Locking device of folding box hinge

Abstract

The utility model relates to the field of folding boxes, in particular to a folding box hinge locking device which comprises a stop dog and a push rod, a stop dog spring is connected between the stop dog and an inner hinge, the push rod transversely penetrates through a hinge base, a push rod spring is connected between the push rod and the hinge base, and the end, located on the outer side of the hinge base, of the push rod is used for bearing force. The end, located on the inner side of the hinge base, of the hinge base is used for applying force to the check block after being stressed, a reinforcing plate is arranged on the side, facing the inner hinge, of the hinge base, and in the process that the inner hinge pivots from the folding position to the opening position, the reinforcing plate is matched with the dead weight of the inner hinge to apply force to the check block to enable the check block to press the inner hinge, so that the inner hinge pivots to the opening position without hindrance. And the reinforcing plate and the reset stop block are matched together to stop the pivoting of the inner hinge and lock the inner hinge. According to the hinge locking device, the check block and the push rod which can be compressed and rebounded are adopted, the inner hinge is locked by utilizing a mechanism that the check block can rebound after being pressed, and the inner hinge is released by utilizing a mechanism that the push rod can rebound after being pushed, so that the hinge locking device is more convenient to reset, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of folding boxes, in particular to a locking device for a hinge of a folding box. Background Art

[0002] The containerized multimodal transport mode is currently the most widely used freight mode in the world. When a folding box is used to transport a commercial vehicle, the folding of the front and rear ends is achieved through a hinge device. In existing hinge devices, a locking component, such as a handle, is generally used to lock the inner hinge. At the same time, the locking component is equipped with a locking part to lock the handle so that it is fixed. Therefore, when unlocking the inner hinge, it is necessary to first unlock the handle with the locking component, and then unlock the inner hinge with the handle. This unlocking process goes through two steps, which increases the complexity of the entire movement process of the inner hinge. Utility Model Content

[0003] The utility model aims to provide a locking device for a hinge of a folding box, so as to make the hinge of the folding box move more conveniently.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking device for a hinge of a folding box, the hinge of the folding box comprising an inner hinge and a hinge seat, the inner hinge being pivotally connected to the hinge seat between a folded position and an open position, the locking device comprising a stopper and a push rod, a stopper spring being connected between the stopper and the inner hinge, the stopper being pressed toward the inner hinge when a force is applied, and the stopper being automatically reset when no force is applied; the push rod traverses the hinge seat and is connected to a push rod spring between the hinge seat, one end of the push rod located outside the hinge seat being used for applying force, and one end located inside the hinge seat being used for applying force to the stopper after applying force, and the push rod being automatically reset without applying force to the stopper when no force is applied;

[0005] A reinforcement plate is provided on the side of the hinge seat facing the inner hinge. During the process of the inner hinge pivoting from the folded position to the opened position, the reinforcement plate cooperates with the deadweight of the inner hinge to apply force to the stopper so that the stopper is pressed against the inner hinge, thereby allowing the inner hinge to pivot to the opened position without hindrance. Then, the stopper is automatically reset to a position partially below the reinforcement plate due to being free from force. The reinforcement plate and the reset stopper cooperate with each other to block the pivoting of the inner hinge and lock the inner hinge. When releasing the inner hinge, the push rod is manually pushed to apply force to the stopper to release the cooperation between the reinforcement plate and the stopper, and then the inner hinge is manually pushed. The reinforcement plate can release the push on the push rod while pressing the stopper.

[0006] Preferably, a set of limiting components are arranged on both sides of the inner hinge. The block is in a "U" shape and integrally formed, including a first baffle and two parallel second baffles. The two ends of the first baffle are respectively located at the same-side ends of the two second baffles. The second baffle cooperates with the limiting component and is connected with a block spring, and the first baffle directly contacts the reinforcing plate.

[0007] Preferably, a convex platform is arranged on the side of the first baffle away from the inner hinge, and the convex platform directly contacts the reinforcing plate. The reinforcing plate is provided with an upper inclined surface and a lower inclined surface, and the convex platform is provided with a convex platform inclined surface.

[0008] During the process of the inner hinge pivoting from the folded position to the open position, the upper inclined surface contacts the lower side of the convex platform and pushes the convex platform towards the inner hinge by means of the inclination angle and the self-weight of the inner hinge. When the inner hinge is in the open position, the push rod pushes the block and then pushes the inner hinge from above, and the convex platform inclined surface contacts the lower inclined surface.

[0009] Preferably, the limiting component includes a first spring baffle, an upper baffle and a lower baffle which are parallel to each other. The upper baffle, the first spring baffle and the lower baffle are all welded to the outer side of the inner hinge, and the two ends of the first spring baffle are respectively located at the same-side ends of the upper baffle and the lower baffle.

[0010] The upper baffle and the lower baffle are perpendicular to the second baffle and clamp the second baffle in the middle. A second spring baffle is arranged on the side of the second baffle facing the inner hinge, and the second spring baffle is parallel to the first spring baffle. Limiting columns are arranged on the opposite sides of the second spring baffle and the first spring baffle, and the two ends of the block spring are respectively sleeved on the two limiting columns.

[0011] Preferably, the end of the second baffle away from the first baffle has a bending part, and the first spring plate is located inside the space surrounded by the bending part and the second baffle.

[0012] Preferably, a push rod hole is arranged on the hinge seat, and the push rod passes through the push rod hole. A push rod spring is sleeved on the push rod, and one end of the push rod spring is fixed to the push rod and the other end is fixed to the hinge seat.

[0013] Preferably, two groups of the push rod and the push rod hole are provided, and the two push rods are connected with the same transmission rod at the ends located outside the hinge seat.

[0014] Preferably, a fixed shaft, a connecting rod and a pedal are provided on the outer side of the hinge seat, the fixed shaft is horizontally arranged on the hinge seat, the connecting rod is sequentially provided with a first waist hole and a second waist hole along the length direction, the fixed shaft passes through the first waist hole, the transmission rod passes through the second waist hole, and the pedal is fixed to the end of the connecting rod close to the second waist hole.

[0015] Compared with the prior art, the beneficial effects produced by the utility model are as follows: the utility model adopts a compressible and reboundable block and push rod, utilizes the mechanism that the block can rebound after being compressed to lock the inner hinge, and utilizes the mechanism that the push rod can rebound after being pushed to release the inner hinge, making it more convenient to reset the locking device of the hinge, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure between the middle stopper and the inner hinge;

[0018] Figure 3 yes Figure 2 Schematic diagram of the structure of the inner hinge;

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of part B;

[0020] Figure 5 yes Figure 2 The structural diagram of the middle stopper;

[0021] Figure 6 yes Figure 5 A top view of

[0022] Figure 7 yes Figure 1 A magnified schematic diagram of part A;

[0023] Figure 8 yes Figure 1 Side view of (without side panels);

[0024] Fig. 9 yes Figure 8 Enlarged schematic diagram of part C. DETAILED DESCRIPTION

[0025] See also Figure 1 , Figure 8 and Fig. 9, in the embodiments of the present utility model, a locking device for a folding box hinge is disclosed. The folding box hinge includes an inner hinge 1 and a hinge seat 2, and the inner hinge 1 is pivotally connected to the hinge seat 2 between a folded position and an open position. The hinge seat 2 includes a back plate 22 vertically welded to the corner piece of the folding box and two side plates 21. A U-shaped plate is welded to the tops of the back plate 22 and the two side plates 21, and the bottom is the corner piece. The two side plates 21 are parallel to each other, the back plate 22 is perpendicular to the side plates 21 and is welded to the same-side ends of the two side plates 21, and the position of the back plate 22 is closer to the end of the box body than that of the side plates 21. The inner hinge 1 is in a plate shape, is sandwiched between the two side plates 21, and is pivotally connected to the two side plates 21.

[0026] A reinforcing plate 23 is provided on the side of the hinge seat 2 facing the inner hinge 1, that is, the reinforcing plate 23 is welded to the side of the back plate 22 facing the inner hinge 1. The locking device is used to cooperate with the reinforcing plate 23 to lock the inner hinge 1 when the inner hinge 1 is in the open position, so as to prevent the inner hinge 1 from pivoting back to the folded position during the transportation of the folding box.

[0027] The locking device includes a stop block 3 and a push rod 4. A stop block spring 5 is connected between the stop block 3 and the inner hinge 1. When the stop block 3 is stressed, it is pressed towards the inner hinge 1, and when the stop block 3 is not stressed, it automatically resets; the push rod 4 passes through the hinge seat 2 and a push rod spring 6 is connected between the push rod 4 and the hinge seat 2. One end of the push rod 4 located outside the hinge seat 2 is for receiving force, and the end located inside the hinge seat 2 is for applying force to the stop block 3 after receiving force. When the push rod 4 is not stressed, it automatically resets and does not apply force to the stop block 3.

[0028] Refer to Figures 2 to 6 , the specific structure between the stop block 3 and the inner hinge 1 is as follows: A set of limiting components are provided on both sides of the inner hinge 1, and the two limiting components are symmetrical about the inner hinge 1. The stop block 3 is in a "U" shape and is integrally formed, including a first baffle 31 and two parallel second baffles 32. The two ends of the first baffle 31 are respectively located at the same-side ends of the two second baffles 32. The end of the second baffle 32 far from the first baffle 31 has a bending part 33, and the joints between the first baffle 31 and the second baffle 32 and between the bending part 33 and the second baffle 32 are all rounded corners. The first baffle 31 directly contacts the reinforcing plate 23, and the second baffle 32 cooperates with the limiting component, that is, the inner hinge 1 is clamped in the middle empty slot of the stop block 3.

[0029] The second baffle plate 32 and the limiting assembly are connected with a block spring 5: each group of limiting assemblies includes a first spring baffle plate 13 and an upper baffle plate 11 and a lower baffle plate 12 which are parallel to each other. The upper baffle plate 11, the first spring baffle plate 13 and the lower baffle plate 12 are all welded to the outer side of the inner hinge 1. The first spring baffle plate 13 is perpendicular to the upper baffle plate 11 and the lower baffle plate 12. The two ends of the first spring baffle plate 13 are respectively located at the same side ends of the upper baffle plate 11 and the lower baffle plate 12, and the first spring baffle plate 13 is further away from the back plate 22 relative to the upper baffle plate 11 and the lower baffle plate 12. The upper baffle plate 11 and the lower baffle plate 12 are perpendicular to the second baffle plate 32 and sandwich the second baffle plate 32 in the middle. The upper baffle plate 11 and the lower baffle plate 12 simultaneously limit the position and movement direction of the second baffle plate 32. The second baffle plate 32 and the entire block 3 can only reciprocate linearly along the setting direction of the upper baffle plate 11 and the lower baffle plate 12. The first spring plate is located inside the space enclosed by the bending portion 33 and the second baffle plate 32, further limiting the movement path of the second baffle plate 32 to prevent the stopper 3 from being separated from the inner hinge 1. A second spring baffle plate 34 is provided on the side of the second baffle plate 32 facing the inner hinge 1, and the second spring baffle plate 34 is parallel to the first spring baffle plate 13. Limiting posts 35 are provided on the opposite sides of the second spring baffle plate 34 and the first spring baffle plate 13, and the two ends of the stopper spring 5 are respectively sleeved on the two limiting posts 35.

[0030] The block spring 5 is located between the first spring baffle 13 and the second spring baffle 34. When the first spring baffle 13 and the second spring baffle 34 are subjected to external force, the block spring 5 is squeezed so that the block spring 5 is in a compressed and contracted state, and the relative distance between the two is shortened, that is, the second baffle 32 moves toward the direction of the first spring baffle 13, and at the same time drives the first baffle 31 to press against the inner hinge 1. When the first spring baffle 13 and the second spring baffle 34 are not subjected to external force, the block spring 5 is in a natural state or automatically resets from a compressed and contracted state to a natural state, that is, a certain distance is maintained between the first baffle 31 and the inner hinge 1, so that the first baffle 31 cooperates with the reinforcing plate 23 to lock the inner hinge 1.

[0031] A boss 36 is provided on one side of the first baffle plate 31 away from the inner hinge 1. The boss 36 is located in the middle of the first baffle plate 31. The lower side of the boss 36 is rounded, and the upper side is provided with a boss inclined surface 37. The plate surface portion of the first baffle plate 31 located on both sides of the boss 36 can withstand the thrust of the push rod 4, and during the pivoting process of the inner hinge 1, the boss 36 is in direct contact with the reinforcing plate 23. The reinforcing plate 23 is provided with an upper inclined surface 231 and a lower inclined surface 232. The upper inclined surface 231 is the original small inclined surface of the reinforcing plate 23, and the lower inclined surface 232 is a large inclined surface after additional cutting.

[0032] During the process of the inner hinge 1 pivoting from the folded position to the open position, the upper inclined surface 231 of the reinforcing plate 23 contacts the lower side of the boss 36 and applies force to the boss 36, the first baffle 31 and the second baffle 32 by means of the inclination angle and the deadweight of the inner hinge 1, squeezing the block spring 5, pushing the boss 36 and the first baffle 31 toward the inner hinge 1, so that the inner hinge 1 can pivot to the open position without hindrance, and after the inner hinge 1 is completely rotated to the open position, the vertical position of the reinforcing plate 23 is located above the vertical position of the first baffle 31, and no force is applied to the block 3, so the block 3 automatically resets, and the first baffle 31 completely falls under the reinforcing plate 23, so that the block 3 cooperates with the reinforcing plate 23 to lock the inner hinge 1.

[0033] When the inner hinge 1 is in the open position, if the inner hinge 1 needs to be released and unlocked, after applying force to the push rod 4 to push the stopper 3, the boss 36 and the first stopper 31 are pressed toward the inner hinge 1. If the inner hinge 1 is pushed from above the stopper 3, the boss inclined surface 37 directly contacts the lower inclined surface 232 of the reinforcing plate 23 and slides out along the lower inclined surface 232. In this process, the reinforcing plate 23 replaces the push rod 4 to squeeze the boss 36, so the force applied to the push rod 4 can be released without unnecessary operation. Figure 7 , the specific setting structure of the push rod 4 is as follows:

[0034] The hinge seat 2 is provided with push rod holes, two of which are located on the back plate 22, the connecting line of the two push rod holes is located in the horizontal direction, and the push rod holes are lower than the vertical position of the reinforcing plate 23. Each push rod hole is correspondingly provided with a push rod 4, and two groups of push rod holes and push rods 4 are correspondingly provided, symmetrically with the horizontal center line of the boss 36, and are respectively used to apply force to the parts of the first baffle 31 located on both sides of the boss 36. The push rod 4 passes through the push rod hole, and a part is located on the side of the back plate 22 away from the inner hinge 1, and a part is located on the side of the back plate 22 facing the inner hinge 1, that is, the two ends of the push rod 4 are respectively located on the outside and inside of the hinge seat 2. The part of each push rod 4 located on the outside of the hinge seat 2 is welded with a spring seat 42, and the push rod spring 6 is sleeved on the push rod 4, one end of which is welded to the spring seat 42, and the other end is welded to the back plate 22. When no force acts on the push rod 4, the push rod spring 6 is in a natural state, and the end of the push rod 4 located inside the hinge seat 2 is in the initial position, and does not exert a thrust on the first baffle 31. When a force acts on the push rod 4, the push rod spring 6 is in a compressed and contracted state, and the part of the push rod 4 located inside the hinge seat 2 becomes longer, that is, the end of the push rod 4 moves away from the back plate 22, so as to exert a force on the first baffle 31.

[0035] In order to facilitate the pushing of the two push rods 4, the ends of the two push rods 4 located outside the hinge seat 2 are connected to the same transmission rod 41, and the outside of the hinge seat 2 is also provided with a fixed shaft 25, a connecting rod 26 and a pedal 27. A mounting seat 24 is horizontally welded on the side of the back plate 22 away from the inner hinge 1. Both ends of the mounting seat 24 are provided with mounting holes with vertical hole surfaces. Both ends of the fixed shaft 25 pass through the corresponding mounting holes, and a limiting portion 251 is welded at the end to prevent the fixed shaft 25 from axially separating from the mounting seat 24. The above structure enables the fixed shaft 25 to be horizontally arranged on the hinge seat 2, and the fixed shaft 25 can rotate freely in the mounting hole. The connecting rod 26 is provided with a first waist hole 261 and a second waist hole 262 in sequence along the length direction. The fixed shaft 25 passes through the first waist hole 261, and the transmission rod 41 passes through the second waist hole 262. The pedal 27 is fixed to the end of the connecting rod 26 close to the second waist hole 262. Stepping on the pedal 27 can apply force to the push rod 4 through the connecting rod 26 and the transmission rod 41. If the inner hinge 1 needs to be released and unlocked, the person can step on the pedal 27 to push the stopper 3 toward the inner hinge 1, and then push the corner column fixed to the inner hinge 1 to complete the unlocking. In this process, the stopper 3 leaves the push rod 4 and encounters the reinforcing plate 23. The stopper 3 is still in a compressed state, and the push rod 4 can be released and reset under the action of the push rod spring 6.

[0036] Based on the above structural scheme, during the process of the inner hinge 1 pivoting from the folded position to the open position, the reinforcing plate 23 cooperates with the deadweight of the inner hinge 1 to apply force to the stopper 3 so that the stopper 3 presses against the inner hinge 1, so that the inner hinge 1 pivots to the open position without hindrance, and then the stopper 3 automatically resets to a position partially below the reinforcing plate 23 due to no force, and the reinforcing plate 23 and the reset stopper 3 cooperate to block the pivoting of the inner hinge 1 and lock the inner hinge 1. When the inner hinge 1 needs to be released, the push rod 4 is manually pushed from the outside to apply force to the stopper 3 to release the cooperation between the reinforcing plate 23 and the stopper 3, and then the inner hinge 1 is pushed from the top of the stopper 3 so that the reinforcing plate 23 presses the stopper 3, and at this time, the push on the push rod 4 can be released, and the locking of the inner hinge 1 can be released without manually operating other components.

[0037] In summary, the utility model adopts a compressible and reboundable block 3 and a push rod 4, and utilizes the mechanism that the block 3 can rebound after being compressed to lock the inner hinge 1, and utilizes the mechanism that the push rod 4 can rebound after being pushed to release the inner hinge 1, so that the locking device of the hinge is more convenient to reset, thereby improving work efficiency.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking device for a folding box hinge, the folding box hinge comprising an inner hinge (1) and a hinge seat (2), the inner hinge (1) being pivotally connected to the hinge seat (2) between a folded position and an open position, characterized in that: The locking device includes a stop block (3) and a push rod (4). A stop block spring (5) is connected between the stop block (3) and the inner hinge (1). When the stop block (3) is stressed, it is pressed towards the inner hinge (1), and when the stop block (3) is not stressed, it automatically resets. The push rod (4) passes through the hinge seat (2) and a push rod spring (6) is connected between the push rod (4) and the hinge seat (2). One end of the push rod (4) located outside the hinge seat (2) is for receiving force, and one end located inside the hinge seat (2) is for applying force to the stop block (3) after receiving force. When the push rod (4) is not stressed, it automatically resets and does not apply force to the stop block (3). A reinforcing plate (23) is provided on one side of the hinge seat (2) facing the inner hinge (1). The locking device cooperates with the reinforcing plate (23) to lock the inner hinge (1) in the open position.

2. The locking device according to claim 1, characterized in that: A set of limiting components are provided on both sides of the inner hinge (1). The stop block (3) is in a "U" shape and integrally formed, including a first baffle (31) and two parallel second baffles (32). Both ends of the first baffle (31) are respectively located at the same-side ends of the two second baffles (32). The second baffle (32) cooperates with the limiting components and is connected with the stop block spring (5). The first baffle (31) directly contacts the reinforcing plate (23).

3. The locking device according to claim 2, characterized in that: A boss (36) is provided on the side of the first baffle (31) away from the inner hinge (1). The boss (36) directly contacts the reinforcing plate (23). The reinforcing plate (23) is provided with an upper inclined surface (231) and a lower inclined surface (232), and the boss (36) is provided with a boss inclined surface (37). During the process of the inner hinge (1) pivoting from the folded position to the open position, the upper inclined surface (231) contacts the lower side of the boss (36) and pushes the boss (36) towards the inner hinge (1) by means of the inclination angle and the self-weight of the inner hinge (1). When the inner hinge (1) is in the open position, the push rod (4) pushes the stop block (3) and then pushes the inner hinge (1) from above, and the boss inclined surface (37) contacts the lower inclined surface (232).

4. The locking device according to claim 2, characterized in that: The limiting components include a first spring baffle (13) and parallel upper baffle (11) and lower baffle (12). The upper baffle (11), the first spring baffle (13) and the lower baffle (12) are all welded to the outside of the inner hinge (1), and both ends of the first spring baffle (13) are respectively located at the same-side ends of the upper baffle (11) and the lower baffle (12). The upper baffle plate (11) and the lower baffle plate (12) are perpendicular to the second baffle plate (32) and sandwich the second baffle plate (32) in the middle; a second spring baffle plate (34) is arranged on the side of the second baffle plate (32) facing the inner hinge (1); the second spring baffle plate (34) is parallel to the first spring baffle plate (13); limiting columns (35) are arranged on the opposite sides of the second spring baffle plate (34) and the first spring baffle plate (13); and the two ends of the block spring (5) are respectively sleeved on the two limiting columns (35).

5. The locking device according to claim 4, characterized in that: The end of the second baffle (32) away from the first baffle (31) has a bent portion (33), and the first spring baffle (13) is located inside a space enclosed by the bent portion (33) and the second baffle (32).

6. The locking device according to claim 1, characterized in that: The hinge seat (2) is provided with a push rod hole, and the push rod (4) passes through the push rod hole; the push rod spring (6) is sleeved on the push rod (4), and one end of the push rod spring (6) is fixed to the push rod (4), and the other end is fixed to the hinge seat (2).

7. The locking device according to claim 6, characterized in that: There are two groups of push rods (4) and push rod holes, and one end of the two push rods (4) located outside the hinge seat (2) is connected to the same transmission rod (41).

8. The locking device according to claim 7, characterized in that: A fixed shaft (25), a connecting rod (26) and a pedal (27) are arranged on the outer side of the hinge seat (2); the fixed shaft (25) is horizontally arranged on the hinge seat (2); the connecting rod (26) is provided with a first waist hole (261) and a second waist hole (262) in sequence along the length direction; the fixed shaft (25) passes through the first waist hole (261); the transmission rod (41) passes through the second waist hole (262); and the pedal (27) is fixed to the end of the connecting rod (26) close to the second waist hole (262).

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