Loaded object fall prevention device and cargo shelf

Abstract

To provide a simple and effective fall prevention measure.SOLUTION: A loaded object fall prevention device 1 includes: a support section 10 that is immovably provided with respect to a shelf board 90; and a rotating section 30 that is rotatable with respect to the support section 10 about a rotation axis that is parallel to a width direction and substantially horizontal. The rotating section 30 has: an arm section 31 that is rotatably attached to the support section 10; and a restricting section 34 on the front side of a storage section 97 that is located above the shelf board 90. The rotating section 30 is configured to be mutually convertible between a restricted state in which the restricting section 34 restricts the movement of a loaded object 80 stored in the storage section 97 toward the front side, and a take-out state in which the restriction is released because the restricting section 34 is located higher or lower than the restricted state. The loaded object fall prevention device 1 can restrict the movement of the loaded object stored in the storage section toward the front side with a simple structure, and enables easy take-out of the loaded object when necessary.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a luggage fall prevention device used together with a luggage shelf having a shelf board, and the luggage shelf. [Background technology]

[0002] In general, various objects can be stored in the storage areas on the shelves of luggage racks. For example, in case an earthquake occurs and the luggage rack or the entire facility shakes, fall prevention measures are sometimes taken to prevent the stored objects from falling off the luggage rack.

[0003] As a configuration for preventing falling, the following Patent Document 1 discloses a fall prevention device that automatically deploys fall prevention means at a predetermined height position of items stored on a shelf when vibrations occur due to an earthquake or the like, thereby preventing the items from falling. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-106068 A Summary of the Invention [Problem to be solved by the invention]

[0005] The configuration described in the above Patent Document 1 operates a cam mechanism in response to shaking during an earthquake to raise the fall prevention means, which requires a relatively complicated cam mechanism. Furthermore, if shaking occurs that is so large that the cam mechanism does not operate, no fall prevention measures are implemented.

[0006] This invention has been made in consideration of such problems, and aims to provide a luggage fall prevention device and luggage shelf that has a simple structure that can restrict the movement of luggage stored in a storage section toward the front and allow the luggage to be easily removed when necessary. [Means for solving the problem]

[0007] The luggage fall prevention device of the first invention is a luggage fall prevention device used in conjunction with a luggage shelf having a shelf, and comprises a support part that is immovably disposed relative to the shelf, and a rotating part that is rotatable relative to the support part about a rotation axis that is parallel to the width direction and approximately horizontal, the rotating part has an arm part that is rotatably attached to the support part, and a regulating part that is disposed in front of the arm part so as to be located in front of a storage part above the shelf and can be displaced up and down as the rotating part rotates relative to the support part, and the rotating part is configured to be convertible between a restricted state in which the regulating part is located in the same position as a part of the luggage stored in the storage part in the vertical direction, thereby restricting the movement of the luggage toward the front, and a removal state in which the regulating part is located higher or lower than the restricted state, thereby releasing the restriction on the movement of the luggage toward the front.

[0008] With this configuration, it is possible to restrict the movement of the cargo stored in the storage section toward the front with a simple structure, and also to make it possible to easily remove the cargo when necessary.

[0009] In addition, the cargo fall prevention device of the second invention, compared to the first invention, is configured so that in the removed state, the lower end of the rotating part is positioned near the upper surface of the shelf, and is a cargo fall prevention device equipped with a suction structure configured so that in the removed state, a suction force acts between a part of the rotating part and the shelf or support part.

[0010] With this configuration, the removed state can be maintained when the load is to be removed, making it easier to remove the load.

[0011] In addition, the cargo fall prevention device of the third invention is a cargo fall prevention device in which, compared to the first or second invention, the rotating part is configured to maintain the restrained state by gravity when the external force acting is small.

[0012] With this configuration, it is possible to reliably restrict the movement of cargo stored in the storage section toward the front under normal circumstances with a simple structure.

[0013] In addition, the luggage fall prevention device of the fourth invention is a luggage fall prevention device according to any one of the first to third inventions, in which the rotating part has a weight attached at a position further back than the rotating axis of the arm part.

[0014] With this configuration, the rotating part can be operated appropriately regardless of the limitations of the installation space.

[0015] In addition, the fifth invention is a luggage fall prevention device in which, compared to the fourth invention, the weight is attached to the arm portion so that the distance between the position at which the weight is attached to the arm portion and the rotation axis can be changed.

[0016] With this configuration, the rotating portion can be adjusted to operate appropriately according to the installation location, required requirements, and the like, using the same component configuration.

[0017] Furthermore, the luggage shelf of the sixth invention is a luggage shelf comprising multiple tiers of shelves arranged one above the other, and the above-mentioned luggage fall prevention device arranged on each shelf except for the lowest shelf.

[0018] With this configuration, it is possible, with a simple structure, to restrict the movement of the cargo stored in the storage section toward the front, and to prevent the cargo from falling from the upper level even in the event of an earthquake or the like.

[0019] The seventh invention is a luggage shelf according to the sixth invention, wherein the luggage is a wheelchair, the multiple shelves are arranged so that a wheelchair can be stored in a storage section above the shelves with the contact surfaces of the wheelchair's wheels touching each shelf, and the height dimension from the top surface of each shelf to the regulating section of each luggage fall prevention device in the regulating state is greater than or equal to approximately 11 inches and less than approximately 22 inches.

[0020] With this simple configuration, it is possible to reliably restrict the movement of the wheelchair stored in the storage section toward the front, and to prevent the stored wheelchair from falling from the upper level even in the event of an earthquake or the like. Effect of the Invention

[0021] According to the luggage fall prevention device of the present invention, the luggage shelf can be configured with a simple structure to restrict the movement of luggage stored in the storage section toward the front, while allowing the luggage to be easily removed when necessary. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a perspective view showing a luggage shelf using a luggage fall prevention device according to one embodiment of the present invention; [Diagram 2] A side view of the luggage shelf [Diagram 3] An exploded perspective view of the load drop prevention device. [Figure 4] FIG. [Diagram 5] FIG. 4 is a side view showing the luggage shelf in the removed state. [Figure 6] FIG. 13 is a perspective view showing the loaded luggage fall prevention device in a removed state. [Figure 7] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of a cargo fall prevention device and the like will be described with reference to the drawings. Note that, in the embodiments, components with the same reference numerals perform the same operations, so that repeated description may be omitted.

[0024] In the following description, the coordinates shown in the drawings are common to all the drawings. The Z direction of the coordinates is a direction perpendicular to the horizontal plane. The Y direction is a direction perpendicular to the Z direction and approximately parallel to the rotation axis of the rotating part. The X direction is a direction perpendicular to the Z direction and perpendicular to the Y direction. The Z direction is sometimes referred to as the up-down direction (the direction that is positive on the Z axis when viewed from the origin is the up direction), the X direction is sometimes referred to as the front-rear direction (the direction that is positive on the X axis when viewed from the origin is the front or near direction), and the Y direction is sometimes referred to as the left-right direction (the direction that is positive on the Y axis when viewed from the origin is the left direction) or the width direction. In the following, the shapes and positional relationships of each part may be described by indicating each direction in this way, but these are defined only for the convenience of explanation and do not limit the orientation or posture when using the luggage drop prevention device and the like according to the present invention. In addition, expressions indicating directions and expressions indicating states such as horizontal, vertical, and orthogonal only indicate that they can be roughly understood as such, and do not necessarily have to be interpreted strictly as those expressions.

[0025] (Embodiment)

[0026] An outline of one embodiment of the present invention is as follows. The luggage fall prevention device is used together with a luggage shelf having a shelf. The luggage fall prevention device is configured such that, when almost no external force is acting, a restriction part provided on a rotating part is in a restricted state capable of restricting movement of luggage towards the front side. When the rotating part rotates relative to the shelf, the restriction part is displaced downward, and the device is in a removal state in which the restriction on the luggage is released.

[0027] In the removed state, a suction force may be applied between a part of the rotating part and the shelf or the support part. A weight may be attached to the rotating part, and the behavior of the rotating part, such as the attitude and the rotation speed, may be adjusted appropriately depending on the presence or absence and the magnitude of an external force. The position of the weight may be adjustable on the arm part of the rotating part, so that the behavior of the rotating part can be easily adjusted.

[0028] An example of the configuration of a luggage shelf using a luggage fall prevention device configured in this way will be described below.

[0029] Fig. 1 is a perspective view showing a luggage shelf 100 using a luggage fall prevention device 1 according to one embodiment of the present invention. Fig. 2 is a side view of the luggage shelf 100.

[0030] In each figure, luggage 80 is indicated by a two-dot chain line. Also, in Fig. 2, a user of the luggage rack 100 is indicated by a two-dot chain line.

[0031] The luggage shelf 100 has a shelf board 90. The upper part of the shelf board 90 is a storage section 97 capable of storing luggage 80. The luggage shelf 100 has multiple tiers of shelf boards 90 arranged one above the other. In this embodiment, the luggage shelf 100 has two tiers of shelf boards 90. The number of tiers of shelf boards 90 may be three or more.

[0032] It should be noted that the shelf 90 here refers to a portion of the luggage rack 100 on which luggage can be placed. The shelf 90 is not necessarily limited to a plate-shaped portion. Also, the floor 900 of the facility on which the luggage rack 100 is placed may be interpreted as the shelf 90. In other words, the portion below each of the multiple storage sections 97 of the luggage rack 100 that can support the luggage 80 stored in each storage section 97 in the up-down direction can be called the shelf 90.

[0033] In this embodiment, the shelf board 90 is, for example, a board having a substantially horizontal rectangular upper surface. Each shelf board 90 is supported by a support portion 10 constituting the luggage fall prevention device 1 as described later. In the following description, the upper shelf board 90 and its storage portion 97 may be referred to as the upper shelf board 90b and storage portion 97b. The lower shelf board 90 and its storage portion 97 may be referred to as the lower shelf board 90c and storage portion 97c. In this embodiment, the lower shelf board 90c is a structure supported by the support portion 10 like the shelf board 90b, but instead, the floor 900 on which the support portion 10 is arranged may simply be understood as the shelf board 90c.

[0034] The luggage 80 is, for example, a wheelchair, as in the example described later. In this embodiment, the luggage 80 can be accommodated in each of the upper and lower storage sections 97, but this is not limited to the above. For example, the luggage 80 that is a wheelchair may be accommodated only in the upper section, and only other luggage 80 that is low in height may be accommodated in the lower section.

[0035] In this embodiment, the luggage shelf 100 has a luggage fall prevention device 1 that can restrict the movement of luggage 80 stored in a storage section 97 toward the front side, thereby preventing the luggage 80 from falling off the luggage shelf 100. Note that the entire luggage shelf 100, including the shelf board 90 and other components, may be understood as the luggage fall prevention device 1.

[0036] In this embodiment, the luggage fall prevention device 1 is arranged on the upper shelf 90b so as to be able to restrict the movement of the luggage 80 accommodated in the accommodation section 97b toward the front side. The luggage fall prevention device 1 is not provided on the lower shelf 90c because the possibility of a serious accident occurring even if the luggage 80 moves is low. That is, in this embodiment, the luggage fall prevention device 1 is provided on the shelf 90b above the lowest shelf 90c except for the shelf 90c. For example, when there are three or more shelves 90, the luggage fall prevention device 1 can be arranged on each shelf 90 above the lowest shelf 90 so as to be able to restrict the movement of the luggage 80. Note that the luggage fall prevention device 1 may also be arranged on the lowest shelf 90c so as to be able to restrict the movement of the luggage 80.

[0037] The cargo fall prevention device 1 includes a support part 10, a pivot support part 20, and a rotating part 30.

[0038] FIG. 3 is an exploded perspective view of the luggage drop prevention device 1. As shown in FIG.

[0039] 3, the upper shelf board 90 is shown together with the support part 10. The pivot support part 20 and the rotating part 30 are shown in a state in which the following components are assembled.

[0040] The support portion 10 is a portion that is provided so as to be immovable relative to the shelf board 90. In this embodiment, the support portion 10 includes a pillar 11 and a support frame 12.

[0041] The pillars 11 are provided, for example, at the front end of the shelf board 90, near both the left and right sides. The shelf board 90 is fixed to the pillars 11 and is supported by the pillars 11. The number of pillars 11 is not limited to these two, and the pillars 11 may be provided in other locations. Furthermore, the position of the pillars 11 is not limited to this.

[0042] The support frame 12 is a portion that supports the pivot portion 20. The support frame 12 is fixed to the column 11. That is, the support frame 12 is arranged so as to be immovable relative to the shelf board 90. The support frame 12 may also be fixed directly to the shelf board 90.

[0043] In this embodiment, specifically, the support frame 12 is supported on the pillar 11 by the following frame mounting structure. That is, the support frame 12 is, for example, a general-purpose grooved aluminum frame (which may be called an aluminum structural material) configured so that nuts and bolts can be fastened at any position. The support frame 12 is fastened to the pillar 11 at its front end so as to extend approximately parallel in the front-rear direction. The pillar 11 is provided with a plurality of holes in the height direction into which bolts for fixing the support frame 12 can be fixed, and the height of the support frame 12 can be appropriately selected.

[0044] Note that a frame or other support member for supporting the shelf board 90 may be used in addition to or instead of the pillar 11. For example, a plate-shaped wall portion may be provided so as to support the shelf board 90. In this case, the frame or support member may be configured to support the support frame 12 or to support the pivot support portion 20.

[0045] The configuration of such support part 10 may be described as follows, assuming that support part 10 does not include pillar 11. That is, support part 10 is fixed to pillar 11 that functions as a frame of luggage shelf 100, and is immovable relative to shelf board 90. Support part 10 may also be attached immovably to, for example, floor 900 on which luggage shelf 100 is installed or a wall nearby.

[0046] The shaft support unit 20 serves as a rotation shaft of the rotating unit 30. In this embodiment, the shaft support unit 20 has a right rotation shaft 21 attached to the support frame 12 on the right side, and a left rotation shaft 22 attached to the support frame 12 on the left side.

[0047] In this embodiment, the rotating shafts 21, 22 are rotatably supported by, for example, bearings (not shown) fixed to the support frames 12. The rotating shafts 21, 22 are parallel to the left-right direction and are coaxial with each other. This allows the rotating unit 30 to rotate via the shaft support unit 20. In other words, the rotating unit 30 is rotatable with respect to the support unit 10 about a rotation axis that is parallel to the width direction and approximately horizontal.

[0048] The support unit 20 may be considered to be composed of the rotating shafts 21, 22 and bearings that hold them. At least one of the left and right sides may have a bearing provided on the rotating unit 30 side and the rotating shafts 21, 22 fixed on the support frame 12 side. The structure of the support unit 20 is not limited to this. The bearings and the rotating shafts 21, 22 may be attached so that their positions can be changed relative to the member to which they are attached, or may be fixed by welding, adhesion, or the like so that their positions cannot be easily changed. For example, the bearings and the rotating shafts 21, 22 may be formed on the arm parts 31, 32 themselves of the rotating unit 30 described later or on the support frame 12 itself. The bearings may be holes provided on the arm parts 31, 32 themselves or the support frame 12 itself.

[0049] The rotating portion 30 includes arm portions 31, 32 (a right arm portion 31 and a left arm portion 32), a restricting portion 34, an attraction member 35, and a weight 38.

[0050] As described above, the rotating part 30 is rotatably attached to the support part 10. That is, the rotating part 30 is rotatable with respect to the shelf board 90b.

[0051] The arm portions 31 and 32 are rotatably attached to the support portion 10. In this embodiment, each of the arm portions 31 and 32 is a beam-shaped member pivotally supported by the pivot portion 20 at a middle portion between the front and rear end vicinity portions. Each of the arm portions 31 and 32 is a member extending in a substantially straight line. The right arm portion 31 is attached to the right support frame 12 via a right rotation shaft 21. The left arm portion 32 is attached to the left support frame 12 via a left rotation shaft 22. The right arm portion 31 and the left arm portion 32 are configured to have a substantially symmetrical positional relationship.

[0052] The restricting portion 34 is provided on the front side of the arm portions 31, 32 so as to be located on the front side of the storage portion 97. In this embodiment, the restricting portion 34 is a rod-shaped member that is approximately parallel to the width direction. A portion near the right end of the restricting portion 34 is fixed to the front end of the right arm portion 31, and a portion near the left end of the restricting portion 34 is fixed to the front end of the left arm portion 32. The restricting portion 34 is attached to the lower side of each of the arm portions 31, 32. That is, the restricting portion 34 is located on the lower side around the rotation shafts 21, 22 at the front end of the rotating portion 31.

[0053] When the rotating part 30 rotates relative to the support part 10, the restricting part 34 is displaced around the rotating shafts 21 and 22, and is thus vertically displaceable.

[0054] In this embodiment, the arm portions 31, 32 and the restricting portion 34 can be specifically constructed as follows. That is, the arm portions 31, 32 and the restricting portion 34 are general-purpose grooved aluminum frames (which may be called aluminum structural materials). The arm portions 31, 32 are roughly arranged substantially parallel to a plane perpendicular to the width direction so that the front-rear direction is the longitudinal direction. The restricting portion 34 is attached to the lower side surface of each of the arm portions 31, 32 via a fastener (not shown). Since the arm portions 31, 32 are constructed using such an aluminum frame, the cost of the cargo fall prevention device 1 can be reduced.

[0055] The weight 38 is attached to the arm portion 31 at a position on the rear side of the rotation shafts 21 and 22 .

[0056] FIG. 4 is a perspective view showing the weight 38. As shown in FIG.

[0057] As shown in the figure, in this embodiment, the weight 38 is, for example, a rectangular parallelepiped metal block. The weight 38 is attached to the arm parts 31, 32 so that the distance between the position where the weight 38 is attached to the arm parts 31, 32 and the rotation shafts 21, 22 can be changed. That is, the weight 38 is fixed to the side of the arm parts 31, 32 by, for example, a nut (not shown) disposed in a groove of the arm parts 31, 32 and a bolt screwed into the nut. The user can slide the weight 38 along the groove of the arm parts 31, 32 by weakening the fastening force of the bolt, and easily re-fix the weight 38 to the arm parts 31, 32 at the position after sliding.

[0058] When the external force acting on the rotating part 30 (meaning a force other than gravity) is small, the rotating part 30 is arranged to assume a posture in which the rear side on which the weight 38 is provided is positioned downward, i.e., the restricting part 34 is positioned upward, due to gravity. This is achieved by setting the position and weight of the weight 38 and the position of the pivot support part 20 according to the weight balance of each member, etc. In the following explanation, this state may be referred to as the natural state. The natural state may be said to be a state in which mainly only gravity acts on the rotating part 30.

[0059] In this embodiment, a state in which an external force (meaning a force other than gravity) acting on the rotating unit 30 is small may be referred to as a natural state. The natural state may be said to be a state in which only gravity mainly acts on the rotating unit 30.

[0060] In the natural state, the rotating part 30 is in a predetermined position relative to the support part 10, i.e., in a predetermined position relative to the shelf board 90 and is stationary. That is, in the natural state, the rotating part 30 is stationary with the rear ends of the arm parts 31 and 32 in contact with the upper surface of the shelf board 90. However, this is not limited to this, and a positioning structure that regulates the position of the rotating part 30 by contacting the rotating part 30 may be provided between the support part 10 and the rotating part 30.

[0061] In this embodiment, the rotating unit 30 is configured to be switchable between two states: a restricted state in which movement of the load 80 toward the near side can be restricted, and a removal state in which the restriction is released. That is, in the load drop prevention device 1, the restricted state and the removal state can be switched between each other.

[0062] The restricted state is a state in which the restricting portion 34 is located at the same position as a part of the load 80 stored in the storage portion 97 in the vertical direction, thereby being able to restrict the movement of the load 80 toward the front. In other words, the restricted state can be defined as a state in which the restricting portion 34 is located in front of the load 80 stored in the storage portion 97 at a height away from the shelf 90.

[0063] The removed state is a state in which the restriction portion 34 is positioned higher or lower than in the restricted state, and thus the restriction on the movement of the load 80 toward the front side is released.

[0064] Fig. 5 is a side view showing the removed state of the luggage shelf 100. Fig. 6 is a perspective view showing the removed state of the luggage drop prevention device 1.

[0065] 5, the posture of the rotating part 30 in the restricted state is indicated by a two-dot chain line. As shown in the figure, in this embodiment, the restricting part 34 is located lower than in the restricted state, and the state in which the restricting part 34 is lowered to the vicinity of the shelf board 90 is the removed state. That is, in the removed state, the lower end of the rotating part 30 is configured to be located near the upper surface of the shelf board 90.

[0066] In the restricted state, the restricting portion 34 is located at a certain height in front of the load 80, so that the forward displacement of the load 80 is restricted. On the other hand, in the removal state, the restricting portion 34 is close to the shelf board 90, so that the load 80 on the shelf board 90 can easily climb over the restricting portion 34. In other words, the state in which the forward displacement of the load 80 is restricted is released.

[0067] By switching between the restricted state and the removed state in this way, the rotating unit 30 can switch between a state in which the load 80 does not easily move forward (a state in which forward movement is restricted) and a state in which the load 80 can relatively easily move forward (a state in which the restriction is released). Note that in the removed state, the front of the storage unit 97 is not blocked by the restricting unit 34 as in the restricted state, and the front of the storage unit 97 is open. Therefore, when storing the load 80 in the storage unit 97, the load 80 can be easily stored in the storage unit 97 by switching to the removed state.

[0068] In this embodiment, the rotating part 30 is configured to maintain the restricted state by gravity in a natural state. As a result, the cargo fall prevention device 1 maintains the restricted state, particularly when no force is applied from the user to push down the restricting part 34.

[0069] Here, in the present embodiment, the cargo drop prevention device 1 has a suction structure 50. The suction structure 50 is configured so that a suction force acts between the lower end of the rotating part 30 and the shelf board 90 in the removed state.

[0070] The attraction structure 50 is composed of, for example, an attraction member 35 provided at the lower end of the rotating part 30, and a magnet 51 arranged on the shelf board 90 side.

[0071] FIG. 7 is a perspective view showing the attachment portion of the adsorption member 35. As shown in FIG.

[0072] The attraction member 35 is, for example, a member made of a ferromagnetic material. More specifically, as shown in the figure, the attraction member 35 is, for example, an iron bolt. The material of the attraction member 35 is not limited to iron, and may not be a bolt. The attraction member 35 is, for example, screwed and fixed to the rotating part 30. More specifically, the attraction member 35 is fixed to the regulating part 34 at the vicinity of both the left and right ends. The attraction member 35 is, for example, fastened to a nut (not shown) fitted into a groove of an aluminum frame constituting the regulating part 34, and fixed to the regulating part 34. The position and mounting structure of the attraction member 35 are not limited to this, and the attraction member 35 may be fixed by adhesion or the like, or joined by welding or the like.

[0073] The magnet 51 is disposed, for example, on the upper surface of the shelf board 90 at a corresponding portion adjacent to the attraction member 31 in the removed state. The magnet 51 may be disposed on the upper surface of the shelf board 90, or may be embedded inside the shelf board 90.

[0074] In the thus configured attraction structure 50, when the attraction member 31 approaches the magnet 51 in the removed state, a magnetic attraction force is generated between them. This attraction force allows the attitude of the rotating unit 30 to maintain the removed state even when, for example, a force is not continuously applied by a user or the like in the removed state. Note that the magnitude of the magnetic attraction force is preferably set so that when a force is applied to the rotating unit 30 in the removed state, the rotating unit 30 easily returns to the restricted state against the magnetic attraction force.

[0075] The configuration of the attraction structure 50 is not limited to this. For example, the attraction structure 50 may be configured between the magnetic attraction member 35 attached to the rotating part 30 and a shelf board 90 having a ferromagnetic material (e.g., iron) at least near a corresponding portion on the upper surface.

[0076] The attraction structure 50 may be composed of a part of the rotating part 30 and a means for attracting the rotating part 30 arranged on the support part 10. For example, a magnet and a ferromagnetic body may be arranged on the arm parts 31, 32 or other both sides of the rotating part 30 and the column 11 at positions close to each other in the removed state so as to generate a magnetic attraction force.

[0077] As described above, in this embodiment, by switching between the restricted state and the removed state of the rotating unit 30, a state in which the load 80 does not easily move forward (a state in which forward movement is restricted) and a state in which the load 80 can relatively easily move forward (a state in which the restriction is released) can be switched. Note that in the removed state, the front of the storage unit 97 is not blocked by the restricting unit 34 as in the restricted state, and the front of the storage unit 97 is open. Therefore, when storing the load 80 in the storage unit 97, the load 80 can be easily stored in the storage unit 97 by switching to the removed state.

[0078] A weight 38 is attached to the rotating part 30, and the behavior of the rotating part 30, such as its posture and rotation speed, can be adjusted appropriately depending on the presence and magnitude of an external force. In addition, the position of the weight 38 can be adjusted on the arm part 31 of the rotating part 30, so the behavior of the rotating part 30 can be easily adjusted.

[0079] The rotating unit 30 is adapted to maintain the restricted state by gravity, particularly when no force is applied from the user to push down the restricting unit 34. Since the restricted state is constantly maintained by the luggage fall prevention device 1 in this way, even if vibrations are applied to the luggage shelf 100 or the luggage 80 stored therein due to an earthquake or other reasons, the forward movement of the luggage 80 can be more reliably restricted, and the luggage 80 can be reliably prevented from falling from the shelf board 90. When removing or storing the luggage 80, the user can apply force to rotate the rotating unit 30 to easily place the luggage 80 in the removed state.

[0080] Such a cargo fall prevention device 1 is useful, in particular when storing cargo 80 that has wheels and is prone to rolling when vibrated, since it can prevent the cargo 80 from falling.

[0081] For example, the luggage drop prevention device 1 can be used when a wheelchair is stored as luggage 80 in the luggage rack 100. In this case, as shown in FIG. 1 and FIG. 2, the luggage 80 can be stored in the storage section 90 with the grounding surfaces of the wheels 83 of the luggage 80 touching each shelf 90. In other words, the vertical dimension of the lower storage section 97c, i.e., the distance between the lower shelf 90c and the upper shelf 90b, is set to a dimension sufficient to store a wheelchair, for example, about 1 meter. The vertical dimension of the upper storage section 97b, i.e., the distance from the upper shelf 90b to an object above, is also set to a dimension sufficient to store a wheelchair. In addition, the depth dimension of the storage sections 97b, 97c, i.e., the depth dimension of the shelf 90, is set to a dimension sufficient to store a wheelchair, for example, 1.1 meters. The width dimension of the storage sections 97b, 97c, i.e., the depth dimension of the shelf 90, is set to, for example, 2.4 meters, but can be changed appropriately depending on the number of wheelchairs that can be stored. The wheelchairs that are the cargo 80 are push-type wheelchairs, but they may also be electric wheelchairs or the like. The wheelchairs may be folded, for example, so that the width dimension is small, and stored in a stored state with the push handle folded up.

[0082] When the load 80 is a wheelchair, the height dimension from the upper surface of the shelf board 90b to the restricting portion 34 in the restricted state is preferably about 11 inches or more and less than about 22 inches. In other words, it is preferably about 0.28 meters or more and less than about 0.55 meters. Specifically, it can be set to about 0.45 meters, for example. In other words, the position of the restricting portion 34 in the restricted state is preferably set to be above the axle of the wheel 83 of the wheelchair to be accommodated and below the upper end of the ground contact surface of the wheel 83 in the vertical direction. By setting the height of the restricting portion 34 in this way, when the load 80 is displaced forward, the restricting portion 34 abuts on the ground contact surface of the wheel 83, and the displacement of the load 80 is restricted. In this case, the wheel 83 does not go over the restricting portion 34, so that the load 80 can be more reliably prevented from falling. The position of the restricting portion 34 in the restricted state may be above the upper end of the ground contact surface of the wheel 83 in the vertical direction. Even in this case, the movement of the wheelchair can be restricted by the restricting portion 34 being able to come into contact with the frame of the wheelchair or the like.

[0083] (others)

[0084] The present invention is not limited to the above-described embodiment, and various modifications are possible, which are also included within the scope of the present invention.

[0085] The components of the above-described embodiment and modified examples may be appropriately combined to form an embodiment. Some of the components or functions of the above-described embodiment and modified examples may be omitted.

[0086] In the above description, the restricting portion is configured to be displaced downward from the restricted state to the removed state, but the restricting portion may be configured to be displaced upward to the removed state. Even in this case, by adjusting the position and weight of the weight, for example, it is possible to push the restricting portion upward with a relatively small force, or to make the rotating portion rotate slowly at an appropriate speed when returning from the removed state to the restricted state, so that the user can use it comfortably. In this case, a magnet or the like may be provided on the upper shelf of the storage portion or on another structure on the upper side to realize an attraction structure.

[0087] In the above description, the rotating unit 30 supports the regulating unit with two arm portions, one on the left and one on the right, but the regulating unit may be supported by one arm portion. Also, the shape of the arm portion may be a plate-like shape, etc., instead of a beam-like shape. Also, the regulating unit may not be a rod-like shape. Regulating units of various shapes can be used that are positioned in front of the storage unit in the regulated state, thereby being able to regulate the displacement of the load in the storage unit. [Industrial Applicability]

[0088] As described above, the luggage fall prevention device of the present invention has a simple structure, and has the effect of restricting the movement of luggage stored in the storage section toward the front and making it easy to remove the luggage when necessary, and is useful as a luggage fall prevention device, etc. [Explanation of symbols]

[0089] 1. Cargo fall prevention device 10 Support part 11 Pillars 12 Support frame 13 Frame mounting structure 20 axis branches 21 Right rotation axis 22 Left rotation axis 30 Rotating section 31 Right arm 32 Left arm 34 Regulatory Department 35 Adsorption material 38 Weight 50 suction structure 51 Magnet 80 Cargo 81 Frames 83 Wheels 90 Shelf 97 Storage unit 100 Luggage Shelves

Claims

1. A luggage fall prevention device used together with a luggage shelf having a shelf, A support portion that is immovably provided with respect to the shelf board; a rotating part that is rotatable about a rotation axis that is parallel to the width direction and substantially horizontal with respect to the support part, The rotating part is an arm portion rotatably attached to the support portion; a restricting portion provided on the front side of the arm portion so as to be located on the front side of the storage portion above the shelf board, and capable of being displaced up and down as the rotating portion rotates relative to the support portion; This cargo fall prevention device is configured so that the rotation section can be converted between a restricted state in which the restricting section is located at the same position in the vertical direction as a portion of the cargo stored in the storage section, thereby restricting the movement of the cargo toward the front, and a removal state in which the restricting section is located higher or lower than the restricted state, thereby releasing the restriction on the movement of the cargo toward the front.

2. In the removed state, a lower end of the rotating part is configured to be located near an upper surface of the shelf board, The cargo drop prevention device according to claim 1 , further comprising a suction structure configured to apply a suction force between a part of the rotating portion and the shelf plate or the support portion in the removed state.

3. The cargo fall prevention device according to claim 1 , wherein the rotating portion is configured to maintain the restricted state by gravity when an external force acting thereon is small.

4. The cargo drop prevention device according to claim 1 , wherein the rotating portion has a weight attached to the arm portion at a position on the rear side of the rotating shaft.

5. 5. The cargo drop prevention device according to claim 4, wherein the weight is attached to the arm portion such that a distance between a position where the weight is attached to the arm portion and the rotation shaft is variable.

6. Multiple shelves arranged one above the other, A luggage shelf comprising: a luggage fall prevention device according to any one of claims 1 to 5, which is arranged on each shelf except for the lowest shelf.

7. The load is a wheelchair, The plurality of shelves are provided so that the wheelchair can be accommodated in an accommodation section above the shelves with the ground contact surfaces of the wheels of the wheelchair in contact with each shelf, 7. The luggage shelf according to claim 6, wherein a height dimension from an upper surface of each shelf plate to the regulating portion of each of the luggage fall prevention devices in the regulating state is equal to or greater than about 11 inches and smaller than about 22 inches.

Images