Three-dimensional assembled structure

Abstract

To provide a solid assembly structure which enables efficient assembly and is excellent in aesthetic quality.SOLUTION: A first block 5 having an indent part 15 having a shape which is open at the upper side is attached to an attachment hole 11 of a column 1. Further, an end of a beam 2 includes a second block 7 having a protruding part 8 which is fitted in the indent part 15 from above. The beam 2 is lowered with its horizontal attitude kept and the protruding part 8 is fitted in the indent part 15.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] This invention relates to a three-dimensional assembled structure. [Background technology]

[0002] Traditionally, many three-dimensional assembly structures that can be freely assembled using numerous pipe materials have been known. For example, in the invention proposed in Patent Document 1 as an assembly rack, a component with multiple engaging protrusions integrally attached to a fitting cylinder is fixed to the first vertical pipe in an external fitting manner and secured with bolts, while a complex joint member is attached to the end of a horizontal pipe, and the joint member is locked to the engaging protrusions of the fitting cylinder. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-13597 [Overview of the project] [Problems that the invention aims to solve]

[0004] The invention described in Patent Document 1 above had the following drawbacks: (i) the assembly process as a three-dimensional assembly structure was cumbersome and inefficient; (ii) complex joint members were exposed in the completed assembly state, resulting in an unsightly appearance and hindering the display of goods on display shelves, etc.; and (iii) assembly, disassembly, expansion, reassembly, and extension were not easy, making efficient work difficult. [Means for solving the problem]

[0005] Therefore, the present invention provides a configuration in which, at the connection point between a vertical pipe forming a column and a horizontal pipe forming a beam, a mounting hole is formed in the vertical pipe, and a part of a first block for support is inserted into the mounting hole and attached; a second block is inserted and fixed to the end of the horizontal pipe, and when the second block is pushed against the first block from a direction parallel to the connecting vertical plane in which the mounting hole of the vertical pipe is formed, a wedge mechanism formed at the mutual fitting portion of the first block and the second block causes the outermost end face of the horizontal pipe to gradually approach and press against the connecting vertical plane of the vertical pipe.

[0006] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block for support is inserted into the mounting hole and attached; a second block for drop-in is inserted and fixed to the end of the horizontal pipe; moreover, the first block has an upwardly opening recess, and the second block has a projection that is dropped into the upwardly opening recess from above; and as the projection is dropped into the recess from above, a wedge mechanism is provided which causes the outermost end surface of the horizontal pipe to gradually approach and press against the vertical pipe; and this wedge mechanism is formed by the mutual sliding pressure-contact inclined surfaces of the projection and the recess.

[0007] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block for support is inserted into the mounting hole and attached; a second block for drop-in is inserted and fixed to the end of the horizontal pipe; moreover, the first block is provided with an upwardly protruding projection, and the second block is provided with a downwardly opening recess that is dropped into and fitted onto the upwardly protruding projection from above, and a wedge mechanism is provided which causes the outermost end surface of the horizontal pipe to gradually approach and press against the vertical pipe as the downwardly opening recess is fitted onto the projection from above, and this wedge mechanism is formed by the mutual sliding pressure-contact inclined surfaces of the projection and the recess.

[0008] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first support block is inserted into the mounting hole and attached; a second block for drop-in is inserted and fixed to the end of the horizontal pipe; moreover, a recessed portion with an opening to the side and upward is formed on each of the left and right sides of the first block, and a protrusion is formed in the second block that is dropped into the recess from above; and a wedge mechanism is provided in which, as the protrusion is dropped into the recess from above, the outermost end surface of the horizontal pipe gradually approaches and presses against the vertical pipe; and this wedge mechanism is formed by the mutual sliding pressure-contact inclined surfaces of the protrusion and the recess.

[0009] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block is inserted into the mounting hole and attached; a second block is inserted and fixed to the end of the horizontal pipe; moreover, the first block has a downwardly opening recess, and the second block has a protrusion that is pushed from below into the downwardly opening recess; and as the protrusion is pushed from below into the recess, a wedge mechanism is provided which causes the outermost end surface of the horizontal pipe to gradually approach and press against the vertical pipe; and this wedge mechanism is formed by the mutual sliding pressure contact inclined surfaces of the protrusion and the recess.

[0010] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block is inserted into the mounting hole and attached; a second block is inserted and fixed to the end of the horizontal pipe; moreover, the first block has a downwardly opening recess, and the second block has an upwardly protruding convex portion that is pushed inward from below into the downwardly opening recess, and a wedge mechanism is provided which causes the outermost end surface of the horizontal pipe to gradually approach and press against the vertical pipe as the convex portion is fitted outward from below into the downwardly opening recess, and this wedge mechanism is formed by the mutual sliding pressure contact inclined surfaces of the convex portion and the recess.

[0011] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block is inserted into the mounting hole and attached; a second block is inserted and fixed to the end of the horizontal pipe; moreover, opening recesses are formed on the left and right sides of the first block, and protrusions are formed on the second block that are pushed from below into the recesses; and a wedge mechanism is provided in which, as the protrusions are pushed from below into the recesses, the outermost end surface of the horizontal pipe gradually approaches and presses against the vertical pipe; and this wedge mechanism is formed by the mutual sliding pressure contact inclined surfaces of the protrusions and recesses.

[0012] Furthermore, at the connection point between the vertical pipe forming the column and the horizontal pipe forming the beam, a mounting hole is formed in the vertical pipe, and a part of the first block is inserted into the mounting hole and attached; a second block for pushing is inserted and fixed to the end of the horizontal pipe; moreover, the first block has a laterally opening recess, and the second block has a protrusion that is pushed from the side into the laterally opening recess; and as the protrusion is pushed from the side into the recess, a wedge mechanism is provided which causes the outermost end surface of the horizontal pipe to gradually approach and press against the vertical pipe; and this wedge mechanism is formed by the mutual sliding pressure contact inclined surfaces of the protrusion and the recess.

[0013] Also, at the connection part between the vertical pipe forming the column and the horizontal pipe forming the beam; an attachment hole is formed in the vertical pipe, and a part of the first block is inserted into and attached to the attachment hole; at the end of the horizontal pipe, a second block for pushing is inserted and fixed; moreover, a side protruding convex part is provided on the first block, and a side opening concave part that is externally fitted while being pushed in from the horizontal direction with respect to the side protruding convex part is formed on the second block. When the side opening concave part is externally fitted to the convex part from the horizontal direction, a wedge mechanism is provided that gradually brings the outermost end face of the horizontal pipe into pressure contact with the vertical pipe while approaching it. The wedge mechanism is formed with the mutual sliding pressure contact inclined surfaces of the convex part and the concave part.

[0014] Also, at the connection part between the vertical pipe forming the column and the horizontal pipe forming the beam; an attachment hole is formed in the vertical pipe, and a part of the first block is inserted into and attached to the attachment hole; at the end of the horizontal pipe, a second block is inserted and fixed; moreover, concave parts that are open to the side and downward are formed on the left and right side surfaces of the first block, and a convex part that is pushed in from the horizontal direction with respect to the concave part is formed on the second block. When the convex part is pushed in from the horizontal direction with respect to the concave part, a wedge mechanism is provided that gradually brings the outermost end face of the horizontal pipe into pressure contact with the vertical pipe while approaching it; the wedge mechanism is formed with the mutual sliding pressure contact inclined surfaces of the convex part and the concave part.

[0015] Also, in a state where the second block is inserted and fixed to the end of the horizontal pipe, the second block is fixed so that the outer end face of the second block is at the same position as the outermost end face of the horizontal pipe or at a slightly inner position.

[0016] In addition, the mounting hole of the vertical pipe has a vertically long basic shape with a vertical dimension larger than the left-right width dimension, and at the upper and lower central positions of the vertically long basic shape, small locking concave portions are notch-formed on each of the left and right sides; the first block has a projecting piece having a locking head that can be inserted into the mounting hole, and is fixed by rotating it by 90°. When a pulling force acts on the first block, a small convex portion that engages with the small locking concave portion is provided on the back surface of the locking head. In addition, the mounting hole of the vertical pipe has a horizontally long basic shape with a left-right width dimension larger than the vertical dimension, and at the left and right central positions of the horizontally long basic shape, small locking concave portions are notch-formed on each of the upper and lower sides; the first block has a projecting piece having a locking head that can be inserted into the mounting hole, and is fixed by rotating it by 90°. When a pulling force acts on the first block, a small convex portion that engages with the small locking concave portion is provided on the back surface of the locking head.

[0017] In addition, in a three-dimensional assembled structure having a number of connection parts in which two to four horizontal pipes are arranged in the same plane with respect to a single vertical pipe; when viewed from the front, back, left and right sides, and above, the first block, the second block, and the mounting screws are assembled so as not to be visible. In addition, in a three-dimensional assembled structure having a number of connection parts in which two to four horizontal pipes are arranged in the same plane with respect to a single vertical pipe; when looking up from below, the first block, the second block, and the mounting screws are assembled so as not to be visible.

Effect of the Invention

[0018] According to the present invention, assembly can be performed simply, quickly, and easily using two small parts (first block and second block), while ensuring sufficient rigidity and strength. Furthermore, it has an excellent appearance and eliminates unnecessary protrusions. In addition, disassembly and reassembly for relocation to another location are easy, and shelf layouts can be freely changed and expanded easily. Moreover, the wedge mechanism allows the end faces of horizontal pipes (beams) to be strongly pressed against the vertical planes of pipes (columns), resulting in high overall rigidity as a three-dimensional assembled structure. It can be widely used for cabinets, various metal shelves, and store fixtures, office fixtures, prefabricated furniture, display shelves, showcases, wagons, racks, tables, desks, negotiation booths, information boards, reception desks, etc. [Brief explanation of the drawing]

[0019] [Figure 1] This is an overall perspective view showing a first embodiment of the present invention. [Figure 2] These figures illustrate the main parts of the present invention, where (A) is a perspective view showing the state in which the second block is inserted and fixed to a horizontal pipe, and (B) is an enlarged perspective view of the main parts. [Figure 3] This is a view from below, illustrating the assembly method. [Figure 4] This is a view from below, showing the assembly process in progress. [Figure 5] This is a view from below, showing the completed assembly. [Figure 6] This figure corresponds to Figure 4 and is an enlarged cross-sectional view of the main part. [Figure 7] This figure corresponds to Figure 5 and is an enlarged cross-sectional view of the main part. [Figure 8] An example of the second block is shown, where (A) is an oblique view, (B) is a plan view, (C) is a right side view, and (D) is a cross-sectional view. [Figure 9] The diagram shows a horizontal pipe, with (A) being a bottom view of the main section and (B) being a cross-sectional view of the main section. [Figure 10] An example of the first block is shown, where (A) is an oblique view, (B) is a plan view, (C) is a right side view, and (D) is a cross-sectional view. [Figure 11] The diagram shows a vertical pipe, with (A) being a front view, (B) being a cross-sectional view of (A) at bb, and (C) being a diagram illustrating the basic shape 11B for explaining the mounting hole 11 shown in (A). [Figure 12] This is a cross-sectional view of the main parts showing the assembly process. [Figure 13] This is a cross-sectional view of the main parts in the completed assembly state. [Figure 14] This is a view looking up from below to show another embodiment and to explain the assembly method. [Figure 15] Another embodiment is shown, a view from below of the completed assembly. [Figure 16] The second block shows other examples, where (A) is a plan view, (B) is a cross-sectional view, (C) is a cross-sectional view of (A), and (D) is a perspective view with the image inverted. [Figure 17] Here are some other examples from the first block: (A) is a plan view, (B) is a cross-sectional view, (C) is a cross-sectional view of (A), and (D) is a perspective view. [Figure 18] Here is another example from the second block: (A) is a plan view, (B) is a cross-sectional view, (C) is a cross-sectional view of (A), and (D) is a perspective view with the image inverted. [Figure 19] Here is another example from the first block, where (A) is a plan view, (B) is a section view, and (C) is a perspective view. [Figure 20] Various modifications of the mounting holes for the vertical pipe and the first block are shown, and the first blocks shown in (A2), (B2), (C2), and (D2) are attached to each of the mounting holes shown in (A1), (B1), (C1), and (D1), respectively. [Figure 21] Figure 20(B1) is a diagram illustrating the mounting hole 11 shown, where (A) is a front view and (B) is a diagram showing the basic shape 11C of the mounting hole 11. [Figure 22] Figure 20(C1) is a diagram illustrating the mounting hole 11 shown, where (A) is a front view and (B) is a diagram showing the basic shape 11C of the mounting hole 11. [Figure 23] This is a perspective view showing a second embodiment. [Figure 24] This is a top-down view diagram illustrating the assembly method. [Figure 25] This is a top-down view showing the assembly process in progress. [Figure 26] This is an enlarged cross-sectional view of a key part showing the assembly process. [Figure 27] This is an enlarged cross-sectional view of the main parts showing the completed assembly state. [Figure 28] This is a perspective view showing the assembled unit with the shelves in place. [Figure 29] This shows another embodiment, an enlarged cross-sectional view of the main part just before assembly is complete. [Figure 30] This is an enlarged cross-sectional view of the main parts showing the completed assembly state. [Figure 31] This is a perspective view showing a third embodiment. [Figure 32] This is a perspective view illustrating the assembly method. [Figure 33] This is a perspective view showing the assembly process in progress. [Figure 34] This is an enlarged cross-sectional view of a key part showing the assembly process. [Figure 35] This is an enlarged cross-sectional view of the main part showing the completed assembly state, where (A) shows an embodiment corresponding to Figure 34, and (B) shows another embodiment. [Figure 36] This is a perspective view from below, showing the assembled unit with the shelves in place. [Modes for carrying out the invention]

[0020] The present invention will be described in detail below based on the illustrated embodiments. Figure 1 shows a first embodiment of the three-dimensional assembly structure Z. The total number of vertical, horizontal, and front-to-back sections can be freely increased or decreased. Applications include cabinets, various metal shelves, and store fixtures, office fixtures, prefabricated furniture, display shelves, showcases, wagons, racks, tables, desks, negotiation booths, information boards, reception desks, etc.

[0021] This three-dimensional assembled structure Z is assembled in a three-dimensional shape using multiple columns 1 and multiple beams 2. The columns 1 are formed from vertical pipes 10, and these vertical pipes 10 are shown as rectangular pipes with a square cross-section (see Figures 1 and 2(B)). The beams 2 are formed from horizontal pipes 20, and these horizontal pipes 20 are also shown as rectangular pipes with a square cross-section (see Figures 1 and 2). In Figures 2(B) and 1, 3 is the connection point between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2. Two, three, or four beams 2 are connected to a single column 1 at the connection point 3. In Figure 2(B), the solid lines show the state in which three beams 2,2,2 are connected to column 1. As shown by the dashed lines, it is also possible to add another beam 2 to connect four beams 2,2,2,2 to column 1.

[0022] The above-mentioned connecting portion 3 will be explained in detail below. As shown in Figures 3, 6, and 11, mounting holes 11 are pre-formed in the vertical pipe 10. A part of the first block (catch component) 5 for support is inserted into these mounting holes 11 and attached. The mounting hole 11 of the vertical pipe 10 described above has a left-right width dimension W, as shown in Figure 11(C). 11 The vertical dimension H 11 It has a large, elongated basic shape 11B, and as shown in Figure 11(A), it has small locking recesses 12, 12 cut out at the vertical center of the elongated basic shape 11B.

[0023] A second block 7 for insertion is inserted and fixed to the end 21 of the horizontal pipe 20. In this invention, this second block 7 is sometimes referred to as a holder component. (Note that the first block 5 is sometimes referred to as a catch component.) Furthermore, the second block (holder component) 7 is fixed so that its outer end surface 7E corresponds to the outermost end surface 22 of the horizontal pipe 20 (cut perpendicular to the longitudinal direction). Alternatively, as shown in Figures 6 and 12, the second block 7 is fixed to the horizontal pipe 20 with screws 13 or the like so that its outer end surface 7E corresponds to a position slightly inward ε from the outermost end surface 22 of the horizontal pipe 20. It is desirable that the slight dimension ε be less than 2 mm.

[0024] Furthermore, a rectangular notch 23 is formed on the lower surface of the end 21 of the horizontal pipe 20, and the protrusion 8 of the second block 7, which is inserted and fixed to the end 21, is exposed downwards, allowing the first block 5 to fit with the protrusion 8, as shown in Figures 7 and 13. Furthermore, the first block (catch component) 5 has an upwardly opening recessed portion 15 (see Figures 6, 7, 10, 12, and 13). On the other hand, the second block (holder component) 7 has a protrusion 8 that is dropped from above into the upper opening recess 15 of the first block 5 (see Figures 6, 7, 8, 12, and 13).

[0025] Furthermore, as the convex portion 8 is lowered into the recessed portion 15 (from above, downward as indicated by arrow F), the horizontal pipe 20 is equipped with a wedge mechanism Y that causes the outermost end surface 22 to gradually approach the vertical pipe 10 and press against it (in the final connected state), as shown in Figures 6 to 7, or Figures 12 to 13. That is, as shown in Figures 6, 7, or 12, 13, this wedge mechanism Y is formed by mutual sliding pressure contact inclined surfaces 9, 16 between the convex portion 8 and the concave portion 15.

[0026] As is clear from Figures 1, 4, 6, and 12, since the outer end surface 7E of the second block 7 does not protrude from the outermost end surface 22 of the horizontal pipe 20, the horizontal pipe 20 can be easily and stably inserted between the vertical pipes 10 in a horizontal position, as shown in Figure 6 or Figure 12. Furthermore, if the horizontal pipe 20 is then lowered by hand in the direction of arrow G (while maintaining a horizontal position), the convex portion 8 will easily, quickly, and smoothly be dropped into the recessed portion 15 (as shown by arrow F), and the outermost end surface 22 of the horizontal pipe 20 will gradually approach the vertical pipe 10 due to the wedge mechanism Y, eventually becoming compressed and fixed.

[0027] Thus, a wedge mechanism Y is formed in the mutual fitting portion K, which consists of a convex portion 8 and a concave portion 15. Furthermore, the surface on which the mounting holes 11 of the vertical pipe 10 are provided is a vertical surface, and moreover, it is the surface on which the outermost end surface 22 of the horizontal pipe 20 is connected in a pressure-bonded state. Therefore, in this invention, it may also be referred to as the "connecting vertical surface P".

[0028] In this way, in a three-dimensional assembled structure Z (as shown in Figure 1) in which two to four horizontal pipes 20 (beams 2) are arranged in the same plane to a single vertical pipe 10 (column 1), the first block 5, the second block 7, and the mounting screws 13 are not visible when viewed from the front, back, left and right sides (to the human eye), as can be seen from Figures 2(B), 5, 7, 13, etc. Therefore, it becomes an aesthetically superior three-dimensional assembled structure, dust does not accumulate in the connecting parts 3, cleaning is easy, there is no risk of injury when touched by human hands, and it can also prevent damage to clothing and objects.

[0029] Next, to explain the first block 5 in more detail, as shown in Figure 10, this first block 5 has a projection 31 with a locking head 30 that can be inserted into the mounting hole 11 (see Figure 11). As shown in Figure 10, the locking head 30 of the projection 31 is elongated in the left-right direction, and is inserted into the mounting hole 11 (which is elongated in the up-down direction) in Figure 11 with the projection 31 rotated by 90°, and then rotated by 90° in the opposite direction to fix (attach) it to the vertical pipe 10 with the recessed portion 15 facing upwards.

[0030] In this fixed (attached) state, when a force F5 in the pulling direction is applied to the first block 5 as shown in Figures 7 and 13, small protrusions 6, 6 are attached to the back surface of the locking head 30 (see Figure 10) that engage with the locking recesses 12, 12 (see Figure 11) of the vertical pipe 10. In this state, the horizontal pipe 20 is kept from rotating (around its axis) relative to the vertical pipe 10. That is, the locking head 30 remains in a state of being prevented from coming loose.

[0031] As shown in Figures 3-5, 6-8, 12, and 13, a nut 32 is fitted onto the second block 7, and a screw 13 is screwed in from below to secure the second block 7 to the end of the horizontal pipe 20 and prevent it from detaching. In the embodiments shown in Figures 12 and 13, a connecting screw 33 is also provided to fasten the second block 7 and the first block 5 together in the assembled state, ensuring a secure and firm connection between the two.

[0032] Next, Figures 14 and 15 show another embodiment, where the vertical pipe 10 and the horizontal pipe 20 are round pipes (with a circular cross-section). The same reference numerals as in Figures 1 to 13 indicate the same configuration, so redundant explanations are omitted. In this invention, the materials for the first block 5 and the second block 7 are preferably synthetic resin, zinc die-cast, sintered alloy, etc.

[0033] Next, Figures 16 and 17 show other embodiments of the second block 7 and the first block 5. As shown in Figure 17, the first block 5 is provided with a truncated pyramidal upward projection 18. That is, the projection 18 protrudes from the horizontal bottom wall piece 19A of the L-shaped base portion 19. In addition, a projection 31 protrudes from the vertical piece 19B of the L-shaped base portion 19, and this projection 31 has a locking head 30 (same as in Figure 10). Of course, this first block 5 is attached to the mounting hole 11 of the vertical pipe 10. On the other hand, as shown in Figure 16, the second block 7 has a downward-opening recessed portion 24 that is fitted onto the protruding convex portion 18 (see Figure 17) of the first block 5 by being dropped in from above.

[0034] Furthermore, as the downwardly opening recessed portion 24 of the second block 7 is fitted onto the protruding portion 18 of the first block 5 from above, a wedge mechanism Y is provided at the interconnected portion 3 (see Figure 1) of the horizontal pipe 20 and the vertical pipe 10, in which the outermost end face 22 of the horizontal pipe 20 is pressed against the vertical pipe 10 while gradually approaching it (see Figures 6 and 7). That is, as shown in Figures 16 and 17, this wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the convex portion 18 and the concave portion 24.

[0035] Next, Figures 18 and 19 show other embodiments of the second block 7 and the first block 5. As shown in Figure 19, shallow, open recesses 25, 25 are formed on the left and right sides of the first block 5, with openings S5 to the side and U5 to the top. On the other hand, as shown in Figure 18, the second block 7 has protrusions 26, 26 that are recessed into the recesses 25, 25 of the first block 5 from above. Specifically, (as shown in Figure 18) a recess 27 into which almost the entire first block 5 is fitted is formed in the second block 7, and the protrusions 26 are provided in the form of plate pieces on the left and right inner surfaces of this recess 27.

[0036] Then, as the convex portion 26 is lowered into the recessed portion 25 from above, the outermost end surface 22 of the horizontal pipe 20 gradually approaches (see Figures 6 and 7) the connecting vertical surface of the vertical pipe 10, and presses against it. This wedge mechanism Y is formed at the mutual fitting portion K of the first block 5 and the second block 7. Specifically, the wedge mechanism Y is formed (configured) by the sliding pressure contact inclined surface 9 of the convex portion 26 (shown in Figures 18 and 19) and the sliding pressure contact inclined surface 16 of the recessed portion 25.

[0037] Thus, in Figures 18 and 19, the sliding contact pressure contact inclined surfaces 9 and 16 are arranged separately on the left and right sides, respectively, and their width dimensions are set to be small. Furthermore, the shape (configuration) of the projection 31 (locking head 30) of the first block 5 in Figures 16 to 19 and the attachment structure to the vertical pipe 10 are the same as the shape (configuration) described in the embodiments of Figures 10 and 11.

[0038] By the way, Figures 20 to 22 show that the shape and orientation (direction) of the projection 31 (locking head 30) of the first block 5, and the shape and orientation (direction) of the mounting hole of the vertical pipe 10, can be modified in the design. Figures 20(A1) and (A2) are the same as those shown in Figures 3, 10, and 11, so a redundant explanation will be omitted. In the other embodiment shown in Figures 20(B1) and (B2), the mounting hole 11 is rotated 90° from that in Figure 20(A1) and is in a horizontal position. That is, the locking head 30 of the first block 5 (inserted into the mounting hole 11) is long in the vertical direction when attached to the vertical pipe 10. It is inserted into the mounting hole 11, which is long in the left-right direction in Figure 20(B1), after being rotated 90° in the opposite direction, and then the first block 5 is fixed (attached) in its normal position.

[0039] In this fixed state, when a force F5 in the pulling direction is applied to the first block 5 as shown in Figures 7 and 13, the small protrusions 6, 6 on the back surface of the locking head 30 engage with the small recesses 12, 12 (upper and lower) shown in Figure 20(B1), thereby preventing the horizontal pipe 20 from rotating around its axis. The shape of the locking head 30 shown in Figure 20(B2) is the same as the shape in Figure 20(A2), and it is attached to the first block 5 after being rotated 90°.

[0040] In other words, in the embodiments shown in Figures 20(B1)(B2) and 21, the mounting holes 11 of the vertical pipe 10 are located within the left-right width dimension W 11 The vertical dimension H 11 The first block 5 has a horizontally elongated basic shape 11C that is larger than the first block 5, and has small locking recesses 12, 12 cut out at the top and bottom of the horizontally elongated basic shape 11C at the left and right center positions, and the first block 5 has a projection 31 with a locking head 30 that can be inserted into the mounting hole 11, and is fixed by rotating it by 90°, and small protrusions 6, 6 that engage with the small locking recesses 12, 12 when a force F5 in the pulling direction is applied to the first block 5 are attached to the back surface of the locking head 30.

[0041] Next, in the embodiments shown in Figures 20(C1)(C2) and 22, the shape of the locking head 30 is that of a stadium track. Otherwise, it is the same as in Figures 20(B1)(B2) and 21 described previously. Furthermore, in Figures 20(D1) and (D2), the shape of the locking head 30 is the same as in the previously described Figures 20(C1) and (C2), but it is arranged rotated by 90°.

[0042] Next, Figures 23 to 30 show a second embodiment of the present invention. The three-dimensional assembled structure Z is assembled into a three-dimensional shape (similar to that in Figure 1) using a plurality of columns 1 and beams 2. Figure 23 shows the case where a plate material (board) 28 is attached in a resting manner. To describe the connecting portion 3 of the three-dimensional assembled structure Z, in Figures 23 to 28, the vertical pipe 10 has mounting holes 11 pre-drilled through it, similar to those in the first embodiment. A part of the first block 5 (projection 31) is inserted into these mounting holes 11 and attached. The second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20. Here, the first block 5 has the shape illustrated in Figure 19, and the second block 7 has the shape illustrated in Figure 18. Accordingly, referring to Figures 18 and 19, and following Figures 26 and 27, one embodiment of the present invention can be described as follows.

[0043] Specifically, at the connection point 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached, and a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20, and moreover, on the left and right sides of the first block 5, open recesses 25, 25 are formed on the sides S5 and downward, and the second Block 7 has a protrusion 26 that is pushed from below into the recessed portions 25, 25, and a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10 as the protrusion 26 is pushed from below into the recessed portions 25, and the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9, 16 of the protrusion 26 and the recessed portions 25. In Figures 25 and 26, arrow F 20 As shown, as the horizontal pipe 20 moves from bottom to top, the convex portion 8 is pushed into the recessed portion 25 from below (as indicated by arrow E8).

[0044] Next, Figures 29 and 30 show other embodiments. Figure 29 shows the state immediately before assembly, and Figure 30 is a cross-sectional view showing the completed assembly state. As shown in Figure 29, the projection 31 of the first block 5 is inserted into the mounting hole 11 of the vertical pipe 10 and attached. In addition, the second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20. As shown in Figures 29 and 30, the second block 7 has an upwardly protruding projection 8 that is pushed in from below (as shown by arrow E8) and fitted into the downwardly opening recess 15L of the first block 5. (Arrow F in Figure 29) 20 In that direction, the horizontal pipe P is pushed upward, and the protrusion 8 enters the recess 15L (from below) as shown by arrow E8. As shown in Figures 24 to 30, the second block 7 is fixed to the first block 5 by screws 14, maintaining a connected state.

[0045] Next, Figures 31 to 36 show a third embodiment of the present invention. The three-dimensional assembled structure Z is assembled with a plurality of columns 1 and beams 2, similar to the first and second embodiments. In Figures 31, 33, and 36, an example is shown in which a plate material (board) 28 is placed in a fitted manner between four beams 2, 2, 2, 2 that form a rectangle in plan view.

[0046] The connection point 3 of the three-dimensional assembled structure Z will be described below. In Figures 31 to 36, a part of the first block 5 (projection 31) is inserted into the mounting hole 11 of the vertical pipe 10 and attached. The second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20. The first block 5 is the shape exemplified in Figure 19, and the second block 7 is the shape exemplified in Figure 18. Accordingly, the embodiments shown in Figures 34 and 35(A) will be described below with reference to Figures 18 and 19.

[0047] Specifically, at the connection point 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached, and a second block 7 for pushing is inserted and fixed to the end 21 of the horizontal pipe 20, and a lateral opening recess 15S is formed in the first block 5, and the second block 7 has an upper A convex portion 8 is provided horizontally to be pushed from the side into the laterally opening recess 15S, and as the convex portion 8 is pushed from the side into the recess 15S, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10, and the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the convex portion 8 and the recess 15S.

[0048] As shown in the plan cross-sectional view of Figure 34, the horizontal pipe 20 is indicated by arrow S. 20As shown, as it moves horizontally, the protrusion 8 of the second block 7 is pushed from the side (as indicated by arrow E8) into the lateral opening recess 15S of the first block 5 fixed to the vertical pipe 10. In other words, it is pushed in the horizontal direction E8. Subsequently, the first block 5 is fixed to the second block 7 with bolts 34, and the horizontal pipe 20 is firmly connected to the vertical pipe 10, as shown in the cross-sectional plan view of Figure 35(A). Furthermore, a short column 36 is attached to the horizontal pipe 20. As shown in Figure 31, a shallow recess 37 is formed in the board 28 from the bottom surface to the middle of the board thickness, as shown in Figure 36. When the board 28 is fitted from above, the short column 36 fits into the recess 37 and supports the board 28.

[0049] Next, another embodiment shown in Figure 35(B) will be described. Figure 35(B) is a plan cross-sectional view showing the completed assembly state. The horizontal pipe 20 is positioned horizontally relative to the vertical pipe 10, as indicated by arrow S. 20 The way the parts are assembled by pushing them in is the same as in Figure 35(A). However, the components are different. Specifically, the parts used to drop the parts in from above, as shown in Figures 12 and 13, are reused in the structure (method) of pushing them in from the side (horizontally), as shown in Figure 35(B).

[0050] As described above, the configurations (assembly methods) for the second block 7 of the horizontal pipe 20, in the first embodiment (Figures 1 to 22), are dropped in from above (downward); in the second embodiment (Figures 23 to 30), they are pushed in from below (upward); and in the third embodiment (Figures 31 to 36), they are pushed in from the side (horizontally), have been explained in detail. The present invention, encompassing these first to third embodiments, can be summarized as follows: That is, in the connection part 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, an attachment hole 11 is formed in the vertical pipe 10, and a part of the first block 5 for receiving is inserted into and attached to the attachment hole 11; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20. When the second block 7 is pushed into the first block 5 from a direction parallel to the connecting vertical plane P where the attachment hole 11 of the vertical pipe 10 is opened, the outermost end face 22 of the horizontal pipe 20 is gradually brought closer to and pressed against the connecting vertical plane P of the vertical pipe 10 by the wedge mechanism Y formed at the mutual fitting part K between the first block 5 and the second block 7; it is configured like this.

[0051] That is, in a direction parallel to the connecting vertical plane P to which the end 21 of the horizontal pipe 20 where the attachment hole 11 is opened is connected (arrow G in FIG. 4, F in FIG. 26 20 , S in FIG. 34 20 reference), the second block 7 is pushed into the first block 5 for assembly, which is the invention of the present application. When dropping from above like arrow G, arrow F 20 when pushing in from below like this, arrow S 20 when pushing in from the horizontal direction (side) like this is included. Furthermore, (although not shown in the figure,) as the direction parallel to the connecting vertical plane P of the vertical pipe 10, it may be an "oblique direction". Or, it is also possible to adopt a configuration in which it operates in a "J-shaped or L-shaped" manner and is pushed in (not shown in the figure).

[0052] As described in detail above, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2; a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 for support is inserted into the mounting hole 11 and attached; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20, and the second block 7 is positioned from a direction parallel to the connecting vertical plane P in which the mounting hole 11 of the vertical pipe 10 is opened, and the first block 7 is positioned from a direction parallel to the first When pushing the horizontal pipe 20 into block 5, the wedge mechanism Y formed in the interlocking portion K of the first block 5 and the second block 7 causes the outermost end face 22 of the horizontal pipe 20 to gradually approach and press against the connecting vertical surface P of the vertical pipe 10. As a result, the vertical pipe 10 (column 1) and the horizontal pipe 20 (beam 2) can be assembled without using any (or almost any) tools, and assembly work can be carried out quickly. Furthermore, the appearance is excellent when assembled, and unnecessary protrusions are eliminated (see Figure 2(B)), so there is no risk of injuring people's hands, clothes, or other items. Moreover, the overall assembly work is easy, and conversely, disassembly (dismantle) and reassembly can also be carried out easily and quickly. As shown in Figures 6 and 7, the horizontal pipe 20 should be held in a horizontal position between the vertical surfaces P, P of the vertical pipes 10, 10, and slid (lowered) in the direction of arrow G. Alternatively, as shown in Figures 29 to 30, the horizontal pipe 20 is held in a horizontal position between the vertical planes P, P of the vertical pipes 10, 10, while arrow F 20 You can slide (raise) it in the direction of arrow S. Alternatively, as shown in Figures 34 to 35, while keeping the horizontal pipe 20 in a horizontal position, hold it between the vertical planes P, P of the vertical pipes 10, 10, and move it in the direction of arrow S. 20 You just need to slide it in that direction (move it horizontally).

[0053] Furthermore, because it is equipped with a wedge mechanism Y, the outermost end face 22 of the horizontal pipe 20 can be smoothly and quickly connected to the vertical connecting plane P of the vertical pipe 10 in a strong, perpendicular pressure contact. This results in an assembled structure with extremely high strength and rigidity, maintaining a stable three-dimensional shape. In addition, the column 1 (vertical pipe 10) and beam 2 (horizontal pipe 20) can be easily and quickly disassembled (and reassembled) for relocation (movement). Moreover, it can be connected with high strength and rigidity in three or four directions (within the horizontal plane).

[0054] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 for support is inserted into the mounting hole 11 and attached; a second block 7 for drop-in is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, the first block 5 has an upwardly opening recessed portion 15, and the second block 7 has a protrusion 8 that is dropped into the upwardly opening recessed portion 15 from above. The vertical pipe 10 is fitted vertically, and as the protrusion 8 is dropped into the recess 15 from above, the outermost end surface 22 of the horizontal pipe 20 gradually approaches and presses against the vertical pipe 10, comprising a wedge mechanism Y. The wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the protrusion 8 and the recess 15, so that the vertical pipe 10 (column 1) and the horizontal pipe 20 (beam 2) can be assembled without using any (or almost any) tools, and assembly work can be done quickly. Furthermore, in the assembled state, the appearance is excellent, and by eliminating unnecessary protrusions (see Figure 2(B)), there is no risk of injuring people's hands, clothes, or other items. Moreover, the overall assembly work is easy, and conversely, disassembly (dismantling) and reassembly can also be done easily and quickly. In addition, it is easy to add intermediate shelves after the shelf structure has been assembled. In other words, as shown in Figures 6 and 7, the horizontal pipe 20 should be held in a horizontal position between the vertical pipes 10, 10, and then slid (descended) in the direction of arrow G.

[0055] Furthermore, it can be used for a wide range of applications, including cabinets, various metal shelves, store fixtures, office fixtures, prefabricated furniture, display shelves, showcases, wagons, racks, tables, desks, negotiation booths, information boards, and reception desks. Moreover, as the convex portion 8 is dropped into the recessed portion 15 from above, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10. Since the wedge mechanism Y is formed by the mutual sliding pressure-contact inclined surfaces 9 and 16 of the convex portion 8 and the recessed portion 15, the outermost end surface 22 of the horizontal pipe 20 can be smoothly and quickly connected to the vertical pipe 10 with strong pressure in a perpendicular direction. As a result, an assembled structure with extremely high strength and rigidity and maintaining a stable three-dimensional shape is obtained. Furthermore, the column 1 (vertical pipe 10) and beam 2 (horizontal pipe 20) can be easily and quickly dismantled (and reassembled) for relocation (movement). In addition, as illustrated in Figures 1 and 2(B), they can be connected in three or four directions (in the horizontal plane) with high strength and rigidity.

[0056] Furthermore, at the connection point 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2; a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 for support is inserted into the mounting hole 11 and attached; a second block 7 for drop-in is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, the first block 5 is provided with an upwardly protruding projection 18, and the second block 7 has a downwardly opening recess that is dropped into and fitted onto the upwardly protruding projection 18 from above. As the downward-opening recessed portion 24 is formed and fitted onto the convex portion 18 from above, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10. The wedge mechanism Y is formed by the mutual sliding pressure-contact inclined surfaces 9 and 16 of the convex portion 18 and the recessed portion 24. As a result, the vertical pipe 10 (column 1) and the horizontal pipe 20 (beam 2) can be assembled without using any (or almost any) tools, and assembly work can be carried out quickly. Furthermore, the appearance is excellent when assembled, and by eliminating unnecessary protrusions (see Figure 2(B)), there is no risk of injuring people's hands, clothes, or other items. Moreover, the overall assembly work is easy, and conversely, disassembly (dismantle) and reassembly can also be carried out easily and quickly. In addition, it is easy to add intermediate shelves after the shelf structure has been assembled. In other words, the horizontal pipe 20 should be held horizontally between the vertical pipes 10, 10 and slid downwards.

[0057] Furthermore, it can be used for a wide range of applications, including cabinets, various metal shelves, store fixtures, office fixtures, prefabricated furniture, display shelves, showcases, wagons, racks, tables, desks, negotiation booths, information boards, and reception desks. Moreover, as the recessed portion 24 is fitted onto the protruding portion 18 from above, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10. Since the wedge mechanism Y is formed by the mutual sliding pressure-contact inclined surfaces 9 and 16 of the protruding portion 18 and the recessed portion 24, the outermost end surface 22 of the horizontal pipe 20 can be smoothly and quickly connected to the vertical pipe 10 with strong pressure in a perpendicular direction. As a result, an assembled structure with extremely high strength and rigidity and maintaining a stable three-dimensional shape is obtained. Furthermore, the column 1 (vertical pipe 10) and beam 2 (horizontal pipe 20) can be easily and quickly dismantled (and reassembled) for relocation (movement). In addition, as illustrated in Figures 1 and 2(B), they can be connected in three or four directions (in the horizontal plane) with high strength and rigidity.

[0058] Furthermore, at the connection point 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2; a mounting hole 11 is formed in the vertical pipe 10, and a part of the first support block 5 is inserted into the mounting hole 11 and attached; a second block 7 for recessing is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, recessed portions 25, 25 with openings lateral S5 and upward U5 are formed on the left and right sides of the first block 5, and the second block 7 has protrusions that are recessed from above into the recessed portions 25, 25 The structure is equipped with a wedge mechanism Y in which, as the convex portion 26 is dropped into the concave portion 25 from above, the outermost end surface 22 of the horizontal pipe 20 gradually approaches and presses against the vertical pipe 10; the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9, 16 of the convex portion 26 and the concave portion 25, so that the vertical pipe 10 (column 1) and the horizontal pipe 20 (beam 2) can be assembled without using any (or almost any) tools, and assembly work can be done quickly. Furthermore, in the assembled state, the appearance is excellent, and by eliminating unnecessary protrusions, there is no risk of injuring people's hands, clothes or other items. Furthermore, the overall assembly work is easy, and conversely, disassembly (dismantle) and reassembly can also be done easily and quickly. In addition, it is easy to add intermediate shelves after the shelf structure has been assembled. In other words, the horizontal pipe 20 should be held horizontally between the vertical pipes 10, 10 and slid downwards.

[0059] Furthermore, it can be used for a wide range of applications, including cabinets, various metal shelves, store fixtures, office fixtures, prefabricated furniture, display shelves, showcases, wagons, racks, tables, desks, negotiation booths, information boards, and reception desks. Moreover, as the convex portion 26 is dropped into the concave portion 25 from above, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10. Since the wedge mechanism Y is formed by the mutual sliding pressure-contact inclined surfaces 9 and 16 of the convex portion 26 and the concave portion 25, the outermost end surface 22 of the horizontal pipe 20 can be smoothly and quickly connected to the vertical pipe 10 with strong pressure in a perpendicular direction. As a result, an assembled structure with extremely high strength and rigidity and maintaining a stable three-dimensional shape is obtained. Furthermore, the column 1 (vertical pipe 10) and beam 2 (horizontal pipe 20) can be easily and quickly dismantled (and reassembled) for relocation (movement). In addition, as illustrated in Figures 1 and 2(B), they can be connected in three or four directions (in the horizontal plane) with high strength and rigidity.

[0060] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, a downwardly opening recess 15L is formed in the first block 5, and the second block 7 is positioned downward relative to the downwardly opening recess 15L A protrusion 8 is provided that is pushed in from below; and as the protrusion 8 is pushed into the recess 15L from below, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10; and since the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the protrusion 8 and the recess 15L, the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figure 29, arrow F 20 The horizontal pipe 20 should be moved in that direction. Furthermore, when viewed from below by a person, the notches and bolt heads are completely invisible, resulting in superior aesthetics. Therefore, it can be said that this is particularly aesthetically preferable for three-dimensional assembled structures installed at high altitudes that are viewed from below by a person.

[0061] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, a downwardly opening recess 15L is formed in the first block 5, and the second block 7 is pushed from below into the downwardly opening recess 15L The horizontal pipe 20 has an upwardly protruding projection 8 that is fitted inside, and as the projection 8 is fitted from below into the downwardly opening recess 15L, the outermost end surface 22 of the horizontal pipe 20 gradually approaches and presses against the vertical pipe 10, and the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the projection 8 and the recess 15L, so that the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figure 26, arrow F 20 The horizontal pipe 20 should be moved in that direction. Furthermore, when viewed from below, the notches and bolt heads are completely invisible, resulting in superior aesthetics. Therefore, it is suitable for three-dimensional assembled structures installed at high altitudes that are viewed from below.

[0062] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, on the left and right sides of the first block 5, open recesses 25, 25 are formed on the sides S5 and downward, and the second block 7 is provided with respect to the recesses 25, 25 Thus, a protrusion 26 is formed that is pushed in from below; and as the protrusion 26 is pushed in against the recess 25 from below, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10; and since the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9,16 of the protrusion 26 and the recess 25, the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figure 26, arrow F 20 The horizontal pipe 20 should be moved in that direction. Furthermore, when viewed from below, the notches and bolt heads are completely invisible, resulting in superior aesthetics. Therefore, it is suitable for three-dimensional assembled structures installed at high altitudes that are viewed from below.

[0063] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second push-in block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, a laterally opening recess 15S is formed in the first block 5, and the second block 7 is laterally... A protrusion 8 is provided that is pushed in horizontally; as the protrusion 8 is pushed in from the side against the recess 15S, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10; the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the protrusion 8 and the recess 15S, so that the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figures 34 and 35, arrow S 20 The horizontal pipe 20 can be moved in the direction indicated by arrow S. Furthermore, this is suitable for a three-dimensional assembled structure that can be viewed only from the front, above, and below, where the horizontal pipe 20 is moved from front to back. 20 Simply push it in like this. (The notch and bolt head will be hidden on the back (rear) side.) Furthermore, as shown in Figures 31 and 36, fitting the board 28 makes the notches and bolt heads completely invisible (from any direction), which is desirable. In addition, the overall rigidity is improved.

[0064] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second push-in block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, the first block 5 is provided with a laterally protruding projection 18, and the second block 7 is pushed outwards from the horizontal direction relative to the laterally protruding projection 18. A lateral opening recess 24 is formed into which the pipe is fitted. As the lateral opening recess 24 is fitted onto the convex portion 18 from the horizontal direction, a wedge mechanism Y is provided which causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10. This wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9 and 16 of the convex portion 18 and the recess 24. As shown in Figures 16 and 17, the pipes can be reliably joined from the side (horizontally) using simple parts. Moreover, the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figures 34 and 35, arrow S 20 The horizontal pipe 20 can be moved horizontally in the direction indicated by arrow S. Furthermore, this is suitable for a three-dimensional assembled structure that can only be viewed from the front, above, and below, where the horizontal pipe 20 is moved from front to back by arrow S. 20 Simply push it in like this. (The notch and bolt head will be hidden on the back (rear) side.) Furthermore, as shown in Figures 31 and 36, fitting the board 28 makes the notches and bolt heads completely invisible (from any direction), which is desirable. In addition, the overall rigidity is improved.

[0065] Furthermore, in the present invention, at the connection portion 3 between the vertical pipe 10 forming the column 1 and the horizontal pipe 20 forming the beam 2, a mounting hole 11 is formed in the vertical pipe 10, and a part of the first block 5 is inserted into the mounting hole 11 and attached; a second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20; moreover, on the left and right sides of the first block 5, open recesses 25, 25 are formed to the side S5 and downward, and the second block 7 is provided with respect to the recesses 25, 25 from the horizontal direction The pipe is equipped with a wedge mechanism Y that, as the protrusions 26, 26 are pushed into the recessed portion 25 from the horizontal direction, causes the outermost end surface 22 of the horizontal pipe 20 to gradually approach and press against the vertical pipe 10; and since the wedge mechanism Y is formed by the mutual sliding pressure contact inclined surfaces 9, 16 of the protrusions 26 and the recessed portion 25, a reliable connection from the side (horizontal direction) can be made with simple parts as illustrated in Figures 18 and 19 (see Figures 32 to 34). Moreover, the vertical pipe 10 and the horizontal pipe 20 can be assembled easily and quickly without using any tools. That is, as shown in Figures 34 and 35, arrow S 20 The horizontal pipe 20 can be moved in the direction indicated by arrow S. Furthermore, this is suitable for a three-dimensional assembled structure that can be viewed only from the front, above, and below, where the horizontal pipe 20 is moved from front to back. 20 Simply push it in like this. (The notch and bolt head will be hidden on the back (rear) side.) Furthermore, as shown in Figures 31 and 36, fitting the board 28 makes the notches and bolt heads completely invisible (from any direction), which is desirable. In addition, the overall rigidity is improved.

[0066] Furthermore, when the second block 7 is inserted and fixed to the end 21 of the horizontal pipe 20, the second block 7 is fixed such that its outer end surface 7E is at the same position as or slightly inward from the outermost end surface 22 of the horizontal pipe 20 by a small amount of ε. As a result, the outermost end surface 22 of the horizontal pipe 20 is tightly pressed against the vertical pipe 10. Consequently, the strength and rigidity of the connecting portion 3 are increased, the appearance is also improved, and it is possible to prevent injury to people's hands or clothing.

[0067] Furthermore, the mounting hole 11 of the vertical pipe 10 has a left-right width dimension W 11 The vertical dimension H 11 The first block 5 has a large vertically elongated basic shape 11B, and at the vertical center of the vertically elongated basic shape 11B, small locking recesses 12, 12 are cut out on the left and right sides respectively; the first block 5 has a projection 31 with a locking head 30 that can be inserted into the mounting hole 11, and is fixed by rotating it by 90°, and when a force F5 in the pulling direction is applied to the first block 5, small protrusions 6, 6 that engage with the locking recesses 12, 12 are attached to the back surface of the locking head 30, so that when a force F5 in the pulling direction is applied, the horizontal pipe 20 does not rotate around its axis, and therefore the first block 5 does not come out of the mounting hole 11, and the horizontal pipe 20 and the vertical pipe 10 can maintain a stable connection (at the connection part 3) (see Figures 10 and 11).

[0068] Furthermore, the mounting hole 11 of the vertical pipe 10 has a left-right width dimension W 11 The vertical dimension H 11 The first block 5 has a horizontally elongated basic shape 11C that is larger than the first block 5, and has small locking recesses 12, 12 cut out at the top and bottom of the horizontally elongated basic shape 11C at the left and right center positions; the first block 5 has a projection 31 with a locking head 30 that can be inserted into the mounting hole 11, and is fixed by rotating it by 90°, and when a force F5 in the pulling direction is applied to the first block 5, the small locking recesses 12, 12 engage Since the interlocking small protrusions 6, 6 are attached to the back surface of the locking head 30, when a force F5 in the pulling direction is applied, the horizontal pipe 20 does not rotate around its axis, and therefore the first block 5 does not come out of the mounting hole 11, and the horizontal pipe 20 and the vertical pipe 10 can maintain a stable connection (at the connection point 3) (see Figures 21, 22 and Figure 20(B1)(B2)(C1)(C2)).

[0069] Furthermore, in a three-dimensional assembled structure having numerous connecting parts 3 in which two to four horizontal pipes 20 are arranged in the same plane as one vertical pipe 10, the first block 5, the second block 7 and the mounting screws are assembled in such a way that they are not visible when viewed from the front, back, left and right sides, and above. As a result, the three-dimensional assembled structure exhibits a simple aesthetic appeal, has a superior appearance, and, unlike conventional structures, has no protruding parts, eliminating the risk of injuring a person's hand or damaging clothing or other items.

[0070] Furthermore, in a three-dimensional assembled structure having numerous connecting points 3 in which two to four horizontal pipes 20 are arranged in the same plane as one vertical pipe 10, the first block 5, the second block 7, and the mounting screws are assembled in such a way that they are not visible when viewed from below. Therefore, when the three-dimensional assembled structure is installed at a high place where it can be viewed from below, it exhibits a simple aesthetic and has an excellent appearance. Alternatively, when separate three-dimensional assembled structures are stacked vertically, installing it on the top level can give a simple aesthetic when viewed from below. [Explanation of Symbols]

[0071] 1 Pillar 2 beams 3 Connection part 5. Block 1 6 Small protrusions 7. Block 2 7E Outer end surface 8. Convex part 9. Sliding pressure contact inclined surface 10 Vertical pipes 11 mounting holes 11B Vertical basic shape 11C Horizontal basic shape 12 Small recess for locking 15 Recessed area 15L downward opening concave part 15S Side opening recess 16. Sliding pressure contact inclined surface 18 Upward protruding convex portion 20 Horizontal pipes 21 End 22 Outermost surface 24 Downward opening recess 25 Recessed area 26 Convex part 30 Locking head F5 Pull-out Directional Force H 11 Height K Mutual mating area P vertical plane W 11 Width dimensions Y-shaped wedge mechanism ε infinitesimal dimension

Claims

1. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the above-mentioned vertical pipe (10), and a part of the first block (5) for support is inserted into the mounting holes (11) and attached. A second block (7) for dropping into place is inserted and fixed to the end (21) of the horizontal pipe (20) mentioned above. Furthermore, the first block (5) has an upwardly opening recess (15) formed therein, and the second block (7) has a protrusion (8) that is lowered from above into the upwardly opening recess (15). As the convex portion (8) is lowered into the concave portion (15) from above, the outermost end surface (22) of the horizontal pipe (20) gradually approaches and presses against the vertical pipe (10) by a wedge mechanism (Y), which is provided. The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (8) and the concave portion (15).

2. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2) Mounting holes (11) are formed in the above-mentioned vertical pipe (10), and a part of the first support block (5) is inserted into the mounting holes (11) and attached. A second block (7) for dropping into place is inserted and fixed to the end (21) of the horizontal pipe (20) mentioned above. Moreover, on each of the left and right sides of the first block (5) above, there is a lateral (S 5 ) and above (U 5 Open recesses (25) (25) are formed in the second block (7), and protrusions (26) (26) are formed in the second block (7) that are recessed from above into the recesses (25) (25). As the convex portion (26) is lowered into the concave portion (25) from above, the outermost end surface (22) of the horizontal pipe (20) gradually approaches and presses against the vertical pipe (10) in a wedge mechanism (Y), which is provided. The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (26) and the concave portion (25).

3. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the vertical pipe (10), and a part of the first block (5) is inserted into the mounting holes (11) and attached. The end (21) of the horizontal pipe (20) is fitted with the second block (7). Furthermore, the first block (5) has a downwardly opening recess (15L) formed therein, and the second block (7) has a protrusion (8) that is pushed from below into the downwardly opening recess (15L). The above-mentioned convex portion (8) is pushed from below into the above-mentioned recessed portion (15L), and a wedge mechanism (Y) is provided which causes the outermost end surface (22) of the horizontal pipe (20) to gradually approach and press against the vertical pipe (10). The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (8) and the concave portion (15L).

4. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the vertical pipe (10), and a part of the first block (5) is inserted into the mounting holes (11) and attached. The end (21) of the horizontal pipe (20) is fitted with the second block (7). Furthermore, the first block (5) has a downwardly opening recess (15L) formed therein, and the second block (7) has an upwardly protruding convex portion (8) that is pushed in from below and fitted into the downwardly opening recess (15L), and a wedge mechanism (Y) is provided which causes the outermost end surface (22) of the horizontal pipe (20) to gradually approach and press against the vertical pipe (10) as the convex portion (8) is fitted outwards from below into the downwardly opening recess (15L), and the wedge mechanism (Y) is formed by the mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (8) and the recess (15L).

5. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the vertical pipe (10), and a part of the first block (5) is inserted into the mounting holes (11) and attached. The end (21) of the horizontal pipe (20) is fitted with the second block (7). Moreover, on each of the left and right sides of the first block (5) above, there is a lateral (S 5 ) and an open recess (25) (25) is formed below, and the second block (7) has a protrusion (26) that is pressed from below into the recess (25) (25), The above-mentioned convex portion (26) is pushed into the above-mentioned recessed portion (25) from below, and the outermost end surface (22) of the horizontal pipe (20) is pressed against the vertical pipe (10) by a wedge mechanism (Y), which is provided, The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (26) and the concave portion (25).

6. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the vertical pipe (10), and a part of the first block (5) is inserted into the mounting holes (11) and attached. A second push-in block (7) is inserted and fixed to the end (21) of the horizontal pipe (20) mentioned above. Furthermore, the first block (5) has a laterally opening recess (15S) formed therein, and the second block (7) has a protrusion (8) that is pushed from the side into the laterally opening recess (15S) and protrudes horizontally. As the convex portion (8) is pushed from the side into the concave portion (15S), a wedge mechanism (Y) is provided which causes the outermost end surface (22) of the horizontal pipe (20) to gradually approach and press against the vertical pipe (10). The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (8) and the concave portion (15S).

7. At the connection point (3) between the vertical pipe (10) forming the column (1) and the horizontal pipe (20) forming the beam (2), Mounting holes (11) are formed in the vertical pipe (10), and a part of the first block (5) is inserted into the mounting holes (11) and attached. The end (21) of the horizontal pipe (20) is fitted with the second block (7). Moreover, on each of the left and right sides of the first block (5) above, there is a lateral (S 5 ) and downward opening recesses (25) (25) are formed, and the second block (7) has protrusions (26) (26) that are pressed horizontally into the recesses (25) (25), The above-mentioned convex portion (26) is pressed horizontally against the above-mentioned recessed portion (25), and the outermost end surface (22) of the horizontal pipe (20) is provided with a wedge mechanism (Y) that gradually approaches and presses against the vertical pipe (10), The wedge mechanism (Y) is a three-dimensional assembled structure characterized by being formed by mutual sliding pressure contact inclined surfaces (9) (16) of the convex portion (26) and the concave portion (25).

8. In a three-dimensional assembled structure having multiple connecting points (3) in which two to four horizontal pipes (20) are arranged in the same plane as one vertical pipe (10), The three-dimensional assembled structure according to claim 3, 4, or 5, wherein the first block (5), the second block (7), and the mounting screws are assembled in such a way that they are not visible when viewed from below.

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