CN113830393A

CN113830393A - pallet box

Info

Publication number: CN113830393A
Application number: CN202111068869.6A
Authority: CN
Inventors: 倪建生; 苏继军; 孙士国; 鲁亮; 王文博; 李波; 高佑诚
Original assignee: Dalian CIMC Special Logistics Equipment Co Ltd
Current assignee: Dalian CIMC Logistics Equipment Co Ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-12-24

Abstract

The invention discloses a pallet box. The pallet box includes a chassis, two side walls and two end walls; the chassis column of the chassis includes a side wall pivoting outer wall and a side wall pivoting inner wall; the connecting end of the side wall has a side wall pivot shaft; the connecting end of the end wall pivots Connected to the end of the chassis; the part of the sidewall pivoting inner wall constitutes a sidewall notch blocking wall, the sidewall pivoting outer wall, the sidewall pivoting inner wall, and the sidewall notch blocking wall constitute a sidewall pivoting groove, the sidewall pivoting There is an interval between the upper end of the outer wall and the side wall notch blocking wall to form a side wall installation notch that communicates with the upper end of the side wall pivot slot, and the free end of the side wall pivot shaft enters the side wall pivot slot through the side wall installation notch , so that the side wall is pivotally connected to the chassis, with the side wall mounting notch facing the outside of the chassis. Thereby, the side wall can be attached to the chassis from the outer side of the chassis away from the center thereof, and furthermore, the strength of the chassis where the side wall mounting notch is provided is large.

Description

Tray box

Technical Field

The invention relates to the field of containers, in particular to a pallet box.

Background

Existing pallet cases include a base, end walls, and side walls. Wherein the end wall has a locking aperture. The side wall has a latch hook. With the tray box in the erected condition, portions of the latch hooks can enter the latch holes to lock the end walls to the side walls.

The chassis upright post of the chassis is provided with a side wall pivoting groove extending along the height direction of the chassis. The lower end of the side wall is provided with a pivot shaft. The pivoting shaft is rotatably arranged in the side wall pivoting groove so as to enable the side wall to be pivotally connected to the chassis. The chassis upright also has a mounting opening communicating with the side wall pivot slot. The mounting opening faces the outside of the chassis and is located near the bottom end of the side wall pivot slot for receiving the pivot shaft from the outside of the chassis into the side wall pivot slot. Therefore, the strength of the installation opening part arranged on the chassis upright post is low. In addition, the side wall is not positioned during installation, and is not easy to install.

To this end, the present invention provides a pallet box to at least partially solve the above problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description section. This summary of the invention 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.

To at least partially solve the above technical problem, the present invention provides a tray box including:

the chassis comprises a chassis, wherein a chassis upright post is arranged at the corner of the chassis, and the chassis upright post comprises a side wall pivoting outer wall and a side wall pivoting inner wall which are spaced along a second horizontal direction perpendicular to the first horizontal direction;

the connecting end of the side wall is provided with a side wall pivot shaft extending along a first horizontal direction and used for being pivotally connected to the side part of the chassis;

two end walls, the connecting ends of the end walls being pivotally connected to the ends of the chassis;

the part of the side wall pivot inner wall extends along the second horizontal direction to form a side wall notch blocking wall, the side wall notch blocking wall is positioned above the side wall pivot outer wall along the height direction of the chassis, the side wall pivot outer wall, the side wall pivot inner wall and the side wall notch blocking wall form a side wall pivot groove, a space is reserved between the upper end of the side wall pivot outer wall and the side wall notch blocking wall to form a side wall installation notch communicated with the upper end of the side wall pivot groove, the free end of the side wall pivot shaft enters the side wall pivot groove through the side wall installation notch, so that the side wall is in pivot connection with the chassis, and the side wall installation notch faces the outer side of the chassis.

According to the pallet box of the present invention, the side wall mounting notch communicates to the upper end of the side wall pivot groove, the side wall mounting notch faces the outside of the chassis, so that the side wall can be mounted to the chassis from the outside of the chassis far from the center thereof, and further the chassis is strong where the side wall mounting notch is provided.

Optionally, the side wall pivot axis is a quadrangular prism, any outer surface of the side wall pivot axis is inclined to the thickness direction of the side wall, the side wall pivot axis has an outer end side surface and an inner end side surface, the outer end side surface and the inner end side surface are arranged at intervals along the thickness direction of the side wall, the outer end side surface is positioned on one side of the inner end side surface, which is far away from the inner side of the side wall,

in the thickness direction of the side wall, an end of the outer-end side face close to the free end of the side wall is closer to the inner side of the side wall than an end thereof away from the free end of the side wall.

Optionally, the side wall pivot axis has an outer end surface and an inner end surface, the outer end surface being closer to the free end of the side wall than to its inner end surface,

the outer end surface of the pivoting axis of the side wall has a smaller dimension than the inner end surface in the thickness direction of the side wall, and/or

A first angle between the outer end side and the side box inner face of the side wall ranges in size from 16 ° to 18 °.

Optionally, the connecting end of the side wall is provided with a lower corner piece, the lower end of the lower corner piece is provided with a connecting portion, a portion of the connecting portion, which is far away from the free end of the side wall, extends along a first horizontal direction to form a side wall pivot shaft, the connecting portion is provided with an outer inclined surface and an inner inclined surface, the outer inclined surface and the inner inclined surface are both inclined to the thickness direction of the side wall, the portion of the outer inclined surface, which is far away from the free end of the side wall, and the portion of the inner inclined surface, which is far away from the free end of the side wall, are close to each other and connected to the side wall pivot shaft.

Optionally, the maximum dimension of the side wall pivot axis is larger than the minimum dimension of the side wall mounting notch along the second horizontal direction under the condition that the tray box is in the assembled state, and/or

Under the condition that the tray box is in a folded state, along the second horizontal direction, the maximum size of the side wall pivot shaft is larger than the minimum size of the side wall mounting notch.

Optionally, a portion of the sidewall pivoting inner wall extends in a first horizontal direction to form a sidewall receiving slot inner wall, the sidewall pivoting outer wall extends in the first horizontal direction to form a sidewall receiving slot outer wall, the sidewall has an inclined position that is inclined outwardly from the horizontal direction, with the sidewall in the inclined position, the sidewall pivoting axis abuts an outer surface of the sidewall receiving slot inner wall, the outer inclined surface abuts the sidewall receiving slot outer wall,

in the case of the side wall in the inclined position, the maximum dimension of the pivot axis of the side wall is smaller than the minimum dimension of the mounting recess of the side wall in the second horizontal direction, and/or

The angle of the second angle between the side wall and the height direction of the chassis in the case of an inclined position of the side wall is in the range of 14 ° to 16 °, and/or

Under the condition that the side wall is positioned at the inclined position, a second included angle between the side wall and the chassis in the height direction is smaller than or equal to the first included angle.

Optionally, the height of the two side wall pivot slots is the same or different along the height of the chassis.

Optionally, at least one of the two side wall pivot slots is provided with a side wall mounting notch, the tray box further comprising a side wall tamper stop, the side wall tamper stop being detachably connected to the chassis upright and located at the side wall mounting notch.

Optionally, the connecting end of the side wall is provided with a lower corner piece having a removal guide surface inclined to the first horizontal direction for guiding the lower corner piece to move in the first horizontal direction so as to leave the side wall pivot shaft from the side wall pivot groove.

Optionally, the chassis column has a first set of vertical guides, the connecting end of the side wall is provided with a lower corner fitting, the lower corner fitting has a second set of vertical guides, and the first set of vertical guides and the second set of vertical guides are attached to guide the movement of the lower corner fitting in the process that the side wall moves from the position folded on the chassis to the position perpendicular to the chassis.

Optionally, the chassis stand column has a stacking column, the lower corner fitting has a side wall limiting hole, the tray box is located under the condition of the assembled state, the stacking column is located in the side wall limiting hole, the stacking column has a part of first assembled guide portion, and the side wall limiting hole has a second assembled guide portion.

Optionally, the second set of upright guides includes a first guide surface and a second guide surface, the first set of upright guides includes a third guide surface and a fourth guide surface, the first guide surface, the second guide surface, and the third guide surface are each inclined to the second horizontal direction, the fourth guide surface is an arc-shaped guide surface extending in the second horizontal direction, the first guide surface and the third guide surface are attached to each other, and the second guide surface and the arc-shaped guide surface are attached to each other to guide the movement of the lower corner fitting during the movement of the side wall from the position folded on the chassis to the position perpendicular to the chassis.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.

FIG. 1 is a perspective view of one orientation of a pallet box according to a preferred embodiment of the present invention, wherein the pallet box is in an erected condition;

FIG. 2 is an enlarged view of a portion of FIG. 1 at C;

FIG. 3 is an enlarged partial schematic view of the interior of the tray box of FIG. 1;

FIG. 4 is a perspective view of the tray box of FIG. 1 in another orientation, wherein the tray box is in an assembled state;

FIG. 5 is an enlarged view of a portion of FIG. 4 at D;

FIG. 6 is a perspective view of one orientation of the pallet box of FIG. 1, with the pallet box in a collapsed condition;

FIG. 7 is an enlarged view of a portion of FIG. 6 at F;

FIG. 8 is a perspective view of one orientation of the chassis of the pallet box of FIG. 1;

FIG. 9 is an enlarged view of a portion of FIG. 8 at G;

FIG. 10 is an enlarged partial schematic view of FIG. 8;

FIG. 11 is a perspective view of one orientation of a second side wall of the tray box of FIG. 1;

FIG. 12 is an enlarged view of a portion of FIG. 11 at I;

FIG. 13 is an enlarged partial schematic view at the lower corner piece of FIG. 11;

FIG. 14 is a perspective view of one orientation of a first side wall of the tray box of FIG. 1;

FIG. 15 is an enlarged view of a portion of FIG. 14 at J;

FIG. 16 is an enlarged partial schematic view at the lower corner piece of FIG. 14;

FIG. 17 is a partial schematic view of a side view of a second side wall of the tray box of FIG. 1, with the second side wall in an upright position;

FIG. 18 is a partial schematic view of a side view of the tray box of FIG. 1 at the junction of the bottom tray and the second side wall;

FIG. 19 is a partial schematic view of a side view of a first side wall of the tray box of FIG. 1, with the first side wall in an upright position;

FIG. 20 is a partial schematic view of a side view of the tray box of FIG. 1 at the connection of the chassis and the first side wall;

FIG. 21 is a partial schematic view of the junction of the bottom tray and the first side wall of the tray box of FIG. 1 with the first side wall in a folded position;

FIG. 22 is a partial schematic view of the junction of the bottom tray and the first side wall of the tray case of FIG. 1, wherein the first side wall is in a position between a collapsed position and an upright position;

FIG. 23 is a partial schematic view of a junction of a bottom tray and a first side wall of the tray case of FIG. 1, wherein the first side wall is in another position between a collapsed position and an upright position;

FIG. 24 is a partial schematic view of the junction of the chassis and the first side wall of the tray box of FIG. 1 with the first side wall in an upright position;

FIG. 25 is a partial schematic view of the junction of the chassis and the first side wall of the tray box of FIG. 1 with the first side wall in a tilted upright position;

FIG. 26 is a partial schematic view of the junction of the chassis and the first side wall of the tray box of FIG. 1, wherein the first side wall is in a position prior to the side wall pivot axis moving out of the side wall pivot slot;

FIG. 27 is a partial schematic view of the junction of the chassis and the first side wall of the tray box of FIG. 1, with the first side wall in another position prior to the side wall pivot axis moving out of the side wall pivot slot;

FIG. 28 is a partial schematic view of the junction of the chassis and the first side wall of the tray box of FIG. 1 with the first side wall positioned with the side wall pivot axis moved out of the side wall pivot slot;

FIG. 29 is a partial schematic view of the junction of the base pan and a first side wall of the tray box of FIG. 1, wherein the first side wall is perpendicular to the base pan; and

FIG. 30 is a partial schematic view of the junction of the bottom tray and the first side wall of the tray box of FIG. 1, wherein the first side wall is folded over the bottom tray.

Description of the reference numerals

100: the chassis 110: bottom end beam

120: chassis column 121: end wall pivot outer wall

130: side wall pivot outer wall 131: side wall pivoting inner wall

132: side wall pivot groove 133: side wall mounting notch

135: sidewall notch dam 136: outer wall of side wall accommodating groove

137: sidewall receiving groove inner wall 138: side wall accommodating groove side part

140: stacking column 141: third guide surface

142: fourth guide surface 150: bottom side beam

151: bottom side beam cross arm 152: bottom side beam vertical wall

153: first bottom side beam vertical wall 154: second bottom side beam vertical wall

156: second through hole 157: side wall lower beam gap

158: side wall accommodating groove 200: end wall

202: end box inner face 203: outside the end box

300: side wall 301: inner surface of side box

302: side box outer face 310: first side wall

320: second side wall 350: side column

352: lower corner piece 353: side edge

354: corner piece flange 356: side wall pivot shaft

357: connecting portion 358: outer inclined plane

359: inner inclined plane 360: side wall upper beam

361: first face 362: second surface

363: third surface 364: fourth surface

365: first corner 366: second angle

367: third angle 368: the fourth corner

397: corner piece flange notch 410: detachment guide surface

411: first abutting point 412: second contact point

413: sidewall spacer holes 414: first guide surface

415: second guide surface 416: outer side wall of limiting hole

417: end wall sheathing panel 420: side wall anti-disassembly stopper

421: side wall sheathing 422: outer end wall of limiting hole

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", and the like are used herein for purposes of illustration only and are not to be construed as limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, e.g., a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

The present embodiment provides a pallet box. Referring to fig. 1 to 30, the tray box includes a bottom plate 100, an end wall 200, and a side wall 300. The chassis 100, end walls 200, and side walls 300 may form a generally square structure for transporting cargo. For example, for transporting goods such as rubber having elasticity. The end wall 200 is pivotally connected to an end of the chassis 100. The side walls 300 are pivotally connected to the sides of the chassis 100. The tray box has an assembled state and a folded state. With the tray box in the erected condition, the chassis 100 is perpendicular to the end walls 200. The bottom plate 100 is perpendicular to the side wall 300. The end wall 200 is perpendicular to the side wall 300.

As shown in fig. 1, 4, 6 and 8, the chassis 100 has a substantially square structure. The chassis 100 may be paved with a floor for placing cargo. The four corners of the chassis 100 are each provided with a chassis pillar 120. End wall 200 and side wall 300 hereafter may be connected to chassis pillar 120.

Referring to fig. 8 to 10, the chassis 100 further includes a bottom end beam 110 and a bottom side beam 150. The bottom side members 150 extend in the first horizontal direction X. One side portion of the chassis 100 is provided with one bottom side member 150, and the other side portion of the chassis 100 is provided with the other bottom side member 150, in the second horizontal direction Y. The second horizontal direction Y is perpendicular to the first horizontal direction X. The bottom end beam 110 extends in a second horizontal direction Y. Along the first horizontal direction X, one end of the chassis 100 is provided with one bottom end beam 110, and the other end of the chassis 100 is provided with the other bottom end beam 110.

Preferably, the cross section of the bottom side member 150 (the cross section is perpendicular to the first horizontal direction X) is configured in an L-shaped structure. The L-shaped structure includes a bottom side rail cross arm 151 and a bottom side rail vertical wall 152. The bottom side rail cross-arm 151 is connected to the bottom side rail vertical wall 152. The bottom side beam cross arm 151 is perpendicular to the height direction Z of the chassis 100. The floor may be lapped to the upper surface of the bottom side rail cross arm 151. Bottom side rail vertical walls 152 are located above bottom side rail cross arms 151. Along the second horizontal direction Y, the bottom side rail vertical wall 152 is located on the side of the bottom side rail lateral arm 151 away from the center of the chassis 100.

The bottom side sill vertical wall 152 may be configured as a stepped structure. Thus, the bottom side rail vertical wall 152 includes a first bottom side rail vertical wall 153 and a second bottom side rail vertical wall 154. The first and second bottom side beam

vertical walls

153 and 154 are perpendicular to the second horizontal direction Y. The first bottom side sill vertical wall 153 is located above the second bottom side sill vertical wall 154 in the height direction Z of the chassis 100. The first bottom side sill vertical wall 153 is located on the side of the second bottom side sill vertical wall 154 away from the center of the chassis 100 in the second horizontal direction Y. The first and second bottom side sill

vertical walls

153 and 154 are connected by a transition wall. The lower end of the second bottom side rail vertical wall 154 is connected to the bottom side rail cross arm 151. Thereby, the strength of the bottom side member 150 can be increased.

With the pallet box in the erected condition, the surface of the second bottom side rail upright wall 154 near the center of the chassis 100 is the inner surface of the second bottom side rail upright wall 154. The surface of the later-described side wall underbeam (located at the connecting end of the side wall 300, that is, the lower end of the side wall 300 in fig. 1) near the center of the chassis is the inner surface of the side wall underbeam. The inner surface of the second bottom side rail vertical wall 154 may be located on one side of the inner surface of the side wall lower rail near the center of the chassis 100. Thus, the second bottom side rail vertical wall 154 may be positioned for folding over the end wall 200 of the chassis 100. The side wall lower beam may be located above the second bottom side beam vertical wall 154.

In an embodiment not shown, the inner surface of the second bottom side rail vertical wall may be substantially flush with the inner surface of the side wall lower rail.

The first bottom side sill vertical wall 153 may be used to block the later side sill to bulge the side sill in bending in the second horizontal direction Y in case of transporting the elastic cargo through the pallet box. Further, since the thickness dimension of the first bottom side rail vertical wall 153 is small, the in-box space occupied by the bottom side rail 150 can be reduced as much as possible, thereby increasing the in-box space of the tray box in the erected state as much as possible.

As shown in fig. 1, the end wall 200 has an end wall shroud 417 attached to the frame of the end wall 200. The end wall shroud 417 has an end box inner face 202 and an end box outer face 203. The end bin inner face 202 is adjacent the inside of the pallet bin. The end bin outer faces 203 are remote from the inner sides of the tray bins.

Referring to fig. 9, and 18-30, portions of the chassis upright 120 extend in the first horizontal direction X toward the center of the chassis 100 to form a sidewall pivot outer wall 130 and a sidewall pivot inner wall 131. The side wall pivot outer wall 130 and the side wall pivot inner wall 131 are both perpendicular to the second horizontal direction Y. In the second horizontal direction Y, there is a space between the side wall pivot outer wall 130 and the side wall pivot inner wall 131, the side wall pivot outer wall 130 is located on a side of the side wall pivot inner wall 131 away from the center of the chassis 100, and the side wall pivot outer wall 130 is located at an end of the chassis 100. The portion of the sidewall pivot inner wall 131 is higher than the sidewall pivot outer wall 130. In the second horizontal direction Y, the side wall pivot inner wall 131 partially extends and protrudes away from the center of the chassis 100 to form a side wall notch wall 135. The side wall notch wall 135 is located above the side wall pivot outer wall 130 in the height direction Z of the chassis 100. A space exists between the sidewall notch wall 135 and the upper end of the sidewall pivot outer wall 130. Thus, the side wall pivot outer wall 130, the side wall pivot inner wall 131, and the side wall notch wall 135 form the side wall pivot slot 132. In the first horizontal direction X, the side wall pivot opening of the side wall pivot slot 132 faces the other chassis upright 120. The space between the sidewall notch wall 135 and the upper end of the sidewall pivot outer wall 130 forms the sidewall mounting notch 133.

The portion of the sidewall pivot inner wall 131 located at the lower side of the sidewall notch dam 135 extends toward the center of the bottom chassis 100 in the first horizontal direction X to form a sidewall-receiving groove inner wall 137. In the first horizontal direction X, the side wall pivot outer wall 130 extends toward the center of the chassis 100 to form a side wall receiving groove outer wall 136. The size of the side wall receiving groove inner wall 137 is smaller than that of the side wall pivot inner wall 131 in the height direction of the chassis 100. The end of the side wall-receiving groove outer wall 136 near the center of the chassis 100 in the first horizontal direction X is a side wall-bent end. The sidewall bent end portion extends toward the center of the chassis 100 to the sidewall-receiving groove inner wall 137 in the second horizontal direction Y to constitute a sidewall-receiving groove side portion 138. Thus, the side wall receiving groove outer wall 136, the side wall receiving groove inner wall 137, and the side wall receiving groove side portion 138 constitute a side wall receiving groove 158. The opening of the sidewall receiving groove 158 faces upward.

As shown in fig. 3 and 9, chassis upright 120 further includes a second through hole 156. The second through hole 156 communicates with the sidewall mounting notch 133. The second through hole 156 is located at the sidewall mounting notch 133 in the height direction Z of the chassis 100. As shown in fig. 3, the tray box also includes a sidewall tamper stop 420. The sidewall anti-removal stop 420 may be disposed through the second through hole 156 to extend to the sidewall mounting notch 133, thereby blocking the sidewall pivot 356 from exiting the sidewall pivot slot 132 through the sidewall mounting notch 133. Preferably, the second through hole 156 is located at the sidewall notch dam 135. Preferably, the sidewall tamper evidence 420 may be a pin.

The attachment locations of the first sidewall 310 and the chassis 100 are each provided with a second through-hole 156 and a sidewall anti-tamper 420 so that the first sidewall 310 cannot be removed from the chassis 100. The attachment locations of the second sidewall 320 and the chassis 100 may be provided without the second through-hole 156 and the sidewall anti-tamper 420 to allow the second sidewall 320 to be removed from the chassis 100. When the side wall tamper evidence 420 is removed, both side walls 300 can be removed from the chassis 100.

In an embodiment not shown, second through holes and side wall anti-disassembly stoppers are provided at each of the four chassis uprights, so that neither side wall can be disassembled out of the chassis. Or the four chassis upright posts are not provided with the second through holes and the side wall anti-disassembly stoppers so that the two side walls can be disassembled from the chassis.

In the present embodiment, the chassis upright posts 120 at both ends of the chassis 100 are provided with the side wall attachment notches 133 along the first horizontal direction X. In another embodiment, not shown, the chassis pillar at either end of the chassis may be provided with a sidewall mounting notch, and the chassis pillar at the other end of the chassis may not be provided with a sidewall mounting notch, along the first horizontal direction X. Or two pairs of chassis upright columns which are positioned at two pairs of opposite angles of the chassis, wherein one pair of chassis upright columns is provided with a side wall mounting notch, and the other pair of chassis upright columns is not provided with a side wall mounting notch.

Referring to fig. 11-16, the sidewall 300 includes a sidewall lower beam, a sidewall upright 350, and a sidewall upper beam 360. The side pillars 350 are located at ends of the side walls 300 in the first horizontal direction X. The sidewall lower beam is located at the connection end of the sidewall 300 (the lower end of the sidewall 300 in fig. 1). The sidewall upper beam 360 is located at a free end of the sidewall 300 opposite to the connected end thereof (i.e., the upper end of the sidewall 300 in fig. 1). Thus, the sidewall lower beams, the side pillars 350, and the sidewall upper beams 360 constitute a frame of the sidewall 300.

As shown in fig. 1, the sidewall 300 has a sidewall sheathing panel 421 attached to the frame of the sidewall 300. The side wall sheathing panel 421 has a side case inner face 301 and a side case outer face 302. The side bin inner faces 301 are adjacent the inner side of the tray bin. The side bin outer faces 302 are remote from the inner sides of the tray bins.

As shown in fig. 1 to 7, and 11 to 16, the sidewall 300 includes a first sidewall 310 and a second sidewall 320. With the tray case in the erected condition, if it is desired to have the tray case in the folded condition, it is possible to fold either one of the two end walls 200, then fold the other one of the two end walls 200, then fold the first side wall 310, and finally fold the second side wall 320. In this way, in the folded state of the tray box, the end wall 200 is located below the side wall 300 and the first side wall 310 is located below the second side wall 320 in the height direction Z of the chassis 100.

As shown in fig. 11 to 16, a lower corner piece 352 is provided below the side pillar 350. The lower corner piece 352 may be a casting. The lower corner piece 352 of the first sidewall 310 is a first lower corner piece. The lower corner piece 352 of the second sidewall 320 is a second lower corner piece. Preferably, the first lower corner piece has a size greater than that of the second lower corner piece in the extending direction of the side pillar 350.

Preferably, as shown in fig. 13 and 16, the side uprights 350 partially form side margins 353. In the first horizontal direction X, the lateral flange 353 is located at an end of the side pillar 350 away from the center of the side wall 300. The cross section of the side leg 353 (which is perpendicular to the direction of extension of the side pillar) is configured as an L-shaped structure. The L-shaped structure comprises a lateral wing edge inner wall and a lateral wing edge vertical wall. The inner wall of the side wing edge is connected with the vertical wall of the side wing edge. The inner side of the side flap wall near the inner side of the side wall 300 (the side of the side wall 300 near the center of the chassis 100 when the tray case is in an assembled state) is substantially flush with the side case outer face 302. The wing-side standing walls are perpendicular to the first horizontal direction X. The side wing edge standing wall is perpendicular to the side wing edge inner wall. The flanking riser walls are located on the side of the flanking inner walls away from the center of the side wall 300 in the first horizontal direction X. The side-wing standing wall is located on the inner side of the side-wing inner wall closer to the side wall 300 in the thickness direction of the side wall 300, and protrudes from the side box inner surface 301. Thus, the side edges 353 may increase the strength of the side uprights 350.

In a not shown embodiment, the side flanks can be constructed as sheet metal parts and then welded to the side uprights.

With the tray box in the collapsed position, the flanking upstanding walls of the first side wall 310 are located outside of the chassis 100. With the tray box in the collapsed position, the flanking upstanding walls of the second side wall 320 are located outwardly of the first side wall 310. Thus, in the case where the tray case is in the folded state, it is possible to avoid interference of the side edges 353 of the first side walls 310 with the end walls 200, and to avoid interference of the side edges 353 of the first side walls 310 with the chassis, and it is also possible to avoid interference of the side edges 353 of the second side walls 320 with the first side walls 310, so that the height dimension of the tray case in the folded state can be reduced as much as possible.

Preferably, the lower corner piece 352 includes a corner piece flange 354. The corner piece flanges 354 have corner piece flange standoffs. The corner member leg walls are substantially flush with the side leg walls. In the first horizontal direction X, the corner piece leg 354 is located at an end of the lower corner piece 352 remote from the center of the sidewall 300. The corner piece wing-edge standing wall protrudes to the side of the side box inner face 301 close to the inner side of the side wall 300 in the thickness direction of the side wall 300. With the pallet box in the collapsed position, the corner piece wing edge standing wall of the first side wall 310 is located outside the bottom end beam 110 of the chassis 100. Thus, in the case where the tray box is in the folded state, interference between the corner piece wing-side standing wall of the first side wall 310 and the end wall 200, and interference between the corner piece wing-side standing wall of the first side wall 310 and the chassis can be avoided, so that the height dimension of the tray box in the folded state can be reduced as much as possible.

When the tray box is in the assembled state, both the side-flap standing wall and the corner-flap standing wall are located outside the end wall 200 (when the tray box is in the assembled state, the side of the end wall 200 that is away from the center of the chassis 100). In this way, end wall 200 may be prevented from bulging outward.

Referring to fig. 11 to 17, 19, and 21 to 30, a connecting portion 357 is disposed at a lower end of the lower corner member 352. Coupling portion 357 includes an outer ramp 358 and an inner ramp 359. The outer slopes 358 and the inner slopes 359 are each inclined to the thickness direction of the side wall 300 (the left-right direction in fig. 17). The end of the outer ramp 358 remote from the free end of the side wall 300 (the lower end of the outer ramp 358 in fig. 17) and the end of the inner ramp 359 remote from the free end of the side wall 300 (the lower end of the inner ramp 359 in fig. 17) are adjacent one another. With the tray box in the erected condition, portions of the outer ramps 358 and portions of the inner ramps 359 are positioned within the sidewall receiving slots 158. A portion of a lower end of the connecting portion 357 extends in the first horizontal direction X to constitute the sidewall pivot shaft 356. The free ends of the sidewall pivot shafts 356 may be located within the sidewall pivot slots 132 previously described to pivotally connect the sidewalls 300 to the chassis 100.

The sidewall pivot 356 may be configured as a quadrangular prism structure. The sidewall pivot axis 356 has a cross-section (which is perpendicular to the first horizontal direction X) that is generally rectangular in configuration. Thus, the strength and surface area of the sidewall pivot shaft 356 may be increased as much as possible. The sidewall pivot 356 includes a first face 361 (an example of an outer end surface), a second face 362 (an example of an inner end side surface), a third face 363 (an example of an outer end side surface), and a fourth face 364 (an example of an inner end surface). The angle between the first face 361 and the second face 362 is a first angle 365 (an example of an inner end). The angle between second face 362 and fourth face 364 is a second angle 366. The angle between the first face 361 and the third face 363 is a third angle 367 (an example of an outer end). The angle between the third face 363 and the fourth face 364 is a fourth angle 368. The second face 362 and the third face 363 are spaced apart in the thickness direction of the side wall 300. The second face 362 is closer to the inner side of the side wall 300 than the third face 363 in the thickness direction of the side wall 300. Along the extending direction of the side pillar 350, the first surface 361 and the fourth surface 364 are disposed at an interval, and the first surface 361 is located on one side of the fourth surface 364 close to the free end of the side wall 300.

The first face 361, the second face 362, the third face 363, and the fourth face 364 are all inclined to the thickness direction of the sidewall 300. Thus, the sidewall pivot shaft 356 is inclined to the thickness direction of the sidewall 300. In the assembled state of the tray box, the first corner 365 is located on the side of the second corner 366 close to the center of the chassis 100, the third corner 367 is located on the side of the fourth corner 368 close to the center of the chassis 100 (the inner side of the side wall 300), and the third corner 367 is located on the side of the second corner 366 away from the center of the chassis 100 in the thickness direction of the side wall 300. The distance between the first corner 365 and the third corner 367 is smaller than the distance between the second corner 366 and the fourth corner 368 along the thickness direction of the sidewall 300.

Along the extension direction of the side pillar 350, the third corner 367 is located at the side of the first corner 365 near the free end of the side wall 300, the fourth corner 368 is located at the side of the second corner 366 near the free end of the side wall 300, and the first corner 365 is located at the side of the fourth corner 368 near the free end of the side wall 300.

Preferably, the first angle α 1 between the third face 363 and the side case inner face 301 ranges from 16 ° to 18 °. Further preferably, the first included angle α 1 is 17 °.

The side walls 300 are pivotally connected to the side wall pivot slots 132 of the chassis 100 by side wall pivot shafts 356. In this way, the side wall 300 may be moved between the folded position and the erected position. With the tray box in the erected state, the side wall 300 is in the upright position. With the tray box in the collapsed position, the side walls 300 are in the collapsed position. The side walls 300 in the folded position are folded to the chassis 100. The side walls 300 in the upright position are perpendicular to the chassis 100. The process of moving the side wall 300 between the folded position and the erected position is illustrated in fig. 21-24.

With the side wall 300 in the folded position, as shown in fig. 21, the second corner 366 abuts the inner surface of the side wall pivot outer wall 130 and the remainder of the side wall pivot 356 is clear of the side wall pivot outer wall 130 and the side wall pivot inner wall 131. During the rotation of the side wall 300 from the folded position to the erected position, the second corner 366 tapers away from the inner surface of the side wall pivot outer wall 130 and the first corner 365 tapers against the outer surface of the side wall pivot inner wall 131, as shown in fig. 22. As the second corner 366 clears the inner surface of the sidewall pivot outer wall 130, the first corner 365 abuts the outer surface of the sidewall pivot inner wall 131 as shown in fig. 23. With the side walls 300 rotated to the upright position, the fourth corner 368 abuts the inner surface of the side wall pivot outer wall 130, as shown in fig. 24.

With the side wall 300 in the folded position, as shown in fig. 30, the distance between the third corner 367 and the second corner 366 of the side wall 300 in the second horizontal direction Y (the maximum dimension of the side wall pivot shaft 356 in the second horizontal direction Y in the case where the tray case is in the folded state) is larger than the dimension of the side wall mounting notch 133. Thus, when the side wall 300 in the folded state is moved in the height direction of the chassis 100, the side wall pivot shaft 356 cannot move out of the side wall mounting notch 133 in the height direction Z of the chassis 100.

Except in the case where the side wall 300 is in the later tilted upright position, in other situations, such as during rotation of the side wall 300 between the folded position and the upright position, the side wall pivot shaft 356 cannot pass through the side wall mounting notch 133 and escape the side wall pivot slot 132.

When the side wall 300 is in the standing position, as shown in fig. 29, the distance between the first corner 365 and the fourth corner 368 of the side wall 300 in the second horizontal direction Y (the maximum dimension of the side wall pivot shaft 356 in the second horizontal direction Y when the tray case is in the erected state) is larger than the dimension of the side wall fitting notch 133. Thus, when the side wall 300 in the standing position is moved in the height direction of the chassis 100, the side wall pivot shaft 356 cannot move out of the side wall mounting notch 133 in the height direction Z of the chassis 100.

The side wall 300 may continue to be rotated outwardly to a predetermined angle in the upright position to be located in a diagonally outwardly inclined upright position, as shown in fig. 25. The side wall 300 may stop in the inclined position. At this time, a second angle α 2 between the sidewall 300 and the height direction Z of the chassis 100 is a predetermined angle. The α 2 is slightly smaller than the foregoing α 1. At this time, the distance between the first corner 365 and the third corner 367, and the distance between the second corner 366 and the fourth corner 368 in the second horizontal direction Y are smaller than the size of the side wall mounting notch 133. As shown in fig. 25-28, by drawing the side wall 300 outward in the direction of the slope of the side wall 300, the side wall pivot 356 may pass through the side wall mounting notch 133 and move out of the side wall pivot slot 132. Thus, the side wall 300 is detached from the chassis 100. The order of mounting the side wall 300 to the chassis 100 is opposite to the order of removing the side wall 300 from the chassis 100, and thus, a detailed description thereof will be omitted.

It should be noted that fig. 21 to 30 show the process of attaching and detaching the first side wall 310 to and from the chassis 100, and the relationship between the first side wall 310 in the folded position and the erected position. The process of attaching and detaching the second side wall 320 to and from the chassis 100, and the relationship between the folded position and the erected position of the second side wall 320 are substantially the same as those in fig. 21 to 30, and will not be described in detail.

In an embodiment not shown, α 2 ═ α 1.

Preferably, α 2 is in the range of 14 ° to 16 °. Further preferably, α 2 is 15 °.

As shown in fig. 16 and 25, the side wall 300 is in the inclined position. In the first horizontal direction X, a portion of the sidewall pivot shaft 356 is located at the connection portion 357, and a portion of the sidewall pivot shaft 356 protrudes from the connection portion 357. In this way, the portion of the second corner 366 that protrudes in the first horizontal direction X out of the connection 357 abuts against the outer surface of the sidewall pivot inner wall 131. The portion of the second corner 366 at the connection 357 in the first horizontal direction X abuts against the outer surface of the sidewall-receiving groove inner wall 137. The outer ramp 358 abuts the upper end of the sidewall-receiving pocket outer wall 136. The first corner 365 is spaced from the outer surface of the sidewall pivot inner wall 131. The lower end surface of the outer end wall of the later limiting hole abuts against the upper surface of the chassis pillar 120. In fig. 20-30, the shape and position of the side wall receiving groove outer wall 136 and the side wall pivot outer wall 130 are the same. The outer surface of the side wall pivot inner wall 131 and the outer surface of the side wall receiving groove inner wall 137 are flush, that is, the outer surface of the side wall pivot inner wall 131 and the outer surface of the side wall receiving groove inner wall 137 are the same in shape and position.

As shown in fig. 26, when the first corner 365 moves to the lower end of the sidewall notch wall 135, the third face 363 abuts the inner surface of the sidewall pivot outer wall 130. As shown in fig. 27, the sidewall pivot shaft 356 moves upward to clear the sidewall pivot slot 132. And then moved to the position shown in fig. 28 to clear the side wall pivot slot 132.

The surface of the sidewall notch dam 135 away from the center of the chassis 100 is perpendicular to the second horizontal direction Y. The top surface of the side wall pivot outer wall 130 is perpendicular to the height direction of the chassis 100. Thus, the surface of the sidewall notch wall 135 away from the center of the chassis 100 and the top surface of the sidewall pivot outer wall 130 may guide the movement of the sidewall pivot 356 during the process of installing the sidewall pivot 356 into the sidewall pivot slot 132.

Preferably, when the side wall 300 is in the inclined position, the outer inclined surface 358 abuts against the first abutting point 411 of the side wall receiving groove outer wall 136, and the distance between the second corner 366 and the second abutting point 412 of the side wall receiving groove inner wall 137 is a predetermined distance along the height direction of the chassis 100. The predetermined distance may be set as desired. Preferably, the predetermined distance is 8mm to 30 mm. Further preferably, the predetermined distance is 26 mm. Therefore, the stress of the sidewall 300 at the sidewall receiving groove 158 can be effectively improved, so as to enhance the strength of the sidewall receiving groove 158. It is understood that both the predetermined distance and the angular range of α 2 may be set as required, in the case where the strength of the side wall receiving groove can be ensured. The greater the predetermined distance, the better the sidewall is forced at the sidewall receiving slot.

Preferably, as shown in fig. 13, the lower corner piece 352 also includes a removal guide surface 410. In the first horizontal direction X, the detachment guide surface 410 is located at one end of the side wall pivot shaft 356 near the center of the side wall 300. The removal guide surface 410 is inclined to the first horizontal direction X. In the first horizontal direction X, an end of the removal guide surface 410 near the center of the side wall 300 is closer to the side wall upper beam 360 than an end thereof near the side wall pivot shaft 356.

It will be appreciated that, with reference to fig. 9 and 13, when the side walls 300 are removed, one of the side wall pivot shafts 356 is moved out of the side wall pivot slot 132 through the side wall mounting notch 133, and the other side wall pivot shaft 356 is snapped into the side wall mounting notch 133. The side wall 300 is now inclined to the first horizontal direction X, and the side wall 300 can be moved in the first horizontal direction X to move the side wall pivot 356 trapped at the side wall mounting notch 133 out of the side wall pivot opening of the side wall pivot slot 132. The removal guide surface 410 can now abut the side wall receiving slot side 138 to guide the movement of the side wall pivot shaft 356.

In this embodiment, the chassis uprights 120 connected to each side wall 300 are provided with side wall mounting notches 133. It will be appreciated that in embodiments not shown, one of the chassis uprights to which each side wall is attached may be provided with side wall mounting notches, the other being provided without side wall mounting notches. Thus, the side wall pivot shaft of the side wall can be detached through the opening of the side wall accommodating groove of the chassis upright post without the side wall mounting notch. The removal guide surface can now abut the side wall receiving groove side portion, thereby guiding the movement of the side wall pivot shaft.

Preferably, as shown in FIG. 15, the lower end of the corner piece flange 354 of the first sidewall 310 has a corner piece flange notch 397. The corner edge notch 397 may clear the chassis upright 120 when the first side wall 310 is moved from the upright position to the folded position, thereby preventing the corner edge 354 of the first side wall 310 from interfering with the chassis upright 120, as shown in fig. 7. When the first side wall 310 is disassembled, when one side wall pivot shaft 356 moves out of the side wall pivot groove 132 through the side wall mounting notch 133 and the other side wall pivot shaft 356 is clamped at the side wall mounting notch 133, it is necessary to move the first side wall 310 along the first horizontal direction X so that the side wall pivot shaft 356 clamped at the side wall mounting notch 133 moves out of the side wall pivot opening of the side wall pivot groove 132, the corner piece wing edge notch 397 may avoid the connecting end of the end wall 200, thereby avoiding the interference between the corner piece wing edge 354 and the end wall 200.

As shown in fig. 12, the corner piece leg notch 397 of the second sidewall 320 may also be chamfered. When the second side wall 320 is disassembled, when one side wall pivot shaft 356 moves out of the side wall pivot groove 132 through the side wall mounting notch 133 and the other side wall pivot shaft 356 is clamped at the side wall mounting notch 133, it is necessary to move the second side wall 320 along the first horizontal direction X, so that when the side wall pivot shaft 356 clamped at the side wall mounting notch 133 moves out of the side wall pivot opening of the side wall pivot groove 132, the corner piece wing edge notch 397 can avoid the connecting end of the end wall 200, thereby avoiding the interference between the corner piece wing edge 354 and the end wall 200.

As shown in fig. 13, 16, 20-30, the lower corner piece 352 further includes a sidewall retainer hole 413. When the sidewall 300 is connected to the chassis 100, the sidewall limiting hole 413 is located above the sidewall pivot 356 along the height direction of the chassis 100. Chassis column 120 also has stacking posts 140. The stacking columns 140 may be used to stack the pallet box in the collapsed position. The sidewall limiting hole 413 and the stacking column 140 are correspondingly arranged. When the pallet box is in the assembled state, the stacking posts 140 are located in the side wall limiting holes 413. Thereby, the coupling strength of the sidewall 300 and the bottom chassis 100 can be increased.

Preferably, referring to fig. 9, 10, 15, 16, 19, and 21-24, the chassis upright 120 has a first set of upright guides. The lower corner piece 352 includes a second set of upstanding guides. During the movement of the sidewall 300 from the folded position to the erected position, the second assembly guide contacts and moves along the first assembly guide to guide the movement of the lower corner piece 352, so that the stacking column 140 moves into the sidewall-limiting hole 413.

The sidewall retainer hole 413 has a retainer hole outer sidewall 416 and a retainer hole outer end wall 422. The second gang guide includes a first guide face 414, and a second guide face 415. The first guide surface 414 is located on the retainer hole outer side wall 416 and the second guide surface 415 is located on the retainer hole outer end wall 422. The first guide face 414 and the second guide face 415 are each inclined to the thickness direction of the side wall 300. The first upstanding guide portion includes a third guide face 141 and a fourth guide face 142. The third guide surface 141 is located on the stacking column 140. The fourth guide surface 142 is located at the end wall pivot outer wall 121 of the chassis upright 120. During the movement of the side wall 300 from the folded position to the erected position, the second guide surface 415 abuts and moves along the fourth guide surface 142, and the first guide surface 414 abuts and moves along the third guide surface 141 to guide the movement of the lower corner piece 352, so that the stacking column 140 moves into the side wall stopper hole 413, as shown in fig. 24.

Under the condition that the tray box is in the assembled state, the stacking column 140 can block the outer side wall 416 of the limiting hole, so that the side wall 300 is prevented from automatically rotating to the folding position under the condition of non-manual operation.

The fourth guide surface 142 is configured as an arc-shaped guide surface. The arc-shaped guide surface extends in the second horizontal direction Y.

Preferably, the second guide surface 415 is inclined at a larger angle relative to the first guide surface 414.

In an embodiment not shown, the angle of inclination of the second guide surface relative to the first guide surface may also be the same or different. The second guide surface may also be flush with the first guide surface.

During the movement of the side wall 300 from the folded position to the upright position, the second guide surface 415 abuts and moves along the fourth guide surface 142, as shown in fig. 22. After the second guide surface 415 is separated from the fourth guide surface 142, the lower end surface of the stopper-hole outer end wall 422 continues to abut against and moves along the fourth guide surface 142, thereby guiding the third guide surface 141 to abut against the first guide surface 414. The third guide surface 141 abuts and moves along the first guide surface 414 to guide the movement of the lower corner piece 352, thereby moving the stacking column 140 into the side wall stopper hole 413. This makes it possible to guide the movement of the lower corner fitting 352 more easily.

It will be appreciated that in embodiments not shown, the outer side wall of the stop hole is provided with a notch. The indentation may extend from a surface of the outer sidewall of the spacing hole away from the free end of the sidewall towards the free end of the sidewall. The size of the gap is larger than that of the stacking column along the first horizontal direction X. During the process that the side wall moves from the folding position to the standing position, the notch can abut against and move along the third guide surface to guide the movement of the lower corner piece, so that the stacking column moves into the side wall limiting hole.

The side wall pivot shaft 356 is movable in the height direction of the chassis 100 to move the side wall 300 in the height direction of the chassis 100. Thus, in the case where the side wall 300 in the upright position is required to be moved to the folded position, the side wall 300 is lifted upward so that the stacking column 140 is separated from the side wall stopper hole 413, and thus can be folded to the folded position.

The first sidewall 310 and the second sidewall 320 of this embodiment have a sequential folding order. The first sidewall 310 is folded and then the second sidewall 320 is folded. The sidewall pivot axis 356 of the first sidewall 310 is positioned lower than the sidewall pivot axis 356 of the second sidewall 320 in the height direction of the chassis 100. In the height direction of the chassis 100, the height dimension of the side wall pivot groove 132 connected with the first side wall 310 is smaller than the height dimension of the side wall pivot groove 132 connected with the second side wall 320. The side wall mounting notch 133 of the side wall pivot groove 132 connected to the first side wall 310 is positioned at a lower height than the side wall mounting notch 133 of the side wall pivot groove 132 connected to the second side wall 320 in the height direction of the bottom chassis 100. Accordingly, the stroke of the side wall 300 when the side wall 300 is detached can be shortened as much as possible, and the side wall 300 can be more conveniently detached.

In an embodiment not shown, the first and second side walls may not be folded one after the other. Either one of the first and second side walls may be folded first, and then the other one of the first and second side walls may be folded. At this time. The height dimension of the side wall pivot slot connected with the first side wall is approximately equal to the height dimension of the side wall pivot slot connected with the second side wall along the height direction of the chassis, so that the side wall pivot slot has enough height space for the side wall pivot shaft to move. The height of the position of the side wall mounting notch of the side wall pivot slot connected to the first side wall is approximately equal to the height of the position of the side wall mounting notch of the side wall pivot slot connected to the second side wall.

The dimension of the side wall pivot groove 132 in the second horizontal direction Y is larger than the dimension of the side wall pivot shaft 356. Thus, interference between the sidewall pivot 356 and the sidewall pivot slot 132 during rotation of the sidewall 300 is avoided.

Preferably, the inner surface of the side wall pivot outer wall 130 may be configured in a stepped shape. The stepped shape includes a first inner surface and a second inner surface. The first inner surface is located at an upper end of the second inner surface. The first inner surface is further away from the sidewall pivoting inner wall 131 relative to the second inner surface along the second horizontal direction Y. The first inner surface and the second inner surface transition through a transition bevel. Thus, the first and second inner surfaces may guide the movement of the sidewall pivot shaft 356 in the height direction of the chassis 100.

In the second horizontal direction Y, the smallest dimension between the first inner surface and the side wall pivot inner wall 131 is larger than the largest dimension of the side wall pivot shaft 356. In this way, the sidewall pivot shaft 356 can rotate at the level of the first inner surface as the sidewall 300 rotates between the upright position and the folded position.

As shown in fig. 24, when the pallet box is in the assembled state, the fourth corner 368 abuts against the second inner surface. At this time, the side wall 300 does not protrude from the outer surface of the side wall pivot outer wall 130.

Preferably, neither the side wall 300 nor the end wall 200 protrudes beyond the outer contour of the chassis 100 when the side wall 300 and the end wall 200 are connected to the chassis 100. Therefore, the transportation is convenient.

Preferably, the end wall 200 is located between the two side walls 300 in the second horizontal direction Y with the tray box in the erected state. The end wall 200 does not protrude from the side wall 300 in the first horizontal direction X to be located inside the side wall 300.

Preferably, as shown in fig. 9, 13, and 16, the end of the sidewall lower beam in the first horizontal direction X has a sidewall lower beam notch 157. With the pallet box in the erected condition, the side wall underbeam notch 157 is located at the side wall receiving channel side 138 of the chassis 100 to clear the side wall receiving channel side 138. Thereby, the overlapping area of the side wall underbeam and the floor side member 150 can be increased.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

Claims

1. A pallet box, characterized in that, the pallet box comprises:

a chassis, the corners of the chassis are provided with chassis uprights, the chassis uprights include a sidewall pivoting outer wall and a sidewall pivoting inner wall spaced along a second horizontal direction perpendicular to the first horizontal direction;

two side walls, the connecting ends of the side walls have side wall pivot shafts extending along the first horizontal direction for pivotally connecting to the sides of the chassis;

two end walls, the connecting ends of which are pivotally connected to the ends of the chassis;

A portion of the pivoting inner wall of the side wall extends along the second horizontal direction to form a side wall notch blocking wall, and along the height direction of the chassis, the side wall notch blocking wall is located above the side wall pivoting outer wall, The sidewall pivoting outer wall, the sidewall pivoting inner wall, and the sidewall notch blocking wall constitute a sidewall pivoting groove, the upper end of the sidewall pivoting outer wall, and the space between the sidewall notch blocking walls. There is a space between them to form a side wall installation notch that communicates with the upper end of the side wall pivot slot, and the free end of the side wall pivot shaft enters the side wall pivot slot through the side wall installation notch, so that the The sidewall is pivotally connected to the chassis, and the sidewall mounting notch faces the outside of the chassis.

2 . The pallet box according to claim 1 , wherein the side wall pivot shaft is a quadrangular prism, any one of the outer surfaces of the side wall pivot shaft is inclined to the thickness direction of the side wall, and the side wall The wall pivot shaft has an outer end side surface and an inner end side surface, the outer end side surface and the inner end side surface are spaced apart along the thickness direction of the side wall, and the outer end side surface is located in the thickness direction of the side wall. the side of the inner end side face away from the inner side of the side wall,

Along the thickness direction of the side wall, the end of the outer end side surface that is close to the free end of the side wall is closer to the inner side of the side wall than the end of the side wall that is far away from the free end of the side wall.

3. The pallet box of claim 2, wherein the side wall pivot shaft has an outer end surface and an inner end surface, the outer end surface being closer to the free end of the side wall relative to its inner end surface end,

The dimension of the outer end surface of the side wall pivot axis is smaller than the dimension of the inner end surface along the thickness direction of the side wall, and/or

The size of the first included angle between the outer end side surface and the side box inner surface of the side wall ranges from 16° to 18°.

4 . The pallet box according to claim 3 , wherein the connecting end of the side wall is provided with a lower corner piece, the lower end of the lower corner piece has a connecting portion, and the connecting portion is far away from the side wall. 5 . The part of the free end of the side wall extends along the first horizontal direction to constitute the side wall pivot axis, the connecting part has an outer slope and an inner slope, and the outer slope and the inner slope are both inclined to the thickness direction of the side wall. , the part of the outer slope away from the free end of the side wall and the part of the inner slope away from the free end of the side wall are close to each other and connected to the side wall pivot axis.

5. The pallet of claim 4, wherein

When the pallet box is in the assembled state, along the second horizontal direction, the maximum dimension of the side wall pivot shaft is greater than the minimum dimension of the side wall mounting notch, and/or

When the pallet box is in the folded state, along the second horizontal direction, the maximum dimension of the side wall pivot shaft is larger than the minimum dimension of the side wall mounting notch.

6 . The pallet box according to claim 4 , wherein a portion of the pivoting inner wall of the side wall extends along the first horizontal direction to form an inner wall of the side wall accommodating groove, and the pivoting outer wall of the side wall extends along the first horizontal direction. 7 . The first horizontal direction extends to form the outer wall of the side wall accommodating groove, the side wall has a slanting position inclined outward to the horizontal direction, and when the side wall is located in the slanting position, the side wall pivot shaft abuts the outer surface of the inner wall of the side wall accommodating groove, the outer inclined surface abuts the outer wall of the side wall accommodating groove,

When the side wall is in the inclined upright position, along the second horizontal direction, the maximum dimension of the side wall pivot axis is smaller than the minimum dimension of the side wall mounting notch, and/or

When the side wall is in the slanting position, the angle of the second included angle between the side wall and the height direction of the chassis ranges from 14° to 16°, and/or

When the side wall is in the slanting position, the second included angle between the side wall and the height direction of the chassis is less than or equal to the first included angle.

7 . The pallet box according to claim 1 , wherein, along the height direction of the chassis, the heights of the two side wall pivot slots are the same or different. 8 .

8 . The pallet box according to claim 1 , wherein at least one of the two side wall pivoting grooves is provided with the side wall installation notch, and the pallet box further comprises a side wall anti-removal block. 9 . , the side wall anti-removal block is detachably connected to the chassis upright, and is located at the side wall installation notch.

9 . The pallet box according to claim 1 , wherein the connecting end of the side wall is provided with a lower corner piece, and the lower corner piece has a disassembly guide surface, and the disassembly guide surface is inclined to the first The horizontal direction is used to guide the lower corner piece to move along the first horizontal direction, so that the side wall pivot shaft leaves the side wall pivot slot.

10 . The pallet box according to claim 1 , wherein the chassis column has a first set of guide parts, the connecting end of the side wall is provided with a lower corner piece, and the lower corner piece has a second set of guide parts. 11 . In the process of moving the side wall from the position folded on the chassis to the position perpendicular to the chassis, the first assembly guide part and the second assembly guide part are abutted, so as to The movement of the lower corner piece is guided.

11. The pallet box according to claim 10, characterized in that, the chassis upright column has a stacking column, the lower corner piece has a side wall limit hole, and when the pallet box is in an assembled state, the A portion of the stacking column is located in the side wall limiting hole, the stacking column has a part of the first set guide portion, and the side wall limiting hole has the second set guide portion.

12 . The pallet box of claim 10 , wherein the second assembled guide portion includes a first guide surface and a second guide surface, and the first assembled guide portion includes a third guide surface and a second guide surface. 13 . Four guide surfaces, the first guide surface, the second guide surface, and the third guide surface are all inclined to the second horizontal direction, and the fourth guide surface extends along the second horizontal direction In the process of moving the side wall from the position folded on the chassis to the position perpendicular to the chassis, the first guide surface and the third guide surface are abutted, the first guide surface The two guide surfaces fit with the arc guide surface to guide the movement of the lower corner piece.