Lock components and tray boxes

Abstract

This application discloses a lock assembly and a pallet box. The lock assembly includes a lock housing, a lock pivot, and a lock handle. The lock housing has a first support wall and a second support wall, which together form a handle mounting groove. The lock housing also has a pivot support hole. The lock pivot passes through the pivot support hole and is equipped with a lock hook. The lock handle can swing between a hooked position where the lock hook engages with the end wall and an unlocked position where the lock hook disengages from the end wall. Along the length of the lock housing, the maximum dimension between the lock handle and the outer side is smaller than the dimension of the side post along the width of the side wall. Therefore, by setting the maximum dimension between the lock handle and the outer side to be smaller than the dimension of the side post along the width of the side wall, when the lock assembly is installed on the side wall of the pallet box, the semi-folding door can be as close as possible to the side post, and the dimension of the semi-folding door of the pallet box along the width of the side wall can be as large as possible, facilitating loading and unloading of goods through the door opening of the side wall.

Description

Technical Field

[0001] This application relates to the field of containers, and more specifically to locking assemblies and pallet boxes. Background Technology

[0002] The pallet box, including the semi-folding door, has a locking assembly installed on its side wall. The locking assembly is located at the upper end of a side post of the side wall. When the pallet box is in its assembled state, the locking assembly is used to hook onto the end wall to connect the end wall and the side wall. A door opening is provided at the upper end of the side wall. The semi-folding door is pivotally connected to the side wall for opening or closing the door opening.

[0003] The lock assembly includes a lock handle. Along the width of the side wall, the lock handle extends towards the center of the side wall, protruding from the side post. This is to avoid obstructing the view of the lock handle. Along the width of the side wall, there is a gap between the door opening and the side post. A portion of the lock handle is located within this gap between the door opening and the side post.

[0004] As a result, the width of the door opening along the side wall is small, making it inconvenient to load and unload goods through the door opening.

[0005] Therefore, this application provides a lock assembly and a tray box to at least partially solve the above-mentioned problems. Summary of the Invention

[0006] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed embodiments section. This summary section is not intended to limit the key features and essential technical features of the claimed technical solutions, nor is it intended to determine the scope of protection of the claimed technical solutions.

[0007] To at least partially solve the above-mentioned technical problems, this application provides a locking assembly for connecting to the top of a side post on the side wall of a pallet box for hooking onto the end wall of the pallet box. The locking assembly includes:

[0008] The lock box has a first support wall and a second support wall. The first support wall and the second support wall are spaced apart along the length direction of the lock box to form a handle mounting groove. The lock box is provided with a shaft support hole with an axial direction parallel to the length direction of the lock box. The shaft support hole is located on the first support wall and the second support wall.

[0009] A locking shaft is rotatably inserted through a shaft support hole, and a locking hook is provided at the end of the locking shaft that extends out of the first support wall and is away from the outer side of the second support wall.

[0010] The upper end of the lock handle is located in the handle mounting groove and is connected to the lock pivot so that the lock handle can swing between the hooked position where the lock hook is engaged with the end wall and the unlocked position where the lock hook is disengaged from the end wall. The maximum dimension between the lock handle and the outer side is smaller than the dimension of the side post along the width direction of the side wall along the length direction of the lock box.

[0011] According to the lock assembly of this application, the maximum dimension between the lock handle and the outer side is set to be smaller than the dimension of the side post along the width direction of the side wall. When the lock assembly is set on the side wall of the pallet box, the half-fold door can be as close as possible to the side post along the width direction of the side wall, and the dimension of the half-fold door of the pallet box along the width direction of the side wall can be as large as possible, so as to facilitate loading and unloading of goods through the door opening of the side wall.

[0012] Alternatively, when the lock handle is in the hook position, the lock handle does not protrude from the outer contour of the lock box.

[0013] Optionally, the lock box also includes a handle mounting groove bottom wall located at the bottom of the handle mounting groove, the handle mounting groove bottom wall and the outer surface of the lock box are spaced apart, the handle mounting groove bottom wall is provided with a handle mounting hole, when the lock handle is in the hook position, part of the lock handle is located in the handle mounting hole, and the inner surface of the lock handle is flush with the inner surface of the lock box.

[0014] Optionally, an operating part is provided at the lower end of the lock handle, and when the lock handle is in the hook position, there is a gap between the operating part and the bottom wall of the handle mounting groove.

[0015] Optionally, the lower end of the handle mounting groove extends along the length of the lock box to the side of the operating part away from the outer side, thereby forming the handle operating part.

[0016] Optionally, the lock box also has a third support wall and a fourth support wall, which are spaced apart along the length of the lock box to form a stop bar mounting groove. The lock box also has a stop bar support hole, the axial direction of which is parallel to the axial direction of the shaft support hole. The stop bar support hole is located on the third support wall and the fourth support wall and connects to the handle mounting groove.

[0017] The lock assembly also includes a stop bar, which is movably inserted through the stop bar support hole in the axial direction of the stop bar support hole between a limited position and an open position. The lock handle is provided with a stop bar limiting part, and the limiting end of the stop bar near the outer side in the limited position is provided on the outer side of the portion of the stop bar limiting part of the lock handle in the hook position to prevent the lock handle from swinging toward the unlock position.

[0018] Optionally, along the height direction of the lock box, the stop bar support hole is located between the shaft support hole and the lower end of the lock handle, and / or

[0019] The third and fourth support walls are both located on the side of the first support wall closer to the second support wall, and the stop bar limiting part is located at the end of the lock handle away from the outer side.

[0020] Optionally, the lock assembly also includes a stop lever operating member and a stop lever spring. The stop lever operating member is connected to the stop lever and is located at the stop lever mounting groove. When the stop lever is in the limited position, the stop lever operating member abuts against the third support wall. The stop lever spring is sleeved on the stop lever, with one end of the stop lever spring abutting against the stop lever operating member and the other end of the stop lever spring abutting against the fourth support wall, so as to apply a force to the stop lever operating member that can move the stop lever toward the limited position.

[0021] Optionally, at least one of the limiting end and the inner surface of the lock handle is provided with a ramp of a guide bar, and along the length direction of the lock box, the end of the ramp of the guide bar closer to the outer side is closer to the inner surface of the lock box than the other end farther away from the outer side.

[0022] Optionally, the inclined surface of the guide bar includes a guide bar inclined surface disposed at the limiting end.

[0023] The lock box also has an operation limiting part located at the stop bar mounting groove. The operation limiting part includes a first operation limiting part located on the upper side of the stop bar and a second operation limiting part located on the lower side of the stop bar. The stop bar operating member passes through the stop bar. The upper end of the stop bar operating member is located outside the box of the first operation limiting part, and the lower end of the stop bar operating member is located outside the box of the second operation limiting part, so that the first operation limiting part and the second operation limiting part can block the rotation of the stop bar operating member.

[0024] Optionally, a portion of the lock handle is recessed towards the inner surface of the lock handle housing to form a stop bar limiting portion. The limiting end of the stop bar in the limiting position is disposed on the outer side of the bottom wall of the stop bar limiting portion of the lock handle in the hook position to prevent the lock handle from swinging towards the unlock position.

[0025] Optionally, the operating limit part is configured to protrude outwards toward the lock box.

[0026] Optionally, when the lock handle is in the hook position, along the thickness direction of the lock box, the outer side of the second operating limit part is located outside the bottom wall of the stop bar limit part.

[0027] Along the height direction of the lock box, the lower end of the stop bar limiting part is located at the lower end of the second operation limiting part. The end of the second operation limiting part near the lock handle has a finger guide slope. Along the thickness direction of the lock box, the end of the finger guide slope near the outer side is closer to the inner surface of the lock box than the other end away from the outer side.

[0028] This application also provides a pallet box, the pallet box comprising:

[0029] Chassis;

[0030] end wall;

[0031] The side wall is provided with the aforementioned lock assembly.

[0032] According to the pallet box of this application, the pallet box includes the aforementioned locking assembly. The maximum dimension between the lock handle and the outer side is set to be smaller than the dimension of the side post along the width direction of the side wall. When the locking assembly is set on the side wall of the pallet box, the half-folding door can be as close as possible to the side post along the width direction of the side wall, and the dimension of the half-folding door of the pallet box along the width direction of the side wall can be as large as possible, so as to facilitate loading and unloading of goods through the door opening of the side wall.

[0033] Optionally, the pallet box also includes a folding door, which includes a bolt lock assembly located at the upper corner of the folding door.

[0034] At least one sidewall includes a central beam and side posts. Along the height direction of the sidewall, the central beam is located between the two ends of the sidewall. The two ends of the central beam are respectively connected to two side posts to form a door opening. The lower end of the lock box of the lock assembly is connected to the top of the side posts. One end of the folding door is pivotally connected to the central beam between the closed position of the covered door opening and the open position of the open door opening. When the folding door is in the closed position, the lock assembly is connected to a bolt lock assembly to fix the folding door in the closed position. Along the width direction of the sidewall, the folding door extends from one side post to the other side post.

[0035] Optionally, along the width direction of the sidewall, a portion of the inner side of the lock box near the center of the sidewall extends and protrudes towards the center of the sidewall to form a lock box connecting portion. The lock box connecting portion has a pin hole, the axial direction of which is parallel to the height direction of the sidewall.

[0036] The bolt lock assembly includes a bolt lock seat and a bolt rod. The bolt lock seat has a bolt support hole, the axial direction of which is parallel to the height direction of the half-fold door. The bolt rod is movably inserted through the bolt support hole along the axial direction of the bolt hole. When the half-fold door is in the closed position, part of the bolt lock seat is located below the lock box connection part, and the bolt rod extends into the bolt hole.

[0037] Optionally, the pin rod includes a first rod segment and a second rod segment, the diameter of the first rod segment being larger than the diameter of the second rod segment. The pin support hole includes a first hole segment and a second hole segment, the inner diameter of the first hole segment being larger than the inner diameter of the second hole segment. The pin lock assembly also includes a pin spring, which is sleeved on the second rod segment and located within the first hole segment. The first rod segment passes through the first hole segment, and the second rod segment passes through the second hole segment. One end of the pin spring abuts against the connecting surface of the first rod segment and the second rod segment, and the other end of the pin spring abuts against the connecting surface of the first hole segment and the second hole segment, so as to apply a force to the pin rod to cause the first rod segment to extend out of the first hole segment.

[0038] Optionally, the end face of the bolt lock seat near the center of the semi-folding door has a door handle mounting hole, which connects to the bolt support hole. The outer peripheral surface of the bolt rod has a bolt rod rack portion. The bolt lock assembly also includes a door handle and a door handle mounting pin. The door handle is provided with a door handle gear portion. The door handle passes through the door handle mounting hole and is rotatably connected to the bolt lock seat via the door handle mounting pin. The axial direction of the door handle mounting pin is parallel to the thickness direction of the semi-folding door. The door handle gear portion and the bolt rod rack portion mesh to drive the bolt rod to move along the axial direction of the bolt hole.

[0039] Optionally, along the width direction of the sidewall, the portion of the lock box connector near the center of the sidewall extends upward to form a hook-and-loop vertical wall. A gap exists between the hook-and-loop vertical wall and the second support wall along the width direction of the sidewall to form a door connection groove. The lock box is provided with a door connection groove notch communicating with the upper end of the door connection groove.

[0040] The seat body of the latch lock base extends upward to form the upper vertical wall of the lock base. The upper end of the upper vertical wall of the lock base protrudes away from the center of the folding door along the width direction of the folding door to form the top wall of the lock base. The end of the top wall of the lock base away from the upper vertical wall of the lock base extends downward to form a connecting hook. Along the height direction of the folding door, there is a gap between the free end of the connecting hook and the seat body to form a connecting notch.

[0041] When the half-folding door is in the closed position, part of the top wall of the lock seat is located inside the notch of the door connecting groove, and the connecting hook is located inside the door connecting groove.

[0042] Optionally, the lock box also includes a lock box upper wall, which is connected to the upper end of the second support wall. The lock box upper wall includes a connecting groove upper wall located at the door connecting groove. The connecting groove upper wall is located above the hook-and-connection vertical wall. Along the height direction of the side wall, there is a gap between the connecting groove upper wall and the hook-and-connection vertical wall to form a door connecting groove notch that communicates with the door connecting groove.

[0043] Optionally, a portion of the top surface of the upper wall of the lock box extends upward to form a stacking column, the lower surface of the upper wall of the connecting groove is constructed as a lower inclined surface of the upper wall of the connecting groove, and the top surface of the top wall of the lock seat is provided with an upper inclined surface of the connecting hook. When the half-folding door is in the closed position, the lower inclined surface of the upper wall of the connecting groove is located above the upper inclined surface of the connecting hook and is parallel to the upper inclined surface of the connecting hook.

[0044] Optionally, the lock box also includes a bottom wall of the door connection groove located at the inner end of the lock box. Attached Figure Description

[0045] To make the advantages of this application more readily apparent, the application briefly described above will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of this application and should not be considered as limiting its scope of protection. The application is described and explained with additional features and details through the drawings.

[0046] Figure 1 This is a perspective view of a pallet box according to a preferred embodiment of the present application, wherein the pallet box is in an assembled state and the half-folding door is in the closed position;

[0047] Figure 2 for Figure 1 A partially enlarged schematic diagram of point A in another direction of the pallet box, in which the pallet box is in the assembled state and the half-folding door is in the closed position;

[0048] Figure 3 for Figure 1 A three-dimensional diagram of the pallet box from another direction, in which the pallet box is in the assembled state and the half-folding door is in the open position;

[0049] Figure 4 for Figure 1 A three-dimensional schematic diagram of the locking assembly of the pallet box, wherein the lock handle is located in the hook position and the stop bar is located in the limit position;

[0050] Figure 5 for Figure 4 A three-dimensional schematic diagram of the lock box of the locking assembly of the pallet box from one direction;

[0051] Figure 6 for Figure 5 A three-dimensional schematic diagram of the lock box of the pallet box's lock assembly from another direction;

[0052] Figure 7 for Figure 5 A three-dimensional schematic diagram of the lock box of the pallet box's lock assembly from another direction;

[0053] Figure 8 for Figure 4A three-dimensional schematic diagram of the lock handle of the locking assembly of the pallet box in one direction;

[0054] Figure 9 for Figure 8 A three-dimensional schematic diagram of the lock handle of the locking assembly of the pallet box from another direction;

[0055] Figure 10 for Figure 1 A 3D schematic diagram of the semi-folding door of the pallet box;

[0056] Figure 11 for Figure 10 A magnified view of part B of the half-folding door of the pallet box;

[0057] Figure 12 for Figure 10 A partial enlarged cross-sectional view of section B of the semi-folding door of the pallet box; and

[0058] Figure 13 for Figure 10 A three-dimensional schematic diagram of the latch lock seat of the half-folding door of the pallet box.

[0059] Explanation of reference numerals in the attached figures

[0060] 100: Chassis; 110: Chassis pillars

[0061] 200: End wall; 210: Locking component

[0062] 211: Lockhole 220: End Post

[0063] 230: End beam; 300: Side wall

[0064] 310: Side pillars; 320: Half-folding door

[0065] 321: Door lintel 322: Door pillar

[0066] 323: Door panel; 324: Lower door beam

[0067] 330: Half-fold door hinge; 340: Door opening

[0068] 350: Side wall crossbeam; 400: Lock assembly

[0069] 410: Locking hook; 420: Locking shaft

[0070] 430: Lock handle; 431: Stop lever limit part

[0071] 432: Operating section; 433: Lock handle guide ramp

[0072] 434: Bottom wall of the stop lever limiting part; 435: Boss of the lock handle

[0073] 436: Glove tube section; 437: Operating section bevel.

[0074] 440: Handle mounting pin; 500: Lock box

[0075] 501: Locking hook mounting slot; 502: Stacking column

[0076] 503: Stacking surface; 504: Notch

[0077] 505: Second guide ramp of the half-fold door; 506: Outer side.

[0078] 510: Handle mounting slot; 511: First support wall

[0079] 512: Second support wall; 513: Shaft support hole

[0080] 514: Handle mounting hole; 515: Upper wall of lock box

[0081] 516: Lower wall of lock box; 517: Bottom wall of handle mounting groove

[0082] 518: Lower edge; 520: Stop bar mounting slot

[0083] 521: Third supporting wall; 522: Fourth supporting wall

[0084] 523: Stop bar support hole; 524: First operating limit part

[0085] 525: Second operating limit part; 526: Finger guide slope

[0086] 527: Spring mounting slot; 530: Handle operating part

[0087] 540: Door connecting groove; 541: Bottom wall of door connecting groove

[0088] 542: Upper wall of the connecting groove; 543: Lower slope of the upper wall of the connecting groove.

[0089] 544: Door connection groove notch; 550: Lock box connection part

[0090] 551: Pin hole; 552: Hook connection to vertical wall

[0091] 610: Stop lever; 611: Stop lever guide ramp

[0092] 620: Stop lever operating component; 621: Stop lever operating end

[0093] 630: Stop lever spring; 700: Bolt lock assembly

[0094] 701: First guide ramp of the half-fold door; 702: Connecting hook notch

[0095] 710: Pin lock seat; 711: Connecting hook.

[0096] 712: Connection notch; 713: Pin support hole

[0097] 714: Angled surface on the connecting hook head; 715: Mounting hole for the pin rod.

[0098] 716: Door handle mounting hole; 717: Door handle pin hole

[0099] 718: Rivet mounting slot; 720: Pin rod

[0100] 721: First segment 722: Second segment

[0101] 723: Pin rack section; 724: First hole section

[0102] 725: Second hole section; 726: Seat body

[0103] 727: Upper wall of the lock base; 728: Top wall of the lock base

[0104] 730: Bolt spring; 740: Door handle

[0105] 741: Door handle connecting part; 742: Door handle operating part

[0106] 743: Door handle connection hole; 744: Door handle gear section

[0107] 750: Door handle mounting pin Detailed Implementation

[0108] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0109] The preferred embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0110] In this document, ordinal numbers such as “first” and “second” used in this application are merely identifiers and do not have any other meaning, such as a specific order.

[0111] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0112] This application provides a lock assembly 400. The lock assembly 400 can be used in a tray box. When the lock assembly 400 is provided on the side wall 300 of the tray box, the size of the lock assembly 400 can be as small as possible along the width direction of the side wall 300. In this way, the side wall 300 can be provided with the largest possible door opening 340. The semi-folding door 320 connected to the side wall 300 for closing the door opening 340 can be as close as possible to the two side posts 310 of the side wall 300.

[0113] like Figures 1 to 3 As shown, the pallet box includes a base 100, two end walls 200, and two side walls 300. The two end walls 200 are pivotally connected to the two ends of the base 100 along a first horizontal direction D1. The two side walls 300 are pivotally connected to the two sides of the base 100 along a second horizontal direction D2. Thus, the pallet box has an assembled state and a folded state. When the pallet box is in the folded state, both the end walls 200 and the side walls 300 are stacked on top of the base 100. When the pallet box is in the assembled state, the plane containing the end walls 200 is perpendicular to the first horizontal direction D1, and the plane containing the side walls 300 is perpendicular to the second horizontal direction D2. When the pallet box is in the assembled state, the two end walls 200 are located inside the two side walls 300 along the second horizontal direction D2.

[0114] In this text, "inner side of the box" refers to the side of a first component near the center of the chassis along direction one when the pallet box is in its assembled state. "Outer side of the box" refers to the side of that first component away from the center of the chassis along direction one when the pallet box is in its assembled state. For example, the inner side of the side wall 300 along the second horizontal direction D2 is the side of the side wall 300 near the center of the chassis 100 along the second horizontal direction D2 when the pallet box is in its assembled state. The outer side of the side wall 300 along the second horizontal direction D2 is the side of the side wall 300 away from the center of the chassis 100 along the second horizontal direction D2 when the pallet box is in its assembled state.

[0115] "Inner surface of the container" refers to the surface of the first component near the center of the chassis 100 along direction one when the pallet container is in its assembled state. "Outer surface of the container" refers to the surface of the first component away from the center of the chassis 100 along direction one when the pallet container is in its assembled state. For example, the inner surface of the side wall 300 along the second horizontal direction D2 is the surface of the side wall 300 near the center of the chassis 100 along the second horizontal direction D2 when the pallet container is in its assembled state. The outer surface of the side wall 300 along the second horizontal direction D2 is the surface of the side wall 300 away from the center of the chassis 100 along the second horizontal direction D2 when the pallet container is in its assembled state.

[0116] Please refer to Figures 1 to 9 The lock assembly 400 includes a lock housing 500, a lock pivot 420, and a lock handle 430. The lock pivot 420 is provided with a lock hook 410. The lock assembly 400 can be mounted on the side wall 300. The end wall 200 includes a lock hole 211. When the tray box is in the assembled state, the lock hook 410 can rotate into the lock hole 211, thereby connecting the end wall 200 and the side wall 300. When the lock assembly 400 is disposed on the side wall 300 and the tray box is in the assembled state, the width direction of the side wall 300 is parallel to the first horizontal direction D1, the height direction of the side wall 300 is parallel to the height direction D3 of the chassis 100, the thickness direction of the side wall 300 is parallel to the second horizontal direction D2, the height direction of the lock box 500 is parallel to the height direction D3 of the chassis 100, the length direction of the lock box 500 is parallel to the first horizontal direction D1, the thickness direction of the lock box 500 is parallel to the second horizontal direction D2, the width direction of the end wall 200 is parallel to the second horizontal direction D2, the height direction of the end wall 200 is parallel to the height direction D3 of the chassis 100, and the thickness direction of the end wall 200 is parallel to the first horizontal direction D1.

[0117] like Figures 4 to 9 As shown, the lock box 500 has a first support wall 511, a second support wall 512, and a lock box upper wall 515. The length directions of both the first support wall 511 and the second support wall 512 extend along the height direction of the lock box 500. The upper ends of both the first support wall 511 and the second support wall 512 are connected to the lock box upper wall 515. The first support wall 511 and the second support wall 512 are spaced apart along the length direction of the lock box 500. Thus, a handle mounting groove 510 is formed in the lock box 500 at the interval between the first support wall 511 and the second support wall 512. When the lock box 500 is disposed on the side wall 300, along the width direction of the side wall 300, the first support wall 511 is located on the side of the second support wall 512 away from the center of the side wall 300.

[0118] The upper parts of both the first support wall 511 and the second support wall 512 have shaft support holes 513. The shaft support holes 513 penetrate both the first support wall 511 and the second support wall 512. The axial direction of the shaft support holes 513 is parallel to the length direction of the lock box 500. The locking shaft 420 is rotatably inserted through the shaft support holes 513. The surface of the first support wall 511 away from the second support wall 512 is the outer surface 506. A locking hook 410 is provided at the end of the locking shaft 420 extending beyond the outer surface 506 of the first support wall 511. When the lock box 500 is disposed on the side wall 300, the hook head end of the locking hook 410 protrudes from the inner surface of the side wall 300 along the second horizontal direction D2. The upper wall 515 of the lock box extends to the outer side of the first support wall 511 along the length direction of the lock box 500. Thus, the first support wall 511 and the upper wall 515 of the lock box constitute a locking hook mounting groove 501. The portion of the locking hook 410 is located within the locking hook mounting groove 501.

[0119] Please continue to refer to this. Figures 4 to 9 The upper end of the lock handle 430 is connected to the lock pivot 420. This allows the lock handle 430 to rotate between the hooked and unlocked positions, thereby rotating the lock pivot 420 and consequently the lock hook 410. When the lock assembly 400 is mounted on the side wall 300 and the tray box is in the assembled state, with the lock handle 430 in the hooked position, the hook head of the lock hook 410 enters the lock hole 211 of the end wall 200 to connect the end wall 200 and the side wall 300. When the lock assembly 400 is mounted on the side wall 300 and the tray box is in the assembled state, with the lock handle 430 in the unlocked position, the lock hook 410 leaves the end wall 200 to release the lock on the end wall 200, thereby releasing the connection between the end wall 200 and the side wall 300.

[0120] Please refer to Figure 2 and Figure 4 Along the length of the lock box 500, the maximum dimension H1 between the lock handle 430 and the outer side 506 is smaller than the dimension H2 of the side post 310 along the width of the side wall 300. Thus, with a smaller length dimension of the lock box 500, when the lock assembly 400 is used for a pallet box with a semi-folding door 320, the two side posts 310 of the side wall 300 can directly form the door opening 340 of the side wall 300. The semi-folding door 320 used to cover the door opening 340 can be as close as possible to the side post 310, and the dimension of the semi-folding door 320 along the width of the side wall 300 can be as large as possible, facilitating loading and unloading of goods.

[0121] In this embodiment, the maximum dimension H1 between the lock handle 430 and the outer side 506 is smaller than the dimension H2 of the side post 310 along the width direction of the side wall 300. When the lock assembly 400 is provided on the side wall 300 of the pallet box, the half-fold door 320 can be as close as possible to the side post 310 along the width direction of the side wall 300, and the dimension of the half-fold door 320 of the pallet box along the width direction of the side wall 300 can be as large as possible, so as to facilitate loading and unloading of goods through the door opening 340 of the side wall 300.

[0122] Preferably, when the lock handle 430 is in the hook position, the lock handle 430 is located inside the lock box 500 and does not protrude from the outer contour of the lock box 500. This facilitates the transport of the pallet box in its assembled state.

[0123] Preferably, such as Figure 4 , Figure 8 and Figure 9 As shown, the upper end of the lock handle 430 has a handle sleeve portion 436. The lower part of the lock handle 430 has an operating portion 432. The handle sleeve portion 436 has a cylindrical structure. The handle sleeve portion 436 is located within the gap between the first support wall 511 and the second support wall 512. The lock pivot 420 passes through the handle sleeve portion 436. The handle sleeve portion 436 is provided with a pin mounting hole whose axial direction is perpendicular to the axial direction of the handle sleeve portion 436. The lock assembly 400 also includes a handle mounting pin 440. The handle mounting pin 440 is preferably a resilient cylindrical pin. After the handle mounting pin 440 extends into the pin mounting hole, it passes through the lock pivot 420 to connect the handle sleeve portion 436 to the lock pivot 420, thereby connecting the lock handle 430 to the lock pivot 420.

[0124] Please refer to Figures 4 to 7 The lock box 500 also has a handle mounting groove bottom wall 517 located at the bottom of the handle mounting groove 510. The handle mounting groove bottom wall 517 is connected to the inner surface of the first support wall 511 along the thickness direction of the lock box 500, the inner surface of the second support wall 512 along the thickness direction of the lock box 500, and the inner surface of the upper wall 515 along the thickness direction of the lock box 500, thus forming the bottom wall of the handle mounting groove 510. The handle mounting groove bottom wall 517 and the outer surface of the lock box 500 along the thickness direction of the lock box 500 are spaced apart along the thickness direction of the lock box 500. Therefore, the lock box 500 has high strength.

[0125] like Figure 4 As shown, when the lock handle 430 is in the hook position, the outer surface of the operating part 432 along the thickness direction of the lock box 500 is approximately flush with the outer surface of the lock box 500 along the thickness direction of the lock box 500. This facilitates the transport of the pallet box in its assembled state.

[0126] Along the thickness direction of the lock box 500, the operating part 432 and the bottom wall 517 of the handle mounting groove are spaced apart to form an operating space for the finger-operated operating part 432. This facilitates the operation of the operating part 432.

[0127] Please return Figure 2 The end wall 200 includes a locking member 210, an end post 220, and an end upper beam 230. The end post 220 is located at both ends of the end wall 200 along its width direction. The locking member 210 is connected to the upper end of the end post 220. The locking member 210 is also connected to both ends of the end upper beam 230. The locking member 210 has a locking hole 211 on its outer surface along a second horizontal direction D2. When the pallet box is in its assembled state, the opening of the locking hole 211 faces the side wall 300. The side wall 300 also includes a side post 310. The side post 310 is located at both ends of the side wall 300 along its width direction. The lower wall of the lock box 500 is connected to the upper end of the side post 310. When the pallet box is in its assembled state, the end post 220 is located on the inner side of the side post 310 along the second horizontal direction D2.

[0128] When the pallet box is in the assembled state, the operating part 432 of the lock handle 430 is turned to rotate the hook head of the lock hook 410 into the lock hole 211, thereby connecting the end wall 200 and the side wall 300, or disengaging the hook head from the lock hole 211, thereby releasing the connection between the end wall 200 and the side wall 300.

[0129] like Figure 4 and Figure 5 As shown, the lock box 500 also has a lower wall 516 located at the lower end of the lock box 500. This increases the strength of the lock box 500. The upper end of the lock handle 430 is located below the upper wall 515 of the lock box. The lower end of the lock handle 430 is located above the lower wall 516 of the lock box. The upper end of the lock handle 430 is near the upper wall 515 of the lock box. The lower end of the lock handle 430 is near the lower wall 516 of the lock box. This allows the lock handle 430 to be as long as possible, reducing the operating force required to turn the lock handle 430.

[0130] Please continue to refer to this. Figure 4 and Figure 5The lock assembly 400 also includes a stop bar 610. The lock housing 500 further has a third support wall 521 and a fourth support wall 522. Both the third support wall 521 and the fourth support wall 522 are located below the second support wall 512. The upper ends of the third support wall 521 and the fourth support wall 522 are connected to the lower end of the second support wall 512. Along the length of the lock housing 500, the third support wall 521 is located on the side of the fourth support wall 522 near its outer surface 506. Along the length of the lock housing 500, both the third support wall 521 and the fourth support wall 522 are located on the side of the first support wall 511 near the second support wall 512. Along the length of the lock housing 500, the third support wall 521 and the fourth support wall 522 are spaced apart. Thus, the lock housing 500 forms a stop bar mounting groove 520 at the interval between the third support wall 521 and the fourth support wall 522.

[0131] Along the height direction of the lock box 500, the lower end of the third support wall 521 is located above the lower end of the first support wall 511. The lower end of the first support wall 511 is connected to one end of the lower wall 516 of the lock box. The lower end of the fourth support wall 522 is connected to the other end of the lower wall 516 of the lock box. Thus, the first support wall 511, the upper wall 515, the second support wall 512, the fourth support wall 522, and the lower wall 516 of the lock box form a circumferentially closed structure. The outer surfaces of the first support wall 511, the upper wall 515, the second support wall 512, the third support wall 521, and the fourth support wall 522 along the thickness direction of the lock box 500 are flush with the outer surfaces of the lower wall 516 along the thickness direction of the lock box 500. The lower end of the stop bar mounting groove 520 is connected to the handle mounting groove 510. Thus, the third support wall 521 serves as the partition wall between the handle mounting groove 510 and the stop bar mounting groove 520. That is, the third support wall 521 is both the groove wall of the handle mounting groove 510 and the groove wall of the stop bar mounting groove 520.

[0132] like Figure 4 and Figure 5As shown, both the third support wall 521 and the fourth support wall 522 are provided with a stop bar support hole 523. The stop bar support hole 523 penetrates through the third support wall 521 and the fourth support wall 522. The axial direction of the stop bar support hole 523 is parallel to the length direction of the lock box 500. The stop bar 610 passes through the stop bar support hole 523. Thus, along the axial direction of the stop bar support hole 523, the stop bar 610 can move between a limited position and a disengaged position. The end of the stop bar 610 near the first support wall 511 is the limited end. When the lock handle 430 is in the hook position, and the stop bar 610 is in the limited position, the limited end of the stop bar 610 extends out of the third support wall 521 and enters the handle mounting groove 510. At this time, the limited end is located on the outer side of the bottom wall 434 of the stop bar limiting part of the lock handle 430 along the thickness direction of the lock box 500. As a result, the lock handle 430 is prevented from leaving the hook position. With the stop lever 610 in the disengaged position, the limiting end moves away from the lock handle 430. At this time, the lock handle 430 can swing.

[0133] Please continue to refer to this. Figure 4 and Figure 5 The lock assembly 400 also includes a stop lever operating member 620 and a stop lever spring 630. The axial direction of the stop lever operating member 620 is perpendicular to the axial direction of the stop lever 610. The stop lever operating member 620 is connected to the stop lever 610. Specifically, the stop lever operating member 620 is preferably an internal hex bolt. A threaded through hole is provided on the stop lever 610. The axial direction of the threaded through hole is perpendicular to the axial direction of the stop lever 610. The stop lever operating member 620 is threadedly connected to the threaded through hole. The stop lever operating member 620 is located at the stop lever mounting groove 520. When the stop lever 610 is in the limited position, the stop lever operating member 620 abuts against the third support wall 521. In this way, the third support wall 521 can prevent the stop lever operating member 620 from continuing to move toward the first support wall 511, thereby preventing the stop lever 610 from leaving the fourth support wall 522. In addition, the stop lever 610 can be moved along the axial direction of the stop lever support hole 523 by actuating the stop lever operating member 620.

[0134] The stop spring 630 can be a cylindrical helical compression spring. The stop spring 630 is sleeved on the stop rod 610. One end of the stop spring 630 abuts against the stop rod operating member 620, and the other end abuts against the fourth support wall 522. The stop spring 630 is in a compressed state. Thus, the stop spring 630 can apply a force to the stop rod operating member 620. This force can move the stop rod 610 towards the limit position.

[0135] like Figure 4 and Figure 5As shown, the stop lever mounting groove 520 also has an operation limiting portion. The operation limiting portion includes a first operation limiting portion 524 and a second operation limiting portion 525. The first operation limiting portion 524 is located on the upper side of the stop lever 610. The second operation limiting portion 525 is located on the lower side of the stop lever 610. The upper end of the stop lever operating member 620 passes through the stop lever 610 and extends to the upper side of the stop lever 610. The upper end of the stop lever operating member 620 is located on the outer side of the first operation limiting portion 524 along the thickness direction of the lock box 500. The lower end of the stop lever operating member 620 is located on the outer side of the second operation limiting portion 525 along the thickness direction of the lock box 500. Specifically, the lower end of the stop lever operating member 620 is the stop lever operating end 621. The diameter of the stop lever operating end 621 is larger than the diameter of the rest of the stop lever operating member 620. The stop lever operating end 621 is close to the second operating limit part 525, and the upper end of the stop lever operating member 620 is close to the first operating limit part 524. In this way, the rotation angle of the stop lever operating member 620 can be reduced, preventing the stop lever operating member 620 from rotating and protruding outside the lock box 500 along the thickness direction of the lock box 500, and allowing the stop lever guide slope 611 (described later) to face the outside of the lock box 500 along the thickness direction of the lock box 500.

[0136] Specifically, the stop lever operating component 620 is a hex socket head cap screw. The bolt head of the hex socket head cap screw is the stop lever operating end 621. The outer peripheral surface of the bolt head is close to the second operating limit part 525, and the outer peripheral surface of the threaded end of the hex socket head cap screw is close to the first operating limit part 524.

[0137] It should be noted that in this article, "close to" refers to the minimum distance between two components ranging from 0mm to 5mm. For example, "close to the third component" means that the second component touches the third component (the minimum distance between the second and third components is 0mm), or the interval between the second and third components is less than or equal to 5mm and greater than 0mm.

[0138] Please continue to refer to this. Figure 4 and Figure 5 Along the height direction of the lock box 500, a first operating limit portion 524 and a second operating limit portion 525 are spaced apart. A spring mounting groove 527 is recessed on the outer surface of the lock box 500 along its thickness direction. The spring mounting groove 527 is located between the first operating limit portion 524 and the second operating limit portion 525. The spring mounting groove 527 provides mounting space for the stop spring 630. A portion of the stop spring 630 is located within the spring mounting groove 527. The first operating limit portion 524, the spring mounting groove 527, and the second operating limit portion 525 together constitute the bottom wall of the stop spring mounting groove 520. This facilitates the installation of the stop spring 630.

[0139] like Figure 4 , Figure 8 and Figure 9As shown, the portion of the lock handle 430 extending outward along the thickness direction of the lock housing 500 is recessed towards the inner surface of the lock handle 430 extending along the thickness direction of the lock housing 500 to form a stop bar limiting portion 431. Along the axial direction of the handle sleeve portion 436, the stop bar limiting portion 431 is located at the end of the lock handle 430 furthest from the first support wall 511. Along the height direction of the lock housing 500, the stop bar limiting portion 431 is located between the handle sleeve portion 436 and the operating portion 432.

[0140] The stop bar limiting part 431 opens towards the outer side of the lock handle 430 along the thickness direction of the lock box 500 and towards the fourth support wall 522. The stop bar limiting part 431 has a stop bar limiting part bottom wall 434. The stop bar limiting part bottom wall 434 is located at one end of the lock handle 430 near the inner side of the lock box 500 along the thickness direction of the lock handle 430. Along the height direction of the lock box 500, the stop bar support hole 523 is located between the shaft support hole 513 and the operating part 432. Thus, along the height direction of the lock box 500, the stop bar 610 is located below the lock pivot 420. Along the height direction of the lock box 500, the stop bar 610 is located at the middle of the lock handle 430. When the lock handle 430 is in the hook position and the stop bar 610 is in the limiting position, the limiting end of the stop bar 610 is located on the outer side of the stop bar limiting part bottom wall 434 along the thickness direction of the lock box 500.

[0141] The limiting end of the stop lever 610 has a stop lever guide slope 611 (an example of a guide slope for the stop lever). Along the length of the lock box 500, the end of the stop lever guide slope 611 near the first support wall 511 is closer to the inner surface of the lock box 500 along the thickness direction of the lock box 500 than the end away from the first support wall 511. The stop lever guide slope 611 faces the outer surface of the lock box 500 along the thickness direction of the lock box 500. The inner surface of the bottom wall 434 of the stop lever limiting portion has a lock handle guide slope 433 (another example of a guide slope for the stop lever). The position of the lock handle guide slope 433 corresponds to the position of the stop lever guide slope 611. Along the thickness direction of the lock box 500, the end of the lock handle guide slope 433 near the first support wall 511 is closer to the inner surface of the lock box 500 along the thickness direction of the lock box 500 than the end away from the first support wall 511. Thus, when the lock handle 430 is in the hook position, the tilt direction of the lock handle guide slope 433 is the same as the tilt direction of the stop bar guide slope 611.

[0142] With the lock handle 430 in the hooked position, the lower end of the stop bar limiting part 431 and the lower end of the second operation limiting part 525 are approximately flush along the height direction of the lock box 500. The lower end of the stop bar limiting part 431 is located below the lower end of the third support wall 521. The lower end of the stop bar limiting part 431 and the lower end of the third support wall 521 are spaced apart. This provides space for finger operation of the stop bar operating member 620.

[0143] like Figure 4 and Figure 5 As shown, the operating limit portion protrudes from the outside of the lock box 500 along the thickness direction of the lock box 500, beyond the bottom wall 517 of the handle mounting groove. Therefore, the lock box 500 has high strength at the operating limit portion.

[0144] When the lock handle 430 is in the hook position, the outer side of the second operation limiting part 525 along the thickness direction of the lock box 500 is located on the outer side of the bottom wall 434 of the stop lever limiting part along the thickness direction of the lock box 500. The end of the second operation limiting part 525 near the lock handle 430 has a finger guide ramp 526. Along the length direction of the lock box 500, one end of the finger guide ramp 526 near the first support wall 511 is closer to the inner surface of the lock box 500 along the thickness direction of the lock box 500 than the other end. When the stop lever operating member 620 is operated by a finger, the finger guide ramp 526 guides the movement of the finger, preventing the second operation limiting part 525 from obstructing the finger.

[0145] Please continue to refer to this. Figure 4 and Figure 5 The lower end of the handle mounting groove 510 extends along the length of the lock box 500 to the side of the operating part 432 away from the outer surface 506, thus forming the handle operating part 530. The bottom wall 517 of the handle mounting groove extends along the length of the lock box 500 to the side of the operating part 432 away from the outer surface 506, thus forming the bottom wall of the handle operating part 530. This provides operating space for fingers to be inserted into the gap between the operating part 432 and the bottom wall 517 of the handle mounting groove, facilitating operation.

[0146] Please refer to Figure 4The steps for opening the lock assembly 400 are as follows: Insert your index or middle finger into the gap between the operating part 432 and the bottom wall 517 of the handle mounting groove from the handle operating part 530; hook your index or middle finger onto the operating part 432; insert your thumb into the lower end of the stop bar limiting part 431, and then push the stop bar operating end 621 away from the first support wall 511 with your thumb, so that the stop bar 610 leaves the limiting position and the limiting end retracts into the third support wall 521, releasing the stop bar 610 from blocking the lock handle 430. During this process, the stop bar spring 630 is compressed; then lift the operating part 432 with your index or middle finger so that the lock hook 410 rotates and disengages from the lock hole 211, thus completing the opening of the lock assembly 400.

[0147] Please refer to Figure 4 The operation steps of locking the lock assembly 400 are as follows: Press the operating part 432 to rotate the lock handle 430, thereby causing the lock handle guide slope 433 to abut against the stop bar guide slope 611 of the stop bar 610; continue to press the operating part 432, and under the interaction of the lock handle guide slope 433 and the stop bar guide slope 611, the limiting end of the stop bar 610 moves away from the lock handle 430, and the stop bar spring 630 is compressed. When the bottom wall 434 of the stop bar limiting part of the lock handle 430 passes the stop bar 610, under the action of the stop bar spring 630, the stop bar 610 moves to the limiting position, so that the limiting end extends out of the third support wall 521 and enters the stop bar limiting part 431, thereby blocking the bottom wall 434 of the stop bar limiting part, and completing the automatic locking of the lock assembly 400.

[0148] Because the pallet box with locking assembly 400 locks when assembled (pallet box in assembled state), and unlocks after unloading to fold (pallet box in folded state), both locking and unlocking of the pallet box are performed when there is no goods inside. Therefore, the side walls 300 and end walls 200 of the pallet box are not subjected to external expansion forces from the goods during locking and unlocking. The operating force required for locking and unlocking the pallet box is not large. The structure of the lock handle 430 is sufficient for both locking and unlocking operations.

[0149] like Figures 4 to 9As shown, a handle mounting hole 514 is provided on a portion of the bottom wall 517 of the handle mounting groove. The handle mounting hole 514 is located at the interval between the first support wall 511 and the second support wall 512. The handle mounting hole 514 penetrates the lock housing 500. Along the height direction of the lock housing 500, the lower edge 518 of the handle mounting hole 514 is located at the lower end of the second operation limiting part 525. When the lock handle 430 is in the hooked position, a portion of the glove tube portion 436 and a portion of the bottom wall 434 of the stop bar limiting part are located within the handle mounting hole 514. When the lock handle 430 is in the hooked position, the inner surface of the lock handle 430 along the thickness direction of the lock housing 500 is flush with the inner surface of the lock housing 500 along the thickness direction of the lock housing 500. Therefore, when the thickness of the lock box 500 is relatively small, sufficient installation space can be provided for the lock handle 430 so that the dimension of the lock handle 430 along the thickness direction of the lock box 500 is as large as possible, thereby ensuring the strength of the lock handle 430.

[0150] When the lock handle 430 is in the hook position, the lower edge 518 of the handle mounting hole 514 abuts against the lock handle 430 to prevent the lock handle 430 from rotating toward the inside of the lock box 500 along the thickness direction of the lock box 500.

[0151] like Figure 1 , Figure 2 , Figure 3 and Figure 10 As shown, the pallet box includes a semi-folding door 320. At least one side wall 300 is provided with a semi-folding door 320. The side wall 300 with the semi-folding door 320 also includes a central beam 350. The length direction of the central beam 350 is parallel to the width direction of the side wall 300. Along the height direction of the side wall 300, both ends of the central beam 350 are respectively connected to the middle of two side columns 310. In this way, the central beam 350 and the portions of the two side columns 310 located above the central beam 350 form a door opening 340.

[0152] like Figure 10 As shown, the semi-folding door 320 includes a top beam 321, door posts 322, and a bolt lock assembly 700. The length direction of the top beam 321 is parallel to the width direction of the semi-folding door 320. The length direction of the door posts 322 is parallel to the height direction of the semi-folding door 320. There are two bolt lock assemblies 700. The bolt lock assemblies 700 are located at the upper corners of the semi-folding door 320. The bolt lock assemblies 700 are connected to the upper ends of the door posts 322. The bolt lock assemblies 700 are also connected to the ends of the top beam 321.

[0153] Please refer to Figure 1 , Figure 3 and Figure 10The semi-folding door 320 also includes a lower door beam 324. The length direction of the lower door beam 324 is parallel to the width direction of the semi-folding door 320. The side wall 300 also includes two semi-folding door hinges 330. The upper end of the semi-folding door hinge 330 is connected to the lower end of the door post 322 and the end of the lower door beam 324. The lower end of the semi-folding door hinge 330 is connected to the end of the middle crossbeam 350 in the side wall. In this way, the semi-folding door 320 can rotate between the closed position of the door opening 340 and the open position of the door opening 340. When the semi-folding door 320 is connected to the side wall 300, the width direction of the semi-folding door 320 is parallel to the width direction of the side wall 300.

[0154] Figure 1 , Figure 3 , Figure 10 As shown, along the width direction of the side wall 300, the doorpost 322 and side post 310 of the semi-folding door 320 are adjacent. The dimension of the semi-folding door 320 along its width direction is slightly smaller than the minimum distance between the two side posts 310. Thus, along the width direction of the side wall 300, the semi-folding door 320 extends from one side post 310 to the other. In this way, the semi-folding door 320 is nearly fully open, except for the partial protrusion of the door opening 340 in the lock box 500 of the lock assembly 400.

[0155] like Figures 1 to 3 , Figure 5 , Figure 6 , Figures 11 to 13 As shown, the lock box 500 is connected to the top of the side post 310. Along the width direction of the side wall 300, the inner portion of the lock box 500 near the center of the side wall 300 protrudes towards the center of the side wall 300 to form a lock box connecting portion 550. Thus, a notch 504 is formed below the lock box connecting portion 550. The lock box connecting portion 550 has a pin hole 551. The axial direction of the pin hole 551 is parallel to the height direction of the lock box 500.

[0156] The bolt lock assembly 700 includes a bolt lock seat 710 and a bolt 720. The bolt lock seat 710 includes a seat body 726. The seat body 726 has a bolt support hole 713. The axial direction of the bolt support hole 713 is parallel to the height direction of the folding door 320. The bolt 720 passes through the bolt support hole 713. The bolt 720 is movable in the bolt support hole 713. When the folding door 320 is in the closed position, the portion of the bolt lock seat 710 with the bolt support hole 713 is located within a notch 504, and the bolt 720 is inserted into the bolt hole 551. In this way, the upper end of the folding door 320 can be connected to the side wall 300 to fix the folding door 320 in the closed position.

[0157] like Figures 11 to 13As shown, the pin 720 is a stepped rod comprising a first segment 721 and a second segment 722. The upper part of the pin 720 is the first segment 721. The lower part of the pin 720 is the second segment 722. The diameter of the first segment 721 is larger than the diameter of the second segment 722. The pin support hole 713 is a stepped hole comprising a first hole segment 724 and a second hole segment 725. The upper part of the pin support hole 713 is the first hole segment 724. The lower part of the pin support hole 713 is the second hole segment 725. The inner diameter of the first hole segment 724 is larger than the inner diameter of the second hole segment 725. The pin lock assembly 700 also includes a pin spring 730. The pin spring 730 is sleeved on the second segment 722. The first segment 721 passes through the first hole segment 724. Part of the second segment 722 passes through the first hole segment 724, and another part passes through the second hole segment 725. The pin spring 730 is located within the first hole section 724. One end of the pin spring 730 abuts against the connecting surface of the first rod section 721 and the second rod section 722, and the other end of the pin spring 730 abuts against the connecting surface of the first hole section 724 and the second hole section 725. The pin spring 730 is in a compressed state. The pin spring 730 can apply a force to the pin rod 720, causing the upper end of the first rod section 721 to extend out of the pin support hole 713.

[0158] Please continue to refer to this. Figures 11 to 13 Along the width direction of the folding door 320, the end face of the base body 726 near the center of the folding door 320 has a door handle mounting hole 716. The door handle mounting hole 716 extends along the width direction of the folding door 320 to connect with the latch support hole 713. The base body 726 is provided with a door handle pin hole 717. The axial direction of the door handle pin hole 717 is parallel to the thickness direction of the folding door 320. The door handle pin hole 717 is located at the door handle mounting hole 716 to connect with the door handle mounting hole 716.

[0159] The outer peripheral surface of the first segment 721 of the bolt 720 has a bolt rack portion 723. The bolt lock assembly 700 also includes a door handle 740 and a door handle mounting pin 750. The door handle 740 is a flat piece. The middle portion of the door handle 740 has a door handle connecting portion 741. The door handle connecting portion 741 has a door handle connecting hole 743. The axial direction of the door handle connecting hole 743 is parallel to the thickness direction of the folding door 320. The door handle connecting portion 741 is located within the door handle mounting hole 716. The door handle mounting pin 750 passes through the door handle pin hole 717 and the door handle connecting hole 743. In this way, the door handle connecting portion 741 can rotate around the door handle mounting pin 750.

[0160] Along the width direction of the folding door 320, a door handle gear 744 is provided on the side of the door handle connecting portion 741 away from the center of the folding door 320. The door handle gear 744 meshes with the pin rack portion 723. Along the width direction of the folding door 320, a door handle operating portion 742 is provided on the other side of the door handle connecting portion 741 near the center of the side wall 300. Thus, rotating the door handle operating portion 742 causes the door handle connecting portion 741 to rotate. During this process, the door handle gear 744 and the pin rack portion 723 cooperate to drive the pin 720 to move up and down (moving along the axial direction of the pin support hole 713).

[0161] Please refer to Figure 2 , Figures 11 to 13 The steps for opening the half-folding door 320 are as follows: Hold the door handle operating part 742 and the upper door beam 321 of one bolt lock assembly 700 with one hand, and hold the door handle operating part 742 and the upper door beam 321 of another bolt lock assembly 700 with the other hand; rotate the door handle operating part 742 towards the upper door beam 321 with both hands to move the bolt 720 downwards; when the upper edge of the door handle 740 and the door handle mounting hole 716 abuts, the door handle 740 stops rotating, and the bolt 720 stops moving downwards. At this time, the bolt 720 retracts from the bolt hole 551; then flip the half-folding door 320 downwards to complete opening the half-folding door 320. After the half-folding door 320 is opened, the upper door beam 321 of the half-folding door 320 is located below the middle crossbeam 350 of the side wall, and the length direction of the door post 322 is parallel to the height direction of the side wall 300. At this time, under the action of the pin spring 730, the pin rod 720 returns to its original position and extends out of the pin support hole 713. It should be noted that the maximum distance between the door handle operating part 742 and the door upper beam 321 is such that it can be gripped by one hand at the same time.

[0162] Please refer to Figure 2 , Figures 11 to 13The operation steps for closing the half-folding door 320 are as follows: Lift the upper beam 321 of the half-folding door 320 upwards so that the bolt 720 abuts against the lock box connection part 550; hold the door handle operating part 742 and the upper beam 321 of one bolt lock assembly 700 with one hand, and hold the door handle operating part 742 and the upper beam 321 of the other bolt lock assembly 700 with the other hand; rotate the door handle operating part 742 towards the upper beam 321 with both hands to move the bolt 720 downwards; when the upper edge of the door handle 740 abuts against the door handle mounting hole 716, the door handle 740 stops rotating, and the bolt 720 stops moving downwards. At this time, the first segment 721 of the bolt 720 retracts into the bolt support hole 713, and then the half-folding door 320 is rotated until the length direction of the door post 322 is parallel to the height direction of the side wall 300, and the upper beam 321 is located above the middle crossbeam 350 of the side wall. Then, both hands release the door handle operating part 742. Under the action of the pin spring 730, the pin rod 720 moves upward, and the pin rod rack part 723 drives the door handle gear part 744 to rotate. When the lower edge of the door handle 740 abuts against the door handle mounting hole 716, the door handle 740 stops rotating, and the pin rod 720 stops moving. At this time, the pin rod 720 is inserted into the pin hole 551, completing the closing of the half-folding door 320.

[0163] It is understood that, in the embodiment not shown, a guide slope can be provided on the inner surface of the box along the thickness direction of the half-fold door at the upper end of the first rod segment. A guide slope is also provided on the lower end of the outer surface of the lock box connecting part along the thickness direction of the lock box. Thus, when closing the half-fold door, simply rotating the half-fold door causes the guide slope of the first rod segment to abut against the guide slope of the lock box connecting part. Under the cooperation of these two surfaces, the bolt moves downward, compressing the bolt spring. When the bolt and bolt hole are aligned, the bolt moves upward and inserts into the bolt hole under the action of the bolt spring, automatically closing the half-fold door. No operation of the bolt lock assembly is required. The steps for opening the half-fold door remain unchanged.

[0164] like Figures 5 to 7 As shown, along the height direction of the lock box 500, the end of the lock box connecting portion 550 away from the first support wall 511 extends upward and protrudes to form a hook-on upright wall 552. Along the length direction of the lock box 500, there is a gap between the hook-on upright wall 552 and the second support wall 512. Thus, the lock box 500 forms a door connecting groove 540 at the gap between the hook-on upright wall 552 and the second support wall 512. The lock box 500 also has a door connecting groove notch 544 communicating to the upper end of the door connecting groove 540.

[0165] Specifically, along the width direction of the side wall 300, the portion of the upper wall 515 of the lock box near the center of the side wall 300 is the upper wall 542 of the connecting groove. Along the length direction of the lock box 500, the upper wall 542 of the connecting groove is located at the door connecting groove 540. Along the height direction of the lock box 500, the door connecting groove 540 is located above the stop bar mounting groove 520. There is a gap between the top surface of the lock box connecting portion 550 and the upper wall 542 of the connecting groove to form a notch 544 in the door connecting groove. The door connecting groove 540 also has a bottom wall 541.

[0166] like Figure 3 , Figure 5 , Figure 7 , Figures 11 to 13 As shown, along the width direction of the folding door 320, the portion of the base body 726 near the center of the folding door 320 extends upward to form an upper vertical wall 727 of the lock base. The upper end of the upper vertical wall 727 extends and protrudes away from the center of the folding door 320 along the width direction of the folding door 320 to form a top wall 728 of the lock base. The end of the top wall 728 away from the upper vertical wall 727 extends downward to form a connecting hook 711. Along the height direction of the folding door 320, there is a gap between the connecting hook 711 and the base body 726 to form a connecting notch 712. Along the thickness direction of the folding door 320, the connecting notch 712 penetrates the bolt lock base 710.

[0167] like Figure 2 As shown, when the half-folding door 320 is in the closed position, part of the top wall 728 of the lock seat is located in the door connecting groove notch 544, the connecting hook 711 is located in the door connecting groove 540, and the lock box connecting part 550 is located in the connecting notch 712.

[0168] The connecting hook 711 engages with the door connecting groove 540 to restrict the relative movement of the half-fold door 320 and the side wall 300 along the width direction of the side wall 300. This strengthens the connection between the half-fold door 320 and the lock box 500, and consequently strengthens the connection between the half-fold door 320 and the side column 310. Specifically, when the end wall 200 is subjected to an outward expansion force along the first horizontal direction D1 by the cargo, the upper end of the side column 310 will deform along the width direction of the side wall 300 towards the outer side of the side column 310 along the first horizontal direction D1. At this time, the connecting hook 711 hooks onto the hooked wall 552, preventing the side column 310 from deforming. In this way, the engagement of the pin rod 720 and the pin hole 551 is not required to prevent the side column 310 from deforming along the width direction of the side wall 300. The pin hole 551 can be configured as an elongated hole. The long axis of the pin hole 551 is parallel to the width direction of the side wall 300. In this way, when the side column 310 is slightly deformed along the width direction of the side wall 300, it is convenient for the bolt 720 to be inserted into the bolt hole 551 when the half-folding door 320 is closed.

[0169] The inner surface of the box along the thickness direction of the half-fold door 320, connecting the hook 711, has a hook notch 702 and a first guide slope 701 for the half-fold door. Along the width direction of the half-fold door 320, the end of the first guide slope 701 near the center of the half-fold door 320 is closer to the outer surface of the half-fold door 320 along its thickness direction than the other end. The outer surface of the box along the thickness direction of the lock box 500, hooking the upright wall 552, has a second guide slope 505 for the half-fold door. Along the length direction of the lock box 500, the end of the second guide slope 505 near the first support wall 511 is closer to the inner surface of the lock box 500 along its thickness direction than the other end.

[0170] If, along the width direction of the side wall 300, the side column 310 deforms slightly towards the outer side of the box in the first horizontal direction D1, then during the closing process of the half-folding door 320, the first guide slope 701 of the half-folding door contacts the second guide slope 505 of the half-folding door. During the closing process of the half-folding door 320, under the guidance of the first guide slope 701 and the second guide slope 505, the half-folding door 320 can also close to the closing position. Therefore, when the side column 310 deforms, it facilitates the closing of the half-folding door 320.

[0171] In an embodiment not shown, a guide ramp can be provided on the outer side of the inner surface of the box along the thickness direction of the half-fold door, away from the upper wall of the lock seat, and on the vertical side of the slot opening of the second support wall, away from the first support wall, to facilitate the closing of the half-fold door when the side column deforms. The working principle of the guide ramp is the same as that of the first guide ramp and the second guide ramp of the half-fold door, and will not be described again here.

[0172] When the half-fold door 320 is in the closed position, the bottom wall 541 of the door connecting groove is located within the connecting hook notch 702, so that the inner surface of the base body 726 along the thickness direction of the half-fold door 320 is flush with the inner surface of the lock box 500 along the thickness direction of the lock box 500. The inner surface of the base body 726 along the thickness direction of the half-fold door 320 is flush with the inner surface of the half-fold door 320 along the thickness direction of the half-fold door 320. The inner surface of the lock box 500 along the thickness direction of the lock box 500 is flush with the inner surface of the side wall 300 along the thickness direction of the side wall 300. Thus, when the half-fold door 320 is in the closed position, the inner surface of the half-fold door 320 along the thickness direction of the half-fold door 320 is flush with the inner surface of the side wall 300 along the thickness direction of the side wall 300. Furthermore, the connecting hook 711 abuts against the bottom wall 541 of the door connecting groove to determine the position of the half-fold door 320 relative to the side wall 300 along the thickness direction of the side wall 300, thereby aligning the pin rod 720 and the pin hole 551 along the thickness direction of the side wall 300.

[0173] like Figure 5 , Figures 11 to 13 As shown, a portion of the top surface of the upper wall 515 of the lock box extends upward to form a stacking column 502. The top surface of the upper wall 515 of the lock box is a stacking surface 503. The stacking surface 503 is used to support another pallet box stacked above this pallet box. The provision of the upper wall 542 of the connecting groove increases the length dimension of the stacking surface 503 along the length direction of the lock box 500. This facilitates the stacking of pallet boxes with larger stacking holes. In addition, the provision of the upper wall 542 of the connecting groove increases the strength of the lock box 500.

[0174] The lower surface of the upper wall 542 of the connecting groove is constructed as a lower inclined surface 543 of the connecting groove upper wall. Along the length of the lock box 500, the end of the lower inclined surface 543 of the connecting groove upper wall that is away from the first support wall 511 is further away from the lower end of the lock box 500 than the other end. The top surface of the portion of the top wall 728 of the lock seat is constructed as a higher inclined surface 714 of the connecting hook. When the half-folding door 320 is in the closed position, the lower inclined surface 543 of the connecting groove upper wall and the higher inclined surface 714 of the connecting hook are correspondingly arranged. At this time, the lower inclined surface 543 of the connecting groove upper wall is located above the higher inclined surface 714 of the connecting hook and is parallel to the higher inclined surface 714 of the connecting hook. When stacked, the higher inclined surface 714 of the connecting hook can support the deformed upper wall 542 of the connecting groove. In addition, the arrangement of the lower inclined surface 543 of the connecting groove upper wall can increase the strength of the upper wall 542 of the connecting groove.

[0175] In an embodiment not shown, the upper wall of the connecting groove can also be omitted. In this case, when the half-folding door is in the closed position, the top surface of the lock seat top wall is flush with the stacking surface of the lock box.

[0176] like Figures 11 to 13 As shown, the door handle mounting pin 750 is a rivet. The outer and inner surfaces of the base body 726 along the thickness direction of the semi-folding door 320 are provided with rivet mounting grooves 718. The rivet mounting grooves 718 are located at the door handle mounting holes 716. After the rivet is installed, both ends of the rivet are located within the rivet mounting grooves 718 and do not protrude from the outer contour of the bolt lock base 710.

[0177] Please continue to refer to this. Figures 11 to 13 The top wall 728 of the lock seat has a pin mounting hole 715. The pin mounting hole 715 and the pin support hole 713 are concentric. The diameter of the pin mounting hole 715 is larger than the diameter of the pin 720. The pin 720 and the pin spring 730 can be inserted into the pin support hole 713 through the pin mounting hole 715.

[0178] like Figure 2 and Figure 8As shown, along the length of the lock housing 500, the portion of the lock handle 430 near the end face of the first support wall 511 protrudes outward to form a lock handle boss 435. When the lock handle 430 is in the hook position, the lock handle boss 435 and the first support wall 511 are in contact. Along the height direction of the lock housing 500, the lower end of the lock handle boss 435 is located near the stop bar 610. This reduces the contact area between the lock handle 430 and the first support wall 511, reduces friction, and increases the operational flexibility of the lock handle 430. Furthermore, the contact between the lock handle boss 435 and the first support wall 511 prevents the lock handle 430 from tilting outward along the length of the lock housing 500 due to assembly gaps or other reasons, thereby reducing the overlap between the stop bar 610 and the lock handle 430.

[0179] like Figure 9 As shown, the operating portion 432 of the lock handle 430 may be provided with an operating portion slope 437. The operating portion slope 437 is located at the end of the operating portion 432 on the inner surface of the lock housing 500 along the thickness direction, away from the first support wall 511. Along the length direction of the lock housing 500, the end of the operating portion slope 437 closer to the first support wall 511 is closer to the bottom wall 517 of the handle mounting groove than the other end. This increases the operating space for fingers to operate the operating portion 432 of the lock handle 430.

[0180] Please return Figure 1 and Figure 10 The semi-folding door 320 is connected to the lock assembly 400 via a bolt lock assembly 700. The upper door beam 321 forms the side upper beam of the pallet box as a single, continuous beam. Compared to existing non-fully-opening semi-folding door pallet boxes, the side upper beam has greater strength. In this embodiment, the side wall 300 with the semi-folding door 320 consists only of the door panel 323 of the semi-folding door and a lower side panel located below the door opening 340. The pallet box has fewer parts, a simpler structure, and lower cost.

[0181] In existing non-fully-opening semi-folding door pallet boxes, there is a gap between the semi-folding door and the side posts along the width direction of the side wall. Thus, the upper beam of the semi-folding door, and the two upper beams of the side walls located on either side of the semi-folding door along the width direction of the side wall, constitute the upper side beams of the pallet box. The side wall panels of the pallet box include the door panel of the semi-folding door, a lower side panel located below the door opening, and two upper side panels connected to the two upper side wall beams.

[0182] Please return Figure 1 and Figure 3The chassis 100 has chassis pillars 110 at its four corners. The chassis pillars 110 have elongated slots (not shown) extending along the height direction D3 of the chassis 100 on both the facade facing the end wall 200 and the facade facing the side wall 300. Both ends of the lower end wall beam of the end wall 200 have end wall hinge shafts extending outward along the length direction of the lower end wall beam. Both ends of the lower side wall beam of the side wall 300 have side wall hinge shafts (not shown) extending outward along the length direction of the lower side wall beam. The end wall hinge shafts and elongated slots engage to hinge the end wall 200 and the chassis pillars 110. The side wall hinge shafts and elongated slots engage to hinge the side wall 300 and the chassis pillars 110. The end wall 200 can be rotated and folded about the end wall hinge shafts to the end wall folded position of the chassis 100, and the side wall 300 can be rotated and folded about the side wall hinge shafts to the side wall folded position of the chassis 100. You can fold the end wall 200 first, and then fold the side wall 300.

[0183] This application also provides a pallet box. The pallet box can be the aforementioned pallet box.

[0184] In this embodiment, the pallet box includes the aforementioned locking assembly. The maximum dimension H1 between the lock handle 430 and the outer side 506 is smaller than the dimension H2 of the side column 310 along the width direction of the side wall 300. When the locking assembly 400 is provided on the side wall 300 of the pallet box, the half-folding door 320 can be as close as possible to the side column 310 along the width direction of the side wall 300. The dimension of the half-folding door 320 of the pallet box along the width direction of the side wall 300 can be as large as possible, which facilitates loading and unloading of goods through the door opening 340 of the side wall 300.

[0185] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

[0186] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “component” as used herein may refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” as used herein may refer to a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

Claims

1. A locking assembly for connecting to the top end of a side post of a side wall of a pallet box for hooking onto the end wall of the pallet box, characterized in that, The lock assembly includes: The lock box has a first support wall and a second support wall. The first support wall and the second support wall are spaced apart along the length direction of the lock box to form a handle mounting groove. The lock box is provided with a shaft support hole with the axial direction parallel to the length direction of the lock box. The shaft support hole is located on the first support wall and the second support wall. A locking shaft is rotatably inserted through the shaft support hole, and a locking hook is provided at the end of the locking shaft that extends out of the first support wall and is away from the outer side of the second support wall; A lock handle, the upper end of which is located in the handle mounting groove, the upper end of which is connected to the lock pivot, so that the lock handle can swing between a hooked position in which the lock hook is engaged with the end wall and an unlocked position in which the lock hook is disengaged from the end wall. Along the length of the lock box, the maximum dimension between the lock handle and the outer side is smaller than the dimension of the side post along the width of the side wall. The lock box also has a third support wall and a fourth support wall, which are spaced apart along the length of the lock box to form a stop bar mounting groove. The lock box also has a stop bar support hole, the axial direction of which is parallel to the axial direction of the shaft support hole. The stop bar support hole is located on the third support wall and the fourth support wall and communicates with the handle mounting groove. The lock assembly further includes a stop bar, which is movably inserted through the stop bar support hole along the axial direction between a limited position and an open position. The lock handle is provided with a stop bar limiting portion, and the limiting end of the stop bar near the outer side in the limited position is disposed on the outer side of the portion of the stop bar limiting portion of the lock handle in the hook position, so as to prevent the lock handle from swinging toward the unlock position.

2. The lock assembly according to claim 1, characterized in that, When the lock handle is in the hook position, the lock handle does not protrude from the outer contour of the lock box.

3. The lock assembly according to claim 1, characterized in that, The lock box also includes a handle mounting groove bottom wall located at the bottom of the handle mounting groove. The handle mounting groove bottom wall is spaced apart from the outer surface of the lock box. The handle mounting groove bottom wall is provided with a handle mounting hole. When the lock handle is in the hook position, part of the lock handle is located in the handle mounting hole, and the inner surface of the lock handle is flush with the inner surface of the lock box.

4. The lock assembly according to claim 3, characterized in that, An operating part is provided at the lower end of the lock handle. When the lock handle is in the hook position, there is a gap between the operating part and the bottom wall of the handle mounting groove.

5. The lock assembly according to claim 4, characterized in that, The lower end of the handle mounting groove extends along the length of the lock box to the side of the operating part away from the outer side, thereby forming the handle operating part.

6. The lock assembly according to claim 1, characterized in that, Along the height direction of the lock box, the stop bar support hole is located between the shaft support hole and the lower end of the lock handle, and / or The third support wall and the fourth support wall are both located on the side of the first support wall closer to the second support wall, and the stop bar limiting part is located at the end of the lock handle away from the outer side.

7. The lock assembly according to claim 1, characterized in that, The lock assembly further includes a stop lever operating member and a stop lever spring. The stop lever operating member is connected to the stop lever and is located at the stop lever mounting groove. When the stop lever is in the limited position, the stop lever operating member abuts against the third support wall. The stop lever spring is sleeved on the stop lever, with one end abutting against the stop lever operating member and the other end abutting against the fourth support wall, so as to apply a force to the stop lever operating member that can move the stop lever toward the limited position.

8. The lock assembly according to claim 7, characterized in that, At least one of the limiting end and the inner surface of the lock handle is provided with a guide bar inclined surface. Along the length direction of the lock box, the end of the guide bar inclined surface closer to the outer side is closer to the inner surface of the lock box than the other end farther away from the outer side.

9. The lock assembly according to claim 8, characterized in that, The inclined surface of the guide bar includes a guide bar inclined surface disposed at the limiting end. The lock box also has an operation limiting part located at the stop bar mounting groove. The operation limiting part includes a first operation limiting part located on the upper side of the stop bar and a second operation limiting part located on the lower side of the stop bar. The stop bar operating member passes through the stop bar. The upper end of the stop bar operating member is located outside the box of the first operation limiting part, and the lower end of the stop bar operating member is located outside the box of the second operation limiting part, so that the first operation limiting part and the second operation limiting part can block the rotation of the stop bar operating member.

10. The lock assembly according to claim 9, characterized in that, The portion of the lock handle is recessed towards the inner surface of the lock handle housing to form the stop bar limiting portion. The limiting end of the stop bar located at the limiting position is disposed on the outer side of the bottom wall of the stop bar limiting portion of the lock handle located at the hook position, so as to prevent the lock handle from swinging towards the unlock position.

11. The lock assembly according to claim 10, characterized in that, The operating limiting part is configured to protrude outwards toward the lock box.

12. The lock assembly according to claim 11, characterized in that, With the lock handle in the hooked position, along the thickness direction of the lock box, the outer side of the second operating limit part is located outside the bottom wall of the stop bar limit part. Along the height direction of the lock box, the lower end of the stop bar limiting part is located at the lower end of the second operation limiting part. The end of the second operation limiting part near the lock handle has a finger guiding slope. Along the thickness direction of the lock box, the end of the finger guiding slope near the outer side is closer to the inner surface of the lock box than the other end away from the outer side.

13. A pallet box, characterized in that, The pallet box includes: Chassis; end wall; A sidewall, wherein the sidewall is provided with a lock assembly according to any one of claims 1 to 12.

14. The pallet box according to claim 13, characterized in that, The pallet box also includes a folding door, which includes a bolt lock assembly located at the upper corner of the folding door. At least one of the sidewalls includes a central beam and side posts. Along the height direction of the sidewall, the central beam is located between the two ends of the sidewall. The two ends of the central beam are respectively connected to the two side posts to form a door opening. The lower end of the lock box of the lock assembly is connected to the top end of the side posts. One end of the folding door is pivotally connected to the central beam between a closed position that covers the door opening and an open position that opens the door opening. When the folding door is in the closed position, the lock assembly is connected to the bolt lock assembly to fix the folding door in the closed position. Along the width direction of the sidewall, the folding door extends from one side post to the other side post.

15. The pallet box according to claim 14, characterized in that, Along the width direction of the sidewall, a portion of the inner side of the lock box near the center of the sidewall extends and protrudes towards the center of the sidewall to form a lock box connecting portion. The lock box connecting portion has a pin hole, the axial direction of which is parallel to the height direction of the sidewall. The bolt lock assembly includes a bolt lock seat and a bolt rod. The bolt lock seat has a bolt support hole, the axial direction of which is parallel to the height direction of the half-fold door. The bolt rod is movably inserted through the bolt support hole along the axial direction of the bolt hole. When the half-fold door is in the closed position, a portion of the bolt lock seat is located below the lock box connection portion, and the bolt rod extends into the bolt hole.

16. The pallet box according to claim 15, characterized in that, The pin rod includes a first rod segment and a second rod segment, the diameter of the first rod segment being larger than the diameter of the second rod segment. The pin support hole includes a first hole segment and a second hole segment, the inner diameter of the first hole segment being larger than the inner diameter of the second hole segment. The pin lock assembly also includes a pin spring, the pin spring being sleeved on the second rod segment and located within the first hole segment. The first rod segment passes through the first hole segment, and the second rod segment passes through the second hole segment. One end of the pin spring abuts against the connecting surface of the first rod segment and the second rod segment, and the other end of the pin spring abuts against the connecting surface of the first hole segment and the second hole segment, so as to apply a force to the pin rod to cause the first rod segment to extend out of the first hole segment.

17. The pallet box according to claim 15, characterized in that, The end face of the bolt lock seat near the center of the folding door has a door handle mounting hole, which connects to the bolt support hole. The outer circumferential surface of the bolt rod has a bolt rod rack portion. The bolt lock assembly also includes a door handle and a door handle mounting pin. The door handle is provided with a door handle gear portion. The door handle passes through the door handle mounting hole and is rotatably connected to the bolt lock seat via the door handle mounting pin. The axial direction of the door handle mounting pin is parallel to the thickness direction of the folding door. The door handle gear portion and the bolt rod rack portion mesh to drive the bolt rod to move along the axial direction of the bolt hole.

18. The pallet box according to claim 15, characterized in that, Along the width direction of the sidewall, the portion of the lock box connecting part near the center of the sidewall extends upward to form a hook-and-loop vertical wall. Along the width direction of the sidewall, there is a gap between the hook-and-loop vertical wall and the second support wall to form a door connecting groove. The lock box is provided with a door connecting groove notch communicating with the upper end of the door connecting groove. The seat body of the latch lock base extends upward to form an upper vertical wall of the lock base. The upper end of the upper vertical wall of the lock base protrudes along the width direction of the folding door away from the center of the folding door to form a top wall of the lock base. The end of the top wall of the lock base away from the upper vertical wall of the lock base protrudes downward to form a connecting hook. Along the height direction of the folding door, there is a gap between the free end of the connecting hook and the seat body to form a connecting notch. When the half-folding door is in the closed position, a portion of the top wall of the lock seat is located within the notch of the door connecting groove, and the connecting hook is located within the door connecting groove.

19. The pallet box according to claim 18, characterized in that, The lock box also includes a lock box upper wall, which is connected to the upper end of the second support wall. The lock box upper wall includes a connecting groove upper wall located at the door connecting groove. The connecting groove upper wall is located above the hook-and-connection upright wall. Along the height direction of the side wall, there is a gap between the connecting groove upper wall and the hook-and-connection upright wall to form a door connecting groove notch that connects to the door connecting groove.

20. The pallet box according to claim 19, characterized in that, The top surface of the upper wall of the lock box extends upward to form a stacking column. The lower surface of the upper wall of the connecting groove is constructed as a lower inclined surface of the upper wall of the connecting groove. The top surface of the top wall of the lock seat is provided with an upper inclined surface of the connecting hook. When the half-folding door is in the closed position, the lower inclined surface of the upper wall of the connecting groove is located above the upper inclined surface of the connecting hook and is parallel to the upper inclined surface of the connecting hook.

21. The pallet box according to claim 18, characterized in that, The lock box also includes a bottom wall of the door connection groove located at the door connection groove, and the bottom wall of the door connection groove is located at the inner end of the lock box.

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