Seedling box housing shelf

Abstract

To provide a seedling box housing shelf in which a shelf unit and upper and lower cross rails are freely assembled and disassembled, in which the shelf unit also has a freely assembled and disassembled constitution.SOLUTION: A support rod (5) and a shelf member (4) in a shelf unit (1) are freely detachably fastened by screwing down a single mounting bolt (13) inserted from outside the support rod (5) to an end part (4c) of the shelf member, rotation preventing means (14) are provided mutually for the end part (4c) of the shelf member and inside the support rod (5), the rotation preventing means (14) is constituted by bringing a first abutting surface (23) provided inside the support rod (5) and a second abutting surface (24) provided for the end part (4c) of the shelf member in surface contact with each other, the first abutting surface (23) and the second abutting surface (24) are formed of a tapered surface inclined to an axis line of the mounting bolt (13), and are constituted so as to prevent the shelf plate member (4) from rotating about the axis of the mounting bolt (13).SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a seedling box storage shelf for storing a large number of seedling boxes. [Background technology]

[0002] For example, when planting rice seedlings or other seedlings, a seedling box storage shelf is provided that can be loaded onto the bed of a light truck or the like with a large number of seedling boxes stored therein and transported to a field.

[0003] In general, such seedling box storage shelves are constructed by erecting a number of shelf members arranged side by side at intervals in the vertical direction between a pair of supports to form a shelf unit, and the shelf units are arranged in a row to form storage spaces between them, with the upper and lower ends of the supports connected by upper and lower cross bars, respectively. Thus, when the seedling boxes are inserted into the storage spaces, both ends are supported by the shelf members, making it possible to store a large number of seedling boxes in multiple tiers with vertical intervals between them.

[0004] By the way, since seedling box storage shelves are bulky when stored and not in use, it is preferable that they are constructed so as to be easily assembled and disassembled.

[0005] For this reason, the posts and upper and lower horizontal bars that make up the shelf units are detachably connected, so that when not in use, the shelf units can be disassembled so that the two upper horizontal bars and the two lower horizontal bars can be separated.

[0006] When in use, a plurality of shelf units are arranged in a row and assembled into a framework by connecting the upper and lower horizontal rails to the upper and lower ends of the posts, respectively. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2017-79604 A [Patent Document 2] JP 2013-94070 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the case of the conventional technology, the shelf unit itself is not configured to be freely assembled and disassembled. In other words, the shelf members and the posts that constitute the shelf unit are always fixed to each other and are not configured to be disassembled.

[0009] In this regard, the shelf unit has multiple shelf members installed between a pair of posts, and the larger the seedling box storage shelf, the more shelf members are attached to the longer posts. Therefore, even if the upper and lower cross bars are removed, the shelf unit itself is bulky and requires a large storage space. Moreover, there is a risk that the bulky shelf unit will collide with foreign objects and damage the shelf members when it is carried.

[0010] It is believed that the above problem can be solved by constructing the shelf unit so that it can be easily assembled and disassembled, that is, by constructing the shelf members so that they can be easily attached and detached from the supports. However, in that case, new problems that need to be solved are presented, as follows.

[0011] That is, since the shelf members support both ends of the seedling boxes from below when the seedling box storage rack is in use, they must be firmly fixed to the supports. In other words, they must not tilt or change position when subjected to the weight of the seedling boxes.

[0012] For this reason, for example, when making a shelf component removable by inserting a bolt from the outside of the support and screwing it into the end of the shelf component, multiple bolts are used because a single bolt would make the shelf component prone to rotating around the axis of the bolt after installation.

[0013] However, when a plurality of bolts are used to attach the ends of the shelf members to the posts, the assembly and disassembly procedures are complicated, making it difficult to complete the work in a short period of time.

[0014] An object of the present invention is to provide a seedling tray storage shelf which solves the above problems. [Means for solving the problem]

[0015] The present invention provides a seedling box storage shelf in which a shelf unit is formed by erecting a plurality of shelf members arranged in a row with a vertical gap between them between a pair of supports, and the upper and lower ends of the supports are detachably connected by upper and lower cross bars, respectively, in a state where the plurality of shelf units are arranged in a row to form storage spaces between them, and both ends of seedling boxes to be loaded into the storage spaces are supported by the shelf members, and the support and shelf member that constitute the shelf unit are secured by a single mounting bolt inserted from the outside of the support. The shelf member is removably fixed by screwing it onto the end of the shelf member, and anti-rotation means is provided on the end of the shelf member and the inside of the support, and the anti-rotation means is formed by bringing a first abutment surface on the inside of the support and a second abutment surface on the end of the shelf member into surface contact with each other, and the first and second abutment surfaces are formed by tapered surfaces inclined with respect to the axis of the mounting bolt on both sides of the mounting bolt, and are configured to prevent the shelf member from rotating around the axis of the mounting bolt.

[0016] In a preferred embodiment of the present invention, the shelf member comprises a hollow bone portion mounted between a pair of supports and wing portions extending from the bone portion to support the ends of the seedling trays, and a mounting bracket with a screw hole is fixed to the end of the bone portion, and the inside of the support forms ribs positioned on both sides of an insertion hole through which the shank of a headed mounting bolt is inserted and provided with the first abutment surface, and the mounting bracket comprises a fixing portion inserted and fixed into the end of the bone portion and a mounting portion arranged outside the end of the bone portion, and the mounting portion is provided with the screw hole and the second abutment surface is formed on ear portions extending on both sides of the screw hole. Effect of the Invention

[0017] According to the present invention, in a seedling box storage shelf in which the shelf unit 1 and the upper and lower cross bars 2, 3 can be freely assembled and disassembled, the support posts 5 and shelf members 4 of the shelf unit 1 are also freely assembled and disassembled, so that the shelf unit 1 can be stored in a compact state when not in use.

[0018] In this case, the shelf unit 1 is configured such that the shelf member 4 is detachably attached to the support 5 by a single mounting bolt 13, so that assembly and disassembly can be performed simply and easily.

[0019] In the installed state, the support 5 and the bone portion 4a of the shelf member 4 form an anti-rotation means 14 by a first abutment surface 23 and a second abutment surface 24 with tapered surfaces, thereby preventing the shelf member 4 from rotating around the axis of the mounting bolt 13, and providing a shelf unit 1 that can suitably support seedling boxes. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a perspective view showing the assembled state of the seedling box storage shelf according to the embodiment of the present invention. [Diagram 2] FIG. 2 is an oblique view showing a seedling box storage shelf according to an embodiment of the present invention with the shelf unit and the upper and lower cross bars disassembled. [Diagram 3] 1 is a perspective view showing an upper horizontal bar, a lower horizontal bar, an intermediate connecting fitting, and an end connecting fitting in an exploded state. FIG. [Figure 4] 13 is a perspective view showing the upper horizontal bar, the intermediate connecting fitting, and the end connecting fitting in a disassembled state. FIG. [Diagram 5] 13 is a perspective view showing a lower horizontal bar, an intermediate connecting fitting, and an end connecting fitting in a disassembled state. FIG. [Figure 6] 13 is a perspective view showing the shelf unit in an exploded state, and intermediate connecting fittings and end connecting fittings attached to the upper and lower cross bars. FIG. [Figure 7] FIG. 2 is a perspective view showing the shelf unit with the posts and shelf members assembled together; [Figure 8] FIG. 2 is a perspective view showing the shelf unit with the posts and shelf members disassembled. [Figure 9] Regarding the mounting bracket, (A) is a perspective view showing the relationship between the shelf member and the mounting bracket, (B) is a perspective view of the mounting bracket, and (C) is a cross-sectional view of the mounting bracket. [Figure 10] 1 is a perspective view showing a shelf member having mounting brackets fixed to both ends and a pair of posts. [Figure 11] 1 is a cross-sectional view showing an embodiment of a rotation prevention means, in which a mounting bracket, a support post, and a mounting bolt fixed to a shelf member are separated. [Figure 12] 11 is a cross-sectional view showing an embodiment of the anti-rotation means, in which a mounting bracket fixed to a shelf member is connected to a support post by a mounting bolt. [Figure 13] 13 is a cross-sectional view showing the function of the anti-rotation means when the mounting bracket is fixed to the support by a mounting bolt. FIG. [Figure 14] 13 is a perspective view showing the function of the anti-rotation means when the mounting bracket is fixed to the support by the mounting bolt. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0022] (Overall composition) Fig. 1 shows an assembled seedling box storage shelf according to an embodiment of the present invention. The seedling box storage shelf is composed of a shelf unit 1 and a plurality of shelf units 1A, 1B arranged in a row with storage spaces S formed between them and connected by upper cross bars 2 and lower cross bars 3.

[0023] The multiple shelf units 1 are composed of a middle shelf unit 1A and end shelf units 1B, 1B arranged on both sides of it (hereinafter, when there is no need to distinguish between the middle shelf unit 1A and the end shelf unit 1B, they may be simply referred to as "shelf unit 1").

[0024] The shelf unit 1 is constructed by bridging a plurality of shelf members 4 arranged side by side at intervals in the vertical direction between a pair of posts 5, 5.

[0025] The shelf member 4 is extruded from a metal such as aluminum, and has a hollow bone portion 4a with a rectangular cross-section that is installed between the supports 5, 5, and a wing portion 4b that extends along the bone portion.

[0026] As shown in Figures 6 and 7, the shelf member 4 constituting the shelf unit 1A for the middle section has wing portions 4b, 4b formed on both sides of the frame portion 4a so as to face the storage space S on both sides of the unit, while the shelf member 4 constituting the shelf unit 1B for the end section has wing portions 4b formed only on one side of the frame portion 4a facing the storage space S.

[0027] As a result, although not shown in the figure, when the seedling tray is loaded into the storage space S, both ends are supported with the wing portions 4b of the shelf member 4 in the middle shelf unit 1A and the wing portions 4b of the shelf member 4 in the end shelf unit 1B.

[0028] The seedling boxes can be stored in multiple tiers in the storage space S according to the number of shelf members 4 arranged side by side in the vertical direction. In this case, as shown in the figure, it is preferable to provide a fall prevention rod 6 that runs vertically through the side opening of the storage space S when the seedling boxes are stored.

[0029] (Connection structure between upper and lower cross bars and shelf unit) The upper horizontal bars 2 and lower horizontal bars 3 which connect the shelf units 1 arranged in a row across the storage space S are provided in pairs each so that they can be attached to the upper and lower ends of a pair of supports 5, 5 in the shelf units 1A, 1B via connecting fittings 7, with a middle connecting fitting 7A which can be detachably attached to the support 5 in the middle shelf unit 1A being provided in the middle in the longitudinal direction, and end connecting fittings 7B which can be detachably attached to the support 5 in the end shelf unit 1B being provided at both longitudinal ends (hereinafter, when there is no need to distinguish between the middle connecting fitting 7A and the end connecting fitting 7B, they may be simply referred to as "connecting fittings 7").

[0030] 2 shows the seedling tray storage shelf disassembled into shelf unit 1, upper cross bar 2, and lower cross bar 3. As shown in the figure, connecting fittings 7 are fixed to upper cross bar 2 and lower cross bar 3, and are configured so that the upper and lower ends of the supports 5 can be inserted and removed.

[0031] 3 to 5, the connecting fitting 7 is composed of split fittings 8, 8 split into halves, and includes a fastening portion 8a that clamps the cross rail 2 (3) when the split fittings 8, 8 are joined together, and a semi-cylindrical portion 8b for forming a socket 9 with a rectangular cross section into which the end of the support 5 can be freely inserted. As shown in the figures, the connecting fitting 7A for the middle portion has the fastening portion 8a and semi-cylindrical portion 8b formed in a roughly T shape, and the connecting fitting 7B for the end portion has the fastening portion 8a and semi-cylindrical portion 8b formed in a roughly L shape.

[0032] As shown in Figures 4 and 5, the connecting fitting 7 is fixed by a through bolt 10a and a nut 10b with the upper horizontal rail 2 and the lower horizontal rail 3 sandwiched between fastening portions 8a, 8a. As a result, as shown in Figure 6, a socket 9 is formed in the connecting fitting 7 into which the end of the strut 5 is removably inserted. Then, with the end of the strut 5 inserted into the socket 9, it is fixed by a through bolt 11a and a nut 11b.

[0033] Therefore, by removing the through bolt 11a and pulling the end of the support 5 out of the socket 9, the shelf unit 1, the upper cross bar 2 and the lower cross bar 3 can be disassembled, as shown in Figures 2 and 6.

[0034] The fall-off prevention rod 6 is configured so as to be detachably inserted into an insertion hole 12 provided in the upper and lower horizontal bars 2, 3.

[0035] (Connection structure between posts and shelf components in shelf unit) As shown in Figures 8 to 14, the shelf member 4 is configured so that, with the end 4c of the bone portion 4a facing the inside of the support 5, it can be detachably fixed by screwing a single mounting bolt 13 inserted from the outside of the support 5 into the end 4c, and anti-rotation means 14 is provided between the end 4c and the inside of the support 5.

[0036] In this case, in the illustrated embodiment, a mounting bracket 15 is fixed to the end 4c of the bone portion 4a of the shelf member 4, and a mounting bolt 13 inserted through an insertion hole 17 of the support 5 is screwed into a screw hole 16 provided in the mounting bracket 15. Although the screw hole 16 is illustrated as being formed by tapping into the through hole of the mounting bracket 15, it may be formed by a separate nut.

[0037] As shown in Figure 9, the mounting bracket 15 has a fixing portion 18 that is inserted and fixed into the end portion 4c of the bone portion 4a, and a mounting portion 19 that is arranged outside the end portion 4c, and the screw hole 16 is provided in the mounting portion 19.

[0038] The fixing portion 18 is formed by a pair of upper and lower tongue pieces bent from the upper and lower edges of the mounting portion 19, and is provided with a fixing hole 18a that penetrates the upper and lower tongue pieces, and a positioning portion 18b formed by an approximately V-shaped notch at the tip edge.

[0039] In contrast, the end 4c of the frame 4a of the shelf member 4 is provided with a positioning pin 20 which positions the mounting bracket 15 by abutting the positioning portion 18b when the fixing portion 18 is inserted into the end 4c, and when positioned in this way, a pin hole 21 is formed which mates with and communicates with the fixing hole 18a.

[0040] As a result, the mounting bracket 15 is fixed to the end 4c of the bone portion 4a by inserting the fixing portion 18 into the end 4c of the bone portion 4a and, with the fixing portion 18b and the positioning pin 20 positioned, inserting the mounting pin 22 into the pin hole 21 and the fixing hole 18a.

[0041] In this state, the mounting bracket 15 fixed to the end 4c of the frame 4a of the shelf member 4 has its mounting portion 19 positioned on the outside of said end 4c, and with said mounting portion 19 facing the inside of the support 5, as described above, the mounting bolt 13 inserted into the insertion hole 17 of the support 5 is screwed into the screw hole 16, thereby fixing the mounting bracket 15 to the support 5.

[0042] At this time, anti-rotation means 14 for preventing the mounting bracket 15 from rotating around the axis of the mounting bolt 13 is provided on the inside of the support pillar 5 and on the mounting portion 19 .

[0043] As shown in Figures 11 to 14, the anti-rotation means 14 is composed of a first abutment surface 23 provided on the inside of the support pillar 5 and a second abutment surface 24 provided on the mounting portion 19 of the mounting bracket 15, and when the mounting bolt 13 is screwed into the screw hole 16 and fastened, the first abutment surface 23 and the second abutment surface 24 are brought into surface contact with each other, thereby preventing relative rotation between them.

[0044] 11, in the illustrated embodiment, the support 5 has an insertion hole 17 in a central wall portion 25 with which the mounting portion 19 of the mounting bracket 15 faces, and has ribs 26, 26 on both sides of the insertion hole 17, with first contact surfaces 23 formed on each of the ribs 26, 26. In this case, the pair of first contact surfaces 23, 23 have tapered surfaces that widen outwardly as indicated by the angle θ1 with respect to the axis XX of the insertion hole 17.

[0045] In contrast, the mounting portion 19 of the mounting fitting 15 forms second abutment surfaces 24 on ears 27, 27 extending on both sides of the screw hole 16. The pair of second abutment surfaces 24, 24 have tapered surfaces that widen outwardly as indicated by an angle θ2 with respect to the axis XX of the screw hole 16, and it is preferable that θ1=θ2 with respect to the angle θ1.

[0046] Therefore, as shown in Figures 12 to 14, when the first abutment surfaces 23, 23 of the support 5 and the second abutment surfaces 24, 24 of the mounting bracket 15 are overlapped, the mounting bolt 13 is inserted into the insertion hole 17 from the outside of the support 5 and screwed into the screw hole 16 of the mounting bracket 15 to fasten them, the first abutment surface 23 and the second abutment surface 24 are pressed against each other, thereby firmly attaching the shelf member 4 to the support 5.

[0047] As shown in the figure, a headed bolt with a head 13a is used as the mounting bolt 13, and with the head 13a in contact with the outside of the central wall 25 of the pillar 5, the mounting portion 19 is pulled in by the screw hole 16 into which it is screwed, thereby pressing the first contact surface 23 and the second contact surface 24 together. At this time, as shown in Figure 13, it is preferable to configure the structure so that a gap G is formed between the central wall 25 of the pillar 5 and the mounting portion 19 of the mounting bracket 15, thereby ensuring the fastening force of the mounting bolt 13.

[0048] In this manner, the shelf unit 1 is configured such that the shelf member 4 can be detachably attached to the support 5 by a single mounting bolt 13, so that attachment and removal can be performed simply and easily.

[0049] In the installed state, as shown in Figures 13 and 14, the first abutment surface 23 of the support 5 and the second abutment surface 24 of the mounting bracket 15 constituting the anti-rotation means 14 are pressed against each other while forming tapered surfaces inclined toward the axis X of the mounting bolt 13, thereby preventing the shelf member 4 from rotating in the axial direction R relative to the axis X of the mounting bolt 13, and enabling the seedling boxes to be supported suitably.

[0050] In the above-described illustrated embodiment, a configuration has been described in which the mounting bracket 15 is fixed to the end 4c of the bone portion 4a of the shelf member 4, and the mounting bracket 15 is provided with a screw hole 16 and a second abutment surface 24. However, by adopting a configuration other than such mounting bracket 15, the end 4c of the bone portion 4a may be provided with a screw hole 16 and a second abutment surface 24. [Explanation of symbols]

[0051] 1 Shelf Unit 1A Intermediate shelf unit 1B End shelf unit 2 Upper crosspiece 3 Lower crosspiece 4 Shelf parts 4a Bones 4b Wing 4c End of bone 5 pillars 6 Anti-fall rod 7 Connecting fittings 7A Intermediate connecting fitting 7B End joint fittings 8 Split bracket 8a Attachment 8b Half cylinder part 9 Sockets 10a through bolt 10b Nut 11a Through bolt 11b Nut 12 Insertion hole 13 Mounting bolt 13a head 14 Anti-rotation means 15 Mounting bracket 16 screw holes 17 Insertion hole 18 Fixed part 18a Fixing hole 18b Positioning part 19 Mounting part 20 Positioning pin 21 Pin hole 22 Mounting pin 23 First contact surface 24 Second contact surface 25 Central wall 26 Ribs 27 Ears

Claims

1. A seedling box storage shelf in which a shelf unit is formed by erecting a plurality of shelf members arranged in parallel at intervals in the vertical direction between a pair of supports, and in a state in which the plurality of shelf units are arranged in a row with storage spaces formed between them, the upper and lower ends of the supports are detachably connected by upper and lower cross bars, respectively, and both ends of seedling boxes to be loaded into the storage spaces are supported by the shelf members, The support post (5) and shelf member (4) constituting the shelf unit (1) are detachably fixed to each other by screwing a single mounting bolt (13) inserted from the outside of the support post (5) into an end portion (4c) of the shelf member, and anti-rotation means (14) are provided on the end portion (4c) of the shelf member and on the inside of the support post (5). The seedling box storage shelf is characterized in that the anti-rotation means (14) is formed by mutual surface contact between a first abutment surface (23) provided on the inside of the support (5) and a second abutment surface (24) provided on the end (4c) of the shelf member, and the first abutment surface (23) and the second abutment surface (24) are formed by tapered surfaces inclined with respect to the axis of the mounting bolt (13) on both sides of the mounting bolt (13), and are configured to prevent the shelf member (4) from rotating around the axis of the mounting bolt (13).

2. The shelf member (4) includes a hollow bone portion (4a) that is installed between a pair of supports (5) and a wing portion (4b) that extends from the bone portion and supports an end portion of the seedling box. A mounting bracket (15) with a screw hole is fixed to an end portion (4c) of the bone portion (4a). The inside of the support (5) forms ribs (26) that are located on both sides of an insertion hole (17) through which the shank of the headed mounting bolt (13) is inserted and that have the first abutment surface (23), The seedling box storage shelf described in claim 1, characterized in that the mounting bracket (15) has a fixing portion (18) inserted and fixed into the end portion (4c) of the bone portion, and a mounting portion (19) arranged outside the end portion (4c) of the bone portion, the screw hole (16) is provided in the mounting portion (19), and the second abutment surface (24) is formed on ear portions (27) extending on both sides of the screw hole.

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