JP2009254713A - Shelf device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shelf device that anyone can assemble simply in a shelf configuration according to individual preferences. <P>SOLUTION: Two or more pillar members 12 which are connected up and down and a shelf board 14 which is clamped by joining sections 18 of the pillar members 12 and is arranged are provided. While an axial rod 24 is provided in an extended condition upward from the pillar members 12 under the joining sections, a shaft hole 26 which makes this axial rod 24 insert is prepared on the pillar members 12 above the joining sections and a through-hole 36 which is perforated so that it passes through the axial rod is prepared on the shelf board 14. It consists of a shelf device 10 which is characterized by containing a positioning device 16 which fixes the shelf board 14 on an arbitrary axial rod round position with the through-hole 36 of the shelf board 14 perforated through the axial rod 24. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shelf apparatus that can be used for various purposes, such as vases, figurines such as dolls, display of merchandise, animal play equipment such as cats, etc.

  For interior decorations and display of merchandise in the store, for example, vases, flower pots, dolls, photographs, ceramics such as teacups and bowls, and other hobby items such as ornaments and products are displayed on shelves and stands. Recently, shelves and tables that display figurines, etc. due to diversification of hobbies can be freely designed with high design and shelves including height and orientation of shelves according to user preference. There are demands for a variety of designs, such as those that can be designed and changed.

  As a technique for freely arranging a plurality of shelf boards to some extent, for example, Patent Document 1 proposes a game device for cats. The play device for cats of Patent Document 1 is a play equipment in which a cat climbs up and down a shelf board, and fixes a plurality of pole members horizontally by sandwiching a shelf board between pole members connected in a vertical direction. The shelf board is connected to the support column so as to be rotatable. Each pole member is formed of a hollow cylinder, and a connecting member having a nut at the center is arranged on the inner side of both ends, and the cap is covered with a cap. The connecting member is a double pipe consisting of an inner pipe part and an outer pipe part. A nut is arranged at the center of the inner pipe part, and the cap connecting part is erected in three directions from the inner pipe part toward the outer pipe part. Is provided. The screw hole provided in the cap and the screw hole of the cap connecting portion are aligned and fixed with three screws in a state where the cap is covered. A bolt is attached to the pole member via the nut of the connecting member, and a shelf plate is attached to the bolt, and then the upper pole member is attached to the protruding portion of the bolt via the nut of the connecting member, and the shelf is mounted on the upper and lower pole members. It was fixed with a plate in between.

JP 2004-315465 A

  However, in the configuration described in Patent Document 1, the shelf can be rotated around the pole, and the shelf can freely rotate around the bolt before the shelf is sandwiched and fixed by the pole member. To do. Therefore, once the shelf is set in the user's preferred orientation, the shelf is easily displaced immediately. It was necessary to hold it, and the assembly work was complicated and could not be performed smoothly. At the same time, since the shelf board is easily displaced, it is difficult to finely adjust the position of the shelf board and it is difficult to arrange it accurately. Furthermore, even after the shelf plate is sandwiched and fixed by the pole member, the pole member and the shelf plate are held only by the frictional force between the cap sandwiched above and below the shelf plate. There was a high risk of misorientation. Further, the configuration of the connecting portion of the pole member includes a connecting member, a cap, and a plurality of screws for fixing them, so that the number of parts is complicated, the manufacturing process is complicated, and the assembly process is somewhat complicated. I needed the technology. That is, it was not easy for anyone to assemble and install, and it was difficult to use easily.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a shelf device that anyone can easily assemble with a shelf configuration according to his / her preference.

  In order to solve the above-described problem, the present invention has a plurality of column members 12 that are connected vertically and a shelf plate 14 that is disposed between the connection portions 18 of the column members 12, below the connection portions. A shaft rod 24 protrudes upward from the column member 12 on the side, and a shaft hole 26 for inserting the shaft rod 24 into the column member 12 on the upper side of the connecting portion is provided. The positioning device 16 has a positioning device 16 that has a through hole 36 to be penetrated, and fixes the shelf plate 14 at an arbitrary position around the shaft rod with the shaft rod 24 penetrated through the through hole 36 of the shelf plate 14. It is comprised from the shelf apparatus 10 to do. The column member 12 and the shelf board 14 can be assembled in an arbitrary shelf board configuration while freely combining them. The shelf plate 14 may be disposed between all the upper and lower connecting portions of the column member 12, or the shelf plate 14 may be disposed at a part of the connecting portions. By changing the length of each column member 12 and the number of column members connected vertically, the overall length in the vertical direction can be freely changed. The plurality of column members 12 may all have the same length, but may have different lengths. The installation height of the shelf board 14 can be changed according to the length of each column member 12 and the number of upper and lower connections of the column members. The shelf board 14 may be any other shape such as a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, or the like. Moreover, all the shelf boards 14 may be the same size and may differ in a magnitude | size and a shape. Moreover, it is also possible to sell a set of pillar members and shelves like a kit, which can be easily assembled by individuals. The shelf apparatus 10 can be used indoors or outdoors, for example.

  Further, the positioning device 16 is a receiving surface 12a in which the column member below the connecting portion receives the shelf plate 14 and protrudes upward from the receiving surface 12a, and the column member 12 below the connecting portion of the shelf plate 14 is provided. It is good also as including the 1 or several piercing member 40 which pierces the shelf board 14 by driving in, and positions and fixes this shelf board.

  The shaft rod 24 is composed of a screw shaft 28 having a lower portion embedded in a column member and an upper portion protruding upward, and an embedded nut 30 that is screwed to the screw shaft 28 is installed on the upper column member 12. It is good. The embedded nut 30 may be a long nut structure in which a female thread portion is formed in the entire shaft hole 26 corresponding to the depth of the shaft hole 26, or may be a short nut in which a female thread portion is formed in a part of the shaft hole 26.

  The embedded nut 30 is provided with a projecting portion 32 projecting radially from the outer periphery, and hitting the projecting portion 32 when the embedded nut 30 is driven into the hole 26 formed in the upper column member in advance. The embedded nut 30 may be embedded. The protruding portion 32 is provided integrally with the embedded nut 30, and these are integrally driven into the column member 12 and embedded. The protruding portion 32 protrudes from a part around the outer periphery of the embedded nut 30.

  Further, the projecting portion 32 may include an impact receiving portion 34 that protrudes in the reverse direction of implantation from the implantation base end 30a of the embedded nut.

  According to the shelf device of the present invention, the shelf apparatus includes a plurality of column members connected vertically and a shelf plate arranged to be sandwiched between the connection portions of the column members. And a shaft hole for inserting the shaft rod is provided in the column member on the upper side of the connecting portion, and a through hole for penetrating the shaft rod is drilled in the shelf plate. Since there is a positioning device that fixes the shelf plate at an arbitrary shaft rod position with the shaft rod penetrated through the through-hole of the shaft, when assembling the shelf device while freely combining a plurality of column members and shelf plates Since the shelf set at the desired position around the axis can be fixedly positioned via the positioning device, the shelf will not be displaced in the work after positioning, and the work can be performed smoothly, and anyone can easily Can be assembled. At the same time, it is possible to reliably construct a shelf board configuration according to the user's preferred position. In addition, even after the shelf device is assembled, the positioning device has a relatively high connection strength between the shelf plate and the column member, and there is little wobbling of the shelf plate, so that a stable structure can be expected when placing an object on the shelf plate.

  Further, the positioning device is a receiving surface on which the column member below the connecting portion receives the shelf plate, and protrudes upward from the receiving surface, and the shelf plate is driven by driving into the column member below the connecting portion of the shelf plate. By including one or a plurality of piercing members for positioning and fixing the shelf board by piercing the shelf board, it is easy to drive the shelf board with a wooden mallet or the like after freely determining the pivoting position of the shelf board The shelf plate can be positioned and fixed only by simple operations, the assembly work of the shelf device can be performed smoothly, and the positioning device can be specifically realized with an extremely simple structure.

  In addition, the shaft rod is composed of a screw shaft in which the lower portion is embedded in the column member and the upper portion protrudes upward, and an embedded nut that is screwed to the screw shaft is installed in the upper column member. It is a simple structure in which the screw shaft and embedded nut are embedded in the pillar member, and the upper and lower connection structure between the pillar members can be realized with a simple structure with a small number of parts.

  Also, the embedded nut is provided with a projecting portion projecting radially from the outer periphery, and when the embedded nut is driven into a hole formed in advance in the upper column member, the embedded nut is embedded while striking the projecting portion. By adopting a configuration, the embedded nut can be embedded in the column member by hitting the projecting portion without directly hitting the driven proximal end of the embedded nut, and as a result, deformation and damage of the embedded nut can be improved. The embedding nut can be embedded smoothly and in a short time while preventing. Further, in the state where the embedded nut is embedded in the column member, the protruding portion protruding in the radial direction can prevent the embedded nut from rotating with respect to the column member and can be reliably connected.

  In addition, the projecting portion includes a striking receiving portion that protrudes in the reverse direction of embedding from the proximal end of the embedded nut, so that a hammer or the like hardly hits the embedded proximal end of the embedded nut even in a rough driving operation to some extent. Further, it is possible to more reliably prevent the embedded nut from being damaged or deformed, and to perform the operation of embedding the embedded nut in the column member smoothly and in a short time.

  Hereinafter, an embodiment of a shelf device of the present invention will be described with reference to the accompanying drawings. The shelf device according to the present embodiment is a shelf device that can be used for other purposes such as display and storage of figurines and products, and play equipment for small animals such as cats and birds. 1 to 5 show an embodiment of the shelf device of the present invention. As shown in FIG. 1 and FIG. 2, in the present embodiment, the shelf device 10 includes a plurality of column members 12 that are connected up and down, and a shelf plate 14 that is disposed between the connecting portions of the column members 12. And a positioning device 16 for the shelf board 14.

  As shown in FIG. 1 and FIG. 3, the column member 12 is connected vertically by a connecting portion 18 to construct a column body 20 standing vertically, and supports one or a plurality of shelf plates 14. In the present embodiment, the column body 20 is formed from a total of four column members 121 to 124 including three column members 121 to 123 having the same length and one column member 124 having a short length. Each column member 12 is made of, for example, a wooden prism member. The column member 12 is a flat surface in which both upper and lower end surfaces abut against the shelf plate surface when the shelf plate 14 is sandwiched, and a receiving surface 12a for receiving the shelf plate 14 from below is formed at the upper end. In addition, a pressing surface 12b is formed at the lower end to press the shelf 14 from above when connected. In addition, the column member 12 may be other arbitrary, for example, a cylindrical member, a triangular or pentagonal or more polygonal column member. As shown in FIGS. 1 and 4, in the present embodiment, a support base portion 22 that supports the column member 12 that is vertically connected, that is, the column body 20, is provided below the lowermost column member 121. Are connected. The support base 22 is formed by, for example, stacking two rectangular long plate members 221 and 222 in one direction in a cross shape in a plan view, and using a nut or the like in a state where the bolt 23 is passed through from the bottom to the cross-over portion. It is fixed. The column member 121 and the support base portion 22 are assembled to the bolt 23 by being connected to an embedded nut 30 of the column member 121 described later. An adjustment member 223 having a height corresponding to the thickness of the lower long plate material 222 is fixed and stabilized on both ends of the upper long plate material 221 among the long plate materials stacked in a cross shape on the support base 22. In addition, the support base 22 has, for example, a single rectangular plate member, a circular plate member, a cross plate member, a frame-like structure in which a plurality of rod-shaped bone members are assembled, a tripod structure, or any other arbitrary configuration. But you can. Further, in the present embodiment, the column body 20 is configured to be self-supported by the support base portion 22, but for example, the column member 12 connected vertically may be fixed by abutting against the ceiling and the floor surface.

  As shown in FIGS. 1 and 2, the connecting means for connecting the column members 12 up and down includes a shaft rod 24 projecting upward from the lower column member 12 and the upper column member 12. And a shaft hole 26 provided for inserting the shaft rod 20. In this embodiment, the shaft rod 24 includes a screw shaft 28 having a male screw portion formed on the outer periphery, and a female screw portion is formed on the inner peripheral wall of the shaft hole 26. The screw shaft 28 of the column member 12 on the lower side of the connecting portion and the female screw portion of the shaft hole 26 of the upper column member 12 are screwed to be firmly connected. The female thread portion of the shaft hole 26 is configured by installing an embedded nut 30 in the column member 12. As shown also in FIG. 4, each of the column members 121 to 123 projects the screw shaft 28 upward from the center of the upper receiving surface 12 a, toward the inside of the column member from the center of the holding surface 12 b, that is, the lower end surface. An embedded nut 30 is embedded and installed in the drilled hole. Note that the column member 124 connected to the uppermost side is different from the other column members 121 to 123 in that the embedded nut 30 is installed on the lower side, but the screw shaft 28 is not projected. .

  For example, the screw shaft 28 is integrated with the column member 12 by embedding the lower side in the column member 12 (121 to 123) and projecting the upper side including the male screw portion 28a upward. The projecting length of the screw shaft 28 is, for example, sufficiently longer than the thickness of the shelf plate 14, and is set so that the tip protrudes through the shelf plate and is connected to the upper column member. On the projecting base side of the screw shaft 28, a non-threaded portion 28b in which a male threaded portion is not formed is formed. The non-threaded portion 28b is provided, for example, approximately the same as the thickness of the shelf board 14. The non-threaded portion 28b can reduce the resistance between the screw shaft and the shelf board 14 as will be described later, and can smoothly move the shelf board 14 along the axial direction of the screw shaft 28. Further, there is little backlash between the shelf board 14 and the screw shaft 28, and the strength can be maintained. The screw shaft 28 is embedded in the column member 12 by, for example, providing a pilot hole in the column member 12 with a drill or the like, and screwing while rotating the non-threaded portion 28b around the axis while holding it with a pliers or a clamp device. The pliers or the like holding the screw shaft 28 are driven by a hammer or the like, or the screw shaft is mechanically grasped and press-fitted to be embedded. For example, if a screw thread is also provided on the lower side embedded in the column member of the screw shaft 28, the connection strength between the screw shaft 28 and the column member 12 can be increased.

  The embedded nut 30 is a long nut having an internal thread formed on the inner peripheral wall, and is embedded in the lower portion of the column member 12 (121 to 124). In the present embodiment, when the embedded nut 30 is embedded, for example, the embedded nut 30 is driven by making a pilot hole in the center of the pressing surface 12b with the column member 12 turned upside down. As shown in FIGS. 6 and 7, the embedded nut 30 is provided with a projecting portion 32 projecting radially from the outer periphery. The projecting portion 32 is a hit receiving means that receives a hit when the embedded nut 30 is driven into a prepared hole that has been previously drilled in the column member 12. It can be embedded in the member 12. In the present embodiment, the projecting portion 32 is made of, for example, a metal plate member integrally fixed to the embedded nut 30 by welding or the like, and is provided substantially parallel to the axial direction of the embedded nut 30 with the plate surface vertical. ing. Further, the projecting portion 32 has an impact receiving portion 34 that protrudes in the reverse direction of implantation from the implantation base end 30a of the embedding nut. That is, the driving proximal end of the projecting portion 32 forms the impact receiving portion 34, and is stepped up from the driving proximal end 30a of the embedded nut. Is set. Basically, if the protruding portion 32 has the same height as the driving base end 30a of the embedded nut 30, the protruding portion can be hit and the embedded nut can be completely embedded in the column member. However, by providing the striking receiving portion 34 as in the present embodiment, the driven proximal end 30a of the embedded nut is disposed at the step-down position with respect to the striking receiving portion 34, so that the projecting portion is somewhat rough. Even with a simple driving operation, it is difficult for a hammer or the like to hit the base end 30a of the embedded nut, and damage and deformation of the base end 30a of the embedded nut can be prevented more reliably. Thus, the embedded nut 30 can be driven smoothly while the embedded nut 30 is reliably protected from being hit by a hammer or the like. The driving tip portion 32a of the projecting portion 32 is set at an intermediate position in the longitudinal direction of the embedded nut, and is formed by sharpening the tip side in a wedge shape. At the time of driving into the column member 12, the protruding portion 32 is easily driven into the column member together with the embedded nut. Further, since the protruding portion 32 protrudes in the radial direction of the embedded nut, it is possible to prevent the embedded nut from rotating with respect to the column member, and a good connection with the screw shaft of the lower column member. Can be realized. A plurality of protruding portions 32 may be provided on the outer periphery of the embedded nut 30. Further, the embedded nut is not limited to a long nut that forms a female thread portion in the entire shaft hole 26 but may be a relatively short nut that forms a female thread portion in a part of the shaft hole.

  As shown in FIGS. 1, 2, and 3, the shelf plate 14 is disposed between the upper and lower column members 12 at the connecting portion 18 of the column member 12. In this embodiment, the three shelf boards 141-143 are arrange | positioned mutually spaced apart up and down. The shelf board 14 consists of a wooden rectangular board member, for example, and is installed with the board surface horizontal. As shown in FIG. 4, a through hole 36 through which the screw shaft 28 passes is formed in the shelf plate 14. The through hole 36 is set to have a diameter substantially the same as the outer diameter of the screw shaft, and the shelf plate 14 can be moved up and down along the longitudinal direction of the screw shaft 28 and can be rotated about the axis. Thus, the shelf plate 14 can be set to an arbitrary direction around the axis of the screw shaft 28, that is, an arbitrary position around the axis. The shelf board 14 is fixedly positioned by the positioning device 16 in a state where the shelf board 14 is received by the receiving surface 12a of the column member 12 below the connecting portion. The uppermost shelf 143 is provided with, for example, a relatively large-diameter fitting hole 38, and a tapered vase P, a flower pot or the like having a gradually increasing diameter is fitted on the upper side for stable. Can also be arranged.

  As shown in FIGS. 1 and 5, the positioning device 16 is positioning means for fixing the shelf board 14 at a position around an arbitrary axis in a state where the screw shaft 28 is passed through the through hole 36 of the shelf board 14. The positioning device 16 serves as a stopper function that regulates and positions the shelf plate 14 around the axis in a state where the shelf plate 14 having a direction around the screw shaft is received by the receiving surface 12a of the column member 12 on the lower side of the connecting portion. Works. Moreover, it can be said that the connecting part 18 is a positioning connecting means for integrally fixing the lower column member 12 and the shelf board 14 together. As a result, for example, the shelf plate 14 is fixedly positioned to the lower column member 12 even before the shelf plate 14 is sandwiched by the upper column member. The determined direction of the shelf board 14 is not easily displaced, and the work can be performed smoothly, and at the same time, the shelf board 14 can be accurately assembled in a desired position configuration. In this embodiment, as shown in FIGS. 2 and 4, the positioning device 16 includes two piercing portions 40 that protrude upward from the receiving surface 12 a on the upper end side of the column member 12. The two piercing portions 40 are, for example, positions that are separated from the screw shaft 28 to some extent, and are provided at positions near the corners on the diagonal line of the column member 12. The piercing portion 40 is sharply provided in a nail-tip shape upward from the receiving surface 12a at the upper end of the column member 12, and the shelf plate 14 in a state where the screw shaft 28 is passed through the through hole 36 becomes the lower portion of the connecting portion. By driving in the column member 12 side (the T direction in FIG. 5), the shelf plate 14 is stabbed and positioned and fixed. Since the shelf board 14 is made of wood, the shelf board 14 can be positioned at any position of 360 ° around the screw axis, and the design freedom of the shelf board 14 is high, and the desired orientation can be adjusted while making fine adjustments. Can be set to In the present embodiment, the piercing portion 40 is provided by, for example, sharpening one end side of a metal strip having a certain length in a nail tip shape and embedding it in the column member 12 with one end of the nail tip shape facing upward. Yes. When embedding a metal strip having the piercing portion 40 formed at the tip, for example, a pilot hole is provided in the column member 12 with a drill or the like, and the pliers or the like are held with the tip side held by a pliers or a clamp device. It is placed by embedding it by driving it with a hammer or the like, screwing it into the pilot hole while rotating it around the axis while holding the fine rod, or mechanically grasping the screw shaft and press-fitting it. Since the screw shaft 28 is formed with the non-threaded portion 28b as described above, the inner peripheral surface of the through-hole 36 of the shelf plate becomes the thread of the screw shaft when the shelf plate 14 is driven to the column member side. It is hard to get caught and can be driven smoothly, so that work can be performed smoothly and reliably. In addition, the positioning apparatus 16 may provide the piercing part 40 in the shelf board 14 side contrary to the above, for example. Further, a piercing portion may be provided on the pressing surface 12b side of the lower end of the upper column member 12, and in this case, the shaft rod and the shaft hole are not a screw configuration, and may be a simple configuration of a rod member and a hole, for example. .

  When assembling the shelf device 10 according to the present embodiment, a plurality of column members 121 to 123 provided with the screw shaft 28, the embedded nut 30 and the piercing portion 40 in advance, and the uppermost column member provided with the embedded nut 30 124 and a shelf board 121 having a through hole 36 are prepared. For example, the support base 22 is placed on the floor, and the embedded nut 30 of the column member 121 is screwed to the bolt 23. As shown in FIG. 5, the shelf 141 is set in an arbitrary direction around the axis and fixed by the positioning device 16 in a state where the through hole 36 of the shelf 14 is passed through the screw shaft 28 of the column member 121. To do. At this time, with the shelf 141 set at a desired position, the shelf 141 is received by the lower pillar member by driving the shelf 141 into the lower pillar member 121 (T direction) with, for example, a mallet. It is stabbed into the piercing part 40 projecting from the surface 12a and positioned and fixed. In this case, since the screw shaft 28 is provided with the non-threaded portion 28b, the movement of the shelf 141 toward the column member 121 is smooth, and the workability is good. Thereby, the shelf board 14 can be positioned and fixed at a desired position around the axis, the subsequent work can be performed smoothly, and the shelf board configuration desired by the user can be accurately assembled. Then, the upper column member 122 is connected to the screw shaft 28 of the lower column member 121 protruding through the shelf plate 141 via the embedded nut 30. Similarly, the shelf as shown in FIGS. 1 and 3 is assembled by repeatedly assembling the shelf plate, positioning and fixing through the piercing portion, and connecting the upper column member, and connecting the uppermost column member 124. The device 10 is assembled. In this way, anyone can easily assemble the shelf apparatus 10 while freely setting the direction around the vertical axis of the shelf board. In addition, in this embodiment, the pillar 20 which connected the pillar member 12 up and down is one structure, However, For example, you may provide two or more multiple pillars. At this time, an arbitrary shelf 14 may be installed on the two columns. In addition, the component members of the shelf apparatus 10 such as the screw shafts, embedded nuts, the plurality of column members 12 provided with the piercing portions 40, and the shelf board 14 may be collectively sold as a kit. In addition, since the column member, the shelf board, and the like are wooden, the shelf device can be used not only indoors but also outdoors.

  The above-described shelf device of the present invention is not limited to the configuration of only the above-described embodiment, and may be arbitrarily modified without departing from the essence of the present invention described in the claims. .

  The shelf device of the present invention is, for example, a vase, a flower pot, a doll, a tableware such as a photo, a teacup, and other hobby items such as a vase, a flower pot, a tableware, a product display, storage, a cat, etc. It can be used for various purposes such as playground equipment.

It is explanatory drawing which expanded the side view and one part of the shelf apparatus which concern on one Embodiment of this invention. It is explanatory drawing which notched and represented the principal part in the partially expanded view of the isolation | separation state of the shelf apparatus of FIG. It is a perspective view of the shelf apparatus of FIG. It is a disassembled perspective view of the shelf apparatus of FIG. It is action explanatory drawing at the time of positioning and fixing a shelf board. It is a perspective view of an embedding nut. It is a side view of an embedding nut.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Shelf device 12 Pillar member 14 Shelf board 16 Positioning device 18 Connecting part 24 Shaft 26 Shaft hole 28 Screw shaft 30 Embedded nut 32 Projection part 34 Impact receiving part 36 Through-hole 40 Piercing part

Claims (5)

A plurality of column members connected vertically,
A shelf board that is sandwiched between the connecting portions of the pillar members, and
A shaft rod protrudes upward from the column member below the connecting portion,
A shaft hole for inserting the shaft rod into the column member on the upper side of the connecting portion is provided,
The shelf plate has a through hole that penetrates the shaft shaft,
A shelf device comprising a positioning device for fixing a shelf plate at an arbitrary position around a shaft rod with the shaft rod passed through a through hole of the shelf plate.   The positioning device is a receiving surface on which the column member on the lower side of the connecting portion receives the shelf plate, and protrudes upward from the receiving surface, and is stuck into the shelf plate by driving into the column member on the lower side of the connecting portion of the shelf plate. The shelf apparatus according to claim 1, further comprising one or more piercing members for positioning and fixing the shelf board. The shaft rod consists of a screw shaft with the lower part embedded in the column member and the upper part protruding upward,
The shelf apparatus according to claim 1 or 2, wherein an embedded nut that is screwed to the screw shaft is installed on the upper column member. The embedded nut is provided with a projecting portion projecting radially from the outer periphery,
The shelf apparatus according to claim 3, wherein the embedded nut is embedded while striking the protruding portion when the embedded nut is driven into a hole formed in advance in the upper column member. The shelf device according to claim 4, wherein the protruding portion includes an impact receiving portion that protrudes in the reverse direction of implantation from the proximal end of the embedded nut.

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