Tray

Abstract

The invention provides a tray which can reduce the burden of an operator. An assembled tray (1) is provided with: four tray constituent bodies (2); and a fixing body (3) for connecting and fixing the four tray forming bodies (2). In addition, the tray forming body (2) can be connected and fixed by the fixing body (3) as long as the fixing body (3) is rotated in the locking direction to be in the locking state. In addition, connection and fixation by the fixing body can be released as long as the fixing body (3) is rotated in the unlocking direction to be in the unlocking state.

Description

Technical Field

[0001] Embodiments of the present invention relate to trays. Background Technology

[0002] Previously, there were known trays (assembly trays), such as those described in Patent Document 1 below.

[0003] The existing pallet is constructed by connecting and fixing four roughly rectangular pallet components (pallet units) in a matrix arrangement (2 rows and 2 columns) along the longitudinal and transverse directions when viewed from above.

[0004] Patent Document 1: Japanese Utility Model Application Publication No. 50-23856

[0005] However, in the existing pallets mentioned above, for example when the operator is assembling the pallets, in order to connect and fix two adjacent pallet components to each other, the bolts must be rotated in the tightening direction and the retaining rings must be installed into the grooves and sockets. Therefore, the assembly operation is complicated and time-consuming, which becomes a great burden for the operator. Summary of the Invention

[0006] Therefore, one of the objectives of embodiments of the present invention is to provide a tray that reduces the burden on operators.

[0007] The pallet according to an embodiment of the present invention includes: one pallet assembly and another pallet assembly; and a fixing body for connecting and fixing the one pallet assembly and the other pallet assembly to each other. When the fixing body is rotated by a predetermined angle in one direction to a first state, the one pallet assembly and the other pallet assembly are connected and fixed to each other by the fixing body. When the fixing body is rotated by a predetermined angle in another direction to a second state, the connection and fixation of the one pallet assembly and the other pallet assembly by the fixing body is released.

[0008] According to the embodiments of the present invention, the burden on operators can be reduced. Attached Figure Description

[0009] Figure 1 This is a perspective view of a tray (in an assembled state) according to one embodiment of the present invention.

[0010] Figure 2 This is a three-dimensional view of the aforementioned tray (in its disassembled state).

[0011] Figure 3 This is a perspective view of the upper side of the tray assembly that constitutes the aforementioned tray.

[0012] Figure 4This is a perspective view of the lower side of the aforementioned tray assembly.

[0013] Figure 5 This is a top view of the aforementioned tray assembly.

[0014] Figure 6 This is a partial perspective view of the aforementioned tray assembly.

[0015] Figure 7 This is a diagram showing a fixing body used to secure the above-mentioned tray components to each other. Figure 7 (a) is a three-dimensional view from the top side. Figure 7 (b) is a three-dimensional view from the bottom side. Figure 7 (c) is the top view.

[0016] Figure 8 (a) is a diagram of the above-mentioned fixed body in the unlocked state. Figure 8 (b) is a diagram of the above-mentioned fixed body in the locked state.

[0017] Figure 9 Figures (a) to (d) are diagrams illustrating the assembly method (assembly process) of the above-mentioned tray.

[0018] Figure 10 (a) is a side view of the assembled tray. Figure 10 (b) is the aforementioned Figure 10 Enlarged top view and sectional view along line AA of part b in (a). Figure 10 (c) is the aforementioned Figure 10 An enlarged sectional view of part c in (b).

[0019] Label Explanation

[0020] 1: Tray; 2: Tray component; 3: Fixing body; 11: Fitting protrusion; 16: Upper overlapping part as one overlapping part; 17: Lower overlapping part as the other overlapping part; 31: Rotation limiting protrusion as a rotation limiting part; 32: Rotation limiting part in one direction; 33: Rotation limiting part in another direction; 56: Upper clamping part as one clamping part; 57: Lower clamping part as the other clamping part; 59: Arc plate; 61: Contact surface; X: Rotation center axis. Detailed Implementation

[0021] Reference Figures 1 to 10 One embodiment of the present invention will be described.

[0022] exist Figure 1 and Figure 2 In this context, 1 is an assembly pallet that can be disassembled and reassembled, such as a forklift pallet (assembly type pallet) made of resin (polypropylene, etc.) composed of synthetic resin.

[0023] That is, pallet 1 is a loading and unloading platform for handling goods when using a forklift. Goods are placed on pallet 1 in an assembled state that is rectangular in shape (a square shape with the same specified dimensions, such as 1100mm or 1300mm, on each side) obtained by a specified assembly method.

[0024] Furthermore, the pallet 1 is constructed by connecting and fixing multiple pallet components (divided pallet bodies) 2, which are roughly rectangular in shape, in a matrix arrangement (2 rows and 2 columns) in the longitudinal and transverse directions when viewed from above. In addition, each pallet component 2 has a fork insertion slot 5 for inserting forklift forks.

[0025] More specifically, the pallet 1 has: a plurality of pallet components 2, such as 4 (4 pieces), which have fork insertion openings 5; and a plurality of fixing bodies 3, such as 12, which are used to connect and fix two pallet components 2 that are adjacent to each other in the longitudinal and transverse directions in the assembled state (one pallet component and another pallet component that are adjacent to each other in the assembled state) to each other.

[0026] Furthermore, all four tray components 2 constituting one tray 1 are identical synthetic resin parts (common components). Also, all twelve resin fasteners 3 that connect and fix adjacent tray components 2 to each other are identical synthetic resin parts (common components). Each of these synthetic resin parts is integrally formed using a mold through injection molding or similar methods.

[0027] like Figures 3 to 5 As shown, the tray assembly 2 has a plurality of, for example, four, interlocking protrusions 11 that open upwards and protrude downwards and are generally cylindrical.

[0028] Furthermore, when the separate pallet components 2 are stacked one on top of the other, the fitting protrusion 11 of the upper pallet component 2 and the fitting protrusion 11 of the lower pallet component 2 are fitted together in a manner that allows them to fit and disengage. That is, the multiple pallet components 2 are a structure that can be stacked in multiple layers in the vertical direction, and when the pallet 1 is in the disassembled state, the multiple pallet components 2 can be loaded into a vehicle (truck, passenger car, etc.) with one-quarter of the planar area.

[0029] Additionally, the fitting protrusions 11 are, for example, formed as an inverted truncated pyramid with an upper surface opening 12 and a lower surface opening 13, and have four side plates 14. The plurality of fitting protrusions 11 do not have to be exactly the same shape, but can be substantially the same shape.

[0030] Furthermore, the tray component 2 is located on one side (in Figure 5The right side (in the middle) has an upper overlapping portion 16 that is elongated and serves as one side overlapping portion, and on the other side (in the middle) perpendicular to this side portion... Figure 5 The upper part (the middle part) has a lower overlapping part 17 that is long and narrow and serves as the overlapping part on the other side.

[0031] Furthermore, when two adjacent tray components 2 are connected and fixed to each other in a longitudinal and transverse (horizontal) manner using multiple fixing bodies 3 (in the case of assembling tray 1), the upper overlapping portion 16 of one tray component 2 and the lower overlapping portion 17 of the other tray component 2 adjacent to that one tray component 2 overlap each other vertically. That is, the fixing bodies 3 are detachably installed at multiple points on the overlapping upper overlapping portions 16 and lower overlapping portions 17. In addition, when tray 1 is assembled, the four upper overlapping portions 16 are arranged in a cross shape when viewed from above (see reference). Figure 1 ).

[0032] The upper overlapping portion 16 has a plurality of bottomed cylindrical portions 21, for example, three cylindrical portions 21, that open upwards. These three cylindrical portions 21 are formed at both ends and the center of the elongated upper overlapping portion 16 along its length. Furthermore, each cylindrical portion 21 has a circular plate-shaped base plate 22 and a cylindrical peripheral wall 23 erected at the periphery of the base plate 22.

[0033] On the base plate 22, an elongated hole 24 is formed through the upper and lower surfaces of the base plate 22, extending along the length of the upper overlapping portion 16. The elongated hole 24 has: a circular hole 26 in a circular shape, which allows the central shaft portion 51 of the fixing body 3 to be inserted through (fitted in); and two rectangular holes 27 in a rectangular shape, which communicate with the two sides of the circular hole 26, allowing the lower clamping portion 57 of the fixing body 3 to pass through.

[0034] Furthermore, on the upper surface of the base plate 22, a plurality of arc-shaped rotation limiting protrusions 31, such as two, are provided upwardly as rotation limiting parts, in a manner that is separated from and opposite to the lower part of the inner circumferential surface of the peripheral wall 23 (see reference). Figure 6 The multiple rotation limiting protrusions 31 restrict the rotation of the fixed body 3 as necessary when the operator manually rotates the fixed body 3 with the rotation center axis X in the vertical direction as the center.

[0035] The rotation-limiting protrusion 31 is formed in an arc shape centered on the rotation center axis (rotation center) X of the fixed body 3. That is, the rotation-limiting protrusion 31 is, for example, formed by a rotation-limiting protrusion, and when viewed from above, it is formed in a predetermined arc shape centered on the rotation center axis (rotation center) X of the fixed body 3. Furthermore, the pair of two rotation-limiting protrusions 31 are arranged in a symmetrical position centered on the rotation center axis X when viewed from above (see reference). Figure 8 ).

[0036] The lower overlapping portion 17 has a plurality of bottomed cylindrical portions 41, for example, three, that open upwards. These three cylindrical portions 41 are formed at both ends and the center of the elongated lower overlapping portion 17 along its length. Furthermore, each cylindrical portion 41 has a circular plate-shaped base plate 42 and a cylindrical peripheral wall 43 erected at the periphery of the base plate 42.

[0037] On the base plate 42, an elongated hole 44 is formed through the upper and lower surfaces of the base plate 42, extending along the length of the lower overlapping portion 17. The elongated hole 44 has: a circular hole 46 in a circular shape, which allows the central shaft portion 51 of the fixing body 3 to be inserted through (fitted in); and two rectangular holes 47 in a rectangular shape, which communicate with the two sides of the circular hole 46, allowing the lower clamping portion 57 of the fixing body 3 to pass through.

[0038] Furthermore, on the upper surface of the base plate 42, a plurality of support protrusions 50 are provided upwardly as support parts. When the operator assembles the pallet 1, the support protrusions 50 support the lower surface of the base plate 22 of the cylindrical part 21 of the upper overlapping part 16 when the two overlapping parts 16 and 17 are overlapped vertically.

[0039] like Figure 7 and Figure 8 As shown, the fixing body 3 is a fixing operating component (locking component) that can be rotated by the operator's fingertips with the rotation center axis X in the vertical direction without using any tools (tool-free).

[0040] like Figure 7 As shown in (a) to (c), the fixed body 3 has a cylindrical central shaft portion (rotation shaft portion) 51 through which the rotation center axis X passes in the vertical direction. A slender cuboid gripping portion 52 is provided at the upper end of the central shaft portion 51 for the operator to pinch with their fingertips.

[0041] Multiple protrusions 53 (53a, 53b) are formed on the surface of the gripping part 52. Furthermore, the longitudinal protrusions 53 (53a) formed on both sides of the gripping part 52 are protrusions for preventing fingertip slippage when the operator operates the fixing body 3 with their fingertips. On the other hand, the transverse protrusions 53 (53b) formed on the upper surface of the gripping part 52 are protrusions for preventing goods placed on the pallet 1 from shifting forward, backward, left, and right in the first state (locked state).

[0042] Furthermore, a pair of two (or more) plate-shaped upper clamping portions 56, which serve as one clamping portion, are provided on the outer peripheral surface of the central shaft portion 51, and a pair of two (or more) cuboid-shaped lower clamping portions 57, which serve as the other clamping portion, are provided on the outer peripheral surface of the central shaft portion 51.

[0043] The upper clamping part 56 has, for example, two fan-shaped fan plates 58; one arc-shaped arc plate 59, which protrudes downward from the arc ends of the two fan plates 58 in a manner connecting the two fan plates 58; and two straight straight plates 60, which protrude downward from the straight ends of the two fan plates 58 respectively.

[0044] Similar to the rotation limiting protrusion 31, the arc plate 59 is formed in an arc shape centered on the rotation center axis (rotation center) X of the fixed body 3. Furthermore, the length of the arc direction of the rotation limiting protrusion 31 is shorter than the length of the arc direction of the arc plate 59, for example, less than half.

[0045] Furthermore, the arc-shaped plate 59 has an arc-shaped contact surface 61 on its inner circumferential surface, which is in surface contact with the outer circumferential surface of the arc-shaped rotation limiting part 31 located concentrically with the arc-shaped plate 59 (see reference). Figure 10 (c)).

[0046] here, Figure 8 (a) is a diagram of the aforementioned fixed body 3 in the unlocked state (the left diagram is a top view, and the right diagram is a sectional view), and, Figure 8 (b) is a diagram of the above-mentioned fixed body 3 in the locked state (the left diagram is a top view, and the right diagram is a cross-sectional view).

[0047] Furthermore, in Figure 8 In the state where the fixed body 3 is inserted into the cylindrical portion 21 of the upper overlapping portion 16 in the unlocked state (as shown in (a) with the central shaft portion 51 rotatably inserted into the two circular holes 26, 46), when the operator rotates the fixed body 3 by a predetermined angle, such as 90 degrees, around the rotation center axis X in the locking direction (the direction of the arrow in the figure is clockwise), switching the fixed body 3 to the first locked state, as shown in (a)... Figure 8 As shown in (b), two adjacent tray components 2 are connected and fixed to each other by the fixing body 3.

[0048] That is, in this Figure 8 When the fixing body 3 is in the locked state as shown in (b), the cylindrical portions 21 and 41 of the two tray components 2, namely the overlapping portions 16 and 17, are clamped and fixed to each other by the upper clamping portion 56 and the lower clamping portion 57 of the fixing body 3 (see reference). Figure 10 (b)

[0049] On the other hand, Figure 8In the locked state (b) where the fixing body 3 is inserted into the cylindrical portion 21 of the upper overlapping portion 16 (with the central shaft portion 51 rotatably inserted into the two circular holes 26, 46), when the operator uses their fingertips to rotate the fixing body 3 about the rotation center axis X in the opposite direction of the locking release direction (the direction of the arrow in the diagram is counterclockwise) by a predetermined angle, for example, 90 degrees, to switch the fixing body 3 to the second locked-out state, as shown below, Figure 8 As shown in (a), the connection between the fixing body 3 and the two tray components 2 is released.

[0050] That is, in this Figure 8 When the fixing body 3 shown in (a) is in the unlocked state, the lower clamping part 57 is located below the elongated holes 24 and 44 of the base plates 22 and 42, thereby releasing the clamping fixation of the upper clamping part 56 and the lower clamping part 57 of the fixing body 3 on the cylindrical portions 21 and 41 of the overlapping portions 16 and 17 of the two tray components 2 (locking release).

[0051] In this way, the operator can selectively switch the fixed body 3 to the locked state and the unlocked state by simply rotating (horizontally) the fixed body 3 by 90 degrees, thus making it easy to fix and unlock two adjacent pallet components 2.

[0052] Furthermore, as described above, when the operator manually rotates the operating fixture 3 without tools to selectively switch between the locked state and the unlocked state, the rotating fixture 3 abuts (contacts) with the rotation limiting protrusion 31 of the tray component 2, and the rotation is restricted, so it will not rotate more than 90 degrees as a predetermined angle.

[0053] Furthermore, the operator can visually identify the state of the fixed body 3 (locked state, unlocked state) by the contact between the fixed body 3 and the rotation limiting protrusion (stop) 31. In addition to its stopping function, the rotation limiting protrusion 31 also has a guiding function to guide the arc plate 59 when the fixed body 3 is rotated by the operator's manual operation.

[0054] Here, the rotation limiting protrusion 31 on the bottom plate 22 of the cylindrical portion 21 of the upper overlapping portion 16 of the tray component 2 has: a rotation limiting portion 32 in one direction, which limits the rotation of the fixing body 3 in a locking direction as one direction and positions the fixing body 3 in a locked state; and a rotation limiting portion 33 in another direction, which limits the rotation of the fixing body 3 in a locking release direction as another direction and positions the fixing body 3 in a locking release state.

[0055] The unidirectional rotation limiting portion 32 is formed by one end of the rotation limiting protrusion 31 in the arc direction. Furthermore, the unidirectional rotation limiting portion (abutment portion) 32 formed by this end is limited by abutting against abutment bearing portion 36 of the straight plate (vertical wall) 60 of the upper clamping portion 56. Figure 8 (b) shows the further rotation of the fixed body 3 in the locking direction in the locked state. In addition, an abutment bearing portion 36 is located at the corner portion where the outer end of the straight plate 60 is connected to one end of the arcuate plate 59 in the arcuate direction.

[0056] Furthermore, the rotation-limiting portion 33 in another direction is formed by the other end of the rotation-limiting protrusion 31 in the arc direction. Moreover, the rotation-limiting portion in another direction (another abutting portion) 33 formed by this other end is limited by abutting against another abutting bearing portion 37 of the straight plate (vertical wall) 60 of the upper clamping portion 56. Figure 8 The fixed body 3, in the unlocked state shown in (a), rotates further in the unlocking direction. In addition, another abutment bearing portion 37 is located at the corner portion where the outer end of the straight plate 60 connects to the other end of the arc plate 59 in the arc direction.

[0057] Next, refer to Figure 9 The assembly method of tray 1 is described.

[0058] In the case of assembling pallet 1, firstly, as Figure 9 As in (a) and (b), the operator places the four tray components 2 on the mounting surface and assembles them into a square shape by overlapping the upper overlapping portion 16 and the lower overlapping portion 17 vertically.

[0059] Next, as Figure 9 As in (c) and (d), the operator inserts the fixing body 3 from above and places it in the cylindrical portion 21 of the upper overlapping portion 16 of the tray structure 2 by means of the lower clamping part 57 passing through the rectangular hole 47 of the base plate 22, 42.

[0060] At this time, the upper clamping part 56 slides in contact with the upper surface of the base plate 22, and the central shaft part 51 is rotatably inserted and held in the circular holes 26 and 46 of the base plates 22 and 42. As a result, the fixing body 3 is in a state where it can rotate about the central shaft part (rotation center axis X) 51 in the vertical direction relative to the two overlapping parts 16 and 17. In addition, in this state, the rotation limiting protrusion 31 on the base plate 22 is located in the upper clamping part 56 of the fixing body 3.

[0061] Next, the operator pinches the holding part 52 with their fingertips and rotates the fixed body 3 90 degrees in the locking direction with the rotation center axis X as the center until the rotation restriction part 32 in one direction abuts against a receiving part 36.

[0062] In this way, the fixing body 3 switches from the unlocked state to the locked state by the 90-degree rotation, and the two adjacent tray components 2 are connected and fixed to each other by the fixing body 3 in the locked state.

[0063] Thus, by connecting and fixing the four tray components 2 with 12 fixing bodies 3, the assembly of the tray 1 is completed. Furthermore, regarding the disassembly of the tray 1, simply rotate the fixing body 3 90 degrees to return it to the locked-out state, thereby releasing the connection and fixing based on the fixing body 3, and then remove the fixing body 3 in the locked-out state from the cylindrical part 21 and separate the tray component 2.

[0064] Furthermore, when using the assembled pallet 1 to transport goods, after placing the goods on the pallet assembly 2 that constitutes the pallet 1, the forklift forks are inserted into the fork insertion slots 5 to transport the pallet 1 and the goods together.

[0065] Here, the rotation limiting protrusion 31 of the tray assembly 2, in addition to the stopping and guiding functions, also has a deflection suppression function to suppress the deflection of the tray 1 when it is in the assembled state.

[0066] That is, for example, in situations such as Figure 10 When goods are placed on pallet 1 for transport in a manner where the external force F acts only on both ends of the assembled pallet 1 as in (a), the connecting parts (connecting parts) of the two adjacent pallet components 2 want to open, and the deflection of pallet 1 wants to expand.

[0067] However, as Figure 10 As shown in (b) and (c), when the assembled pallet 1 deflects, the outer peripheral surface (outer surface) of the upward-protruding, arc-shaped rotation-limiting protrusion 31 contacts the inner peripheral surface 61 of the arc plate 59 of the fixing body 3 in a planar contact, thus suppressing the deflection of the pallet 1. Therefore, adverse situations such as cargo collapse can be prevented, and goods can be transported stably.

[0068] Furthermore, according to the aforementioned tray 1, when the fixing body 3 is rotated to the locking direction by a predetermined angle (e.g., 90 degrees) to become locked, one of the two adjacent tray components 2 and the other tray component 2 are connected and fixed to each other by the fixing body 3. Moreover, when the fixing body 3 is rotated to the locking release direction by a predetermined angle (e.g., 90 degrees) to become locked and released, the connection between the fixing body 3 and the two tray components 2 is released. Therefore, compared with the conventional situation, the operator can easily perform the assembly and disassembly operations of the tray 1, thereby reducing the operator's burden.

[0069] Furthermore, the pallet assembly 2 has an arc-shaped rotation limiting protrusion 31 centered on the rotation center axis X of the fixed body 3. The rotation limiting protrusion 31 has: a rotation limiting portion 32 in one direction, which limits the rotation of the fixed body 3 in the locking direction to position the fixed body 3 in the locked state; and a rotation limiting portion 33 in another direction, which limits the rotation of the fixed body 3 in the unlocking direction to position the fixed body 3 in the unlocked state. Therefore, the rotation limiting protrusion 31 can be used to appropriately limit the rotation of the fixed body 3. As a result, the operator can easily position the fixed body 3 in the locked state and the unlocked state, and can intuitively identify the state (locked state, unlocked state) of the fixed body 3.

[0070] Furthermore, the fixing body 3 has an arc plate 59 centered on the rotation center axis X of the fixing body 3. The arc plate 59 has a contact surface 61 that contacts the rotation limiting protrusion 31 when the pallet 1 in the assembled state deflects. Therefore, the deflection of the pallet 1 in the assembled state can be appropriately suppressed by the contact between the rotation limiting protrusion 31 and the contact surface 61 of the arc plate 59. As a result, goods can be transported stably when using the pallet 1.

[0071] Furthermore, the pallet assembly 2 has a downwardly protruding fitting protrusion 11 that opens upwards. When multiple pallet assemblies 2 are stacked vertically, the fitting protrusion 11 of the upper pallet assembly 2 engages with the fitting protrusion 11 of the lower pallet assembly 2. Therefore, multiple pallet assemblies 2 can be stably stacked when the pallet 1 is not in use, and this space-saving design also helps to improve conveying efficiency and reduce conveying burden. In addition, regarding the pallet assembly 2, at least two pallet assemblies 2 can be connected, fixed, and stacked. For example, a pallet 1 obtained by connecting and fixing four pallet assemblies 2 in a longitudinal and transverse direction when viewed from above can also be stacked vertically.

[0072] Furthermore, in the above embodiment, the case in which four pallet components are connected and fixed in a manner arranged in the longitudinal and transverse directions when viewed from above to form a pallet has been described. However, the number of pallet components can be two or more, for example, two or three, or five or more.

[0073] Furthermore, the structure of a fixed body (such as a connecting pin) that becomes a first state by rotating 90 degrees in one direction and a second state by rotating 90 degrees in another direction is described, but the rotation angle can also be other than 90 degrees, such as 45 degrees or 60 degrees.

[0074] Furthermore, it is preferable that all the multiple pallet components are the same common parts, but they do not have to be the same and can be different (the same applies to the fixing body).

[0075] Furthermore, the tray structure and the fixing body are preferably made of a relatively lightweight resin material with sufficient strength, but they can also be made of other materials.

Claims

1. A tray, characterized in that, The tray has: One tray component and another tray component; and A fixing body, used to connect and fix one tray assembly and the other tray assembly to each other. When the fixing body is rotated by a predetermined angle in one direction to reach the first state, the one tray assembly and the other tray assembly are connected and fixed to each other by the fixing body. When the fixing body is rotated by a predetermined angle in another direction to reach the second state, the connection between the fixing body and the one tray assembly and the other tray assembly is released.

2. The pallet according to claim 1, characterized in that, The fixed object is in state 1 by rotating 90 degrees in one direction and in state 2 by rotating 90 degrees in the other direction.

3. The tray according to claim 1 or 2, characterized in that, The tray assembly has a downwardly projecting fitting protrusion that opens upwards. When the tray components are stacked one on top of the other, the fitting protrusion of the upper tray component and the fitting protrusion of the lower tray component fit together.

4. The tray according to claim 1 or 2, characterized in that, The pallet assembly has a rotation limiting part that is more than necessary to restrict the rotation of the fixed body.

5. The pallet according to claim 1 or 2, characterized in that, The tray assembly has an arc-shaped rotation limiting part centered on the rotation center axis of the fixed body. The rotation limiting part has: A directional rotation limiting portion restricts the rotation of the fixed body in one direction, thereby positioning the fixed body in a first state; and The other rotation restriction part restricts the rotation of the fixed body in the other direction so that the fixed body is positioned in the second state.

6. The pallet according to claim 5, characterized in that, The fixed body has an arc-shaped plate centered on the rotational axis of the fixed body. The arc plate has a contact surface that contacts the rotation limiting part.

7. The pallet according to claim 1 or 2, characterized in that, The fixing body has a clamping part on one side and a clamping part on the other side. In the first state of the fixed body, predetermined portions of the two tray components are clamped by the clamping portion of one and the clamping portion of the other. In the second state of the fixed body, the clamping of one clamping part and the clamping part of the other part are released.

8. The tray according to claim 1 or 2, characterized in that, The pallet assembly has an overlapping portion on one side and an overlapping portion on the other side. The fixing body is detachably installed at multiple points on the overlapping portions of one side and the overlapping portions of the other side.

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