JP2020186767A - Intermediate joint - Google Patents

Abstract

To satisfy a requirement that, in order to manufacture a variety of kinds of assemblies such as a wisteria arbor and a flower table by using the same diameter/thickness steel pipes and joint components, the several pieces of steel pipes may be joined to one another in many cases; however, it becomes necessary to prepare an intermediate joint for use in the unification of the steel pipes by adding the several pieces of steel pipes, and in some cases, the unified intermediate joints may be removed and returned to original forms for the purpose of transport or the like, and therefore, there are required the intermediate joint which is easy in work for ladies and aged people.SOLUTION: For the unification of two pieces of steel pipes (20A, 20B) by matching them, it becomes necessary to prepare one piece of an intermediate joint (10A) which internally contacts with the two pieces of steel pipes (20A, 20B). In the intermediate joint (10A), it is necessary to coat a particular adhesive (11A) on a surface which is removal by imparting rotation forces to the two pieces of steel pipes, because it is necessary to return the two pieces of steel pipes (20A, 20B) to original forms for the purpose of transport or the like.SELECTED DRAWING: Figure 1-1

Description

In the present invention, two steel pipes having the same diameter and the same thickness (hereinafter referred to as two steel pipes to be joined) are joined by one inscribed steel pipe to an inscribed steel pipe intermediate joint and one externally fitted. It relates to one externally fitted plastic pipe intermediate joint that joins the two steel pipes with a plastic pipe.

Conventionally, in the intermediate joint of the internal steel pipe, the pipe connecting metal fitting 65 on page 38 of Yazaki Kako Co., Ltd. of Non-Patent Document 1 is driven into one of the two steel pipes to be joined, and then the other. Although it was driven into a steel pipe, it had a notch in the length direction, but there was a problem that it was difficult for women and elderly people to drive it. Furthermore, the same was true when removing the assembled product for moving. Further, conventionally, in the case of a bonded steel pipe in which two steel pipes are joined by the externally fitted plastic pipe, it is performed by J-23 or J23B on page 31, but in this case, it is performed by applying a permanent adhesive. , There was a problem that it could not be removed when moving. The present inventor has succeeded in improving each intermediate joint in order to solve the above problems and assemble various kits.

Yazaki Kako Co., Ltd. Elector DIY Handbook Page 31 J-23, J23B Page 38 Pipe Connecting Bracket 65 EF-1006 https://www.diy-life.net/wp/wp-content/uploads/2018/09/DE-185.pdf Henkel Japan Ltd. Loctite Instant Adhesive 425 http://www.orange-book.com/ja/c/products/index.html?itemCd=42520++++++++++++++++++ ++++++++ 8050

In the present invention, two steel pipes are combined and joined as one of the joint parts required for assembling or removing the wisteria trellis, the flower stand, the rim stand and the like via the steel pipe for assembly, the joint parts and the like. It provides an improved intermediate joint for making steel pipes.
The present invention also provides an improved intermediate joint that can be easily worked by women and the elderly.
Further, the present invention provides an improved intermediate joint that can be mass-produced and manufactured at low cost.

The intermediate joint made of an inscribed steel pipe of the present invention according to claim 1 is described above in order to join two steel pipes having the same diameter and the same thickness as shown in FIG. 1-1 in order to achieve the above object. One steel pipe (10A) inscribed in two steel pipes (20A, 20A) to be joined is slightly from the marked line (12A) drawn toward the tip of each so that it can be divided into two in the length direction. Each of the tapered inscribed steel pipes is tapered to the surface, and when it is inserted, an adhesive (11A) that can be removed by applying a rotational force is applied to the surface and inserted to join them. Is.
The intermediate joint (10B) made of an externally fitted plastic pipe according to claim 2 has two steel pipes (20B, 20B) having the same diameter and the same thickness, as shown in FIG. 2-1 in order to achieve the above object. One plastic pipe that is externally fitted to the two steel pipes to be joined, and after a thin screw (21B) is screwed into the middle point in the length direction, the two steel pipes to be joined are joined. (20B, 20B) is inserted, and mark lines (22B, 22B) are drawn on each end of the plastic pipe (10B), then taken out and one of the steel pipes to be joined (22B). An adhesive (23B) that can be removed by applying a rotational force is applied to the surface and inserted, and then the adhesive that can be removed by applying a rotational force to the mark line (22B) surface of the steel pipe to be joined. (23B) is applied so that it can be inserted, and two steel pipes to be joined are joined.
The intermediate joint (10C) made of an externally fitted plastic pipe according to claim 3 has two steel pipes (20C, 20C) having the same diameter and the same thickness, as shown in FIG. 3-1 in order to achieve the above-mentioned problems. One plastic pipe that is externally fitted to the two steel pipes to be joined, and the two steel pipes (20C, 20C) to be joined are inserted into the plastic pipe (10C). Draw a mark line (22C, 22C) on each end, take it out, and remove it by applying a rotational force to the surface from the mark line (22C) at the upper end to the mark line (22C) at the lower end. (23C) is applied and inserted to join two steel pipes to be joined.

In the present invention, in the intermediate joint of the internal steel pipe, two steel pipes (20A, 20A) to be joined are driven in without the need for difficulty, and after sandpaper is applied to each surface of the intermediate joint, ( All you have to do is apply adhesive to 10A1 and 10A1) and insert them. Also, when joining two steel pipes (20B, 20B) with a plastic pipe (10B), a thin screw that marks the middle point. Since (21B) has been struck, an adhesive that can be removed by applying a rotational force from there to the mark line (22B) is applied to the surface of one steel pipe (20B) and inserted, and then the other steel pipe (20B) is inserted. In addition, the adhesive may be applied to the surface and inserted, and the same work as in the case of conventional permanent bonding can be performed simply by applying a special adhesive, which has the advantage of being easy to work and has been improved. The intermediate joint has a great advantage that it is easy for women and elderly people to assemble or remove various kid's and move them. Further, in the intermediate joint of the outer fitting plastic pipe by the plastic pipe (10C), the two steel pipes (20C, 20C) to be joined are joined in close contact with each other, so that the load and other mechanical strength can be increased as the intermediate joint. It also adds the big advantage of being bigger.

It is explanatory drawing which showed the relationship between the inscribed intermediate joint made of steel and two steel pipes to be joined. It is explanatory drawing which showed the relationship between the outer fitting intermediate joint of a plastic pipe, and two steel pipes to be joined. It is explanatory drawing which showed the relationship between the outer fitting intermediate joint of a plastic pipe, and two steel pipes to be joined.

Embodiments of the present invention are described in Example 1, Example 2 and Example 3.

Example 1 is shown in FIG. 1-1. The first embodiment comprises an intermediate joint (10A) of an inscribed steel pipe.
The intermediate joint (10A) of the inscribed steel pipe is divided into two by a mark line (12A) drawn in the middle, and is formed into a slightly tapered shape (10A1, 10A1) toward each tip.
The two steel pipes (20A, 20A) to be joined are first coated with an adhesive (11A) that can be removed by rotation up to the mark line (12A) of one of the steel pipes (20A). Is inserted so as to be fitted on the outside, and then an adhesive that can be removed by rotation is applied to the surface of the other steel pipe (20A) to be joined and inserted so as to be fitted on the outside.
When taking out each of the joined steel pipes (20A) fitted onto the inscribed steel pipe (10A), hold the other joined steel pipe (20A) in your hand and apply a rotational force to one of the joined steel pipes (20A) to remove it. Then, when the other joined steel pipe (20A) is removed, it can be removed by applying a rotational force to the other joined steel pipe (20A) with the removed intermediate joint (10A1).

Example 2 is shown in FIG. 2-1. The second embodiment comprises an intermediate joint (10B) made of an externally fitted plastic pipe.
In the intermediate joint (10B) made of an externally fitted plastic pipe, two bonded steel pipes (20B, 20B) to be joined by a tapping screw (21B) screwed into the intermediate point are separated by the tapping screw (21B). Be joined. Further, each of the steel pipes (20B, 20B) to be joined has a mark line (22B) drawn along both ends of the outer fitting plastic pipe (10B). The surface of the steel pipes (20B, 20B) to be joined is coated with an adhesive that can be removed by applying a rotational force, and the plastic pipe is fitted on the outside.
When removing the joined steel pipes (20B, 20B), the plastic pipe can be removed by applying a rotational force to the joined steel pipes (20B, 20B).
Since the fine screw (21B) is between the joined steel pipes (20B, 20B) to be joined, each joined steel pipe (20B) can be easily inserted into the plastic pipe (10B), which is safe for the work of women and the elderly. You can give a feeling and perform bonding work.

Example 3 is shown in FIG. 3-1. Example 3 comprises an intermediate joint (10C) made of an externally fitted plastic pipe. The intermediate joint (10C) made of the outer-fitting plastic pipe is fitted onto the joined steel pipes (20C, 20C) to be joined in close contact with each other, and the joined steel pipe to be joined is drawn to fit the upper end of the plastic pipe. After the adhesive (23C), which can be removed by rotation, is applied to the surface between the mark line (22C) and the mark line (22C) of the joined steel pipe drawn along the lower end of the plastic pipe. The outer fitting plastic pipe (10C) is outer fitted.
Therefore, since the two joined steel pipes to be joined can be brought into close contact with each other, the load and other mechanical strengths are high. When removing the steel pipes (20C, 20C) to be joined, a rotational force may be applied to the outer-fitting plastic pipe or the inner-fitted joined steel pipe.

The present invention can be mass-produced and can be manufactured at low cost.

10A Internal steel intermediate joint 10A1 Tapered part of internal steel intermediate joint 11A Adhesive 12A Mark line 20A Joint steel pipe 10B Intermediate joint made of externally fitted plastic pipe 20B Joint steel pipe 21B Tapping screw 22B Joint steel pipe mark line 23B Adhesive 10C Intermediate joint made of externally fitted plastic pipe 20C Joint steel pipe 22C Mark line of joint steel pipe 23C Adhesive

Claims (3)

In order to join two steel pipes of the same diameter and thickness, one steel pipe (10A) inscribed in the two steel pipes (20A, 20A) to be joined is drawn so that it can be divided into two in the length direction. An adhesive (11A) that is slightly tapered from the mark line (12A) toward the respective tips and can be removed by applying a rotational force when each of the tapered inscribed steel pipes is inserted. An intermediate joint made of inscribed steel pipe, which is characterized by being applied to the surface and inserted to join. In order to join two steel pipes (20B, 20B) of the same diameter and the same thickness, it is one plastic pipe that fits outside the two steel pipes to be joined, and a thin screw ( After screwing in 21B), insert two steel pipes (20B, 20B) to be joined, draw mark lines (22B, 22B) at each end of the plastic pipe (10B), and then take out one by one. Then, an adhesive (23B) that can be removed by applying a rotational force is applied to the surface of the mark line (22B) of the steel pipe to be joined, and then inserted, and then the mark line (22B) of the steel pipe to be joined to the other. An intermediate joint made of an externally fitted plastic pipe characterized in that two steel pipes to be joined are joined by applying an adhesive (23B) that can be removed by applying a rotational force to the surface so that the two steel pipes can be joined. In order to join two steel pipes (20C, 20C) having the same diameter and the same thickness, one plastic pipe that is externally fitted to the two steel pipes to be joined, and the two steel pipes to be joined (20C, 20C, 20C) is inserted, marking lines (22C, 22C) are drawn on each end of the plastic pipe (10C), and the marking lines (22C, 22C) are taken out and taken out from the marking line (22C) at the upper end to the marking line (22C) at the lower end. ), An intermediate joint made of an externally fitted plastic pipe, which is characterized by applying an adhesive (23C) that can be removed by applying a rotational force to the surface and inserting it to join two steel pipes to be joined. ..

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