CN214085306U

CN214085306U - Stack type folding box based on detachable falling stand column and hinge combination

Info

Publication number: CN214085306U
Application number: CN202021392202.2U
Authority: CN
Inventors: 刘积智
Original assignee: Dandong Riqian Logistics Equipment Co ltd
Current assignee: Dandong Riqian Logistics Equipment Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-08-31
Anticipated expiration: 2030-07-15

Abstract

The invention discloses a stacked folding box based on the combination of a detachable laid-down stand column and a hinge, which comprises a chassis and four doors respectively vertically connected to four edges of the chassis, wherein a front door and a rear door are detachably and foldably embedded into fixing grooves arranged at four corners of the chassis through the stand column and an embedded body, and a left door and a right door are connected to the left side and the right side of the chassis through the hinge; a stacking positioning block is further fixed below each fixing groove on the base plate; the bottom surface of each stacking positioning block is provided with a second stacking groove; the top of each fixing groove is also provided with a fixing groove stacking protrusion which is aligned with the second stacking groove in the vertical direction. The front door and the rear door are arranged in a detachable and foldable mode, and are not easy to fall off under common conditions, so that the door is simpler and more effective compared with the connection mode in the prior art; the left door and the right door are hinged and are convenient to fold. In addition closely pile up about the thing flow box can, compare prior art laminating more, stable.

Description

Stack type folding box based on detachable falling stand column and hinge combination

Technical Field

The invention relates to the logistics turnover industry, in particular to a box body device for bearing, loading, unloading and transporting turnover of nonmetal raw material blocks such as rubber, chemical fiber and the like.

Background

The folding box or the logistics box is generally used for bearing, loading, unloading and transporting non-metal material blocks such as rubber, chemical fiber and the like, and generally comprises a chassis, a front door, a rear door, a left door and a right door.

Among the prior art, the front and back door is when installing with the chassis, and every front and back door lower extreme all needs two bolts to paint the binder after, and manual operation screws up the bolt, because of the front and back door is heavier, because of the bolt setting is in the bottom simultaneously, needs two at least people to accomplish, wastes time and energy, and during the maintenance, after more needing the binder that the heating is baked and is solidified, reverse operation, one screws down the bolt, the front and back door can be taken off.

In the prior art, the left door and the right door are connected with the chassis through the fork shafts and the bolts, due to the structural size, the diameters of the fork shafts are very small, even though a high-strength material is adopted, the opening and closing actions are operated all year round, the deformation is serious in the practical situation, the service life is influenced, and the left door panel and the right door panel need to be subjected to pressure forming at the joint of the fork shafts, so that the protective effect of preventing rubber scraps from entering is achieved, but the pressure forming processing process is complex, and labor and time are wasted.

In the prior art, the chassis adopts a Z-shaped profiled strip with the thickness of 3.0mm in four dimensions, although a high-strength material is adopted, the structural size is larger and easy to deform, so that a plurality of vertical pipes are adopted for reinforcement, the design is rigid and complicated, the upper part of the Z shape is still a single-piece non-reinforced support, the large left door and the large right door are blocked by the high-strength plate with the thickness of 3mm, and the slightly obvious force is insufficient.

Among the prior art, this kind of metal box no matter is folding back pile, still carries the thing back pile, because the pile spare is too little, during operating personnel operates, the degree of difficulty is fairly big. Due to the limitation of the inner and outer sizes of the box body, the size of the stacking piece cannot be increased by the stacking piece design, the stacking piece design becomes a big problem in the industry, and the feedback and modification willingness of a user is strong.

In the prior art, the operation is extremely complicated to accomplish the erection of the folding box. Under fold condition, when the artificial upright state of lifting of door by fold condition around with, the front and back door is not vertical location and is standing up, because of its location structure's reason, need lean out certain angle, treat to open the upright back of left and right sides door, need hold in the palm left and right sides door on one hand, the door rotates inwards around dragging with the other hand, hold in the palm that the door will open the rotation padlock on the left and right sides door about simultaneously, the front and back door closes behind the left and right sides door, loosen and adjust the hand of controlling the door padlock, the operation of one side can be ended to the buckleing rear. Then, when the lock on the other side of the left door and the right door and the front door and the rear door on the other side are locked, the other side of the left door and the right door needs to be pushed inwards for a distance because the left door and the right door are dislocated, the lock cannot be released by forcibly opening the lock, the other front door and the rear door are pulled inwards by the other hand to be closed, and the lock can be locked after the lock is aligned.

When the left door and the right door on the other side are locked, the locking is doubled, and at the moment, the two front doors and the two rear doors are locked with the first left door and the first right door to be upright, the latches at the two ends need to be forced to be turned over and opened, and then the latches are aligned and fastened. Since it is substantially impossible to operate two locks simultaneously, only one lock can be operated, but this is the problem: when the second left and right doors are turned to be close to the upright state, a front and back door with one hand and a left and right door with the other hand are needed; when a second lock of a second left door and a second right door is locked, the lock is in a 'no leg' state, the left door and the right door need to be pushed inwards by one hand, the lock buckle needs to be lifted by the other hand, the hand which needs to be lifted needs to be exchanged at this time, then the front door and the rear door are righted by the other hand, and the lock is locked after alignment. The visualization process is very complex.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a box body to solve the problems mentioned in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention actually comprises a plurality of technical solutions to solve different technical problems. All technical schemes comprise a chassis and four doors which are respectively vertically connected to four edges of the chassis, a front door is arranged on the front edge of the chassis, a left door is arranged on the left side of the chassis, a right door is arranged on the right side of the chassis, but the specific forms can be different:

scheme 1: a folding box based on can dismantle stand of falling: in this embodiment, at least one door is mounted to the chassis in the manner described below (referring to the general description of the embodiment below the embodiment 14) for mounting the rear door. When one door is installed on its corresponding side in the manner of the rear door as described below, the fixing grooves described below are provided at both ends of the side. Under this kind of scheme, this door can conveniently be dismantled, can conveniently lay down folding, but is difficult to drop under the general condition.

Scheme 2: a logistics box with an openable door leaf comprises: this corresponds to a box in which the door leaf itself can be opened, such as the front door described below. Although the door leaf of the other door may be installed to be openable in the manner of the front door described below, the specific form of the fixing groove, the pillar, and the fitting body is not emphasized, and the door leaf may be installed to be lifted only by installing the pillar to the fixing groove through the fitting body, and may be fixedly fitted or fitted in the manner described below.

Scheme 3: a self-locking folding box based on a hinge type: this corresponds to the mounting of the left and right doors, at least one of which is mounted to the folding box in the manner described below for the left door. In this installation mode, the door can be folded and the lock can be self-locked.

Scheme 4: a stackable logistics box: this includes only the stacking technique with the flow box upright, corresponding to the corresponding stacking of the first stacking groove and the stacking projection block described below.

Scheme 5: a stackable folding box: this includes stacking techniques in the folded condition of the folding box, corresponding to the corresponding stacking of the fixing grooves and the stacking projections described below. At the moment, the upright post is only required to be detached from the fixing groove, so that the door can be placed in the box to be folded after the upright post is detached.

Scheme 6: a folding box with openable door leaves: the technical scheme includes scheme 1+ scheme 2, at the moment, a detachable and foldable technical scheme is adopted between the fixing groove of the front door and the upright post, the front door leaf can be opened, and at least or all the four doors can be installed on the chassis according to the scheme.

Scheme 7: a folding box based on can dismantle stand and hinge combination that falls: this includes 1+ scheme 3, and for this moment, the front and back door is fixed in the chassis with the stand mode of can falling in the dismantlement, and the left and right doors is fixed in the chassis with the hinge mode, but does not include the concrete form of tool to lock.

Scheme 8: a can dismantle from locking type folding box that stand and hinge combine that falls: this contains 1+ scheme 3, and the right and left door is fixed in the chassis with the stand mode of can dismantling to fall for the front and back door this moment, and the right and left door is fixed in the chassis with the hinge mode, contains the concrete form of right and left door tool to lock.

Scheme 9: a door leaf openable folding box based on can dismantle stand and hinge combination that falls: this includes scenario 6+ scenario 3, where the folding box can be both folded and the door leaf opened.

Scheme 10: door leaf based on removable stand and hinge combination can open with from locking-type folding box: this includes scheme 8+ scheme 9.

Scheme 11: a dual-purpose stacked folding box. This includes option 4+ option 5, where the folding boxes can be stacked in either the upright or folded position.

Scheme 12: a stackable folding box based on detachable falling upright posts and hinges. This includes scheme 7+ scheme 5.

Scheme 13: a dual-purpose stacked folding box based on the combination of a detachable falling upright post and a hinge. This includes scheme 7+ scheme 11.

Scheme 14: an integrated folding box. This comprises scheme 1+ scheme 2+ scheme 3+ scheme 4+ scheme 5.

The general scheme of the invention (in practice scheme 14) is described below, all of which are determined in accordance with each scheme detailed in conjunction with the following description:

the invention comprises a chassis, a front door, a rear door, a left door and a right door, wherein the front door, the rear door, the left door and the right door are respectively and vertically connected with four edges of the chassis; the four corners of the chassis are provided with fixing grooves, namely a rear left fixing groove, a rear right fixing groove, a front left fixing groove and a front right fixing groove;

the rear door comprises a rear left upright post, a rear right upright post and a rear door leaf fixed between the rear left upright post and the rear right upright post;

the bottom of the rear left upright post is connected with a rear left mosaic body, and the rear left mosaic body is embedded into a rear left fixing groove;

the bottom of the rear right upright post is connected with a rear right chimeric body, and the rear right chimeric body is embedded into the rear right fixing groove;

the rear left fixing groove comprises a rear left bottom plate, a rear left side plate vertically connected to the left side of the rear left bottom plate, a rear left side plate vertically connected to the right side of the rear left bottom plate, and a rear left rear side plate vertically connected to the rear side of the rear left bottom plate; a vertical rear left sliding groove is formed in the right side face of the rear left side plate, the width of the top of the rear left sliding groove is d1, the width of the middle of the rear left sliding groove is d2, and the width of the bottom of the rear left sliding groove is d 3;

a rear left top boss is convexly arranged at the top of the left side surface of the rear left mosaic body, and the top end of the rear left top boss is connected to the bottom surface of the rear left upright post; a rear left bottom boss is convexly arranged at the bottom of the left side surface of the rear left mosaic body; the rear left top boss has a width d1 in the front-rear direction; the rear left bottom boss is a short cylinder with a small angle cut off by the rear left cutting inclined plane and the diameter d 5; the maximum width of the rear left bottom boss in the direction perpendicular to the rear left cutting bevel is d1, and the maximum width of the rear left bottom boss in the front-rear direction is d 4;

d1, d2, d3, d4 and d5 satisfy the following formula: d5 is more than or equal to d3 and more than or equal to d2, wherein d4 is more than or equal to d 1;

when the rear left mosaic body is embedded into the rear left fixing groove, the rear left bottom boss is positioned at the bottom of the rear left sliding groove, and the rear left top boss is embedded into the top of the rear left sliding groove;

the rear right fixing groove comprises a rear right bottom plate, a rear right side plate vertically connected to the right side of the rear right bottom plate, a rear right left side plate vertically connected to the left side of the rear right bottom plate, and a rear right rear side plate vertically connected to the rear side of the rear right bottom plate; a vertical rear right sliding groove is formed in the left side face of the rear right side plate, the width of the top of the rear right sliding groove is d1, the width of the middle of the rear right sliding groove is d2, and the width of the bottom of the rear right sliding groove is d 3;

a rear right top boss is convexly arranged at the top of the right side surface of the rear right embedded body, and the top end of the rear right top boss is connected to the bottom surface of the rear right upright post; a rear right bottom boss is convexly arranged at the bottom of the right side surface of the rear right chimeric body; the rear right top boss has a width d1 in the front-rear direction; the rear right bottom boss is a short cylinder with a small angle cut off by the rear right cutting inclined plane and the diameter of d 5; the maximum width of the rear right bottom boss in the direction perpendicular to the rear right cutting slope is d1, and the maximum width of the rear right bottom boss in the front-rear direction is d 4;

when the rear right chimeric body is embedded into the rear right fixing groove, the rear right bottom boss is positioned at the bottom of the rear right chute, and the rear right top boss is embedded into the top of the rear right chute;

a horizontal rear lower embedded strip is connected between the rear left fixing groove and the rear right fixing groove, and a rear upper embedded strip is fixed at the bottom of the rear door leaf; the rear side of the top surface of the rear lower embedded strip is vertically upwards provided with a rear lower embedded protrusion, and the rear side of the bottom surface of the rear upper embedded strip is provided with a rear upper embedded recess;

when the rear left mosaic body is embedded into the rear left fixing groove and the rear right mosaic body is embedded into the rear right fixing groove, the rear lower mosaic protrusion is embedded into the rear upper mosaic recess;

the front door comprises a front left upright, a front right upright and a front door fan positioned between the front left upright and the front right upright; the edge of the front door leaf protrudes towards the front to form a front frame, and the front frame comprises a front upper frame with a horizontal upper end, a front left frame with a vertical left end and a front right frame with a vertical right end;

a left limiting piece extends out of the left end of the front upper frame, and a right limiting piece extends out of the right end of the front upper frame; the front surface of the top end of the front left upright post is provided with a left limiting groove, and the front surface of the top end of the front right upright post is provided with a right limiting groove; the left limiting sheet is embedded into the left limiting groove from front to back, and the right limiting sheet is embedded into the right limiting groove from front to back;

a first front left lock hole is formed in the right side surface of the top of the front left upright post; the top end of the front left frame is provided with a second front left lock hole which is horizontally communicated with the first front left lock hole; the bottom end of the left part of the front upper frame is connected with a vertical front left lock fixing plate, and a third front left lock hole horizontally communicated with the second front left lock hole is formed in the front left lock fixing plate;

the front left lockset comprises a front left lockset upper lock rod and a front left lockset lower lock rod which are vertically connected at the end parts; the upper lock rod of the front left lockset penetrates through the third front left lock hole and the second front left lock hole from right to left in sequence and then is embedded into the first front left lock hole; a convex front left lockset boss is arranged on the side wall of the locking rod of the front left lockset, and a front left spring is arranged between the front left lockset boss and the front left lockset fixing plate;

a first front right lock hole is formed in the left side surface of the top of the front right upright post; the top end of the front right frame is provided with a second front right lock hole which is horizontally communicated with the first front right lock hole; the bottom end of the right part of the front upper frame is connected with a vertical front right lock fixing plate; a third front right lock hole which is horizontally communicated with the second front right lock hole is formed in the front right lock fixing plate;

the front right lock comprises a front right lock upper lock rod and a front right lock lower lock rod which are vertically connected at the end parts; the upper lock rod of the front right lockset penetrates through the third front right lock hole and the second front right lock hole from left to right in sequence and then is embedded into the first front right lock hole; a front right lock boss is arranged on the side wall of the upper lock rod of the front right lock, and a front right spring is arranged between the front right lock boss and the front right lock fixing plate;

the bottom of the front left upright post is connected with a front left mosaic body, and the front left mosaic body is embedded into the front left fixing groove;

the bottom of the front right upright post is connected with a front right mosaic body, and the front right mosaic body is embedded into the front right fixing groove;

the front left fixing groove comprises a front left bottom plate, a front left side plate vertically connected to the left side of the front left bottom plate, a front left side plate vertically connected to the right side of the front left bottom plate, and a front left front side plate vertically connected to the front side of the front left bottom plate; a vertical front left sliding groove is formed in the right side face of the front left side plate, the width of the top of the front left sliding groove is d1, the width of the middle of the front left sliding groove is d2, and the width of the bottom of the front left sliding groove is d 3;

a front left top boss is convexly arranged at the top of the left side surface of the front left mosaic body, and the top end of the front left top boss is connected to the bottom surface of the front left upright post; a front left bottom boss is convexly arranged at the bottom of the left side surface of the front left mosaic body; the front left top boss has a width d1 in the front-to-rear direction; the front left bottom boss is a short cylinder with a small angle cut off by the front left cutting inclined plane and the diameter d 5; the maximum width of the front left bottom boss in the direction perpendicular to the front left cutting inclined plane is d1, and the maximum width of the front left bottom boss in the front-rear direction is d 4;

when the front left mosaic body is embedded into the front left fixing groove, the front left bottom boss is positioned at the bottom of the front left sliding groove, and the front left top boss is embedded into the top of the front left sliding groove;

the front right fixing groove comprises a front right bottom plate, a front right side plate vertically connected to the right side of the front right bottom plate, a front right left side plate vertically connected to the left side of the front right bottom plate, and a front right front side plate vertically connected to the front side of the front right bottom plate; a vertical front right sliding groove is formed in the left side face of the front right side plate, the width of the top of the front right sliding groove is d1, the width of the middle of the front right sliding groove is d2, and the width of the bottom of the front right sliding groove is d 3;

a front right top boss is convexly arranged at the top of the right side surface of the front right chimeric body, and the top end of the front right top boss is connected to the bottom surface of the front right stand column; a front right bottom boss is convexly arranged at the bottom of the right side surface of the front right chimeric body; the front right top boss has a width d1 in the front-to-rear direction; the front right bottom boss is a short cylinder with a small angle cut off by the front right cutting inclined plane and the diameter d 5; the maximum width of the front right bottom boss in the direction perpendicular to the front right cutting inclined plane is d1, and the maximum width of the front right bottom boss in the front-rear direction is d 4;

when the front right chimeric body is embedded into the front right fixing groove, the front right bottom boss is positioned at the bottom of the front right sliding groove, and the front right top boss is embedded into the top of the front right sliding groove;

a horizontal front lower embedded strip is connected between the front left fixing groove and the front right fixing groove, and a front upper embedded strip is connected between the bottom end of the front left upright post and the bottom end of the front right upright post; the front side of the top surface of the front lower embedded strip is vertically upwards provided with a front lower embedded protrusion, and the front side of the bottom surface of the front upper embedded strip is provided with a front upper embedded recess;

when the front left mosaic body is embedded into the front left fixing groove and the front right mosaic body is embedded into the front right fixing groove, the front lower mosaic protrusion is embedded into the front upper mosaic recess;

the bottom of the front door leaf is provided with a front door leaf fixing strip, and a convex strip arranged at the top of the front upper embedded strip is embedded into a concave strip arranged at the bottom of the front door leaf fixing strip;

the left door comprises a left door leaf, a first left connecting sleeve is arranged at the bottom end of the left door leaf, a second left connecting sleeve is arranged at the left side edge of the chassis, and the first left connecting sleeve is hinged to the second left connecting sleeve through a left pin shaft after being axially communicated with the second left connecting sleeve;

the edge of the left door leaf protrudes towards the left to form a left frame, and the left frame comprises a left upper frame with a horizontal upper part, a left rear frame with a vertical rear side and a left front frame with a vertical front side;

the front side surface of the top of the rear left upright post is provided with a first left rear lock hole, and the rear side surface of the top of the front left upright post is provided with a first left front lock hole; the top end of the left rear frame is provided with a second left rear lock hole which is horizontally communicated with the first left rear lock hole, and the top end of the left front frame is provided with a second left front lock hole which is horizontally communicated with the first left front lock hole;

the bottom end of the rear part of the upper left frame is connected with a vertical rear left lock fixing plate, and the bottom end of the front part of the upper left frame is connected with a vertical front left lock fixing plate; a third left rear lock hole which is horizontally communicated with the second left rear lock hole is formed in the left rear lock fixing plate; a third left front lock hole which is horizontally communicated with the second left front lock hole is formed in the left front lock fixing plate;

the left rear lock comprises a left rear lock upper lock rod and a left rear lock lower lock rod which are vertically connected at the end parts; the rear end surface of the upper lock rod of the left rear lock is a sliding inclined surface;

the left rear lock rod sequentially penetrates through the third left rear lock hole and the second left rear lock hole from front to back and then is embedded into the first left rear lock hole; a convex left rear lock boss is arranged on the side wall of the upper lock rod of the left rear lock, and a left rear spring is arranged between the left rear lock boss and the left rear lock fixing plate;

the left front lock comprises a left front lock upper lock rod and a left front lock lower lock rod which are vertically connected at the end parts; the front end surface of the upper lock rod of the left front lock is a sliding inclined surface;

the left front lockset locking rod sequentially penetrates through the third left front lockhole and the second left front lockhole from back to front and then is embedded into the first left front lockhole; a left front lock boss is arranged on the side wall of the upper lock rod of the left front lock, and a left front spring is arranged between the left front lock boss and the left front lock fixing plate;

a vertical rear left limiting plate is further fixed on the front side of the left end of the rear left upright post, a vertical front left limiting plate is further fixed on the rear side of the left end of the front left upright post, and a left door limiting plate which is vertically connected to the left edge of the chassis is further arranged on the left side of the second left connecting sleeve;

the left door leaf is limited at the right sides of the rear left limiting plate, the front left limiting plate and the left door limiting plate;

a rear left limiting opening is formed in the rear left limiting plate, a rear left protruding block is convexly arranged on the left side surface of the left rear frame, and the rear left protruding block is embedded into the rear left limiting opening from right to left;

a front left limiting opening is formed in the front left limiting plate, a front left protruding block is convexly arranged on the left side surface of the left front frame, and the front left protruding block is embedded into the front left limiting opening from right to left;

the right door comprises a right door leaf, a first right connecting sleeve is arranged at the bottom end of the right door leaf, a second right connecting sleeve is arranged at the right side edge of the chassis, and the first right connecting sleeve is hinged with the second right connecting sleeve through a right pin shaft after being axially communicated;

the edge of the right door leaf protrudes towards the right to form a right frame, and the right frame comprises a right upper frame with a horizontal upper part, a right rear frame with a vertical rear side and a right front frame with a vertical front side;

the front side surface of the top of the rear right upright post is provided with a first right rear lock hole, and the rear side surface of the top of the front right upright post is provided with a first right front lock hole; the top end of the right rear frame is provided with a second right rear lock hole which is horizontally communicated with the first right rear lock hole, and the top end of the right front frame is provided with a second right front lock hole which is horizontally communicated with the first right front lock hole;

the bottom end of the rear part of the right upper frame is connected with a vertical right rear lock fixing plate, and the bottom end of the front part of the right upper frame is connected with a vertical right front lock fixing plate; a third right rear lock hole which is horizontally communicated with the second right rear lock hole is formed in the right rear lock fixing plate; a third right front lock hole which is horizontally communicated with the second right front lock hole is formed in the right front lock fixing plate;

the right rear lock comprises a right rear lock upper lock rod and a right rear lock lower lock rod which are vertically connected at the end parts; the rear end surface of the upper lock rod of the right rear lock is a sliding inclined surface;

the upper lock rod of the right rear lock sequentially penetrates through the third right rear lock hole and the second right rear lock hole from front to back and then is embedded into the first right rear lock hole; a convex right rear lock boss is arranged on the side wall of the locking rod of the right rear lock, and a right rear spring is arranged between the right rear lock boss and the right rear lock fixing plate;

the right front lock comprises a right front lock upper lock rod and a right front lock lower lock rod which are vertically connected at the end parts; the front end surface of the upper lock rod of the right front lock is a sliding inclined surface;

the upper lock rod of the right front lock sequentially penetrates through the third right front lock hole and the second right front lock hole from back to front and then is embedded into the first right front lock hole; a right front lock boss is arranged on the side wall of the upper lock rod of the right front lock, and a right front spring is arranged between the right front lock boss and the right front lock fixing plate;

a vertical rear right limiting plate is further fixed on the front side of the right end of the rear right upright post, a vertical front right limiting plate is further fixed on the rear side of the right end of the front right upright post, and a right door limiting plate vertically connected to the right edge of the chassis is further arranged on the right side of the second right connecting sleeve; the right door leaf is limited at the left sides of the rear right limiting plate, the front right limiting plate and the right door limiting plate;

a rear right limiting opening is formed in the rear right limiting plate, a rear right protruding block is convexly arranged on the right side face of the right rear frame, and the rear right protruding block is embedded into the rear right limiting opening from left to right; a front right limiting opening is formed in the front right limiting plate, a front right protruding block is convexly arranged on the right side surface of the right front frame, and the front right protruding block is embedded into the front right limiting opening from left to right;

the top edges of the front door leaf, the rear door leaf, the left door leaf and the right door leaf are all positioned on the same horizontal plane; the tops of the rear left upright post, the rear right upright post, the front left upright post and the front right upright post are all higher than the horizontal plane, and first stacking grooves are formed in the upper surface of the tops of the rear left upright post, the rear right upright post, the front left upright post and the front right upright post; a stacking positioning block is further fixed below each fixing groove on the base plate; a second stacking groove is formed in the bottom surface of each stacking positioning block, and a stacking protruding block which is aligned with the first stacking groove in the vertical direction is arranged at each second stacking groove; the top of each fixing groove is also provided with a fixing groove stacking protrusion which is aligned with the second stacking groove in the vertical direction.

One end of the left pin shaft is tightly fixed in the first left connecting sleeve through the left pin shaft boss, and the other end of the left pin shaft is arranged in the second left connecting sleeve in a sliding manner.

One end of the right pin shaft is tightly fixed in the first right connecting sleeve through the right pin shaft boss, and the other end of the right pin shaft is arranged in the second right connecting sleeve in a sliding manner.

A convex rear left limiting convex block is arranged at the bottom of the rear surface of the left door leaf; the bottom of the front surface of the left door leaf is provided with a convex front left limiting convex block.

The bottom of the rear surface of the right door leaf is provided with a convex rear right limiting convex block; the bottom of the front surface of the right door leaf is provided with a convex front right limiting convex block.

The advantages of all the above technical solutions over the prior art are:

1. the folding is convenient:

for the left door and the right door, the left door and the right door can be laid down in the box by rotating only by pulling the left door lock and the right door lock inwards. The pin shaft is designed for special function, penetrates into two coaxial sleeves of the left door, the right door and the chassis, and is characterized in that two groups of bosses in the vertical direction are punched at the position where the pin shaft penetrates into one sleeve, and two bosses in each group are formed. When the anti-blocking sleeve is installed, the pin shaft is embedded from one end, the front end of the pin shaft can smoothly enter the sleeve without a boss, and the rear end of the pin shaft is in interference fit with the sleeve when reaching the boss, namely, one sleeve is locally deformed and expanded after being extruded by the boss, so that the anti-blocking effect is achieved. The hinge has the characteristics of ingenious structure, simple installation, firm connection, convenient disassembly and convenient maintenance.

For the front and rear doors, the front and rear doors can be laid down in the box by slightly lifting the front and rear doors. Generally, the fitting bodies at the bottoms of the front and rear doors are not easy to be separated from the fixing grooves, so that the front and rear doors can be prevented from being separated accidentally. But through rotating the chimera to specific angle, can also with front and back door separation chassis to can maintain front and back door. In a word, the front and back door can be erect, can fall down, can abduct and stand to one side, more can take off from the chassis, convenient loading and unloading and maintenance.

2. The tool to lock is fixed convenient effective:

the limiting pieces (a left limiting piece and a right limiting piece) are arranged beside the lockset of the front door leaf and are limited by the upright posts, so that the front door leaf can be prevented from falling into the box to scratch the interior of the left door and the right door after the lockset is opened.

The sliding inclined planes are arranged on the end faces of the lockset of the left door and the right door, so that when the door is lifted and fixed, the door can be self-locked on the upright post through the sliding inclined planes without manually pulling the lockset; in addition, the lockset on the upper parts of the left door and the right door is a spring lock, the natural state is a locking state, namely the end part of the lockset extends out for a certain distance, usually, when the lockset is in the locking state, the end part of the lockset extends into the upright post, because of the spring relation, even if the left door and the right door are opened, the lockset extends out under the action of the spring by only loosening the hand, and at the moment, if the left door and the right door are operated by mistake, the inner panels of the front door and the rear door can be scratched or even torn. The limiting convex blocks are arranged at the bottoms of the two side surfaces of the left door leaf and the right door leaf, so that the left door leaf and the right door leaf are separated from the front door and the rear door by a certain distance, and the protruding lock of the left door leaf and the right door leaf can not reach the inner wall of the front door and the rear door, so that the purpose of keeping away from scratches is achieved.

3. The front door fan can be opened:

in the upright condition, sometimes the goods are put in or taken out or the inside is observed by opening the front door leaf, and the whole front door is not required to be detached, and the front door leaf can be detached by pulling the lockset of the front door leaf inwards and lifting the front door leaf or slightly rotating the front door leaf. Under the object carrying state, because raw materials such as rubber have the soft weight property, the goods are deposited after a period of time, extrude chassis and four walls, under the tight state that rises, can open the qianmen tool to lock, because preceding door leaf bottom is rotatable meshing relation, still can utilize the tight power of rising to take off the preceding door leaf outward conveniently smoothly, realize artifical or robot freely get goods, at this moment, other three sides still are in the locking state.

4. Double stack control, a double stack design, is yet another bright spot for this type of folding metal box.

Under the empty folding condition of carrying of case, through the cooperation at the heap locating piece that sets up of chassis bottom and fixed slot top, can realize piling up. The inclined planes of the two vertical directions of the second stacking groove are tightly matched with the two side faces of the top of the fixed groove and are limited in two directions, so that the stacking is large in butt joint space due to the fact that the inclined planes are in butt joint, and after the stacking falls, the fit clearance is small, and the defect that a falling layer is loose is completely overcome.

In the loading and landing state, the bearing weight is heavy, and the self weight of the folding box is added, so that the landing stability is very important. Between every two folding boxes that pile up, the first stacking groove in stand top of lower floor's case sets up the trapezoidal fit face in inclined plane, agrees with the protruding piece that piles up of upper floor's bottom of the case dish foot, and simultaneously, the stand top designs into and piles up the corresponding evagination rectangle framework in two vertical direction's inclined plane of recess with the second, from this, has increased an gomphosis again, makes it when heavy load condition whereabouts layer, and is more stable and firm. Meanwhile, the stacking piece has large size, the target point is clear during stacking, the identification degree of a forklift operator is high, and the problem that many customers are always headache for many years is solved.

In conclusion, the product of the invention integrally adopts various modern processing technologies, and has clean, bright, beautiful and atmospheric appearance. Each hinge point adopts a precision casting process and is engaged and butted in the modes of sliding, rotating, buckling and the like. The lockset has special structure, compact structure, automatic rebound and self-locking. Greatly enhances the stability and safety performance in the transfer process. The frames of all the parts are made of high-strength materials, and the bearing capacity is further enhanced. The parts are meshed by special tubes, the edges and corners are clear, the meshing is regular, the whole matching is proper, and the device is a brand-new storage and transportation product.

Drawings

FIG. 1 is a perspective view from the front left toward the present invention;

FIG. 2 is a perspective view of the present invention from the rear left;

FIG. 3 is a perspective view from the rear right toward the present invention;

FIG. 4 is a perspective view of the present invention from the front right;

FIG. 5 is an enlarged view of box A of FIG. 4;

FIG. 6 is a bottom perspective view of the present invention;

FIG. 7 is an enlarged view of box B of FIG. 6;

FIG. 8 is a perspective view from the front right toward the chassis of the present invention;

FIG. 9 is an enlarged view of box C of FIG. 8;

FIG. 10 is a perspective view from the rear right toward the inventive chassis;

FIG. 11 is an enlarged view of box D of FIG. 10;

FIG. 12 is a rear view of the rear door of the present invention;

FIG. 13 is a right side view of the rear door of the present invention;

FIG. 14 is a left side elevational view of the rear door of the present invention;

FIG. 15 is a front elevational view of the front door of the present invention;

FIG. 16 is an enlarged view of block E of FIG. 15;

FIG. 17 is an enlarged view of box F in FIG. 15;

FIG. 18 is a left side view of the front door of the present invention;

FIG. 19 is an enlarged view of block G of FIG. 18;

FIG. 20 is a right side view of the front door of the present invention;

FIG. 21 is an enlarged view of box H in FIG. 20;

FIG. 22 is a perspective view of the front door of the present invention;

FIG. 23 is a left side view of the left door of the present invention;

FIG. 24 is a front view of the left door of the present invention;

FIG. 25 is a top view of the left door of the present invention;

FIG. 26 is an enlarged view of block J of FIG. 25;

FIG. 27 is a schematic view of the insertion of the front left bottom boss into the front left chute of the present invention;

FIG. 28 is a schematic view of a front left chimera of the present invention secured to a front left fixation groove;

FIG. 29 is an enlarged view of box K of FIG. 28;

FIG. 30 is a schematic view of the front left chimera of the present invention folded with the front left upright upside down;

FIG. 31 is a schematic view of the front left chimera of the present invention that is not vertically extractable;

FIG. 32 is a stacked schematic view of the present invention in a folded state;

FIG. 33 is a schematic stacking view of the present invention in a stored condition;

FIG. 34 is a schematic view of the connection of the left pin shaft to the first left adapter sleeve and the second left adapter sleeve of the present invention.

In the figure:

1. front door, 2, left door, 3, right door, 4, back door, 5 and chassis;

111. front left column, 112, front right column, 121, front left frame, 122, front right frame, 13, front upper frame, 131, left limiting piece, 132, right limiting piece, 133, front door leaf, 141, front left lock fixing plate, 1411, front left spring, 1412, front left lock boss, 1413, front left lock upper lock bar, 142, front right lock fixing plate, 1421, front right spring, 1422, front right lock boss, 1423, front right lock upper lock bar, 151, front left chimera, 1511, front left top boss, 1512, front left bottom boss, 1521, front right top boss, 1522, front right bottom boss, 152, front right chimera, 161, front left limiting plate, 162, front right limiting plate, 171, front left limiting opening, 172, front right limiting opening, 18, front door leaf fixing strip, 19, front upper embedding strip;

221. the left rear frame 222, the left front frame 23, the left upper frame 231, the left door leaf 251, the left rear lock upper lock rod 252, the left front lock upper lock rod 261, the rear left protruding block 262, the front left protruding block 271, the left rear spring 272, the left front spring 28, the first left connecting sleeve 29 and the rear left limiting protruding block;

411. a rear left upright column, 412, a rear right upright column, 451, a rear left mosaic body, 452, a rear right mosaic body, 461, a rear left limit plate, 462, a rear right limit plate, 49 and a rear upper mosaic strip;

51. front left fixing groove 511, front left bottom plate 512, front left right side plate 513, front left front plate 514, front left side plate 515, front left sliding groove 52, front right fixing groove 53, back left fixing groove 531, back left bottom plate 532, back left side plate 533, back left back plate 534, back left and right side plate 535, back left sliding groove 54, back right fixing groove 55, second left connecting sleeve 56, left door limiting plate 57, right door limiting plate 58, front lower tabling strip 59, back lower tabling strip;

6. the stacking protrusion blocks and the fixing grooves are stacked and protruded, and the stacking positioning blocks and the first stacking grooves and the second stacking grooves are stacked and protruded, respectively 61 and 62 and 63.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 34, the general scheme of the present invention includes a chassis 5, and a front door 1, a rear door 4, a left door 2, and a right door 3 vertically connected to four sides of the chassis 5, respectively;

the four corners of the chassis 5 are provided with fixing grooves, namely a rear left fixing groove 53, a rear right fixing groove 54, a front left fixing groove 51 and a front right fixing groove 52;

the rear door 4 comprises a rear left upright 411, a rear right upright 412 and a rear door leaf fixed between the rear left upright 411 and the rear right upright 412;

the bottom of the rear left upright column 411 is connected with a rear left mosaic body 451, and the rear left mosaic body 451 is embedded into the rear left fixing groove 53;

the bottom of the rear right upright 412 is connected with a rear right mosaic body 452, and the rear right mosaic body 452 is embedded into the rear right fixing groove 54;

the rear left fixing groove 53 includes a rear left bottom plate 531, a rear left side plate 532 vertically connected to the left side of the rear left bottom plate 531, a rear left and right side plate 534 vertically connected to the right side of the rear left bottom plate 531, and a rear left rear side plate 533 vertically connected to the rear side of the rear left bottom plate 531; a vertical rear left sliding groove 535 is formed in the right side surface of the rear left side plate 532, the top width of the rear left sliding groove 535 is d1, the middle width of the rear left sliding groove 535 is d2, and the bottom width of the rear left sliding groove 535 is d 3;

a rear left top boss is convexly arranged at the top of the left side surface of the rear left chimeric body 451, and the top end of the rear left top boss is connected to the bottom surface of the rear left upright column 411; a rear left bottom boss is convexly arranged at the bottom of the left side surface of the rear left chimeric body 451; the rear left top boss has a width d1 in the front-rear direction; the rear left bottom boss is a short cylinder with a small angle cut off by the rear left cutting inclined plane and the diameter d 5; the maximum width of the rear left bottom boss in the direction perpendicular to the rear left cutting bevel is d1, and the maximum width of the rear left bottom boss in the front-rear direction is d 4;

when the rear left chimera 451 is embedded in the rear left fixation slot 53, the rear left bottom boss is located at the bottom of the rear left sliding groove 535, and the rear left top boss is embedded in the top of the rear left sliding groove 535;

the rear right fixing groove 54 includes a rear right bottom plate, a rear right side plate vertically connected to the right side of the rear right bottom plate, a rear right left side plate vertically connected to the left side of the rear right bottom plate, and a rear right rear side plate vertically connected to the rear side of the rear right bottom plate; a vertical rear right sliding groove is formed in the left side face of the rear right side plate, the width of the top of the rear right sliding groove is d1, the width of the middle of the rear right sliding groove is d2, and the width of the bottom of the rear right sliding groove is d 3;

a rear right top boss is convexly arranged at the top of the right side surface of the rear right chimeric body 452, and the top end of the rear right top boss is connected to the bottom surface of the rear right upright column 412; a rear right bottom boss is convexly arranged at the bottom of the right side surface of the rear right chimeric body 452; the rear right top boss has a width d1 in the front-rear direction; the rear right bottom boss is a short cylinder with a small angle cut off by the rear right cutting inclined plane and the diameter of d 5; the maximum width of the rear right bottom boss in the direction perpendicular to the rear right cutting slope is d1, and the maximum width of the rear right bottom boss in the front-rear direction is d 4;

when the rear right chimeric body 452 is embedded in the rear right fixing groove 54, the rear right bottom boss is positioned at the bottom of the rear right chute, and the rear right top boss is embedded in the top of the rear right chute;

a horizontal rear lower tabling strip 59 is connected between the rear left fixing groove 53 and the rear right fixing groove 54, and a rear upper tabling strip 49 is fixed at the bottom of the rear door leaf; the rear lower embedding protrusion is vertically arranged upwards at the rear side of the top surface of the rear lower embedding strip 59, and the rear upper embedding recess is arranged at the rear side of the bottom surface of the rear upper embedding strip 49;

when the rear left fitting body 451 is fitted into the rear left fixing groove 53 and the rear right fitting body 452 is fitted into the rear right fixing groove 54, the rear lower fitting protrusion is fitted into the rear upper fitting recess;

the front door 1 includes a front left pillar 111, a front right pillar 112, and a front door fan 133 located between the front left pillar 111 and the front right pillar 112; the edge of the front door leaf 133 protrudes forward to form a front frame, and the front frame includes a front upper frame 13 with a horizontal upper end, a front left frame 121 with a vertical left end, and a front right frame 122 with a vertical right end;

a left limiting piece 131 extends from the left end of the front upper frame 13, and a right limiting piece 132 extends from the right end of the front upper frame 13; the front surface of the top end of the front left upright 111 is provided with a left limiting groove, and the front surface of the top end of the front right upright 112 is provided with a right limiting groove; the left limiting sheet 131 is embedded into the left limiting groove from front to back, and the right limiting sheet 132 is embedded into the right limiting groove from front to back;

a first front left lock hole is formed in the right side surface of the top of the front left upright post 111; the top end of the front left frame 121 is provided with a second front left locking hole which is horizontally communicated with the first front left locking hole; the bottom end of the left part of the front upper frame 13 is connected with a vertical front left lock fixing plate 141, and a third front left lock hole horizontally communicated with the second front left lock hole is formed in the front left lock fixing plate 141;

the front left lockset comprises a front left lockset upper locking rod 1413 and a front left lockset lower locking rod which are vertically connected at the end parts; the front left lockset locking rod 1413 sequentially penetrates through the third front left locking hole and the second front left locking hole from right to left and then is embedded into the first front left locking hole; a convex front left lock boss 1412 is arranged on the side wall of the front left lock locking rod 1413, and a front left spring 1411 is arranged between the front left lock boss 1412 and the front left lock fixing plate 141;

a first front right lock hole is formed in the left side surface of the top of the front right upright post 112; the top end of the front right frame 122 is provided with a second front right lock hole which is horizontally communicated with the first front right lock hole; the bottom end of the right part of the front upper frame 13 is connected with a vertical front right lock fixing plate 142; the front right lock fixing plate 142 is provided with a third front right lock hole which is horizontally communicated with the second front right lock hole;

the front right lock comprises a front right lock upper lock rod 1423 and a front right lock lower lock rod which are vertically connected at the end parts; the front right lock locking bar 1423 sequentially passes through the third front right lock hole and the second front right lock hole from left to right and then is embedded into the first front right lock hole; a front right lock boss 1422 is arranged on the side wall of the front right lock upper lock bar 1423, and a front right spring 1421 is arranged between the front right lock boss 1422 and the front right lock fixing plate 142;

the bottom of the front left upright post 111 is connected with a front left mosaic body 151, and the front left mosaic body 151 is embedded into the front left fixing groove 51;

the bottom of the front right upright post 112 is connected with a front right mosaic 152, and the front right mosaic 152 is embedded in the front right fixing groove 52;

the front left fixing groove 51 includes a front left bottom plate 511, a front left side plate 514 vertically connected to the left side of the front left bottom plate 511, a front left and right side plate 512 vertically connected to the right side of the front left bottom plate 511, and a front left front side plate 513 vertically connected to the front side of the front left bottom plate 511; a vertical front left sliding groove 515 is formed in the right side surface of the front left side plate 514, the width of the top of the front left sliding groove 515 is d1, the width of the middle of the front left sliding groove 515 is d2, and the width of the bottom of the front left sliding groove 515 is d 3;

a front left top boss 1511 is convexly arranged at the top of the left side surface of the front left mosaic body 151, and the top end of the front left top boss 1511 is connected to the bottom surface of the front left upright post 111; a front left bottom boss 1512 is convexly arranged at the bottom of the left side surface of the front left chimeric body 151; the front left top boss 1511 has a width d1 in the front-rear direction; front left bottom boss 1512 is a short cylinder with a small angle cut off by the front left cutting bevel and a diameter d 5; the maximum width of the front left bottom boss 1512 in the direction perpendicular to the front left cut bevel is d1, and the maximum width of the front left bottom boss 1512 in the front-to-rear direction is d 4;

when the front left chimeric body 151 is embedded in the front left fixing groove 51, the front left bottom boss 1512 is located at the bottom of the front left sliding groove 515, and the front left top boss 1511 is embedded in the top of the front left sliding groove 515;

the front right fixing groove 52 includes a front right bottom plate, a front right side plate vertically connected to the right side of the front right bottom plate, a front right left side plate vertically connected to the left side of the front right bottom plate, and a front right front side plate vertically connected to the front side of the front right bottom plate; a vertical front right sliding groove is formed in the left side face of the front right side plate, the width of the top of the front right sliding groove is d1, the width of the middle of the front right sliding groove is d2, and the width of the bottom of the front right sliding groove is d 3;

a front right top boss 1521 is convexly arranged at the top of the right side surface of the front right chimeric body 152, and the top end of the front right top boss 1521 is connected to the bottom surface of the front right upright post 112; a front right bottom boss 1522 is convexly arranged at the bottom of the right side surface of the front right chimeric body 152; the front right top boss 1521 has a width d1 in the front-rear direction; the front right bottom boss 1522 is a short cylinder with a small angle cut off by the front right cutting inclined plane and the diameter d 5; the maximum width of the front right bottom boss 1522 in the direction perpendicular to the front right cutting slope is d1, and the maximum width of the front right bottom boss 1522 in the front-rear direction is d 4;

when the front right mosaic body 152 is embedded into the front right fixing groove 52, the front right bottom boss 1522 is positioned at the bottom of the front right chute, and the front right top boss 1521 is embedded into the top of the front right chute;

a horizontal front lower tabling strip 58 is connected between the front left fixing groove 51 and the front right fixing groove 52, and a front upper tabling strip 19 is connected between the bottom end of the front left upright post 111 and the bottom end of the front right upright post 112; the front side of the top surface of the front lower embedding strip 58 is vertically upwards provided with a front lower embedding bulge, and the front side of the bottom surface of the front upper embedding strip 19 is provided with a front upper embedding recess;

when the front left mosaic body 151 is embedded in the front left fixing groove 51 and the front right mosaic body 152 is embedded in the front right fixing groove 52, the front lower mosaic projection is embedded in the front upper mosaic recess;

a front door leaf fixing strip 18 is arranged at the bottom of the front door leaf 133, and a convex strip arranged at the top of the front upper embedded strip 19 is embedded into a concave strip arranged at the bottom of the front door leaf fixing strip 18;

the left door 2 comprises a left door leaf 231, a first left connecting sleeve 28 is arranged at the bottom end of the left door leaf 231, a second left connecting sleeve 55 is arranged at the left side edge of the chassis 5, and the first left connecting sleeve 28 is hinged to the second left connecting sleeve 55 through a left pin shaft after being axially communicated;

the edge of the left door leaf 231 protrudes towards the left to form a left frame, and the left frame comprises a left upper frame 23 with a horizontal upper part, a left rear frame 221 with a vertical rear side, and a left front frame 222 with a vertical front side;

a first left rear lock hole is formed in the front side surface of the top of the rear left upright column 411, and a first left front lock hole is formed in the rear side surface of the top of the front left upright column 111; the top end of the left rear frame 221 is provided with a second left rear lock hole which is horizontally communicated with the first left rear lock hole, and the top end of the left front frame 222 is provided with a second left front lock hole which is horizontally communicated with the first left front lock hole;

the bottom end of the rear part of the left upper frame 23 is connected with a vertical left rear lock fixing plate, and the bottom end of the front part of the left upper frame 23 is connected with a vertical left front lock fixing plate; a third left rear lock hole which is horizontally communicated with the second left rear lock hole is formed in the left rear lock fixing plate; a third left front lock hole which is horizontally communicated with the second left front lock hole is formed in the left front lock fixing plate;

the left rear lock comprises a left rear lock upper lock rod 251 and a left rear lock lower lock rod which are vertically connected at the end parts; the rear end face of the upper lock rod 251 of the left rear lock is a sliding inclined plane;

the left rear lock upper lock rod 251 sequentially penetrates through the third left rear lock hole and the second left rear lock hole from front to back and then is embedded into the first left rear lock hole; a convex left rear lock boss is arranged on the side wall of the upper lock rod 251 of the left rear lock, and a left rear spring 271 is arranged between the left rear lock boss and the left rear lock fixing plate;

the left front lock comprises a left front lock upper lock rod 252 and a left front lock lower lock rod which are vertically connected at the end parts; the front end face of the left front lock upper lock rod 252 is a sliding inclined plane;

the left front lock upper lock rod 252 sequentially penetrates through the third left front lock hole and the second left front lock hole from back to front and then is embedded into the first left front lock hole; a left front lock boss is arranged on the side wall of the left front lock upper lock rod 252, and a left front spring 272 is arranged between the left front lock boss and the left front lock fixing plate;

a vertical rear left limiting plate 461 is further fixed on the front side of the left end of the rear left upright column 411, a vertical front left limiting plate 161 is further fixed on the rear side of the left end of the front left upright column 111, and a left door limiting plate 56 vertically connected to the left edge of the chassis 5 is further arranged on the left side of the second left connecting sleeve 55;

the left door leaf 231 is limited at the right sides of the rear left limiting plate 461, the front left limiting plate 161 and the left door limiting plate 56;

a rear left limiting opening is formed in the rear left limiting plate 461, a rear left protruding block 261 protrudes from the left side surface of the left rear frame 221, and the rear left protruding block 261 is embedded into the rear left limiting opening from right to left;

the front left limit plate 161 is provided with a front left limit opening 171, the left side surface of the left front frame 222 is convexly provided with a front left protruding block 262, and the front left protruding block 262 is embedded into the front left limit opening 171 from right to left;

the right door 3 comprises a right door leaf, a first right connecting sleeve is arranged at the bottom end of the right door leaf, a second right connecting sleeve is arranged at the edge of the right side of the chassis 5, and the first right connecting sleeve is axially communicated with the second right connecting sleeve and then hinged through a right pin shaft;

a first right rear lock hole is formed in the front side surface of the top of the rear right upright column 412, and a first right front lock hole is formed in the rear side surface of the top of the front right upright column 112; the top end of the right rear frame is provided with a second right rear lock hole which is horizontally communicated with the first right rear lock hole, and the top end of the right front frame is provided with a second right front lock hole which is horizontally communicated with the first right front lock hole;

a vertical rear right limiting plate 462 is further fixed to the front side of the right end of the rear right upright 412, a vertical front right limiting plate 162 is further fixed to the rear side of the right end of the front right upright 112, and a right door limiting plate 57 vertically connected to the right edge of the chassis 5 is further arranged on the right side of the second right connecting sleeve; the right door leaf is limited at the left side of the rear right limiting plate 462, the front right limiting plate 162 and the right door limiting plate 57;

a rear right limiting opening is formed in the rear right limiting plate 462, a rear right protruding block is convexly arranged on the right side surface of the right rear frame, and the rear right protruding block is embedded into the rear right limiting opening from left to right; a front right limiting opening 172 is formed in the front right limiting plate 162, a front right protruding block is protruded from the right side surface of the right front frame, and the front right protruding block is embedded into the front right limiting opening 172 from left to right;

the bottom of the rear surface of the left door leaf 231 is provided with a convex rear left limiting convex block 29; the bottom of the front surface of the left door leaf 231 is provided with a convex front left limiting convex block.

The bottom of the rear surface of the right door leaf is provided with a convex rear right limiting convex block; the bottom of the front surface of the right door leaf is provided with a convex front right limiting convex block;

by utilizing the convex block, the left door, the right door and the front door and the rear door can be separated by a section of space, and the inner walls of the front door and the rear door are prevented from being scratched by the lockset of the left door and the right door when the left door and the right door are buckled.

The top edges of the front door leaf 133, the rear door leaf, the left door leaf 231 and the right door leaf are all located on the same horizontal plane; the tops of the rear left upright column 411, the rear right upright column 412, the front left upright column 111 and the front right upright column 112 are all higher than the horizontal plane, and the upper surface of the tops of the front left upright column, the front right upright column 111 and the front right upright column 112 is provided with a first stacking groove 61; a stacking positioning block 6 is further fixed below each fixing groove on the chassis 5; a second stacking groove 62 is formed in the bottom surface of each stacking positioning block 6, and a stacking protrusion block 63 which is aligned with the first stacking groove 61 in the vertical direction is arranged at each second stacking groove 62; the top of each fixing groove is also provided with a fixing groove stacking projection 64 vertically aligned with the second stacking groove 62.

The two fixing grooves (the rear left fixing groove 53 and the rear right fixing groove 54) positioned at the rear part are in mirror symmetry, the two fixing grooves (the front left fixing groove 51 and the front right fixing groove 52) positioned at the front part are also in mirror symmetry, and mirror symmetry planes are vertical planes which face the left and right directions and penetrate through the center of the chassis 5;

the two fixing grooves (the rear left fixing groove 53 and the front left fixing groove 51) positioned on the left side are in mirror symmetry, the two fixing grooves (the rear right fixing groove 54 and the front right fixing groove 52) positioned on the right side are also in mirror symmetry, and mirror symmetry planes are vertical planes which face the front and back direction and penetrate through the center of the chassis 5;

the chimeras (front left chimera 151, front right chimera 152, rear left chimera 451, rear right chimera 452) corresponding to each fixing groove all satisfy the completely same mirror image relationship. In addition, the left door 2 and the right door 3 are arranged in a mirror symmetry mode, and a symmetry plane is a vertical plane which faces the front-back direction and penetrates through the center of the chassis 5;

we illustrate the connection and function of the left fixation groove 51 and the left chimera 151, and the connection of the other three groups of fixation grooves and chimeras is completely determined by mirror image:

as shown in fig. 27, during installation, the front left fitting body 151 needs to be rotated by an angle (the angle can be 45 °, that is, the angle between the front left fitting body 151 and the horizontal plane is 45 °) so that an inclined plane of the front left bottom boss 1512 cut off is located in the vertical direction, and therefore, when the horizontal width of the inclined plane and the top width of the front left sliding chute 515 are the same length value of d1, the front left bottom boss 1512 can be inserted into the front left sliding chute 515. After the insertion, the front left bottom boss 1512 enters the middle of the front left sliding groove 515 so as to rotate the front left insertion body 151, and at this time, the front left insertion body 151 can be rotated to the vertical direction and continuously moved downward, so that the front left bottom boss 1512 can be inserted into the bottom of the front left sliding groove 515, the front left top boss 1511 can be inserted into the top of the front left sliding groove 515, and at this time, the front left insertion body 151 is completely fixed to the front left sliding groove 515, as shown in fig. 28 to 29.

When the front left fitting body 151 and the front left upright 111 connected to the upper portion thereof need to be rotated to a lying state (at this time, the front door 1 can be laid down), the front left fitting body 151 can be lifted to make the front left top boss 1511 separate from the front left sliding groove 515, and then the front left fitting body 151 is rotated to be horizontal, as shown in fig. 30.

Generally, for example, in the vertical state, as shown in fig. 31, the front left fitting body 151 is not easily detached from the front left fixing groove 51, and can be detached only by manually adjusting the angle until the inclined plane of the front left bottom boss 1512 is in the vertical direction, which is determined by the relationship of d1 < d4 < d5 < d3 < d2, so that the front left fitting body 151 can be prevented from being accidentally detached from the front left fixing groove 51. With such a connection, inward folding of the front door 1 can be achieved. When the front door 1 needs to be replaced and the front door is worn or has a fault, the front left mosaic body 151 can be separated from the front left fixing groove 51, so that the parts can be maintained or replaced independently.

The installation and folding process of the front door 1 is described above, and the installation and folding process of the rear door 4 is completely determined by symmetry.

For the whole folding box (logistics box), when the folding box needs to be folded, the lockset on the left door 2 is pulled inwards, so that the left door 2 can be released from the rear left upright column 411 and the front left upright column 111, and the bottom of the left door is hinged to the chassis 5, so that the left door can be laid inside the folding box through rotation; in exactly the same way, the right door 3 can be laid down inside the folding box; then, the mosaic bodies of the front door 1 and the rear door 4 can be folded in the folding box after being lifted; thus, the whole folding box can be folded.

Stacking of a plurality of folded folding boxes is possible, and specifically, as shown in fig. 32, the stacking projection 63 at the bottom of the folding box located above is fitted into the fixing groove located below, and due to the cooperation of the second stacking groove 62 and the fixing groove stacking projection 64, the stacking can be tightly achieved. Four angles all pile up respectively according to above-mentioned mode can. In addition, the stacking can be repeated to form multi-layer stacking, so that the storage space of the folding box can be greatly saved;

when the folding box is needed to be used for storing articles, the front door 1 and the rear door 4 are lifted firstly and then are installed in the fixing grooves, then the left door 2 is lifted, the left door 2 is limited by the left door limiting plate 56, the rear left limiting plate 461 and the front left limiting plate 161 so as not to be overturned, the rear left protruding block 261 and the front left protruding block 262 are respectively embedded into the rear left limiting opening and the front left limiting opening 171, and meanwhile, due to the arrangement of the sliding inclined planes at the end parts of the left rear lock upper locking rod 251 and the left front lock upper locking rod 252, the lock can retreat through the contact of the sliding inclined planes with the rear left upright column 411 and the front left upright column 111 in the moving process so as to be embedded into the openings arranged on the upright columns. The configuration of the sliding ramp is shown in fig. 26. The lifting and fixing process of the right door 3 is exactly the same as that of the left door 2.

When storing articles, the front door leaf 133 can be detached separately to facilitate the insertion or removal of the objects, as follows: the front door leaf 133 can be separated from the front left upright post 111 and the front right upright post 112 by pulling the lockset of the front door 1 inwards, and at the moment, the front door leaf 133 is lifted, so that the front door leaf fixing strip 18 can be separated from the front upper embedded strip 19, and the front door leaf 133 is detached; in the above process, due to the arrangement of the left and

right stoppers

131 and 132, the front door leaf 133 will not fall into the folding box, so as to prevent the inner surfaces of the left and

right doors

2 and 3 from being scratched by the protruding front left and right

lock locking rods

1413 and 1423 pushed by the spring. When the front door 133 is installed, the process may be performed in the reverse direction. In the state of storing articles in the folding boxes, stacking can be achieved, specifically, one folding box is placed above the other folding box, the stacking convex block 63 of the upper folding box is embedded into the first stacking groove 61 of the lower folding box, and stacking can be achieved by embedding all four corners, as shown in fig. 33.

Fig. 34 shows a schematic connection diagram of the first left connecting sleeve 28 and the second left connecting sleeve 55, during installation, the left pin is forcibly hammered into the two sleeves from left to right, the outer diameter of the left pin is slightly smaller than the inner diameters of the first left connecting sleeve 28 and the second left connecting sleeve 55, but a left pin boss is arranged on one side, for example, the left side in the drawing, so that the right side of the left pin can smoothly enter the second left connecting sleeve 55 through the first left connecting sleeve 28, and the two left pin bosses can be embedded into the first left connecting sleeve 28 and fixed by forcibly hammering the left pin, so that the hinging is realized. The connection of the first left adapter sleeve to the second left adapter sleeve is exactly the same as described above.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A stacked folding box based on the combination of a detachable laid-down upright post and a hinge is characterized by comprising a chassis (5), and a front door (1), a rear door (4), a left door (2) and a right door (3) which are vertically connected with four edges of the chassis (5);

fixing grooves are formed in four corners of the chassis (5), and are a rear left fixing groove (53), a rear right fixing groove (54), a front left fixing groove (51) and a front right fixing groove (52);

the rear door (4) comprises a rear left upright (411), a rear right upright (412) and a rear door leaf fixed between the rear left upright (411) and the rear right upright (412);

the bottom of the rear left upright post (411) is connected with a rear left mosaic body (451), and the rear left mosaic body (451) is embedded into the rear left fixing groove (53);

the bottom of the rear right upright post (412) is connected with a rear right embedded body (452), and the rear right embedded body (452) is embedded into the rear right fixing groove (54);

the rear left fixing groove (53) comprises a rear left bottom plate (531), a rear left side plate (532) vertically connected to the left side of the rear left bottom plate (531), a rear left and right side plate (534) vertically connected to the right side of the rear left bottom plate (531), and a rear left rear side plate (533) vertically connected to the rear side of the rear left bottom plate (531); a vertical rear left sliding groove (535) is formed in the right side surface of the rear left side plate (532), the width of the top of the rear left sliding groove (535) is d1, the width of the middle of the rear left sliding groove (535) is d2, and the width of the bottom of the rear left sliding groove (535) is d 3;

a rear left top boss is convexly arranged at the top of the left side surface of the rear left mosaic body (451), and the top end of the rear left top boss is connected to the bottom surface of the rear left upright post (411); a rear left bottom boss is convexly arranged at the bottom of the left side surface of the rear left mosaic body (451); the rear left top boss has a width d1 in the front-rear direction; the rear left bottom boss is a short cylinder with a small angle cut off by the rear left cutting inclined plane and the diameter d 5; the maximum width of the rear left bottom boss in a direction perpendicular to the rear left cutting bevel is d1, and the maximum width of the rear left bottom boss in the front-rear direction is d 4;

when the rear left mosaic body (451) is embedded into the rear left fixing groove (53), the rear left bottom boss is positioned at the bottom of the rear left sliding groove (535), and the rear left top boss is embedded into the top of the rear left sliding groove (535);

the rear right fixing groove (54) comprises a rear right bottom plate, a rear right side plate vertically connected to the right side of the rear right bottom plate, a rear right left side plate vertically connected to the left side of the rear right bottom plate, and a rear right rear side plate vertically connected to the rear side of the rear right bottom plate; a vertical rear right sliding groove is formed in the left side face of the rear right side plate, the width of the top of the rear right sliding groove is d1, the width of the middle of the rear right sliding groove is d2, and the width of the bottom of the rear right sliding groove is d 3;

a rear right top boss is convexly arranged at the top of the right side surface of the rear right embedded body (452), and the top end of the rear right top boss is connected to the bottom surface of the rear right upright post (412); a rear right bottom boss is convexly arranged at the bottom of the right side surface of the rear right chimeric body (452); the rear right top boss has a width d1 in the front-rear direction; the rear right bottom boss is a short cylinder with a small angle cut off by the rear right cutting inclined plane and the diameter of the short cylinder d 5; the rear right bottom boss has a maximum width in a direction perpendicular to the rear right cutting bevel of d1, the rear right bottom boss has a maximum width in the front-rear direction of d 4;

when the rear right chimeric body (452) is embedded into the rear right fixing groove (54), the rear right bottom boss is positioned at the bottom of the rear right sliding groove, and the rear right top boss is embedded into the top of the rear right sliding groove;

a horizontal rear lower embedding strip (59) is connected between the rear left fixing groove (53) and the rear right fixing groove (54), and a rear upper embedding strip (49) is fixed at the bottom of the rear door leaf; the rear lower embedding protrusion is vertically arranged on the rear side of the top surface of the rear lower embedding strip (59) upwards, and the rear upper embedding recess is arranged on the rear side of the bottom surface of the rear upper embedding strip (49);

when the rear left mosaic body (451) is embedded in the rear left fixing groove (53) and the rear right mosaic body (452) is embedded in the rear right fixing groove (54), the rear lower mosaic protrusion is embedded in the rear upper mosaic recess;

the front door (1) comprises a front left upright post (111), a front right upright post (112) and a front door fan (133) positioned between the front left upright post (111) and the front right upright post (112);

the bottom of the front left upright post (111) is connected with a front left mosaic body (151), and the front left mosaic body (151) is embedded into the front left fixing groove (51);

the bottom of the front right upright post (112) is connected with a front right mosaic body (152), and the front right mosaic body (152) is embedded into the front right fixing groove (52);

the front left fixing groove (51) comprises a front left bottom plate (511), a front left side plate (514) vertically connected to the left side of the front left bottom plate (511), a front left side plate (512) vertically connected to the right side of the front left bottom plate (511), and a front left front side plate (513) vertically connected to the front side of the front left bottom plate (511); a vertical front left sliding groove (515) is formed in the right side surface of the front left side plate (514), the width of the top of the front left sliding groove (515) is d1, the width of the middle of the front left sliding groove (515) is d2, and the width of the bottom of the front left sliding groove (515) is d 3;

a front left top boss (1511) is convexly arranged at the top of the left side surface of the front left mosaic body (151), and the top end of the front left top boss (1511) is connected to the bottom surface of the front left upright post (111); a front left bottom boss (1512) is convexly arranged at the bottom of the left side surface of the front left chimeric body (151); the front left top boss (1511) has a width d1 in the front-to-rear direction; the front left bottom boss (1512) is a short cylinder with a small angle cut off by the front left cutting bevel and a diameter d 5; the front left bottom boss (1512) has a maximum width in a direction perpendicular to the front left cut bevel of d1, and the front left bottom boss (1512) has a maximum width in a front-to-back direction of d 4;

when the front left mosaic body (151) is embedded into the front left fixing groove (51), the front left bottom boss (1512) is positioned at the bottom of the front left sliding groove (515), and the front left top boss (1511) is embedded into the top of the front left sliding groove (515);

the front right fixing groove (52) comprises a front right bottom plate, a front right side plate vertically connected to the right side of the front right bottom plate, a front right left side plate vertically connected to the left side of the front right bottom plate, and a front right front side plate vertically connected to the front side of the front right bottom plate; a vertical front right sliding groove is formed in the left side face of the front right side plate, the width of the top of the front right sliding groove is d1, the width of the middle of the front right sliding groove is d2, and the width of the bottom of the front right sliding groove is d 3;

a front right top boss (1521) is convexly arranged at the top of the right side surface of the front right chimeric body (152), and the top end of the front right top boss (1521) is connected to the bottom surface of the front right upright post (112); a front right bottom boss (1522) is convexly arranged at the bottom of the right side surface of the front right chimeric body (152); the front right top boss (1521) has a width d1 in the front-rear direction; the front right bottom boss (1522) is a short cylinder with a small angle cut off by the front right cutting inclined plane and the diameter d 5; the front right bottom boss (1522) has a maximum width d1 in a direction perpendicular to the front right cut slope, the front right bottom boss (1522) has a maximum width d4 in the front-rear direction;

when the front right mosaic body (152) is embedded into the front right fixing groove (52), the front right bottom boss (1522) is positioned at the bottom of the front right chute, and the front right top boss (1521) is embedded into the top of the front right chute;

a horizontal front lower embedding strip (58) is connected between the front left fixing groove (51) and the front right fixing groove (52), and a front upper embedding strip (19) is connected between the bottom end of the front left upright post (111) and the bottom end of the front right upright post (112); the front side of the top surface of the front lower embedding strip (58) is vertically upwards provided with a front lower embedding bulge, and the front side of the bottom surface of the front upper embedding strip (19) is provided with a front upper embedding recess;

when the front left mosaic body (151) is embedded in the front left fixing groove (51) and the front right mosaic body (152) is embedded in the front right fixing groove (52), the front lower mosaic protrusion is embedded in the front upper mosaic recess;

the left door (2) comprises a left door leaf (231), a first left connecting sleeve (28) is arranged at the bottom end of the left door leaf (231), a second left connecting sleeve (55) is arranged at the left side edge of the chassis (5), and the first left connecting sleeve (28) is axially communicated with the second left connecting sleeve (55) and then hinged through a left pin shaft;

the left door leaf (231) is connected with the front left upright post (111) and the rear left upright post (411) through a lockset;

the right door (3) comprises a right door leaf, a first right connecting sleeve is arranged at the bottom end of the right door leaf, a second right connecting sleeve is arranged at the edge of the right side of the chassis (5), and the first right connecting sleeve is axially communicated with the second right connecting sleeve and then hinged through a right pin shaft;

the right door leaf is connected with the front right upright post (112) and the rear right upright post (412) through a lockset;

a stacking positioning block (6) is further fixed on the bottom plate (5) below each fixing groove; a second stacking groove (62) is formed in the bottom surface of each stacking positioning block (6), and a stacking protruding block (63) is arranged at each second stacking groove (62); the top of each fixing groove is also provided with a fixing groove stacking projection (64) which is vertically aligned with the second stacking groove (62).