JPH0513390U - Pipe connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pipe connecting structure capable of firmly connecting without rattling. [Structure] In a connection structure composed of a first pipe 16, a second pipe 4 inserted therein, and a bolt-nut coupling 17, hole portions 37, 37 in a direction orthogonal to the axial center are formed in the second pipe 4. To pierce. The first pipe 16 has a large hole 38 having a diameter larger than the bolt head 35a and a small hole 39 through which the bolt screw portion 35b is inserted.
Each of them extends in the direction orthogonal to the axis. The bolt head 35a is pressed against the second pipe 4 so that the second pipe 4 is tightened to the inner surface 41 of the first pipe 16 on the side having the small hole 39.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe connecting structure used for assembling a clothes rack or the like.

[0002]

[Prior Art]

 Conventionally, in a clothes rack or the like constructed by combining pipe materials, the connecting structure of the pipe materials is such that the second pipe of the inner cylinder is inserted into the first pipe of the outer cylinder, The bolts were skewed into the mounting holes (which were provided so as to penetrate in the direction directly intersecting with the shaft center), and the nuts were connected by bolt nut coupling on the outer peripheral surface of the first pipe.

[0003]

[Problems to be solved by the device]

 However, in the conventional type, even if the bolt-nut connection is tightened strongly, there is a difference (gap) between the inner diameter of the first pipe and the outer diameter of the second pipe, and the bolt insertion hole and the bolt screw part Since there is a gap between the pipes, there was a problem that rattling occurred on both pipes.

Therefore, an object of the present invention is to solve the above-mentioned conventional problems and provide a pipe connecting structure in which both pipes can be firmly connected without rattling.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a connection structure comprising a first pipe, a second pipe inserted therein, and a bolt-nut coupling, and a second pipe in a direction orthogonal to the axis. And a large hole having a diameter larger than the bolt head and a small hole into which the bolt screw part is inserted, the first pipe being formed through the hole, and the small hole being inserted through the hole in the direction orthogonal to the axis. The head portion of the bolt is pressed against the second pipe, and the second pipe is tightened to the inner surface side of the first pipe on the side having the small hole.

[0006]

In the pipe connecting structure configured as described above, the second pipe is inserted into the first pipe, the bolt screw portion is inserted from the large hole into the hole portion and the small hole, and the bolt head is outside the second pipe. By pressing the second pipe on the peripheral surface, the second pipe can be tightened and connected to the inner surface side of the first pipe having the small hole.

Even if there is a gap between the first pipe and the second pipe or a gap between the hole portion of the second pipe and the bolt screw portion, both pipes are firmly rattled without rattling. Can be connected.

Further, since the first pipe and the second pipe are connected by a bolt nut connection, they can be freely assembled and disassembled.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 shows a pipe connecting structure according to the present invention, which comprises a first pipe 16, a second pipe 4 inserted therein, and a bolt-nut coupling 17. The bolt-nut connection 17 is composed of a bolt 35 such as a screw and a nut 36 such as a butterfly nut screwed to the bolt 35.

Specifically, the second pipe 4 is provided with holes 37, 37 extending in the direction orthogonal to the axial center, and the first pipe 16 has an inner diameter larger than the outer diameter of the bolt head 35 a. Of the large hole 38 is formed so as to penetrate in the direction orthogonal to the axial center, and a small hole 39 through which the bolt screw portion 35b is inserted is formed in the wall surface facing the wall surface provided with the large hole 38 in the direction orthogonal to the axial center. It is set up.

Then, the second pipe 4 is inserted into the first pipe 16, the bolt screw portion 35b of the bolt 35 is inserted from the large hole 38 into the hole portions 37, 37 and the small hole 39, and the bolt head portion 35a is inserted into the first portion. The second pipe 4 is pressed against the outer peripheral surface of the second pipe 4 and is connected to the inner surface 41 of the first pipe 16 on the side having the small hole 39 by tightening the nut 36 with the washer 40.

Thus, there is a gap A between the first pipe 16 and the second pipe 4, or a gap B between the hole portions 37, 37 of the second pipe 4 and the bolt screw portion 35b. Even in such a case, both pipes 4 and 16 can be firmly connected without rattling.

Further, since the first pipe 16 and the second pipe 4 are connected by the bolt nut connection 17, it is convenient to disassemble and assemble.

Thus, the pipe connection structure is used, for example, in a clothes rack.

As shown in FIG. 2, FIG. 3 and FIG. 4, this clothes rack is composed of a pair of front and rear base bodies made of a single thick pipe pillar member 2 connected to a leg member 1 having an open end. 3 and 3, a horizontal second pipe 4 connecting the base bodies 3 and 3, and a rod receiving body 5 attached to the upper ends of the base bodies 3 and 3.

Therefore, in the leg member 1, the base ends of the two pipe members 7, 7 bent and formed with a predetermined curvature are arranged adjacent to each other, and the distal ends thereof are expanded to form the base ends. They are integrated by welding to form a proximal end insertion portion 6 having a cross section of approximately 8 and connected to the pipe pillar 2.

Further, the leg member 1 is reinforced and connected by fixing the reinforcing rods 8 to the lower surfaces of the inclined portions of the pipe members 7 and 7 by welding or the like, and the opening portions at the tips of the pipe members 7 and 7. Caps 9, 9 are attached to the cover.

Next, as shown in FIG. 5, the base end insertion portion 6 of the leg member 1 can be inserted into the lower end portion of the pipe column member 2, and the insertion hole portion 10 is plastically deformed into a substantially dharma-shaped cross section. Has been formed. Then, the base end insertion portion 6 of the pipe pillar member 2 is inserted into the insertion hole portion 10 to connect the leg member 1 and the pipe pillar member 2.

At this time, since the base end insertion portion 6 and the insertion hole portion 10 have a cross section of a substantially V shape and a cross section of a substantially dharma shape, the pipe column 2 and the leg member 1 rotate relative to each other. Never.

Further, as shown in FIG. 6, a convex portion 11 is formed in the insertion hole portion 10, and the proximal end insertion portion 6 of the leg member 1 is locked by the convex portion. The edge portion of the base end insertion portion 6 is rounded to facilitate insertion into the insertion hole portion 10.

Further, as shown in FIGS. 3 and 7, the rod receiving body 5 can be inserted into the upper end portion of the pipe column member 2, and the female screw portion can be inserted into the upper end portion of the pipe column member 2. A mounting member 13 having 12 is fixed, a stopper 14 having a male screw 15 is screwed to the mounting member 13, and the rod receiver 5 is locked by the stopper 14.

Next, as shown in FIGS. 1 and 3, in the vicinity of the upper and lower central portions of the pipe column member 2, a short tubular first pipe 16 into which the second pipe 4 is inserted is welded in an orthogonal manner. It is fixed at W.

A pair of front and rear stand bodies 3, which are erected upright as shown in the figure, are formed by the pipe connecting structure composed of the first pipe 16, the second pipe 4 and the bolt-nut coupling 17 configured as described above. The second pipe 4 is inserted into the first pipes 16 and 16 of 3, and they are connected by the bolt-nut connection 17.

Next, the rod receiving body 5 includes an arm portion 19 formed by bending both ends of a round pipe material and the like, and a plurality of rod locking devices 20 formed by bending thin pipes into a substantially U shape. Consists of.

The arm portion 19 has mounting portions 21 and 21 to be inserted into the pipe column member 2 and an inclined portion 18. As shown in FIG. 7, the mounting portions 21 and 21 have a plurality of mounting portions, respectively. The vertically long concave portions 22 ... Are formed in the vertical direction.

Then, the mounting portions 21, 21 of the rod receiving body 5 are inserted into the upper ends of the pipe pillars 2, and the stopper 14 is screwed to press the tip of the male screw 15 into an arbitrary recess 22. Attach the rod receiver 5 to the pipe pillar 2.

Since the concave portion 22 has a vertically long shape, even if the stopper 14 is loosened a little, the rod receiving body 5 is locked without dropping at a stretch, which is safe. Furthermore, the rod receiving body 5 can be set at any height, which is convenient.

Further, as shown in FIG. 8, a through hole is formed at a predetermined position in the inclined portion 18 of the arm portion 19, and the rod locking device 20 is inserted into the through hole. Is fixed to the arm portion 19 via a fixing tool 23 such as a rivet at one end 29 having a flange portion facing in the radial direction.

The tip of the fixing tool 23, which houses the push-up pin 24, is not in an open-expanded shape as shown in the figure before use. It has a structure that expands and expands. That is, after the fixing tool 23 is inserted into the one end 29 of the rod locking tool 20, the push pin 24 is pressed to fix the rod locking tool 20 to the arm section 19.

As described above, without using bolts and nuts, the rod locking device 20 can be easily and firmly fixed to the arm portion 19, and the structure can be made simple.

Note that the clothes racks are used as a pair of left and right.

Therefore, as described above, this clothes rack can be connected simply by inserting the base end insertion portion 6 of the leg member 1 into the insertion hole portion 10 of the pipe pillar member 2. 2 is connected by the second pipe 4 serving as a connecting rod, and the attachment portions 21, 21 of the rod receiving body 5 are inserted into the upper ends of the pipe column members 2, 2 and attached with the stoppers 14, 14 for quick and easy operation. Can be assembled into.

Alternatively, on the contrary, it can be decomposed quickly and easily. It can be made compact by stacking each part in the disassembled state, and can be packed and shipped in that state.

Further, unlike the conventional one, since a bolt nut or an interposing member is not required to connect the leg member 1 to the pipe pillar member 2, the structure is simple, the number of parts is small, and the weight is low. Since the leg member 1 is inserted into the pipe column member 2 and directly connected, it is possible to obtain sufficient strength to withstand the load in the vertical direction, and it does not bend, break, or rotate and has excellent durability. ing.

Next, FIG. 9 shows another embodiment, in which the insertion hole portion 10 having the convex portion 11 is formed on the upper end of the pipe pillar 2 as in FIGS. 5 and 6 of the previous embodiment. In addition, a case is shown in which the tip-expanded article-drying rod receiving member 25 is connected, and further, it is connected to the pair of right and left vertically installed pipe pillar members 2 and 2 by a pipe connecting structure (not shown). ..

That is, the base end insertion portions 6 of the two adjacent pipe members 26, 26 of the article-drying rod receiving member 25 with the tip widened are integrated by welding to form a cross section of a substantially 8-shape. Further, the upper end of one thick pipe pillar 2 is plastically deformed into a substantially dharma cross section to form an insertion hole portion 10, and the base end insertion portion 6 is inserted into the insertion hole portion 10 and connected. ing.

In this article pole receiving member 25, the base ends of two pipe members 26, 26 bent with a predetermined curvature are adjacent to each other, and the tip ends are in an expanded shape, and the base ends are Are integrated by welding to form a proximal end insertion portion 6 having a cross section of approximately 8 as in FIG. 4 of the previous embodiment. 27, 27 are caps attached to the openings at the tips of the pipe members 26, 26.

Further, a plurality of rod locking devices 20 ... Similar to the previous embodiment are fixed to the inclined portions 28, 28 of the pipe members 26, 26 in the same manner as in FIG.

Then, the pair of right and left pipe pillar members 2 and 2 which are erected are connected by the pipe connecting structure shown in FIG. 1 (not shown).

Therefore, the clothes rack of FIG. 9 can be connected simply by inserting the base end insertion portion 6 of the clothes rod receiving member 25 into the insertion hole portion 10 of the pipe pillar member 2, and can be assembled and disassembled quickly and easily. Can be convenient. In addition, it has a small number of parts, is lightweight, and has a simple structure, so it can be manufactured easily and inexpensively.

It should be noted that the present invention is not limited to the above-described embodiment, and design changes can be freely made without departing from the gist of the present invention. For example, in the embodiment of FIG. More than one book may be used in parallel, or they may be arranged upside down in FIG.

[0043]

[Effect of the device]

 Since the present invention is constructed as described above, it has the following great effects.

Even if there is a gap A between the first pipe 16 and the second pipe 4, or if there is a gap B between the hole portions 37, 37 of the second pipe 4 and the bolt screw portion 35b, both The pipes 4 and 16 can be firmly connected without rattling.

Further, since the first pipe 16 and the second pipe 4 are connected by the bolt-nut coupling 17, it is convenient to disassemble and assemble. Therefore, when it is applied to a clothes rack or the like, it can be disassembled and compactly shipped, and can be assembled easily and firmly at each home without rattling.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a front view showing an example.

FIG. 3 is a side view of the same.

FIG. 4 is an enlarged sectional view of a main part of a leg member.

FIG. 5 is an enlarged cross-sectional view of a main part of a pipe pillar member.

FIG. 6 is an enlarged cross-sectional view of a main part of a state where the leg member and the pipe column member are connected to each other.

FIG. 7 is an enlarged cross-sectional view of a main part of a pipe column member and a rod receiving body in a mounted state.

FIG. 8 is an enlarged cross-sectional view of a main part of a rod receiver.

FIG. 9 is a side view showing another embodiment.

[Explanation of symbols]

 4 2nd pipe 16 1st pipe 17 Bolt nut connection 35a Bolt head 35b Bolt screw 37 Hole 38 Large hole 39 Small hole 41 Inner surface side

Claims (1)

[Scope of utility model registration request] 1. A first pipe 16 and a second pipe inserted therein.
In the connection structure composed of the pipe 4 and the bolt-nut coupling 17, the second pipe 4 has holes 37, 37 in the direction orthogonal to the axial center.
And the first pipe 16 has a bolt head 35
A large hole 38 having a diameter larger than a and a small hole 39 into which the bolt screw portion 35b is inserted are provided so as to penetrate in a direction orthogonal to the axial center, respectively, and the bolt head 35a is pressed against the second pipe 4, A pipe connecting structure characterized in that the second pipe 4 is configured to be fastened to an inner surface side 41 of the first pipe 16 on the side having the small hole 39.