Locking device and folding container

Abstract

The utility model discloses a locking device and folding container, this locking device includes fixed block, mounting block, connecting shaft, screw rod and limit nut, mounting block sets up two, both opposite parallel arrangement, and both all are set up on connecting shaft, the one end of screw rod sets up the thimble, and the thimble sets up can rotatablely set up on connecting shaft, and is located between two mounting blocks, the other end of screw rod is provided with external thread, fixed block is not connected with mounting block, and is set up as can be close or away between both, fixed block is provided with recess, limit nut is provided with internal thread, and this internal thread is matched with the external thread of screw rod, screw rod sets up can pass through recess, limit nut sets up can limit screw rod in recess, and make fixed block and mounting block between close. This locking device is suitable for the locking between the side wall and the roof, the side wall and the chassis of folding container.

Description

Technical Field

[0001] This utility model relates to a locking device, and more particularly to a locking device for folding containers. It also relates to folding containers incorporating this locking device. Background Technology

[0002] Foldable containers are collapsible containers that are easy to transport and store, and are widely used in logistics, warehousing, and temporary accommodation. Their core advantages lie in saving space and transportation costs, making them particularly suitable for scenarios requiring frequent loading, unloading, and transportation. Foldable containers are typically made of high-strength steel or aluminum alloy, and are durable, waterproof, and fireproof. In terms of design, foldable containers achieve space compression by folding the side walls, end walls, and top. When transported empty, they can be stacked up to 10 layers high, significantly improving space utilization compared to traditional containers.

[0003] When unfolding or folding containers, it is necessary to consider the folding efficiency of folding containers as well as the rigidity and strength of the unfolded container. Among these considerations, the quick locking between the side walls and the bottom frame, and between the side walls and the top of the container in the unfolded state, as well as the quick disassembly of the locking devices when the container needs to be folded, are particularly important. Utility Model Content

[0004] In view of this, one object of the present invention is to provide a locking device that can be used for locking the sidewalls and bottom frame of a collapsible container, and for locking the sidewalls and top of the container. Another object of the present invention is to provide a collapsible container.

[0005] The present invention achieves the above objectives by adopting the following technical solution.

[0006] On the one hand, this utility model provides a locking device, including a fixing block, a mounting block, a connecting shaft, a screw, and a limiting nut;

[0007] The mounting block is configured as two blocks, which are arranged parallel to each other and both are sleeved on the connecting shaft;

[0008] One end of the screw is provided with a collar, which is configured to be rotatably fitted onto the connecting shaft and located between the two mounting blocks; the other end of the screw is provided with an external thread;

[0009] The fixing block and the mounting block are not connected, and are configured to be able to fit together or be far apart; the fixing block is provided with a groove.

[0010] The limiting nut has an internal thread that matches the external thread of the screw; the screw is configured to pass through the groove; the limiting nut is configured to confine the screw within the groove, thereby ensuring a close fit between the fixing block and the mounting block. This locking device is suitable for quick locking between the sidewalls and the top of folding containers, and quick locking between the sidewalls and the base frame. Furthermore, when folding the container, the locking device can be easily and quickly loosened to facilitate the folding of the sidewalls and top onto the base frame.

[0011] In this invention, the screw can be a fisheye screw. The limiting nut can be a wing nut or a swivel nut. The mounting block can be made of aluminum or steel. The fixing block is made of steel.

[0012] According to the locking device of this utility model, preferably, it further includes a first reinforcing plate and a second reinforcing plate; the first reinforcing plate is connected to one side of the fixing block; the second reinforcing plate is connected to one side of the mounting block; the second reinforcing plate and the first reinforcing plate are both located on the same side of the screw. This can enhance the rigidity and strength of the locking device, thereby ensuring the rigidity and strength of the folding container.

[0013] In this invention, the first reinforcing plate exists in one form, which is a rectangular flat plate structure. The second reinforcing plate exists in two forms: one is a rectangular flat plate structure, and the other is a plate structure with an L-shaped cross-section.

[0014] According to the locking device of this utility model, preferably, the first reinforcing plate is a rectangular flat plate structure; the second reinforcing plate has an L-shaped cross-section and is composed of a horizontal plate and a vertical plate connected vertically. The vertical plate is connected to the mounting block, and the horizontal plate is located below the fixing block and the first reinforcing plate. This can enhance the rigidity and strength of the container. According to one embodiment of this utility model, the second reinforcing plate is a reinforcing angle aluminum.

[0015] According to the locking device of this utility model, preferably, both the first reinforcing plate and the second reinforcing plate are rectangular flat plate structures.

[0016] According to the locking device of this utility model, preferably, the mounting block is configured as a cuboid structure; a circular hole is provided at the center of the mounting block, the circular hole being configured for the connecting shaft to pass through. This serves both to fix the mounting block and to install the screw.

[0017] According to the locking device of this utility model, preferably, a circular annular washer is provided inside the circular hole; the circular annular washer is configured to fit against the connecting shaft. This allows the connecting shaft to be securely fastened to the mounting block.

[0018] According to the locking device of the present invention, preferably, it further includes a positioning nut, which is configured to be sleeved on the end of the connecting shaft for limiting the position of the mounting block.

[0019] According to the locking device of this utility model, preferably, the limiting nut is a wing nut.

[0020] On the other hand, the present invention also provides a folding container, which includes the locking device as described above; in the unfolded state of the container, the locking device is configured to lock the side wall to the top of the container and to lock the side wall to the base frame.

[0021] When the locking device locks the side wall and the top of the box, the fixing block is configured to be connected to the side beam of the top of the box, and the mounting block is configured to be connected to the cross beam on the side wall;

[0022] When the locking device locks the side wall and the base frame together, the fixing block is connected to the lower crossbeam of the side wall, and the mounting block is connected to the side beam of the base frame.

[0023] This utility model also provides a folding container, which includes the locking device as described above; in the unfolded state of the container, the locking device is configured to lock the side wall to the top of the container and to lock the side wall to the base frame.

[0024] When the locking device locks the side wall and the top of the box, the first reinforcing plate is connected to the side beam of the top of the box, and the second reinforcing plate is connected to the cross beam on the side wall.

[0025] When the locking device locks the side wall and the base frame together, the first reinforcing plate is connected to the lower crossbeam of the side wall, and the second reinforcing plate is connected to the side beam of the base frame.

[0026] The present invention preferably employs a locking device comprising a first reinforcing plate and a second reinforcing plate.

[0027] The locking device of this invention can be used for locking the side walls and top of folding containers, and between the side walls and the base frame. This locking device also facilitates quick and easy opening, thus improving folding efficiency. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a locking device according to the present invention.

[0029] Figure 2 This is a schematic diagram of another locking device according to the present invention.

[0030] Figure 3 This is a schematic diagram of the connection between a fixing block and a first reinforcing plate according to the present invention.

[0031] Figure 4 This is a schematic diagram showing the connection between the mounting block of this utility model and a type of second reinforcing plate (reinforcing plate A). Figure 2 (Partial schematic diagram).

[0032] Figure 5 This is a structural schematic diagram of another locking device according to the present invention.

[0033] Figure 6 for Figure 5 A partial schematic diagram.

[0034] Figure 7 This is a schematic diagram of another locking device of this utility model used for locking between the side wall and the top of the box.

[0035] Figure 8 This is a schematic diagram of another locking device of this utility model used for locking between the side wall and the base frame.

[0036] The annotations in the attached figures are explained as follows:

[0037] 311-Fixing block, 3111-Groove, 312-Mounting block, 313-Screw, 314-Limit nut, 315-Connecting shaft, 316-First reinforcing plate, 3171-Reinforcing plate A, 3172-Reinforcing plate B;

[0038] 100 - Top side beam of the box girder, 301 - Horizontal beam on the side wall, 302 - Lower horizontal beam of the side wall, 201 - Side beam of the base frame. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0040] Example 1 - Locking Device

[0041] Figure 1 This is a structural schematic diagram of a locking device according to the present invention. Figure 1 As shown, the locking device of this utility model includes a fixing block 311, a mounting block 312, a screw 313, a limiting nut 314, and a connecting shaft 315.

[0042] Two mounting blocks 312 are arranged parallel to each other and both are fitted onto the connecting shaft 315. The mounting blocks 312 have a cuboid structure. A circular hole is provided in the center of each mounting block 312 for the connecting shaft 315 to pass through. A circular annular washer is provided inside the circular hole. The circular washer fits snugly against the connecting shaft 315.

[0043] One end of the connecting shaft 315 is a fixed end, and the other end is a free end, which is threaded. A positioning nut is provided on the free end of the connecting shaft 315 to limit the position of the mounting block 312.

[0044] One end of the screw 313 is provided with a collar, which can be rotatably fitted onto the connecting shaft 315 and is located between the two mounting blocks 312. The other end of the screw 313 is provided with an external thread.

[0045] The fixing block 311 and the mounting block 312 are not connected, but can be fitted together or moved apart. The fixing block 311 is provided with a groove 3111. The fixing block 311 includes a fixing block body, the outer contour of which is similar to a cuboid structure.

[0046] The limiting nut 314 is provided with an internal thread that matches the external thread of the screw 313. The screw 313 can pass through the groove 3111. The limiting nut 314 can limit the screw 313 within the groove 3111 and make the fixing block 311 and the mounting block 312 fit together.

[0047] The groove 3111 includes a first groove and a second groove. The first groove has three openings: openings at both ends and a middle opening. The cross-section of the openings at both ends is U-shaped. The cross-section of the middle opening is rectangular. The second groove is located at one end of the first groove (i.e., formed based on the first groove). The cross-section of the second groove is circular, and the diameter of the second groove is larger than the diameter of the arc of the first groove. The second groove is used for screwing in the limiting nut 314. The limiting nut 314 is a wing nut.

[0048] Example 2 - Foldable Container

[0049] The collapsible container of this embodiment includes the locking device described in Embodiment 1, which is used to lock the side wall to the top of the container and to lock the side wall to the base frame.

[0050] refer to Figure 7 ,Will Figure 7 The locking device in the original document is replaced with the locking device of Example 1. Locking between the side wall and the container top: The side of the fixing block 311 away from the central opening of the groove 3111 is connected to the side beam 100 of the container top and can be welded together. The corresponding side of the mounting block 312 is connected to the crossbeam 301 on the side wall and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall and the container top. Multiple locking devices can be provided for locking between the side wall and the container top.

[0051] refer to Figure 8 ,Will Figure 8 The locking device in the original document is replaced with the locking device of Example 1. Locking between the side wall and the base frame: The side of the fixing block 311 away from the central opening of the groove 3111 is connected to the lower crossbeam 302 of the side wall and can be welded together. The corresponding side of the mounting block 312 is connected to the side beam 201 of the base frame and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall and the base frame. Multiple locking devices can be provided for locking between the side wall and the base frame.

[0052] When folding the container, first loosen the limit nut 314 so that the screw 313 leaves the groove 3111 and the fixing block 311 and the mounting block 312 gradually move away from each other. Then fold the side walls and the top of the container onto the base frame.

[0053] Example 3 - Locking Device

[0054] Figure 2 This is a schematic diagram of another locking device according to the present invention. Figure 3 This is a schematic diagram of the connection between a fixing block and a first reinforcing plate according to the present invention. Figure 4 This is a schematic diagram showing the connection between the mounting block and a second reinforcing plate (reinforcing plate A).

[0055] like Figures 2 to 4 As shown, the locking device of this utility model includes a fixing block 311, a mounting block 312, a screw 313, a limiting nut 314, a connecting shaft 315, a first reinforcing plate 316, and a second reinforcing plate. The second reinforcing plate is an L-shaped reinforcing plate A3171. The first reinforcing plate 316 is a rectangular flat plate structure.

[0056] Two mounting blocks 312 are arranged parallel to each other and both are fitted onto the connecting shaft 315. The mounting blocks 312 have a cuboid structure. A circular hole is provided in the center of each mounting block 312, through which the connecting shaft 315 passes. A circular annular washer is provided inside the circular hole. The circular annular washer fits snugly against the connecting shaft 315.

[0057] One end of the connecting shaft 315 is a fixed end, and the other end is a free end, which is threaded. A positioning nut is provided on the free end of the connecting shaft 315 to limit the position of the mounting block 312.

[0058] One end of the screw 313 is provided with a collar, which can be rotatably fitted onto the connecting shaft 315 and is located between the two mounting blocks 312. The other end of the screw 313 is provided with an external thread.

[0059] The fixing block 311 and the mounting block 312 are not connected, but can be fitted together or moved apart. The fixing block 311 is provided with a groove 3111. The fixing block 311 includes a fixing block body, the outer contour of which is similar to a cuboid structure.

[0060] The groove 3111 includes a first groove and a second groove. The first groove has three openings: openings at both ends and a middle opening. The cross-section of the openings at both ends is U-shaped. The cross-section of the middle opening is rectangular. The second groove is located at one end of the first groove (i.e., formed based on the first groove). The cross-section of the second groove is circular, and the diameter of the second groove is larger than the diameter of the arc of the first groove. The second groove allows the limiting nut 314 to be screwed into.

[0061] The limiting nut 314 has an internal thread that matches the external thread of the screw 313. The screw 313 can pass through the groove 3111. The limiting nut 314 can confine the screw 313 within the groove 3111 and cause the fixing block 311 and the mounting block 312 to fit together. The limiting nut 314 is a wing nut.

[0062] The first reinforcing plate 316 is connected to one side of the fixing block 311 (i.e., the side opposite to the middle opening of the first groove). The second reinforcing plate is connected to one side of the mounting block 312. The second reinforcing plate and the first reinforcing plate 316 are both located on the same side of the screw 313. When the cross-section of the second reinforcing plate is L-shaped (i.e., reinforcing plate A3171), it consists of a horizontal plate and a vertical plate connected vertically. The vertical plate is connected to the mounting block 312, and the horizontal plate is located below the first reinforcing plate 316.

[0063] Example 4 - Locking Device

[0064] Except for the following settings, the rest of the structure is the same as the locking device in Example 3:

[0065] like Figure 5 and Figure 6 As shown, the structure of the second reinforcing plate is different. In this embodiment, the second reinforcing plate is a rectangular flat plate B 3172.

[0066] The reinforcing plate B 3172 is connected to the corresponding side of the mounting block 312.

[0067] Example 5 - Foldable Container

[0068] This embodiment provides a folding container, which includes the locking device described in Embodiment 3 and the locking device described in Embodiment 4. For example... Figure 7 and Figure 8As shown, in the unfolded state of the container, the locking device described in Example 3 is used to lock the side wall to the top of the container, and the locking device described in Example 4 is used to lock the side wall to the base frame.

[0069] Specifically, such as Figure 7 As shown, in the locking device of Embodiment 3, the side of the first reinforcing plate 316 away from the fixing block 311 is connected to the side beam 100 of the container top and can be welded together. The second reinforcing plate (i.e., reinforcing plate A3171) is connected to the cross beam 301 on the side wall and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall and the container top. Multiple locking devices for locking the side wall and the container top can be provided.

[0070] like Figure 8 As shown, in the locking device of Embodiment 4, the side of the first reinforcing plate 316 away from the fixing block 311 is connected to the lower crossbeam 302 of the side wall and can be welded together. The side of the second reinforcing plate (i.e., reinforcing plate B 3172) away from the mounting block is connected to the side beam 201 of the base frame and can be welded together. In the unfolded state of the container, the screw 313 is turned into the groove 3111, and then the limiting nut 314 is used to limit the screw 313 within the groove 3111. At this time, the fixing block 311 and the mounting block 312 are in contact, thereby locking the side wall and the base frame. Multiple locking devices for locking the side wall and the base frame can be provided.

[0071] When folding the container, first loosen the limit nut 314 so that the screw 313 leaves the groove 3111 and the fixing block 311 and the mounting block 312 gradually move away from each other. Then fold the side walls and the top of the container onto the base frame.

[0072] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model shall fall within the scope of this utility model.

Claims

1. A locking device, characterized in that, Includes a fixing block, mounting block, connecting shaft, screw, and limit nut; The mounting block is configured as two blocks, which are arranged parallel to each other and both are sleeved on the connecting shaft; One end of the screw is provided with a collar, which is configured to be rotatably fitted onto the connecting shaft and located between the two mounting blocks; the other end of the screw is provided with an external thread; The fixing block and the mounting block are not connected, and are configured to be able to fit together or be far apart; the fixing block is provided with a groove. The limiting nut is provided with an internal thread that matches the external thread of the screw; the screw is configured to pass through the groove; the limiting nut is configured to confine the screw within the groove and to allow the fixing block and the mounting block to fit together.

2. The locking device according to claim 1, characterized in that, It also includes a first reinforcing plate and a second reinforcing plate; the first reinforcing plate is connected to one side of the fixing block; the second reinforcing plate is connected to one side of the mounting block; the second reinforcing plate and the first reinforcing plate are both located on the same side of the screw.

3. The locking device according to claim 2, characterized in that, The first reinforcing plate is a rectangular flat plate structure; the second reinforcing plate has an L-shaped cross section and is composed of a horizontal plate and a vertical plate connected vertically. The vertical plate is connected to the mounting block, and the horizontal plate is located below the fixing block and the first reinforcing plate.

4. The locking device according to claim 2, characterized in that, Both the first reinforcing plate and the second reinforcing plate are rectangular flat plate structures.

5. The locking device according to claim 1 or 2, characterized in that, The mounting block is configured as a cuboid structure; a circular hole is provided in the center of the mounting block, and the circular hole is configured to allow the connecting shaft to pass through.

6. The locking device according to claim 5, characterized in that, A circular annular gasket is provided inside the circular hole; the circular annular gasket is configured to fit snugly against the connecting shaft.

7. The locking device according to claim 1 or 2, characterized in that, It also includes a positioning nut, which is configured to be sleeved on the end of the connecting shaft to limit the position of the mounting block.

8. The locking device according to claim 1 or 2, characterized in that, The limiting nut is a wing nut.

9. A foldable container, characterized in that, It includes the locking device as described in claim 1; in the unfolded state of the container, the locking device is configured to lock the side wall to the top of the container and to lock the side wall to the base frame; When the locking device locks the side wall and the top of the box, the fixing block is configured to be connected to the side beam of the top of the box, and the mounting block is configured to be connected to the cross beam on the side wall; When the locking device locks the side wall and the base frame together, the fixing block is connected to the lower crossbeam of the side wall, and the mounting block is connected to the side beam of the base frame.

10. A folding container, characterized in that, It includes the locking device as described in claim 2; in the unfolded state of the container, the locking device is configured to lock the side wall to the top of the container and to lock the side wall to the base frame; When the locking device locks the side wall and the top of the box, the first reinforcing plate is connected to the side beam of the top of the box, and the second reinforcing plate is connected to the cross beam on the side wall. When the locking device locks the side wall and the base frame together, the first reinforcing plate is connected to the lower crossbeam of the side wall, and the second reinforcing plate is connected to the side beam of the base frame.

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