JP5438701B2 - Support structure - Google Patents

Description

The present invention relates to a column structure such as a table, furniture, or display shelf, and to a column structure provided with a lock mechanism so that the column can be attached and detached with one touch when the column is erected on a top plate or / and a bottom plate. Specifically, the columns or display shelves are assembled by instantly setting up the columns on the top plate or / and the bottom plate, for example, opening a special sales floor or setting up an exhibition by arranging the tables, after which the period expires It is a strut structure that makes it possible to instantly remove and disassemble the strut and quickly prepare for the next venue. The strut locking mechanism is difficult to come off due to impact, etc., and the strut can be disassembled instantly. It relates to the strut structure.

Conventionally, a table with a detachable leg or column is known, and a method of fixing a seat plate attached to the upper end of the leg to the back of the bottom plate of the table using a bolt and nut is detachable. It was. In addition, in the case of a table or the like, a method of connecting the bottom plate and the leg with a hinge so that the leg can be folded has been performed. On the other hand, because the land is small in Japan, stores are made according to the size and shape of the land. And as many products as possible are arranged in stores of limited size. Therefore, a table, a display shelf, etc. are arranged and products are arranged three-dimensionally to increase the efficiency of product display per unit area. Also, the display is not fixed throughout the year, and the layout in the store changes, for example, opening a special sales floor every season, every month, or every week. For this reason, the number of tables and display shelves is different, and product items to be handled and display positions inevitably change. Therefore, the layout of the tables and display shelves will be examined by leasing. In other words, the tables and display shelves are not fixed and will be returned when they are used. Therefore, it is required to assemble or disassemble the column in a short time for the table or the display shelf. Therefore, conventionally, a connection structure is adopted in which a nut is welded to one bottom plate for standing a table and a display shelf, and a bolt is welded to the tip of the other support column, and the support column is screwed to the bottom plate. And it is performed that a shelf board is stacked between support | pillars and a display shelf is comprised. After use, loosen the screw and disassemble it into a bottom plate and a column.

Many ideas have been made for such a display shelf, and the invention relating to the following column structure has been proposed. In addition, a table having a detachable column is known. This uses a method in which a seat plate attached to the upper end of the leg is detachably fixed to the back surface of the bottom plate of the table using bolts and nuts. In addition, in the case of a table or the like, a method of connecting the bottom plate and the leg with a hinge so that the leg can be folded has been performed. The applicant of the present invention can easily remove the legs from the furniture main body when the furniture is not used, and it is convenient for storage and movement of the furniture. An invention relating to a structure for attaching a leg of a furniture such as a table that can be attached to a leg has been proposed (Patent Document 1). This patent document is a structure for detachably attaching a leg portion of a furniture such as a table to a furniture body such as a bottom plate, and has a bottomed short cylindrical fitting projection facing downward on a base to be fixed to the furniture body. A fixed portion provided on the upper end of the leg portion, and a fixed portion having a fitting hole for tightly fitting the fitting projection. A slit extending in the radial direction is provided, and the upper surface of the bottom surface is formed on an inclined surface gently inclined upward in the cylinder circumferential direction from both side ends of the slit, and is fitted into the slit at the bottom of the fitting hole. A hooking member provided with a hooking portion that is in contact with the slope at the upper end thereof, and the hooking portion is inserted through the slit and the leg portion is rotated around its axis. And the latching portion gradually tightens the slope, and the front fixing portion A structure in which the fixed portion is firmly engaged.

Japanese Patent No. 3474265

As described above, the conventional table and shelf support structure has the following problems.

That is, the first problem of the conventional support structure is that the structure is complicated, so that the support cannot be attached to or removed from the top plate in a short time. Therefore, when the table or the display shelf is a leased property, it is not possible to meet the needs of customers who want to disassemble the top plate and support in a short time and carry it. In addition, since one or more nuts are tightened on each column, the work of unscrewing is extremely complicated, and a large number of tables and display shelves require a lot of time and manpower. For this reason, since it takes time to disassemble the column, it is not possible to prepare a venue for the next sale at an exhibition hall or a special sales floor.

In particular, Patent Document 1 is a proposal related to a support structure including a fixing jig that applies the principle of a wedge to a support or a top plate. Details will be described with reference to FIG. As shown in FIG. 9A, a state in which the rotating portion 620 is fixed to the fixing portion 610 is shown, which is a connection mechanism. The lock rod 67 constituting the rotating unit 620 has a shape in which a short metal vertical bar 672 is coupled in a T shape at the center of an elongated metal locking bar 671, and the base of the vertical bar 672 is passed. The center of the plate 65 is welded and fixed. That is, at the center portion of the transfer plate 65, a lock rod 67 for hooking the fixed portion 610 and the rotating portion 620 is erected in a T-shape. Here, the diameter of the vertical bar 672 is 12 to 20 mm, the diameter of the locking bar 671 is 6 to 12 mm, and the length is 15 to 100 mm depending on the diameter of the column 2. The T-shaped horizontal locking bar 671 enters and locks into the helical surface S1 inclined like a wedge, and the rotating part 620 is fixed to the fixed part 610. Therefore, the vertical bar 672 has a height so that the lower surface of the locking bar 671 barely protrudes from the spiral surface S1 without interfering with the spiral surface S1 with the locking bar 671 inserted into the opening hole 64. Set the height dimension. The details of each are shown in FIGS. 2B and 2C, and the lower rotating portion 620 is configured at the tip of the column 2. As shown in FIG. 4B, the fixing portion 610 has a base 61, a short cylindrical fitting protrusion 63 recessed in the back side direction of the figure in the center, a bottom surface 62 thereof, and an opening hole drilled in the center portion. 64. Here, the thickness of the base 61 is 3.2 mm, 4.5 mm, 6.0 mm, or the like. On the other hand, the rotation part 620 of FIG. 5C is configured at the upper end of the support column 2, a fitting part 66 that shares the inner peripheral part of the support column 2, a transfer plate 65 in the inner peripheral diameter direction, and a central part thereof. A lock rod 67 is erected. The thickness of the transfer plate 65 is 4.5 mm, 6.0 mm, 9.0 mm, or the like. This strut structure can instantly fix the strut to the top plate or the bottom plate, and once attached, its mounting strength is also high, so it is very convenient to use, but as a result of subtle dimensional errors in manufacturing, it is meshing between metals, If it is attached and tightened too much, galling occurs between the metals, and this time, the column cannot be detached from the top plate or the bottom plate and separated. While being used as a table, it cannot be disassembled and stored or leased items cannot be returned. For this reason, the ease of assembly or disassembly is required for the table or display shelf of the leased item.

Therefore, the column structure of the present invention is made to solve such a conventional problem, and the object of the present invention is to support the column on the top plate or the bottom plate when using the table as a stand. It is attached very easily and firmly, and after it has been used, the column is removed from the top plate without galling or the like to facilitate storage, transportation or transportation. Therefore, to provide a strut structure in which the lock mechanism is devised in order to perform mounting and dismounting of the struts as easily, quickly and surely as possible with one touch, and that there is no possibility of unlocking due to unexpected shocks, etc. With the goal. That is, the column structure of the table or display shelf according to the present invention is that the column is attached to the top plate or the bottom plate very easily and firmly when used in a standing position. An object of the present invention is to provide a strut structure that can be removed from the rack and facilitates storage, transportation, and transportation.

Therefore, the present inventors have conceived that the principle of screw fastening is applied as a means for detachably fixing the column to the bottom plate instantly, and a prototype was made based on this idea, and the knowledge that it was very convenient to use was obtained. It was. The display shelf of the present invention is embodied on the basis of such knowledge, and the invention of claim 1 is a column structure in which a rotating part is fitted to a fixing part, wherein the fixing part has a concave first base and a concave shape. Each of these recesses face each other and a cavity is formed between them, the fixing portion is fixed to the top plate and / or the bottom plate, and a fitting projection is provided on the first substrate. In addition, an opening hole is formed in the bottom surface of the fitting protrusion, and spiral surfaces that are gently inclined are formed on both sides of the opening hole, respectively, while the rotating portion is a tip end portion of a column made of a cylindrical tube. The connecting plate is bridged in the diameter direction of the tip, and a T-shaped lock rod is erected substantially at the center of the connecting plate, and the fitting protrusion of the first base on the fixed part side Is inserted into the tip portion on the rotating portion side, and the locking rod of the T-shaped lock rod By inserting the opening into the opening hole in the bottom surface and rotating the support column around the axis, the rotating portion is locked to the fixed portion while the locking rod is fastened to the spiral surface. The support structure is characterized in that a winding spring, a washer, and a T-shaped lock rod are stacked in this cavity in order from the second base side. The invention of claim 2 is characterized in that, in addition to the above feature of the invention of claim 1, a built-up portion is provided on the spiral surface.

According to the support structure of the present invention, there are excellent practical effects as listed below. First, in order to attach or remove the column to or from the top plate or / and the bottom plate, the fitting protrusion of the fixed portion fixed to the top plate or / and the bottom plate is used as the fitting portion of the rotating portion at the upper end of the column. It is sufficient to turn the column in the forward and reverse direction after it is fitted in. Therefore, compared with the prior art in which the columns are connected using bolts and nuts, the column can be attached and detached much more easily and quickly with almost one-touch operation. Moreover, the troublesomeness of storing the removed nut is eliminated. In addition, it is not necessary to use any attaching / detaching tools such as a spanner. And since a lock rod bites into a spiral surface by the wedge action of the slope formed in the fitting protrusion, the fixed part and the rotation part can secure sufficient connection strength, and can prevent wobbling of a support | pillar. In particular, after the column is fixed to the top plate and / or the bottom plate, even if it is overtightened, the contact between the metals is alleviated by the elastic force of the attached spring, so that the column can be mounted on the ceiling without causing galling. The greatest effect of the present invention is that it can be easily separated from the plate or the bottom plate.

It is a perspective view of the table which concerns on Example 1 of this invention. FIG. 2 is a cross-sectional view of the fixing bracket in FIG. FIG. 3 is an exploded view of the fixture component. It is a component drawing of the base of a fixture, and a rotation part same as the above. It is a figure which shows the other embodiment of a fixed metal base same as the above. It is a perspective view of the table which concerns on Example 2 of this invention. It is a component drawing of a top plate and a baseplate same as the above. It is a perspective view of the table which concerns on Example 3 of this invention. It is an assembly figure and parts drawing of a fixture concerning a conventional example.

Embodiments of the present invention will be specifically described below based on the embodiments of the present invention shown in the accompanying drawings.

First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a table according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the fixing bracket in FIG. FIG. 3 is an exploded view of the fixture component. FIG. 4 is a component diagram for each base or rotating part of the fixing bracket. FIG. 5 is a view showing another embodiment of the base in the fixture.

Hereinafter, an embodiment in which a fixing bracket is applied to a table used in various event venues will be described with reference to the drawings. The four columns 2 of the table 100 shown in FIG. 1 are fixed to the four corners of the back surface of the top plate 1 using fixing brackets 6, and the columns 2 are detachably installed. A height adjuster 9 is provided at the lower end of the column 2.

As shown in FIG. 2 which is a cross-section of the fixing bracket that is the main part, the fixing bracket 6 is configured as follows. That is, the fixing bracket 6 is configured such that the shell closes the lid by facing the respective recesses of the first base 61 recessed downward to the second base 62 recessed upward. The upper second base 62 is accommodated in the recess of the top plate 1, and the first base 61 is screwed to the top plate 1 from below so that the first base 61 faces from below, and a cavity is formed in these. And the fitting protrusion 63 by the side of the 1st base | substrate 61 is fitted and inserted in the inner periphery of the front-end | tip part of the support | pillar 2. As shown in FIG. The large-diameter side of the winding spring 68 is accommodated upward so as to be in contact with the ceiling portion on the second base 62 side of the cavity, and a disk-shaped washer 69 sandwiches the winding spring 68 on the small-diameter side of the winding spring 68. The T-shaped lock rod 67 pushes up this lower surface. That is, the winding spring 68, the washer 69, and the lock rod 67 are stacked in this order from the second base 62 side in a cavity formed so that the concave first base 61 is opposed to the concave second base 62 so as to close the lid of the shell. Be dressed. The T-shaped lock rod 67 includes a horizontal lock rod 671 and a vertical rod 672 that intersects the central portion at a right angle, and the lower end portion of the vertical rod 672 is fixed to the transfer plate 65. The transfer plate 65 is welded at right angles to the inner peripheral surface of the support column 2, and the vertical bar 672 passes through the opening hole 64 of the first base 61 from below. The lower rotating portion 610 is configured at the tip end of the column 2. As described above, the fixing bracket 6 includes the upper fixing portion 620 including the second base 62 and the first base 61, and the lower rotating portion 620 in which the lock rod 67 is welded to the support 2.

Next, FIG. 3 shows an exploded component diagram of the fixture 6. (A) shows the second base, (b) shows the winding spring, (c) shows the washer, (d) shows the first base, and these are the fixing parts. Configure. FIG. 4E shows the rotating part. The second base 62 in FIG. 6A is a press-formed one metal plate and has a disk shape that is concave upward. FIG. 4B shows a winding spring 68, which is a truncated cone-shaped spring whose diameter increases upward from a lower small diameter portion. FIG. 4C shows a washer 69 made of a disk-shaped metal plate. The first base 61 in FIG. 4 (d) is formed by press-molding a single metal plate, has a disk shape that is concave downward, and has an irregularly shaped opening hole 64 at the center (see FIG. 4 described later). ). The winding spring 68 is sandwiched between the bottom surface 621 of the upper second base 62 and the lower washer 69 in the cavity where the shell is closed from above and below by the second base 62 and the first base 61. . FIG. 5 (e) shows a rotating portion 620, which is constructed in the vicinity of the upper end of the inner periphery of the column 2 made of a cylindrical tube. A transfer plate 65 is welded at a right angle to the inner peripheral surface of the support column 2 below the upper end of the support column 2, and a vertical bar 672 is fixed upright at the center of the transfer plate 65. 671 is configured. The lock rod 67 is formed in a T shape from a vertical rod 672 and a locking rod 671.

The first base 61 on the fixed part 610 side is shown in FIG. 4A, and the first base 61 has a rectangular upper surface 611 and an inclined surface 613 that is recessed toward the back side of the paper surface at the center, and the peripheral portion of the upper surface 611. There are four screw holes on the top. An inclined surface 613 that is recessed toward the back side of the paper surface is projected in a short cylindrical shape, and an opening hole 64 is formed in the recessed bottom surface of the inclined surface 613 so that the elongated hole crosses substantially the center in the radial direction. As shown in the drawing, the opening hole 64 includes a central circular hole 641 and a radial elongated hole 642 intersecting with the central hole 641. The spiral surfaces S1 and S1 are formed so as to be gently inclined above and below the opening hole 64, respectively. That is, in the upper half portion, the spiral surface S1 descends from the left end portion of the high surface while being gently inclined in the direction Y1, while in the lower half portion, the spiral surface S1 extends from the right end portion of the high surface in the direction Y2. Descent while gently tilting in the direction of. Thus, the spiral surfaces S1 and S1 are inclined so as to be twisted in the direction Y1 or Y2, respectively.

On the other hand, the rotating portion 620 shown in FIG. 4B is configured in the vicinity of the distal end portion of the inner periphery of the column 2. That is, the fitting protrusion 63 which is the outer portion of the portion of the fixing portion 620 that is recessed downward from the bottom surface 611 of the first base 61 is fitted into the fitting portion 66 at the tip of the support column 2 (see FIG. 2). At a position that enters only a predetermined dimension from the tip of the fitting portion 66, the transfer plate 65 is welded in a bridging manner at right angles to the inner peripheral surface of the support column 2, and the transfer plate 65 is connected to the fitting portion 66. The dead end.

The state of fixing the rotating portion 620 to the fixed portion 610 will be described in detail with reference to FIG. 2 again. The lock rod 67 constituting the rotating portion 610 has a form in which a short metal vertical rod 672 is fixed in a T-shape at the center of a horizontal elongated metal locking rod 671, and the root of the vertical rod 672 is provided. Is welded to the center of the transfer plate 65. That is, at the center portion of the transfer plate 65, a lock rod 67 for hooking the fixed portion 610 and the rotating portion 620 is erected in a T-shape. Here, the dimensions of the lock rod 67 are, for example, a diameter of the vertical rod 672 of 12 to 20 mm, a diameter of the locking rod 671 of 6 to 12 mm, and a length of 15 to 100 mm depending on the diameter of the support column 2. is there. The T-shaped horizontal locking bar 671 enters and locks into the helical surface S1 inclined like a wedge, and the rotating part 620 is fixed to the fixed part 610. Therefore, with the horizontal locking rod 671 inserted through the elongated hole 642 of the opening hole 64, the lower surface of the locking rod 671 barely protrudes above the spiral surface S1 without interfering with the spiral surface S1. The length dimension of the vertical bar 672 is set.

Here, an example of the product specification of the table 100 is shown. The top plate 1 is made of wood, and a single plate, a plywood, or a plywood having a particle board using a waste material as a core is used, and stainless steel, polyethylene, polypropylene resin, or the like may be used. The support column 2 is a cylindrical tube having an outer diameter of 60.5 mm and a wall thickness of 1.6 mm, and the height of the support column 2 is 670 to 970 mm. In addition, as the outer diameter of the support column 2, 76.3 and 101.6 mm may be used. In addition, stainless steel is used as the component material for the table fixture.

The fixing bracket is configured as described above, and the operation will be described next.

As shown in FIG. 4A, on the first base 61, spiral surfaces S1 and S1 that are gently inclined are formed on both sides of the opening hole 64, respectively. That is, in the upper semicircular region, the lower end of the opening hole 64 is lowered while being gently twisted and inclined in the direction Y1 from the left end of the spiral surface of the opening hole 64 at a high position. The spiral surface is gently twisted in the direction Y2 from the right end of the high position of the spiral surface and descends while tilting. Here, the range of the inclination angle of the spiral surface S1 was preferably 1 to 8 degrees. In the range of this inclination angle, it turned out that the locking rod 671 is easy to bite into the spiral surface S1, and the locking rod 671 is difficult to come off from the spiral surface S1. That is, it is easy to attach the column 2 to the fixed portion 610 and the column 2 is difficult to come off the fixed portion 610. In summary, within this tilt angle range, the column 2 can be securely fixed to the top plate 1 or the bottom plate 4 and the column 2 can be fixed to the table 100. Problems have arisen when separating the column 2 from the plate 1. Then, it tried to make the latching bar 671 of the support | pillar 2 easy to leave | separate from the 1st board | substrate 61 by pinching the winding spring 68 between the 2nd base | substrate 62 by the side of the top plate 1, and the latching bar 671. . Referring to FIG. 2, when the column 2 is used as a table, the horizontal locking rod 671 is pressed downward through the washer 69 by the repulsive force of the winding spring 68. Therefore, the lower surface of the locking rod 671 is fixed in a state locked to the spiral surface S1. That is, the locking rod 671 is in a state where the locking rod 671 has bitten into the spiral surface S1 of the first base 61 of the fixing portion 610. When removing the support 2, the top plate 1 is first turned upside down, and then a screwdriver or a thin stick is inserted into the small hole 21 (see FIG. 1) penetrating in the radial direction of the support 2, and 30 to 45 degrees on the left side. Rotate. In the middle of this rotation, when the locking rod 671 reaches the position of the elongated hole 642 in the radial direction of the opening hole 64 in the first base 61, the locking rod 671 is being pushed out by the winding spring 68. The stop rod 671 comes to mesh with the inner peripheral surface 643 of the elongated hole 642 (see FIG. 4). If the locking rod 671 is engaged with the inner peripheral surface 643 and further rotated while the rod is inserted into the small hole 21 of the support column 2, the locking rod 671 remains engaged with the inner peripheral surface 643. While loosening in principle, the locking rod 671 is finally pushed out of the elongated hole 642 by the restoring force of the winding spring 68 and the support column 2 is detached from the fixing portion 610. That is, the locked state in which the locking rod 671 bites into the first base 61 and the spiral surface S <b> 1 is released, and the column 2 is detached from the fixing portion 610. In this way, the column 2 could be removed from the top plate 1 of the table 100.

Next, a method for attaching the removed support to the top plate again will be described with reference to FIG. In order to fix the table 100 upside down and fix the column 2 to the top plate 1, the fitting hole 66 on the inner periphery of the upper end of the column 2 is inserted toward the first base 61 of the fixing portion 610 fixed to the top plate 1. Fit. At the same time, the locking rod 671 of the lock rod 67 is inserted in alignment with the elongated hole 642 of the opening hole 64, and the locking rod 671 is brought into contact with the inner washer 69. Next, when the support column 2 on the rotating unit 620 side is rotated around the axis, the lower bar is rubbed against the spiral surface S <b> 1 while being pushed back by the winding spring 68. Just by turning the support column 2 slightly, the support unit 610 of the upper top plate 1 is firmly engaged with the rotating unit 620 on the support column 2 side, and the support column 2 is fixed to the top plate 1 by almost one-touch operation. . Thus, the support 2 can be fixed to the top plate 1 by the principle of fastening the male screw to the female screw. Specifically, it can be instantly tightened or loosened as required by simply applying a rotation about a 1/4 rotation or less of the screw to the column 2. In this case, the locking rod 671 of the lock rod 67 acts as a male screw, and the inclined surface S acts as a female screw, so that the locking rod 671 is fastened to the inclined surface S by the principle of screw tightening. Since the lock rod 67 and the inclined surface S are made of metal, the male screw and the female screw are firmly engaged without being damaged and the column does not wobble. In addition, since the winding spring 68 is sandwiched in this state, the winding spring 68 becomes a buffer for contact between metals, and galling does not occur.

To summarize the fixing bracket according to the present invention, when a table that has been used after the sale period has passed and the top plate and the support are disassembled and stored compactly, if the table is turned in the opposite direction to the support, Can be easily and quickly removed from the top or bottom plate. Further, in order to perform the turning operation of the support column with a light force, a small hole is provided near the lower end of the support column, and a screwdriver, a rod, or the like that becomes a rod inserted into the small hole is rotated. As described above, according to the table having the fixing bracket according to the present invention, the special sales floor is opened, and after that, when the period has passed, the column is instantaneously removed from the top plate and disassembled, and immediately ready for the next venue. You can prepare to move on.

Other embodiments of the first base 61 are conceivable and will be described below with reference to FIG. As shown in the figure, spiral surfaces S <b> 2 and S <b> 2 are formed above and below the opening hole 64 at the center of the bottom surface 62. That is, the spiral surfaces S2 and S2 descend at the upper semicircular portion while being gently twisted and inclined from the high left end of the upper spiral surface of the opening hole 64 in the direction W1, while the lower semicircular surface. In the region of (2), it descends while being gently twisted and inclined from the high right end portion of the spiral surface of the opening hole 64 in the direction of the direction W2. As described above, the bottom surface 62 includes the spiral surfaces S <b> 2 and S <b> 2 on both sides of the opening hole 64. Here, the upper half spiral surface S2 is inclined at a certain angle in the direction W1 from the left end portion, but a built-up portion M is provided in the range from the center line CL to the hatched portion fan-shaped angle J, and thereafter It also tilts at a certain angle. Similarly, the lower half spiral surface S2 is inclined at a constant angle from the right end in the direction W2, but the overlay M is provided in the range from the center line CL to the oblique fan-shaped angle G, and thereafter the constant is also constant. Tilt at an angle of. Here, the hatched fan-shaped angles J and G of the overlay M are 30 to 60 degrees, respectively. Moreover, the build-up part M is fan-shaped as shown in the figure, the width on the outer peripheral side is 7 mm to 10 mm, the inner peripheral side is 3 mm to 5 mm, and the maximum height that is gently piled up is 0.1 mm. About 0.5 mm. In this way, it was confirmed that the locked state would be very good by embedding a part of the spiral surface. That is, when the locking rod 671 of the lock rod 67 crosses the peak of the built-up portion M when the support 2 is rotated and the fixing bracket is tightened, the lock is applied between the built-up portion M and the lock rod 671. , Tightening becomes more firm. Once tightening stops at the position of the overlay M, the tightening force increases when crossing this mountain. Thus, by providing the built-up portions M on the upper and lower spiral surfaces S2, the support column can be instantly locked and fixed to the top plate, and the locked state is released by an unexpected impact or the like. The table does not collapse suddenly when the column comes off the top plate.

A second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a perspective view of the table. FIG. 7 is a component diagram of the top plate and the bottom plate.

The main difference between the present embodiment and the first embodiment is that the fixing brackets are used both on the upper and lower sides of the support column. The lower end of one column is fixed to the bottom plate using a fixing bracket, while the upper end of the column is fixed to the top plate using a fixing bracket. And a support | pillar can be easily removed from both a bottom plate and a top plate.

In the table 200 shown in FIG. 6 (a), by using the same fixing bracket as in the first embodiment, the top end of the support column 2 is fixed to the top plate 1 while the lower portion of the support plate 2 is fixed to the bottom plate 4. Secure the lower end. And after use, it can be instantly disassembled and separated into three bodies: a top plate, a bottom plate and a column, which is convenient for transportation or storage. Here, a thin cylindrical tube having a diameter of the support column 2 of 76.3 mm, 100.6 mm, 139 mm, 210 mm or 280 mm is used. In FIG. 6B, the table 200 is turned upside down so that the mounting state of the fixture can be understood. The second base 62 of the circular fixing bracket 6 is screwed from the back side to the center of the upper base plate 3 in the figure, and the column 2 is fixed to the first base 61 of the fixing bracket 6 from the front side (not shown). On the back side of the bottom plate 3, five flat bars 31 are attached radially from the center to reinforce the rigidity strength of the bottom plate 3. An adjuster 9 is provided near the outer periphery of the bottom plate 3 at the tip of the flat bar 31 to finely adjust the level of the bottom plate. When five adjusters 9 are provided, it is possible to keep the bottom plate most horizontal, and in particular, there is an effect of preventing the table from falling when the outer diameter of the top plate is large. Further, when the fixing bracket 6 is screwed into the center portion of the bottom plate 3 from the back side, an adhesive is poured to lock the small screw to prevent the screw from loosening, and the screw is not used unless a special tool is used. It is recommended to use a screw head with a specially shaped groove so that it cannot be loosened. In addition, when the intensity | strength of the baseplate 3 is high, a radial flat bar is not provided. Then, a plurality of adjuster nuts are directly welded to the vicinity of the outer periphery of the bottom plate 3 at the tip, and bolts are screwed to the adjuster nuts to finely adjust the level of the bottom plate 3. On the other hand, a first base of a rectangular fixture 6 is screwed to the center of the top plate 1 on the lower side of the figure, and the column 2 is fixed thereto. Also on the back side of the top plate 1, four flat bars 11 are attached radially from the center to reinforce the rigidity strength of the bottom plate 3. These flat bars 11 are provided by engraving the lower surface of the top plate, eliminating the appearance of bulges.

Next, the fixing bracket in a state in which the columns are removed from the top plate and the bottom plate side will be described with reference to FIG. FIG. 7A shows a state where the support column 2 is removed from the top plate 1, and FIG. 7B shows a state where the support column 2 is removed from the bottom plate 3. In FIG. 2A, the first base 61 of the fixing portion of the fixing metal 6 is shown at the center of the back surface of the top plate 1, and the opening hole 64 is visible at the center. In FIG. 5B, the first base 61 of the fixing part of the fixing metal 6 is shown in the center part of the bottom plate 3, and the opening hole 64 is visible in this center part.

In the first embodiment, it has been described that the support is fixed to the top plate using the fixing bracket, but this embodiment is another embodiment and will be described with reference to FIG.

The main difference between the present embodiment and the first embodiment is that the support post is fixed to the bottom plate using a fixing bracket, and the support post can be easily detached from the bottom plate. Hereinafter, the differences from the first embodiment will be mainly described.

FIG. 8 shows an example of a display shelf, and the column is fixed to the bottom plate using the same fixing bracket as in the first embodiment. In the display shelf 300, the left and right support columns 2 are detachably connected to the left and right bottom plates 3 by using the fixing bracket 6 on the bottom plate 3 below. On the surface of the bottom plate 3, a first base 61 of the fixing bracket 6 is shown. Incidentally, the shelves 5 can be provided in multiple stages using a large number of slits 22 drilled in the axial direction of the support column 2.

Here, an example of product specifications of the display shelf 300 is shown. The support column 2 has an outer diameter of 50.8 mm, a wall thickness of 1.9 mm, and a height of 1,350 to 1,600 mm, or 1800 to 2,100 mm. The bottom plate 3 is a steel plate having a thickness of 4.5 mm and has a size of 400 to 500 mm. The bottom plate 3 is shot blasted to have a satin pattern or a hairline pattern so that the surface does not become a mirror surface. In addition, a square pipe with a side of 50 mm may be used as the support column 2 of the display shelf 200. The column 2 is a cylindrical tube made of steel, stainless steel, or aluminum. In the case of steel, the column 2 is mirror-finished by chrome plating, or chrome-plated after shot blasting. In addition, a rust prevention effect may be aimed at by applying black powder coating or silver color. In addition, stainless steel is used as a material for the fixtures for the table and the display shelf.

The usage of the fixing bracket of the present invention is not limited to furniture such as tables, display shelves, and the like, but may be applied to applications in which a column is detachably fixed to a top plate. For example, it is of course possible to use a fixing bracket for a work table, a desk or the like used for working on the top board.

100, 200 Table 300 Display shelf 1 Top plate 2 Post 21 Small hole, 22 Slit 3 Bottom plate 5 Shelf 6 Fixing bracket 610 Fixing portion 620 Rotating portion 61 First base 611 Bottom 612 Inclined surface 613 Inclined surface 62 Second base, 621 Bottom 63 fitting protrusion 64 opening hole, 641 round hole, 642 long hole, 643 inner peripheral surface 65 transfer plate 66 fitting portion 67 locking rod, 671 locking rod, 672 vertical rod 671a, 671b, 671c, 671a ′, 671b ′ , 671c ′ Flat surface 68 Winding spring 69 Washer 71 First base 74 Opening hole 9 Adjuster K, L Angle M Overlaying portion S1, S2 Spiral surface X Viewed in directions Y1, Y2, W1, W2

Claims (2)

In the strut structure in which the rotating part is fitted to the fixed part,
The fixing portion includes a concave first base and a concave second base,
Each of these dents face each other to form a cavity between them,
The fixing part is fixed to the top plate or / and the bottom plate,
The first base is provided with a fitting projection,
While an opening hole is drilled in the bottom surface of this fitting projection,
On both sides of the opening hole, a gently inclined spiral surface is formed,
On the other hand, the rotating part is formed at the tip of a column made of a cylindrical tube,
Bridging the transfer plate in the diameter direction of the tip,
A T-shaped lock rod is erected almost at the center of this transfer plate,
While fitting the fitting protrusion of the first base on the fixed part side to the tip part on the rotating part side,
The locking bar of the T-shaped lock bar is inserted through the opening hole in the bottom surface,
And by rotating the column around the axis,
While the locking bar is tightened to the spiral surface,
A strut structure in which the rotating part is locked to the fixed part,
In the cavity,
A strut structure in which a winding spring, a washer, and a T-shaped lock rod are stacked in order from the second base side. The strut structure according to claim 1, wherein a built-up portion is provided on the spiral surface.

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