Corner column locking device and folding container

Abstract

The utility model discloses a corner post locking device, which comprises a fixed seat, a fixed seat, a locking device and a locking device, and is characterized in that the fixed seat comprises two side plates which are parallel to each other and are arranged at intervals; an inner hinge and a first locking structure are arranged between the two side plates, a lock hook is arranged on one side of the inner hinge, the first locking structure comprises a first rotating piece, a spring piece and a lock rod, the inner hinge and the first rotating piece are both hinged to the side plates, rotating shafts of the inner hinge and the first rotating piece are both perpendicular to the side plates, and a mounting position is arranged at one end of the first rotating piece. The lock rod can vertically move on the mounting position, the lock rod and the lock hook are oppositely arranged, the spring piece is arranged on the side away from the lock hook, one end of the spring piece is fixedly connected with the first rotating part, the other end of the spring piece bends upwards and outwards towards the side away from the first rotating part, and the tail end of the spring piece is located outside the orthographic projection range of the first rotating part; when the lock hook and the lock rod rotate oppositely, the lock hook and the lock rod are buckled, the inner hinge is locked, and when the lock hook and the lock rod rotate oppositely, the inner hinge continuously rotates to enable the lock hook and the lock rod to be separated, and the inner hinge is unlocked.

Description

Technical Field

[0001] This utility model relates to the field of folding container technology, and in particular to a corner post locking device and a folding container. Background Technology

[0002] Foldable containers, as a new type of transportation equipment, are mainly composed of end frames and a base frame. The foldable end frames are hinged to the base frame via a hinge mechanism. When the container needs to be used, the end frames must be switched from a folded to an open state. After the end frames are successfully erected, they must be locked manually using pins in the hinge mechanism to ensure their stability. The hinge mechanism generally includes a movable hinge fixed to the lower end of the end frame and fixed seats fixed to both sides of the end of the base frame. The movable hinge is hinged to the fixed seats via a pin, allowing the container's end frames to rotate between the folded position on the base frame and the vertically open position. When the container's end frames are in the open position, the operator inserts the pins from the inside of the fixed hinge into the corresponding holes or notches in the movable hinge and fixed seats, fixing the movable hinge to the fixed hinge. This prevents the end frames from rotating from the open position to the folded position under external force. Conversely, when the container end rack needs to be switched from the open position back to the folded position, the operator needs to pull out the latch from the corresponding position in advance to create conditions for the smooth rotation of the end rack.

[0003] However, in actual operation, operators may fail to insert the latches correctly due to negligence, fatigue, or other reasons. Furthermore, because the latches are located inside the mounting bracket, their position is relatively concealed, making it difficult for operators to promptly detect if they are not properly inserted during routine operations. This can potentially lead to serious safety accidents such as accidental tipping of the end frame or cargo falling when operating collapsible containers, posing a potential threat to the safety of personnel and goods. Utility Model Content

[0004] This utility model provides a corner post locking device to solve the technical problem that movable hinges and fixed seats are usually fixed with pins, which can easily cause installation hazards when the pins are not inserted into the correct position.

[0005] To solve the above-mentioned technical problems, this utility model provides a corner post locking device, comprising:

[0006] The mounting base includes two side plates, which are parallel and spaced apart.

[0007] An inner hinge is located between the two side plates. The inner hinge is hinged to the side plates. The rotation axis of the inner hinge is perpendicular to the side plates. A locking hook is provided on one side of the inner hinge.

[0008] A first locking structure is located between the locking hook and the two side plates. The first locking structure includes a first rotating member, a spring plate, and a locking rod. The first rotating member is hinged to the side plates. The rotation axis of the first rotating member is perpendicular to the side plates. One end of the first rotating member is provided with a mounting position for mounting the locking rod. The locking rod can move vertically at the mounting position. The locking rod is arranged facing the locking hook. The spring plate is arranged on the side away from the locking hook. One end of the spring plate is fixedly connected to the first rotating member, and the other end is bent upward and outward away from the first rotating member, with its end located outside the range of the first rotating member's orthographic projection.

[0009] When the locking hook and the locking rod rotate towards each other, the inner hinge continues to rotate, causing the locking hook to lift the locking rod. The locking rod falls back under the action of gravity, causing the locking hook and the locking rod to engage, and the inner hinge is locked. When the locking hook and the locking rod rotate in opposite directions, the inner hinge continues to rotate, causing the locking hook to disengage from the locking rod, and the inner hinge is unlocked. When the first rotating member rotates to its maximum rotation distance, the spring plate abuts against and is squeezed against the inner wall of the fixed seat. When the first rotating member is released, the spring plate returns to its original position, keeping the first rotating member in an upright state.

[0010] Furthermore, a fixing plate is provided on the side of the first rotating member away from the locking hook, one end of the spring sheet is fixedly connected to the fixing plate, and the other end of the spring sheet is provided with a return bend, which bends back towards the first rotating member.

[0011] Furthermore, the locking rod includes a first connecting portion and a second connecting portion connected to both ends of the first connecting portion. The thickness of the first connecting portion is greater than the thickness of the second connecting portion. The second connecting portion is connected to the first rotating member. The first connecting portion is used to cooperate with the locking hook. When the second connecting portion is installed on the first rotating member, it restricts the horizontal movement of the first connecting portion.

[0012] Furthermore, the mounting position is a mounting hole, the height of which is greater than the thickness of the second connecting part and less than the thickness of the first connecting part, so that the second connecting part can move up and down relative to the first rotating member.

[0013] Furthermore, a limiting block is provided on the inner side of the side plate. When the locking hook is engaged with the locking rod, the locking hook abuts against the lower surface of the locking rod, the limiting block is located above the locking rod, and when the first rotating member rotates, the limiting block is located on the rotation trajectory of the upper surface of the locking rod.

[0014] Furthermore, the other end of the first rotating member is provided with a pedal, which is used for foot control to rotate the first rotating member away from the locking hook.

[0015] This utility model embodiment also provides a corner post locking device, including:

[0016] The mounting base includes two side plates, which are parallel and spaced apart.

[0017] An inner hinge is located between the two side plates. The inner hinge is hinged to the side plates. The rotation axis of the inner hinge is perpendicular to the side plates. A first locking hook is provided at the bottom of the inner hinge.

[0018] The second locking structure is located between the locking hook and the two side plates. The second locking structure includes a mounting base fixedly connected to the side plates, a second rotating member rotatably connected to the mounting base, and an elastic member. The rotation axis of the second rotating member is perpendicular to the side plates. One end of the second rotating member is provided with a second locking hook. One end of the elastic member is fixedly connected to the other end of the second rotating member, and the other end of the elastic member is fixedly connected to the inner wall of the mounting base.

[0019] When the first locking hook moves toward the second locking hook, the inner hinge continues to rotate, causing the first locking hook to push the second rotating member to rotate away from the inner hinge, and the elastic member is compressed until the first locking hook enters the second locking hook. Under the action of the elastic member, the second locking hook rotates toward the first locking hook, thereby engaging the first locking hook and the second locking hook to lock the inner hinge. When the first locking hook moves away from the second locking hook, the first locking hook pushes the second rotating member to rotate away from the inner hinge, and the elastic member is compressed until the first locking hook disengages from the second locking hook to unlock the inner hinge.

[0020] Furthermore, a wrench is provided on the side of the second rotating member near the second locking hook, and a first limiting hole is provided on one side of the mounting base for the wrench to pass through. The side plate is provided with a second limiting hole corresponding to the first limiting hole. The height of the first limiting hole and the second limiting hole is greater than the diameter of the wrench. The wrench protrudes from the surface of the side plate through the first limiting hole and the second limiting hole and moves up and down within the first limiting hole and the second limiting hole.

[0021] Furthermore, the first locking hook is a column, and the second locking hook slides along the surface of the column.

[0022] This utility model embodiment also provides a folding container, including bottom corner pieces, corner posts and the aforementioned corner post locking device, wherein the bottom corner pieces are connected to the fixed base and the corner posts are connected to the inner hinge.

[0023] The beneficial effects of this utility model embodiment:

[0024] The corner post locking device of this utility model has an inner hinge and a first locking structure between two side plates. The two side plates are parallel to the inner hinge, and the first locking structure is perpendicular to the side plates. The first locking structure includes a first rotating member and a locking rod. A locking hook is provided on one side of the inner hinge, and the locking rod and the locking hook are facing each other. When the locking hook and the locking rod rotate towards each other, the inner hinge rotates continuously, causing the locking hook to lift the locking rod. The locking rod falls back under the action of gravity, causing the locking hook and the locking rod to engage, and the inner hinge is locked. When the locking hook and the locking rod rotate in opposite directions, the inner hinge rotates continuously, causing the locking hook to disengage from the locking rod, and the inner hinge is unlocked. When the first rotating member rotates to the maximum rotation distance, the spring plate abuts against and is squeezed against the inner wall of the fixed seat. When the first rotating member is released, the spring plate returns to its original position, keeping the first rotating member in an upright state, which facilitates the engagement of the inner hinge and the first locking structure in the next operation.

[0025] Under the action of gravity, the locking rod can remain engaged in the locking hook, preventing the locking hook from slipping off the locking rod. The inner hinge of the corner post locking device of this utility model achieves the locking or unlocking state relative to the fixed seat through the cooperation of the locking rod and the locking hook, making the operation simple. The folding container can be switched between the use state and the storage state simply by rotating the inner hinge and the first rotating part.

[0026] The folding container of this utility model is equipped with a corner post locking device, which can be quickly folded when needed so that multiple folding containers can be stacked, and can be quickly locked when needed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the corner post locking device of the first embodiment;

[0028] Figure 2 This is a schematic diagram of the locking process of the corner post locking device in the first embodiment;

[0029] Figure 3 This is a schematic diagram of the unlocking process of the corner post locking device in the first embodiment;

[0030] Figure 4 yes Figure 2 A magnified view of part A in the middle;

[0031] Figure 5 This is a schematic diagram of the corner post locking device in the second embodiment;

[0032] Figure 6This is a schematic diagram of the locking process of the corner post locking device in the second embodiment;

[0033] Figure 7 This is a schematic diagram of the unlocking process of the corner post locking device in the second embodiment;

[0034] Figure 8 yes Figure 6 A magnified view of part B in the middle section;

[0035] The reference numerals for the accompanying drawings in the specification are as follows:

[0036] 10. Inner hinge; 11. Locking hook; 12. First locking hook; 20. Fixing seat; 21. Side plate; 211. Limiting block; 212. Second pivot; 22. Rear plate; 23. Base plate; 30. First locking structure; 31. First rotating component; 311. Mounting position; 312. First pivot; 32. Locking rod; 33. Spring plate; 331. Back bend; 34. Pedal; 35. Fixing plate; 40. Bottom corner piece; 50. Second locking structure; 51. Second rotating component; 511. Second locking hook; 52. Mounting seat; 53. Elastic component; 54. Wrench. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1

[0039] Please refer to Figures 1 to 4 This utility model embodiment provides a corner post locking device, including:

[0040] The fixing base 20 includes two side plates 21, which are parallel and spaced apart.

[0041] An inner hinge 10 is located between two side plates 21. The inner hinge 10 is hinged to the side plates 21. The rotation axis of the inner hinge 10 is perpendicular to the side plates 21. A locking hook 11 is provided on one side of the inner hinge 10.

[0042] The first locking structure 30 is located between the locking hook 11 and the two side plates 21. The first locking structure 30 includes a first rotating member 31, a spring plate 33 and a locking rod 32. The first rotating member 31 is hinged to the side plate 21. The rotation axis of the first rotating member 31 is perpendicular to the side plate 21. One end of the first rotating member 31 is provided with a mounting position 311 for mounting the locking rod 32. The locking rod 32 can move vertically on the mounting position 311. The locking rod 32 is arranged facing the locking hook 11. The spring plate 33 is arranged on the side away from the locking hook 11. One end of the spring plate 33 is fixedly connected to the first rotating member 31, and the other end is bent upward and outward away from the first rotating member 31, with the end located outside the range of the first rotating member 31 in the orthographic projection.

[0043] When the locking hook 11 and the locking rod 32 rotate towards each other, the inner hinge 10 rotates continuously, causing the locking hook 11 to lift the locking rod 32. The locking rod 32 falls back under the action of gravity, causing the locking hook 11 to engage with the locking rod 32, and the inner hinge 10 is locked. When the locking hook 11 and the locking rod 32 rotate away from each other, the inner hinge 10 rotates continuously, causing the locking hook 11 to disengage from the locking rod 32, and the inner hinge 10 is unlocked. When the first rotating member 31 rotates to the maximum rotation distance, the spring plate 33 abuts against the inner wall of the fixed seat 20 and is squeezed. When the first rotating member 31 is released, the spring plate 33 returns to its original position, so that the first rotating member 31 remains in an upright state.

[0044] The corner post locking device of this embodiment can be used on folding containers. The folding container may include a bottom corner piece 40, corner posts, and the aforementioned corner post locking device. The bottom corner piece 40 is connected to the fixed base 20, and the corner post is connected to the inner hinge 10. The fixed base 20 is fixedly installed on the bottom corner piece 40, and the inner hinge 10 is fixedly installed on the corner post. Rotation of the inner hinge 10 can drive the corner post to rotate, causing the corner post to fold, i.e., the folding container to be in a folded state. This facilitates the transportation of multiple stacked folding containers, reducing ocean freight costs.

[0045] Specifically, the bottom corner piece 40 can be fixed to the bottom of the two side plates 21 and fixedly connected to the two side plates 21, and the multi-directional fixation makes the installation more stable. The corner post can be located above the inner hinge 10, and the bottom of the corner post is fixedly connected to the inner hinge 10, so that the rotation of the inner hinge 10 drives the corner post to rotate.

[0046] Specifically, the side plate 21 can be a flat plate, with two flat plates parallel to each other and spaced apart, so that there is enough space between the two flat plates to install the inner hinge 10 and the first locking structure 30.

[0047] In this embodiment, the fixing seat 20 is installed after the folding container, the two side plates 21 are in a vertical state, and the inner hinge 10 and the first rotating member 31 are also in a vertical state.

[0048] Specifically, the rotation axis of the inner hinge 10 is the second rotation axis 212, which is perpendicular to the side plate 21. The rotation axis of the first rotating member 31 is the first rotation axis 312, which is perpendicular to the side plate 21.

[0049] The inner hinge 10 can also be a flat plate. The inner hinge 10 can be arranged parallel to the inner sidewall of the fixed base 20. The inner hinge 10 is rotatably connected to the side plate 21 through the second pivot 212, so that the inner hinge 10 can rotate relative to the fixed base 20. Specifically, the inner hinge 10 is provided with a first through hole, and the side plates 21 on both sides are provided with second through holes corresponding to the first through hole. The second pivot 212 passes through the first and second through holes to connect the inner hinge 10 to the side plate 21, and the inner hinge 10 can rotate relative to the side plate 21 around the second pivot 212.

[0050] The second through hole can be located on one side of the bottom of the inner hinge 10, and the locking hook 11 is located on the other side of the inner hinge 10. The locking hook 11 can be set on the side of the inner hinge 10 facing the first locking structure 30.

[0051] In some embodiments, when the inner hinge 10 needs to be locked, the rotation of the first rotating member 31 can be restricted, or the first rotating member 31 can be allowed to rotate in the opposite direction to the inner hinge 10, so that the locking rod 32 and the locking hook 11 engage with each other to achieve locking. When the inner hinge 10 needs to be unlocked, a reverse force is applied to the inner hinge 10, which can restrict the rotation of the first rotating member 31, or the first rotating member 31 can be allowed to rotate in the opposite direction to the inner hinge 10 to achieve unlocking.

[0052] The first locking structure 30 includes a first rotating member 31 and a locking rod 32. The first rotating member 31 has a first rotating shaft 312 in the middle. The side plates 21 on both sides are parallel to each other. The first rotating member 31 is perpendicular to the side plates 21. The first locking structure 30 and the inner hinge 10 are arranged between the side plates 21 on both sides, so that the locking rod 32 faces the locking hook 11.

[0053] The first locking structure 30 also includes a spring plate 33, which is arranged parallel to the first rotating member 31. A fixing plate 35 may be provided on the side of the first rotating member 31 facing away from the locking hook 11. One end of the spring plate 33 is fixedly connected to the fixing plate 35, and the other end extends upward and outward toward the side facing away from the first rotating member 31, with the other end located outside the vertical projection range of the first rotating member 31. This ensures that when the first rotating member 31 rotates away from the locking hook 11, the spring plate 33 abuts against the inner wall of the fixing seat 20. The fixed base 20 also includes a rear plate 22. When the first rotating member 31 rotates away from the locking hook 11, the spring plate 33 can abut against the rear plate 22. When the first rotating member 31 continues to rotate away from the locking hook 11, the spring plate 33 is compressed, causing the spring plate 33 to store energy. After the first rotating member 31 is released, the first rotating member 31 drops under the action of the restoring force of the spring plate 33 and springs back to its original position, so that the first rotating member 31 remains in an upright state, which facilitates the locking hook 11 of the inner hinge 10 to engage with the locking rod 32 next time.

[0054] Preferably, the other end of the spring sheet 33 may be provided with a back bend 331, which bends back towards the first rotating member 31, making the end of the spring sheet 33 smoother and preventing wear on the surface of the rear plate 22 when the spring sheet 33 abuts against the rear plate 22.

[0055] Specifically, the locking bar 32 may include a first connecting part and a second connecting part connected to both ends of the first connecting part. The second connecting part is connected to the first rotating member 31, and the first connecting part is used to cooperate with the locking hook 11. The thickness of the first connecting part is greater than the thickness of the second connecting part. When the second connecting part is installed on the first rotating member 31, it restricts the horizontal movement of the first connecting part.

[0056] Specifically, the mounting position 311 can be a mounting hole, the shape of which matches the shape of the locking rod 32. The height of the mounting hole is greater than the thickness of the second connecting part and less than the thickness of the first connecting part, so that the second connecting part can move up and down relative to the first rotating member 31.

[0057] More specifically, a limiting block 211 is provided on the inner side of the side plate 21. When the locking hook 11 is engaged with the locking rod 32, the locking hook 11 abuts against the lower surface of the locking rod 32, the limiting block 211 is located above the locking rod 32, and when the first rotating member 31 rotates, the limiting block 211 is located on the rotation trajectory of the upper surface of the locking rod 32.

[0058] Since the locking rod 32 can move up and down within the mounting hole, when the locking rod 32 is engaged with the locking hook 11, there is a gap between the limiting block 211 and the upper surface of the locking rod 32. The locking rod 32 has a certain thickness. To prevent the inner hinge 10 from being unlocked during the bumpy transport of the first rotating component 31 or the folding of the container, this gap is a micro-gap. That is, the limiting block 211 is located on the rotation trajectory of the upper surface of the locking rod 32, restricting the rotation of the first rotating component 31 and ensuring the engagement state of the locking hook 11 and the locking rod 32. In this embodiment, the locking rod 32 is a square rod, and the gap distance is less than the width of the upper surface of the square rod. When the locking rod 32 and the locking hook 11 need to be engaged or disengaged, the upper surface of the locking rod 32 and the limiting block 211 have interference friction to achieve the engagement or disengagement of the locking hook 11 and the locking rod 32. That is, it is necessary to forcefully rotate the first rotating component 31 or the inner hinge 10 to lock or unlock the inner hinge 10, increasing the friction feel so that the operator can know whether the engagement is in place by feel.

[0059] In one specific embodiment, the other end of the first rotating member 31 is provided with a pedal 34, which is used for foot control to rotate the first rotating member 31 away from the locking hook 11. Specifically, the pedal 34 is arranged opposite to the locking rod 32. Since the corner post locking device is fixed to the bottom of the folding container, the operator uses his foot to act on the pedal 34 and controls the rotation direction of the first rotating member 31 by controlling the forward and backward movement of the pedal 34, which facilitates operation.

[0060] More specifically, the bottom of the inner hinge 10 has an inclined surface on the side facing the first locking structure 30. The inclined surface slopes downward from the side with the locking hook 11 and towards the side with the second pivot 212. The inclined surface of the inner hinge 10 is provided to avoid the pedal 34 and to give the operator space to move the pedal 34.

[0061] The corner post locking device of this utility model has an inner hinge 10 and a first locking structure 30 between two side plates 21. The two side plates 21 are parallel to the inner hinge 10, and the first locking structure 30 is perpendicular to the side plates 21. The first locking structure 30 includes a first rotating member 31 and a locking rod 32. A locking hook 11 is provided on one side of the inner hinge 10, and the locking rod 32 is arranged facing the locking hook 11. When the locking hook 11 and the locking rod 32 rotate towards each other, the inner hinge 10 rotates continuously, causing the locking hook 11 to lift the locking rod 32. The locking rod 32 then falls back under the action of gravity. The locking hook 11 engages with the locking rod 32, locking the inner hinge 10. When the locking hook 11 and the locking rod 32 rotate in opposite directions, the inner hinge 10 continues to rotate, causing the locking hook 11 to disengage from the locking rod 32 and the inner hinge 10 to be unlocked. When the first rotating member 31 rotates to its maximum rotation distance, the spring plate 33 abuts against and is squeezed against the inner wall of the fixed seat 20. When the first rotating member 31 is released, the spring plate 33 returns to its original position, keeping the first rotating member 31 in an upright state, which facilitates the engagement of the inner hinge 10 with the first locking structure 30 in the next operation.

[0062] Under the action of gravity, the locking rod 32 can remain engaged in the locking hook 11, preventing the locking hook 11 from slipping with the locking rod 32. The inner hinge 10 of the corner post locking device of this utility model achieves the locking or unlocking state relative to the fixed seat 20 through the cooperation of the locking rod 32 and the locking hook 11, making the operation simple. The folding container can be switched between the use state and the storage state simply by rotating the inner hinge 10 and the first rotating part 31.

[0063] The folding container of this utility model is equipped with a corner post locking device, which can be quickly folded when needed so that multiple folding containers can be stacked, and can be quickly locked when needed.

[0064] Example 2

[0065] Please refer to Figures 5 to 8 This utility model embodiment provides a corner post locking device, including:

[0066] The fixing base 20 includes two side plates 21, which are parallel and spaced apart.

[0067] The inner hinge 10 is located between the two side plates 21. The inner hinge 10 is hinged to the side plates 21. The rotation axis of the inner hinge 10 is perpendicular to the side plates 21. The bottom of the inner hinge 10 is provided with a first locking hook 12.

[0068] The second locking structure 50 is located between the locking hook and the two side plates 21. The second locking structure 50 includes a mounting base 52 fixedly connected to the side plate 21, a second rotating member 51 rotatably connected to the mounting base 52, and an elastic member 53. The rotation axis of the second rotating member 51 is perpendicular to the side plate 21. One end of the second rotating member 51 is provided with a second locking hook 511. One end of the elastic member 53 is fixedly connected to the other end of the second rotating member 51, and the other end of the elastic member 53 is fixedly connected to the inner wall of the mounting base 52.

[0069] When the first hook 12 moves toward the second hook 511, the inner hinge 10 rotates continuously, causing the first hook 12 to push the second rotating member 51 to rotate away from the inner hinge 10, and the elastic member 53 is compressed until the first hook 12 enters the second hook 511. Under the action of the elastic member 53, the second hook 511 rotates toward the first hook 12, thereby engaging the first hook 12 and the second hook 511 and locking the inner hinge 10. When the first hook 12 moves away from the second hook 511, the first hook 12 pushes the second rotating member 51 to rotate away from the inner hinge 10, and the elastic member 53 is compressed until the first hook 12 disengages from the second hook 511, thereby unlocking the inner hinge 10.

[0070] Specifically, the elastic element 53 can be a compression spring. In some embodiments, it can also be a spring.

[0071] The difference between this embodiment and Embodiment 1 lies in the fact that the first locking hook 12 is located at the bottom of the inner hinge 10, and the composition of the first locking structure 30 and the second locking structure 50 are different. Therefore, the connection method between the fixing seat 20 and the inner hinge 10 in this embodiment can refer to the fixing seat 20 and the inner hinge 10 in Embodiment 1, and will not be repeated here.

[0072] In this embodiment, the first locking hook 12 is disposed at the bottom of the inner hinge 10, and the second rotating member 51 is disposed parallel to the bottom of the inner hinge 10. Preferably, the first locking hook 12 can be a column, the extension direction of which is perpendicular to the side plate 21, so that the column can engage with the second locking hook 511. The rotation of the inner hinge 10 drives the column to rotate, and the column pushes the second locking hook 511 to rotate away from the first locking hook 12 until the column falls into the second locking hook 511. Since the other end of the second rotating member 51 is provided with a compression spring, the compression spring is compressed when the second locking hook 511 rotates away from the first locking hook 12, and the compression spring stores energy. When the column falls into the second locking hook 511, the compression spring is released, and the restoring force of the compression spring rotates the second rotating member 51 towards the column, so as to engage the column with the second locking hook 511, that is, the inner hinge 10 is locked. Due to the action of the elastic element 53, the second locking structure 50 and the inner hinge 10 are firmly engaged, keeping the second locking hook 511 engaged with the first locking hook 12.

[0073] Specifically, the mounting base 20 may also include a base plate 23, the bottom of the mounting base 52 may be fixed on the base plate 23, and the two sides may be fixedly connected to the side plates 21 to make the installation more stable.

[0074] Preferably, the first locking hook 12 is a column, and the second locking hook 511 can slide along the surface of the column, so that the engagement of the first locking hook 12 and the second locking hook 511 is smoother.

[0075] When the inner hinge 10 needs to be unlocked, it is rotated in the opposite direction, meaning the first locking hook 12 and the second locking hook 511 rotate in opposite directions. The first locking hook 12 is a column, and the column will push the second locking hook 511 to rotate away from the column until the column is disengaged from the second locking hook 511, thus unlocking the inner hinge 10. Since a compression spring is provided at the other end of the second rotating member 51, the compression spring is compressed when the second locking hook 511 rotates away from the first locking hook 12, storing energy. When the column is disengaged from the second locking hook 511, the compression spring is released, and the restoring force of the compression spring will rotate the second rotating member 51 towards the column, so that the second rotating member 51 returns to a horizontal state, facilitating the next engagement of the inner hinge 10 with the second locking structure 50.

[0076] The corner post locking device of this embodiment can be used on folding containers, allowing for quick folding when needed to stack multiple folding containers, and quick installation and locking when required.

[0077] Specifically, a wrench 54 is provided on the side of the second rotating member 51 near the second locking hook 511, and a first limiting hole for the wrench 54 to pass through is provided on one side of the mounting base 52. The side plate 21 is provided with a second limiting hole corresponding to the first limiting hole. The height of the first limiting hole and the second limiting hole is greater than the diameter of the wrench 54. The wrench 54 protrudes from the surface of the side plate 21 through the first limiting hole and the second limiting hole and moves up and down within the first limiting hole and the second limiting hole.

[0078] Since the inner hinge 10 is fixedly connected to the corner post of the folding container, and the corner post is relatively large, it requires a lot of force to directly flip the corner post. To facilitate operation, a wrench 54 is provided on the side of the second rotating part 51 near the second locking hook 511. The rotation direction of the second rotating part 51 is controlled by the wrench 54 to control the engagement or disengagement of the first locking hook 12 and the second locking hook 511, thereby realizing the locked or unlocked state of the inner hinge 10.

[0079] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model by those skilled in the art should be included within the scope of protection of this utility model.

Claims

1. A corner post locking device, characterized by, The utility model relates to a fixed seat, including two side plates, two the side plate parallel and interval setting, the inner hinge between two the side plate, the inner hinge with the side plate articulates, the rotation axis of the inner hinge with the side plate perpendicular to each other, one side of the inner hinge is equipped with the lock hook, the first locking structure between the lock hook and two the side plate, the first locking structure includes the first rotation piece, spring leaf and lock rod, the first rotation piece with the side plate articulates, the rotation axis of the first rotation piece with the side plate perpendicular to each other, the first rotation piece one end is equipped with the installation site for installing the lock rod, the lock rod can vertically move on the installation site, the lock rod is opposite with the lock hook arrangement, the spring leaf is arranged in the side away from the lock hook, one end of the spring leaf is fixedly connected with the first rotation piece, the other end is curved and the terminal is located in the range of the first rotation piece in orthographic projection away from the first rotation piece side upward outward, when the lock hook and the lock rod are opposite and rotate, the inner hinge continues to rotate and makes the lock hook lift the lock rod, the lock rod falls under the action of gravity, makes the lock hook and the lock rod lock, the inner hinge is locked, when the lock hook and the lock rod are opposite and rotate, the inner hinge continues to rotate and makes the lock hook and the lock rod separate, the inner hinge is unlocked, when the first rotation piece rotates to the maximum rotation distance, the spring leaf and the fixed seat inner wall abut and are extruded, when the first rotation piece is loose, the spring leaf restores to the first rotation piece with the pop back original position, makes the first rotation piece keep the vertical state. The side of the first rotation piece away from the lock hook is equipped with the fixed plate, one end of the spring leaf is fixedly connected with the fixed plate, the other end of the spring leaf is equipped with the back bending part, and the back bending part is bent towards the first rotation piece. The lock rod includes a first connecting portion and second connecting portions connected to both ends of the first connecting portion. The thickness of the first connecting portion is greater than the thickness of the second connecting portions. The second connecting portions are connected to the first rotation piece. The first connecting portion is used to cooperate with the lock hook to limit the horizontal movement of the first connecting portion when the second connecting portions are installed on the first rotation piece. The installation site is a mounting hole. The hole height of the mounting hole is greater than the thickness of the second connecting portions and less than the thickness of the first connecting portion, so that the second connecting portions can move up and down relative to the first rotation piece. The inner side of the side plate is provided with a limiting block. When the lock hook and the lock rod are locked, the lower surface of the lock hook abuts against the lock rod. The limiting block is located above the lock rod, and the limiting block is located on the rotation track of the upper surface of the lock rod when the first rotation piece rotates.

2. The corner post locking device of claim 1, wherein, The other end of the first rotation piece is provided with a pedal. The pedal is used to control the rotation of the first rotation piece away from the lock hook by foot stepping.

3. The corner post locking device of claim 1, wherein, The utility model relates to a fixed seat, including two side plates, two the side plate parallel and interval setting, 4. The corner post locking device of claim 3, wherein, ​ 5. The corner post locking device of claim 4, wherein, ​ 6. The corner post locking device of claim 1, wherein, ​ 7. A corner post locking device characterized by, ​ ​ An inner hinge is located between the two side plates, the inner hinge is hinged with the side plates, the rotation axis of the inner hinge is perpendicular to the side plates, and the bottom of the inner hinge is provided with a first locking hook; A second locking structure is located between the locking hook and the two side plates, the second locking structure comprises a mounting seat fixedly connected with the side plates, a second rotating piece rotationally connected with the mounting seat, and an elastic piece, the rotation axis of the second rotating piece is perpendicular to the side plates, one end of the second rotating piece is provided with a second locking hook, one end of the elastic piece is fixedly connected with the other end of the second rotating piece, and the other end of the elastic piece is fixedly connected with the inner wall of the mounting seat; When the first locking hook moves towards the second locking hook, the inner hinge continuously rotates to push the second rotating piece to rotate away from the inner hinge, and the elastic piece is compressed, until the first locking hook enters the second locking hook, and under the action of the elastic piece, the second locking hook rotates towards the first locking hook, so that the first locking hook and the second locking hook are buckled to lock the inner hinge; when the first locking hook moves away from the second locking hook, the first locking hook pushes the second rotating piece to rotate away from the inner hinge, and the elastic piece is compressed, until the first locking hook and the second locking hook are unbuckled to unlock the inner hinge.

8. The corner post locking device of claim 7, wherein, The side close to the second locking hook of the second rotating piece is provided with a wrench, one side of the mounting seat is provided with a first limiting hole for the wrench to pass through, the side plate is provided with a second limiting hole corresponding to the first limiting hole, the hole height of the first limiting hole and the second limiting hole is greater than the diameter of the wrench, the wrench passes through the first limiting hole and the second limiting hole and protrudes from the surface of the side plate and moves up and down in the first limiting hole and the second limiting hole.

9. The corner post locking device of claim 7, wherein, The first locking hook is a column, and the second locking hook slides along the surface of the column.

10. A folding container, characterized in that The bottom corner piece is connected with the mounting seat, and the corner column is connected with the inner hinge.

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