Auxiliary tool preventing locking part of shelf board from coming off from locking hole of support

Abstract

To provide an auxiliary tool for preventing a locking part of a shelf board from coming off from a locking hole of a support in an assembled shelf in which the locking part on a side of the shelf board is loosely fitted into the locking hole of the support.SOLUTION: An auxiliary tool 1 has: a fitting part 11 and a push-down part 12 that extend parallel to each other and spaced apart from each other so as to be inserted into an upper gap for removal generated in a locking hole of a support; and a clip part 13 connected to one end of each of the fitting part 11 and the push-down part 12. When being inserted into the upper gap of the locking hole of the support column, the fitting part 11 is fitted to an upper edge of the locking hole of the support. When being inserted into the upper gap of the locking hole of the support, the push-down part 12 pushes down an upper side part of the locking part of the shelf board. The clip part 13 is formed to apply repulsive force that maintains a parallel separation between the fitting part 11 and the push-down part 12, and to contract by finger pressure.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to the technology of assembled shelves.

Background Art

[0002] FIG. 1 is an explanatory view showing a state where the locking portion of the shelf board is loosely fitted into the locking hole of the support column.

[0003] Conventionally, assembled shelves are generally assembled from support columns (shelf columns) 2 and shelf boards (shelf receivers) 3 (see, for example, Non-Patent Document 1). The support column 2 is installed perpendicular to the ground, and the shelf board 3 is installed parallel to the ground between a plurality of support columns (for example, four). At this time, a plurality of locking holes for fitting the locking portion of the shelf board are provided in the support column.

[0004] According to FIG. 1, the shelf board 3 connects between a plurality of support columns 2 and functions as a storage shelf. The support column 2 is provided with locking holes 21 at equal intervals in the vertical direction, and has the same height with respect to the ground as the locking holes 21 of other support columns 2. Locking portions 31 are provided on both side portions of the shelf board 3. The locking portion 31 may be integrally provided on both side portions of the shelf board, or may be a portion to which a shelf receiver is connected. The shelf board is installed on the shelf receiver. A plurality of shelf boards 3 can be arranged in parallel and in multiple stages by adjusting according to the height position of the locking holes 21 of the support column 2.

[0005] According to FIG. 1(a), at the time of assembly, the locking portion 31 on the side portion of the shelf board 3 is loosely fitted into the locking hole 21 of the support column 2. The locking portion 31 of the shelf board 3 is in an inverted concave shape or a claw shape (∩ shape), and has a width that can be inserted into the locking hole 21 of the support column 2. In order to make the locking portion 31 in the ∩ shape, the shelf board 3 itself may be cut and raised to form it.

[0006] According to FIG. 1(b), the locking portion 31 of the shelf board 3 is locked to the lower edge portion of the locking hole 21 of the support column 2. Generally, the locking portion 31 of the shelf board 3 is strongly pressed against the lower edge portion of the locking hole 21 of the support column 2 by the weight of the load stored on the shelf board 3. Here, when the locking portion 31 of the shelf board 3 is loosely fitted into the locking hole 21 of the support column 2, an upper clearance (play) for removal is formed in the locking hole 21. That is, the vertical width of the locking hole 21 of the support column 2 is longer than the vertical width of the locking portion 31 of the shelf board 3 itself. Deliberately providing the upper clearance enables the shelf board 3 to be lifted upward when removing the locking portion 31 of the shelf board 3.

[0007] In addition, as another prior art, there is also an article display shelf in which the height of the fall prevention member can be easily changed (see, for example, Patent Document 1). According to this technique, for an article display shelf formed by supporting a plurality of upper and lower shelf boards, a pair of left and right front support columns having a plurality of locking holes arranged vertically are erected in the left and right front directions of the shelf board. Further, a plurality of locking claws provided at both left and right ends of a fall prevention member extending in the width direction of the shelf board are detachably engaged with the locking holes of the front support column. Thereby, the fall prevention member is erected above the front edge portion of the shelf board so that the height can be changed.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Non-Patent Documents

[0009]

Non-Patent Document 1

Non-Patent Document 2

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0010] However, in the case of the prefabricated shelf described above, when an earthquake occurs, the shelf board 3 itself sways up and down, and the locking portion 31 of the shelf board 3 may bounce back and lift into the upper gap of the locking hole 21 of the support column 2 due to the reaction. At this time, there is a problem that the locking portion 31 of the shelf board 3 comes off from the locking hole 21 of the support column 2, and the load on the shelf board 3 drops.

[0011] FIG. 1(c) shows a situation where the shelf board 3 itself is shaken up and down, and the locking portion 31 of the shelf board 3 comes off from the locking hole 21 of the support column 2. In this way, when the locking portion 31 of the shelf board 3 is bounced back to the upper edge portion of the locking hole 21 of the support column 2, the locking portion 31 of the shelf board 3 comes off from the locking hole 21 of the support column 2.

[0012] Particularly in Japan, it is common for a large amount of loads to drop from storage shelves due to earthquakes. Prefabricated shelves are widely used as daily necessities, not limited to libraries and convenience stores. Specifically, the number of open-shelf books in all university libraries in the Tohoku region is at least 6 million volumes or more, and there is also data showing that 21% of them dropped due to the Great East Japan Earthquake and the earthquake off the coast of Fukushima Prefecture (see, for example, Non-Patent Document 2). Also, in the case of Tokyo, it is said that the number of open-shelf books in all university libraries is over 50 million volumes. Considering future earthquakes, as a measure to prevent dropping for existing prefabricated shelves such as bookshelves, simple (and inexpensive) members are of course a social issue.

[0013] Therefore, an object of the present invention is to provide a simple auxiliary tool for preventing the locking portion of a shelf board from coming off from the locking hole of a support column with respect to an assembled shelf in which the locking portion on the side portion of the shelf board is loosely fitted into the locking hole of the support column.

Means for Solving the Problems

[0014] According to the present invention, there is provided an auxiliary tool for preventing the locking portion of a shelf board from coming off from the locking hole of a support column with respect to an assembled shelf in which the locking portion on the side portion of the shelf board is loosely fitted into the locking hole of the support column, a fitting portion and a pressing portion that extend parallel to each other and are spaced apart for insertion into an upper clearance for removal formed in the locking hole of the support column, clip portions respectively connected to one end of each of the fitting portion and the pressing portion, and having When the fitting portion is inserted into the upper clearance of the locking hole of the support column, it fits with the upper edge portion of the locking hole of the support column. When the pressing portion is inserted into the upper clearance of the locking hole of the support column, it presses down the upper side portion of the locking portion of the shelf board. The clip portion is formed to apply a repulsive force that maintains a parallel separation between the fitting portion and the pressing portion and to contract by finger pressure. It is characterized by this.

[0015] According to another embodiment of the auxiliary tool of the present invention, the clip portion is formed in a substantially circular shape, the fitting portion is formed to extend in an arbitrary tangential direction of a substantially circle, the pressing portion is formed to extend parallel to the tangential direction in which the fitting portion extends, or the clip portion is formed in a substantially angular shape with a plurality of corners, the fitting portion is formed to extend in an arbitrary side direction of a substantially angular shape, the pressing portion is formed to extend parallel to the side direction in which the fitting portion extends. This is also preferable.

[0016] According to another embodiment of the auxiliary tool of the present invention, The fitting part, the clip part, and the pressing part are integrally connected and formed of resin. This is also preferable.

[0017] According to another embodiment of the auxiliary tool of the present invention, The fitting part forms a protrusion toward the locking hole of the support column and a concave neck part connecting between the protrusion and the clip part. When inserted into the upper gap of the locking hole of the support column, the neck part is hooked under the upper edge of the locking hole of the support column, preventing the protrusion from coming out of the locking hole of the support column. This is also preferable.

[0018] According to another embodiment of the auxiliary tool of the present invention, The protrusion is formed on an inclined surface such that the height of the tip part is low and the height of the rear end part is high. When inserted into the upper gap of the locking hole of the support column, the protrusion slides under the upper edge of the locking hole of the support column. This is also preferable.

[0019] According to another embodiment of the auxiliary tool of the present invention, The fitting part has a first width that can be inserted into the locking hole of the support column. The clip part has a second width that is wider than the first width so as to press against the peripheral part other than the locking hole of the support column. This is also preferable.

[0020] According to another embodiment of the auxiliary tool of the present invention, The fitting part is formed in a plurality of stepped stages, and has a first-stage fitting part and a second-stage fitting part connected in series above the first-stage fitting part. The first-stage fitting part is connected in series to the second-stage fitting part, and the second-stage fitting part is connected in series to the clip part. It has a common pressing part that extends parallel to the first-stage fitting part and the second-stage fitting part. This is also preferable.

[0021] According to another embodiment of the auxiliary tool of the present invention, The fitting portion is formed in a plurality of directions when viewed from the clip portion, and has a first-stage fitting portion and a second-stage fitting portion connected in a direction different from that of the first-stage fitting portion via the clip portion. The first-stage fitting portion and the second-stage fitting portion are each connected to the clip portion. It is also preferable that each of the first-stage fitting portion and the second-stage fitting portion has a separate pressing portion extending parallel thereto. This is also preferable.

[0022] According to another embodiment of the auxiliary tool of the present invention, Depending on the different heights of the upper gaps of the locking holes of the support column, either the first-stage fitting portion or the second-stage fitting portion fits onto the upper edge portion of the locking hole of the support column. This is also preferable.

[0023] According to another embodiment of the auxiliary tool of the present invention, The first-stage fitting portion forms a first-stage protrusion portion facing the locking hole of the support column and a concave first-stage neck portion connected to the first-stage protrusion portion. The second-stage fitting portion forms a second-stage protrusion portion connected to the first-stage fitting portion and a concave second-stage neck portion connected to the second-stage protrusion portion. It is formed such that a second height between the second-stage neck portion and the pressing portion is higher than a first height between the first-stage neck portion and the pressing portion. Either the first-stage neck portion or the second-stage neck portion is hooked under the upper edge portion of the locking hole of the support column, preventing the first-stage protrusion portion or the second-stage protrusion portion from coming out of the locking hole of the support column. This is also preferable.

[0024] According to another embodiment of the auxiliary tool of the present invention, The first-stage protrusion portion and the second-stage protrusion portion are formed on an inclined surface such that the height of the tip portion is low and the height of the rear end portion is high. When inserted into the upper gap of the locking hole of the support column, the first-stage protrusion portion or the second-stage protrusion portion slides under the upper edge portion of the locking hole of the support column. This is also preferable.

[0025] According to another embodiment of the auxiliary tool of the present invention, When inserted into the upper gap of the locking hole of the support column, in order to prevent the fitting part from moving backward due to the bending of the clip part, In the extending direction inserted into the locking hole of the support column, the pressing part is formed longer than the fitting part, The pressing part forms a rear wall that stops the movement of the end of the clip part behind the vertical position of the clip part connected to the fitting part. This is also preferable.

[0026] According to another embodiment of the auxiliary tool of the present invention, When removed from the upper gap of the locking hole of the support column, in order to prevent the fitting part from moving forward due to the bending of the clip part, In the extending direction inserted into the locking hole of the support column, the pressing part is formed longer than the fitting part, The pressing part forms a front wall that stops the movement of the fitting part in front of the vertical position of the tip of the fitting part. This is also preferable.

Effect of the Invention

[0027] According to the auxiliary tool of the present invention, it is possible to easily prevent the locking portion of the shelf board from coming off from the locking hole of the support column for an assembled shelf in which the locking portion of the shelf board is loosely fitted into the locking hole of the support column.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Embodiments for Carrying Out the Invention

[0029] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

[0030] Figure 2 is a perspective view of the basic auxiliary tool in the present invention.

[0031] Externally, the auxiliary tool 1 of the present invention is configured such that a tape-shaped rectangular plate forms a ring shape. According to Figure 2, the auxiliary tool 1 has a fitting portion 11, a pressing portion 12, and a clip portion 13.

[0032] The fitting portion 11 and the pressing portion 12 extend parallel to each other and are spaced apart so as to be inserted into the upper clearance for removal formed in the locking hole 21 of the support column 2. In the extending direction toward the locking hole 21 of the support column 2, the pressing portion 12 is formed longer than the fitting portion 11. The horizontal widths of the fitting portion 11 and the pressing portion 12 are substantially the same and are formed slightly narrower (for example, 4.5 mm) than the horizontal width of the locking hole 21 of the support column 2 (for example, 5 mm). The clip portion 13 is handled so as to be hooked or pinched by the user's finger. The clip portion 13 is not inserted into the locking hole 21 of the support column 2, and only the fitting portion 11 and the pressing portion 12 are inserted into the locking hole 21 of the support column 2. The upper surface of the continuous portion of the clip portion 13 with the fitting portion 11 is in pressure contact with the upper surface of the periphery of the locking hole 21.

[0033] The auxiliary tool 1 is integrally formed by continuously connecting the fitting portion 11, the clip portion 13, and the pressing portion 12 in this order. That is, the fitting portion 11 is continuously provided at one end of the clip portion 13, and the pressing portion 12 is continuously provided at the other end of the clip portion 13. As the material of the auxiliary tool 1, resin is preferably used. For example, it may be polypropylene, which is inexpensive and excellent in moldability and weather resistance. Of course, it may also be an ABS (acrylonitrile, butadiene, styrene) resin that can be created by a 3D printer.

[0034] Figure 3 is an explanatory diagram showing the insertion of the auxiliary tool of the present invention into the locking hole.

[0035] According to Figure 1(c) described above, when the locking portion 31 of the shelf board 3 is loosely fitted into the locking hole 21 of the support column 2, an upper clearance (play space) for removal is generated in the locking hole 21 of the support column 2. On the other hand, according to FIG. 3, the auxiliary tool 1 of the present invention is inserted into the upper gap thereof to fill the play space. Thereby, even when an earthquake occurs, the shelf board 3 itself is not shaken up and down, and the locking portion 31 of the shelf board 3 does not come off from the locking hole 21 of the support column 2.

[0036] FIG. 4 is a six-side view of the auxiliary tool of the present invention.

[0037] <Fitting portion 11> The fitting portion 11 is composed of a "protrusion portion 111" facing the locking hole 21 of the support column 2 and a concave "neck portion 112" connecting between the protrusion portion 111 and the clip portion 13. In order to make it concave, the vertical width of the protrusion portion 111 in the vertical direction is formed higher than the vertical width of the neck portion 112. Thereby, when the fitting portion 11 is inserted into the upper gap of the locking hole 21 of the support column 2, the neck portion 112 is hooked under the upper edge portion of the locking hole 21 of the support column 2, and the protrusion portion 111 is prevented from coming out of the locking hole 21 of the support column 2.

[0038] Further, the protrusion portion 111 is preferably protruded in a taper shape. The height of the tip portion is low, the height of the rear end portion (the continuous portion with the neck portion 112) is high, and a tapered inclined surface is formed on the upper surface of the protrusion portion 111. This inclined surface slides under the upper edge portion of the locking hole 21 of the support column 2 when the protrusion portion 111 is inserted into the locking hole 21 of the support column 2.

[0039] <Pressing portion 12> The pressing portion 12 extends parallel to and spaced apart from the fitting portion 11. The upper plane of the pressing portion 12 faces the lower plane of the fitting portion 11 at a distance. Further, the lower plane of the pressing portion 12 is in pressure contact so as to press down the upper edge portion of the shelf board 3 when the auxiliary tool 1 is inserted into the locking hole 21 of the support column 2. In addition, a "rear wall 121" and a "front wall 122" are formed on the upper plane of the pressing portion 12. This will be described later with reference to FIGS. 6 and 9.

[0040] <Clip portion 13> The clip portion 13 is formed by shaping an elongated tape-shaped flat plate into a ring having a substantially circular shape (including an ellipse, i.e., a substantially circular shape) or a substantially angular shape with a plurality of corners (including a substantially angular shape such as a triangle, a quadrilateral, a pentagon, a hexagon, etc.). It is only necessary that the auxiliary tool 1 can be inserted or inserted and removed by passing the user's index finger through it. Of course, it is not essential for the index finger to pass through, and it is only necessary that the user can operate the clip portion 13. The clip portion 13 is continuously provided at one end of each of the fitting portion 11 and the pressing portion 12. That is, the fitting portion 11 and the clip portion 13 are continuously provided, and the clip portion 13 and the pressing portion 12 are continuously provided. The fitting portion 11 and the pressing portion 12 are not continuously provided.

[0041] When the clip portion 13 has a substantially circular shape (see FIGS. 2 and 4), the fitting portion 11 is formed to extend in an arbitrary tangential direction of the substantially circular shape. Further, the pressing portion 12 is formed to extend parallel to the tangential direction in which the fitting portion extends.

[0042] When the clip portion 13 has a substantially angular shape with a plurality of corners (not shown), the fitting portion 11 is formed to extend in an arbitrary side direction of the substantially angular shape. Further, the pressing portion 12 is formed to extend parallel to the side direction in which the fitting portion extends.

[0043] FIG. 5 is a first explanatory view showing the insertion into the locking hole in the auxiliary tool of the present invention.

[0044] According to FIG. 5, the user holds the auxiliary tool 1 by passing the index finger through the substantially circular or substantially angular shape of the clip portion 13 and pressing the upper edge portion of the clip portion 13 with the thumb. Regarding the auxiliary tool 1, it is preferable that the vertical height between the upper part of the neck portion 112 and the bottom side of the pressing portion 12 substantially coincides with or is slightly higher than the vertical height of the upper gap of the locking hole 21 of the support column 2. Also, the vertical height between the tapered "lowest point" of the protrusion 111 and the bottom side of the pressing portion 12 is lower than the vertical height of the upper gap of the locking hole 21 of the support column 2. Furthermore, the vertical height between the tapered "highest point" of the protrusion 111 and the bottom edge of the pressing portion 12 is higher than the vertical height of the upper gap of the locking hole 21 of the support column 2.

[0045] FIG. 6 is a second explanatory view showing the insertion into the locking hole in the auxiliary tool of the present invention.

[0046] The clip portion 13 is made of a material that can be bent (deflected) by the user's finger pressure. For example, the auxiliary tool 1 integrally formed of polypropylene or ABS resin can be easily bent by the degree of the user's finger pressure, and a repulsive force that tries to return to the original shape also occurs. As a result, a repulsive force is generated between the fitting portion 11 and the pressing portion 12 at both ends of the clip portion 13 to maintain a parallel separation from each other. That is, the clip portion 13 is bent by the user's finger pressure, and the distance between the fitting portion 11 and the pressing portion 12 is reduced to give a repulsive force.

[0047] According to FIG. 6, the user inserts the auxiliary tool 1 along the upper side of the shelf board 3 while sliding the bottom edge of the pressing portion 12 of the auxiliary tool 1 toward the locking hole 21 of the support column 2. The upper side portion of the tapered protrusion 111 in the fitting portion 11 slides under the upper edge portion of the locking hole 21 of the support column 2, and the auxiliary tool 1 is inserted into the upper gap of the locking hole 21 of the support column 2.

[0048] At this time, a force is applied to move the fitting portion 11 backward by the pressure of the upper edge portion of the locking hole 21 hanging on the fitting portion 11. In order to prevent that, a rear wall 121 is formed on the upper side portion of the pressing portion 12. The rear wall 121 of the pressing portion 12 is formed behind the vertical position of the clip portion 13 to which the fitting portion 11 is continuously provided so as to stop the movement of the end portion of the clip portion 13. As a result, the protrusion 111 cannot move backward even if the clip portion 13 is bent, and conversely, the forward pressure toward the locking hole 21 of the support column 2 can be increased.

[0049] FIG. 7 is a third explanatory view showing the insertion into the locking hole in the auxiliary tool of the present invention.

[0050] According to FIG. 7, when the auxiliary tool 1 is inserted into the upper gap of the locking hole 21 of the support column 2, the fitting portion 11 fits onto the upper edge portion of the locking hole 21 of the support column 2. In particular, the neck portion 112 is hooked under the upper edge portion of the locking hole 21 of the support column 2, and the concave shape between the vertical height of the protrusion portion 111 and the clip portion 13 prevents the protrusion portion 111 from coming out of the locking hole 21 of the support column 2. At this time, the neck portion 112 of the fitting portion 11 is in pressure contact so as to push up the upper edge portion of the locking hole 21 of the support column 2 from below. Also, the pressing portion 12 is in pressure contact so as to press down the upper side portion of the locking portion 31 of the shelf board 3. Such a repulsive force of the auxiliary tool 1 in the vertical direction acts to maintain a parallel separation between the fitting portion 11 and the pressing portion 12 by the deflection of the clip portion 13 contracted by the user's finger pressure.

[0051] FIG. 8 is a first explanatory diagram showing the state when the fitting is removed from the locking hole in the auxiliary tool of the present invention.

[0052] According to FIG. 8, with respect to the auxiliary tool 1 fitted into the upper gap of the locking hole 21 of the support column 2, the user is depressing and deflecting the upper edge portion of the clip portion 13 with the thumb. By the user pushing in the upper edge portion of the clip portion 13 with the thumb, the parallel separation between the fitting portion 11 and the pressing portion 12 contracts. As a result, the protrusion portion 111 of the fitting portion 11 becomes lower than the upper edge portion of the locking hole 21 of the support column.

[0053] FIG. 9 is a second explanatory diagram showing the state when the fitting is removed from the locking hole in the auxiliary tool of the present invention.

[0054] According to FIG. 9, the user pulls out the clip portion 13 of the auxiliary tool 1 along the upper side of the shelf board 3. As a result, the neck portion 112 of the fitting portion 11 comes off from the upper edge portion of the locking hole 21 of the support column 2, and the bottom side of the pressing portion 12 slides along the upper side of the shelf board 3.

[0055] At this time, due to the deflection of the clip portion 13 corresponding to the pressure when pulling out the auxiliary tool 1 from the locking hole 21 of the support column 2, a force is applied to pull the fitting portion 11 backward. To prevent this, a front wall 122 is formed on the upper side portion of the pressing portion 12. The front wall 122 of the pressing part 12 is formed in front of the vertical position of the tip of the fitting part 11 so as to stop the movement of the fitting part 11. As a result, the protrusion 111 is less likely to be pulled back forward even if the clip part 13 is bent, and conversely, it becomes easier to come out of the locking hole 21 of the support column 2.

[0056] Figure 10 is a third explanatory view showing the state when the fitting part is removed from the locking hole in the auxiliary tool of the present invention.

[0057] According to Figure 10, when the user pulls the index finger passed through the substantially circular or substantially rectangular shape of the clip part 13, finally, the protrusion 111 of the fitting part 11 also comes out of the locking hole 21 of the support column 2. In this way, the auxiliary tool 1 can be removed from the locking hole 21 of the support column 2.

[0058] Figure 11 is a perspective view of a wide auxiliary tool having a wide clip part in the present invention. Figure 12 is a six-side view of the wide auxiliary tool of the present invention.

[0059] According to Figures 11 and 12, compared with Figures 2 and 4 described above, the horizontal second width of the clip part 13 is wider (for example, 7.5 mm) than the horizontal first width (for example, 5 mm) of the fitting part 11 and the pressing part 12. The fitting part 11 is inserted into the locking hole 21 of the support column 2 only up to the part where it is connected to the clip part 13. By widening the horizontal width (second width) of the clip part 13, the area where the clip part 13 presses against the surface of the peripheral part of the locking hole 21 can be widened. As a result, the pressure contact between the peripheral part of the locking hole 21 of the support column 2 and the clip part 13 can be stabilized.

[0060] Figure 13 is a perspective view of a multi-stage auxiliary tool having a plurality of fitting parts in a stepped shape in the present invention. Figure 14 is a six-side view of the multi-stage auxiliary tool with a stepped shape of the present invention.

[0061] According to FIGS. 13 and 14, compared with FIGS. 2 and 4 described above, the fitting portion 11 is formed in a plurality of stepped levels. The fitting portion 11 is composed of a first-stage fitting portion 11a and a second-stage fitting portion 11b. The first-stage fitting portion 11a is continuously provided with the second-stage fitting portion 11b toward the locking hole 21 of the inserted support column 2, and the second-stage fitting portion 11b is continuously provided with the clip portion 13. Further, the first-stage fitting portion 11a is formed at the lowest height, the second-stage fitting portion 11b is formed at the middle height (the upper height of the first-stage fitting portion), and the clip portion 13 continuously provided with the fitting portion 11 is formed at the uppermost height.

[0062] The first-stage fitting portion 11a and the second-stage fitting portion 11b are respectively used according to the different heights of the upper gaps of the locking holes 21 of the support column 2. That is, either the first-stage fitting portion 11a or the second-stage fitting portion 11b is fitted to the upper edge portion of the locking hole 21 of the support column 2.

[0063] The first-stage fitting portion 11a forms a first-stage protrusion portion 111a facing the locking hole of the support column and a concave first-stage head portion 112a continuously provided between the first-stage protrusion portion 111a and the second-stage fitting portion 11b. In addition, the second-stage fitting portion 11b forms a second-stage protrusion portion 111b continuously provided with the first-stage fitting portion 11a facing the locking hole of the support column and a concave second-stage head portion 112b continuously provided between the second-stage protrusion portion 111b and the clip portion 13. And it is formed such that the second height between the second-stage head portion 112b and the pressing portion 12 is higher than the first height between the first-stage head portion 112a and the pressing portion 12.

[0064] The first-stage protrusion portion 111a and the second-stage protrusion portion 111b are formed on an inclined surface such that the height of the tip portion is low and the height of the rear end portion is high. Thereby, when being inserted into the upper gap of the locking hole of the support column, the first-stage protrusion portion 111a or the second-stage protrusion portion 111b can slide under the upper edge portion of the locking hole 21 of the support column 2.

[0065] FIG. 15 is an explanatory diagram of the insertion of the first-stage fitting portion into the locking hole in the multi-stage auxiliary tool of FIGS. 13 and 14. FIG. 16 is an explanatory view showing that the second-stage fitting portion is inserted into the locking hole in the multi-stage auxiliary tool of FIGS. 13 and 14.

[0066] According to FIG. 15, the upper gap of the locking hole 21 of the support column 2 is short, and according to FIG. 16, the upper gap of the locking hole 21 of the support column 2 is long. The length of the upper gap is determined by the relationship between the vertical length of the locking hole 21 of the support column 2 and the vertical length occupied by the locking portion 21 of the shelf board 3 being fitted. The longer the vertical length of the locking hole 21 of the support column 2, the longer the length of the upper gap.

[0067] According to FIG. 15, the first-stage head portion 112a of the first-stage fitting portion 11a is hooked under the upper edge portion of the locking hole 21 of the support column 2, and the escape of the first-stage protrusion portion 111a from the locking hole 21 of the support column 2 is prevented. At this time, the hooked first-stage head portion 112a presses against the upper edge portion of the locking hole 21 of the support column 2 so as to push it up from below.

[0068] According to FIG. 16, the second-stage head portion 112b of the second-stage fitting portion 11b is hooked under the upper edge portion of the locking hole 21 of the support column 2, and the escape of the second-stage protrusion portion 111b from the locking hole 21 of the support column 2 is prevented. At this time, the hooked second-stage head portion 112b presses against the upper edge portion of the locking hole 21 of the support column 2 so as to push it up from below.

[0069] Common to FIGS. 15 and 16, the pressing portion 12 presses against the upper side portion of the locking portion 31 of the shelf board 3 so as to press it down. Due to the repulsive force of the auxiliary tool 1 in the vertical direction, it acts to maintain a parallel separation between the fitting portion 11 and the pressing portion 12. According to FIGS. 15 and 16, even for different lengths of the upper gap of the locking hole 21 of the support column 2, it can be handled by only one auxiliary tool 1.

[0070] FIG. 17 is a perspective view of a multi-stage auxiliary tool having a plurality of fitting portions in different directions in the present invention. FIG. 18 is a six-side view of the multi-stage auxiliary tool in multiple directions of the present invention.

[0071] According to FIGS. 17 and 18, compared with FIGS. 2 and 4 described above, a plurality of fitting portions 11 are formed in different directions via clip portions 13. The fitting portions 11 are formed in a plurality of directions when viewed from the clip portions. The fitting portions 11 include a first-stage fitting portion 11c and a second-stage fitting portion 11d connected in series in a direction different from that of the first-stage fitting portion 11c via the clip portion 13. The first-stage fitting portion 11c is formed to extend in the first tangential direction of the clip portion 13, and the second-stage fitting portion 11d is formed to extend in the second tangential direction of the clip portion 13. According to FIGS. 17 and 18, the first-stage fitting portion 11c and the second-stage fitting portion 11d are formed in different tangential directions by rotating or inverting each other by 180 degrees. Of course, the present invention is not limited to this, and different tangential directions may be those obtained by rotating and inverting at angles of 90 degrees, 120 degrees, or 180 degrees. The first-stage fitting portion 11c extends in parallel with the pressing portion 12c, and the second-stage fitting portion 11d extends in parallel with the pressing portion 12d.

[0072] According to FIGS. 17 and 18, similar to FIGS. 13 and 14, the first-stage fitting portion 11c and the second-stage fitting portion 11d are selectively used according to different heights of the upper gaps of the locking holes 21 of the support column 2. That is, either the first-stage fitting portion 11c or the second-stage fitting portion 11d is adapted to fit into the upper edge of the locking hole 21 of the support column 2.

[0073] Also, according to FIGS. 17 and 18, similar to FIGS. 13 and 14, the first-stage fitting portion 11c forms a first-stage protrusion portion 111c facing the locking hole of the support column and a concave first-stage neck portion 112c connected between the first-stage protrusion portion 111c and the clip portion 13. The second-stage fitting portion 11d forms a second-stage protrusion portion 111d facing the locking hole of the support column and a concave second-stage neck portion 112d connected between the second-stage protrusion portion 111d and the clip portion 13. The second height between the second-stage neck portion 112d and the pressing portion 12d is formed to be higher than the first height between the first-stage neck portion 112c and the pressing portion 12c.

[0074] The first-stage protruding portion 111c and the second-stage protruding portion 111d are formed on an inclined surface such that the height of the tip portion is low and the height of the rear end portion is high. Thus, when being inserted into the upper gap of the locking hole of the support column, the first-stage protruding portion 111c or the second-stage protruding portion 111d can slide under the upper edge of the locking hole 21 of the support column 2.

[0075] In addition, according to FIGS. 15 and 16, the rear wall of the pressing portion 12c extending parallel to the first-stage fitting portion 11c and the rear wall of the pressing portion 12d extending parallel to the second-stage fitting portion 11d are commonly connected and provided as a rear wall 121. The rear wall 121 is formed in a crisscross pattern inside the ring of the clip portion 13. Thus, it also functions as reinforcement for the ring of the clip portion 13. However, as shown in FIGS. 5 to 10, FIGS. 15, and 16, the user cannot hold the clip portion 13 by passing the index finger through the ring of the clip portion 13 and applying finger pressure with the thumb from above the clip portion 13. Therefore, in the case of FIGS. 15 and 16, the user holds the clip portion 13 by pinching both side portions of the clip portion 13 with the thumb and the middle finger and applying finger pressure with the index finger from above the clip portion 13.

[0076] FIG. 19 is an explanatory diagram showing the first-stage fitting portion inserted into the locking hole in the multi-stage auxiliary tool of FIGS. 17 and 18. FIG. 20 is an explanatory diagram showing the second-stage fitting portion inserted into the locking hole in the multi-stage auxiliary tool of FIGS. 17 and 18.

[0077] According to FIG. 19, the upper gap of the locking hole 21 of the support column 2 is short, and according to FIG. 20, the upper gap of the locking hole 21 of the support column 2 is long. According to FIG. 19, the first-stage head portion 112c of the first-stage fitting portion 11c is hooked under the upper edge of the locking hole 21 of the support column 2, preventing the first-stage protruding portion 111c from coming out of the locking hole 21 of the support column 2. At this time, the hooked first-stage head portion 112c is in pressure contact to push up the upper edge of the locking hole 21 of the support column 2 from below.

[0078] According to FIG. 20, the second-stage leading part 112d of the second-stage fitting part 11d is hooked under the upper edge of the locking hole 21 of the support column 2, preventing the second-stage protrusion part 111d from coming out of the locking hole 21 of the support column 2. At this time, the hooked second-stage leading part 112d is in pressure contact so as to push up the upper edge of the locking hole 21 of the support column 2 from below.

[0079] Common to FIGS. 19 and 20, the pressing part 12 is in pressure contact so as to press down the upper side of the locking part 31 of the shelf board 3. Due to the repulsive force of the auxiliary tool 1 in the vertical direction, it acts to maintain a parallel separation between the fitting part 11 and the pressing part 12.

[0080] According to FIGS. 13 to 20, even for different lengths of the upper clearance of the locking hole 21 of the support column 2, it can be dealt with by only one auxiliary tool 1.

[0081] As described in detail above, according to the auxiliary tool of the present invention, for an assembled shelf in which the locking part on the side of the shelf board is loosely fitted into the locking hole of the support column, it is possible to prevent the locking part of the shelf board from coming off from the locking hole of the support column.

[0082] According to the various embodiments of the present invention described above, those skilled in the art can easily make various changes, modifications and omissions within the scope of the technical idea and perspective of the present invention. The above description is merely an example and is not intended to impose any restrictions. The present invention is limited only by the scope of the claims and their equivalents.

Explanation of Reference Numerals

[0083] 1 Auxiliary tool 11 Fitting part 11a, 11c First-stage fitting part 11b, 11d Second-stage fitting part 111 Protrusion part 111a, 111c First-stage protrusion part 111b, 111c Second-stage protrusion part 112 Leading part 112a, 112c First-stage leading part 112b, 112d Second-stage leading part 12, 12c, 12d pressing parts 121 rear wall 122 front wall 13 clip part 2 struts 21 locking holes 3 shelf boards 31 locking parts

Claims

1. An auxiliary tool for preventing the locking portion of the shelf board from coming off the locking hole of the support column with respect to an assembled shelf in which the locking portion on the side of the shelf board is loosely fitted into the locking hole of the support column, a fitting portion and a pressing portion that extend parallel to each other and are spaced apart so as to be inserted into an upper clearance for removal formed in the locking hole of the support column, clip portions continuously provided at one end of each of the fitting portion and the pressing portion, and having, when the fitting portion is inserted into the upper clearance of the locking hole of the support column, it fits with the upper edge portion of the locking hole of the support column, when the pressing portion is inserted into the upper clearance of the locking hole of the support column, it presses down the upper side portion of the locking portion of the shelf board, the clip portion is formed to provide a repulsive force for maintaining a parallel separation between the fitting portion and the pressing portion and to contract by finger pressure, characterized in that it is an auxiliary tool.

2. The clip portion is formed in a substantially circular shape, the fitting portion is formed to extend in an arbitrary tangential direction of the substantially circle, the pressing portion is formed to extend parallel to the tangential direction in which the fitting portion extends, or, the clip portion is formed in a substantially angular shape with a plurality of corners, the fitting portion is formed to extend in an arbitrary side direction of the substantially angular shape, the pressing portion is formed to extend parallel to the side direction in which the fitting portion extends, characterized in that it is the auxiliary tool according to Claim 1.

3. The fitting portion, the clip portion, and the pressing portion are continuously provided integrally and are formed of resin. characterized in that it is the auxiliary tool according to Claim 1.

4. The fitting portion, forms a protrusion portion facing the locking hole of the support column and a concave neck portion that continuously connects between the protrusion portion and the clip portion, when inserted into the upper clearance of the locking hole of the support column, the neck portion is hooked under the upper edge portion of the locking hole of the support column, preventing the protrusion portion from coming out of the locking hole of the support column, characterized in that it is the auxiliary tool according to Claim 1.

5. The protrusion portion is formed on an inclined surface such that the height of the tip portion is low and the height of the rear end portion is high, when inserted into the upper clearance of the locking hole of the support column, the protrusion portion slides under the upper edge portion of the locking hole of the support column, characterized in that it is the auxiliary tool according to Claim 4.

6. The fitting portion has a first width that can be inserted into the locking hole of the support column, the clip portion has a second width that is wider than the first width so as to press against the peripheral portion other than the locking hole of the support column, characterized in that it is the auxiliary tool according to Claim 1.

7. The fitting portion is formed in a plurality of stepped stages, and has a first-stage fitting portion and a second-stage fitting portion continuously provided above the first-stage fitting portion. The first fitting part is continuously provided with the second fitting part, and the second fitting part is continuously provided with the clip part. It has a common pressing part that extends parallel to the first fitting part and the second fitting part. The auxiliary tool according to claim 1, characterized in that.

8. The fitting part is formed in a plurality of directions when viewed from the clip part, and has a first fitting part and a second fitting part that is continuously provided in a direction different from that of the first fitting part via the clip part. The first fitting part and the second fitting part are each continuously provided with the clip part. Each of the first fitting part and the second fitting part has a separate pressing part that extends parallel to it. The auxiliary tool according to claim 1, characterized in that.

9. According to the different heights of the upper gaps of the locking holes of the support column, either the first fitting part or the second fitting part fits into the upper edge part of the locking hole of the support column. The auxiliary tool according to claim 7 or 8, characterized in that.

10. The first fitting part forms a first-stage protrusion part facing the locking hole of the support column and a concave first-stage head part continuously provided to the first-stage protrusion part. The second fitting part forms a second-stage protrusion part continuously provided to the first fitting part and a concave second-stage head part continuously provided to the second-stage protrusion part. It is formed so that the second height between the second-stage head part and the pressing part is higher than the first height between the first-stage head part and the pressing part. Either the first-stage head part or the second-stage head part is hooked under the upper edge part of the locking hole of the support column, and the first-stage protrusion part or the second-stage protrusion part from the locking hole of the support column is prevented from coming off. The auxiliary tool according to claim 9, characterized in that.

11. The first-stage protrusion part and the second-stage protrusion part are formed on an inclined surface so that the height of the tip part is low and the height of the rear end part is high. When inserted into the upper gap of the locking hole of the support column, the first-stage protrusion part or the second-stage protrusion part slides under the upper edge part of the locking hole of the support column. The auxiliary tool according to claim 10, characterized in that.

12. When inserted into the upper gap of the locking hole of the support column, in order to prevent the fitting part from moving backward due to the deflection of the clip part. In the extending direction inserted into the locking hole of the support column, the pressing part is formed longer than the fitting part. The pressing part forms a rear wall that stops the movement of the end part of the clip part behind the vertical position of the clip part to which the fitting part is continuously provided. The auxiliary tool according to claim 1, characterized in that.

13. When removed from the upper gap of the locking hole of the support column, in order to prevent the fitting part from moving forward due to the deflection of the clip part. In the longitudinal direction inserted into the locking hole of the support column, the pressing portion is formed longer than the fitting portion. The pressing portion forms a front wall that stops the movement of the fitting portion in front of the vertical position of the tip of the fitting portion. The auxiliary tool according to claim 1, characterized in that.

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