Handle mounting structure of storage box, storage box, and storage box combination

Abstract

A handle mounting structure of a storage box, comprising a box body (10) and a handle (40) connected to the box body (10) by means of pin shafts (80), wherein the outer wall of the box body (10) is provided with slots (70); the two opposite sidewalls of each slot (70) are respectively provided with a through hole (71); the inner wall of the box body (10) is provided with mounting openings (72) that are communicated with the through holes (71) in the axial direction and used for the pin shafts (80) to be mounted from the inside of the box body (10); the pin shafts (80) can be respectively inserted into the through holes (71) and shaft holes through the mounting openings (72); limiting components (83) capable of abutting against the end portions of the pin shafts (80) in an in-place mounting state and limiting the pin shafts (80) from being disengaged from the mounting openings (72) in the axial direction of the pin shafts are provided at the positions, close to the mounting openings (72), on the inner wall of the box body (10). The handle mounting structure simplifies the mounting process of the handle (40), and the pin shafts (80) are not easily disengaged after being mounted, thereby ensuring the mounting firmness of the handle (40). Also provided are a storage box having the handle mounting structure, and a storage box combination.

Description

Storage box handle installation structure, storage box and storage box combination Technical Field

[0001] The present invention relates to the technical field of storage boxes, and in particular to a handle mounting structure of a storage box, a storage box, and a storage box assembly. Background Art

[0002] Storage boxes (which can also be used as tool boxes) are convenient for users to store items. To facilitate the user's movement or transportation of the storage box, the storage box body is usually provided with a handle, which is rotatably mounted on the side wall of the box body. The side wall of the box body also has a groove. When not in use, the handle can be stored in the groove to avoid damage from contact with foreign objects.

[0003] For example, the Chinese utility model patent application with application number CN201420506920.6 (authorization announcement number: CN204108982U) discloses a toolbox, including a box body and a box cover, the upper surface of the box cover is provided with a second handle with a movably connected state, the heads at both ends of the second handle are arc-shaped, an open cavity is provided on the arc-shaped head, symmetrical connecting plates are provided on both sides of the open cavity, and concentric through holes are provided in the centers of the two connecting plates; the upper surface of the box cover is provided with a groove for placing the second handle, a side pit is provided in the middle of the groove, and axle pin holes are provided on both sides of the two ends of the groove, the axle pin is inserted into the axle pin hole and the through hole, and the axle pin and the through hole are movably matched.

[0004] However, the installation structure of the above-mentioned handle still has certain shortcomings. After the pin is installed in the pin hole, a limit stop part such as a nut and a gasket is provided at the end of the pin to achieve its axial limitation to prevent it from falling out of the pin hole. This installation method is very inconvenient, especially since the operating space inside the box is limited, which greatly reduces the assembly efficiency. The nut and gasket are also easy to fall off the pin, causing the pin to fall out of the pin hole.

[0005] Therefore, the existing handle installation structure of the storage box needs to be further improved.

[0006] Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide a handle installation structure for a storage box with high assembly efficiency and not prone to falling off, in view of the current status of the existing technology.

[0008] The second technical problem to be solved by the present invention is to provide a storage box using the above-mentioned handle installation structure.

[0009] The third technical problem to be solved by the present invention is to provide a storage box combination having the above storage box.

[0010] The technical solution adopted by the present invention to solve the first technical problem is: a handle installation structure for a storage box, comprising:

[0011] A box body and a handle connected to the outer wall of the box body through a pin;

[0012] The outer wall of the box body is provided with a slot for the end of the handle to be inserted therein, and the two side walls opposite to the slot are provided with a through-hole for the pin shaft to pass through. The inner wall of the box body is provided with a convex portion protruding toward the box body at a position corresponding to the slot, and the convex portion is provided with a mounting opening that is axially connected to the through-hole and for the pin shaft to be installed from the box body into the through-hole. The end of the handle is provided with an axial hole axially opposite to the through-hole, and the pin shaft can be inserted into the through-hole and the axial hole through the mounting opening. The inner wall of the box body is also provided with a limit member at a position adjacent to the mounting opening, which can abut against the end of the pin shaft in the installed state and limit the pin shaft from escaping from the mounting opening along its axial direction.

[0013] In order to facilitate the pin shaft to smoothly pass through the installation opening along the axial direction and be inserted into the axial hole of the handle, and to achieve positioning with the limiting piece after being installed in place, the limiting piece is a strip convex rib whose extension direction is consistent with the axial direction of the pin shaft. The strip convex rib has a first end away from the installation opening and a second end adjacent to the installation opening. The strip convex rib also has a second guide inclined surface that gradually inclines toward the position of the axis of the pin shaft from its first end to the second end.

[0014] In order to ensure the convenience of the pin shaft installation, when the pin shaft is installed in place, the end of the pin shaft adjacent to the installation opening is exposed outside the installation opening, and the end of the pin shaft exposed outside the installation opening has a first limit stop extending radially outward, and the limit piece and the first limit stop portion limit the axial direction of the pin shaft.

[0015] During installation, the main part of the pin shaft (except the first limit stop part) can be basically inserted into the installation opening along the axial direction. As the insertion depth of the pin shaft increases, the first limit stop part of the pin shaft will resist the limit member and continue to be inserted inward along the second guide slope. During this process, the pin shaft will be slightly tilted relative to the horizontal direction, but because the axial size of the first limit stop part itself is relatively small, the first limit stop part can also easily pass the maximum size position of the second guide slope of the limit member, and achieve axial limitation with the limit member after installation.

[0016] In order to conveniently install the handle into the slot of the box body, the end of the handle has at least one inserting piece adapted to the slot, and a first axial hole is formed on an inserting piece adjacent to the installation opening.

[0017] In order to further limit the axial position of the pin shaft, the outer peripheral wall of the pin shaft also has a limiting protrusion protruding radially outward. The pin shaft can be inserted into the through-hole and the first axial hole through the installation opening, and after being assembled into place, the limiting protrusion is limited on the outer peripheral edge of the first axial hole of the insert away from the side of the installation opening.

[0018] Due to installation requirements, the distance between the limiter and the installation port cannot be too small. If the limiter is used alone, the pin shaft will have slight axial offset and shaking problems. After the above-mentioned limiter protrusion is set on the pin shaft, the axial movable distance of the pin shaft is further reduced, thereby effectively improving the axial offset and shaking problems of the pin shaft.

[0019] In order to ensure the reliability of the handle installation, the end of the handle has at least two plug-ins arranged side by side, and the slots on the outer wall of the box body also have at least two slots arranged at intervals, wherein one of the plug-ins adjacent to the installation port is recorded as the first plug-in, and the other plug-in adjacent to the first plug-in and away from the installation port is recorded as the second plug-in, the first plug-in is provided with a first axial hole, and the second plug-in is provided with a second axial hole, and the limiting protrusion is limited on the outer edge of the first axial hole of the first plug-in, away from the installation port.

[0020] As an improvement, the slot corresponding to the first plug-in piece in the two adjacent slots on the outer wall of the box is recorded as the first slot, and the slot corresponding to the second plug-in piece is recorded as the second slot. A partition wall is formed on the portion of the outer wall of the box corresponding to the portion between the first slot and the second slot. The through holes on the side walls where the first slot and the second slot are close to each other are axially connected, thereby forming a through hole on the corresponding partition wall. The size of the through hole is larger than the size of the axial hole on the plug-in piece. After the pin shaft is assembled into place, the limiting protrusion on the pin shaft is located at the position of the through hole in the partition wall, and is axially limited between the outer peripheral edge of the first axial hole and the outer peripheral edge of the second axial hole facing each other.

[0021] By using a method of cooperating at least two inserts with slots, the limiting protrusion on the pin shaft can be hidden in the through hole on the partition wall between the two pins, making the insert and slot of the handle more compact and fitting, and less likely to cause shaking problems due to excessive gap between the insert and the slot.

[0022] In order to facilitate the installation of the pin shaft, the through holes on the side walls of the slot are all strip-shaped holes.

[0023] In order to enable the pin to be more smoothly inserted into the axial hole of the insert and to achieve limiting, the pin in the installed state has a first end adjacent to the installation opening and a second end away from the installation opening; there are multiple limiting protrusions on the pin, and they are arranged in sequence along the circumference of the pin, and each limiting protrusion has a first guide slope on the side wall facing the second end of the pin that gradually inclines radially from the inside to the outside toward the first end of the pin.

[0024] To prevent wobble caused by excessive clearance between the insert and the sidewalls of the slot due to machining accuracy issues, the handle insert is pivotally connected to the outer wall of the box via the pin. The insert's sidewalls also feature outwardly protruding stoppers that abut against the sidewalls of the slot. These stoppers also increase friction between the insert and the sidewalls of the slot, allowing the handle to remain in place at any deflection angle.

[0025] In order to further increase the friction between the handle's insert and the inner wall of the slot, so that the handle can be relatively firmly maintained in the folded state or the upright expanded state, the handle's insert is rotatably connected to the outer wall of the box body through the pin shaft, and the end periphery of the handle's insert is arc-shaped, and the end periphery position also has a limiting ridge extending radially outward along the insert, and the extension direction of the limiting ridge is consistent with the extension direction of the handle's main body.

[0026] In order to facilitate the use of the handle to move the storage box, the handle is generally U-shaped, and the two ends of the U-shaped handle are rotatably connected to the outer wall of the box body through two pins extending on the same axis.

[0027] In order to prevent the handle from touching foreign objects and being damaged, the end of the handle is rotatably connected to the outer wall of the box through a pin shaft. The handle has an expanded state relative to the outer wall of the box and a folded state relative to the box. The outer wall of the box also has a second storage recess for accommodating the handle in the folded state.

[0028] Another technical solution adopted by the present invention to solve the above-mentioned first technical problem is:

[0029] A handle mounting structure for a storage box, comprising: a box body and a handle connected to an outer wall of the box body via a pin shaft;

[0030] The outer wall of the box body is provided with a slot for the end portion of the handle to be inserted therein, and the two side walls opposite to the slot are provided with a through-hole for the pin shaft to pass through. The inner wall of the box body is provided with a convex portion protruding toward the box body at a position corresponding to the slot, and the convex portion is provided with a mounting opening that is axially connected to the through-hole and for the pin shaft to be installed into the through-hole from the box body. The end portion of the handle has a first axial hole axially opposite to the through-hole, and the outer peripheral wall of the pin shaft has a limiting protrusion protruding radially outward, and the pin shaft can be inserted into the through-hole and the axial hole through the mounting opening. After being assembled into place, the limiting protrusion is limited to the side of the first axial hole on the end portion of the handle away from the mounting opening.

[0031] As an improvement, the pin shaft has multiple limiting protrusions that are sequentially arranged along the circumference of the pin shaft. Providing a circle of spaced limiting protrusions on the pin shaft allows each limiting protrusion to have a certain amount of deformation space in the circumferential direction, thereby allowing each limiting protrusion of the pin shaft to pass through the shaft hole of the handle more smoothly.

[0032] In order to enable the pin to be inserted into the axial hole of the insert more smoothly and to achieve limiting, the pin in the installed state has a first end adjacent to the installation opening and a second end away from the installation opening, and each limiting protrusion has a first guide slope on the side wall facing the second end of the pin that gradually inclines radially outward toward the position of the first end of the pin.

[0033] In order to achieve a secure installation of the handle and the box body, the end of the handle has at least two plug-ins arranged side by side, and the one of the plug-ins close to the installation port is recorded as the first plug-in, and the one adjacent to the first plug-in and away from the installation port is recorded as the second plug-in. The first plug-in is provided with a first axial hole, and the second plug-in is provided with a second axial hole. The slots on the outer wall of the box body also have at least two corresponding slots arranged at intervals. Among the two adjacent slots on the outer wall of the box body, the slot corresponding to the first plug-in is recorded as the first slot, and the slot corresponding to the second plug-in is recorded as the second slot. The limiting protrusion on the pin shaft is limited to the side of the first axial hole on the first plug-in away from the installation port.

[0034] As an improvement, a partition wall is formed on the outer wall of the housing, corresponding to the portion located between the first and second slots. The perforations on the adjacent sidewalls of the first and second slots extend axially through the partition wall, thereby forming a through hole in the corresponding partition wall. The through hole is larger than the axial hole in the insert. When the pin is assembled, the limiting protrusion on the pin is located at the location of the through hole in the partition wall and is axially limited between the outer edges of the first and second axial holes, which face each other.

[0035] By using at least two inserts and slots to cooperate with each other, the limiting protrusion on the pin shaft can be hidden in the through hole on the partition wall between the two pins, making the insert and slot of the handle more compact and fitting, and less likely to cause shaking problems due to excessive gap between the insert and the slot.

[0036] The technical solution adopted by the present invention to solve the above second technical problem is:

[0037] A storage box comprises a box body and a handle arranged on the outer wall of the box body, wherein the handle is connected to the outer wall of the box body through the above-mentioned handle mounting structure of the storage box.

[0038] In order to facilitate users in pushing and pulling the storage box, it also includes a pull rod provided on the top wall of the box body. The pull rod is U-shaped as a whole, and is rotatably connected to the side wall of the box body through its two ends, and has an expanded state relative to the outer wall of the box body and a folded state relative to the outer wall of the box body. The handle and the pull rod are located on the same side wall of the box body, and the handle is located in the area enclosed by the pull rod in the folded state.

[0039] Since the pull rod and handle are both set on the top wall of the box, they will not occupy the storage space inside the box at the bottom and sides of the box. Therefore, items can be placed flatly in the box, improving the utilization rate of the storage space. Secondly, the pull rod is set on the top of the box, and the length of the pull rod does not need to be too long. When it is unfolded relative to the box, it can meet the height requirements for convenient push-pull operations for users. Therefore, it also reduces the degree of occupation of the storage space inside the box due to the installation of the pull rod on the box to a certain extent. In addition, the handle is set within the area enclosed by the U-shaped pull rod, which rationally utilizes the inner space area enclosed by the pull rod on the top wall of the box, making the arrangement of the pull rod and handle on the box more compact, which can meet the processing needs of smaller storage boxes.

[0040] In order to rationally utilize the space on the top wall of the box to install the handle and the pull rod, the outer wall of the box is provided with a first storage recessed area for accommodating the pull rod in the folded state, and the portion of the outer wall of the box corresponding to the portion enclosed by the pull rod in the folded state is recorded as a boss, and the handle is rotatably connected to the boss through the pin shaft, and has an expanded state relative to the outer wall of the box and a folded state relative to the outer wall of the box, and the boss has a second storage recessed area for accommodating the handle in the folded state.

[0041] In order to prevent the pull rod and handle from being damaged by foreign objects and to ensure the flatness of the top wall of the box, the pull rod is flush with the top surface of the side wall of the box in the folded state, and the handle is flush with the top surface of the side wall of the box in the folded state.

[0042] In order to optimize the design of the top wall space of the box body and make the best use of the top wall space, the pull rod includes two first vertical rod portions arranged side by side and a first cross rod portion connected between the ends of the two first vertical rod portions. The ends of the two first vertical rod portions of the pull rod are limitedly arranged on the top wall of the box body in a manner that they can rotate together around a first axis extending left and right. The first storage concave area on the box body includes first storage grooves spaced apart on the left and right. The two first storage grooves are respectively used to accommodate the two first vertical rod portions.

[0043] The handle is U-shaped as a whole, and includes two second vertical rods arranged side by side and a second horizontal rod connected between the ends of the two second vertical rods. The ends of the two second vertical rods are limitedly set on the outer wall of the box body in a manner that they can rotate together around a second axis extending left and right. The side walls of the two first receiving grooves adjacent to the position of the boss are respectively flush with the two side walls of the two second vertical rods of the handle that are away from each other in the left and right directions.

[0044] In order to facilitate users to pick up the handle or pull rod, it is opened to the expanded state, and a first operating gap for users to pick up the handle or pull rod is provided between the first cross bar portion of the pull rod in the folded state and the second cross bar portion of the handle in the folded state.

[0045] To facilitate the handle's removal, a recessed picking groove is formed on the bottom wall of the second storage recess, corresponding to the area adjacent to the handle's second crossbar. To remove the handle, a user can insert a finger from the side into the picking groove below the handle's second crossbar, grasp the handle, and then unfold it.

[0046] In order to further increase the operating space for the user to pick up the handle, a second operating gap for the user to pick up the handle is provided between the second crossbar portion of the handle in the folded state and the side edge of the boss.

[0047] To create the aforementioned second operating gap, the edge of the boss adjacent to the second crossbar portion of the handle has an inclined surface that slopes upward from bottom to top toward the second crossbar portion away from the handle. This inclined surface on the boss also better suits user operating habits, allowing the user's fingers to smoothly reach under the second crossbar portion.

[0048] Generally speaking, when the user pulls the storage box by means of a pull rod, the box body as a whole is in an inclined state. In order to save more effort, the pull rod needs to be fixed relative to the box body when it is in the expanded state. For this purpose, a locking assembly is also included on the outer wall of the box body. The locking assembly includes a locking member movably provided on the top wall of the box body. A locking position is provided on the pull rod. When the pull rod is rotated to the expanded state, the locking member can move toward the locking position of the pull rod until it is locked with the locking position, thereby keeping the pull rod in the above-mentioned expanded state.

[0049] In order to install the locking part on the outer wall of the box, a slide extending along the left and right directions is also provided on the side wall of the box. The locking part is a locking rod extending along the left and right directions. The locking rod is slid along the left and right directions in the slide. A positioning recess is provided on the side wall of the pull rod facing the slide as the locking position. The end of the locking rod can extend out of the slide and be inserted into the positioning recess of the pull rod to lock the pull rod relative to the box.

[0050] Generally speaking, the locking and unlocking of the locking rod can be achieved by manually moving the locking rod, but in order to achieve the purpose of automatic locking of the locking rod, the locking assembly also includes a first elastic member, which acts on the locking rod and makes the locking rod always have a tendency to move toward the position of the positioning recess of the pull rod and get stuck in the positioning recess.

[0051] The above-mentioned first elastic member can adopt various existing technologies and may include various elastic elements such as compression springs, torsion springs, and spring leaves. However, in order to better cooperate with the above-mentioned locking rod, the outer peripheral wall of the locking rod has a second limit stop extending radially outward. The first elastic member is a compression spring, which is sleeved on the locking rod and rests between the second limit stop of the locking rod and the inner wall of the slide.

[0052] In order to more conveniently unlock the locking rod, an unlocking button is also included which can be moved up and down on the top wall of the box body. When the unlocking button moves downward, it can act on the locking rod, thereby causing the end of the locking rod to withdraw from the positioning recess of the pull rod.

[0053] In order to smoothly convert the downward movement of the unlocking button into the left and right movement of the locking rod, the locking rod has a guide portion at a position adjacent to the unlocking button, and the guide portion has a guiding slope inclined from top to bottom toward the position of the positioning recess of the pull rod. The unlocking button has an extrusion slope consistent with the inclination direction of the guiding slope. When the unlocking button moves downward, the extrusion slope of the unlocking button slides and fits on the guiding slope, thereby driving the end of the locking rod to withdraw from the positioning recess of the pull rod.

[0054] In order to enable the unlock button to be reset smoothly without external force, it also includes:

[0055] The second elastic member acts on the unlocking button and makes the unlocking button always tend to move upward.

[0056] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: a storage box combination, including at least two boxes stacked in the upper and lower directions, wherein the box located at the bottom is recorded as the first box, and the box located at the top is recorded as the second box, the second box adopts the above-mentioned storage box, and the first box is provided with rollers.

[0057] As an improvement, the roller is located adjacent to the rear side wall of the first box, and the rotational connection between the pull rod and the second box is located adjacent to the rear side wall of the second box. The roller and the pull rod (in the expanded state) are located on the same side of the storage box combination, which can make the storage box combination more labor-saving to move.

[0058] In order to securely fix the boxes stacked up and down together, two adjacent boxes are locked together by a locking assembly.

[0059] Compared with the prior art, the advantages of the present invention are as follows: the pin is directly inserted into the through-hole on the side wall of the slot and the shaft hole of the handle from the mounting opening inside the box; after the pin is assembled in place, the pin is limited in the axial direction by the limiting piece on the inner wall of the box or by the limiting protrusion on the pin and the outer peripheral edge of the shaft hole on the handle, thereby preventing the pin from falling out of the through-hole in the slot and the shaft hole of the handle; this mounting structure does not require the installation of nuts and other components at the end of the pin as in the prior art, thereby simplifying the installation process of the handle and improving the assembly efficiency; the pin is not easy to fall out after installation, thereby ensuring the reliability of the handle installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] FIG1 is a schematic diagram of the three-dimensional structure of a storage box assembly according to an embodiment of the present invention;

[0061] FIG2 is a schematic diagram of the three-dimensional structure of the storage box assembly according to another embodiment of the present invention;

[0062] FIG3 is a partial structural exploded view of a storage box assembly according to an embodiment of the present invention;

[0063] FIG4 is a schematic diagram of the three-dimensional structure of the storage box assembly without the protective cover on the top thereof according to an embodiment of the present invention;

[0064] FIG5 is a top view of the storage box assembly shown in FIG1 ;

[0065] FIG6 is a cross-sectional view of the storage box assembly taken along the AA direction in FIG5 ;

[0066] FIG7 is a partial enlarged view of point A in FIG6 (the pull rod is in the retracted state);

[0067] FIG8 is a partial enlarged view of point A in FIG6 (the pull rod is in the extended state and locked by the locking assembly);

[0068] FIG9 is a partial enlarged view of point A in FIG6 (the pull rod is in the extended state and the locking assembly is in the unlocked state);

[0069] FIG10 is a schematic diagram of a partial structure of an embodiment of the present invention (the pull rod and handle are both in a folded state);

[0070] FIG11 is a schematic diagram of the three-dimensional structure of the storage box assembly in FIG10 without the pull rod.

[0071] FIG12 is a partial structural diagram of a storage box assembly according to an embodiment of the present invention (the pull rod and the handle are both in the unfolded state);

[0072] FIG13 is a vertical cross-sectional view of the handle and the cover at the rotational connection position according to an embodiment of the present invention;

[0073] FIG14 is a schematic diagram of the three-dimensional structure of the pin shaft according to an embodiment of the present invention;

[0074] FIG15 is an exploded view of the rotary connection structure between the handle and the cover according to an embodiment of the present invention;

[0075] FIG16 is a vertically cutaway perspective view of the handle and the cover at the rotational connection position according to an embodiment of the present invention (with the pull rod omitted);

[0076] FIG17 is a schematic diagram of the structure of FIG16 without the pin;

[0077] FIG18 is a schematic diagram of the three-dimensional structure of the cover body without the pull rod and the handle on the top of the cover body according to the embodiment of the present invention. DETAILED DESCRIPTION

[0078] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0079] In the present specification and claims, directional terms such as "front," "rear," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural components and elements of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because embodiments of the present invention can be arranged in various orientations, these terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily defined as directions opposite to or consistent with the direction of gravity.

[0080] Referring to Figures 1-18 , a preferred embodiment of a storage box and storage box assembly incorporating the handle mounting structure of the present invention is shown. The storage box assembly comprises at least two boxes stacked vertically, with the bottom box being designated as the first box 10a and the top box being designated as the second box 10b. Figure 1 shows three boxes stacked vertically, with the box in the middle being designated as the third box 10c.

[0081] The bottom of the first box 10a is provided with rollers 60 adjacent to the rear sidewall 101. The top of the sidewall of the first box 10a is locked to the bottom of the sidewall of the third box 10c via a locking assembly 15. The top of the sidewall of the third box 10c is also locked to the top of the sidewall of the second box 10b via a locking assembly 15. The locking assembly 15 can be a conventional flip lock assembly that locks and unlocks by flipping. A pull rod 30 and a handle 40 are provided on the top wall of the second box 10b. The second box 10b, the pull rod 30, and the handle 40 constitute the topmost storage box in the storage box combination.

[0082] In some embodiments, the storage box body (such as the second box body 10b in Figure 1) includes a box body 12 and a lid 11. In this embodiment, the top wall of the lid 11 is considered to be the top wall 100 of the box body 10. The box body 12 has an opening at the top, and the lid 11 is movably disposed at the opening of the box body 12. Specifically, the rear edge of the lid 11 is rotatably connected to the rear edge of the top opening of the box body 12 via a rotating shaft extending left and right. The handle 40 and the pull rod 30 are both provided on the lid 11 of the second box body 10b.

[0083] The pull rod 30 is U-shaped as a whole, and the U-shaped pull rod 30 includes two first vertical rod portions 31 arranged side by side and a first cross rod portion 32 connected between the ends of the two first vertical rod portions 31. The end positions of the two first vertical rod portions 31 away from the first cross rod portion 32 are respectively rotatably connected to the top of the cover body 11 through a rotating shaft extending on the same straight line (the axis of the rotating shaft is the first axis 300), wherein the position where the two first vertical rod portions 31 of the pull rod 30 are rotatably connected to the cover body 11 is adjacent to the rear edge of the cover body 11. The pull rod 30 has a folded state relative to the cover body 11 and an unfolded state relative to the cover body 11 as its rotational position changes. As shown in Figure 12, the unfolded state of the pull rod 30 of this embodiment is shown: the first cross rod portion 32 of the pull rod 30 is separated from the top wall 100, and the pull rod 30 as a whole stands on the top wall 100. FIG. 10 shows the folded state of the pull rod 30 of this embodiment: the first crossbar portion 32 of the pull rod 30 is close to the top wall 100 and is entirely embedded in the first receiving recessed area 111 of the top wall of the cover body 11 .

[0084] The top of the cover 11 is provided with a first receiving recessed area 111 for accommodating the pull rod 30 in the folded state. Adapting to the U-shaped structure of the pull rod 30, the first receiving recessed area 111 includes first receiving grooves 112 spaced apart in the left-right direction and a transverse recessed area 110 located in the front area of ​​the top of the cover 11. The two first receiving grooves 112 can accommodate the first vertical rod portion 31 of the pull rod 30, and the transverse recessed area 110 is a non-enclosed groove area that runs through the front edge of the cover 11 and can accommodate the first crossbar portion 32 of the pull rod 30.

[0085] The position on the cover 11 that is rotatably connected to the pull rod 30 is adjacent to the rear edge of the cover 11, so that the extension direction of the pull rod 30 in the unfolded state (after being locked by the locking assembly) is consistent with the extension direction of the rear side wall 101 of the box body 10. This makes it convenient for the user to apply force by the pull rod 30 (after being unfolded) to move the storage box. When the pull rod 30 is in the folded state, the first cross bar portion 32 of the pull rod 30 is located at the front edge of the cover 11. A clearance notch 13 is provided at the front edge of the cover 11 for the user to pick up the first cross bar portion 32 of the pull rod 30. The first cross bar portion 32 of the pull rod 30 in the folded state partially extends into the clearance notch 13. Since the first cross bar portion 32 of the pull rod 30 is partially exposed from the side of the cover 11, it is convenient for the user to pick up the first cross bar portion 32 of the pull rod 30 from the front.

[0086] The inner wall of the first receiving groove 112 has a retaining rib 22 protruding toward the location of the first vertical rod portion 31 of the pull rod 30. The side wall of the first vertical rod portion 31 of the pull rod 30 has a corresponding retaining groove 21. After the first vertical rod portion 31 of the pull rod 30 is placed in the first receiving groove 112, the retaining rib 22 on the inner wall of the first receiving groove 112 can be snapped into the retaining groove 21 of the first vertical rod portion 31, limiting the upward deflection of the pull rod 30, thereby maintaining the pull rod 30 in the retracted state and preventing it from easily falling out of the first receiving recess 111.

[0087] The portion of the cover 11 corresponding to the portion enclosed by the pull rod 30 in the folded state is recorded as a boss 113, wherein the handle 40 is rotatably connected to the boss 113. That is, the handle 40 is arranged in the area enclosed by the pull rod 30 on the top wall of the box. Specifically, the handle 40 is also U-shaped, and includes two second vertical rod portions 41 arranged side by side and a second cross rod portion 42 connected between the ends of the two second vertical rod portions 41. The ends of the two second vertical rod portions 41 away from the second cross rod portion 42 are rotatably connected to the boss 113 by pins 80 extending on the same straight line (the axis of the pin is the second axis 400). The handle 40 also has a folded state relative to the cover 11 and an expanded state relative to the cover 11 as its rotational position changes. FIG12 shows the handle 40 of this embodiment in its unfolded state: the second crossbar portion 42 of the handle 40 is separated from the top wall 100, and the handle 40 stands entirely on the top wall 100. FIG10 shows the handle 40 of this embodiment in its collapsed state: the second crossbar portion 42 of the handle 40 is close to the top wall 100 and entirely embedded in the second receiving recess 114 of the top wall of the lid 11. When both the lever 30 and the handle 40 are collapsed, the second crossbar portion 42 of the handle 40 is parallel to the first crossbar portion 32 of the lever 30, with a first operating gap 115 between them for a user to pick up either the handle 40 or the lever 30. As shown in FIG10 , the width of the first operating gap 115 is controlled to be narrow enough for a user's finger to fit within, allowing one of the lever 30 or the handle 40 to be grasped and lifted smoothly. This prevents both the lever 30 and the handle 40 from being lifted simultaneously due to the first operating gap 115 being too narrow. The two second vertical rods 41 of the handle 40 are parallel to the two first vertical rods 31 of the pull rod 30 and close to each other, wherein a slight gap in the left-right direction is sufficient between the first vertical rod 31 and the second vertical rod 41 .

[0088] As shown in Figure 12, the front portion of the boss 113 is formed with a second recessed area 114 for receiving the handle 40 in the stowed position. This second recessed area 114 communicates with the transverse recessed area 110 of the first recessed area 111, forming a relatively large recessed area. To protect the handle 30 and handle 40 from damage by foreign objects and to ensure the flatness of the top of the lid 11, the handle 40 and the handle 30 are flush with the top of the lid 11 when stowed.

[0089] The bottom wall of the second receiving recess 114 is slightly higher than the bottom wall of the first receiving recess 111. A recessed pickup groove 117 is formed on the bottom wall of the second receiving recess 114 in an area adjacent to the second crossbar 42 of the handle 40 (in FIG. 11 , the middle area of ​​the second crossbar 42 is shown). The bottom wall of the pickup groove 117 is substantially at the same height as the bottom wall of the first receiving recess 111. When the handle 40 is in the folded state, a second operating gap 116 is provided between the second crossbar 42 and the boss 113, allowing a user to pick up the handle 40. Specifically, to form this second operating gap 116, the boss 113 of this embodiment has an inclined surface 1130 on one side adjacent to the second crossbar 42 of the handle 40, sloping upward from the bottom toward the second crossbar 42 away from the handle 40. The missing portion of the boss 113 above the inclined surface 113 constitutes the second operating gap 116. The inclined surface 1130 on the boss 113 is also more in line with the user's operating habits, allowing the user's fingers to smoothly reach under the second crossbar portion 42. When the user picks up the handle 40, the user can enter the second operating gap 116 with their fingers, then reach into the picking groove 117 under the second crossbar portion 42 of the handle 40, grasp the handle 40, and then lift and unfold the handle 40.

[0090] Generally speaking, when the user pulls the storage box through the pull rod 30, the box body as a whole is in a tilted state. In order to save more effort, it is necessary to fix the pull rod 30 (in the expanded state) relative to the box body. The storage box of this embodiment also includes a locking assembly provided on the cover body 11, which includes a locking member 51 and a first elastic member 512.

[0091] A slide 14 extending in the left-right direction is provided at the rear edge of the top of the cover 11. The locking member 51 is a locking rod extending roughly in the left-right direction, and the locking rod is movably constrained in the above-mentioned slide 14. A positioning recess is provided on the side wall of the first vertical rod portion 31 of the pull rod 30 near its rotation center, serving as a locking position 310. The positioning recess is a through-hole structure that penetrates the first vertical rod portion 31 in the left-right direction. After the first vertical rod portion 31 of the pull rod 30 is placed in place in the first receiving groove 112, the end of the locking rod can extend out of the slide 14 and snap into the positioning recess of the pull rod 30, thereby locking the pull rod 30 relative to the top wall of the box body and keeping it in the expanded state.

[0092] The outer wall of the locking rod has a second stop 510 extending radially outward. In this embodiment, the first elastic member 512 is preferably a compression spring, which is mounted on the locking rod. Its first end abuts against the second stop 510, and its second end abuts against the inner wall of the slideway 14. Under the action of the first elastic member 512, the locking rod has a tendency to move toward the positioning recess of the pull rod 30 and engage therein.

[0093] The top of the cover body 11 of this embodiment is also provided with an unlocking button 52 and a second elastic member 53. The unlocking button 52 is movably provided on the top wall of the box body 10. Specifically, the cover body 11 has an installation chamber for placing the unlocking button 52, which is formed by the protective cover 140 being installed on the main body of the cover body 11. The protective cover 140 has an opening, and a portion of the top of the unlocking button 52 is exposed upward through the opening of the protective cover 140 to form a pressing portion 524 for the user to press, and the main body of the unlocking button 52 is limited to the bottom of the protective cover 140. In order to ensure that the unlocking button 52 can move up and down smoothly, the main body of the cover body 11 has a guide column 522 that extends up and down and is axially hollow, and the middle part of the bottom of the unlocking button 52 has a support column 118 that extends downward, and the support column 118 can extend into the interior of the guide column 522. In addition, the main body of the cover 11 is equipped with four guide rods 119 extending vertically. These four guide rods 119 are distributed around the guide posts 522. The unlock button 52 is provided with corresponding guide grooves 523 that are compatible with the guide rods 119. The second elastic member 53 is a compression spring that is mounted on the support post 118 of the unlock button 52. Its upper end abuts against the bottom of the unlock button 52, and its lower end abuts against the inner wall of the mounting chamber. When the unlock button 52 is not subjected to external force (for example, when the user is not pressing it), the second elastic member 53 allows the unlock button 52 to return upward to its initial position.

[0094] The lock rod has a guide portion 511 adjacent to the unlock button 52 (the guide portion 511 and the second position-limiting stop portion 510 described above may be the same component). The guide portion 511 has a guide slope 5110 that slopes downward from top to bottom toward the location of the positioning recess of the pull rod 30. Correspondingly, the unlock button 52 has an extrusion slope 521 that is aligned with the slope of the guide slope 5110. Specifically, the unlock button 52 is generally a cover structure that is smaller at the top and larger at the bottom. Its left and right sides have extension walls 520 that slope downward from top to bottom toward the left or right side. As shown in FIG7 , the distance between the left and right extension walls 520 gradually increases from top to bottom, forming an "eight" shape. The inner wall surface of the extension wall 520 of the unlock button 52 constitutes the aforementioned extrusion slope 521. When the unlocking button 52 moves downward, the extrusion slope 521 of the unlocking button 52 slides on the guide slope 5110 of the locking rod, thereby driving the end of the locking rod to withdraw from the positioning recess of the pull rod 30, thereby achieving the purpose of unlocking the pull rod 30.

[0095] The two first vertical rods 31 of the pull rod 30 are each provided with a positioning recess at their ends near their rotational centers. The corresponding locking rods also have two, one on each side of the unlock button 52 and located between the two first vertical rods 31 of the pull rod 30. When the unlock button 52 is pressed downward, its two extending walls simultaneously act on the guides 511 of the two locking rods, forcing the two locking rods toward each other and retracting into their corresponding slideways 14.

[0096] The handle mounting structure of the storage box is as follows: Referring to Figures 13-18 , a boss 113 of the box body is provided with slots 70 into which the two ends of the handle 40 are inserted. The slots 70 for connecting the two ends of the handle 40 are located on the left and right sides of the boss 113 and are positioned closer to the front. Furthermore, the boss 113 is formed by an upwardly recessed inner wall of the cover 11. The location for the slots 70 forms a step on the inner wall of the cover 11, which constitutes a protrusion 11a protruding from the inner wall of the box body 10 into the box body 10. Both ends of the handle 40 are rotatably connected to the opposite side walls of the slots 70 via horizontally extending pins 80. In order to facilitate the installation of the pin shaft 80, a mounting opening 72 is opened on the inner wall of the cover body 11, and the mounting opening 72 is axially connected with the through hole 71 on the side wall of the first slot 70a on the boss 113, so that the pin shaft 80 can be easily inserted from the inside of the box body 10 into the through hole 71 and the axial hole at the end of the handle 40.

[0097] The ends of the two second vertical rods 41 of the handle 40 have at least two tabs 420 arranged side by side, each of which has a transverse axial hole extending therethrough. In this embodiment, two tabs 420 are shown at the end of each second vertical rod 41. The tab adjacent to the mounting opening 72 is designated as the first tab 420a, and the tab further from the mounting opening 72 is designated as the second tab 420b. The first tab 420a has a first axial hole 423a, and the second tab 420b has a second axial hole 423b. To mate with the two tabs 420 on each second vertical rod 41, two slots 70 are provided on the boss 113 of the top wall of the case 10. The slot adjacent to the mounting opening 72 is designated as the first slot 70a, which is mated with the first tab 420a; the slot further from the mounting opening 72 is designated as the second slot 70b, which is mated with the second tab 420b. Specifically, each slot 70 is open at the top and front, with the front opening facing the side where the second crossbar 42 of the handle 40 is located when the handle 40 is folded. As shown in Figure 18, a partition wall 73 is formed on the boss 113 of the case 10, corresponding to the portion between two adjacent slots 70. The thickness of this partition wall 73 is equivalent to the width of the slot 70. Each slot 70 has a through-hole 71 formed on two opposing side walls, through which the pin 80 passes. The axial hole in the insert 420 of the handle 40 is axially opposed to these through-holes 71. The through-holes 71 on the adjacent side walls of the first slot 70a and the second slot 70b axially extend through each other, thereby forming a through-hole 730 in the corresponding partition wall 73. In this embodiment, the through-hole 730 and the through-holes 71 on the other side walls of the slot 70 are all vertically extending strip-shaped holes, and the through-hole 730 is larger than the axial hole in the insert 420.

[0098] As shown in FIG14 , a radially outwardly projecting stop protrusion 81 is provided on the outer peripheral wall of the central portion of the pin shaft 80. There are multiple stop protrusions 81 on the outer peripheral wall of the pin shaft 80, which are arranged sequentially along the circumference of the pin shaft 80. Each stop protrusion 81 has a first guide slope 810 for guiding the stop protrusion 81 through the axial hole in the insert 420. Specifically, when the pin shaft 80 is installed in place, it has a first end 801 adjacent to the mounting opening 72 and a second end 802 away from the mounting opening 72. The first guide slope 810 extends radially outward and is inclined toward the location of the first end 801 of the pin shaft 80.

[0099] The pin 80 can be inserted from within the housing 10 through the mounting opening 72 into the through-hole 71 and the shaft hole 423. Once fully assembled, the stopper protrusions 81 of the pin 80 are positioned at the outer edge of the first shaft hole 423a on the first insert 420a, on a side away from the mounting opening 72. The outer edge of each stopper protrusion 81 on the pin 80 is slightly larger than the shaft hole 423 of the insert 420, allowing the stopper protrusions 81 of the pin 80 to pass through the first shaft hole 423a on the first insert 420a under the action of an external force, and to prevent the pin 80 from retreating after passing through the first shaft hole 423a on the first insert 420a.

[0100] Because two slots 70 are provided in this embodiment, when the pin 80 is installed, the limiting protrusion 81 in the middle of the pin 80 is located where the through hole 730 of the partition wall 73 is located, and is axially limited between the outer edge of the first axial hole 423a of the first insert 420a and the outer edge of the second axial hole 423b of the second insert 420b. The axial dimension of the limiting protrusion 81 on the pin 80 is substantially consistent with the thickness of the partition wall 73, thereby preventing axial wobble or displacement of the pin 80. With the two inserts 420 mating with the slots 70, the limiting protrusion 81 on the pin 80 fits neatly within the through hole 730 of the partition wall 73 between the two pins, ensuring a more compact and snug rotational fit between the insert 420 of the handle 40 and the sidewall of the slot 70, and preventing wobble that might otherwise occur due to excessive clearance between the insert 420 and the slot 70.

[0101] The end of the pin 80 has a first stopper 82 extending radially outward. The outer diameter of the first stopper 82 is larger than the diameter of the mounting opening 72. A stopper 83 is also provided on the inner wall of the cover 11, adjacent to the mounting opening 72, to abut against the first stopper 82 of the pin 80. The stopper 83 is a strip-shaped rib extending in a direction aligned with the axial direction of the pin 80. The strip-shaped rib has a first end distal to the mounting opening and a second end proximal to the mounting opening. The strip-shaped rib has a second guide slope 830 that slopes gradually downward (i.e., away from the sidewall of the housing where it engages) from the first end to the second end. The portion of the strip-shaped rib that abuts against the first stopper 82 of the pin 80 does not need to be excessively large in its downward extension; it only needs to ensure that it can axially abut against the first stopper 82 of the pin 80 and that the main body of the pin 80 can be properly inserted axially into the through-hole 71 and the shaft hole. When the pin 80 is near its limit position during axial installation, the second guide slope 830 on the strip rib can guide the first limit stop 82 on the pin 80, so that the pin 80 can pass over the end of the strip rib more effortlessly.

[0102] The side walls of the insert 420 of the handle 40 of this embodiment also have outwardly protruding limit bumps 421. During the rotation of the handle 40, the limit bumps 421 can always abut against the side walls of the slot 70, thereby increasing the friction between the insert 420 and the side walls of the slot 70, thereby allowing the handle 40 to be maintained at any deflection angle. At the same time, it can also avoid the shaking problem caused by excessive gap between the insert 420 and the side walls of the slot 70 due to processing accuracy problems.

[0103] The end periphery of the insert 420 of the handle 40 is arc-shaped, and its end periphery position also has a limiting protrusion 422 extending radially outward. The extension direction of the limiting protrusion 422 is consistent with the extension direction of the second vertical rod portion 41 of the handle 40. When the handle 40 is rotated to the folded state position or the upright expanded position, the limiting protrusion 422 on the insert 420 can form an extrusion with the inner wall of the periphery of the slot 70, increasing the friction between the insert 420 of the handle 40 and the inner wall of the slot 70, so that the handle 40 can be relatively firmly maintained in the folded state or the upright expanded state.

[0104] 10 and 15 again, the through hole 71 on the slot 70 can be communicated with the first receiving groove 112 . Since the limiting protrusion 81 for limiting the axial movement of the pin shaft 80 is hidden in the through hole 730 of the partition wall 73, the end of the pin shaft 80 can be not exposed on the side wall of the first receiving groove 112, that is, the pin shaft 80 does not need to be additionally provided with nuts and washers at the end to limit the pin shaft as in the prior art. Therefore, the left and right side walls of the boss 113 can directly serve as the side walls of the first receiving groove 112 for receiving the first vertical rod portion 31 of the pull rod 30. As a result, the setting positions of the pull rod 30 and the handle 40 on the cover body 11 can be as close as possible. For example, in this embodiment, the side walls of the two first receiving grooves 112 on the cover body 11 adjacent to the boss 113 are respectively flush with the two side walls of the two second vertical rod portions 41 of the handle 40 that are away from each other in the left and right directions. This allows more space on the cover body 11 to be utilized, such as the space of the storage box 90 on the cover body 11 in Figure 17 can be made larger.

[0105] It is understandable that after the above-mentioned pull rod 30, handle 40 and roller 60 are provided on a single box, it can be used as a pull rod type storage box.

[0106] The handle installation structure of this embodiment is also applicable to the installation of non-movable handles, that is, the handle cannot be rotated after being installed in place on the box body, and the slot 70 shown in 18 only needs to be open at the top.

[0107] The use process of the pull rod and handle of the storage box of this embodiment is as follows:

[0108] When the storage box's lever function is needed, the user can pull the first crossbar 32 of the lever 30 and deflect it upward to the expanded state. Once the lever is fully deployed, the end of the locking rod, under the elastic action of the first elastic member 512, automatically snaps into the positioning recess of the first vertical rod 31 of the lever 30, locking the lever 30 relative to the box body and maintaining the lever 30 in the expanded state. In this expanded state, the lever 30 extends substantially vertically, that is, the direction of extension of the lever 30 is substantially perpendicular to the direction of extension of the top wall of the lid 11 of the box body. This allows the user to more conveniently and effortlessly push and pull the storage box using the lever 30. The lever 30 is located at the top of the box body 10, and the length of the lever 30 does not need to be excessively long. When deployed relative to the box body 10, it can meet the height requirements for convenient push-pull operations by the user. This, to a certain extent, reduces the amount of storage space occupied by the lever 30 on the box body 10. Of course, the pull rod 30 can also be folded to the top of the box body 10 and stored away, and the relatively short handle 40 can be flipped upward and unfolded to carry the storage box.

[0109] When the storage box is not in use, the pull rod 30 and the handle 40 can be flipped to a folded state. In this state, the pull rod 30 and the handle 40 are stored in the corresponding first storage recessed area 111 and the second storage recessed area 114. In this way, the top of the storage box is relatively flat and storage boxes can continue to be stacked on it.

[0110] The installation process of the handle 40 of the storage box of this embodiment is as follows:

[0111] The pin 80 is installed from the housing, with the inner end of the pin 80 aligned with the mounting opening 72 on the inner wall of the housing, and then inserted axially. When the pin 80 approaches its limit position in the axial installation process, the second guide slope 830 on the strip rib guides the first stop 82 on the pin 80, allowing the pin 80 to pass over the end of the strip rib with less effort. Simultaneously, the stop protrusion 81 on the pin 80 passes over the axial hole of one of the inserts 420 and rests at the location of the through hole 730 in the partition wall 73, simultaneously limiting the position of the pin 80 along the outer edges of the axial holes of the two inserts 420 on its left and right sides, preventing the pin 80 from moving left or right and coming out of the mounting opening 72. The strip rib also limits the first stop 82 of the pin 80 in the axial direction, preventing it from coming out of the mounting opening 72.

Claims

1. A handle installation structure for a storage box, comprising: Box body (10); A handle (40) connected to the outer wall of the box body (10) via a pin (80); The invention is characterized in that: the outer wall of the box body (10) is provided with a slot (70) for the end of the handle (40) to be inserted therein, and the two side walls opposite to the slot (70) are provided with through holes (71) for the pin shaft (80) to pass through, and the inner wall of the box body (10) is provided with a convex portion (11a) protruding toward the inside of the box body (10) at a position corresponding to the slot (70), and the convex portion (11a) has a through hole (71) which is axially connected with the through hole (71) and is provided for the pin shaft (80) to pass through the box body (10). The mounting opening (72) is inserted into the through hole (71), the end of the handle (40) is provided with an axial hole axially opposite to the through hole (71), the pin shaft (80) can be inserted into the through hole (71) and the axial hole through the mounting opening (72), and the inner wall of the box body (10) is also provided with a limiting member (83) adjacent to the mounting opening (72) which can abut against the end of the pin shaft (80) in the installed state and limit the pin shaft (80) from escaping from the mounting opening (72) along its axial direction.

2. The handle installation structure according to claim 1, characterized in that: The limiting member (83) is a strip-shaped convex rib extending in the same direction as the axial direction of the pin shaft (80), the strip-shaped convex rib having a first end away from the mounting opening (72) and a second end adjacent to the mounting opening (72), and the strip-shaped convex rib also has a second guiding inclined surface (830) which gradually inclines from the first end to the second end toward the position where the axis of the pin shaft (80) is located.

3. The handle installation structure according to claim 2, characterized in that: When the pin shaft (80) is installed in place, the end of the pin shaft (80) adjacent to the installation opening (72) is exposed outside the installation opening (72), and the end of the pin shaft (80) exposed outside the installation opening (72) has a first limit stop portion (82) extending radially outward, and the limit member (83) and the first limit stop portion (82) are limited in the axial direction of the pin shaft (80).

4. The handle installation structure according to claim 1, characterized in that: The end of the handle (40) has at least one inserting piece (420) adapted to the slot (70), and a first axial hole (423a) is provided on one of the inserting pieces (420) adjacent to the mounting opening (72).

5. The handle installation structure according to claim 4, characterized in that: The outer peripheral wall of the pin shaft (80) also has a limiting protrusion (81) protruding radially outward, and the pin shaft (80) can be inserted into the through hole (71) and the first shaft hole (423a) through the installation opening (72), and after being assembled in place, the limiting protrusion (81) is limited on the outer peripheral edge of the first shaft hole (423a) of the insert (420) on a side away from the installation opening (72).

6. The handle installation structure according to claim 5, characterized in that: The end of the handle (40) has at least two inserts (420) arranged side by side, and the outer wall of the box body (10) also has at least two slots (70) arranged at intervals, wherein one of the inserts adjacent to the installation opening (72) is recorded as a first insert (420a), and the other insert adjacent to the first insert (420a) and away from the installation opening (72) is recorded as a second insert (420b), the first insert (420a) is provided with a first axial hole (423a), and the second insert (420b) is provided with a second axial hole (423b), and the limiting protrusion (81) is limited on the outer peripheral edge of the first axial hole (423a) of the first insert (420a) on the side away from the installation opening (72).

7. The handle installation structure according to claim 6, characterized in that: Of the two adjacent slots (70) on the outer wall of the box body (10), the slot corresponding to the first inserting piece (420a) is recorded as the first slot (70a), and the slot corresponding to the second inserting piece (420b) is recorded as the second slot (70b). A partition wall (73) is formed on the outer wall of the box body (10) corresponding to the portion between the first slot (70a) and the second slot (70b). The through hole (71) on the side wall where the first slot (70a) and the second slot (70b) are close to each other. It penetrates in the axial direction, thereby forming a through hole (730) on the corresponding partition wall (73), the size of the through hole (730) is larger than the size of the axial hole on the insert (420), and after the pin shaft (80) is assembled in place, the limiting protrusion (81) on the pin shaft (80) is located at the position of the through hole (730) of the partition wall (73), and is axially limited between the outer peripheral edge of the first axial hole (423a) and the outer peripheral edge of the second axial hole (423b) facing each other.

8. The handle installation structure according to claim 7, characterized in that: The through holes (71) on the side wall of the slot (70) are all strip-shaped holes.

9. The handle installation structure of a storage box according to claim 5, characterized in that: The pin shaft (80) in the installed state has a first end adjacent to the installation opening (72) and a second end away from the installation opening (72); There are a plurality of limiting protrusions (81) on the pin shaft (80), which are arranged in sequence along the circumference of the pin shaft (80), and each limiting protrusion (81) has a first guiding inclined surface (810) on a side wall facing the second end of the pin shaft (80), which is gradually inclined radially outward toward the position of the first end of the pin shaft (80).

10. The handle installation structure according to claim 4, characterized in that: The inserting piece (420) of the handle (40) is rotatably connected to the outer wall of the box body (10) via the pin shaft (80), and the side wall of the inserting piece (420) also has a limiting protrusion (421) protruding outward and capable of abutting against the side wall of the slot (70).

11. The handle installation structure according to claim 4, characterized in that: The insert piece (420) of the handle (40) is rotatably connected to the outer wall of the box body (10) through the pin shaft (80); the end periphery of the insert piece (420) of the handle (40) is arc-shaped, and the end periphery position also has a limiting convex edge (422) extending radially outward along the insert piece (420); the extension direction of the limiting convex edge (422) is consistent with the extension direction of the main body of the handle (40).

12. The handle installation structure according to any one of claims 1 to 11, characterized in that: The handle (40) is U-shaped as a whole, and the two ends of the U-shaped handle (40) are rotatably connected to the side walls of the box body (10) via two pins (80) extending on the same axis.

13. The handle installation structure according to any one of claims 1 to 11, characterized in that: The end of the handle (40) is rotatably connected to the side wall of the box body (10) via a pin shaft (80); the handle (40) has an expanded state relative to the side wall of the box body (10) and a folded state relative to the box body (10); the side wall of the box body (10) also has a second storage recess (114) for accommodating the handle (40) in the folded state.

14. A handle installation structure for a storage box, comprising: A box body (10) and a handle (40) connected to the outer wall of the box body (10) via a pin (80); The invention is characterized in that: the outer wall of the box body (10) is provided with a slot (70) for the end of the handle (40) to be inserted therein, two side walls opposite to the slot (70) are provided with through holes (71) for the pin shaft (80) to pass through, and the inner wall of the box body (10) is provided with a convex portion (11a) protruding toward the inside of the box body (10) at a position corresponding to the slot (70), The convex portion (11a) has an installation opening (72) which is axially connected with the through hole (71) and is used for the pin shaft (80) to be installed from the box body (10) into the through hole (71); the end of the handle (40) has a first axial hole (423a) which is axially opposite to the through hole (71); the outer peripheral wall of the pin shaft (80) has a limiting protrusion (81) which protrudes radially outward; the pin shaft (80) can be inserted into the through hole (71) and the axial hole through the installation opening (72); and after being assembled in place, the limiting protrusion (81) is limited to the side of the first axial hole (423a) on the end of the handle (40) away from the installation opening (72).

15. The handle installation structure according to claim 14, characterized in that: There are a plurality of limiting protrusions (81) on the pin shaft (80), which are arranged in sequence along the circumference of the pin shaft (80).

16. The handle installation structure according to claim 15, characterized in that: The pin shaft (80) in the installed state has a first end adjacent to the installation opening (72) and a second end away from the installation opening (72), and each limiting protrusion (81) has a first guiding inclined surface (810) on a side wall facing the second end of the pin shaft (80) and gradually inclines radially outward toward the position of the first end of the pin shaft (80).

17. The handle installation structure according to claim 14, characterized in that: The end of the handle (40) has at least two inserts (420) arranged side by side, one of the inserts close to the installation opening (72) is recorded as a first insert (420a), and the other adjacent to the first insert (420a) and away from the installation opening (72) is recorded as a second insert (420b), the first insert (420a) is provided with a first axial hole (423a), the second insert (420b) is provided with a second axial hole (423b), and the outer wall of the box body (10) is provided with a plurality of inserts (420a). The slots (70) also correspond to at least two slots arranged at intervals. Of the two adjacent slots (70) on the outer wall of the box body (10), the slot corresponding to the first plug piece (420a) is recorded as the first slot (70a), and the slot corresponding to the second plug piece (420b) is recorded as the second slot (70b). The limiting protrusion (81) on the pin shaft (80) is limited to a side of the first shaft hole (423a) on the first plug piece (420a) away from the installation opening (72).

18. The handle installation structure according to claim 17, characterized in that: A partition wall (73) is formed on the outer wall of the box body (10) at a portion corresponding to the first slot (70a) and the second slot (70b), and the through holes (71) on the side walls of the first slot (70a) and the second slot (70b) that are close to each other are axially connected, thereby forming a through hole (730) on the corresponding partition wall (73), and the size of the through hole (730) is larger than the size of the axial hole on the insert (420). After the pin shaft is assembled in place, the limiting protrusion (81) on the pin shaft (80) is located at the position of the through hole (730) of the partition wall (73), and is axially limited between the outer peripheral edge of the first axial hole (423a) and the outer peripheral edge of the second axial hole (423b) facing each other.

19. A storage box, comprising a box body (10) and a handle (40) arranged on the outer wall of the box body (10), characterized in that: The handle (40) is connected to the outer wall of the box body (10) through the handle mounting structure of the storage box according to any one of claims 1 to 18.

20. The storage box according to claim 19, characterized in that: It also includes a pull rod (30) arranged on the top wall of the box body (10), the pull rod (30) is U-shaped as a whole, and is rotatably connected to the top wall of the box body (10) through its two ends, and has an expanded state relative to the top wall of the box body (10) and a folded state relative to the top wall of the box body (10), the handle (40) and the pull rod (30) are located on the same side wall of the box body (10), and the handle (40) is located in the area enclosed by the pull rod (30) in the folded state.

21. The storage box according to claim 20, characterized in that: The top wall of the box body (10) is provided with a first receiving recessed area (111) for accommodating the pull rod (30) in the folded state, and the portion on the top wall of the box body (10) corresponding to the portion enclosed by the pull rod (30) in the folded state is recorded as a boss (113), and the handle (40) is rotatably connected to the boss (113) via the pin shaft (80), and has an expanded state relative to the top wall of the box body (10) and a folded state relative to the top wall of the box body (10), and the boss (113) has a second receiving recessed area (114) for accommodating the handle (40) in the folded state.

22. The storage box according to claim 21, characterized in that: When in the folded state, the pull rod (30) is flush with the top surface of the top wall of the box body (10), and when in the folded state, the handle (40) is flush with the top surface of the top wall of the box body (10).

23. The storage box according to claim 21, characterized in that: The pull rod (30) comprises two first vertical rod portions (31) arranged side by side and a first cross rod portion (32) connected between the ends of the two first vertical rod portions (31); the ends of the two first vertical rod portions (31) of the pull rod (30) are limitedly arranged on the top wall of the box body (10) in a manner that they can rotate together around a first axis (300) extending left and right; the first storage recessed area (111) on the box body (10) comprises first storage grooves (112) arranged at intervals left and right, and the two first storage grooves (112) are respectively used to accommodate the two first vertical rod portions (31); The handle (40) is U-shaped as a whole, and comprises two second vertical rods (41) arranged side by side and a second horizontal rod (42) connected between the ends of the two second vertical rods (41), the ends of the two second vertical rods (41) are limitedly arranged on the top wall of the box body (10) in a manner that they can rotate together around a second axis (400) extending left and right, and the side walls of the two first receiving grooves (112) adjacent to the position of the boss (113) are respectively flush with the two side walls of the two second vertical rods (41) of the handle (40) that are away from each other in the left and right directions.

24. The storage box according to claim 23, characterized in that: A first operating gap (115) is provided between the first crossbar portion (32) of the pull rod (30) in the folded state and the second crossbar portion (42) of the handle (40) in the folded state for a user to pick up the handle (40) or the pull rod (30).

25. The storage box according to claim 23, characterized in that: A concave picking groove (117) is provided on the bottom wall of the second storage recessed area (114) at a location corresponding to the second crossbar portion (42) adjacent to the handle (40).

26. The storage box according to claim 21, characterized in that: A second operating gap (116) is provided between the second crossbar portion (42) of the handle (40) in the folded state and the side edge of the boss (113) for a user to pick up the handle (40).

27. The storage box according to claim 26, characterized in that: A side edge of the boss (113) adjacent to the second crossbar portion (42) of the handle (40) has an inclined surface (1130) inclined from bottom to top toward the second crossbar portion (42) away from the handle (40).

28. The storage box according to any one of claims 20 to 27, characterized in that: It also includes a locking assembly arranged on the top wall of the box body (10), the locking assembly includes a locking piece (51) movably arranged on the top wall of the box body (10), and a locking position (310) is provided on the pull rod (30). When the pull rod (30) is rotated to the unfolded state, the locking piece (51) can move toward the locking position (310) of the pull rod (30) until it is locked with the locking position (310), so that the pull rod (30) remains in the above-mentioned unfolded state.

29. The storage box according to claim 28, characterized in that: The side wall of the box body (10) is also provided with a slideway (14) extending in the left-right direction, and the locking member (51) is a locking rod extending in the left-right direction. The locking rod is slidably arranged in the slideway (14) in the left-right direction. A positioning recess is provided on the side wall of the pull rod (30) facing the slideway (14) as the locking position (310). The end of the locking rod can extend out of the slideway (14) and be inserted into the positioning recess of the pull rod (30) to lock the pull rod (30) relative to the box body (10).

30. The storage box according to claim 29, characterized in that: The locking assembly also includes a first elastic member (512), which acts on the locking rod and causes the locking rod to always have a tendency to move toward the location of the positioning recess of the pull rod (30) and to be stuck in the positioning recess.

31. The storage box according to claim 30, characterized in that: The outer peripheral wall of the locking rod has a second limit stop (510) extending radially outward, and the first elastic member (512) is a compression spring, which is sleeved on the locking rod and abuts between the second limit stop (510) of the locking rod and the inner wall of the slideway (14).

32. The storage box according to claim 31, characterized in that: It also includes an unlocking button (52) which is movably arranged on the top wall of the box body (10) and can act on the locking rod when the unlocking button (52) moves downward, so that the end of the locking rod is withdrawn from the positioning recess of the pull rod (30).

33. The storage box according to claim 32, characterized in that: The locking rod has a guiding portion (511) at a position adjacent to the unlocking button (52), and the guiding portion (511) has a guiding slope (5110) inclined from top to bottom toward the position of the positioning recess of the pull rod (30), and the unlocking button (52) has an extrusion slope (521) that is consistent with the inclination direction of the guiding slope (5110). When the unlocking button (52) moves downward, the extrusion slope (521) of the unlocking button (52) slides on the guiding slope (5110), thereby driving the end of the locking rod to withdraw from the positioning recess of the pull rod (30).

34. The storage box according to claim 33, characterized in that Also includes: A second elastic member (53) acts on the unlocking button (52) and enables the unlocking button (52) to always have a tendency to move upward.

35. A storage box assembly, comprising at least two boxes (10) stacked in an up-and-down direction, wherein: The box body (10) at the bottom is referred to as the first box body (10a), and the box body (10) at the top is referred to as the second box body (10b). The second box body (10b) is a storage box as described in any one of claims 20 to 34, and the first box body (10a) is provided with rollers (60).

36. The storage box assembly according to claim 35, characterized in that: The roller (60) is disposed adjacent to the rear side wall of the first box body (10a), and the rotational connection position between the pull rod (30) and the second box body (10b) is disposed adjacent to the rear side wall of the second box body (10b).

37. The storage box assembly according to claim 35, characterized in that: Two upper and lower adjacent boxes (10) are locked together via a locking assembly (15).

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