JP2008014132A - Pipe coupling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To firmly connect a pipe material, while providing a beautiful appearance. <P>SOLUTION: This pipe coupling is integrated by fitting a separate pipe material to an out-fitting part 3 in a state of fitting divided bodies by sandwiching the pipe material in an inner-fitting part 19, by dividing a coupling body 1 into the two divided bodies 1a and 1b so as to respectively include the out-fitting part 3 and the inner-fitting part 19 by a half, by arranging the cylindrical out-fitting part 3 of fitting the pipe material to the outside and the cylindrical inner-fitting part 19 of fitting the pipe material to the inside, in the coupling body 1. In a mating part of the out-fitting part 3 of the two divided bodies, a recessed part 24 is formed in one divided body, and a projection part 24 is formed in the other divided body, and the pipe material is fitted to the outside in a state of fitting the recessed part 24 and the projection part 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pipe joint for connecting pipe materials constituting a temporary scaffold, a fence, a shelf, and the like.

Conventionally, a pipe joint has a push-button, an arm, and a lock part at the center of the joint single pipe to form a joint body, and the spring is engaged and pushed up. One of the lock parts is one of the joint single pipe. Insert into the hole and the other into the other hole of the joint single pipe. When connecting, simply insert the single pipe, and when disconnecting, simply push the push button to connect and disconnect. (See, for example, Patent Document 1).
JP-A-9-242331

  However, in the pipe joint, the lower end of the single pipe is pivotally attached to the single pipe, and the outer end of the arm is connected to the middle of the lock member that protrudes slightly beyond the window hole provided in the single pipe. The inner end is provided with a lock and release mechanism that pushes up with a spring and pushes down with a push button. It has many parts and is not easy to assemble. There is a problem that is not popular.

  Furthermore, as for the conventional pipe joint, the thing made from a metal was manufactured by casting, and the thing of a synthetic resin was manufactured by integral molding. However, castings are excellent in strength but expensive, and resin moldings are inexpensive but inferior in strength. When connecting metal pipes, castings have to be used, so the whole has to be expensive.

  In addition, most of the pipe fittings are of the internal fitting type in which the pipe material is inserted and joined, but in such a configuration, only the pipe fitting is thick and large, so it is easy to notice and the pipe material is assembled via the pipe fitting. When the shelves and the like are completed, there is a problem that the pipe joint gives a feeling of unevenness and the overall appearance is impaired.

  This invention makes it the subject to provide the pipe joint which can connect a pipe material firmly.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a cylindrical outer fitting portion that fits the pipe material outside and a cylindrical inner fitting portion that fits the pipe material inside inside the joint body. The joint body is divided into two divided bodies so that each of the outer fitting part and the inner fitting part is included in half, and the divided body is put in the inner fitting part with a pipe member sandwiched between them. A pipe joint that is integrated by fitting another pipe material to the fitting portion, and has a concave portion in one divided body and a convex portion in the other divided body at the joint of the outer fitting portions of the two divided bodies. The tube material is fitted to the outside in a state where the portion is formed and the concave portion and the convex portion are fitted together.

  According to a second aspect of the present invention, in the first aspect, the outer fitting portion is provided with a retaining member made of a spring material, one end of the retaining member is fixed to one wall of the outer fitting portion, and the other end is secured. It is made to project slightly outward from the window hole provided on the other wall, and a recess is formed in the inner surface of the inner fitting part. The recess is made of a spring material, and both ends have a C shape. When a member is provided, the tips of both ends of the retaining member are protruded to the extent that they hit the surface of the fitted tube sandwiched between the inner fitting parts, and the pipe material is fitted to the outer fitting part and the inner fitting part The tip of each retaining member engages the surface of the tube material and cannot be pulled out, and when the pipe member is pulled while turning left and right, the retaining member slides and the tube material can be pulled out from the outer fitting portion. And

  The invention according to claim 3 is characterized in that, in claim 1 or 2, a step corresponding to the thickness of the tube material is formed between the inner fitting portion and the outer fitting portion.

  According to the first aspect of the present invention, the joint body is provided with a cylindrical outer fitting portion for fitting the pipe material to the outside and a cylindrical inner fitting portion for fitting the pipe material to the inside, and the fitting main body is The outer fitting portion and the inner fitting portion are divided into two divided bodies so as to include half each, and the divided body is separated from the outer fitting portion in a state in which a pipe material is sandwiched between the inner fitting portions. Since it is a pipe joint that integrates by fitting the pipe material, when the pipe material is sandwiched between the inner fitting parts of the two split bodies, the inner fitting part is formed by combining the inner fitting parts, and the pipe material is fitted. Since the outer fitting portion is formed by combining the outer fitting portions, if the pipe material is fitted to the outer fitting portion, the divided body is integrated by the pipe material fitted to the outer fitting portion. No means for joining the splits is necessary.

  In addition, at the joint of the outer fitting portions of the two divided bodies, a concave portion is formed in one divided body, and a convex portion is formed in the other divided body. Therefore, when a bending load is applied to the pipe member fitted to the outer fitting portion in a direction perpendicular to the joint, a shift occurs in the joint of the outer fitting portion of the divided body. However, since the concave portion and the convex portion are fitted in the joint, the shift is unlikely to occur. Therefore, even if a bending load is applied in the above direction, it is very difficult to bend, so that the pipe can be supported with high strength.

  According to the second aspect of the present invention, the joint body is divided and formed into two divided bodies having an outer fitting portion and an inner fitting portion of the pipe material, and the outer fitting portion and the inner fitting portion are respectively checked with a spring material. Since the retaining member formed so as to have a function is disposed, the pipe member fitted to the outer fitting part and the inner fitting part cannot be pulled out, so that the pipe member can be reliably connected. If the pipe member is pulled while turning left and right, the retaining member does not check, so the tubular member can be removed, and a mechanism for releasing the retaining member is not required. Therefore, the structure of the pipe joint becomes simple, and it can be manufactured at low cost from metal and provided to the market, and its functions can be widely used in the industry.

  According to the third aspect of the present invention, since the steps corresponding to the thickness of the pipe material are formed between the inner fitting part and the outer fitting part, the surfaces of the pipe joint and the pipe material are smoothly continuous when connected. To do. Therefore, the overall assembly is good and a beautiful appearance can be obtained.

  Hereinafter, an embodiment of a pipe joint according to the present invention will be described with reference to FIGS. In addition, although all pipe joints are comprised from a metal and show as what connects metal pipe materials, of course, a pipe joint and a pipe material may be made of a synthetic resin.

  1 to 6, the pipe joint has straight fitting parts 3 and 3 for fitting the horizontal pipes 2 and 2 on both sides of the collar part 6 as shown in FIG. The joint body 1 having the inner fitting portion 19 through which the vertical pipe material 2 passes is formed in two parts by sheet metal pressing into the divided body 1a and the divided body 1b as shown in FIG. And the attachment hole 8 of the retaining member 4 is provided in one of the outer fitting portions 3 of the divided body 1a and the divided body 1b, and the window hole 5 is provided on the other side of the outer fitting portion 3 so that the distal end portion of the retaining member 4 can be seen outward. The recess 21 in which the retaining member 20 as shown in the circle of FIG. 1 is accommodated inside the inner fitting portion, and the caulking pin 22 positioned at the center of the recess 21 are connected to the ends of the divided body 1a and the divided body 1b. The processing for forming the convex portion 23 and the concave portion 24 that are engaged with each other at the edge is also performed by press working in parallel with the above-described division formation.

  As shown in FIG. 3, a screw 10 is tightened into the mounting hole 8 as shown in FIG. 3 inside the joint body 1a and the outer fitting portion 3 of the joint body 1 divided and formed as described above (even if caulking is fixed by burring). It is possible to stand up slightly in the fitting direction of the pipe material 2, and the tip 3 b in contact with the pipe material 2 is formed with a spring material so that the tip part 3 b can be sufficiently inclined in the fitting direction of the pipe material 2. The attachment portion 4a of the member 4 is attached, and the attachment portion 20a at the center of the retaining member 20 formed of a spring material is attached to the recess 21 provided in the inner fitting portion 19 by a caulking pin 22 so as to form a square shape. Then, when the divided body 1a and the divided body 1b are aligned so that the vertical pipe member 2 is sandwiched by the internal fitting portion 19 as shown in FIG. 3, both end portions 20b of the retaining member 20 having a C-shape are vertically Since it bites into the peripheral surface of the tube material 2, when the tube material 23 is fitted to the outer fitting portions 3, 3 of the horizontal tube material 2 in this state, the retaining member 4 is pushed down by the tube material 2 to be fitted, and the fitting is finished. And the front end 4b bite into and engage with the inner surface of the tube material 2, and as shown in FIG. 4, the vertical tube material 2 and the horizontal tube materials 2, 2 can be connected so as to cross in a cross shape. Even if the vertical pipe member 2 tries to move up or down in this state, the vertical joint member 20 is prevented from moving up and down by the rising of the C-shaped retaining member 20 so that the pipe joint is not displaced.

  Further, even if a pulling force is applied to the horizontal pipe material 2, the retaining member 4 rises and restrains the movement, so that the tubular material 2 is also prevented from coming off. However, when the vertical pipe member 2 and the horizontal pipe member 2 are pulled in a zigzag manner to the left and right, the tip end portions 4b and 20b of the retaining member 4 and the retaining member 20 slide to cause the retaining members 4 and 20 to rise. Therefore, the position of the pipe joint relative to the vertical pipe 2 can be changed or the horizontal pipe 2 can be removed as necessary.

  In attaching the retaining member 20 to the recess 21, as shown in FIGS. 5A and 5B, a square opening 31 is formed in the center, and a square opening is formed in the wall of the recess 21. The portion 31a is formed, the inside thereof is cut and raised, the retaining member 20 is disposed in the recess 21, and the cut and raised piece 32 is fixed by being bent through the opening 31 of the retaining member 20. Also good. By fixing in this way, the retaining member 20 cannot be rotated and is stabilized, and the biting into the tube material 2 is also maintained. Further, a serration 34 may be formed at the distal end portion 20 b of the retaining member 20. According to this, the biting with respect to the tube material 2 becomes stronger, the holding force becomes stronger, and the tube material 2 cannot move in either of the longitudinal directions.

  Further, as shown in FIG. 6, when the pipe joint is bent so as to be perpendicular to the joint as shown by the dotted line, the divided body 1a and the divided body 1b are relatively opposite to each other at the joint. Shift. However, since the concave portion 24 and the convex portion 23 are fitted together, the shift hardly occurs. Therefore, even when a bending load is applied in the above direction, the structure is very difficult to bend. The same applies to the embodiment of FIG.

  Further, both ends of the pipe joint are narrowed so as to be narrowed, and the ends of the pipe material are easily fitted.

  Further, the recess 21 formed in the collar portion 6 secures a mounting space for the retaining member 20 and has a rib shape, thereby increasing the overall strength.

  Moreover, since a pipe joint can be manufactured from a metal, when connecting for metal pipe materials, it can connect firmly and can provide an inexpensive pipe joint.

  Further, since a step corresponding to the thickness of the pipe material is formed between the central collar portion and the outer fitting portion, the surfaces of the pipe joint and the pipe material are smoothly continued when connected. Therefore, the overall assembly is good and a beautiful appearance can be obtained.

  It can be used for joints that connect pipes that make up temporary scaffolds, fences, shelves, etc.

The perspective view which shows embodiment of the pipe joint of this invention. Sectional drawing which divided and formed the joint main body same as the above. Sectional drawing which shows the state which joined the division body same as the above and the division body. The perspective view which shows the connection state of the pipe material by the same as the above. (A) (b) is the enlarged front view of the principal part, and its longitudinal cross-sectional view. Explanatory drawing which shows the state of the shift | offset | difference at the time of the bending of a division body and a division body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint main body 1a, 1b Division body 2 Tubing material 3 Outer fitting part 4 Retaining member 5 Window hole 19 Inner fitting part 23 Convex part 24 Concave part

Claims (3)

The joint body is provided with a cylindrical outer fitting portion for fitting the pipe material to the outside and a cylindrical inner fitting portion for fitting the pipe material to the inside, and the joint main body is provided with the outer fitting portion and the inner fitting portion. Divided into two divided bodies so as to include each half, and the divided bodies are integrated by fitting another pipe material to the outer fitting portion with the pipe material sandwiched in the inner fitting portion. A pipe joint,
At the joint between the outer fitting parts of the two divided bodies, a concave portion is formed in one divided body, a convex portion is formed in the other divided body, and the pipe material is fitted to the outside with the concave portion and the convex portion fitted together. A pipe joint characterized by being combined. The outer fitting portion is provided with a retaining member made of a spring material, one end of the retaining member is fixed to one wall of the outer fitting portion, and the other end is slightly inclined outward from the window hole provided on the other wall. And project
A concave portion is formed on the inner surface of the inner fitting portion, a retaining member made of a spring material is formed in the concave portion and both ends are formed in a C shape, and the distal ends of both end portions of the retaining member are connected to the inner fitting. Protruding to the extent that it hits the surface of the pipe material fitted between the parts,
When fitting the tube material to the outer fitting portion and the inner fitting portion, the tip of each retaining member engages the surface of the tube material and cannot be pulled out. 2. The pipe joint according to claim 1, wherein the pipe material can be slipped out of the outer fitting portion.   The pipe joint according to claim 1 or 2, wherein a step corresponding to a thickness of the pipe material is formed between the inner fitting part and the outer fitting part.

Images