JP2008014133A - Pipe coupling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe coupling capable of firmly connecting a pipe material, in the pipe coupling for connecting the pipe material for constituting a temporary scaffold, a fence, a shelf and the other. <P>SOLUTION: This pipe coupling is integrated by fitting a separate pipe material to an out-fitting part, in a state of fitting divided bodies 1a and 1b by sandwiching the pipe material in an inner-fitting part, by dividing a coupling body 1 into the two divided bodies 1a and 1b so as to respectively include the out-fitting part and the inner-fitting part 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 of the two divided bodies, a recession 24 is formed in one divided body, and a projection 23 is formed in the other divided body. An inside inclined face 23a of the projection 23 and an outside inclined face 24a of the recession 24 are respectively formed so as to incline in the lengthwise direction of the out-fitting part. The pipe material is fitted to the outside in a state of fitting the recession 24 and the projection 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 slopes on the inner side of the convex part and the slopes on the outer side of the concave part are formed so as to be inclined with respect to the longitudinal direction of the outer fitting part, respectively, and the pipe material is fitted with the concave part and the convex part fitted together. It is characterized by being fitted outside.

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. While projecting slightly obliquely outward from the window hole provided on the other wall,
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. It is characterized in that it is possible to slide out the tube material from the outer fitting portion.

  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, a concave portion is formed in one divided body and a convex portion is formed in the other divided body at the joint of the outer fitting portions of the two divided bodies, and the slope inside the convex portion and the slope outside the concave portion are In addition, each of the divided body and the divided body is formed so as to be inclined with respect to the longitudinal direction of the outer fitting portion, and the tube material is fitted to the outside in a state where the concave portion and the convex portion are fitted together. When the pipe material is fitted in the outer fitting portion, the slope of the convex portion and the slope of the concave portion are integrally joined while sliding, so the inner divided body naturally couples to the divided body, but at the same time, the inner fitting portion is Since it acts so as to strongly tighten the pipe material, the pipe material penetrating the pipe joint can be firmly fixed.

  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.

  In FIG. 1 to FIG. 4, the pipe joint has outer fitting parts 3, 3 for fitting the horizontal pipe members 2, 2 on both sides of the collar part 6 as shown in FIG. A joint main body 1 having an inner fitting portion 19 through which a vertical pipe 2 is passed in the center is divided and formed on a split body 1a and a split body 1b as shown in FIG. 2 by sheet metal pressing. Then, a mounting hole 8 for 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 a window hole for allowing the distal end portion 4b of the retaining member 4 to be exposed to the other side of the outer fitting portion 3. 5, a concave portion 21 in which the retaining member 20 is accommodated only on the divided body 1 a side inside the inner fitting portion 19, and a caulking pin 22 positioned at the center of the concave portion 21, at the edges of the divided body 1 a and the divided body 1 b The processing for forming the convex portion 23 and the concave portion 24 that are engaged with each other is also performed by pressing in parallel with the above-described division formation.

  The inclined surface 23a on the inner side of the convex portion 23 and the inclined surface 24a on the outer side of the concave portion 24 are formed in a direction inclined by 45 degrees with respect to the longitudinal direction of the outer fitting portions 3 and 3, respectively.

  As shown in FIG. 3, the screw 10 is tightened into the attachment hole 8 as shown in FIG. 3 in one of the divided body 1 a of the joint body 1 and the outer fitting portion 3 of the divided body 1 b formed as described above. An attachment portion 4a of a retaining member 4 formed of a spring material is attached to the tip portion 3b that stands up slightly to be in contact with the tube material 2 so that a sufficient inclination in the fitting direction of the tube material 2 can be attached. In the recess 21 provided in the inner fitting portion 19 on the 1a side, the attachment portion 20a at the center of the retaining member 20 formed of a spring material so as to form a C shape is attached by tightening a screw 28 into the attachment hole 27. It may be fixed by caulking or the like by burring. Then, when the divided body 1a and the divided body 1b are aligned so that the vertical tube 2 is sandwiched by the internal fitting portion 19 as shown in FIG. 3, both ends 20b of the retaining member 20 having a C-shape are the vertical tubes. 2 is engaged with one of the peripheral surfaces of the pipe 2 in this state. When the pipes 2 and 2 are fitted into the outer pipe fittings 3 and 3 in this state, the retaining member 4 is pushed down by the pipe 2 and fitted. When the fitting is finished, the distal end 4b is engaged with the inner surface of the tube material 2 so as to bite and engage, so that the vertical tube material 2 and the horizontal tube materials 2, 2 are crossed in a trifurcated manner as shown in FIG. can do.

  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.

  Further, as shown in FIG. 2 and FIG. 3, when the tubular material 2 is passed through the inner fitting portions 19, 19 and then the divided body 1 a and the divided body 1 b are combined and the tubular material 2 is fitted into the outer fitting portion 3, the convex portion The slope 23a of 23 and the slope 24a of the recess 24 are integrally coupled while sliding, but at that time, they move as indicated by the arrows shown in FIG. 2, so that the inner divided body 1b naturally couples to the divided body 1a. However, at the same time, as shown in FIG. 3, the inner fitting parts 19, 19 act so as to strongly tighten the pipe material 2, so that the pipe material 2 penetrating the pipe joint can be firmly fixed.

  When the pipe members 2 and 2 are fitted to the outer fitting portions 3 and 3, the retaining member 4 is pushed down by the pipe member 2 so that the fitting of the pipe member 2 can be performed without any trouble. As shown, they are connected straight. However, after fitting, the distal end of the retaining member 4 engages with the inner peripheral surface of the tube material 2 in a biting manner, and is pulled when a pulling force is applied to the tube material 2 to restrain the tube material 2 from moving. There is no escape. However, when it is necessary to pull out the fitted tube material 2, if the tube material 2 is pulled in a zigzag manner to the left and right, the tube material 2 slips and does not cause the retaining member 4, so that the tube material 2 can be removed. .

  As described above, according to the pipe joint having the integral configuration and the divided configuration, the following effects can be obtained.

  The retaining member can be connected so as not to come off simply by fitting the pipe material, but if necessary, the pipe material 2 can be pulled out from the pipe joint while turning in a zigzag manner to the left and right.

  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.

  In addition, as shown in FIG. 5 by the above-mentioned pipe joint, when the pipe material 2 is connected, while connecting the plurality of parallel pipe materials 2 on a plane, in the collar portion 6 of the pipe joint located on the same side, It is preferable that the distances l1, l2, l3, and l4 from the center O of the hole for fitting the pipe material orthogonal to the plane are set to be equal to each other. By configuring in this way, the lengths of the pipe members 2 arranged in parallel are all equal, so that the dimensional length can be easily calculated.

  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 of the state which joined the division body and division body same as the above, and made it the joint main body. The perspective view which shows the connection state of the pipe material by the same as the above. The top view which shows an example of an assembly state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Joint main body 2 Pipe material 3 Outer fitting part 4 Retaining member 5 Window hole 19 Inner fitting 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,
In the joint of the outer fitting portions of the two divided bodies, a concave portion is formed on one divided body, and a convex portion is formed on the other divided body, and the slope inside the convex portion and the slope outside the concave portion are respectively A pipe joint formed so as to be inclined with respect to the longitudinal direction of the outer fitting portion, and fitting the pipe material to the outside in a state where the concave portion and the convex portion are fitted together. 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.

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