CN110654675B

CN110654675B - Folding Box

Info

Publication number: CN110654675B
Application number: CN201910824626.7A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shanghai Box Intelligent Technology Co Ltd
Current assignee: Shanghai Box Intelligent Technology Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2025-01-10
Anticipated expiration: 2039-09-02
Also published as: CN110654675A; WO2021042950A1

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

Folding box

Technical Field

The present invention relates to a logistics receptacle, and more particularly to a folding box.

Background

When the existing folding box is used, the side plates are required to be unfolded and erected relatively, the two adjacent side plates are interlocked, so that a relatively closed space is formed to accommodate goods, and after the goods are emptied, the box body is required to be folded and recycled for saving the cost to the greatest extent, so that the cost of empty box transportation is reduced.

When the side panels are erected, a locking mechanism is required to lock adjacent side panels to one another to achieve relative securement. Most of locking structures used in the existing folding boxes are complex in operation steps and structure.

In addition, the existing folding box is in a to-be-assembled state after being unfolded vertically when in use, and when in recovery, a pair of side plates are required to be knocked, so that the side plates are unlocked forcibly. The operation is laborious, although the mechanical operation unlocking is convenient, the manual operation is not facilitated, particularly when the side plate is knocked to unlock, the risk of damaging the side plate is relatively high, the side plate becomes a consumable product, and the maintenance cost of a later product is high.

Accordingly, there is a need in the art for a locking structure that is simple and reliable to operate, and a durable folding box having the same.

Disclosure of Invention

Based on the existing defects, the invention provides the locking device for the container, thereby realizing convenient operation, reducing finished parts and vulnerable parts, improving the quality of the product and prolonging the service life of the product.

In particular, the present invention provides a folding carton having a base, a pair of opposed first side panels and an adjacent pair of opposed second side panels, each of the first side panels and the second side panels being hinged to the base and capable of folding relative to the base,

The folding box further comprises an elastic piece, a first end of the elastic piece is detachably arranged on the inner side of one end of the second side plate, and a second end of the elastic piece is a free end and is sequentially provided with a first limiting part and an actuating part;

the first side plate is provided with an operating mechanism and a locking part, the operating mechanism is provided with an operating handle, wherein

The operating handle is arranged to be operable to move relative to the first side plate between a first position and a second position, movement of the operating handle towards the second position exerting a force on the actuation portion to resiliently deform the resilient member to disengage the locking portion from the first limit portion.

In an embodiment, the resilient member is arranged to return when the operating handle is moved from the second position to the first position.

In an embodiment, the second side plate is provided with a mounting hole, and the first end of the elastic member is detachably mounted in the mounting hole.

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.

In one embodiment, the second side plate has a recess formed on an inner side surface thereof at a position corresponding to the elastic member.

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 interval is set such that the elastic member has a space to deform upward. In one embodiment, the mounting hole is disposed at one side of the recess.

In an embodiment, the ends of the first and second limiting portions extend beyond the inner side surface of the second side plate.

In an embodiment, the operating handle is further arranged to apply an upward force to the actuation portion upon movement towards the second position, such that the resilient member is elastically deformed upward.

In one embodiment, the third limit protrusion protrudes from a rear side surface of the mounting portion.

In an embodiment, the second end of the elastic element is further provided with a second limiting portion, and a limiting groove is formed between the first limiting portion and the second limiting portion, wherein the actuating portion is disposed on the second limiting portion.

In an embodiment, a guiding inclined plane is disposed on the lower surface of the first limiting portion of the elastic member, and the lower surface of the second limiting portion is a driving surface.

In an embodiment, the elastic piece is provided with a strip-shaped body, one end of the strip-shaped body is provided with a mounting part, the other end of the strip-shaped body is sequentially provided with a first limiting protrusion and a second limiting protrusion protruding from the strip-shaped body towards the inner side of the folding box and spaced apart from each other, and the lower surface of the first limiting protrusion is provided with a guiding inclined plane.

In an embodiment, a third limiting protrusion protrudes from the surface of the mounting portion, a second limiting groove is formed in the mounting hole, and the third limiting protrusion is clamped with the second limiting groove.

In one embodiment, the operating mechanism is further provided with a handle return member associated with the operating handle and biasing the operating handle towards the first position.

In one embodiment, the handle reset piece is detachably mounted at the top end of the operating handle.

In one embodiment, the operating handle has an operating grip and handle driving parts at both ends thereof, and is arranged to be movable up and down with respect to the first side plate.

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

In an embodiment, the elastic member has an elongated arc body, one end of the elongated arc body is provided with a mounting portion, and the back of the other end of the elongated arc body extends downward from the actuating portion in an integral manner in a direction away from the elongated arc body.

The foregoing is a summary of the application and there may be a simplification, generalization, and omission of details, so it will be recognized by those skilled in the art that this section is merely illustrative and is not intended to limit the scope of the application in any way. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The container disclosed by the invention has the beneficial effects that the container can realize convenient and fast assembly operation and fast unfolding and folding, is convenient to operate, is suitable for manual humanized operation, is light in unlocking and locking force, has good operation hand feeling and is easy to maintain.

Drawings

The above and other features of the present disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. It is appreciated that these drawings depict only several embodiments of the present disclosure and are therefore not to be considered limiting of its scope. The present disclosure will be described more specifically and in detail by using the accompanying drawings.

FIG. 1 illustrates a perspective view of a folding box according to an embodiment of the present invention, wherein the folding box is in an unfolded state;

FIG. 2 shows a perspective view of the folding box, wherein the folding box is in a folded state;

FIG. 3 shows another perspective view of the folding box with a portion cut away at the locked position of the adjacent side panels to show the connection of the elastic members to the side panels;

FIG. 3A shows an enlarged view of the cut-away position A of FIG. 3;

FIG. 4 is a perspective view of an elastic member according to an embodiment of the present application;

FIG. 5 shows another perspective view of the folding box with another partial cutaway at the locked position of the adjacent side panels to illustrate the connection of the elastic members to the side panels;

FIG. 6 shows an enlarged view of the cut-away position B of FIG. 5;

FIG. 7 shows another perspective view of the folding box with a further partial cutaway at the locked position of the adjacent side panels to illustrate the locking structure of the adjacent side panels with the side panels in a locked condition;

Fig. 8 shows an enlarged view of the cut-away position C in fig. 7;

FIG. 9 illustrates another perspective view of the folding box with a further portion cut away at the locked position of the adjacent side panels to illustrate the locking structure of the adjacent side panels and the side panels in an unlocked state;

FIG. 10 shows an enlarged view of the cut-away position D of FIG. 9;

fig. 11 shows an exploded perspective view of the long side plate;

FIG. 12 is a perspective view of the folding box with a first side panel folded in accordance with one embodiment of the present invention;

FIG. 13 shows an enlarged view of the spring mounting position E of FIG. 12;

FIG. 14 shows a perspective view of a first side panel of the folding box in accordance with an embodiment of the invention;

FIG. 15 is an exploded perspective view of an operating handle and its reset structure according to one embodiment of the present invention;

FIG. 16 is a perspective view of a first side panel with an operating handle mounted thereto and partially cut away in accordance with an embodiment of the invention;

Fig. 17 is an enlarged view of part F of fig. 16;

FIG. 18 is a perspective view of a first side panel with an operating handle mounted thereto and partially cut away in accordance with an embodiment of the invention;

fig. 19 is an enlarged view of a portion G of fig. 18;

FIG. 20 is a perspective view of the operating mechanism with portions broken away;

Fig. 21 is an enlarged view of the H portion of fig. 20;

fig. 22 shows a perspective view of a folding box according to a second embodiment of the invention, partly in section;

FIG. 23 is an enlarged view of portion I of FIG. 22 with the side panels in an unlocked state;

FIG. 24 is an enlarged view of the modified state of the portion I of FIG. 22 with the side plates in the locked state;

fig. 25 is a perspective view of the resilient member in the embodiment shown in fig. 22.

Fig. 26 shows a perspective view of a folding box according to a third embodiment of the invention, partly in section;

FIG. 27 is an enlarged view of portion J of FIG. 26 with the side plates in a locked condition;

FIG. 28 is an enlarged view of the modified condition of portion J of FIG. 26 with the side panels in an unlocked condition;

FIG. 29 is another perspective view of the folding box shown in FIG. 26 with one of the short side panels in a folded condition;

fig. 30 is an enlarged view of the K portion in fig. 29;

FIG. 31 is a perspective view of the operating handle in the embodiment shown in FIG. 26;

FIG. 32 is a perspective view of the resilient member of the embodiment of FIG. 26, and

Fig. 33 is a perspective view of the resilient member of the embodiment of fig. 26 from another perspective.

Detailed Description

The following detailed description of various embodiments of the present invention will be provided in connection with the accompanying drawings to provide a clearer understanding of the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.

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

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.

In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details.

Fig. 1 and 2 are perspective views of a folding box 100 of the present invention in which the side panels are in an erect condition and a folded condition, respectively. As shown, the folding box 100 includes a base 1, a pair of opposing first side panels 2, 2 and a pair of opposing second side panels 3, 3. Wherein the first side panels 2, 2 and the second side panels 3, 3 are adjacent to each other and define an interior volume with the base 1 in an erect condition. Preferably, the first side plate 2 and the second side plate 3 are made of a high-strength material such as a high-strength plastic. In general, the length of the first side plate 2 is shorter than the length of the second side plate 3 to form a folding box of a substantially rectangular parallelepiped shape. Therefore, the first side plate 2 is also called a short side plate, and the second side plate 3 is also called a long side plate. It will be appreciated that the first side panel 2 and the second side panel 3 may also be of the same length to form a square folding box.

The bottom ends of the first side plate 2 and the second side plate 3 are connected to four edges of the upper surface of the base 1 by a hinge structure 5. One of the four edges, the opposite edge of which is provided with an upward projecting wall 4, the projecting wall 4 having a height substantially equal to the thickness of the side panels provided on the adjacent pair of edges, the projecting wall 4 of a height defining 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 sequentially folded over the base 1, with the folding box 100 in a folded state. In the embodiment shown, the lower end of the second side plate 3 is hinged to the protruding wall 4 by means of a hinge structure 5. Adjacent first side plate 2 and second side plate 3 are releasably locked to each other by a locking structure. The locking structure is formed by the below-described locking portion 22 and the stopper groove 34. When the locking portion 22 is located in the limit groove 34, the first side plate 2 and the second side plate 3 are locked with respect to each other, and when the locking portion 22 is disengaged from the limit groove 34, the first side plate 2 and the second side plate 3 are unlocked.

The first side plate 2 is provided with an operating mechanism 21 and a locking portion 22. Wherein the locking portion 22 may be a protrusion formed on an edge of the first side plate 2 or may be formed by an inner side edge of the first side plate 2 as shown in the illustrated embodiment. The inner edge comprises a flange formed by the portion of the inner layer 23 of the first side panel 2 extending beyond the outer layer 24 and protruding towards the second side panel 3. The operating mechanism 21 has an operating handle 211 and a spring 212, the operating handle 211 being operable to move relative to the first side plate between a first position and a second position, in this embodiment up and down along the first side plate, to actuate the locking mechanism to effect unlocking and locking. The handle 211 is resettable by the spring 212, as will be described in further detail below.

As shown in fig. 3-10, 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, the second end of the elastic member 31 is a free end and is sequentially provided with a first limiting portion 32 and a second limiting portion 33, 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 the erected state, the locking portion 22 of the first side plate 2 is positioned in the restricting groove 34, thereby locking the first side plate 2 and the second side plate 3 with respect to each other. The operating handle 211 is operable to move relative to the first side plate 2 between a first position below and a second position above. Wherein movement of the operating member 211 toward the second position can urge the elastic member 31 to elastically deform upward, i.e., the restricting groove moves upward, thereby disengaging the locking portion 22 from the restricting groove 34, thereby releasing the lock between the first side plate 2 and the second side plate 3. After the operation handle 211 is returned to the first position, the elastic member is restored, i.e., restored.

Specifically, as shown in fig. 4, the elastic member 31 has an elongated body 301. One end of the elongated body 301, i.e. the first end of the elastic member 31, is provided with a mounting portion 302. The other end of the elongated body 302, i.e. the second end of the elastic member, is a free end and is provided with a first limit protrusion 32 and a second limit protrusion 33 protruding from the elongated body toward the inside of the folding box and spaced apart from each other in sequence. A limiting groove 34 is arranged between the first limiting protrusion 32 and the second limiting protrusion 33. The cross section of the mounting portion 302 is T-shaped. Correspondingly, the second side plate is provided with a clamping groove with a T-shaped cross section, which is matched with the mounting part 302 to detachably mount the elastic piece 31 on the second side plate.

As shown in fig. 6, the surface of the mounting portion of the elastic member 31 further protrudes with a third limit protrusion 303. In this embodiment, the third stopper protrusion 303 protrudes from the rear side surface of the mounting portion. It will be appreciated that the third limit projection may also project from other side surfaces of the mounting portion, for example 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 as to fix the elastic member 31 on the second side plate, which will be further described below.

The lower surface of the first limiting projection 32 is provided with a guide slope 304. The guiding inclined surface 304 is used for guiding the locking part 22 during the locking process of the folding box, so that the locking part 22 smoothly enters the limit groove 34. The second limit projection 33 simultaneously serves as an actuating portion, the lower surface of which is the driving surface 305. The driving surface 305 cooperates with the end of the operating handle 211 to drive the movement of the elastic member 31 to achieve unlocking. The driving surface 305 is a plane. Correspondingly, the top surface of the operating handle 211, which cooperates with the drive surface 305, is also planar. It should be understood that the engaging structure between the second limiting protrusion 33 and the operating handle 211 may also be other structures, so long as it enables the upward movement of the operating handle 211 to drive the second limiting protrusion 33 to move upward, thereby enabling the limiting groove to move upward.

The second side plate 3 is formed with a concave portion 306 on an inner side surface thereof at a position corresponding to the elastic member 31. The top surface of the recess 306 is spaced apart from the top surface of the elastic member 31 by a predetermined interval. The predetermined interval is set such that the elastic member 31 has a space to deform upward. Thus, the elastic member 31 can move in the recess 306, so that the locking portion 22 on the second side plate can enter or leave the limit 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 mounting hole 307 has a T-shaped cross section. The mounting hole 307 is further provided with a second limiting groove, which is matched with a third limiting protrusion on the elastic piece to fixedly mount the elastic piece on the second side plate. When installed, the main body portion of the elastic member 31 is located in the recess. Thereby, accidental damage and influence of the box body are avoided. The distal ends of the first and second stopper portions extend beyond the inner side surface of the second side plate, whereby they can be engaged with the operating handle and the locking portion on the first side plate. As shown in fig. 14 to 15, the operation handle 211 has an operation handle 2111 and handle driving portions 2112 at both ends of the operation handle 2111. Specifically, in the illustrated embodiment, the operating handle 211 has a flat shape, and the handle driving portion 2112 is a top surface of both ends of the operating handle 2111, which is preferably a flat surface. The operation handle 211 is arranged to be movable up and down with respect to the first side plate 2. When the operation handle 211 moves upward, the top surface (handle driving portion) thereof abuts against the bottom surface of the second stopper portion 33 of the elastic member. Thereby, the elastic piece is driven to deform upwards, so that the limit groove 34 on the elastic piece is separated from the locking part, and unlocking is realized. In this embodiment, the width of the operating handle 211 is substantially equal to the width of the first side plate 2. It should be understood that the operating handle 211 may take other shapes without departing from the scope of the invention.

The coupling of the operating handle 211 to the first side panel 2 is seen in fig. 16-19. In the embodiment shown, the first side panel 2 is formed by an inner layer 23 and an outer layer 24 and reinforcing ribs arranged between and fixedly connecting the inner and outer layers. Wherein the operating handle 211 is mounted between the inner layer 23 and the outer layer 24. A window is provided in the outer layer 24 to facilitate operator access to the operating handle 211. In the illustrated embodiment, the outer layer 24 is windowed from the operating handle 2111 corresponding to the operating handle 211 to the bottom of the first side panel 2, but it is understood that the window size may be varied as desired without departing from the scope of the invention.

The side of the operating handle 211 facing the first side plate 2 is shown in fig. 15. A locking groove 2114 is provided on the side of the operation handle 211 facing the first side plate 2. In the embodiment shown, two clamping grooves 2114 are provided. As shown in fig. 16 to 17, a limit bar 25 is provided on the outer side of the inner layer 23 of the first side plate 2, and the limit bar 25 has a length smaller than that of the clamping groove 2114 and is capable of being clamped into the clamping groove 2114 so as to be capable of sliding up and down with respect to the clamping groove 2114, thereby realizing up and down movement of the operation handle 211 with respect to the first side plate 2. In fig. 16, the operating handle 211 is partially cut away to show the mating relationship between the catching groove 2114 and the stopper 25. An enlarged view of the cut-away portion is shown in fig. 17. Opposite clamping groove walls are provided on both sides of the clamping groove 2114, wherein one clamping groove wall is provided with a protruding strip 2115 near the edge of the inner layer 23, and the limit strip 25 is provided with a protruding edge 251 at the edge of the inner layer 23 remote from the first side plate 2, which protruding edge extends towards the clamping groove wall provided with the protruding strip 2115. Thus, when the stopper bar 25 is inserted into the catching groove 2114, the protruding bar 2115 and the protruding edge 251 are engaged with each other, thereby preventing the operation handle 211 from being disengaged from the first side plate 2.

The operating mechanism 21 further comprises a handle return member associated with the operating handle 211 and biasing the operating handle 211 towards the first position. In the embodiment shown in the drawings, the handle reset member is a spring plate 212, see fig. 15. Referring to fig. 20-21, the spring 212 is detachably mounted to the top end of the operating handle 2111. In the illustrated embodiment, the spring 212 is generally V-shaped. The cross section at one side of the V-shape, or at the end of one side, is "T" shaped. Accordingly, a "T" shaped clip groove 2116 is provided at the top end of the operating handle 2111 of the operating handle 211. The inner wall of the clamping groove 2115 is also provided with a stop protrusion 2117. Correspondingly, a limiting projection 2121 is also arranged at the corresponding part of the elastic sheet 212. The stop protrusion 2117 cooperates with the stop protrusion 2121 to fixedly attach the tab 212 to the operating handle 211.

The elastic sheet can be inserted into the T-shaped clamping groove 2116 along the horizontal direction, so that the operation handle 211 is connected with the elastic sheet 212. The other end of the spring 212 abuts against the baffle inside the first side plate. When the operation handle 211 is located at the first position below, the elastic piece 211 is in an initial state. When the operation handle 211 moves upward, the elastic piece 212 moves upward with the operation handle 211 and elastically deforms. When the operation handle 211 is moved to the second position, the elastic piece 212 is deformed to the maximum, and the elastic force thereof is also the maximum. The elastic force can return the operation grip 211 to the first position after the operator releases the operation grip 2111.

It should be understood that the handle return is not limited to the spring plate 212 and that a spring may be provided. For example, one end of the spring is fixed with respect to the first side plate 2, and the other end is fixedly connected with the operation handle 211 such that when the operation handle 211 moves upward, a downward pulling force is applied to the operation handle 211.

In addition, in order to achieve a firm connection between the first side plate 2 and the second side plate 3 in the locked state, a snap-in structure 40 is provided at the edges of the side plates, which snap-in structure may take any suitable structure, as shown, known or yet to be developed, and will not be described in detail herein.

The operation of the folding box 100 according to the invention is as follows. When the folding box 100 needs to be unfolded from the folded state to the use state, the second side plate 3 is erected first, and then the first side plate 2 is erected, so that the locking part 22 is clamped in the limiting groove 34. When the folding box 100 is required to be folded and stored from the use state, the operation handle 211 is lifted up, and the handle driving part on the operation handle pushes the elastic member upward along with the movement of the operation handle 211, so that the elastic member 31 is deformed upward, the locking part 22 is separated from the limit groove 34, and the locking between the first side plate 2 and the second side plate 3 is released.

Fig. 22-25 illustrate a folding box 600 in accordance with another embodiment of the present invention. The folding box 600 of the present embodiment is different from the folding box 100 of the above-described embodiment in the elastic member 601, and the rest is substantially the same, and will not be described in detail herein. As shown in fig. 22 to 25, the elastic member 601 of the folding box 600 is different from the elastic member 31 of the folding box 100 mainly in that the elastic member 601 eliminates the second limit projection 33 of the elastic member 31. Specifically, the elastic member 601 has an elongated body 602. One end of the strip-shaped body is provided with a mounting part 603, and the other end is provided with a first limiting protrusion 604 and an actuating part 605 in sequence. The first stopper protrusion 604 protrudes from the elongated body toward the inside of the folding box. The lower surface of the first limiting protrusion 604 is provided with a guiding slope. Thus, when locked, the locking portion 22 on the first side plate 2 is located between the first limit projection 604 and the first side plate.

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 plate 3 is erected first, and then the first side plate 2 is erected, so that the locking portion 22 is clamped between the first limit protrusion 604 and the first side plate 2. When it is necessary to fold and store the folding box 600 from the use state, the operation handle 211 is lifted up, and the handle driving portion on the operation handle drives the actuating portion 605, specifically, the lower surface of the actuating portion 605, to push the elastic member 601 upward, thereby deforming the elastic member 601 upward, causing the locking portion 22 to disengage from the first limit projection 604, releasing the lock between the first side plate 2 and the second side plate 3.

Fig. 26-33 illustrate a folding box 700 of another embodiment of the invention. The folding box 700 of the present embodiment is different from the folding box 100 of the above-described embodiment in the elastic member 701 and the operating handle 705, and thus the working principle, and the rest are substantially the same, and will not be described in detail herein. As shown in fig. 26 to 33, the elastic member 701 of the present embodiment has an elongated arc-shaped body 702. The elongate arcuate body is such that after the resilient member 701 is mounted to the side plate, its ends will protrude beyond the inside surface of the side plate. Thus, the elongated arcuate body 702 itself may also serve as a first stop and act as a guide during the upright locking of the side panels.

One end of the elongated arc body 702 is provided with a mounting portion 703, and the other end serves as a first stopper portion 704. Further, the back 706 at the other end of the elongate arc body 702 integrally extends downwardly away from the elongate arc body and out of the actuation portion 707. 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 disposed such that, after installation, the bottom surface 309 of the recess 306 of the second side plate 3 is spaced apart from the rear surface 708 of the elastic member by a predetermined distance, thereby providing a space for the elastic member 701 to deform to the outside of the case.

As shown in fig. 31, the structure of the operating handle 705 is substantially the same as that of the operating handle 211 of the folding box 100 of the above-described embodiment, except that the end of the operating handle is provided with a guide structure 7051, and the rest is the same, which is not described in detail herein. The guide structure 7051 is a guide ramp. In the unlocking process, the guide structure is matched with the actuating part 707 on the elastic piece to drive the elastic piece to deform towards the outer side of the box body, so that the locking part is separated from the first limiting part 704 on the elastic piece, and unlocking is achieved.

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 plate 3 is erected first, and then the first side plate 2 is erected, so that the locking portion 22 is clamped between the first limiting portion 704 and the first side plate 2. In the process of erecting the first side plate 2, the locking part 211 on the first side plate passes over the first limiting part and enters between the first limiting part and the first side plate under the guidance of the part of the elastic part 701 protruding out of the inner wall of the box body. When the folding box 700 needs to be folded and stored from the use state, the operation handle 211 is lifted up, and the handle driving portion on the operation handle 211 drives the actuating portion 705, specifically, the guide slope 7051 of the handle drives the lower surface of the actuating portion 705, pushing the elastic member 701 toward the outside of the box, so that the elastic member 701 is deformed outwardly, causing the locking portion 22 to disengage from the first limiting portion 704, and the locking between the first side plate 2 and the second side plate 3 is released.

The folding box 100 of the invention has simple and convenient locking operation, light unlocking and locking force, no damage to side plates and correspondingly prolonged service life. In addition, if any of the components of the overall locking mechanism are damaged, such as the handle, the spring and/or the elastic member are damaged, it can be easily replaced.

While the preferred embodiments of the present application have been described in detail, it will be appreciated that those skilled in the art, upon reading the above teachings, may make various changes and modifications to the application. Such equivalents are also intended to fall within the scope of the application as defined by the following claims.

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 , wherein 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 , wherein a distal end of the first limiting portion extends beyond an 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 , wherein 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.

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

7. The folding box according to claim 6, characterized in that 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.

8. The folding box according to claim 1, characterized in that the operating mechanism is further provided with a handle restoring member, the handle restoring member 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 has an operating handle and handle driving parts located 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 , wherein the locking portion is a protrusion protruding from one end 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 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.