formed in correspondence with the size and shape of the outer surface of the horizontal pipe, and the outer surface of the horizontal pipe can be brought into close contact with the arc-shaped cutout so that the universal joint member contacts the annular opening at the upper end of the vertical pipe. A universal joint for pipe coupling, characterized in that the coupling angle between the horizontal pipe and the vertical pipe can be adjusted by sliding at the contact position. 2. The universal joint according to claim 1, wherein the spherical universal joint member has a hollow spherical shape.