Turnover box

Abstract

The invention relates to a turnover box which comprises a base and a plurality of pairs of side plates connected to the base, and is characterized by further comprising a goods fixing device, and the goods fixing device is provided with a first end and a second end which are opposite to each other; the first end of the goods fixing device is connected to the inner side of one of the pair of side plates in a hinged mode, a telescopic spring bolt is arranged at the second end of the goods fixing device, and the spring bolt is used for being locked with a lock groove formed in the other side plate of the pair of side plates in a matched mode so that goods in the box body can be fixed conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of turnover containers, and particularly relates to a turnover box. Background Art

[0002] In the existing fresh food and flower industries, cardboard boxes are mostly used for transportation. Disposable consumables such as packing straps, packing buckles, and tapes are often used when packing goods, resulting in waste of resources and increasing the difficulty of packing operations.

[0003] There is also a turnover box with a lid used for transporting fresh food and flowers. The box body is usually equipped with straps. The straps are installed on the inner side walls of the box body, and there are two straps on the left and right. One end of the strap is fixed to the box body, and the other end is equipped with a buckle. When the goods are loaded, it is necessary to tightly hold the strap to tighten the goods and buckle the buckle to fix the goods. When the goods are filled relatively full, it is difficult to operate only by manually tightening the strap to tie up the goods. Summary of the Invention

[0004] The purpose of the present invention is to provide a turnover box with a goods fixing device to facilitate fixing the goods in the box body.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A turnover box includes a base and multiple pairs of side plates connected to the base, and further includes a goods fixing device. The goods fixing device has opposite first and second ends. The first end of the goods fixing device is hingedly connected to the inner side of one side plate in one pair of side plates, and the second end of the goods fixing device is provided with a retractable lock tongue, and the lock tongue is used to cooperate with a lock groove provided on the other side plate in one pair of side plates for locking.

[0007] In one embodiment, the goods fixing device further includes a reset member, and the reset member acts on the lock tongue and generates a force to maintain the locking of the lock tongue to the lock groove.

[0008] In one embodiment, the goods fixing device includes a goods fixing member, and the goods fixing member includes a goods fixing portion spanning two opposite side plates, and a lever portion extending outside the box body of the turnover box.

[0009] In one embodiment, a side plate inner sinking area is provided on the inner side surface of the side plate, and the goods fixing device is rotatably located in the side plate inner sinking area through the hinged connection with the side plate.

[0010] In one embodiment, the depth of the side plate inner sinking area is not less than the thickness of the goods fixing device.

[0011] In one embodiment, the cargo fixing device includes a cargo fixing member having a cavity extending along its length direction, the locking tongue is slidably located in the cavity, and the locking tongue can be fully retracted into the cavity.

[0012] In one embodiment, the cargo fixing member is provided with a first fixing stop portion, and the locking tongue is provided with a first locking tongue limiting portion. The first fixing stop portion cooperates with the first locking tongue limiting portion to keep the locking tongue retracted in the cavity.

[0013] In one embodiment, the cargo fixing member is provided with a second fixing stop portion, and the locking tongue is provided with a second locking tongue limiting portion. The second fixing stop portion cooperates with the second locking tongue limiting portion to limit the length of the locking tongue extending out of the cavity.

[0014] In one embodiment, the cargo fixing member is provided with a reset member, the reset member acts on the locking tongue, and the reset member generates a force that causes the locking tongue to be fully retracted into the cavity.

[0015] The present invention also provides a turnover box, including a base and a plurality of pairs of side plates connected to the base, and further including a cargo fixing device. The cargo fixing device includes a first cargo fixing member and a second cargo fixing member. One end of the first cargo fixing member is hingedly connected to the inner side of one of the side plates in one pair of side plates, the other end of the first cargo fixing member is hingedly connected to one end of the second cargo fixing member, and the other pair of the second cargo fixing member is provided with a telescopic locking tongue for cooperating with a locking groove provided on the other side plate in one pair of side plates to lock.

[0016] In one embodiment, the first cargo fixing member is provided with an inner sunken area of the fixing member, and the second cargo fixing member can be flipped into the inner sunken area of the fixing member through the hinged connection with the first cargo fixing member.

[0017] In one embodiment, the second cargo fixing member can be hidden within the thickness range of the first cargo fixing member.

[0018] In one embodiment, the side plate is provided with an inner sunken area of the side plate. The first cargo fixing member can be flipped into the inner sunken area of the side plate through the hinged connection with the side plate, and the first cargo fixing member can be hidden within the thickness range of the side plate.

[0019] In one embodiment, the cargo fixing device further includes a reset member, the reset member acts on the locking tongue, and generates a force to maintain the locking of the locking groove on the locking tongue.

[0020] The present invention also provides a turnover box, which includes a base and multiple pairs of side plates connected to the base, and further includes a cargo fixing device. The cargo fixing device includes a first cargo fixing member and a second cargo fixing member. The opposite ends of the first cargo fixing member and the second cargo fixing member are respectively hinged to two opposite side plates. The opposite ends of the first cargo fixing member and the second cargo fixing member are respectively provided with a locking groove and a locking tongue. The locking tongue is telescopically connected to the second cargo fixing member, and the locking tongue is used to cooperate with the locking groove provided in the first cargo fixing member for locking.

[0021] In one embodiment, the side plate hinged to the first cargo fixing member is provided with a first inner sunken area of the side plate, and the first cargo fixing member can be flipped into the first inner sunken area of the side plate through the hinged connection with the side plate; and / or the side plate hinged to the second cargo fixing member is provided with a second inner sunken area of the side plate, and the second cargo fixing member can be flipped into the second inner sunken area of the side plate through the hinged connection with the side plate.

[0022] In one embodiment, the first cargo fixing member can be hidden within the thickness range of the side plate hinged to it; and / or the second cargo fixing member can be hidden within the thickness range of the side plate hinged to it.

[0023] In one embodiment, the cargo fixing device further includes a reset member, and the reset member acts on the locking tongue and generates a force to maintain the locking of the locking groove.

[0024] By adopting the above technical solutions, the present invention has the beneficial effect that a cargo fixing device is provided inside the turnover box provided by the present invention. The two ends of the fixing device can be respectively fixedly connected to the upper ends of two opposite side plates through the locking of the locking tongue and the locking groove of the side plate, so as to play a role in fixing the cargo inside the box.

[0025] In addition, the cargo fixing device provided by the present invention can also be hidden within the thickness range of the side plate, which will not affect the volume inside the box. Especially for a foldable turnover box, the cargo fixing device will not affect the folding of the side plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional schematic diagram of the first cargo fixing device installed inside the turnover box.

[0027] Figure 2 is a three-dimensional schematic diagram of the first cargo fixing device.

[0028] Figure 3 is Figure 2 an enlarged view of part B in

[0029] Figure 4 It is a three-dimensional schematic diagram of the first type of cargo fixing device from another perspective.

[0030] Figure 5 It is Figure 4 The enlarged view of part C in

[0031] Figure 6 It is a three-dimensional schematic diagram of the first type of cargo fixing device in the turnover box in the lifted state.

[0032] Figure 7 It is Figure 6 The enlarged view of part D in

[0033] Figure 8 It is a three-dimensional schematic diagram of the first type of cargo fixing device in the turnover box in the pressed-down state.

[0034] Figure 9 It is Figure 8 The enlarged view of part E in

[0035] Figure 10 It is Figure 1 The enlarged view of part A in

[0036] Figure 11 It is a three-dimensional schematic diagram with the second type of cargo fixing device installed on the side plate.

[0037] Figure 12 It is Figure 11 The enlarged view of part F in

[0038] Figure 13 It is a three-dimensional schematic diagram of one of the second type of cargo fixing devices on the side plate in the unfolded state.

[0039] Figure 14 It is a cross-sectional schematic diagram of the second type of cargo fixing device hidden within the thickness of the side plate.

[0040] Figure 15 It is a cross-sectional schematic diagram of the locking tongue of the second type of cargo fixing device hidden within the cargo fixing part.

[0041] Figure 16 It is a cross-sectional schematic diagram of the locking tongue of the second type of cargo fixing device extending out from the cargo fixing part.

[0042] Figure 17 It is a cross-sectional schematic diagram of the connection structure between the locking tongue and the cargo fixing part of the second type of cargo fixing device.

[0043] Figure 18 It is Figure 17 The enlarged view of part G in

[0044] Figure 19It is a schematic cross-sectional view of the third cargo fixing device installed inside the turnover box.

[0045] Figure 20 It is a three-dimensional schematic view of the third cargo fixing device installed inside the turnover box and the side plate in the unlocked state.

[0046] Figure 21 It is Figure 20 An enlarged view of the H position in

[0047] Figure 22 It is a three-dimensional schematic view of the third cargo fixing device installed inside the turnover box and the side plate in the locked state.

[0048] Figure 23 It is Figure 22 An enlarged view of the I position in

[0049] Figure 24 It is a three-dimensional schematic view of the third cargo fixing device installed inside the turnover box.

[0050] Figure 25 It is Figure 24 An enlarged view of the J position in

[0051] Figure 26 It is a three-dimensional schematic view of the fourth cargo fixing device installed inside the turnover box and the side plate in the unlocked state.

[0052] Figure 27 It is Figure 26 An enlarged view of the K position in

[0053] Figure 28 It is a three-dimensional schematic view of the fourth cargo fixing device installed inside the turnover box and the side plate in the locked state.

[0054] Figure 29 It is Figure 28 An enlarged view of the L position in

[0055] Figure 30 It is a partial cross-sectional view of the second cargo fixing part of the fourth cargo fixing device flipped outside the first cargo fixing part.

[0056] Figure 31 It is Figure 30 An enlarged view of the M position in

[0057] Figure 32 It is a three-dimensional schematic view of the second cargo fixing part of the fourth cargo fixing device flipped outside the first cargo fixing part.

[0058] Figure 33 It is a three-dimensional schematic view of the second cargo fixing part of the fourth cargo fixing device flipped inside the first cargo fixing part.

[0059] Figure 34 It is a schematic cross-sectional view of the fourth type of cargo fixing device hidden within the thickness range of the side plate. Detailed implementation mode

[0060] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to more clearly understand the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present invention, but only to illustrate the essential spirit of the technical solution of the present invention.

[0061] In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0062] Unless the context requires otherwise, throughout the specification and claims, the words "comprising" and its variants, such as "including" and "having", shall be understood in an open, inclusive sense, i.e., shall be interpreted as "including, but not limited to".

[0063] References to "an embodiment" or "one embodiment" throughout the specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in an embodiment" or "in one embodiment" throughout the specification need not all refer to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0064] As used in this specification and the appended claims, the singular forms "a" and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally used in its inclusive sense of "and / or" unless the context clearly dictates otherwise.

[0065] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0066] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0067] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] As Figures 1-3 shown, the present invention provides a turnover box, including a box body. The box body includes a base 11 and four side plates arranged in pairs opposite to each other. The four side plates are divided into a pair of long side plates 12 and a pair of short side plates 13. The pair of long side plates and the pair of short side plates are respectively arranged opposite to each other. The pair of long side plates, the pair of short side plates and the base enclose a rectangular cavity for loading goods. In some cases, the lengths of the long side plates and the short side plates can also be the same, and a square cavity is formed at this time. Each side plate and the base are usually plastic parts, which can be made by existing processes such as thermoforming and injection molding.

[0069] Preferably, the side plates are connected to the base in a manner that can be folded relative to the base. In this embodiment, a plurality of edge guards extending along the thickness direction of the base are provided on the base. Each edge guard is arranged corresponding to one of the side plates, and a plurality of hanging grooves are provided on the inner side of each edge guard. Hooks corresponding to the hanging grooves are also provided at the bottom of each side plate. Each side plate can be pivotally connected to the base in a manner that can be folded relative to the base through the cooperation of the hooks at its own bottom and the corresponding hanging grooves. The box body further includes a box cover 14. One side of the box cover 14 is pivotally connected to the top of one of the long side plates through a hinge, so that the box cover can be flipped to cover the opening of the cavity to make the box body in a fully enclosed state, or can be flipped to the outside of the long side plate to make the box body in an open state for loading operations.

[0070] The turnover box further includes a cargo fixing device 2. Refer to Figures 1-10 , Figures 1-10 for an example of the first structure of the cargo fixing device 2 shown therein. The cargo fixing device 2 includes a cargo fixing member 211, a locking tongue 212 telescopically connected to the cargo fixing member, and a reset member 213. One end of the cargo fixing member 211 is hingedly connected to the inner side wall of one of the side plates. The locking tongue 212 is telescopically connected to the cargo fixing member 211 and is used to cooperate with a locking groove provided on the inner side wall of the other opposite side plate for locking. The reset member 213 is connected to the locking tongue 212 to drive the telescopic movement of the locking tongue 212 and keep the locking tongue 212 maintaining the force for locking the locking groove of the side plate. By locking the locking tongue 212 with the side plate locking groove, both ends of the cargo fixing device 2 are respectively fixedly connected to the upper ends of the two opposite side plates, playing a role in fixing the goods in the box.

[0071] For ease of description, in this example, the cargo fixing member 211 is hingedly connected to the long side left plate 12a, and the lock groove is provided on the long side right plate 12b. The cargo fixing member 211 includes a strip-shaped cargo fixing portion 2111. One end of the cargo fixing portion 2111 is provided with a fixing member rotating shaft portion 2112. A side plate limiting portion 1211 matching the fixing member rotating shaft portion 2112 is provided on the long side left plate 12a. The fixing member rotating shaft portion 2112 is installed in the side plate limiting portion 1211 to achieve the hinged connection between the cargo fixing member 211 and the long side left plate 12a.

[0072] The lock tongue 212 is telescopically connected to the other end of the cargo fixing portion 2111. Specifically, the cargo fixing portion 2111 is provided with a chute 2113. One end of the lock tongue 22 is movably installed in the chute 2113. A first lock tongue limiting portion 2121 is provided on the portion of the lock tongue 212 located in the chute 2113. The cargo fixing portion 2111 is provided with a fixing member stop portion 2115. The first lock tongue limiting portion 2121 and the fixing member stop portion 2115 cooperate to limit the lock tongue 212 from disengaging from the chute 2113. A second lock tongue limiting portion 2122 is also provided on the portion of the lock tongue 212 located in the chute 2113. The reset member 213 in this embodiment is a spring. The two ends of the spring are respectively fixedly connected to the cargo fixing portion 2111 and the second lock tongue limiting portion 2122 to generate an elastic force for moving the lock tongue 212 in the direction of the long side left plate 12a.

[0073] A third lock tongue limiting portion 2123 is provided at the other end of the lock tongue 212. The third lock tongue limiting portion 2123 is used to cooperate with the lock groove 1212 provided on the long side right plate 12b to achieve locking. The lock groove 1212 in this embodiment is provided on the inner side wall of the long side right plate 12b, and the opening of the lock groove 1212 faces the direction of the base 11. The third lock tongue limiting portion 2123 can be inserted into the lock groove 1212, and the upward acting force of the cargo on the lock tongue 212 and the cargo fixing member 211, as well as the pulling force of the spring on the lock tongue 212, are used to prevent the lock tongue 212 from disengaging from the lock groove 1212, realizing the locking between the lock tongue 212 and the lock groove 1212. Preferably, referring to Figure 8 and Figure 9 , a matching lock tongue guiding surface 2124 and a side plate guiding surface 1213 are respectively provided on the third lock tongue limiting portion 2123 and the long side right plate 12b. The third lock tongue limiting portion 2123 is guided into the lock groove 1212 through the cooperation between the lock tongue guiding surface 2124 and the side plate guiding surface 1213.

[0074] Referring again to Figure 2 and Figure 4, the cargo fixing member 211 further includes a lever portion 2114. The lever portion 2114 includes a connecting portion 2114a and a lever portion 2114b. The connecting portion 2114a extends along the thickness direction of the cargo fixing portion 2111, and respectively connects one end portion of the cargo fixing portion 2111 away from the fixing member rotation axis portion 2112 and one end portion connecting the lever portion 2114b. The lever portion 2114b extends along the length direction of the cargo fixing portion 2111, so as to play a role of a lever when the cargo fixing member 211 presses and fixes the cargo, and the cargo can be fixed more labor - saving. Although the lever portion 2114 and the cargo fixing portion 2111 shown in the figure of this embodiment are integrally formed, it is not limited thereto. The lever portion can also be connected to the cargo fixing portion in a detachable connection manner, and then can cooperate with other cargo fixing devices described below to achieve the purpose of saving labor.

[0075] See Figures 11-18 , Figures 11-18 An example of the second structure of the cargo fixing device 2 is shown. The cargo fixing device 2 in this example includes a cargo fixing member 221, a locking tongue 222 telescopically connected to the cargo fixing member, and a reset member 223. One end of the cargo fixing member 221 is hinged to the inner side wall of the long - side left plate 12a. The locking tongue 222 is telescopically connected to the cargo fixing member 221 and is used to cooperate with a locking groove provided on the inner side wall of the long - side right plate for locking. The reset member 223 is connected to the locking tongue 222 and is used to drive the telescopic movement of the locking tongue 222 and keep the locking tongue 222 maintaining the force for locking the locking groove of the long - side right plate. By locking the locking tongue 222 with the side - plate locking groove, both ends of the cargo fixing device 2 are respectively fixedly connected to the upper ends of two opposite side plates, playing a role of fixing the cargo in the box. Since the locking structure of the locking tongue 222 with the locking groove on the long - side right plate is the same as that of the first example, it will not be elaborated here.

[0076] See Figures 11-14, an inner side wall of the long side left plate 12a is provided with an inner sunken area 1221, and a first side plate limiter 1222 is provided above the inner sunken area 1221. A fixing member rotating shaft 2211 provided at one end of the cargo fixing member 221 cooperates with the first side plate limiter 1222 to realize a hinged connection between the cargo fixing member 221 and the long side left plate 12a. To facilitate the assembly between the fixing member rotating shaft 2211 and the first side plate limiter 1222, the fixing member rotating shaft 2211 is further provided with a shaft guide surface 22111. Through the hinged connection between the cargo fixing member 221 and the long side left plate 12a, the cargo fixing device 2 can be rotated into the inner sunken area 1221. Preferably, the depth of the inner sunken area 1221 is not less than the thickness of the cargo fixing member 221, so that the cargo fixing device 2 can be hidden within the thickness range of the long side left plate 12a, so that the existence of the cargo fixing device 2 does not occupy additional space. Furthermore, relative to the box body with foldable side panels, the presence of the cargo securing device 2 will not affect the folding of the side panels.

[0077] See also Figures 15-18 The cargo securing member 221 has a cavity 2212 that can be extended along its length direction. The locking tongue 222 can be slidably located in the cavity 2212, and the locking tongue 222 can be retracted as a whole in the cavity 2212, thereby shortening the minimum length of the entire cargo securing device 2 and making it easier to hide the cargo securing device 2 in the sunken area 1221.

[0078] See also Figure 15 and Figure 16 , Figure 15 and Figure 16 An example of the cargo fixing member 221 and the locking tongue 222 being matched and fixed is shown. The cargo fixing member 221 is provided with a first fixing member stopper 2213 and a second fixing member stopper 2214 arranged at intervals in the length direction. The locking tongue 222 is provided at a first locking tongue limiting portion 2221 matched with the first fixing member stopper 2213 and the second fixing member stopper 2214. The first locking tongue limiting portion 2221 is respectively matched with the first fixing member stopper 2213 and the second fixing member stopper 2214 to prevent the locking tongue 222 from coming out of the cavity 2212. When the first locking tongue limiting portion 2221 is matched with the first fixing member stopper 2213, the entire locking tongue 222 is retracted into the cavity 2212. When the first locking tongue limiting portion 2221 is matched with the second fixing member stopper 2214, part of the locking tongue 222 is located outside the cavity 2212, so as to achieve locking with the long side right plate. In this example, the first stop portion 2213 of the fixing member and the second stop portion 2214 of the fixing member are both windows arranged on the top surface of the cavity 2212, and the first limiting portion 2221 of the locking tongue is an elastic sheet arranged on the locking tongue 222. The fixation between the locking tongue 222 and the cargo fixing member 221 is achieved by snapping the elastic sheet into the corresponding window.

[0079] Preferably, the cargo fixing member 221 is further provided with a third fixing member stop portion 2215, and the locking tongue 222 is provided with a second locking tongue limiting portion 2222 that is matched with the third fixing member stop portion 2215. The second locking tongue limiting portion 2222 and the third fixing member stop portion 2215 cooperate to limit the length of the locking tongue 222 extending out of the cavity 2212. In this example, the third fixing member stop portion 2215 is a convex block located in the cavity 2212, and the second locking tongue limiting portion 2222 is a stop strip that cooperates with the convex block. The cooperation between the convex block and the stop surface limits the length of the locking tongue 222 extending out of the cavity 2212.

[0080] See again Figure 17 and Figure 18 , Figure 17 and Figure 18 and show another example of the cooperation and fixation between the cargo fixing member 221 and the locking tongue 222. Among them, the reset member 223 is a spring, and the two ends of the spring are respectively connected to the cargo fixing member 221 and the locking tongue 222, and generate an elastic force that completely retracts the locking tongue 222 into the cavity 2212. The cargo fixing member 221 is provided with a first fixing member limiting portion 2216, and the locking tongue 222 is provided with a third locking tongue limiting portion 2223 that is matched with the first fixing member limiting portion 2216. The cooperation between the first fixing member limiting portion 2216 and the third locking tongue limiting portion 2223 limits the length of the locking tongue 222 retracting into the cavity 2212. In this example, the third locking tongue limiting portion 2223 is a limiting groove extending along the length direction of the locking tongue 222, and the first fixing member limiting portion 2216 is a limiting strip extending into the limiting groove. The abutment between the limiting strip and the bottom surface of the limiting groove limits the length of the locking tongue 222 retracting into the cavity 2212.

[0081] The cargo fixing member 221 is further provided with a fourth fixing member stop portion 2217, and the locking tongue 222 is further provided with a fourth locking tongue limiting portion 2224. The cooperation between the fourth fixing member stop portion 2217 and the fourth locking tongue limiting portion 2224 limits the length of the locking tongue extending out of the cavity 2212. In this example, the fourth fixing member stop portion 2217 is a convex block, and the fourth locking tongue limiting portion 2224 is a stop strip that matches the convex block.

[0082] See Figures 19-25 , Figures 19-25An example of the third structure of the cargo fixing device 2 is shown. The cargo fixing device 2 in this example includes a first cargo fixing member 231 and a second cargo fixing member 232. The opposite ends of the first cargo fixing member 231 and the second cargo fixing member 232 are respectively hinged to the long side left plate 12a and the long side right plate 12b. Lock tongues and lock grooves are respectively provided at the ends of the first cargo fixing member 231 and the second cargo fixing member 232 that are close to each other. In this example, it is illustrated by taking the lock groove 2311 provided on the first cargo fixing member 231 and the lock tongue 233 provided on the second cargo fixing member 232 as an example. In actual application, the lock tongue can also be provided on the first cargo fixing member 231 and the lock groove on the second cargo fixing member 232.

[0083] The lock tongue 233 is telescopically connected to the second cargo fixing member 232. A reset member 234 is also provided inside the second cargo fixing member 232. The reset member 234 is connected to one end of the lock tongue 233 to drive the telescopic movement of the lock tongue 233 and keep the lock tongue 233 maintaining the force for locking the lock groove 2311 of the first cargo fixing member 231. By providing a lock tongue limiting portion 2331 at the other end of the lock tongue 233, through the locking of the lock tongue limiting portion 2331 and the lock groove 2311 of the first cargo fixing member 231, both ends of the cargo fixing device 2 are respectively fixedly connected to the upper ends of two opposite side plates, playing a role in fixing the cargo in the box.

[0084] To facilitate the locking between the lock tongue 233 and the lock groove 2311, a lock tongue guiding portion 2332 is provided on the lock tongue limiting portion 2331, and a lock groove guiding portion 23111 is provided on the lock groove 2311. The lock tongue 233 is guided into the lock groove 2311 through the cooperation between the lock tongue guiding portion 2332 and the lock groove guiding portion 23111.

[0085] The long side left plate 12a is provided with a first inner sunken area 1231, and the long side right plate 12b is provided with a second inner sunken area 1232. Among them, the first cargo fixing member 231 is hingedly connected to the upper part of the first inner sunken area 1231, so that the first cargo fixing member 231 can be rotated into the first inner sunken area 1231. Preferably, the depth of the depression of the first inner sunken area 1231 is not less than the thickness of the first cargo fixing member 231, so that the first cargo fixing member 231 can be hidden within the thickness range of the long side left plate 12a. The second cargo fixing member 232 is hingedly connected to the upper part of the second inner sunken area 1232, so that the second cargo fixing member 232 can be rotated into the second inner sunken area 1232. Preferably, the depth of the depression of the second inner sunken area 1232 is not less than the thickness of the second cargo fixing member 232, so that the second cargo fixing member 232 can be hidden within the thickness range of the long side right plate 12b.

[0086] In this example, one end of the first cargo fixing member 231 is provided with a first fixing member rotating shaft portion 2312, and the long side left plate 12a is provided with a first side plate limiting portion 1233 that is matched with the first fixing member rotating shaft portion 2312. The hinged connection between the first cargo fixing member 231 and the long side left plate 12a is realized through the cooperation between the first fixing member rotating shaft portion 2312 and the first side plate limiting portion 1233. Similarly, one end of the second cargo fixing member 232 is provided with a second fixing member rotating shaft portion 2321, and the long side right plate 12b is provided with a second side plate limiting portion 1234 that is matched with the second fixing member rotating shaft portion 2321. The hinged connection between the second cargo fixing member 232 and the long side right plate 12b is realized through the cooperation between the second fixing member rotating shaft portion 2321 and the second side plate limiting portion 1234.

[0087] See Figures 24-25 , in this example, the opposite ends of the first cargo fixing member 231 and the second cargo fixing member 232 are also provided with portions that abut against each other. On the abutting portion, the first cargo fixing member 231 is provided with a first fixing member limiting portion 2313, and the first cargo fixing member 231 is provided with a second fixing member limiting portion 2322 that is matched with the first fixing member limiting portion 2313. The first fixing member limiting portion 2313 and the second fixing member limiting portion 2322 cooperate to limit the separation of the first cargo fixing member 231 and the second cargo fixing member 232.

[0088] See Figures 26-34 , Figures 26-34 An example of the fourth structure of the cargo fixing device 2 is shown in . The cargo fixing device 2 in this example includes a first cargo fixing member 241 and a second cargo fixing member 242. One end of the first cargo fixing member 241 is hingedly connected to the long side left plate 12a, one end of the second cargo fixing member 242 is hingedly connected to the other end of the first cargo fixing member 241, and a locking tongue 243 is connected to the other end of the second cargo fixing member 242. The locking tongue 243 is telescopically connected to the second cargo fixing member 242. A reset member 244 is further provided in the second cargo fixing member 242. The reset member 244 is connected to one end of the locking tongue 243 to drive the telescopic movement of the locking tongue 243 and keep the locking tongue 243 maintaining a force for locking the locking groove 1241 on the long side right plate 12b. The locking tongue 243 is provided with a first locking tongue limiting portion 2431 that is matched with the locking groove 1241 on the long side right plate 12b. The first locking tongue limiting portion 2431 is used to cooperate with the locking groove 1241 provided on the long side right plate 12b to achieve locking. The locking tongue 243 is further provided with a second locking tongue limiting portion 2432, and the second cargo fixing member 242 is provided with a second fixing member stopping portion 2422 that is matched with the second locking tongue limiting portion 2432. The length of the extension of the locking tongue 243 is limited through the cooperation between the second locking tongue limiting portion 2432 and the second fixing member stopping portion 2422.

[0089] In this example, a first fixing member rotating shaft portion 2411 is provided at one end of the first cargo fixing member 241, and a first side plate limiting portion 1242 that is matched with the first fixing member rotating shaft portion 2411 is provided on the long side left plate 12a. The hinged connection between the first cargo fixing member 241 and the long side left plate 12a is realized through the cooperation between the first fixing member rotating shaft portion 2411 and the first side plate limiting portion 1242. A second fixing member rotating shaft portion 2421 is provided at one end of the second cargo fixing member 242, and it cooperates with a first fixing member limiting portion 2412 provided at the other end of the first cargo fixing member 241 to hinge the second cargo fixing member 242 to the other end of the first cargo fixing member 241.

[0090] A fixing member inner sunken area 2413 is further provided on the first cargo fixing member 241. The second cargo fixing member 242 can be flipped into the fixing member inner sunken area 2413 through the hinged connection with the first cargo fixing member 241, so that the entire second cargo fixing member 243 is hidden within the thickness range of the first cargo fixing member 241. A side plate inner sunken area 1243 is provided on the long side left plate 12a. The first cargo fixing member 241 can be flipped into the side plate inner sunken area 1243 through the hinged connection with the long side left plate 12a, so that the entire first cargo fixing member 241 can be hidden within the thickness range of the side plate inner sunken area 1243, and further the entire cargo fixing device 2 can be hidden within the thickness range of the long side left plate.

[0091] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A turnover box, comprising a base and a plurality of pairs of side plates connected to the base, characterized in that: Also included is a cargo securing device, which has a first end and a second end opposite to each other, the first end of the cargo securing device being hingedly connected to the inner side of one of the pair of side panels, and the second end of the cargo securing device being provided with a retractable locking tongue, the locking tongue being used to cooperate and lock with a locking groove provided on the other side panel of the pair of side panels.

2. The turnover box according to claim 1, characterized in that: The cargo securing device further comprises a reset member, which acts on the locking tongue and generates a force for the locking tongue to maintain locking the locking groove.

3. The turnover box according to claim 1, characterized in that: The cargo fixing device comprises a cargo fixing piece, and the cargo fixing piece comprises a cargo fixing portion spanning across two opposite side plates, and a lever portion extending outside the box body of the turnover box.

4. The turnover box according to claim 1, characterized in that: A side panel sunken area is provided on the inner side surface of the side panel, and the cargo securing device is rotatably located in the side panel sunken area by being hingedly connected to the side panel.

5. The turnover box according to claim 4, characterized in that: The depth of the sunken area of ​​the side panel is not less than the thickness of the cargo securing device.

6. The turnover box according to claim 1, characterized in that: The cargo securing device comprises a cargo securing member, wherein the cargo securing member has a cavity which can be extended along the length direction thereof, the locking tongue can be slidably located in the cavity, and the locking tongue can be completely retracted in the cavity.

7. The turnover box according to claim 6, characterized in that: The cargo fixing piece is provided with a first fixing piece stopper, and the locking tongue is provided with a first locking tongue limiting portion. The first fixing piece stopper cooperates with the first locking tongue limiting portion to allow the locking tongue to remain retracted in the cavity.

8. The turnover box according to claim 6, characterized in that: The cargo fixing piece is provided with a fixing piece second stop portion, and the locking tongue is provided with a locking tongue second limiting portion, and the fixing piece second stop portion cooperates with the locking tongue second limiting portion to limit the length of the locking tongue extending from the cavity.

9. The turnover box according to claim 6, characterized in that: The cargo fixing member is provided with a reset member, and the reset member acts on the locking tongue, and the reset member generates a force on the locking tongue to make the locking tongue completely retracted into the cavity.

10. A turnover box, comprising a base and a plurality of pairs of side plates connected to the base, characterized in that: It also includes a cargo fixing device, which includes a first cargo fixing piece and a second cargo fixing piece, one end of the first cargo fixing piece is hingedly connected to the inner side of one of the pair of side panels, the other end of the first cargo fixing piece is hingedly connected to one end of the second cargo fixing piece, and the other pair of the second cargo fixing pieces is provided with a retractable locking tongue, which is used to cooperate and lock with a locking groove provided on the other side panel of the pair of side panels.

11. The turnover box according to claim 10, characterized in that: The first cargo securing member is provided with a securing member sunken area, and the second cargo securing member can be flipped into the securing member sunken area by being hingedly connected to the first cargo securing member.

12. The turnover box according to claim 11, characterized in that: The second cargo securing member can be concealed within a thickness of the first cargo securing member.

13. The turnover box according to claim 11 or 12, characterized in that: The side panel is provided with a side panel sunken area, and the first cargo fixing part can be flipped into the side panel sunken area through a hinged connection with the side panel, and the first cargo fixing part can be hidden within the thickness range of the side panel.

14. The turnover box according to claim 10, characterized in that: The cargo securing device further comprises a reset member, which acts on the locking tongue and generates a force for the locking tongue to maintain locking the locking groove.

15. A turnover box, comprising a base and a plurality of pairs of side plates connected to the base, characterized in that: It also includes a cargo fixing device, which includes a first cargo fixing part and a second cargo fixing part, the ends of the first cargo fixing part and the second cargo fixing part that are away from each other are respectively hingedly connected to the two opposite side panels, and the ends of the first cargo fixing part and the second cargo fixing part that are facing each other are respectively provided with a locking groove and a locking tongue, the locking tongue is telescopically connected to the second cargo fixing part, and the locking tongue is used to cooperate and lock with the locking groove of the first cargo fixing part provided therein.

16. The turnover box according to claim 15, characterized in that: The side panel hinged to the first cargo fixing part is provided with a first sunken area of ​​the side panel, and the first cargo fixing part can be flipped into the first sunken area of ​​the side panel through the hinged connection between the first cargo fixing part and the side panel; and / or the side panel hinged to the second cargo fixing part is provided with a second sunken area of ​​the side panel, and the second cargo fixing part can be flipped into the second sunken area of ​​the side panel through the hinged connection between the second cargo fixing part and the side panel.

17. The turnover box according to claim 16, characterized in that: The first cargo securing member can be hidden within the thickness of the side panel to which it is hingedly connected; and / or the second cargo securing member can be hidden within the thickness of the side panel to which it is hingedly connected.

18. The turnover box according to claim 16, characterized in that: The cargo securing device further comprises a reset member, which acts on the locking tongue and generates a force for the locking tongue to maintain locking the locking groove.

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