JP6496943B2 - Fall prevention structure and shelf - Google Patents

Description

  The present invention relates to a fall prevention structure for a load and a shelf provided with the structure.

  When a vibration caused by an earthquake or the like is applied to the shelf, an object (load) stored on the shelf board may fall from the frontage. In order to prevent such falling of the load, a mountain-shaped member is attached so that the front edge of the shelf is higher than the placement surface, and the load is prevented from falling from the front side of the shelf. A prevention structure is known (see, for example, Patent Document 1).

  The fall prevention structure described in Patent Document 1 is fixed by sandwiching the upper surface (mounting surface) and the lower surface (leg portions placed on the shelf holder) of the shelf so that it can be retrofitted to the front edge of the shelf. Has a structure. In order to secure the fixing force, the fall prevention structure requires a planar portion that is pressed against the placement surface with a certain area or more from the front end portion of the shelf board. The fall prevention structure is fixed to the front edge portion of the shelf board by a pressing force on the placement surface in the planar portion, a frictional force between the planar portion and the placement surface, or the like.

Japanese Utility Model Publication No. 06-55446

  The planar portion occupies a certain width from the front end portion of the placement surface. Due to this occupied portion, the depth of the mounting surface of the shelf board after the conventional fall prevention structure is attached is shortened, and the storage space for the load is narrowed.

  In a shelf board with a conventional fall prevention structure, if a load is placed on a surface portion so as to be stored, the load easily slides back and forth on the mounting surface due to vibration. . If it does so, it will become easy to drop a load exceeding the mountain-shaped site | part of a front edge part. To prevent this, it is better to make the mountain-shaped portion higher, but if the mountain-shaped portion is raised, the convenience for storing and taking out the load decreases.

  Furthermore, the conventional fall prevention structure is fastened to the shelf using screws or the like in order to securely fix it to the front edge of the shelf. For this reason, it is necessary to process a screw hole on the shelf so as to match the fall prevention structure. Therefore, the conventional fall prevention structure is a structure in which the ease of attachment is impaired in order to firmly fix the shelf board.

  As described above, even if the conventional fall prevention structure is a structure that is easy to mount, the storage space of the load is pressed and the storage efficiency is hindered. In order to prevent the storage efficiency from being lowered, when the load is stored while being placed on a part of the fall prevention structure, the load is easily dropped. In order to enhance the fall prevention effect, it is only necessary to raise the mountain-shaped part of the fall prevention structure, but the convenience during storage is impaired, and processing to the shelf board is required for more secure fixation, so firm fixation is required It is difficult to make it easy.

  The present invention has been made in order to solve the above-described problems of the prior art, and can be easily and securely attached and fixed to a shelf board storing a load. An object of the present invention is to provide a fall prevention structure, a shelf board, and a shelf that can surely prevent a fall without being pressed.

  The present invention includes a shelf board having a loading surface for a load, a load fall prevention member attached to a front edge portion of the shelf board, a locking member that is locked to a part of the shelf board, A load-falling-preventing portion that protrudes above the front edge end portion of the placement surface, the load-falling-preventing member and a fixing member that fixes the locking member together. And a load movement preventing portion that can contact a front side surface of the load placed on the placement surface.

  According to the present invention, it is possible to easily and reliably attach and fix a shelf board storing a load, and it is possible to reliably prevent a drop without pressing a storage space.

It is a front view which shows the example of the shelf provided with the fall prevention structure which concerns on this invention. It is a perspective view which shows the example of the shelf board with which the said shelf is equipped. It is a side view of the said shelf board. It is an enlarged side view which shows the example of the fall prevention structure which concerns on this invention. It is a partially expanded side view of the fall prevention structure. It is a partially expanded perspective view of the fall prevention structure. It is a side view which shows another example of the said fall prevention structure.

  Hereinafter, embodiments of the fall prevention structure according to the present invention will be described. First, an embodiment of a storage shelf including a fall prevention mechanism will be described.

Configuration of Storage Shelf As shown in FIG. 1, a shelf 100 that is a storage shelf includes a shelf board 20 having a fall prevention device 10 that is a fall prevention mechanism, a shelf holder 30, and a support column 40. The shelf board 20 is a surface member having a placement surface 21 on which the load 50 is placed, and the fall prevention tool 10 is mounted on the edge portion of the front surface. The shelf receiver 30 is a support member that supports the shelf board 20 at a predetermined height position. The support column 40 is a vertical support member that locks the shelf holder 30 at a predetermined height position. The shelf 100 having the above configuration is, for example, a multi-column storage shelf including a plurality of support columns 40 in the front-rear direction (depth direction).

  In addition, the shelf 100 should just have the shelf board 20 which can attach the fall prevention tool 10 provided with the characteristic demonstrated below, and the shelf holder 30 is fixed to the single support | pillar 40 in the front-back direction (depth direction). A single-column storage shelf may be used.

  In the aspect in which the shelf board 20 to which the fall prevention tool 10 is attached is supported by the shelf holder 30, the front edge of the shelf board 20 is higher than the rear edge. That is, in the state where the shelf board 20 is supported by the shelf receiver 30, the placement surface 21 is inclined downward in the depth direction. The downward inclined structure of the mounting surface 21 will be described later.

  In addition, since the fall prevention tool 10 can be retrofitted with respect to the shelf board 20, you may attach to all the shelf boards 20 which the shelf 100 has, and may attach to only one part.

  As shown in FIG. 2, the shelf board 20 is a plate-like surface member having a mounting surface 21 that spreads in a planar shape in the longitudinal direction and the lateral direction. The shelf board 20 has bent portions 23 at both ends in the longitudinal direction. The bent portion 23 is formed by bending a portion extending from the end portion in the longitudinal direction of the mounting surface 21 downward. The bent portion 23 is placed on the receiving portion of the shelf receiver 30 and constitutes a leg portion that supports the shelf board 20 at a predetermined height position. The fall prevention tool 10 is attached to one end portion (front edge portion) of the shelf board 20 in the short direction, and the fall prevention tool 10 has a length similar to the length of the shelf board 20 in the longitudinal direction. . Therefore, the fall prevention tool 10 is attached over substantially the entire longitudinal direction of the shelf board 20.

  FIG. 3 is a side view of the shelf board 20 as seen from the end side in the longitudinal direction. As shown in FIG. 3, the shelf board 20 includes a placement surface 21 on which the load 50 is placed, a front leg portion 22, a bent portion 23, and a rear leg portion 24.

  The front leg portion 22 and the rear leg portion 24 are respectively bent at both ends in the short direction of the shelf plate 20 downward, and further bent inward at a predetermined length position, and then the end portion is moved upward at the predetermined length position. It is formed by bending. The front leg portion 22 and the rear leg portion 24 have a “deformed U-shape” shape in a side view. A second member 12 that is a locking member is hooked on the rising portion 221 inside the front leg portion 22, and the first member 11 that is a load fall prevention member is a shelf board by being coupled with the second member 12. It is fixed to 20 leading edge portions.

  The front leg portion 22 and the rear leg portion 24 also serve as a reinforcing portion that adds strength to the shelf board 20. Further, the front leg portion 22 and the rear leg portion 24 are placed on the receiving portion of the shelf holder 30 and constitute a leg portion that supports the shelf board 20 at a predetermined height position.

Next, details of the fall prevention structure according to the present invention will be described. As shown in FIG. 4, the fall prevention device 10 constituting the fall prevention structure includes a first member 11 that is a load fall prevention member, a second member 12 that is a locking member, and a coupling member 13 that is a fixing member. And.

  The first member 11 is a member having a length equal to or slightly shorter than the length in the longitudinal direction of the shelf board 20, and includes an inclined portion 112, a front surface portion 114, and a bottom surface portion 115. Have. Although the 1st member 11 is metal, for example, it is not restricted to this.

  The front surface portion 114 is a first flat surface portion that is in contact with the front surface of the front leg portion 22 of the shelf board 20 and covers the front edge upper portion of the shelf board 20 from the front edge lower portion. A mountain-shaped portion 111 is formed at the upper end of the front surface portion 114 in the height direction.

  In addition, the inclined portion 112 that is an inclined surface that is continuous with the mountain-shaped portion 111 and is formed obliquely downward on the depth side of the shelf board 20 has a predetermined end of the inclined end 113 that is the end above the mounting surface 21. In the height position. The inclined end portion 113 is located on the placement surface 21 and on the far side of the front edge portion of the shelf board 20 in a state where the mountain-shaped portion 111 is fixed above the front edge portion of the shelf board 20. A slight gap is formed between the inclined end portion 113 and the mounting surface 21.

  The mountain-shaped portion 111 and the inclined portion 112 form a load fall prevention portion that prevents the load 50 stored on the placement surface 21 from falling from the front edge of the shelf board 20 due to a vibration such as an earthquake. The load drop prevention portion is formed so as to protrude above the front edge end portion of the placement surface 21. The inclined portion 112 and the inclined end portion 113 form a load movement preventing portion that prevents the load 50 from moving toward the front edge of the shelf board 20 due to vibration. The load movement prevention unit is formed at a position where it can contact the front side surface of the load 50 placed on the placement surface 21.

  Even if the load 50 accommodated in the placement surface 21 is moved on the placement surface 21 toward the front by the vibration, the movement of the load 50 is stopped by the load movement prevention unit. Even if the load 50 does not stop at the load movement prevention unit, the load fall prevention unit can prevent the load 50 from dropping from the shelf board 20.

  The bottom surface portion 115 is formed by bending the lower end of the front surface portion 114 about 90 degrees toward the depth side. The bottom surface portion 115 is in contact with the outside of the flat portion of the lower surface of the front leg portion 22 and has a depth dimension longer than that of the front leg portion 22. A hole that allows the coupling member 13 that is a fixing member to pass therethrough is formed in a part of the bottom surface portion 115.

  The 2nd member 12 has the hook part 121 which is a latching part, and the plane part 122 which is a coupling part. The hook portion 121 is a bent portion that engages with a rising portion 221 that is a rising surface of the front leg portion 22 of the shelf board 20, and is a locking portion having a folded shape that is hooked on the rising portion 221. The flat surface portion 122 is in contact with the upper surface side of the bottom surface portion 115 of the first member 11 and reaches the rising portion 221 of the front leg portion 22 from the end portion of the bottom surface portion 115. The flat portion 122 is also formed with a hole through which the coupling member 13 passes. When the rising portion 221 of the second member 12 is hooked on the hook portion 121 and the positions of the holes of the flat surface portion 122 and the bottom surface portion 115 are aligned and coupled using the coupling member 13, the first member 11 becomes the second member 12. At the same time, the front edge of the shelf 20 is securely fixed.

Method for Attaching the Fall Prevention Structure Next, a method for attaching the fall prevention tool 10 to the shelf board 20 will be described with reference to FIG. First, in a state where the inclined end portion 113 of the first member 11 is in contact with the placement surface 21, the bottom surface portion 115 is pushed in while sliding against the outer bottom surface (shelf plate bottom surface portion 222) of the front leg portion 22. The inner surface of the front surface portion 114 of the one member 11 is brought into surface contact with the outer surface of the front leg portion 22 of the shelf board 20.

  Next, the hook portion 121 of the second member 12 is hooked on the rising portion 221 of the front leg portion 22 so that the flat surface portion 122 and the upper surface of the bottom surface portion 115 of the first member 11 are in contact with each other.

  Finally, the coupling member 13 is inserted into the holes provided in the bottom surface portion 115 and the flat surface portion 122, and the first member 11 and the second member 12 are fastened and coupled. As a result, the rising portion 221 of the shelf board 20 is pressed against the bottom surface portion 115 of the first member 11 by the hooking portion 121 to apply a force for fixing in the vertical direction. Moreover, since the hook part 121 also restricts the movement of the rising part 221 in the front-rear direction, the first member 11 and the front part 114 of the shelf board 20 are fixed in contact with each other.

  As described above, the fall prevention device 10 that can be attached to the shelf board 20 can be retrofitted to the already used shelf 100. The attachment method of the fall prevention tool 10 is an easy method as above-mentioned. That is, after applying a part of the first member 11 (inclined end 113) to the vicinity of the front edge of the shelf board 20 and pushing it in the depth direction, the second member 12 is attached to the shelf board 20 and the coupling member 13 is attached. It is only fastened using.

  Since the coupling member 13 is inserted from the bottom to the top of the first member 11, the coupling operation for coupling the first member 11 and the second member 12 can be easily performed. Moreover, the first member 11 is firmly fastened to the second member 12 locked to the shelf board 20 by the coupling member 13. As described above, the fall prevention device 10 can be easily attached to the shelf board 20 and can be easily and firmly fixed, and does not require processing on the shelf board 20.

  Various coupling members can be used as the coupling member 13. For example, a push rivet can be used as the coupling member 13. In this case, if the holes formed in the bottom surface portion 115 and the flat surface portion 122 are not screw holes, the first member can be obtained by inserting and pushing a push rivet into the hole in the flat surface portion 122 from the bottom surface portion 115 side. 11 and the second member 12 can be combined.

  A screw may be used as the coupling member 13. In this case, if the hole formed in the flat surface portion 122 of the second member 12 is a screw hole, the first member 11 is screwed into the screw hole by inserting the coupling member 13 inserted into the first member 11. And the second member 12 can be combined.

Effect of Fall Prevention Structure FIG. 5 is an enlarged side view of a part of the state in which the fall prevention tool 10 is attached to the shelf board 20. As shown in FIG. 5, when the fall prevention device 10 is attached to the front edge of the shelf board 20, the mountain-shaped portion 111 of the first member 11 is fixed at a position corresponding to “height h” from the placement surface 21. . Here, the “height h” may be about 2 mm to 7 mm, for example. A suitable height h is about 5 mm.

  The first member 11 has an inclined portion 112 that forms an “inclination angle θ” with the mountain-shaped portion 111 as a vertex. The inclined portion 112 is a surface that is inclined in the depth direction from the mountain-shaped portion 111 toward the placement surface 21. The inclined portion 112 is an inclined surface that slides a part of the load 50 toward the placement surface 21 when storing the load 50 from the front of the shelf board 20. Therefore, the inclination angle θ of the inclined portion 112 is an angle suitable for the load 50 to slide down toward the back side of the shelf board 20. In addition, the inclination angle θ is an angle at which the load 50 can be easily lifted by sliding while applying the lower end angle of the load 50 when the load 50 is taken out from the frontage. The inclination angle θ is preferably about 53 degrees, for example.

  An inclined end portion 113 which is a tip of the inclined portion 112 is located at a position corresponding to “depth d” from the front outer side of the first member 11. If the depth d is too long, the space for storing the load 50 is pressed and the storage efficiency in the shelf 100 is reduced. Therefore, it is desirable that the inclined end portion 113 has such a dimension that the depth dimension on the placement surface 21 is not excessively reduced. In other words, the dimension of the depth d may be a dimension that does not compress the storage space of the load 50. In addition, about 3-8 mm is suitable for the dimension of the depth d.

  The inclined end portion 113 forms a step S that contacts the vicinity of the lower end of the load 50 on the placement surface 21. The height dimension of the step S is determined by the thickness of the first member 11, the height h of the mountain-shaped portion 111, the inclination angle θ, and the dimension of the gap from the placement surface 21 to the inclined end portion 113. The height dimension of the step S is preferably about 0.5 mm to 5 mm. The gap formed between the mounting surface 21 and the inclined end portion 113 is the shelf plate 20 in a state where the end portion of the rising portion 221 of the shelf plate 20 is in contact with the hook portion 121 of the second member 12. Occurs when the first member 11 and the second member 12 are sandwiched.

  If the shelf 100 is a mobile shelf having a so-called lock device, the lock device is released when an earthquake is detected, and the seismic isolation state is obtained in the traveling direction. The movable shelves in the seismic isolation state can receive the vibrations with each shelf being movable according to the vibrations.

  However, in the case where the initial slight vibration continues for a long time, depending on the sensitivity of the locking device, the seismic isolation state may not be achieved, and even if the seismic isolation state occurs, the vibration is related to the following ability of the wheels on each shelf. You may not be able to pass. In such a case, since the energy of slight vibration continues to be applied to the shelf 100, the load 50 changes from a static load to a dynamic load depending on the storage location.

  When the load 50 changes to a dynamic load, the load 50 moves so as to slide on the placement surface 21, and thereby moves on the placement surface 21 in the front-rear direction. Since there is a backrest on the back side of the shelf board 20, the load 50 moves mainly toward the front face (front face) side.

  Accordingly, as the slight vibration is continuously applied to the shelf 100 as described above, the load 50 is slid on the setting surface 21 and moved in the frontage direction, or the load 50 is moved on the setting surface due to the state of vibration. Move up and down (jump). In particular, when the load 50 is a book, a rocking phenomenon is likely to occur.

  Even if the load of the load 50 due to the above-described slight vibration and the locking phenomenon itself cannot be prevented, if the fall prevention device 10 is attached to the front surface of the shelf board 20, the load 50 is It can prevent falling from the opening of the shelf board 20. The inclined end portion 113 of the fall prevention tool 10 prevents the load 50 from moving toward the frontage due to the vibration by the step S. The height dimension of the step S is very low with respect to the height dimension of the load 50. However, since the momentum that the load 50 moves due to slight vibration is not strong, the load 50 is prevented from moving to the front end of the shelf board 20 even in a step having a small size such as the step S described above. Can do.

  Further, since the first member 11 has a gap between the inclined end portion 113 and the placement surface 21, the first member 11 can be displaced forward when the load 50 hits the inclined end portion 113. Due to this displacement, the forward movement energy of the load 50 is absorbed. Therefore, even if the vibration continues to be applied and the load 50 tries to move toward the frontage, the load 50 is prevented from moving at the step S. The displacement of the first member 11 occurs in the rotation direction around the coupling member 13.

  Further, the height h of the mountain-shaped portion 111 is set to a dimension that does not exceed when the load 50 moves up and down due to slight vibration. Therefore, even if the load 50 moves beyond the step S in the frontage direction, the load 50 can be effectively prevented from falling by the mountain-shaped portion 111 that is the load drop prevention portion.

  FIG. 6 is a perspective view showing a state in which the fall prevention device 10 is attached to the shelf board 20 and supported by the shelf holder 30. In FIG. 6, a part of the shelf holder 30 is not shown. As shown in FIG. 6, the first member 11 is attached to the front surface of the shelf board 20, the second member 12 is hooked on the rising portion 221 of the shelf board 20, and the first member 11 and the first member 11 are joined using the coupling member 13. The two members 12 are combined and placed on the shelf holder 30.

  Accordingly, the shelf plate 20 to which the fall prevention device 10 is attached is supported by the bottom portion 115 of the first member 11 being in contact with the receiving portion of the shelf receiver 30, so that when the load 50 is placed on the placement surface 21, the load Therefore, the coupling between the first member 11 and the second member 12 becomes stronger. As a result, the first member 11 is more firmly fixed to the shelf board 20. By being firmly fixed in this way, even if the vicinity of the lower end of the load 50 hits the step S of the first member 11 vigorously, the fall prevention device 10 does not come off the shelf board 20.

  Further, the front side of the placement surface 21 is higher than the shelf side 30 by the thickness of the bottom surface portion 115 of the first member 11 compared to the depth side. That is, as compared with the rear leg portion 24 that is directly placed on the shelf holder 30, the front leg portion 22 is raised by an amount corresponding to the thickness of the bottom surface portion 115, and the placement surface 21 descends from the front side toward the depth side. It becomes an inclined surface.

  Since the loading surface 21 is a downward inclined surface as described above, when the load 50 is changed from a static load to a dynamic load due to the influence of vibration, the load 50 on the loading surface 21 is a shelf plate. It will move toward the back of 20. That is, according to the fall prevention tool 10 which can incline the mounting surface 21, the fall prevention effect of the load 50 is further improved.

Effect of fixing member By the coupling member 13 which is a fixing member, the inclined portion 112 and the inclined end portion 113 which are load movement preventing portions, and the inclined portion 112 and the mountain-shaped portion 111 which are load falling prevention portions are placed. It is fixed at a predetermined position above the surface 21. Further, the inclined portion 112 and the inclined end portion 113, which are the load movement preventing portion, are near the front edge portion of the placement surface 21, closer to the placement surface 21 than the load fall prevention portion, and the load. It arrange | positions in the back | inner side on the mounting surface 21 rather than the fall prevention part. In other words, the structure that prevents the load 50 from dropping can be easily fixed to the front side of the placement surface 21 by the coupling member 13.

Another configuration example of the fall prevention structure Next, another embodiment of the fall prevention mechanism according to the present invention will be described. In addition, about the structure similar to the fall prevention tool 10 already demonstrated, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  As shown in FIG. 7, the fall prevention device 10 according to this embodiment includes a clip member 131 that is folded in a U shape as a fixing member. The clip member 131 is a member having a spring property. The clip member 131 is pressed toward the front of the shelf board 20 by contacting the bottom surface portion 115 of the first member 11 and the end portion of the flat surface portion 122 of the second member 12, and the first member 11. The member 11 and the second member 12 are connected by being sandwiched.

  The clip member 131 is not limited to a specific shape as long as the end portions of the first member 11 and the second member 12 are sandwiched together and fixed as described above. It may be a rubber member.

  By configuring the fixing member with the clip member 131, the fall prevention device 10 can be more easily and firmly fixed to the shelf board 20. That is, it is only necessary to fit the clip member 131 to the end portions of the first member 11 and the second member 12 in a state where the first member 11 is fitted to the shelf plate 20 and the second member 12 is hooked on the rising portion 221. It's okay.

DESCRIPTION OF SYMBOLS 10 Fall prevention tool 11 1st member 12 2nd member 13 Coupling member 20 Shelf board 21 Placement surface 50 Loaded object 100 Shelf 111 Mountainous part 112 Inclination part 113 Inclination edge part

Claims (8)

A shelf board having a loading surface;
A load fall prevention member attached to the front edge of the shelf;
A locking member locked to a part of the shelf board;
A fixing member for fixing the load fall prevention member and the locking member together;
Have
The load fall prevention member is
A load fall prevention part protruding above the front edge end of the mounting surface;
A load movement preventing portion capable of contacting a front side surface of the load placed on the placement surface;
The fall prevention mechanism characterized by having. The locking member is
A locking part hooked on a part of the shelf board;
A coupling portion that is combined with the load fall prevention member,
The fixing member is
A part of the load fall prevention member and the coupling part are sandwiched and coupled,
The fall prevention mechanism according to claim 1. The load fall prevention portion is formed by a mountain-shaped portion protruding upward along the front surface of the shelf board and a downward inclined surface facing the placement surface from the apex of the mountain-shaped portion,
The load movement preventing part is formed by a step between the end of the inclined surface and the mounting surface.
The fall prevention mechanism according to claim 1 or 2. The step is formed on the placement surface at a height of 0.5 mm to 5 mm.
The fall prevention structure according to claim 3. The mountain-shaped portion is formed with a height of 2 mm to 7 mm from the mounting surface described above.
The fall prevention structure according to claim 3 or 4. The tip of the downward inclined surface is at a position of 3 mm to 8 mm from the front surface of the shelf board.
The fall prevention structure according to claim 3 or 4. The locking portion is a bent portion that engages with the rising surface of the shelf board.
The fall prevention structure according to any one of claims 2 to 5. A shelf having a shelf plate on which a load is stored, a shelf holder that supports the shelf board, and a support member that supports the shelf holder in a vertical direction,
A shelf comprising the fall prevention structure according to any one of claims 1 to 6.

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