Pallet box lock and pallet box having the same

Abstract

The present invention discloses a pallet box lock and a pallet box having the same. The pallet box lock comprises a locking rod, a locking rod support and a lock box. The locking rod comprises a locking end for locking and a tail end opposite to the locking end, and the locking end comprises a locking hook head. The lock box comprises a first locking rod shaft hole, a hook head receiving groove and a first mounting portion. The first locking rod shaft hole is used to accommodate the tail end of the locking rod. The locking rod support comprises a second locking rod shaft hole and a second mounting portion. The locking rod extends through the second locking rod shaft hole. The size of the hook head receiving groove is larger than the size of the locking end to accommodate the locking hook head. The first mounting portion is used to connect with the second mounting portion to mount the locking rod support to the lock box. The pallet box lock according to the present invention can be applied to a pallet box with a thin end wall, wherein the thickness of the end wall of the pallet box is smaller than the size of the locking end. The locking rod and the locking rod support can be surface treated first and then mounted to the lock box.

Description

Technical Field

[0001] The present invention relates to the field of containers, and in particular to a pallet box lock and a pallet box having the same. Background Art

[0002] In the field of logistics and transportation, pallet boxes are usually used as containers for transporting goods. The pallet box usually includes a chassis, which has two opposite end walls and two opposite side walls connected to it. The end and side walls are connected to the adjacent end and side walls through locks, so that the end and side walls are connected to the chassis as a whole, forming a container for storing and transporting goods.

[0003] After loading the goods, the pallet box is transported in a standard container. In order to maximize the use of the internal volume of the standard container, the size of the pallet box is also limited. For some users, in order to reduce logistics and transportation costs, they want to increase the internal volume of the limited size pallet box as much as possible to increase the cargo loading capacity. Therefore, the end and side walls of the pallet box need to be as thin as possible to meet the requirements.

[0004] According to the pallet box volume required by the customer, the end wall thickness needs to be 15mm to meet the requirements. In addition, according to the structure of the pallet box, the lock needs to be installed on the end wall, and it needs to be a hook lock. In order not to damage the galvanized layer, the lock rod must be installed on the end wall after galvanizing, but the method of welding and installing the lock after galvanizing cannot be used. In order to ensure the strength of the lock, the storage of the hook head, and the operating gap between the lock handle and the end wall sheet, the existing conventional hook locks are thicker overall, suitable for end walls with a thickness of more than 20mm, and most of them are installed by welding after galvanizing.

[0005] According to the requirements, the thickness of the end wall should be about 15mm, the diameter of the lock rod should be 10mm, the lock should be installed after galvanizing, and the operating space of the lock handle should be sufficient (after the end wall becomes thinner, the operating space from the lock handle to the end wall covering becomes smaller). Therefore, conventional locks cannot be used, and the lock structure needs to be redeveloped and designed to at least partially solve the above problems. Summary of the invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0007] A first aspect of the present invention provides a pallet box lock, the lock comprising:

[0008] A locking rod, the locking rod comprising a locking end for locking and a tail end opposite to the locking end, the locking end comprising a locking hook;

[0009] A lock box, the lock box comprising:

[0010] The first locking rod shaft hole is used to accommodate the tail end of the locking rod,

[0011] A hook receiving groove, the size of which is larger than the size of the locking end to accommodate the locking hook, and

[0012] a first mounting portion; and

[0013] A locking rod support, the locking rod support comprising:

[0014] a second locking rod shaft hole, through which the locking rod extends, and

[0015] A second mounting portion, wherein the second mounting portion is used to connect with the first mounting portion to mount the lock rod support to the lock box.

[0016] The pallet box lock according to the present invention can be applied to a pallet box with a thin end wall, wherein the end wall thickness of the pallet box is smaller than the size of the locking end. The locking rod and the locking rod support can be surface treated before being installed to the pallet box.

[0017] Optionally, the locking rod support further comprises an installation limit block, the installation limit block is located on a side of the locking rod support opposite to the second installation portion, and the installation limit block protrudes from the top of the locking rod support.

[0018] The lock box also includes:

[0019] a locking rod mounting portion, the locking rod mounting portion being in communication with the receiving slot and the first locking rod shaft hole and being used for mounting and accommodating the locking rod, and

[0020] The installation limit groove is located on the side of the lock box opposite to the hook head receiving groove, and the installation limit groove is connected to the lock rod installation part and is used to accommodate the installation limit block, wherein

[0021] At least a portion of the locking rod mounting portion facing the mounting limiting groove is configured as a through hole.

[0022] Optionally, the lock further includes a locking handle, which includes a connecting end connected to the locking rod and an operating end opposite to the connecting end, the connecting end is connected to the locking rod on a side of the locking rod support opposite to the locking hook head, the extension direction of the locking handle is the same as and parallel to the extension direction of the locking hook head, and the locking rod can rotate and / or translate together with the locking handle.

[0023] Optionally, the connecting end of the lock handle is connected to the operating end via a bent portion, so that the operating end is farther away from the lock box than the connecting end.

[0024] Optionally, the connecting end of the lock handle is constructed as two parallel lock handle connecting arms.

[0025] The lock box also includes a lock handle limit block. When the lock is locked, the lock handle connecting arm away from the locking hook head is located on a side of the lock handle limit block away from the locking hook head and abuts against the lock handle limit block.

[0026] Optionally, the lock box also includes two lock handle baffles, which are respectively arranged on both sides of the lock handle limit block, and two lock handle storage spaces are formed between the two lock handle baffles and the lock handle limit block. When the lock is opened, the lock handle connecting arm of the lock handle close to the locking hook head is located in the lock handle storage space close to the locking hook head; when the lock is locked, the connecting arm of the lock handle away from the locking hook head is located in the lock handle storage space away from the locking hook head.

[0027] Optionally, a protrusion is provided on one side of the two lock handle baffles facing the lock handle limit block, for preventing the lock handle connecting arm entering the lock handle storage space from escaping from the lock handle storage space.

[0028] Optionally, the lock handle is configured in the form of a flat plate.

[0029] Optionally, the second mounting portion is a mounting through hole, the first mounting portion is a fixing hole, and the lock further comprises a rivet, which passes through the mounting through hole and is inserted into the fixing hole to connect the lock rod support to the lock box in a screw riveting manner.

[0030] Optionally, a receiving surface is provided below the first mounting portion, and when the locking rod support is connected to the lock box, the receiving surface contacts the locking rod support below the locking rod support.

[0031] Optionally, the locking rod mounting portion is integrally constructed as a through hole.

[0032] A second aspect of the present invention provides a pallet box, comprising an end wall, wherein the pallet box lock is installed at an upper corner of the end wall on a side facing the outside of the pallet box, wherein the thickness of the end wall is smaller than the size of the locking end.

[0033] According to the present invention, a pallet box can be used with thin end walls, wherein the end wall thickness of the pallet box is smaller than the size of the locking end. The locking rod and the locking rod support can be surface treated before being mounted to the pallet box.

[0034] Optionally, the pallet box further comprises a side wall, and the columns of the side wall comprise:

[0035] A locking hole, wherein a side of the locking hole close to the outside of the pallet box is open, and a hole diameter of the locking hole is smaller than a size of the locking end;

[0036] A hook head locking groove is located on a side of the locking hole away from the end wall, and a size of the hook head locking groove is larger than a size of the locking end to accommodate the locking hook head.

[0037] Optionally, the pallet box lock further includes a safety lock stop, and the safety lock stop includes:

[0038] A barrier rod support, the barrier rod support is fixed to the end wall column below the lock box, the top of the barrier rod support includes an upper barrier rod hole, and the side of the barrier rod support includes a barrier rod handle groove,

[0039] a barrier rod, the barrier rod passing through the upper barrier rod hole and arranged in the barrier rod support,

[0040] a lever handle connected to the middle of the lever and extending from the lever handle slot to the outside of the lever support, wherein the lever handle can move up and down in the lever handle slot, and

[0041] A spring is sleeved on the lower part of the blocking rod, and the upper end of the blocking rod extends out of the upper blocking rod hole under the biasing force of the spring.

[0042] Optionally, the bottom of the barrier rod support includes a lower barrier rod hole, wherein

[0043] The sum of the compressed height of the spring and the distance from the spring to the upper end of the barrier rod is smaller than the distance between the upper barrier rod hole and the lower barrier rod hole, or

[0044] The distance from the upper end of the shift lever handle to the lower end of the shift lever is smaller than the distance between the upper shift lever hole and the lower shift lever hole.

[0045] Optionally, the pallet box lock also includes a locking handle, the upper end of the barrier rod is configured as an inclined surface, and the locking handle also includes a horizontal edge. During the process of locking the lock and storing the locking handle, the horizontal edge contacts and presses downward the inclined surface to retract the barrier rod into the barrier rod support. When the locking handle is stored, the barrier rod extends upward under the biasing force of the spring to block the horizontal edge.

[0046] Optionally, the side wall column further comprises an end wall stopper, and when the pallet box is in an assembled state, the end wall stopper is located outside the lock box.

[0047] Optionally, the lock box includes a recessed portion for engaging with the end wall stop.

[0048] Optionally, the thickness of the end wall is 12-18 mm, and the diameter of the locking rod is 8-12 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The embodiments of the present invention and their description are shown in the drawings to explain the principle of the present invention. In the drawings:

[0050] Figure 1 is a perspective view of a pallet box installed with a pallet box lock according to a first embodiment of the present invention;

[0051] Figure 2 is a partial enlarged view of an upper corner of an end wall of a pallet box installed with a pallet box lock according to a first embodiment of the present invention;

[0052] Figure 3 A perspective view of a locking rod assembly of a pallet box lock according to a first embodiment of the present invention;

[0053] Figure 4a A perspective view of a lock box of a pallet box lock according to a first embodiment of the present invention;

[0054] Figure 4b for Figure 4a Another perspective view of the lock box is shown;

[0055] Figure 5a to Figure 5c A schematic diagram of the steps of installing a locking rod assembly of a pallet box lock according to a first embodiment of the present invention to a lock box;

[0056] Figure 6 A perspective view of a locking member of a pallet box lock according to a first embodiment of the present invention;

[0057] Figures 7a to 7c It is a schematic diagram of locking steps of a pallet box lock according to a first embodiment of the present invention;

[0058] Figure 8 is a perspective view of a pallet box installed with a pallet box lock according to a second embodiment of the present invention;

[0059] Figure 9a is a partial enlarged view of an upper corner of an end wall of a pallet box installed with a pallet box lock according to a second embodiment of the present invention;

[0060] Figure 9b for Figure 9a Another partial enlarged view of the upper corner of the end wall is shown;

[0061] Fig.10A partial side view of an end wall of a pallet box installed with a pallet box lock according to a second embodiment of the present invention, wherein a lateral edge of the lock handle contacts an inclined surface of an upper end of a blocking rod of a safety lock block; and

[0062] Fig.11 It is a perspective view of a pallet box installed with a pallet box lock according to a second embodiment of the present invention, wherein the end wall and the side wall have been covered with panels.

[0063] Description of reference numerals:

[0064] 1: Pallet box 2: End wall

[0065] 2A: End wall upper beam 2B: End wall column

[0066] 3: Side wall 3A: Side wall upper beam

[0067] 3B: Side wall column 4: Chassis

[0068] 10: Lock box 11: First lock rod shaft hole

[0069] 12: Lock stop installation port 13: Lock handle limit block

[0070] 14: Fixing hole 14A: Receiving part

[0071] 14B: receiving surface 15: hook storage groove

[0072] 16: Guide arc surface 17: Installation limit groove

[0073] 18: Lock rod installation part 18A: The part of the lock rod installation part facing the installation limit groove

[0074] 19: Recessed part 20: Lock rod assembly

[0075] 21: Locking rod 21A: Locking end

[0076] 21B: Tail end 21C: Locking hook

[0077] 22: Lock handle 22A: Connection end

[0078] 22C: Operation end 22D: Bending part

[0079] 22E: Horizontal side 22M, 22N: Lock handle connecting arm

[0080] 23: Lock rod support 24: Mounting through hole

[0081] 26: Second locking rod shaft hole 27: Installation limit block

[0082] 30: Locking piece 31: Hook receiving opening

[0083] 32: Lock hole 33: Hook locking groove

[0084] 34: End wall stop 40: Safety lock

[0085] 41: Bar support 42: Bar

[0086] 42E: Inclined surface 43: Gear lever handle

[0087] 44: Spring 45A: Upper lever hole

[0088] 45B: Lower lever hole 46: Lever handle slot

[0089] 50: Limit lock 51: Lock handle block

[0090] 52: protrusion 64: installation fixing

[0091] 100, 200: Pallet box locks DETAILED DESCRIPTION

[0092] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well known in the art are not described.

[0093] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the same reference numerals are used to represent the same elements, and their descriptions will be omitted.

[0094] In this article, the directional words such as "up", "down", "top", "bottom", "inside", "outside" and so on are all the corresponding directions when the pallet box is in normal use. In this article, the direction perpendicular to the end wall of the pallet box is defined as the length direction of the pallet box, and the direction perpendicular to the side wall of the pallet box is defined as the width direction of the pallet box.

[0095] The following is a detailed description in conjunction with specific implementation methods.

[0096] A first aspect of the present invention discloses a pallet box lock which can be adapted for use with a pallet box having thin end walls.

[0097] like Figure 1As shown, a pallet box lock 100 according to a first embodiment of the present invention can be mounted on a pallet box 1. The pallet box 1 comprises a chassis 4, two end walls 2 and two side walls 3. In the assembled state of the pallet box 1, the end wall 2 is located inside the box of the side wall 3. The pallet box lock 100 is arranged at the upper corner of the end wall 2 facing the outside of the box.

[0098] The pallet box lock 100 according to the first embodiment of the present invention comprises a lock box 10, a lock rod assembly 20 and a mounting fixture 64. Figure 1 and Figure 2 As shown, the lock box 10 is welded to the end wall upper beam 2A and the end wall column 2B, and is located at the upper corner of the end wall 2 facing the outside of the pallet box, forming a part of the main structure of the outer frame of the end wall 2. The lock box 10 is preferably a casting.

[0099] like Figure 3 As shown, the locking rod assembly 20 may include a locking rod 21, a locking handle 22 and a locking rod support 23. The locking rod 21 includes a locking end 21A for locking and a tail end 21B opposite to the locking end. The locking end 21A is provided with a locking hook 21C. The locking handle 22 includes a connecting end 22A connected to the locking rod 21 and an operating end 22C opposite to the connecting end 22A. The locking handle 22 is parallel to the locking hook 21C, that is, the locking handle 22 and the locking hook 21C both extend from the locking rod 21, and the extending direction of the locking handle 22 is the same as and parallel to the extending direction of the locking hook 21C. The locking rod support 23 has a second locking rod shaft hole 26, and the locking rod 21 extends through the second locking rod shaft hole 26. The locking rod support 23 is located between the locking handle 22 and the locking hook 21C. That is, the connection end 22A of the lock handle 22 is connected to the lock rod 21 at the side of the lock rod support 23 opposite to the lock hook 21C, so that the lock rod support 23 is located between the lock handle 22 and the lock hook 21C. The lock rod 21 can rotate around the axis of the lock rod and / or translate along the axial direction of the lock rod together with the lock handle 22.

[0100] The lower end of the lock rod support 23 (the end close to the lock handle 22) has a second mounting portion. In the illustrated embodiment, the second mounting portion is preferably configured as a mounting through hole 24. The upper end of the lock rod support 23 has a mounting stopper 27. The mounting stopper 27 is located on the side of the lock rod support 23 opposite to the second mounting portion and protrudes from the top of the lock rod support 23.

[0101] In addition, after the locking rod assembly 20 is assembled and welded into an integral component, the surface treatment (such as electro-galvanizing) can be performed together.

[0102] like Figure 4a and Figure 4bAs shown, the lock box 10 includes a first lock rod shaft hole 11, a lock handle limit block 13, a first mounting portion, a hook head receiving groove 15 and a mounting limit groove 17. In this embodiment, the first mounting portion is preferably configured as a fixing hole 14. The first lock rod shaft hole 11 is used to accommodate the tail end 21B of the lock rod 21. A lock rod mounting portion 18 is provided between the fixing hole 14 and the mounting limit groove 17. The lock rod mounting portion 18 communicates with the inside and outside of the pallet box, and communicates with the hook head receiving groove 15, the mounting limit groove 17 and the first lock rod shaft hole 11, and is used to install and accommodate the lock rod 21. The mounting limit groove 17 is located on the side of the lock box 10 opposite to the hook head receiving groove 15, and the mounting limit groove 17 is communicated with the lock rod mounting portion 18, and is used to accommodate the mounting limit block 27. The hook head receiving groove 15 is communicated with the lock rod mounting portion 18, and the size of the hook head receiving groove 15 is larger than the size of the locking end 21A of the lock rod 21 to accommodate the locking hook head 21C.

[0103] The installation process of the pallet box lock 100 of the present invention is to first weld the lock box 10 to the upper corner of the end wall 2 (such as Figure 5a As shown), the welded end wall 2 (together with the lock box 10) is then surface treated (eg, hot-dip galvanized), and the surface treated (eg, electro-galvanized) lock rod assembly 20 is then mounted on the lock box 10.

[0104] The locking rod assembly 20 is mounted to the lock box 10 in the following manner. Figure 5b As shown, the lock rod assembly 20 is tilted at a certain angle, that is, the lock handle 22 and the locking hook head 21C are rotated toward the outside of the box, and the tail end 21B of the lock rod 21 is tilted and inserted into the first lock rod shaft hole 11 of the lock box 10. Preferably, the diameter of the first lock rod shaft hole 11 is larger than the diameter of the tail end 21B of the lock rod 21 and has enough clearance for the lock rod 21 to be tilted and inserted. In order to have enough clearance, the diameter of the tail end 21B of the lock rod 21 can be slightly smaller than the lock rod diameter of the locking end 21A. While the lock rod 21 is inserted into the first lock rod shaft hole 11, the lock rod support 23 needs to be tilted at an appropriate angle so that the installation limit block 27 corresponds to the hook head receiving groove 15. During the process of the lock rod 21 being inserted into the first lock rod shaft hole 11 ( Figure 5b During the movement of the middle lock rod 21 from left to right), the installation limit block 27 enters the lock rod installation part 18 from the hook head storage groove 15. When the installation limit block 27 is flush with the installation limit groove 17 of the lock box 10, the lock rod support 23 is rotated to rotate the installation limit block 27 to the inner side of the box of the end wall 2 through the lock rod installation part 18 until the lock rod support 23 is flush with the outside of the lock box 10, and the installation limit block 27 is screwed into the installation limit groove 17 accordingly. Then align the installation through hole 24 with the fixing hole 14, and use the installation fixing member 64 to fix the lock rod support 23 and the lock box 10 to complete the installation of the lock (such as Figure 5cThe mounting member 64 is preferably a rivet, that is, the locking rod support 23 is preferably connected to the lock box 10 by a screw riveting method. It can be understood that the first mounting portion and the second mounting portion can be connected to the locking rod support 23 by a variety of connection methods, such as bonding, clamping, bolting, etc.

[0105] It can be understood that in the first embodiment of the present invention, at least the portion 18A of the locking rod mounting portion 18 that is opposite to the mounting limit groove 17 (at Figure 4a and Figure 4b The portion of the middle lock rod mounting portion 18 located directly below the mounting limit slot 17 is configured as a through hole (i.e., the portion 18A communicates with the inside and outside of the pallet box) for screwing the mounting limit block 27 into the mounting limit slot 17. Figure 4a and Figure 4b As shown, in a preferred embodiment of the present invention, the locking rod mounting portion 18 is entirely configured as a through hole (i.e., the interior and exterior of the pallet box are connected in the entire range of the locking rod mounting portion 18). Compared with a method of configuring a through hole only at the portion 18A directly opposite to the installation limit groove 17 (in this method, the portion of the locking rod mounting portion 18 other than 18A remains a casting wall), the preferred embodiment can reduce the weight of the lock, while eliminating possible interference with the installation and movement of the locking rod 21, and further reduce the thickness of the lock, so that the pallet box can have a thin end wall.

[0106] In the first embodiment of the present invention, the installation limit groove 17 blocks the outside of the installation limit block 27, which can prevent the lock rod assembly 20 from tipping outward and rotating. In an embodiment of the present invention not shown, the second installation portion of the lock rod support 23 includes two installation through holes 24, and the first installation portion of the lock box 10 includes two fixing holes 14, which are respectively located above and below the lock rod 21. Two rivets are used to connect the lock rod support 23 to the lock box 10. In this embodiment, since the two installation points are respectively located above and below the lock rod 21, the lock rod assembly 20 can be effectively prevented from tipping outward and rotating, so the installation limit groove 17 and the installation limit block 27 can be omitted.

[0107] In a preferred embodiment of the present invention, a receiving portion 14A is provided below the first mounting portion (e.g., the fixing hole 14), and the receiving portion 14A has a receiving surface 14B. When the lock rod support 23 is connected to the lock box 10, the receiving surface 14B contacts the lock rod support 23 below the lock rod support 23, playing a supporting and positioning role.

[0108] In a preferred embodiment of the present invention, the connection end 22A of the lock handle 22 is configured as two parallel connection arms 22M and 22N. The connection end 22A of the lock handle 22 is connected to the operating end 22C via a bent portion 22D, so that after the lock rod assembly 20 is installed in the lock box 10, the operating end 22C is farther away from the lock box 10 than the connection end 22A, thereby facilitating the user to operate the lock handle 22. The lock handle 22 is preferably configured in the form of a flat plate, or is made of a plate material with a relatively small thickness, which can increase the operating gap between the lock handle 22 and the end wall 2, making it convenient for the operator's hand to enter between the lock handle 22 and the end wall 2 to operate the lock handle 22.

[0109] like Figure 6 and Figure 9a As shown, a locking member 30 is provided at the upper corner of the side wall 3. The locking member 30 abuts against the side wall upper beam 3A and the side wall column 3B. The locking member 30 includes a hook head receiving opening 31, a locking hole 32 and a hook head locking groove 33. The aperture of the locking hole 32 is smaller than the size of the locking end 21A. The locking hole 32 is an open locking hole, and the opening faces the outside of the box. That is, in the present invention, the locking hole 32 is not a conventional closed hole, and the side of the locking hole 32 close to the outside of the box is open to allow the locking hook 21C to pass through. The hook head receiving opening 31 is located on the side of the locking hole 32 close to the end wall 2. As shown Figures 7a to 7c As shown, in the assembled state of the pallet box 1, the space of the hook receiving opening 31 is at least partially connected to the space of the hook receiving groove 15 of the lock box 10. The size of the hook receiving opening 31 is larger than the size of the locking end 21A to accommodate the locking hook 21C. The hook locking groove 33 is located on the side of the lock hole 32 away from the end wall 2. The size of the hook locking groove 33 is larger than the size of the locking end 21A to accommodate the locking hook 21C.

[0110] The locking process of the pallet box lock 100 of the present invention is as follows: the lock handle 22 is rotated to a substantially horizontal position (such as Figure 7b As shown in the figure, the corresponding locking hook head 21C rotates from the hook head downward state to the hook head outward state at the hook head receiving groove 15, at which time the locking hook head 21C is aligned with the opening of the lock hole 32, and the locking hook head 21C passes through the hook head receiving opening 31 during the rotation process; the locking rod 21 is moved toward the side wall 3 so that the locking hook head 21C passes through the opening of the lock hole 32; the locking handle 22 is rotated in the opposite direction until it is parallel to the end wall 2 (i.e., vertically downward), at which time the locking hook head 21C is also downwardly located in the hook head locking groove 33 and hooks the lower wall of the lock hole 32 (as shown in the figure). Figure 7c ), the lock 100 is locked. The reverse operation can be unlocked.

[0111] In the present application, the state in which the locking rod 21 does not extend out of the lock box 10 and the locking hook 21C is located in the hook receiving groove 15 is the open state of the pallet box lock 100 (eg Figure 7aThe state when the locking rod 21 extends out of the lock box 10 and the locking hook 21C is located in the hook locking groove 33 is the locked state of the pallet box lock 100 (as shown in FIG. Figure 7c As shown), at this time, the locking rod 21 is in the locked position.

[0112] In the locked state of the pallet box lock 100, the lock handle connecting arm 22M of the lock handle 22 away from the lock hook 21C is located on the side of the lock handle limit block 13 away from the lock hook 21C, and abuts against the lock handle limit block 13 to prevent the lock rod 21 from moving toward the side wall 3. At this time, the lower wall of the lock hole 32 prevents the lock hook 21C from moving toward the end wall 2, that is, prevents the lock rod 21 from moving toward the end wall 2, thereby achieving a secure lock of the lock. Although the lock handle connecting arm 22N of the lock handle 22 close to the lock hook 21C abuts against the lock rod support 23, it can also limit the lock rod 21 from moving toward the side wall 3, but because the lock rod support 23 is a mounting part, the connection strength and position accuracy are not as good as the lock handle limit block 13 that is integrated with the lock box 10, so in the locked state, it is preferred that the lock handle 22 abuts against the lock handle limit block 13, and a gap is left between the lock handle 22 and the lock rod support 23.

[0113] like Figures 7a to 7c As shown, in order to make the locking handle 22 more reliable in the open position and the locked position, the pallet box lock 100 can also be provided with a limit lock block 50. The limit lock block 50 is a U-shaped member, and the two side walls of the U-shape form two lock handle blocks 51. Figure 4a and Figure 4b As shown, a lock stopper installation opening 12 is provided on the lock box 10. The lock stopper installation opening 12 communicates with the inside and outside of the box of the end wall 2. The U-shaped bottom wall of the lock stopper 50 is connected to the lock box 10 at the lock stopper installation opening 12 (for example, by welding). The lock handle limit block 13 spans the lock stopper installation opening 12 in the lateral middle part of the lock stopper installation opening 12. The two lock handle baffles 51 of the limited lock stopper 50 extend out of the box from the lock stopper installation opening 12 and are respectively located on both sides of the lock handle limit block 13, and two lock handle storage spaces are formed between the two lock handle baffles 51 and the lock handle limit block 13. A protrusion 52 is provided on the side of the two lock handle baffles 51 facing the lock handle limit block 13. The distance between the protrusion 52 and the side of the lock handle limit block 13 is less than the width of the lock handle connecting arm.

[0114] When the lock handle 22 is placed, the lock handle 22 is rotated toward the end wall 2, and the lock handle connecting arm is pressed into the lock handle storage space by utilizing the deformation ability of the lock handle baffle 51. The protrusion 52 can prevent the lock handle connecting arm that has entered the lock handle storage space from escaping from the lock handle storage space. In the open state of the pallet box lock 100, the lock handle connecting arm 22N of the lock handle 22 close to the locking hook head 21C is pressed into the lock handle storage space close to the locking hook head 21C. In the locked state of the pallet box lock 100, the lock handle connecting arm 22M of the lock handle 22 away from the locking hook head 21C is pressed into the lock handle storage space away from the locking hook head 21C. In order to allow the lock handle 22 to be pressed into the lock handle storage space smoothly, both sides of the upper end of the lock handle limit block 13 have guide arc surfaces 16 (such as Figure 7c As shown), the guide arc surface 16 guides the lock handle 22 into the lock handle storage space.

[0115] In a preferred embodiment of the present invention, the lock member 30 further includes an end wall stopper 34, and the lock box 10 further includes a recessed portion 19 for engaging with the end wall stopper 34. Figure 6 As shown, the end wall stopper 34 is arranged on the side wall column 3B. Figures 7a to 7c As shown, in the assembled state of the pallet box 1, the end wall stopper 34 protrudes from the side wall toward the end wall and is located outside the lock box 10, specifically outside the recessed portion 19 of the lock box 10. Therefore, the end wall stopper 34 can prevent the upper portion of the end wall 2 from tilting toward the outside of the box, and the lock rod 21 can prevent the upper portion of the end wall 2 from tilting toward the inside of the box, thereby ensuring the stability of the end wall 2 in the assembled state.

[0116] According to the first embodiment of the pallet box lock 100 of the present invention, the lock 100 is suitable for installation on a thin end wall by providing a hook receiving groove 15 for the locking hook 21C between the locking rod support 23 and the outer end of the end wall column, the hook of the locking hook 21C is downwardly received in the hook receiving groove 15, the locking hole 32 on the side wall column is configured as an open locking hole, the locking rod support 23 is configured as an integrated structure, and the locking handle 22 is a flat plate structure.

[0117] The pallet box lock of the present invention has a locking hook head whose size is larger than the end wall thickness, so the locking hook head is oriented downward when stored to avoid exceeding the end wall. Since the locking hook head is oriented downward when stored, the locking hook head needs to be oriented outside the box when moving to the lock hole of the side wall. In order to maximize the volume of the pallet box, the end wall is already the outer dimension of the pallet box. Therefore, the lock hole on the side wall cannot be a conventional closed hole. The side of the lock hole close to the outside of the box needs to be open to allow the locking hook head to pass through. In order to prevent the lock from exceeding the thickness of the end wall, the wall thickness of the second lock rod shaft hole on the lock rod support between the locking hook head and the lock handle is relatively small. Therefore, in order to ensure the strength of the lock rod support, the lock rod support is made into a part that is sleeved on the lock rod. In the case of a thin end wall, the lock handle is constructed in a flat plate form, so that the distance between the lock handle and the end wall can be increased within a limited space, thereby facilitating operation.

[0118] In addition, according to the pallet box lock of the present invention, a unique installation method is adopted, and the lock rod, the lock handle and the lock rod support can be first formed into a lock rod assembly and surface treated (such as electrogalvanizing) together, and then installed on the pallet box, thereby achieving the functional requirement of installing the hook-type lock after the surface treatment is completed, avoiding damage to the product caused by welding installation of the lock, eliminating the need to use repair paint, reducing environmental pollution, and having a simple structure, and quick and convenient installation.

[0119] In the first embodiment of the present invention, the locking handle 22 is limited by the elastic deformation force of the locking handle baffle 51. For some pallet boxes with high safety requirements, a rigid limiting mechanism can also be provided to limit the locking handle. Figure 8 As shown, the pallet box 1 is installed with a pallet box lock 200 according to the second embodiment of the present invention. Compared with the pallet box lock 100, the pallet box lock 200 adds a rigid limiting mechanism safety lock stop 40.

[0120] like Figure 9a and Figure 9bAs shown, the safety lock 40 includes a barrier rod support 41, a barrier rod 42, a barrier rod handle 43 and a spring 44. The barrier rod support 41 is a semi-enclosed structure. When in use, it is fixed (for example, welded) to the end wall column 2B below the lock box 10, and its open side faces the interior of the pallet box 1. The top and bottom of the barrier rod support 41 are respectively provided with an upper barrier rod hole 45A and a lower barrier rod hole 45B, and the upper barrier rod hole 45A and the lower barrier rod hole 45B are centered in the vertical direction. The diameter of the upper barrier rod hole 45A is larger than the diameter of the lower barrier rod hole 45B. The barrier rod 42 cooperates with the two barrier rod holes, and the barrier rod 42 passes through the barrier rod holes and is arranged in the barrier rod support 41. The axis of the barrier rod 42 is parallel to the end wall 2 in the vertical direction. The lower part of the barrier rod 42 is thinner than the upper part of the barrier rod 42. The spring 44 is sleeved on the lower part of the barrier rod 42. The radial outer diameter of the spring 44 is smaller than the diameter of the upper portion of the blocking rod 42 and larger than the diameter of the lower blocking rod hole 45B, so that the blocking rod 42 can be supported in the blocking rod support 41. The upper end of the blocking rod 42 extends out of the upper blocking rod hole 45A under the biasing force of the spring 44. Therefore, when the lock is locked, the extended end (upper end) of the blocking rod 42 of the safety lock 40 blocks the outer side of the lock handle 22 to prevent the lock handle 22 from being accidentally opened.

[0121] The lever handle 43 of the safety lock 40 is fixedly connected to the middle of the lever 42. A lever handle groove 46 is provided on one side of the lever support 41 near the center of the end wall. The lever handle 43 extends from the lever handle groove to the outside of the lever support 41. The vertical dimension of the lever handle groove 46 allows the lever handle 43 to move up and down in the lever handle groove 46. When the lever handle 43 abuts against the upper end of the lever handle groove 46 under the action of the spring 44, the lever 42 is in a limited position.

[0122] The sum of the compressed height of the spring 44 and the distance from the spring 44 to the protruding end (upper end) of the barrier rod 42 is smaller than the distance between the upper barrier rod hole 45A and the lower barrier rod hole 45B of the barrier rod support 41, so that the barrier rod 42 and the spring 44 can be installed in the barrier rod support 41.

[0123] According to the second embodiment of the present invention, the barrier rod support 41 is first welded to the end wall column and then surface-treated together with the end wall (e.g., hot-dip galvanizing); the barrier rod handle 43 is first welded to the barrier rod 42 and then surface-treated together with the barrier rod 42 (e.g., electro-galvanizing); after the surface treatment, the safety lock 40 is installed before the end wall covering plate is installed. Fig.11 The figure shows the pallet box after the end wall and the side wall covering plates are installed. The side of the pallet box lock facing the interior of the pallet box is covered by the covering plate, which not only protects the structure of the lock but also makes it neat and beautiful.

[0124] The installation process of the safety lock 40 is as follows: first, fix the baffle rod support 41 to the end wall column 2B, with the open side of the baffle rod support 41 facing the inner side of the box of the end wall 2; put the spring 44 on the lower end of the baffle rod 42; the baffle rod handle 43 faces the inner side of the box of the end wall 2, and the lower end of the baffle rod 42 is obliquely inserted into the lower baffle rod hole 45B of the baffle rod support 41 from the inner side of the box of the end wall 2 to completely compress the spring 44; align the upper end of the baffle rod 42 with the upper baffle rod hole 45A of the baffle rod support 41, relax the spring 44 so that the spring 44 extends the upper end of the baffle rod 42 from the upper baffle rod hole 45A of the baffle rod support 41; rotate the baffle rod handle 43 so that the baffle rod handle 43 enters the baffle rod handle groove 46, and the baffle rod handle 43 abuts against the upper end of the baffle rod handle groove 46 to complete the installation of the safety lock 40.

[0125] In another embodiment, the distance from the upper end of the barrier rod handle 43 to the lower end of the barrier rod 42 is smaller than the distance between the upper barrier rod hole 45A and the lower barrier rod hole 45B of the barrier rod support 41 . The installation process of the safety lock 40 is as follows: first, fix the baffle rod support 41 to the end wall column 2B, with the open side of the baffle rod support 41 facing the inner side of the box of the end wall 2; the baffle rod handle 43 faces the inner side of the box of the end wall 2, and the upper end of the baffle rod 42 is obliquely inserted into the upper baffle rod hole 45A of the baffle rod support 41 from the inner side of the box of the end wall 2, and the upper end of the baffle rod handle 43 is abutted against the top of the baffle rod support 41, and the spring 44 is sleeved on the lower end of the baffle rod 42; the lower end of the baffle rod 42 is aligned with the lower baffle rod hole 45B of the baffle rod support 41, and the spring 44 is compressed to make the lower end of the baffle rod 42 extend out from the lower baffle rod hole 45B of the baffle rod support 41; rotate the baffle rod handle 43 so that the baffle rod handle 43 enters the baffle rod handle groove 46, and the baffle rod handle 43 abuts against the upper end of the baffle rod handle groove 46 to complete the installation of the safety lock 40.

[0126] It can be understood that the blocking rod handle 43 is connected to the blocking rod 42 at the middle of the blocking rod 42, so that the blocking rod handle 43 can prevent the spring 44 from moving upward, thereby ensuring that the spring 44 can support the blocking rod 42 at the lower part of the blocking rod 42. Therefore, the lower part of the blocking rod 42 can also be as thick as the upper part of the blocking rod 42, or thicker than the upper part. The apertures of the upper blocking rod hole 45A and the lower blocking rod hole 45B are adapted to the diameters of the upper part and the lower part of the blocking rod 42, respectively.

[0127] As shown in FIG. 9 , in a preferred embodiment of the present invention, an inclined surface 42E is provided on the outer side of the box at the extended end of the blocking rod 42, and a horizontal edge 22E is provided on the lock handle 22. Fig.10As shown, when the lock handle 22 is locked, when the locking hook 21C passes through the opening of the lock hole 32 and enters the hook locking groove 33, in the process of rotating the lock handle 22 toward the pallet box until it is parallel to the end wall 2 (in the process of locking and storing the lock handle 22 of the pallet box lock 200), the horizontal side 22E of the lock handle 22 contacts the inclined surface 42E from the lower edge of the inclined surface 42E, and applies downward pressure to the inclined surface 42E, so that the spring 44 is compressed and the blocking rod 42 moves downward and retracts into the blocking rod support 41; when the lock handle 22 continues to rotate toward the pallet box to a certain angle (for example, after the lock handle 22 is stored), the horizontal side 22E separates from the inclined surface 42E from the upper edge of the inclined surface 42E, the spring 44 is decompressed, and the blocking rod 42 is extended upward again under the biasing force of the spring, so that the blocking rod 42 blocks the outer side of the horizontal side 22E (as shown in FIG. Figure 9a to realize automatic limit.

[0128] The locking operation of the pallet box lock 200 is exactly the same as that of the pallet box lock 100. When locked, the safety lock stopper 40 can realize automatic limit, and there is no need to operate the safety lock stopper 40. When the lock is opened, one hand needs to pull down the blocking lever handle 43 first, so that the upper end of the blocking lever 42 and the lock handle 22 are separated, and the other hand operates the lock handle 22 to open the lock. The lock can also be opened with one hand, such as pressing down the blocking lever handle 43 with the thumb, and operating the lock handle 22 with the other fingers.

[0129] It is understandable that the blocking rod 42 may also be disposed transversely and parallel to the end wall to block an edge portion of the lock handle 22 similar to the transverse edge 22E.

[0130] Only the limit lock block 50 or the safety lock block 40 can be set to limit the lock handle 22, or the limit lock block 50 and the safety lock block 40 can be set at the same time to limit the lock handle 22 together to achieve a double protection effect.

[0131] The pallet box lock 200 according to the second embodiment of the present invention improves the locking safety of the lock by providing a safety lock stopper 40 .

[0132] A second aspect of the present invention discloses a pallet box, which uses the pallet box lock according to the present invention, and thus can have a thin end wall. When the pallet box lock according to the present invention is used, the thickness of the end wall can be smaller than the size of the locking end of the locking rod (including the locking hook), and the thickness of the end wall can be 12-18 mm, and the diameter of the locking rod is 8-12 mm. For example, the diameter of the locking rod can be set to 10 mm, and the thickness of the end wall can be set to 15 mm.

[0133] The pallet box of the present invention effectively increases the volume of the pallet box, and the outer surface of the pallet box is neat, and no additional loading space is occupied during transportation, which can reduce logistics costs. The locking rod, the blocking rod and other components of the pallet box can be installed to the pallet box after pre-surface treatment. The installation method is convenient, no welding is required, and the surface treatment layer will not be damaged, which not only ensures the appearance, but also improves the corrosion resistance of the pallet box. The surface does not need to be repaired, which can also save manpower and material resources and reduce environmental pollution.

[0134] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pallet box, comprising an end wall and a side wall, wherein a pallet box lock is installed at an upper corner of the end wall on a side facing the outside of the pallet box, characterized in that: The pallet box lock comprises: A locking rod, the locking rod comprising a locking end for locking and a tail end opposite to the locking end, the locking end comprising a locking hook; A lock box, the lock box comprising: A first locking rod shaft hole is used to accommodate the tail end of the locking rod, A hook receiving groove, the size of which is larger than the size of the locking end to accommodate the locking hook, and a first mounting portion; and A locking rod support, the locking rod support comprising: a second locking rod shaft hole, through which the locking rod extends, and a second mounting portion, the second mounting portion being used to connect with the first mounting portion so as to mount the lock rod support to the lock box, in, The locking rod support is an integrated structure, and the locking rod support also includes an installation limit block. The lock box also includes: a lock rod mounting portion, the lock rod mounting portion being in communication with the hook head receiving groove and the first lock rod shaft hole and being used for mounting and accommodating the lock rod, and The installation limit groove is connected to the locking rod installation portion and is used to accommodate the installation limit block, wherein At least a portion of the locking rod mounting portion facing the mounting limit groove is configured as a through hole, and the column of the side wall comprises: a locking hole, wherein a side of the locking hole close to the outside of the pallet box is open, and a hole diameter of the locking hole is smaller than a size of the locking end; and A hook head locking groove, the hook head locking groove is located on a side of the lock hole away from the end wall, the size of the hook head locking groove is larger than the size of the locking end to accommodate the locking hook head, The thickness of the end wall is smaller than the size of the locking end.

2. The pallet box according to claim 1, characterized in that: The installation limit block is located on a side of the lock rod support opposite to the second installation portion, and the installation limit block protrudes from the top of the lock rod support. The installation limiting groove is located on a side of the lock box opposite to the hook head receiving groove.

3. The pallet box according to claim 1, characterized in that: The lock also includes a lock handle, which includes a connecting end connected to the lock rod and an operating end opposite to the connecting end, the connecting end is connected to the lock rod on the side of the lock rod support opposite to the locking hook head, the extension direction of the lock handle is the same as and parallel to the extension direction of the locking hook head, and the lock rod can rotate and / or translate together with the lock handle.

4. The pallet box according to claim 3, characterized in that: The connecting end of the lock handle is connected to the operating end through a bent portion, so that the operating end is farther away from the lock box than the connecting end.

5. The pallet box according to claim 3, characterized in that: The connecting end of the lock handle is configured as two parallel lock handle connecting arms. The lock box also includes a lock handle limit block. When the lock is locked, the lock handle connecting arm away from the locking hook head is located on a side of the lock handle limit block away from the locking hook head and abuts against the lock handle limit block.

6. The pallet box according to claim 5, characterized in that: The lock box also includes two lock handle baffles, which are respectively arranged on both sides of the lock handle limit block, and two lock handle storage spaces are formed between the two lock handle baffles and the lock handle limit block. When the lock is opened, the lock handle connecting arm of the lock handle close to the locking hook head is located in the lock handle storage space close to the locking hook head; when the lock is locked, the connecting arm of the lock handle away from the locking hook head is located in the lock handle storage space away from the locking hook head.

7. The pallet box according to claim 6, characterized in that: A protrusion is provided on one side of the two lock handle blocking pieces facing the lock handle limiting block, so as to prevent the lock handle connecting arm entering the lock handle storage space from escaping from the lock handle storage space.

8. The pallet box according to claim 3, characterized in that: The lock handle is configured in the form of a flat plate.

9. The pallet box according to any one of claims 1 to 8, characterized in that: The second mounting portion is a mounting through hole, the first mounting portion is a fixing hole, and the lock further comprises a rivet, which passes through the mounting through hole and is inserted into the fixing hole to connect the lock rod support to the lock box in a screw riveting manner.

10. The pallet box according to any one of claims 1 to 8, characterized in that: A receiving surface is provided below the first mounting portion, and when the locking rod support is connected to the lock box, the receiving surface contacts the locking rod support below the locking rod support.

11. The pallet box according to any one of claims 1 to 8, characterized in that: The locking rod mounting portion is integrally configured as a through hole.

12. The pallet box according to any one of claims 1 to 8, characterized in that: The pallet box lock also includes a safety lock stop, and the safety lock stop includes: A barrier rod support, the barrier rod support is fixed to the end wall column below the lock box, the top of the barrier rod support includes an upper barrier rod hole, and the side of the barrier rod support includes a barrier rod handle groove, a barrier rod, the barrier rod passing through the upper barrier rod hole and arranged in the barrier rod support, a lever handle connected to the middle of the lever and extending from the lever handle slot to the outside of the lever support, wherein the lever handle can move up and down in the lever handle slot, and A spring is sleeved on the lower part of the blocking rod, and the upper end of the blocking rod extends out of the upper blocking rod hole under the biasing force of the spring.

13. The pallet box according to claim 12, characterized in that: The bottom of the baffle support includes a lower baffle hole, wherein The sum of the compressed height of the spring and the distance from the spring to the upper end of the barrier rod is smaller than the distance between the upper barrier rod hole and the lower barrier rod hole, or The distance from the upper end of the shift lever handle to the lower end of the shift lever is smaller than the distance between the upper shift lever hole and the lower shift lever hole.

14. The pallet box according to claim 13, characterized in that: The pallet box lock also includes a locking handle, the upper end of the blocking rod is configured as an inclined surface, and the locking handle also includes a horizontal edge. During the process of locking the lock and storing the locking handle, the horizontal edge contacts and presses downward the inclined surface to retract the blocking rod into the blocking rod support. When the locking handle is stored, the blocking rod extends upward under the biasing force of the spring to block the horizontal edge.

15. The pallet box according to any one of claims 1 to 8, characterized in that: The side wall columns further include end wall stops, which are located outside the lock box when the pallet box is in an assembled state.

16. The pallet box according to claim 15, characterized in that The lock box includes a recessed portion for engaging the end wall stop.

17. The pallet box according to any one of claims 1 to 8, characterized in that The thickness of the end wall is 12-18 mm, and the diameter of the locking rod is 8-12 mm.

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