JP3126210U - Square pipe structure - Google Patents

Abstract

An object of the present invention is to provide a square pipe structure that improves workability during assembling work and does not cause gaps or unnecessary protrusions at corners.
In a square pipe structure obtained by assembling a plurality of square pipes having a hollow shape and a rectangular cross section, the assembly is opened upward at least at an end portion while being mounted substantially horizontally when assembled. Assembly with side square pipe 2 to be assembled having attachment part 2a and assembly part 3a that is assembled from above the square pipe 2 to be assembled and fits with assembly part 2a at the end. Side angle pipe 3 and an extension formed on the end of the assembled side square pipe 3 and covering the end surface of the assembled side square pipe 2 in a state where the assembled portion 3a is fitted to the assembled portion 2a. 3ac, and the assembled side square pipe 2 and the assembled side square pipe 3 are assembled in a substantially planar shape.
[Selection] Figure 7

Description

  The present invention relates to a square pipe structure obtained by assembling a plurality of hollow square pipes having a rectangular cross section, and in particular, the assembled side square pipe and the assembled side square pipe are assembled in a substantially planar shape. It is related with the structure of the square pipe characterized by comprising.

A structure of a square pipe obtained by assembling a plurality of square pipes in a substantially flat shape is formed with notches such as slits on both of the square pipes to be assembled, as disclosed in Patent Document 1, for example. It was obtained by fitting a notch formed in one square pipe and a notch formed in the other square pipe. According to such a structure, when the square pipes are assembled, the structures can be planarized by fitting the notches together, and the square pipes are displaced from each other before being fixed by welding or the like. Can be avoided.
JP 2006-171395 A

  However, the conventional square pipe structure has the following problems when attempting to assemble the end of the other square pipe into the end of one square pipe. That is, if the end face of one or the other square pipe faces the outside, there is a problem that a gap is generated in the corner of the obtained structure, and in particular, the corner portion viewed from the end face of the square pipe has an R shape. In some cases, when one square pipe is assembled to the other square pipe, the R shape faces to the outside, and a gap is generated at the corner of the resulting structure. There is a bug.

  The present invention has been made in view of such circumstances, and aims to improve the workability during assembly work and to provide a structure of a square pipe that does not cause gaps or unnecessary protrusions at corners. Yes.

  In order to achieve such an object, the invention described in claim 1 of the present invention is a structure of a square pipe obtained by assembling a plurality of square pipes having a hollow shape and a rectangular cross section. The assembled side square pipe having the assembled part opened upward at least at the end in the installed state, and assembled from above the assembled square pipe, and the assembled part at the end An assembled side square pipe having an assembled portion to be fitted to the assembled side square pipe, and the assembled side in a state where the assembled portion is fitted to the assembled portion. And an extension portion that covers an end surface of the attached side square pipe, and the assembled side square pipe and the assembled side square pipe are assembled in a substantially flat shape.

  The invention according to claim 2 is the square pipe structure according to claim 1, wherein the square pipe is formed at an end of the assembled side square pipe, and has a length corresponding to the thickness of the assembled side square pipe. And a slit that is formed at a position corresponding to the protruding portion of the assembled side pipe and into which the protruding portion can be fitted.

  According to a third aspect of the present invention, in the square pipe structure according to the second aspect, the slit is chamfered.

  According to the first aspect of the present invention, a structure can be obtained by assembling the assembled side square pipe from above the assembled side square pipe mounted substantially horizontally, so that the workability during the assembly work is improved. Can be made. Also, when the assembled part of the assembled side square pipe is fitted to the assembled part of the assembled side square pipe, the extension is formed at the end of the assembled side square pipe. Since the end face of the side-angle pipe (including the R shape when the R shape is formed) is covered, it is avoided that a gap is generated at the corner of the structure due to the end face facing outside, and Unnecessary ledges can be avoided.

  According to the invention of claim 2, when the assembled portion is fitted to the assembled portion and the assembled side square pipe is assembled to the assembled side square pipe, the slit is fitted into the protruding portion, so that an unnecessary protrusion Can be further avoided.

  According to the invention of claim 3, since the slit is chamfered, the slit can be more easily fitted into the protruding portion, and the workability at the time of assembling the structure can be further improved. Can do.

  The structure of the square pipe according to the embodiment of the present invention is used as a pallet for placing workpieces such as various products and parts. As shown in FIG. 2, a pair of assembled side square pipes 3, a first intermediate square pipe 4, and a second intermediate square pipe 5 are assembled to form a substantially planar lattice shape as a whole (see FIG. 2). It is a thing. The upper surface of each square pipe constitutes a mounting surface on which a workpiece is mounted as a pallet.

  Each square pipe (the assembled side square pipe 2, the assembled side square pipe 3, the first intermediate square pipe 4 and the second intermediate square pipe 5) is formed by bending a metal plate into a square cross section and then aligning them. For example, the surface is fixed by seam welding or the like, and has a hollow shape and a rectangular cross section. However, the thickness of the square pipe to be assembled is defined as a dimension t.

  As shown in FIG. 8, the assembled side square pipe 2 has an assembled portion 2 a that opens upward at the ends (both ends) while being mounted substantially horizontally during assembly. . As shown in FIG. 3, the assembled portion 2a includes a slit 2aa whose width is substantially the same as the thickness t of the square pipe, a protruding portion 2ab protruding in the longitudinal direction by a dimension K, and a recessed portion 2ac. And have. The dimension K is substantially the same as the wall thickness dimension t of the assembled side square pipe 3, and the dimension K and the dimension N are substantially the same.

  As shown in FIG. 8, the assembled side square pipe 3 is assembled from above the assembled side square pipe 2, and has an assembled portion 3 a that fits the assembled portion 2 a at the end (both ends). It is a thing. As shown in FIG. 5, the assembling part 3a has slits 3aa and slits 3ab whose width is substantially the same as the thickness of the square pipe, and an extension part 3ac protruding in the longitudinal direction by a dimension F. ing. The dimension F is twice (2 × t) the wall thickness dimension t of the assembled side square pipe 2 and the slit 3aa is formed at a position corresponding to the protruding portion 2ab.

The end of the assembled side square pipe 2 (see FIG. 4) and the end of the assembled side square pipe 3 (see FIG. 6) are set based on the following relational expression. Here, c represents a predetermined clearance dimension, and α represents the laser corner R machining accuracy.
I = y − ((t + c) / 2)
J = (x + c) / 2
K = E
L = E
M = x-E
N = E
A = y / 2 + α
B = x-F
C = y-E
D = x + (c / 2)
E = t + c
F = 2E
G = x-E

  Then, by inserting the slit 3aa into the protrusion 3ac while inserting the slit 3ab through the slit 2aa, the assembled portion 2a and the assembled portion 3a are fitted, and as shown in FIG. A frame composed of the side corner pipe 2 and the assembled side corner pipe 3 is formed. As shown in FIG. 7, the end portion of the projecting portion 2 ab and the side surface of the assembled side square pipe 3 at the fitting portion (corner portion of the frame) between the assembled portion 2 a and the assembled portion 3 a in this frame. Are substantially flush with each other, and the extension portion 3ac covers the end face (both end faces) of the assembled side square pipe 2, and the R shape of the corner portion on the end face (the part indicated by the symbol H in FIG. 3). Is also covered. The end surface of the protruding portion 2ab and the side surface of the assembled side square pipe 2 are substantially flush with each other.

  By the way, as shown in FIG.10 and FIG.11, the intermediate | middle assembly which can be assembled | attached the edge part (both ends) of the 2nd intermediate | middle square pipe 5 by opening upwards in the approximate center of the assembly | attachment side square pipe 2. Attached portion 2b is formed, and an intermediate attached portion 3b that opens upward and can be attached to the ends (both ends) of the first intermediate square pipe 4 is formed at the approximate center of the assembled side square pipe 3. Is formed. On the other hand, the first intermediate angle pipe 4 and the second intermediate angle pipe 5 are formed with notches 4a and 5a that can be fitted and assembled with the intermediate assembly portions 2b and 3b at both ends thereof. In addition, an assembled portion 4 b that can be fitted to a notch 5 b formed in the approximate center of the second intermediate angle pipe 5 is formed at the center of the first intermediate angle pipe 4.

  Thus, as shown in FIG. 10, the notch 4a at both ends of the first intermediate square pipe 4 is fitted to the intermediate assembled part 3b of the assembly side square pipe 3 constituting the frame. After that, as shown in FIG. 11, if the slits 5a and 5b of the second intermediate angle pipe 5 are fitted and assembled to the intermediate assembled portion 2b and the assembled portion 4b, FIGS. A square pipe structure 1 as shown in FIG.

  According to the above embodiment, since the assembled side square pipe 3 can be assembled from above the assembled side square pipe 2 mounted substantially horizontally, the structure 1 can be obtained. Can be improved. Further, when the assembled portion 3a of the assembled side square pipe 3 is fitted to the assembled portion 2a of the assembled side square pipe 2, the extension formed at the end of the assembled side square pipe 3 Since the end surface (including the R shape H) of the assembled side square pipe 2 is covered by the portion 3ac, it is avoided that a gap is generated in the corner portion of the structure 1 due to the end surface facing the outside, and Unnecessary ledges can be avoided. Even in the case where the R shape is not formed on the end face of each square pipe (the corner is formed at a right angle), the end face can be covered with the extension 3ac.

  Further, when the assembled portion 3a is fitted to the assembled portion 2a and the assembled side square pipe 3 is assembled to the assembled side square pipe 2, the slit 3aa fits the protruding portion 2ab, and the end surface of the protruding portion 2ab And the side surface of the assembled side square pipe 3 are substantially flush with each other, so that unnecessary protrusion can be further avoided. Furthermore, the structure in which each square pipe is assembled as described above can sufficiently withstand the load from above even if there are few welded parts, thereby suppressing adverse effects (such as expansion of the square pipe) due to heat during welding. can do.

  However, as shown in FIG. 12, chamfering 3c is given to the slit 3aa in the assembly side pipe 3 as shown in FIG. According to the chamfer 3c, the slit 3aa can be more easily fitted into the protruding portion 2ab, and workability at the time of assembling the structure 1 can be further improved. The chamfering as described above is also formed in the other slits, so that the assembling work can be performed more smoothly.

  Although the present embodiment has been described above, the present invention is not limited to this, and may be applied as a structure other than a pallet. For example, a leg portion made of a square pipe or the like may be assembled on the lower surface of the planar structure as described above and used as a chair or the like. Further, in the present embodiment, a beam is formed in a cross shape in the center of a substantially square to form a lattice shape, but may be a frame body having a rectangular shape in plan view, for example. Furthermore, in this embodiment, all the square pipes to be assembled have the same cross-sectional dimension, but structures having different cross-sectional dimensions (particularly width dimensions) may be assembled to obtain a structure.

  An extension part that covers the end surface of the assembled side square pipe in a state where the assembled part is fitted to the assembled part and formed at the end of the assembled side square pipe; and As long as the square pipe structure is formed by assembling the assembled side square pipe in a substantially flat shape, the structure can be applied to one having a different external shape or having other functions and structures.

The whole perspective view showing the structure concerning the embodiment of the present invention. (A) Plan view of the structure (b) Front view of the structure The expanded perspective view which shows the to-be-assembled part formed in the edge part of the to-be-assembled side square pipe in the structure 4 side view showing the dimensions of the end of the assembled side square pipe in the same structure The expanded perspective view which shows the assembly | attachment part formed in the edge part of the assembly | attachment side square pipe in the structure 4 side view showing the dimensions of the end of the assembled side square pipe in the same structure The expanded perspective view which shows the state which made the assembly | attachment part fit to the to-be-attached part in the same structure. Perspective view showing assembled side square pipe and assembled side square pipe in the same structure The perspective view which shows the state which assembled | attached the side square pipe to the assembly | attachment side square pipe in the same structure, and was set as the frame. The perspective view which shows the frame and the 1st intermediate angle pipe in the structure The perspective view which shows the frame in which the 1st intermediate angle pipe in the same structure was assembled | attached, and the 2nd intermediate angle pipe The enlarged side view which shows the edge part of the assembly | attachment side square pipe in the structure

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Structure 2 Side | angular pipe to be assembled 2a Part to be assembled 2aa Slit 2ab Projection part 3 Side square pipe 3a Assembly part 3aa Slit 3ab Slit 3ac Extension part 3c Chamfer 4 First intermediate angle pipe 5 Second intermediate angle Pipe HR shape

Claims (3)

In a square pipe structure obtained by assembling a plurality of hollow square pipes having a rectangular cross section,
An assembled side square pipe having an assembled portion opened upward at least at an end portion in a state of being placed substantially horizontally at the time of assembly;
An assembled side square pipe assembled from above the assembled square pipe, and having an assembled part fitted to the assembled part at the end;
An extension that is formed at an end of the assembled side square pipe and covers the end surface of the assembled side square pipe in a state in which the assembled portion is fitted to the assembled portion;
And a square pipe structure in which the assembled side square pipe and the assembled side square pipe are assembled in a substantially planar shape. A protruding portion that is formed at an end of the assembled side square pipe and protrudes in the longitudinal direction in the dimension of the thickness of the assembled side square pipe;
A slit that is formed at a position corresponding to the protruding portion of the assembled side pipe, and into which the protruding portion can be fitted;
The structure of the square pipe according to claim 1, characterized by comprising:   The square pipe structure according to claim 2, wherein the slit is chamfered.

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