Locking device for a folding container and folding container

Abstract

The utility model discloses a locking device and folding container for folding container. The locking device includes fixed plate and fixed pin, the fixed plate includes fixed plate body and arc stop sheet, the fixed plate body is provided with round hole along its thickness direction, the top of round hole is provided with recess in the using state, the arc stop sheet is located below the round hole and is arranged on the fixed plate body, the fixed pin includes fixed pin body, stop bulge and pin ring, the fixed pin body is matched with round hole and is arranged to be able to insert the round hole, the stop bulge is arranged on the fixed pin body, and the stop bulge is matched with recess, the pin ring is matched with arc stop sheet, when the stop bulge is embedded recess, the pin ring is arranged to be able to buckle the periphery of arc stop sheet. The locking device is suitable for locking between the top of folding container and front end (or door end).

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] In actual container transportation, empty containers are sometimes returned, resulting in unnecessary economic expenditures. Therefore, using foldable containers has positive implications. When goods need to be transported, they can be unfolded to form a container that can be loaded with cargo; when goods are not needed, the containers can be folded and stacked, saving space.

[0003] Because of the folding of the side walls, front end, doors, and top of the container, it is necessary to consider the folding efficiency of the folding container as well as the rigidity and strength of the container after unfolding. Among these considerations, the quick locking of the top and front end (or doors) in the unfolded state, and the quick disassembly of the locking device when the container needs to be folded, require special attention. Utility Model Content

[0004] In view of this, one object of the present invention is to provide a locking device for a folding container, which can quickly lock the top of the container to the front end (or door end) and can be quickly disassembled when the container needs to be folded. Another object of the present invention is to provide a folding 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 for folding containers, including a fixing plate and a fixing pin;

[0007] The fixing plate includes a fixing plate body and an arc-shaped stop piece; the fixing plate body has a circular hole along its thickness direction; in use, a groove is provided at the top of the circular hole, the opening of the groove faces the circular hole, and the groove and the circular hole are connected; the arc-shaped stop piece is provided on the fixing plate body and is located below the circular hole.

[0008] The fixing pin includes a fixing pin body, a stop protrusion, and a pin ring; the fixing pin body matches the circular hole and is configured to be inserted into the circular hole; the stop protrusion is disposed on the fixing pin body and matches the groove;

[0009] The pin ring matches the arc-shaped stop piece; when the stop protrusion is inserted into the groove, the pin ring is configured to fasten around the arc-shaped stop piece. This locking device facilitates quick locking of the container top, front end, and door end in the unfolded state, and allows for quick disassembly when the container needs to be folded.

[0010] In this invention, the fixing plate body is vertically connected to the top corner piece of the container and can be welded together. Taking the locking of the front end and the top of the container as an example, the front vertical beam is provided with a front vertical beam pin hole. The fixing pin is inserted into the circular hole and the front vertical beam pin hole in sequence, so that the stop protrusion is embedded in the groove, and the pin ring is fastened to the outer periphery of the arc-shaped stop piece, thereby locking the top of the container to the front end.

[0011] In this invention, the arc-shaped stop piece is arc-shaped. The groove has three openings: openings at both ends and a middle opening. The opening facing the circular hole refers to the middle opening (or groove). The line connecting the center points of the openings at both ends is parallel to the central axis of the circular hole.

[0012] According to the locking device for folding containers described in this utility model, preferably, the cross-section of the fixing plate body is rectangular, trapezoidal, or triangular, and this cross-section is perpendicular to the thickness direction of the fixing plate body. This facilitates manufacturing and ensures rigidity and strength.

[0013] According to a specific embodiment of the present invention, the cross-section of the fixing plate body is rectangular, that is, the fixing plate body has a cuboid structure.

[0014] According to the locking device for folding containers described in this utility model, preferably, the width direction of the arc-shaped stop piece is the same as the thickness direction of the fixing plate body. This facilitates the pin ring to engage the arc-shaped stop piece.

[0015] According to the locking device for folding containers described in this utility model, preferably, the arc center of the arc-shaped stop plate is close to the central axis of the circular hole.

[0016] According to the locking device for folding containers described in this utility model, preferably, the length of the line connecting the center points of the two ends of the arc-shaped stop plate is greater than or equal to the diameter of the circular hole.

[0017] According to the locking device for folding containers described in this utility model, preferably, the fixing pin body is configured as a cylindrical structure. This facilitates operation.

[0018] According to the locking device for folding containers described in this utility model, preferably, the fixing pin body includes a first body and a second body connected together; the length of the first body is greater than the length of the second body, and the diameter of the first body is smaller than the diameter of the second body. The second body is the end of the fixing pin body.

[0019] According to the locking device for folding containers described in this utility model, preferably, the stop protrusion is disposed on the first body.

[0020] According to one embodiment of the present invention, the stop protrusion has a square structure that matches the groove.

[0021] According to the locking device for folding containers described in this utility model, preferably, the pin ring is movably disposed on the second body.

[0022] On the other hand, this utility model also provides a folding container, which includes the locking device as described above; in the unfolded state of the container, the fixing plate is vertically connected to the top corner piece of the folding container, and the circular hole is located below the top corner piece. The fixing plate and the top corner piece can be welded together.

[0023] This invention relates to a locking device for folding containers, which can be used to quickly lock the top, front end, and door of the container. When the container needs to be folded, the locking device is easy to disassemble and reassemble, improving folding efficiency. The locking device also helps to ensure the rigidity and strength of the folding container. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the fixing plate of the locking device of this utility model.

[0025] Figure 2 This is a schematic diagram of the fixing pin of the locking device of this utility model.

[0026] Figure 3 This is a schematic diagram of the locking device for folding containers of this utility model in use.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1-Fixing plate, 11-Fixing plate body, 12-Arc-shaped stop piece, 111-Circular hole, 112-Groove;

[0029] 2-Fixing pin, 21-Fixing pin body, 22-Stopping protrusion, 23-Pin ring;

[0030] 130 - Top corner piece, 530 - Front vertical beam, 531 - Front vertical beam pin hole. Detailed Implementation

[0031] 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.

[0032] Example 1

[0033] Figure 1 This is a schematic diagram of the structure of the fixing plate of the locking device of this utility model. Figure 2 This is a schematic diagram of the fixing pin of the locking device of this utility model. Figure 3 This is a schematic diagram of the locking device for folding containers of this utility model in use.

[0034] like Figures 1 to 3 As shown, a locking device for a folding container according to the present invention includes a fixing plate 1 and a fixing pin 2.

[0035] like Figure 1 As shown, the fixing plate 1 includes a fixing plate body 11 and an arc-shaped stop piece 12.

[0036] In this embodiment, the fixing plate body 11 is a rectangular flat plate structure. The fixing plate body 11 has a circular hole 111 along its thickness direction. When the length direction of the fixing plate body 11 is the same as the vertical direction (i.e., in the use state), a groove 112 is provided on the top of the circular hole 111, the opening direction of the groove 112 faces the circular hole 111, and the groove 112 and the circular hole 111 are connected.

[0037] An arc-shaped stop piece 12 is disposed on the fixing plate body 11 and located below the circular hole 111. The width direction of the arc-shaped stop piece 12 is consistent with the thickness direction of the fixing plate body 11. The center of the arc of the arc-shaped stop piece 12 is close to the central axis of the circular hole 111. The length of the line connecting the center points of the two ends of the arc-shaped stop piece 12 is greater than or equal to the diameter of the circular hole 111.

[0038] like Figure 2 As shown, the fixing pin 2 includes a fixing pin body 21, a stop protrusion 22, and a pin ring 23. The fixing pin body 21 matches the circular hole 111 and can be inserted into the circular hole 111. The stop protrusion 22 is provided on the fixing pin body 21 and matches the groove 112. The stop protrusion 22 has a small square structure. The pin ring 23 matches the arc-shaped stop piece 12; when the stop protrusion 12 is inserted into the groove 112, the pin ring 23 can be fastened to the outer periphery of the arc-shaped stop piece 12.

[0039] The fixing pin body 21 is a cylindrical structure. The fixing pin body 21 includes a first body and a second body connected together. The length of the first body is greater than the length of the second body. The diameter of the first body is smaller than the diameter of the second body. A stop protrusion 22 is provided on the first body and close to the second body. A pin ring 23 is movably disposed on the second body. Both ends of the pin ring 23 are rotatably connected to the two sides of the second body. The pin ring 23 is rotatable, and the axis of rotation is the line connecting the two free ends of the pin ring 23, which passes through the central axis of the second body (the two ends are perpendicular).

[0040] This locking device facilitates quick locking between the top of the box and the front end (or door end).

[0041] Example 2

[0042] Figure 1 This is a schematic diagram of the structure of the fixing plate of the locking device of this utility model. Figure 2 This is a schematic diagram of the fixing pin of the locking device of this utility model. Figure 3 This is a schematic diagram of the locking device for folding containers of this utility model in use.

[0043] like Figures 1 to 3 As shown, a locking device for a folding container according to the present invention includes a fixing plate 1 and a fixing pin 2.

[0044] like Figure 1 As shown, the fixing plate 1 includes a fixing plate body 11 and an arc-shaped stop piece 12.

[0045] In this embodiment, the fixing plate body 11 is a flat plate structure in the shape of an isosceles trapezoid. The fixing plate body 11 has a circular hole 111 along its thickness direction. When the height direction of the isosceles trapezoid is the same as the vertical direction (i.e., in the use state), a groove 112 is provided at the top of the circular hole 111, the opening direction of the groove 112 faces the circular hole 111, and the groove 112 and the circular hole 111 are connected.

[0046] An arc-shaped stop piece 12 is disposed on the fixing plate body 11 and located below the circular hole 111. The width direction of the arc-shaped stop piece 12 is consistent with the thickness direction of the fixing plate body 11. The center of the arc of the arc-shaped stop piece 12 is close to the central axis of the circular hole 111. The length of the line connecting the center points of the two ends of the arc-shaped stop piece 12 is greater than or equal to the diameter of the circular hole 111.

[0047] like Figure 2As shown, the fixing pin 2 includes a fixing pin body 21, a stop protrusion 22, and a pin ring 23. The fixing pin body 21 matches the circular hole 111 and can be inserted into the circular hole 111. The stop protrusion 22 is provided on the fixing pin body 21 and matches the groove 112. The stop protrusion 22 has a small square structure. The pin ring 23 matches the arc-shaped stop piece 12; when the stop protrusion 12 is inserted into the groove 112, the pin ring 23 can be fastened to the outer periphery of the arc-shaped stop piece 12.

[0048] The fixing pin body 21 is a cylindrical structure. The fixing pin body 21 includes a first body and a second body connected together. The length of the first body is greater than the length of the second body. The diameter of the first body is smaller than the diameter of the second body. A stop protrusion 22 is provided on the first body and close to the second body. A pin ring 23 is movably disposed on the second body. Both ends of the pin ring 23 are rotatably connected to the two sides of the second body. The pin ring 23 is rotatable, and the axis of rotation is the line connecting the two free ends of the pin ring 23, which passes through the central axis of the second body (the two ends are perpendicular).

[0049] This locking device facilitates quick locking between the top of the box and the front end (or door end).

[0050] Example 3

[0051] This embodiment provides a collapsible container, which includes the locking device described in Embodiment 1. The collapsible container has a front end and a door end arranged relatively parallel to each other, a top, and four corner pieces 130. Detailed connection methods and structures can be found in materials known in the art and will not be elaborated here. A total of four locking devices as described in Embodiment 1 are used in one collapsible container. Figure 3 As shown, taking the front end as an example, the front end has a front vertical beam 530, and a front vertical beam pin hole 531 is provided on the front vertical beam 530.

[0052] In use, the locking device's fixing plate 11 is vertically connected to the top corner piece 130 of the folding container and can be welded together. The circular hole 111 is located below the top corner piece 130. The fixing pin body 21 is inserted sequentially into the circular hole 111 of the fixing plate 1 and the front vertical beam pin hole 531, the stop protrusion 22 is embedded in the groove 112, and the pin ring 23 is fastened to the outer periphery of the arc-shaped stop piece 12. This allows for quick locking between the top of the container and the front end (or door end) when the container is unfolded. Furthermore, this locking device is easy to disassemble and reassemble when the container needs to be folded.

[0053] Example 4

[0054] This embodiment provides a collapsible container, which includes the locking device described in Embodiment 2. The collapsible container has a front end and a door end arranged relatively parallel to each other, a top, and four corner pieces 130. Detailed connection methods and structures can be found in what is known in the art and will not be elaborated here. A total of four locking devices as described in Embodiment 2 are used in one collapsible container. Figure 3 As shown, taking the front end as an example, the front end has a front vertical beam 530, and a front vertical beam pin hole 531 is provided on the front vertical beam 530.

[0055] In use, the locking device's fixing plate 11 is vertically connected to the top corner piece 130 of the folding container and can be welded together. The circular hole 111 is located below the top corner piece 130. The fixing pin body 21 is inserted sequentially into the circular hole 111 of the fixing plate 1 and the front vertical beam pin hole 531, the stop protrusion 22 is embedded in the groove 112, and the pin ring 23 is fastened to the outer periphery of the arc-shaped stop piece 12. This allows for quick locking between the top of the container and the front end (or door end) when the container is unfolded. Furthermore, this locking device is easy to disassemble and reassemble when the container needs to be folded.

[0056] 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 fall within the scope of this utility model.

Claims

1. A locking device for a collapsible container, characterized in that, Includes a fixing plate and fixing pins; The fixing plate includes a fixing plate body and an arc-shaped stop piece; the fixing plate body has a circular hole along its thickness direction; in use, a groove is provided at the top of the circular hole, the opening of the groove faces the circular hole, and the groove and the circular hole are connected; the arc-shaped stop piece is provided on the fixing plate body and is located below the circular hole. The fixing pin includes a fixing pin body, a stop protrusion, and a pin ring; the fixing pin body matches the circular hole and is configured to be inserted into the circular hole; the stop protrusion is disposed on the fixing pin body and matches the groove; The pin ring matches the arc-shaped stop piece; when the stop protrusion is embedded in the groove, the pin ring is configured to be able to fasten to the periphery of the arc-shaped stop piece.

2. The locking device for a folding container according to claim 1, characterized in that, The cross-section of the fixing plate body is rectangular, trapezoidal, or triangular, and the cross-section is perpendicular to the thickness direction of the fixing plate body.

3. The locking device for a folding container according to claim 1, characterized in that, The width direction of the arc-shaped stop piece is the same as the thickness direction of the fixed plate body.

4. The locking device for a folding container according to claim 1, characterized in that, The center of the arc-shaped stop piece is close to the central axis of the circular hole.

5. The locking device for a folding container according to claim 1, characterized in that, The length of the line connecting the center points of the two ends of the arc-shaped stop piece is greater than or equal to the diameter of the circular hole.

6. The locking device for a folding container according to claim 1, characterized in that, The fixing pin body is configured as a cylindrical structure.

7. The locking device for a folding container according to claim 6, characterized in that, The fixing pin body includes a first body and a second body connected together; the length of the first body is greater than the length of the second body, and the diameter of the first body is smaller than the diameter of the second body.

8. The locking device for a collapsible container according to claim 7, characterized in that, The stop protrusion is provided on the first body.

9. The locking device for a folding container according to claim 7, characterized in that, The pin ring is movably disposed on the second body.

10. A folding container, characterized in that, It includes the locking device according to any one of claims 1 to 9; in the unfolded state of the container, the fixing plate is perpendicularly connected to the top corner piece of the folding container, and the circular hole is located below the top corner piece.

Images