Folding Box

Abstract

The present invention provides a folding box. The folding box has a base, a pair of opposite first side panels and an adjacent pair of opposite second side panels, the first side panel and the second side panel are both hinged to the base and can be folded relative to the base. The folding box further includes an elastic member, the first end of the elastic member is detachably mounted on the inner side of one end of the second side panel. The second end of the elastic member is a free end and is provided with a first limiting portion and an actuating portion in sequence. The first side panel is provided with an operating mechanism and a locking portion, and the operating mechanism has an operating handle. The operating handle is arranged to be able to operably move between a first position and a second position relative to the first side panel, and the movement of the operating handle toward the second position applies a force to the actuating portion to elastically deform the elastic member so that the locking portion disengages from the limiting groove. The folding box of the present application is easy to lock and unlock and has low cost.

Description

Technical Field

[0001] The present invention relates to a logistics container, and more particularly to a folding box. Background Art

[0002] When the existing folding boxes are in use, the side panels need to be relatively unfolded and upright, and the two adjacent side panels are interlocked to form a relatively closed space to accommodate the goods. After the goods are emptied, in order to maximize cost savings, the box body needs to be folded and recycled, thereby reducing the cost of transporting the empty box.

[0003] When the side panels of the folding box are erected, a locking mechanism is required to lock the adjacent side panels to each other to achieve relative fixation. Most of the locking structures used in existing folding boxes have complicated operation steps and complex structures.

[0004] In addition, the existing folding boxes are in a state of being ready for shipment after being unfolded upright during use. When recycling, a pair of side panels need to be knocked to forcibly unlock the side panels. This operation is relatively laborious. Although it is convenient for mechanized operation to unlock, it is not conducive to manual operation. In particular, when knocking the side panels to unlock, the risk of the side panels being damaged is relatively high, and the side panels become consumables, and the maintenance cost of the later products is high.

[0005] Therefore, there is a need in the art for a locking structure that is easy and reliable to operate and has a simple structure, and a durable folding box having the locking structure. Summary of the invention

[0006] Based on the existing deficiencies, the present invention provides a locking device for a container to achieve convenient operation, while also reducing finished product parts and wearing parts, thereby improving product quality and life.

[0007] Specifically, the present invention provides a folding box, comprising a base, a pair of opposite first side panels and an adjacent pair of opposite second side panels, wherein the first side panels and the second side panels are both hinged to the base and can be folded relative to the base, wherein:

[0008] The folding box further comprises an elastic member, a first end of which is detachably mounted on the inner side of one end of the second side plate, and a second end of which is a free end and is provided with a first limiting portion and an actuating portion in sequence;

[0009] The first side plate is provided with an operating mechanism and a locking portion, wherein the operating mechanism has an operating handle;

[0010] The operating handle is arranged to be able to operably move between a first position and a second position relative to the first side plate, and the movement of the operating handle toward the second position applies a force to the actuating portion to elastically deform the elastic member so that the locking portion disengages from the first limiting portion.

[0011] In one embodiment, the elastic member is configured to reset when the operating handle moves from the second position to the first position.

[0012] In one embodiment, the second side plate is provided with a mounting hole, and the first end of the elastic member is detachably mounted on the mounting hole.

[0013] In one embodiment, the cross section of the first end of the elastic member is T-shaped, and the cross section of the mounting hole is T-shaped.

[0014] In one embodiment, a recess is formed on the inner surface of the second side plate at a position corresponding to the elastic member.

[0015] In one embodiment, the top surface of the recess is spaced apart from the top surface of the elastic member by a predetermined distance; or the bottom surface of the recess is spaced apart from the back surface of the elastic member by a predetermined distance. The predetermined distance is set so that the elastic member has space to deform upward. In one embodiment, the mounting hole is set on one side of the recess.

[0016] In one embodiment, ends of the first limiting portion and the second limiting portion extend beyond the inner surface of the second side plate.

[0017] In one embodiment, the operating handle is further arranged to apply an upward force to the actuating portion when moving toward the second position, so that the elastic member is elastically deformed upward.

[0018] In one embodiment, the third limiting protrusion protrudes from the rear side surface of the mounting portion.

[0019] In one embodiment, the second end of the elastic member is further provided with a second limiting portion, a limiting groove is formed between the first limiting portion and the second limiting portion, and the actuating portion is disposed on the second limiting portion.

[0020] In one embodiment, a lower surface of the first limiting portion of the elastic member is provided with a guiding inclined surface, and a lower surface of the second limiting portion is a driving surface.

[0021] In one embodiment, the elastic member has a long strip body, one end of which is provided with a mounting portion, and the other end is provided with a first limiting protrusion and a second limiting protrusion which protrude from the long strip body toward the inner side of the folding box and are spaced apart from each other, wherein the lower surface of the first limiting protrusion is provided with a guide slope.

[0022] In one embodiment, a third limiting protrusion protrudes from the surface of the mounting portion, a second limiting groove is provided in the mounting hole, and the third limiting protrusion is engaged with the second limiting groove.

[0023] In one embodiment, the operating mechanism is further provided with a handle restoring member, wherein the handle restoring member is associated with the operating handle and biases the operating handle toward the first position.

[0024] In one embodiment, the handle reset member is detachably mounted on the top end of the operating handle.

[0025] In one embodiment, the operating handle comprises an operating grip and handle driving parts at both ends thereof, and is arranged to be able to move up and down relative to the first side plate.

[0026] In one embodiment, the locking portion is a protrusion protruding from one end of the first side plate toward the second side plate.

[0027] In one embodiment, the elastic member has an elongated arc-shaped body, one end of the elongated arc-shaped body is provided with a mounting portion, and the back of the other end integrally extends the actuating portion in a direction away from the elongated arc-shaped body and downward.

[0028] The above is an overview of the present application, which may be simplified, summarized, and omitted in detail. Therefore, those skilled in the art should recognize that this section is only illustrative and is not intended to limit the scope of the present application in any way. This summary section is neither intended to determine the key features or essential features of the claimed subject matter, nor is it intended to be used as an auxiliary means to determine the scope of the claimed subject matter.

[0029] The beneficial effects of the present invention include: the container of the present invention can realize convenient assembly operation and rapid unfolding and folding, is easy to operate and suitable for humanized operation, has light unlocking and locking force, good operating feel, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features of the present application will be more fully understood through the following description and the attached claims in conjunction with the accompanying drawings. It is understood that these drawings only depict several embodiments of the present application and should not be considered as limiting the scope of the present application. By using the accompanying drawings, the present application will be more clearly and detailed.

[0031] Figure 1 A perspective view of a folding box according to an embodiment of the present invention is shown, wherein the folding box is in an unfolded state;

[0032] Figure 2 A perspective view of a folding box is shown, wherein the folding box is in a folded state;

[0033] Figure 3 Another perspective view of the folding box is shown, wherein a portion at the locking position of the adjacent side panels is cut away to show the connection between the elastic member and the side panels;

[0034] Figure 3A Show Figure 3 An enlarged view of the middle section position A;

[0035] Figure 4 is a three-dimensional diagram of an elastic member according to an embodiment of the present application;

[0036] Figure 5 Another perspective view of the folding box is shown, wherein another portion at the locking position of the adjacent side panels is cut away to show the connection of the elastic member to the side panels;

[0037] Figure 6 Show Figure 5 An enlarged view of the middle section position B;

[0038] Figure 7 Another perspective view of the folding box is shown, wherein another portion at the locking position of the adjacent side panels is cut away to show the locking structure of the adjacent side panels, and the side panels are in a locked state;

[0039] Figure 8 Show Figure 7 An enlarged view of the middle section position C;

[0040] Fig. 9 Another perspective view of the folding box is shown, wherein a further portion at the locking position of the adjacent side panels is cut away to show the locking structure of the adjacent side panels, and the side panels are in an unlocked state;

[0041] Fig.10 Show Fig. 9 An enlarged view of the middle section position D;

[0042] Fig.11 An exploded perspective view showing a long side panel;

[0043] Fig.12 A perspective view showing a folding box according to an embodiment of the present invention with a first side panel folded;

[0044] Fig.13 Show Fig.12 An enlarged view of the middle elastic member installation position E;

[0045] Fig.14 A perspective view showing a first side panel of a folding box according to an embodiment of the present invention;

[0046] Fig.15 is an exploded perspective view of an operating handle and a reset structure thereof according to an embodiment of the present invention;

[0047] Fig.16 is a perspective view of a first side panel according to an embodiment of the present invention, with an operating handle mounted thereon and partially cut away;

[0048] Fig.17 yes Fig.16 An enlarged view of part F;

[0049] Fig.18 is a perspective view of a first side panel according to an embodiment of the present invention, with an operating handle mounted thereon and partially cut away;

[0050] Fig.19 yes Fig.18 An enlarged view of part G;

[0051] Fig. 20 is a perspective view of the operating mechanism, with parts cut away;

[0052] Fig.21 yes Fig. 20 An enlarged view of part H;

[0053] Fig. 22 A perspective view showing a folding box according to a second embodiment of the present invention, with parts cut away;

[0054] Fig.23 yes Fig. 22 An enlarged view of section I, wherein the side panels are in the unlocked state;

[0055] Fig.24 yes Fig. 22 An enlarged view of the changed state of the middle part I, in which the side plate is in a locked state;

[0056] Fig.25 yes Fig. 22 A perspective view of the elastic member in the illustrated embodiment.

[0057] Fig.26 A perspective view showing a folding box according to a third embodiment of the present invention, with parts cut away;

[0058] Fig. 27 yes Fig.26 An enlarged view of the middle J section, with the side panels in the locked state;

[0059] Fig.28 yes Fig.26 An enlarged view of the changing state of the middle J part, in which the side plate is in the unlocked state;

[0060] Fig.29 yes Fig.26 Another perspective view of the folding box shown, with one of the short side panels in a folded state;

[0061] Fig.30 yes Fig.29 Enlarged view of the middle K section;

[0062] Fig.31 yes Fig.26 A perspective view of the operating handle in the illustrated embodiment;

[0063] Fig.32 yes Fig.26 a perspective view of the elastic member in the illustrated embodiment; and

[0064] Fig.33 yes Fig.26 A perspective view of the elastic member in the illustrated embodiment from another perspective. DETAILED DESCRIPTION

[0065] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0066] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0067] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0068] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0069] In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, one skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details.

[0070] Figure 1 and 2is a stereoscopic view of a folding box 100 of the present invention, wherein the side panels are in an upright state and a folded state, respectively. As shown in the figure, the folding box 100 includes a base 1, a pair of opposite first side panels 2, 2 and a pair of opposite second side panels 3, 3. The first side panels 2, 2 and the second side panels 3, 3 are adjacent to each other and define an internal volume together with the base 1 in an upright state. Preferably, the first side panel 2 and the second side panel 3 are made of a high-strength material such as high-strength plastic. Typically, the length of the first side panel 2 is shorter than the length of the second side panel 3 to form a folding box in a roughly rectangular shape. Therefore, the first side panel 2 is also called a short side panel, and the second side panel 3 is also called a long side panel. However, it should be understood that the first side panel 2 and the second side panel 3 may also be the same length to form a square folding box.

[0071] The bottom ends of the first side panel 2 and the second side panel 3 are connected to four edges of the upper surface of the base 1 through a hinge structure 5. One pair of opposite edges among the four edges is provided with an upward protruding wall 4, the height of which is substantially equal to the thickness of the side panels provided on the adjacent pair of edges, and the protruding wall 4 of the height defines a space for accommodating the adjacent side panels folded onto the base 1. Thus, the first side panel 2 and the second side panel 3 can be folded successively above the base 1, so that the folding box 100 is in a folded state. In the illustrated embodiment, the lower end of the second side panel 3 is hinged to the protruding wall 4 through the hinge structure 5. The adjacent first side panel 2 and the second side panel 3 are releasably locked to each other through a locking structure. The locking structure is formed by the locking portion 22 and the limiting groove 34 described below. When the locking portion 22 is located in the limiting groove 34, the first side panel 2 and the second side panel 3 are locked relative to each other, and when the locking portion 22 is disengaged from the limiting groove 34, the first side panel 2 and the second side panel 3 are unlocked.

[0072] The first side panel 2 is provided with an operating mechanism 21 and a locking portion 22. The locking portion 22 may be a protrusion formed on the edge of the first side panel 2, or may be formed by the inner edge of the first side panel 2 as shown in the illustrated embodiment. The inner edge includes a protrusion formed by the portion of the inner layer 23 of the first side panel 2 extending beyond the outer layer 24 and protruding toward the second side panel 3. The operating mechanism 21 has an operating handle 211 and a spring 212. The operating handle 211 is operable to move between a first position and a second position relative to the first side panel. In this embodiment, the operating handle 211 moves up and down along the first side panel to drive the locking structure to achieve unlocking and locking. The operating handle 211 can be reset under the action of the spring 212, which will be described in further detail below.

[0073] like Figure 3-10As shown, the second side plate 3 is provided with an elastic member 31. The first end of the elastic member 31 is detachably mounted on the inner side of one end of the second side plate 3, and the second end of the elastic member 31 is a free end and is provided with a first limiting portion 32 and a second limiting portion 33 in sequence, and a limiting groove 34 is formed between the first limiting portion 32 and the second limiting portion 33. When the first side plate 2 and the second side plate 3 of the folding box 100 are in an upright state, the locking portion 22 of the first side plate 2 is located in the limiting groove 34, thereby locking the first side plate 2 and the second side plate 3 relative to each other. The operating handle 211 can be operably moved between a first position at the bottom and a second position at the top relative to the first side plate 2. The movement of the operating member 211 toward the second position can drive the elastic member 31 to elastically deform upward, that is, the limiting groove moves upward, so that the locking portion 22 is disengaged from the limiting groove 34, thereby releasing the locking between the first side plate 2 and the second side plate 3. After the operating handle 211 returns to the first position, the elastic member is reset, that is, restored to its original state.

[0074] Specifically, if Figure 4 As shown, the elastic member 31 has a long strip body 301. One end of the long strip body 301, that is, the first end of the elastic member 31, is provided with a mounting portion 302. The other end of the long strip body 302, that is, the second end of the elastic member, is a free end and is provided with a first limiting protrusion 32 and a second limiting protrusion 33 that protrude from the long strip body toward the inner side of the folding box and are spaced apart from each other. A limiting groove 34 is provided between the first limiting protrusion 32 and the second limiting protrusion 33. The cross section of the mounting portion 302 is T-shaped. Accordingly, a slot with a T-shaped cross section is provided on the second side plate, which cooperates with the mounting portion 302 to detachably mount the elastic member 31 on the second side plate.

[0075] like Figure 6 As shown, a third limiting protrusion 303 is also protruded from the surface of the mounting portion of the elastic member 31. In this embodiment, the third limiting protrusion 303 protrudes from the rear side surface of the mounting portion. It should be understood that the third limiting protrusion can also protrude from other side surfaces of the mounting portion, such as from the front side surface. Correspondingly, a second limiting groove 308 is provided in the mounting hole 307 of the second side plate, and the third limiting protrusion 303 is engaged with the second limiting groove, so that the elastic member 31 is fixed to the second side plate, which will be further described below.

[0076] The lower surface of the first limiting protrusion 32 is provided with a guiding inclined surface 304. The guiding inclined surface 304 is used to guide the locking portion 22 during the locking process of the folding box, so that the locking portion 22 can smoothly enter the limiting groove 34. The second limiting protrusion 33 is also used as an actuating portion, and its lower surface is a driving surface 305. The driving surface 305 cooperates with the end of the operating handle 211 to drive the elastic member 31 to move to achieve unlocking. The driving surface 305 is a plane. Correspondingly, the top surface of the operating handle 211 that cooperates with the driving surface 305 is also a plane. It should be understood that the matching structure between the second limiting protrusion 33 and the operating handle 211 can also adopt other structures, as long as it can make the upward movement of the operating handle 211 drive the second limiting protrusion 33 to move upward, and then make the limiting groove move upward.

[0077] A recess 306 is formed on the inner surface of the second side panel 3 at a position corresponding to the elastic member 31. The top surface of the recess 306 is separated from the top surface of the elastic member 31 by a predetermined distance. The predetermined distance is set so that the elastic member 31 has space to deform upward. As a result, the elastic member 31 can move in the recess 306, so that the locking portion 22 on the second side panel can enter or disengage from the limiting groove 34. A mounting hole 307 is formed on one side of the recess 306. The first end of the elastic member 31 is detachably mounted to the mounting hole 307. The cross-section of the mounting hole 307 is T-shaped. A second limiting groove is also provided in the mounting hole 307, which cooperates with the third limiting protrusion on the elastic member to fix the elastic member on the second side panel. After installation, the main body of the elastic member 31 is located in the recess. In this way, accidental damage is avoided and the use of the box is not affected. The ends of the first limiting portion and the second limiting portion extend beyond the inner surface of the second side panel, so that they can cooperate with the operating handle and the locking portion on the first side panel. As shown in FIG. Figure 14-15 As shown, the operating handle 211 has an operating handle 2111 and a handle driving portion 2112 located at both ends of the operating handle 2111. Specifically, in the illustrated embodiment, the operating handle 211 is flat in shape, and the handle driving portion 2112 is the top surface of the two ends of the operating handle 2111, which is preferably a plane. The operating handle 211 is arranged to be able to move up and down relative to the first side plate 2. When the operating handle 211 moves upward, its top surface (handle driving portion) presses against the bottom surface of the second limiting portion 33 of the elastic member. As a result, the elastic member is driven to deform upward, so that the limiting groove 34 on the elastic member is disengaged from the locking portion, thereby achieving unlocking. In this embodiment, the width of the operating handle 211 is approximately equal to the width of the first side plate 2. However, it should be understood that the operating handle 211 may also be in other shapes without departing from the scope of the present invention.

[0078] The connection between the operating handle 211 and the first side plate 2 is shown in Figure 16-19In the illustrated embodiment, the first side panel 2 is composed of an inner layer 23 and an outer layer 24, and a reinforcing rib disposed between the inner layer and the outer layer and fixedly connecting the two. The operating handle 211 is installed between the inner layer 23 and the outer layer 24. A window is provided on the outer layer 24, so that the operator can easily reach the operating handle 211. In the illustrated embodiment, the outer layer 24 has a window from the operating handle 2111 corresponding to the operating handle 211 to the bottom of the first side panel 2, but it should be understood that the size of the window can be changed as needed without departing from the scope of the present invention.

[0079] The side of the operating handle 211 facing the first side plate 2 is as follows: Fig.15 As shown. A slot 2114 is provided on the side of the operating handle 211 facing the first side plate 2. In the embodiment shown, two slots 2114 are provided. Figure 16-17 As shown, a limit strip 25 is provided on the outer side of the inner layer 23 of the first side plate 2. The limit strip 25 is shorter than the length of the slot 2114 and can be inserted into the slot 2114 so that it can slide up and down relative to the slot 2114, thereby realizing the up and down movement of the operating handle 211 relative to the first side plate 2. Fig.16 In FIG. 2 , the operating handle 211 is partially cut away to show the matching relationship between the slot 2114 and the limiting strip 25. Fig.17 2 shows an enlarged view of the cutaway portion. Opposite slot walls are provided on both sides of the slot 2114, one of which is provided with a protruding strip 2115 at an edge close to the inner layer 23, and the limiting strip 25 is provided with a protruding edge 251 at an edge away from the inner layer 23 of the first side plate 2, and the protruding edge extends toward the slot wall provided with the protruding strip 2115. Therefore, when the limiting strip 25 is inserted into the slot 2114, the protruding strip 2115 and the protruding edge 251 are engaged with each other, thereby preventing the operating handle 211 from being disengaged from the first side plate 2.

[0080] In addition, the operating mechanism 21 further includes a handle reset member, which is associated with the operating handle 211 and biases the operating handle 211 toward the first position. In the embodiment shown in the drawings, the handle reset member is a spring 212. Fig.15 . See Figure 20-21 , the spring piece 212 is detachably mounted on the top of the operating handle 2111. In the illustrated embodiment, the spring piece 212 is roughly V-shaped. The cross section at one side of the V or the end of one side is "T"-shaped. Correspondingly, a "T"-shaped slot 2116 is provided at the top of the operating handle 2111 of the operating handle 211. The inner wall of the slot 2115 is also provided with a stop protrusion 2117. Correspondingly, a corresponding portion of the spring piece 212 is also provided with a limit protrusion 2121. The stop protrusion 2117 cooperates with the limit protrusion 2121, so that the spring piece 212 is fixedly connected to the operating handle 211.

[0081] The spring piece 212 can be inserted into the above-mentioned "T"-shaped slot 2116 in the horizontal direction, thereby realizing the connection between the operating handle 211 and the spring piece 212. The other end of the spring piece 212 presses against the baffle inside the first side panel. When the operating handle 211 is located at the first position at the bottom, the spring piece 211 is in an initial state. When the operating handle 211 moves upward, the spring piece 212 moves upward with the operating handle 211 and deforms elastically. When the operating handle 211 moves to the second position, the spring piece 212 is deformed to the maximum and its elastic force is also the maximum. This elastic force can reset the operating handle 211 to the first position after the operator releases the operating handle 2111.

[0082] However, it should be understood that the handle reset member is not limited to the spring sheet 212, and a spring may also be provided. For example, one end of the spring is fixed relative to the first side plate 2, and the other end is fixedly connected to the operating handle 211, so that when the operating handle 211 moves upward, a downward pulling force is applied to the operating handle 211.

[0083] In addition, in order to achieve a firm connection between the first side panel 2 and the second side panel 3 in a locked state, a bite structure 40 is also provided on the edge of the side panel. As shown in the figure, the bite structure can adopt any suitable structure known or to be developed, which will not be described in detail here.

[0084] The operation of the folding box 100 is as follows. When the folding box 100 needs to be unfolded from the folded state to the use state, the second side panel 3 is first erected, and then the first side panel 2 is erected, so that the locking portion 22 is engaged in the limiting groove 34. When the folding box 100 needs to be folded and stored from the use state, the operating handle 211 is lifted, and as the operating handle 211 moves, the handle driving portion on the operating handle pushes the elastic member upward, thereby deforming the elastic member 31 upward, causing the locking portion 22 to disengage from the limiting groove 34, and releasing the lock between the first side panel 2 and the second side panel 3.

[0085] Figure 22-25 FIG. 6 shows another embodiment of a folding box 600 of the present invention. The folding box 600 of this embodiment is different from the folding box 100 of the above embodiment in that the elastic member 601 is provided, and the rest is basically the same and will not be described in detail here. Figure 22-25 As shown, the elastic member 601 of the folding box 600 is different from the elastic member 31 of the folding box 100 in that the elastic member 601 eliminates the second limiting protrusion 33 of the elastic member 31. Specifically, the elastic member 601 has a long strip body 602. One end of the long strip body is provided with a mounting portion 603, and the other end is provided with a first limiting protrusion 604 and an actuating portion 605 in sequence. The first limiting protrusion 604 protrudes from the long strip body toward the inner side of the folding box. The lower surface of the first limiting protrusion 604 is provided with a guiding inclined surface. Therefore, when locked, the locking portion 22 on the first side plate 2 is located between the first limiting protrusion 604 and the first side plate.

[0086] The operation of the folding box 600 is as follows. When the folding box 600 needs to be unfolded from the folded state to the use state, the second side panel 3 is first erected, and then the first side panel 2 is erected, so that the locking portion 22 is engaged between the first limiting protrusion 604 and the first side panel 2. When the folding box 600 needs to be folded and stored from the use state, the operating handle 211 is lifted, and as the operating handle 211 moves, the handle driving portion on the operating handle drives the actuating portion 605, specifically, drives the lower surface of the actuating portion 605, pushes the elastic member 601 upward, thereby deforming the elastic member 601 upward, causing the locking portion 22 to disengage from the first limiting protrusion 604, and releasing the lock between the first side panel 2 and the second side panel 3.

[0087] Figure 26-33 FIG. 7 shows another embodiment of a folding box 700 of the present invention. The folding box 700 of this embodiment is different from the folding box 100 of the above embodiment in that the elastic member 701 and the operating handle 705, as well as the difference in working principle caused by them, are basically the same and will not be described in detail here. Figure 26-33 As shown, the elastic member 701 of this embodiment has a long arc-shaped body 702. The long arc-shaped body allows the end of the elastic member 701 to protrude from the inner surface of the side plate after the elastic member 701 is installed on the side plate. Therefore, the long arc-shaped body 702 itself can also be used as a first limiting portion and play a guiding role in the process of the side plate being upright and locked.

[0088] One end of the long arc-shaped body 702 is provided with a mounting portion 703, and the other end is used as a first limiting portion 704. Further, the back 706 of the other end of the long arc-shaped body 702 integrally extends an actuating portion 707 in a direction away from the long arc-shaped body and downward. When locked, the locking portion 22 on the first side plate 2 is located between the first limiting portion 704 and the first side plate. Further, the elastic member 701 is also configured so that after installation, the bottom surface 309 of the recess 306 of the second side plate 3 is spaced apart from the back surface 708 of the elastic member by a predetermined distance, thereby providing space for the elastic member 701 to deform toward the outside of the box.

[0089] like Fig.31 As shown, the structure of the operating handle 705 is basically the same as the structure of the operating handle 211 of the folding box 100 of the above embodiment, and the only difference is that a guide structure 7051 is provided at the end of the operating handle, and the rest of the parts are the same and will not be described in detail here. The guide structure 7051 is a guide slope. During the unlocking process, the guide structure cooperates with the actuating portion 707 on the elastic member to drive the elastic member to deform toward the outside of the box body, so that the locking portion is separated from the first limiting portion 704 on the elastic member to achieve unlocking.

[0090] The operation of the folding box 700 is as follows. When the folding box 700 needs to be unfolded from the folded state to the use state, the second side panel 3 is first erected, and then the first side panel 2 is erected, so that the locking portion 22 is engaged between the first limiting portion 704 and the first side panel 2. During the erection of the first side panel 2, the locking portion 211 thereon, under the guidance of the portion of the elastic member 701 protruding from the inner wall of the box body, passes over the first limiting portion and enters between the first limiting portion and the first side panel. When the folding box 700 needs to be folded and stored from the use state, the operating handle 211 is lifted. With the movement of the operating handle 211, the handle driving portion on the operating handle 211 drives the actuating portion 705. Specifically, the guiding inclined surface 7051 of the handle drives the lower surface of the actuating portion 705 to push the elastic member 701 toward the outside of the box body, thereby deforming the elastic member 701 outward, causing the locking portion 22 to disengage from the first limiting portion 704, and releasing the lock between the first side panel 2 and the second side panel 3.

[0091] The folding box 100 of the present invention is easy to lock, and the unlocking and locking force is light, which will not damage the side panels, and the service life of the folding box 100 is correspondingly extended. In addition, if any component of the entire locking mechanism is damaged, such as the handle, the spring and / or the elastic member, it can also be easily replaced.

[0092] The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A folding box, comprising a base, a pair of opposite first side panels and an adjacent pair of opposite second side panels, wherein the first side panels and the second side panels are both hinged to the base and can be folded relative to the base, characterized in that: The folding box further comprises an elastic member, a first end of which is detachably mounted on the inner side of one end of the second side plate, and a second end of which is a free end and is provided with a first limiting portion and an actuating portion in sequence; The first side plate is provided with an operating mechanism and a locking portion, wherein the operating mechanism has an operating handle; The operating handle is arranged to be operable to move between a first position and a second position relative to the first side plate, and the movement of the operating handle toward the second position applies a force to the actuating portion, so that the elastic member is elastically deformed, so that the locking portion is disengaged from the first limiting portion; A concave portion is formed on the inner surface of the second side plate at a position corresponding to the elastic member, and a top surface of the concave portion is spaced a predetermined distance from a top surface of the elastic member; or a bottom surface of the concave portion is spaced a predetermined distance from a back surface of the elastic member; The main body of the elastic member is located in the recess, and the operating handle is further arranged to apply an upward force to the actuating portion when moving toward the second position, so that the elastic member is elastically deformed upward.

2. The folding box according to claim 1, characterized in that: The second side plate is provided with a mounting hole, and the first end of the elastic member is detachably mounted on the mounting hole.

3. The folding box according to claim 1, characterized in that: The end of the first limiting portion extends beyond the inner surface of the second side plate.

4. The folding box according to claim 1, characterized in that: The second end of the elastic member is further provided with a second limiting portion, a limiting groove is formed between the first limiting portion and the second limiting portion, and the actuating portion is arranged on the second limiting portion.

5. The folding box according to claim 4, characterized in that: A guiding inclined surface is disposed on the lower surface of the first limiting portion of the elastic member, and a driving surface is disposed on the lower surface of the second limiting portion.

6. The folding box according to claim 2, characterized in that: The elastic member has a long strip body, one end of which is provided with a mounting portion, and the other end is provided with a first limiting protrusion and a second limiting protrusion which protrude from the long strip body toward the inner side of the folding box and are spaced apart from each other, wherein the lower surface of the first limiting protrusion is provided with a guiding inclined surface.

7. The folding box according to claim 6, characterized in that: A third limiting protrusion is protruded from the surface of the mounting portion, a second limiting groove is arranged in the mounting hole, and the third limiting protrusion is engaged with the second limiting groove.

8. The folding box according to claim 1, characterized in that: The operating mechanism is further provided with a handle restoring member, which is associated with the operating handle and biases the operating handle toward the first position.

9. The folding box according to claim 8, characterized in that: The operating handle comprises an operating handle and handle driving parts at both ends thereof, and is arranged to be able to move up and down relative to the first side plate; and the handle reset member is detachably mounted on the top end of the operating handle.

10. The folding box according to claim 1, characterized in that: The locking portion is a protrusion protruding from one end portion of the first side plate toward the second side plate.

11. The folding box according to claim 1, characterized in that: The elastic member has a long arc-shaped body, one end of the long arc-shaped body is provided with a mounting portion, and the back of the other end integrally extends the actuating portion in a direction away from the long arc-shaped body and downward.

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