Multi-layer plastic box

Abstract

The utility model belongs to the technical field of plastic boxes, and discloses a multi-layer plastic box which comprises a plurality of unit plastic boxes, a box cover and an assembly handle, and the plurality of unit plastic boxes are stacked from bottom to top. The multiple unit plastic boxes are stacked from bottom to top, then the box cover is connected with the open end of the unit plastic box on the uppermost layer in a covering mode, at the moment, the U-shaped assembly handle is arranged outside the multiple unit plastic boxes, the round hole in the lower end of the assembly handle is made to be connected with the metal piece with the notch on the anti-disengaging base in a hanging mode, then the two side faces of the assembly handle are pressed, and the plastic box is assembled. When the unit plastic boxes are assembled, the connecting pieces on the side faces of the unit plastic boxes are pressed to deform, the two hemispherical protrusions on the V-shaped clamping piece are combined and inserted into the square hole of the assembly handle, the V-shaped clamping piece and the square hole form a clamping structure after naturally stretching, and by the adoption of the installation structure, the assembly handle and the unit plastic boxes can form a multi-node clamping structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic box, especially to a multilayer plastic box. BACKGROUND

[0002] Plastic is a kind of material with ductility under certain temperature and pressure after adding various additives, which can fix its shape after cooling, and the plastic box is a transparent folding box, cylinder, top and bottom cover box, hand bag, hanging card and other related plastic products made of PVC / PET / PP / PS, which can achieve UV offset printing, silk printing, gold / silver stamping, sanding and other printing effects, with the characteristics of increasing user experience, durable packaging, moisture-proof, waterproof, high toughness, strong transportation safety, improving product grade and the like.

[0003] The existing technical problems of the plastic box are that (1) the existing layered plastic box is usually connected by integral injection molding buckles, and the structure of the plastic box has the problems of unfirm connection between the multilayer plastic boxes and inconvenience in carrying; (2) the existing layered plastic box usually does not have an article separation structure or uses a fixed grid plate as an article storage structure, which has the problems of disordered article storage and unadjustable storage space, which is not conducive to quick article searching and is difficult to adapt to the storage needs of different sizes of articles. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a multilayer plastic box.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a multilayer plastic box, comprising unit plastic boxes, a box cover and an assembled handle, the unit plastic boxes are provided in multiple, and the multiple unit plastic boxes are stacked from bottom to top, the side surface of the lowermost layer of unit plastic boxes is fixed with an anti-falling seat, and the open end cover of the uppermost layer of unit plastic boxes is installed with a box cover, the top surface of the box cover is integrally injection molded with a threaded column, and the upper side of the threaded column is provided with an assembled handle, the inner side of the assembled handle is provided with a trapezoidal inner support piece abutting against the box cover, and the inner side of the trapezoidal inner support piece is provided with a nut connected with the threaded column, the side surface of each unit plastic box is provided with a connecting piece, the connecting piece is integrally formed with a V-shaped clamping piece, and the two ends of the V-shaped clamping piece are provided with hemispherical protrusions, the surface of the assembled handle is provided with a square hole corresponding to the V-shaped clamping piece, and the lower end of the assembled handle is provided with a round hole corresponding to the anti-falling seat, the V-shaped clamping piece is connected with the square hole of the assembled handle, and the hemispherical protrusions of the V-shaped clamping piece and the square hole form a clamping structure.

[0006] Furthermore, a grid plate is movably arranged inside the unit plastic box, and the grid plate is composed of longitudinal stiffeners and transverse stiffeners. Two wavy telescopic parts are symmetrically arranged on the transverse stiffeners of the grid plate. A set of U-shaped positioning blocks are arranged in pairs on the inner wall of the unit plastic box. Limiting protrusions are provided at both ends of the transverse stiffeners of the grid plate, and the limiting protrusions are connected to the inner recesses of the U-shaped positioning blocks.

[0007] Furthermore, a rubber sealing ring is bonded to the inner side of the lid, and the rubber sealing ring is connected to the outer wall of the uppermost unit plastic box.

[0008] Furthermore, the bottom of the trapezoidal inner support of the assembly handle is provided with a through hole, and the through hole is connected to the threaded post. The assembly handle as a whole has an inverted U-shaped structure, and multiple square holes are provided at both ends of the assembly handle.

[0009] Furthermore, the anti-detachment seat is provided with a metal part with a notch, and the metal part is generally square in structure. The round hole of the assembly handle is connected to the metal part of the anti-detachment seat.

[0010] Furthermore, the nut is threaded to the upper end of the threaded column, and the nut abuts against the inner side of the trapezoidal inner support. The outer surface of the nut is provided with several anti-slip protrusions.

[0011] Furthermore, each of the aforementioned unit plastic boxes has an anti-misalignment protrusion integrally injection molded at the bottom, and the anti-misalignment protrusion of the upper unit plastic box extends to the inside of the opening of the lower unit plastic box.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. In this application, several unit plastic boxes are stacked from bottom to top, and then the box lid is covered with the open end of the top unit plastic box. At this time, by placing the U-shaped assembly handle outside the several unit plastic boxes, the round hole at the lower end of the assembly handle is made to hook with the notched metal part on the anti-detachment seat. Then, the two sides of the assembly handle are pressed, causing the connecting parts on the side of the unit plastic box to be deformed under pressure, so that the two hemispherical protrusions on the V-shaped clip merge and insert into the square hole of the assembly handle. After the V-shaped clip naturally extends, it forms a snap-fit ​​structure with the square hole. With this installation structure, the assembly handle can form a multi-node snap-fit ​​structure with several unit plastic boxes. Combined with the trapezoidal inner support, threaded column and nut, it not only increases the reliability of the connection between the multiple plastic boxes and the strength of the assembly handle, but also makes it easy to carry and significantly improves its practicality.

[0014] 2、In the application, the grid plate combined by longitudinal rib plate and transverse rib plate is arranged, by placing the grid plate in the unit plastic box, the ends of the several longitudinal rib plates on the grid plate are respectively inserted into the inside of the U-shaped positioning block arranged in pairs, so that the limiting convex on the longitudinal rib plate and the U-shaped positioning block form a limiting structure, since the both ends of the longitudinal rib plate of the grid plate are provided with the wave-shaped expansion and contraction part, by stretching or contracting the expansion and contraction part at the same time, and one expansion and contraction part is stretched and the other expansion and contraction part is contracted, the size of the square accommodating space formed in the grid plate is flexibly adjusted, the article searching is facilitated, and the accommodation of articles of different sizes is suitable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic diagram of the embodiment of the utility model;

[0016] Figure 2 is the top view of the unit plastic box;

[0017] Figure 3 is the three-dimensional view of the assembled handle;

[0018] Figure 4 is the three-dimensional view of the box cover.

[0019] In the drawing: 1, unit plastic box; 2, box cover; 3, assembled handle; 4, trapezoidal inner support; 5, threaded column; 6, nut; 7, anti-drop seat; 8, connecting piece; 9, square hole; 10, V-shaped clamping piece; 11, hemispherical convex; 12, grid plate; 13, expansion and contraction part; 14, U-shaped positioning block; 15, limiting convex; 16, round hole; 17, rubber sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application; obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments; based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0021] As Figures 1-4As shown, the embodiment of the present application discloses a multi-layer plastic box, which comprises unit plastic boxes 1, a box cover 2 and an assembled handle 3, the unit plastic boxes 1 are arranged in multiple, and the multiple unit plastic boxes 1 are arranged in a stack from bottom to top, the side surface of the lowermost unit plastic box 1 is fixed with an anti-falling seat 7, the open end cover of the uppermost unit plastic box 1 is provided with the box cover 2, the top surface of the box cover 2 is integrally injection molded with a threaded column 5, the upper side of the threaded column 5 is provided with the assembled handle 3, the inner side of the assembled handle 3 is provided with a trapezoidal inner supporting piece 4 which is abutted with the box cover 2, the inner side of the trapezoidal inner supporting piece 4 is provided with a nut 6 which is connected with the threaded column 5, the side surface of each unit plastic box 1 is provided with a connecting piece 8, the connecting piece 8 is integrally formed with a V-shaped clamping piece 10, the two ends of the V-shaped clamping piece 10 are provided with hemispherical protrusions 11, the surface of the assembled handle 3 is provided with square holes 9 corresponding to the V-shaped clamping piece 10, the lower end of the assembled handle 3 is provided with a circular hole 16 corresponding to the anti-falling seat 7, the V-shaped clamping piece 10 is connected with the square hole 9 of the assembled handle 3 in a penetrating mode, and a clamping structure is formed between the hemispherical protrusion 11 of the V-shaped clamping piece 10 and the square hole 9, wherein the trapezoidal inner supporting piece 4 is specifically an inverted isosceles trapezoidal structure.

[0022] A grid plate 12 is movably arranged in the unit plastic box 1, the grid plate 12 is combined by longitudinal rib plates and transverse rib plates, two wave-shaped structure elastic portions 13 are symmetrically arranged on the transverse rib plate of the grid plate 12, a group of U-shaped positioning blocks 14 are arranged on the inner wall surface of the unit plastic box 1 in pairs, limiting protrusions 15 are arranged at the two ends of the transverse rib plate of the grid plate 12, and the limiting protrusions 15 are connected with the inner side recesses of the U-shaped positioning blocks 14, by adopting the structure, the size of the square accommodating space formed in the grid plate 12 can be flexibly adjusted, the goods can be conveniently found, and the grid plate 12 is suitable for accommodating goods of different sizes, wherein the elastic portion 13 is combined by a plurality of mutually foldable plastic sheets.

[0023] A rubber sealing ring 17 is bonded to the inner side surface of the box cover 2, and the rubber sealing ring 17 is connected with the outer wall of the uppermost unit plastic box 1, by adopting the structure, the tightness of the connection between the box cover 2 and the uppermost unit plastic box 1 is increased.

[0024] A through hole is formed in the bottom of the trapezoidal inner supporting piece 4 of the assembled handle 3, and the through hole is connected with the threaded column 5, the assembled handle 3 has an inverted U-shaped structure as a whole, and a plurality of square holes 9 are formed at the two ends of the assembled handle 3, by adopting the structure, the connection between the trapezoidal inner supporting piece 4 and the box cover 2 is facilitated.

[0025] A metal piece with an opening is arranged on the anti-falling seat 7, and the metal piece has a square structure as a whole, the circular hole 16 of the assembled handle 3 is hung with the metal piece of the anti-falling seat 7, by adopting the structure, the reliability of the connection between the assembled handle 3 and the unit plastic boxes 1 is increased, and the separation of the unit plastic boxes 1 is prevented.

[0026] The screw cap 6 is screwed with the upper end of the threaded column 5, and the screw cap 6 abuts against the inner side of the trapezoidal inner supporting piece 4, and the outer surface of the screw cap 6 is provided with a plurality of anti-skid ribs, and the structure is easy to assemble the reinforcing of the handle 3, increase the overall structural strength, and is easy to carry by hand.

[0027] The bottom of each unit plastic box 1 is integrally injection molded with an anti-misplacement protrusion, and the anti-misplacement protrusion of the upper unit plastic box 1 extends to the inner side of the open end of the lower unit plastic box 1, and the structure increases the reliability of the connection of a plurality of unit plastic boxes 1 and is not prone to misplacement.

[0028] The use principle of the multi-layer plastic box in the embodiment is that: a plurality of unit plastic boxes 1 are stacked from bottom to top, and then the box cover 2 is connected with the open end of the uppermost unit plastic box 1, at this time, the U-shaped assembly handle 3 is arranged outside the plurality of unit plastic boxes 1, the circular hole 16 at the lower end of the assembly handle 3 is hung with the notched metal piece of the anti-falling seat 7, then the two side surfaces of the assembly handle 3 are pressed, the connecting piece 8 on the side surface of the unit plastic box 1 is deformed under pressure, the two hemispherical protrusions 11 on the V-shaped clamping piece 10 are combined and inserted into the square hole 9 of the assembly handle 3, and after the V-shaped clamping piece 10 is naturally stretched, the square hole 9 forms a clamping structure, so that the assembly handle 3 can form a multi-node clamping structure with the plurality of unit plastic boxes 1, and the trapezoidal inner supporting piece 4, the threaded column 5 and the screw cap 6 are arranged, which increases the connection reliability between the multi-layer plastic boxes and the strength of the assembly handle 3, and is easy to carry by hand, at the same time, the grid plate 12 is arranged in the unit plastic box 1, the two ends of the plurality of longitudinal rib plates on the grid plate 12 are respectively inserted into the inner side of the U-shaped positioning block 14 arranged in pairs in the unit plastic box 1, so that the limiting protrusion 15 on the longitudinal rib plate forms a limiting structure with the U-shaped positioning block 14, and since the two ends of the longitudinal rib plate of the grid plate 12 are provided with the wave-shaped expansion and contraction part 13, by simultaneously stretching or contracting the expansion and contraction part 13, and stretching one of the expansion and contraction parts 13 and contracting the other expansion and contraction part 13, the size of the square accommodating space formed in the grid plate 12 is flexibly adjusted, which is convenient for finding articles and suitable for storing articles of different sizes.

[0029] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not limited to the above-mentioned embodiments only, any technical scheme belonging to the utility model idea is within the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model are also regarded as the protection scope of the utility model.

Claims

1. A multi-layered plastic box comprising a unit plastic box (1), a box cover (2) and an assembled handle (3), characterized in that: The unit plastic box (1) is provided with a plurality of unit plastic boxes (1) stacked from bottom to top, the side of the lowermost layer of the unit plastic box (1) is fixed with an anti-disengagement seat (7), and the open end cover of the uppermost layer of the unit plastic box (1) is provided with a box cover (2), the top surface of the box cover (2) is integrally injection molded with a threaded column (5), and the upper end of the threaded column (5) is provided with an assembled handle (3), the inner side of the assembled handle (3) is provided with a trapezoidal inner support (4) abutting the box cover (2), and the inner side of the trapezoidal inner support (4) is provided with a nut (6) connected with the threaded column (5), the side of each unit plastic box (1) is provided with a connecting piece (8), and the connecting piece (8) is integrally formed with a V-shaped clamping piece (10), and the two ends of the V-shaped clamping piece (10) are provided with a hemispherical protrusion (11), the surface of the assembled handle (3) is provided with a square hole (9) corresponding to the V-shaped clamping piece (10), and the lower end of the assembled handle (3) is provided with a circular hole (16) corresponding to the anti-disengagement seat (7), the V-shaped clamping piece (10) is connected with the square hole (9) of the assembled handle (3), and the hemispherical protrusion (11) of the V-shaped clamping piece (10) and the square hole (9) form a clamping structure.

2. A multi-layered plastic box according to claim 1, characterized in that: The unit plastic box (1) is provided with a plurality of unit plastic boxes (1) stacked from bottom to top, the side of the lowermost layer of the unit plastic box (1) is fixed with an anti-disengagement seat (7), and the open end cover of the uppermost layer of the unit plastic box (1) is provided with a box cover (2), the top surface of the box cover (2) is integrally injection molded with a threaded column (5), and the upper end of the threaded column (5) is provided with an assembled handle (3), the inner side of the assembled handle (3) is provided with a trapezoidal inner support (4) abutting the box cover (2), and the inner side of the trapezoidal inner support (4) is provided with a nut (6) connected with the threaded column (5), the side of each unit plastic box (1) is provided with a connecting piece (8), and the connecting piece (8) is integrally formed with a V-shaped clamping piece (10), and the two ends of the V-shaped clamping piece (10) are provided with a hemispherical protrusion (11), the surface of the assembled handle (3) is provided with a square hole (9) corresponding to the V-shaped clamping piece (10), and the lower end of the assembled handle (3) is provided with a circular hole (16) corresponding to the anti-disengagement seat (7), the V-shaped clamping piece (10) is connected with the square hole (9) of the assembled handle (3), and the hemispherical protrusion (11) of the V-shaped clamping piece (10) and the square hole (9) form a clamping structure.

3. The multi-layered plastic box according to claim 1, wherein: The inner side of the box cover (2) is bonded with a rubber sealing ring (17), and the rubber sealing ring (17) is connected with the outer wall of the uppermost layer of the unit plastic box (1).

4. The multi-layered plastic box according to claim 1, wherein: The trapezoidal inner support (4) of the assembled handle (3) is provided with a through hole at the bottom, and the through hole is connected with the threaded column (5), the assembled handle (3) is integrally formed in an inverted U-shaped structure, and a plurality of square holes (9) are formed at the two ends of the assembled handle (3).

5. The multi-layered plastic box according to claim 1, wherein: The anti-disengagement seat (7) is provided with a metal piece with an opening, and the metal piece is in a square structure, the circular hole (16) of the assembled handle (3) is hung with the metal piece of the anti-disengagement seat (7).

6. The multi-layered plastic box according to claim 1, wherein: The nut (6) is threadedly connected with the upper end of the threaded column (5), and the nut (6) abuts the inner side surface of the trapezoidal inner support (4), and the outer surface of the nut (6) is provided with a plurality of anti-skid ribs.

7. A multi-layer plastic box according to claim 1, characterized in that: each The bottom of the unit plastic box (1) is integrally injection molded with an anti-misplacement protrusion, and the anti-misplacement protrusion of the upper layer of the unit plastic box (1) extends to the inside of the opening of the lower layer of the unit plastic box (1).

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