WO2019237682A1

WO2019237682A1 - Improved anti-deformation packaging container

Info

Publication number: WO2019237682A1
Application number: PCT/CN2018/118971
Authority: WO
Inventors: 张冬阳; 蔡啸杰; 蔡沧洋; 庄跃新
Original assignee: 泉州梅洋塑胶五金制品有限公司
Priority date: 2018-06-15
Filing date: 2018-12-03
Publication date: 2019-12-19
Also published as: CN109051275B; CN209225708U; CN109051275A

Abstract

An anti-deformation packaging container, comprising a container lid (1) and an opened container body (2), wherein a first inner matching groove (11) and a first outer matching groove (12) having a double-folded structure are arranged along edges of the container lid (1), and a second inner matching groove (21) and a second outer matching groove (22) having a double-folded structure are correspondingly arranged along an opening of the container (2); and an anti-unfastening structure is also provided. The foregoing anti-deformation packaging container has strong anti-deformation capabilities, and the anti- unfastening structure is stable.

Description

Improved anti-deformation packaging container

Technical field

The invention relates to a container, in particular to an improved anti-deformation packaging container.

Background technique

Traditional food containers or packaging containers, such as patented sealed lunch boxes disclosed in patent numbers 86210848, 87216769, 89200752, 94222756, etc., have a sealing device consisting of a locking mechanism such as a snap, a snap, a screw, and a sealing element. These designs are not only It has the disadvantages of complex structure and high cost, and it is not suitable for plastic and paper snack boxes. Patent No. 89218416 discloses a plastic blister snack box, which adopts two self-locking structures with concave and convex steps to replace the planar anastomosis of the original product. After the snack box is closed, it cannot be opened without relying on the outside, and the sealing performance is improved. . However, when such a fast-food box is squeezed and deformed, a gap is generated between the box cover and the box body, and the soup cannot effectively prevent the soup from overflowing.

Chinese invention patent 200510042475.8 discloses a fully sealed ultra-thin food container with excellent sealing performance and compressive strength, which can effectively prevent the leakage of food soup, and that the lid of the box is not easy to fall off when the flexible box is squeezed. It includes a box lid and an open box body. The edge of the box lid extends upward to form an inner groove wall. The upper end of the inner groove wall is horizontally bent to extend outward to form a groove top. The outer end of the groove top is bent downward to form an outer groove. The wall is formed by an inner groove wall, a groove top, and an outer groove wall forming a downwardly-opening annular groove.The box mouth of the box body extends upward to form an inner straight edge, and the upper end of the inner straight edge is horizontally bent outward to form a flat edge. The outer end of the flat edge is bent down to extend the outer straight edge.The inner straight edge, flat edge and outer straight edge form the double edge of the box mouth.The groove is buckled on the double edge of the box mouth.The inner groove wall of the groove The inner side is attached to the outer side of the inner straight edge of the double edge of the box mouth, and a lock portion is provided at the joint. The inner surface of the outer groove wall of the groove has a horizontally protruding projection, and the projection is locked. The outer straight edge of the rim of the box mouth is extended downward and outward, and the lower straight end of the rim of the box mouth is abutted on the inner side of the outer groove wall of the groove.

In the invention patent, the inner side of the inner wall of the groove is attached to the outer side of the inner straight edge of the box mouth compound edge, and a lock portion is provided at the joint to form an inner seal structure; the outer straight edge of the box mouth compound edge It extends obliquely downward and outward, and its lower end part is supported on the inner side surface of the outer groove wall of the groove to form an external sealing structure; the inner surface of the outer groove wall of the groove has a horizontally protruding protrusion, and the protrusion The lower end of the outer straight edge of the double edge of the lock box mouth forms a trip prevention structure. Therefore, excellent sealing performance and compressive strength can be achieved, and the food soup can be effectively prevented from leaking, and the cover is not easy to fall off when the flexible box body is squeezed.

technical problem

However, this invention patent still has the following deficiencies:

The outer straight edge of the double edge of the box mouth of the box body extends obliquely downward and outward, and its lower end part is supported on the inner side surface of the outer groove wall of the annular groove of the box cover. After the box cover and the open box body are correspondingly closed, the outer groove wall of the annular groove of the box cover is outside, and the outer straight edge of the box mouth of the box body is inward. When the position is squeezed by external force, it will be deformed inward and deformed. The compound edge of the box is subjected to an inward pulling force, and the anti-trip structure will be damaged. The lower end of the outer straight edge of the compound edge of the box cannot be locked in The convex groove on the inner side of the outer groove wall of the annular groove of the box cover. Therefore, the stability of the anti-trip structure of this packaging container needs to be strengthened under the action of external force.

Technical solutions

The object of the present invention is to provide an improved packaging container with stable anti-trip structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

An improved anti-deformation packaging container includes a container lid and an open container body. An edge of the container lid is outwardly extended with a first annular inner matching groove with a notch downward, and the first inner fitting The lower end portion of the outer groove wall of the groove is bent outwards and upwards in order to form a first annular outer matching groove with the groove opening upward; the mouth of the container body is provided with an annular groove with a downward opening downward A second inner fitting groove of the second inner fitting groove, the lower end of the outer groove wall of the second inner fitting groove is bent outwards and upwards in order to form a ring-shaped second outer fitting groove with the notch upward; The groove, the first outer fitting groove, the second inner fitting groove, and the second outer fitting groove are all elastic fitting grooves; the second inner fitting groove is nested in the first inner fitting groove, The first outer mating groove is nested in the second outer mating groove;

The inner side surface of the outer groove wall of the second outer matching groove is provided with a limiting protrusion, and the limiting protrusion locks an upper end portion of the outer groove wall of the first outer matching groove; or / and, the first The outer groove walls of the two outer mating grooves have a reverse tapered surface structure. The outer groove walls of the first outer mating groove and the outer groove walls of the second outer mating groove are in surface contact with each other or are elastically supported. Line contact; or / and, an outer side surface of the inner groove wall of the first inner mating groove and an inner side surface of the inner groove wall of the second inner mating groove are respectively provided with a first inner pressing member and a Two inner pressing members; or / and, a first outer pressing force that is engaged with each other is provided on an inner side surface of an outer groove wall of the first inner matching groove and an outer side surface of the outer groove wall of the second inner matching groove, respectively Component and second external pressing component.

The edge of the container lid is bent upwards to form an inner groove wall of the first inner mating groove, and an upper end portion of the inner groove wall of the first inner mating groove is bent outward to extend to form the first inner mating groove. The outer end of the groove top of the first inner mating groove is bent downward to extend to form the outer groove wall of the first inner mating groove or the inner groove wall of the first outer mating groove, The lower end portion of the outer groove wall of the first inner matching groove is bent outward to form a groove bottom of the first outer fitting groove, and the outer end portion of the groove bottom of the first outer fitting groove is bent upward to form the The outer groove wall of the first outer fitting groove; the mouth of the container body is bent upward to extend to form the inner groove wall of the second inner fitting groove, and the upper end portion of the inner groove wall of the second inner fitting groove is outward Bend and extend to form the groove top of the second inner matching groove, and the outer end portion of the groove top of the second inner fitting groove is bent downward to form the outer groove wall of the second inner fitting groove or the first The inner groove wall of the two outer mating grooves, and the lower end portion of the outer groove wall of the second inner mating groove is bent outward to extend to form the second outer mating groove. Bottom, the bottom outer end portion of the second outer mating groove extending upwardly bent to form the outer wall of the second groove mating outer groove.

The limiting protrusions are distributed along the circumferential direction on the inner side surface of the outer groove wall of the second outer matching groove, and the limiting protrusions have a dot-like structure or a pointed structure; or the limiting protrusions The block is in a closed loop shape and is arranged on the inner side surface of the outer groove wall of the second outer matching groove in the circumferential direction.

The outer groove wall of the second outer matching groove is provided with a handle or a pull ring.

The outer groove wall of the second outer matching groove is provided with first and second cutouts that are vertically distributed. The depth of the first and second cutouts is slightly smaller than that of the second outer fitting groove. The wall thickness of the outer groove wall.

The wall thickness of the outer groove wall of the second outer matching groove is 0.40 mm, and the depth of the first notch and the second notch is 0.30-0.35 mm.

The upper edge of the outer groove wall of the second outer matching groove is provided with a notch, and the outer groove wall of the second outer matching groove is provided with a thin-walled area corresponding to the notch in the vertical direction.

The wall thickness of the thin-walled region is 0.05-0.10 mm.

There is a gap between the groove bottom of the first outer mating groove and the groove bottom of the second outer mating groove.

Beneficial effect

After the above solution is adopted, in the improved packaging container of the present invention, the second inner mating groove is nested in the first inner mating groove, the first outer mating groove is nested in the second outer mating groove, and the edge of the container lid and the Rotary mating structures are formed between the rims. The strength of the joint between the container lid and the container body is relatively high. Among them, the anti-trip structure can adopt five forms. Both the third and the third are realized by the reverse tapered surface structure of the outer groove wall of the outer matching groove, and the fourth and the fifth are realized by the pressing member. When it is realized by the limiting protrusion, the limiting protrusion is above, the upper end portion of the outer groove wall of the first outer mating groove is below, and the upper end portion of the outer groove wall of the first outer mating groove is performed by the limiting protrusion. The lock forms a first anti-trip structure. When realized by the reverse tapered surface structure of the outer groove wall of the second outer mating groove, the outer groove wall of the first outer mating groove and the outer groove wall of the second outer mating groove are in surface contact with each other or are elastically supported. The methods are in line contact with each other, and the outer groove wall of the first outer matching groove is locked by the reverse tapered surface structure of the outer groove wall of the second outer matching groove to form second and third anti-trip structures, respectively. When realized by the pressing member, the outer side surface of the inner groove wall of the first inner matching groove and the inner side surface of the inner groove wall of the second inner matching groove are respectively provided with a first inner pressing member and a second inner engaging with each other. A pressing member; or / and, an inner side surface of the outer groove wall of the first inner matching groove and an outer side surface of the outer groove wall of the second inner matching groove are respectively provided with a first outer pressing member and a second outer pushing Pressing parts, respectively forming a fourth and a fifth anti-trip structure.

When the upper mouth of the container body is squeezed or twisted by external force along the lower position, it will be deformed inward and deformed. The second inner mating groove and the second outer mating groove both receive an inward and downward pulling force. And the second outer mating groove are interleaved with the first inner mating groove and the first outer mating groove, and the second outer mating groove is outside, the first outer mating groove is inside, and when the second inner mating groove and the second outer mating are fitted When the groove is pulled inward and downward by the external force, the second outer mating groove is pressed tighter outside the first outer mating groove, ensuring the stability of each anti-trip structure. The buckle structure locks tighter. Therefore, the improved packaging container of the present invention can effectively overcome squeezing or twisting by external force, has a stable anti-trip structure, and has high strength.

Further, a handle or a pull ring is provided on an outer groove wall of the second outer matching groove. Through the handle or the pull ring, the outer groove wall of the second outer matching groove can be easily pulled outward to deform it, and the outer groove wall of the first outer matching groove is exposed, which is convenient for opening the container lid.

Further, the outer groove wall of the second outer matching groove is provided with a first cutout and a second cutout that are vertically distributed, and the depth of the first cutout and the second cutout is slightly smaller than that of the second cutout. The wall thickness of the outer groove wall of the outer matching groove. The part of the outer groove wall of the second outer mating groove located between the two notches can be partially or completely opened vertically through two cutouts, exposing the outer groove wall of the first outer mating groove, which is convenient for opening the lid of the container.

Further, the upper edge of the outer groove wall of the second outer matching groove is provided with a notch, and the outer groove wall of the second outer matching groove is provided with a thin-walled area corresponding to the notch in a vertical direction. The thin-walled area is partially or completely ripped through this gap in the vertical direction to expose the outer groove wall of the first outer matching groove, which is convenient for opening the container lid.

Further, there is a gap between the groove bottom of the first outer mating groove and the groove bottom of the second outer mating groove. If the container is made of a material with a small amount of deformation, it is convenient to open the container.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an overall structure of Embodiment 1 of the present invention; FIG.

FIG. 2 is a schematic diagram of the cooperation between a box cover and a box body according to the first embodiment of the present invention; FIG.

3 is a schematic structural diagram of a box cover part in FIG. 2;

4 is a schematic structural diagram of a box body part in FIG. 2;

FIG. 5 is a schematic diagram of a cooperation between a box cover and a box body in Embodiment 2 of the present invention; FIG.

6 is a schematic structural diagram of a box cover part in FIG. 5;

7 is a schematic structural diagram of a box body portion in FIG. 5;

8 is a schematic structural diagram of a pull ring provided on an outer groove wall of a second outer matching groove in the present invention;

9 is a schematic structural diagram of a handle provided on an outer groove wall of a second outer matching groove in the present invention;

10 is a schematic structural diagram of a cutout provided on an outer groove wall of a second outer matching groove in the present invention;

11 is a schematic structural diagram of a thin-walled region provided on an outer groove wall of a second outer matching groove in the present invention;

FIG. 12 is a schematic diagram of the cooperation between the box cover and the box body in the third embodiment of the present invention; FIG.

Figure 13 is a schematic view of the cooperation of the box cover and the box body in Embodiment 4 of the present invention;

Figure 14 is a schematic diagram of the cooperation between the box cover and the box body in Embodiment 5 of the present invention;

FIG. 15 is a schematic diagram of the cooperation between a box cover and a box body in Embodiment 6 of the present invention.

Best Mode of the Invention

The invention is further described below with reference to the drawings.

The present invention provides an improved packaging container. For convenience of description, a packaging box is taken as an example for description.

In the present invention, the direction facing the central axis of the packaging box is inward and the direction facing away from the central axis of the packaging box is outward.

In the present invention, the box cover and the box body of the packaging box are all made of elastic material, or the matching parts of the box cover and the box body are made of elastic material. Elastic materials can be ultra-thin injection materials with better elasticity and plasticity, or other elastic materials, such as thicker plastics or elastic metals.

Embodiment one:

An improved anti-deformation packaging container according to the present invention, as shown in FIG. 1-4 of the first embodiment, includes a box cover 1 and an open box body 2, and a slot opening direction is provided on an edge of the box cover 1 extending outward. A lower first annular inner matching groove 11, and a lower end portion of the outer groove wall 113 of the first inner matching groove is bent outward and upwards in order to form a first annular outer matching groove 12 with an upward opening. The outer edge of the box body 2 is provided with a second annular inner matching groove 21 with a notch downward, and the lower end portion of the outer groove wall 213 of the second inner matching groove is bent outward and upward in order. Folded and extended to form a ring-shaped second outer mating groove 22 with the slot opening upward; the first inner mating groove 11, the first outer mating groove 12, the second inner mating groove 21 and the second outer The mating grooves 22 are all elastic mating grooves; the inner side surface of the outer groove wall 223 of the second outer mating groove is provided with a limiting bump 23; the second inner mating groove 21 is nested in the first inner mating groove 11 Inside, the first outer mating groove 12 is nested in the second outer mating groove 22, and the limiting protrusion 23 locks the upper end of the outer groove wall 123 of the first outer mating groove unit.

As shown in FIG. 3, an edge of the box cover 1 is bent upward to form an inner groove wall 111 of the first inner mating groove 11, and an upper end portion of the inner groove wall 111 of the first inner mating groove is bent outward. The groove top 112 of the first inner mating groove is folded to extend, and the outer end portion of the groove top 112 of the first inner mating groove is bent downward to extend to form the outer groove wall 113 or the outer groove wall of the first inner mating groove. The inner groove wall 121 of the first outer mating groove (the outer groove wall 113 of the first inner mating groove and the inner groove wall 121 of the first outer mating groove are common), and the lower end of the outer groove wall 113 of the first inner mating groove The outer bottom of the first outer mating groove is formed by bending outwardly to form the groove bottom 122 of the first outer mating groove, and the outer end portion of the first outer mating groove is bent upward to form an outer groove wall of the first outer mating groove. 123.

As shown in FIG. 4, the mouth of the box body 2 is bent upward and extends to form an inner groove wall 211 of the second inner fitting groove 21, and an upper end portion of the inner groove wall 211 of the second inner fitting groove is outward. Bend and extend to form the groove top 212 of the second inner fitting groove, and the outer end portion of the groove top 212 of the second inner fitting groove is bent down to form the outer groove wall 213 of the second inner fitting groove or The inner groove wall 221 of the second outer mating groove (the outer groove wall 213 of the second inner mating groove is shared with the inner groove wall 221 of the second outer mating groove). The lower end portion is bent outwardly to form the groove bottom 222 of the second outer mating groove, and the outer end portion of the groove bottom 222 of the second outer mating groove is bent up to extend to form the outer groove of the second outer mating groove. Wall 223.

In the improved packaging container of this embodiment, the second inner mating groove 21 is nested in the first inner mating groove 11, the first outer mating groove 12 is nested in the second outer mating groove 22, the edge of the box lid 1 and the box body The rims of 2 form a staggered rotary mating structure. The strength of the joint between the box cover 1 and the box body 2 is high; and the limiting projection 23 is on the upper end of the outer groove wall 123 of the first outer matching groove. The upper part of the outer groove wall 123 of the first outer matching groove is locked by the limiting protrusion 23 to form a first trip prevention structure. When the mouth of the box body 2 is squeezed or twisted by an external force at the lower position, it will be deformed inward and deformed. The second inner mating groove 21 and the second outer mating groove 22 both receive an inward and downward pulling force. The two inner mating grooves 21 and the second outer mating grooves 22 are interleaved with the first inner mating groove 11 and the first outer mating groove 12 and the second outer mating groove 22 is outside and the first outer mating groove 12 is inside. When the second inner mating groove 21 and the second outer mating groove 22 are pulled inwardly and downwardly by an external force, the second outer mating groove 22 is more tightly pressed outside the first outer mating groove 12 and the limit projection 23 is more tightly pressed at the first An upper end portion of the outer groove wall 123 of the outer matching groove 12 locks it, and the more it is squeezed or twisted by force, the anti-trip structure is locked tighter. Therefore, the improved packaging container of the present invention can effectively overcome squeezing or twisting by external force, has a stable anti-trip structure, and has high strength.

The limiting protrusions 23 are distributed along the circumferential direction on the inner side surface of the outer groove wall 223 of the second outer matching groove, and the limiting protrusions 23 have a dot-like structure or a pointed structure; or The position-limiting bumps 23 are formed in a closed loop shape on the inner side surface of the outer groove wall 223 of the second outer matching groove in the circumferential direction.

As shown in Figure 2-4, in the first structure of the first embodiment, the corresponding inner and outer groove walls of the first inner mating groove 11 and the second inner mating groove 21 each adopt a matching tapered surface structure. Each of the corresponding inner and outer groove walls of the one outer matching groove 12 and the second outer matching groove 22 adopts a matching tapered surface structure.

Embodiment two:

As shown in FIG. 5-7, the second embodiment of the present invention is different from the first embodiment only in that the corresponding inner and outer groove walls of the first inner matching groove 11 and the second inner matching groove 21 are adapted. In the straight edge structure, the corresponding inner and outer groove walls of the first outer mating groove 12 and the second outer mating groove 22 each adopt a matching straight edge structure.

In this embodiment, between the respective inner and outer groove walls of the first inner mating groove 11 and the second inner mating groove 21, the respective inner and outer groove walls of the first outer mating groove 12 and the second outer mating groove 22 Between them, and between the bottoms of the first inner mating groove 11 and the second inner mating groove 21, they may be in contact with each other, or may not be in contact.

Example three:

As shown in FIG. 12, the difference between this embodiment and the first embodiment is only that the limiting protrusion 23 is omitted, and the outer groove wall of the second outer matching groove 22 and the outer groove wall of the first outer matching groove 12 are in phase with each other. Adapted reverse tapered surface structure, the outer groove wall of the first outer mating groove 12 and the outer groove wall 223 of the second outer mating groove are fitted together to form an outer edge sealing structure, and the edge of the box cover 1 and the box are realized. Sealing performance between the rims of the body 2. The outer groove wall 123 of the first outer fitting groove is locked by the outer groove wall of the second outer fitting groove 22 of the reverse tapered surface structure to form a second trip prevention structure.

Embodiment 4:

As shown in FIG. 13, the difference between this embodiment and the first embodiment is only that: the limiting protrusion 23 is omitted, the outer groove wall of the second outer matching groove 22 has an inverted cone structure, and the The outer groove wall has a tapered surface structure, and the upper end portion of the outer groove wall 123 of the first outer mating groove is tilted upwards and outwards to support the inner side surface of the outer groove wall 223 of the second outer mating groove to form an outer seal line , To achieve the sealing performance between the edge of the box cover 1 and the mouth of the box body 2. The upper end portion of the outer groove wall 123 of the first outer fitting groove is locked by the outer groove wall of the second outer fitting groove 22 of the reverse tapered surface structure to form a third trip prevention structure.

Embodiment 5:

As shown in FIG. 14, the only difference from the embodiment is that the limiting protrusion 23 is omitted, the outer side of the inner groove wall 111 of the first inner matching groove 11 and the second inner matching groove 21 are omitted. A first inner pressing member 1111 and a second inner pressing member 2111 that are engaged with each other are respectively provided on the inner side surfaces of the inner groove wall 211. The first inner pressing member 1111 and the second inner pressing member 2111 are engaged with each other to form a fourth trip prevention structure.

Embodiment 6:

As shown in FIG. 15, the difference from the first embodiment is only that: the limiting protrusion 23 is omitted, the inner side surface of the outer groove wall 113 of the first inner matching groove 11 and the second inner matching groove 21 A first outer pressing member 1131 and a second outer pressing member 2131 which are engaged with each other are respectively provided on the outer sides of the outer groove wall 213. The first outer pressing member 1131 and the second outer pressing member 2131 are engaged with each other to form a fifth trip prevention structure.

The core invention of the present invention lies in that: inner and outer mating grooves are respectively provided on the edge of the container cover and the mouth of the container body, so that the edge of the container cover and the mouth of the container body form a mutually staggered rotary matching structure. The strength of the joint between the lid and the container body is high; the anti-trip structure can adopt five forms, the first one is realized by a limiting protrusion, and the second and the third are both through the outer groove wall of the outer matching groove. The reverse cone structure is implemented, and the fourth and fifth types are realized by the pressing member. When it is realized by the limiting protrusion, the limiting protrusion is above, the upper end portion of the outer groove wall of the first outer mating groove is below, and the upper end portion of the outer groove wall of the first outer mating groove is performed by the limiting protrusion. The lock forms a first anti-trip structure. When realized by the reverse tapered surface structure of the outer groove wall of the second outer mating groove, the outer groove wall of the first outer mating groove and the outer groove wall of the second outer mating groove are in surface contact with each other or are elastically supported. The methods are in line contact with each other, and the outer groove wall of the first outer matching groove is locked by the reverse tapered surface structure of the outer groove wall of the second outer matching groove to form second and third anti-trip structures, respectively. When realized by the pressing member, the outer side surface of the inner groove wall of the first inner matching groove and the inner side surface of the inner groove wall of the second inner matching groove are respectively provided with a first inner pressing member and a second inner engaging with each other. A pressing member; or / and, an inner side surface of the outer groove wall of the first inner matching groove and an outer side surface of the outer groove wall of the second inner matching groove are respectively provided with a first outer pressing member and a second outer pushing Pressing parts, respectively forming a fourth and a fifth anti-trip structure.

When the upper mouth of the container body is squeezed or twisted by external force along the lower position, it will be deformed inward and deformed. The second inner mating groove and the second outer mating groove both receive an inward and downward pulling force. And the second outer mating groove are interleaved with the first inner mating groove and the first outer mating groove, and the second outer mating groove is outside, the first outer mating groove is inside, and when the second inner mating groove and the second outer mating are fitted When the groove is pulled inward and downward by the external force, the second outer mating groove is pressed tighter outside the first outer mating groove, ensuring the stability of each anti-trip structure. The buckle structure locks tighter. Therefore, the packaging container of the present invention can effectively overcome squeezing or twisting by external force, and the anti-trip structure is relatively stable and has high strength.

In each of the embodiments of the present invention in which the limiting protrusion 23 is provided, the upper end of the outer groove wall 123 of the first outer matching groove is locked below the limiting protrusion 23.

In each embodiment of the present invention, if each groove wall of each matching groove adopts a tapered surface structure, the taper of the tapered surface is selected to be 2-12 °.

Further, as shown in FIGS. 8 and 9, the outer groove wall of the second outer matching groove is respectively provided with a pull ring 2231 and a handle 2232. Through the handle 2232 or the pull ring 2231, the outer groove wall of the second outer mating groove can be easily pulled outward to deform it, exposing the outer groove wall of the first outer mating groove, which is convenient for opening the container lid.

Further, as shown in FIG. 10, the outer groove wall of the second outer matching groove is provided with first slits 2233 and second slits 2234, which are vertically distributed, and the first slit 2233 and the second slit The depth of the cutout 2234 is slightly smaller than the wall thickness of the outer groove wall of the second outer fitting groove. The part of the outer groove wall of the second outer mating groove located between the two notches can be partially or completely opened vertically through two cutouts, exposing the outer groove wall of the first outer mating groove, which is convenient for opening the lid of the container.

Further, as shown in FIG. 11, an upper edge of an outer groove wall of the second outer matching groove is provided with a notch, and an outer groove wall of the second outer matching groove is provided corresponding to the notch in a vertical direction. Thin-walled area 2235. A part or all of the thin-walled area 2235 is torn apart vertically through this gap to expose the outer groove wall of the first outer matching groove, which is convenient for opening the container lid.

In each embodiment of the present invention, a gap may be left between the groove bottom 122 of the first outer mating groove and the groove bottom 222 of the second outer mating groove. If the gap exists, if a packing box is used The material with a small amount of deformation can be used to pry in the gap when opening the packaging box, which is convenient for opening the packaging box.

In each embodiment of the present invention, the five types of anti-trip structures can be separately provided, or two or three or four or five types can be used in combination.

The above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For a person of ordinary skill in the art, based on the above description, other aspects can be made. Changes or changes in different structural forms. There is no need and cannot be exhaustive for all implementations. However, these obvious changes or modifications that belong to the spirit of the present invention are still within the protection scope of the present invention.

Claims

An improved anti-deformation packaging container includes a container lid and an open container body, characterized in that the edge of the container lid is outwardly provided with a first annular inner matching groove with a notch downward, The lower end portion of the outer groove wall of the first inner mating groove is bent outwards and upwards in sequence to form a first annular outer mating groove with the groove opening upward; the mouth of the container body is provided with a groove opening extending outward. A lower ring-shaped second inner matching groove, and the lower end portion of the outer groove wall of the second inner matching groove is bent outward and upwards in order to form a ring-shaped second outer matching groove with an upward opening; The first inner mating groove, the first outer mating groove, the second inner mating groove, and the second outer mating groove are all elastic mating grooves; the second inner mating groove is nested in the first inner In the matching groove, the first outer matching groove is nested in the second outer matching groove;

The inner side surface of the outer groove wall of the second outer matching groove is provided with a limiting protrusion, and the limiting protrusion locks an upper end portion of the outer groove wall of the first outer matching groove; or / and, the first The outer groove walls of the two outer mating grooves have a reverse tapered surface structure. The outer groove walls of the first outer mating groove and the outer groove walls of the second outer mating groove are in surface contact with each other or are elastically supported. Line contact; or / and, an outer side surface of the inner groove wall of the first inner mating groove and an inner side surface of the inner groove wall of the second inner mating groove are respectively provided with a first inner pressing member and a Two inner pressing members; or / and, a first outer pressing force that is engaged with each other is provided on an inner side surface of an outer groove wall of the first inner matching groove and an outer side surface of the outer groove wall of the second inner matching groove, respectively Component and second external pressing component.
The improved anti-deformation packaging container according to claim 1, wherein an edge of the container lid is bent upward to extend to form an inner groove wall of the first inner fitting groove, and the first inner fitting groove The upper end portion of the inner groove wall is bent outward to form the groove top of the first inner mating groove, and the outer end portion of the groove top of the first inner fitting groove is bent downward to extend the first inner fit. The outer groove wall of the groove or the inner groove wall of the first outer fitting groove, and the lower end portion of the outer groove wall of the first inner fitting groove is bent outward to extend the groove bottom of the first outer fitting groove. The outer end portion of the groove bottom of the first outer fitting groove is bent upward to form an outer groove wall of the first outer fitting groove; the mouth of the container body is bent upward to extend to form the second inner fitting groove. An inner groove wall, an upper end portion of the inner groove wall of the second inner mating groove is bent outward to form a groove top of the second inner mating groove, and an outer end portion of the groove top of the second inner mating groove faces toward Bend and extend to form the outer groove wall of the second inner fitting groove or the inner groove wall of the second outer fitting groove, and the second inner fitting groove The lower end portion of the outer groove wall of the mating groove is bent outwardly to form a groove bottom of the second outer mating groove, and the outer end portion of the groove bottom of the second outer mating groove is bent up to extend to form the second outer portion. The outer groove wall of the mating groove.
The improved anti-deformation packaging container according to claim 1, wherein the position-limiting protrusions are spaced along the circumferential direction on the inner side surface of the outer groove wall of the second outer matching groove, The positional projections have a dot-like structure or a pointed structure; or the position-limiting projections are formed in a closed loop on the inner side surface of the outer groove wall of the second outer matching groove in the circumferential direction.
The improved anti-deformation packaging container according to claim 1, wherein the outer groove wall of the second outer matching groove is provided with a handle or a pull ring.
The improved anti-deformation packaging container according to claim 1, wherein the outer groove wall of the second outer matching groove is provided with a first cutout and a second cutout distributed in the vertical direction. The depth of the one notch and the second notch is slightly smaller than the wall thickness of the outer groove wall of the second outer matching groove.
The improved anti-deformation packaging container according to claim 5, wherein a wall thickness of an outer groove wall of the second outer matching groove is 0.40 mm, and the first cutout and the second cutout The depth is 0.30-0.35mm.
The improved anti-deformation packaging container according to claim 1, wherein the upper edge of the outer groove wall of the second outer matching groove is provided with a notch, and the outer groove wall of the second outer matching groove is A thin-walled area is provided in the vertical direction corresponding to this notch.
The improved anti-deformation packaging container according to claim 7, wherein the wall thickness of the thin-walled area is 0.05-0.10mm.
The improved anti-deformation packaging container according to claim 2, wherein there is a gap between the groove bottom of the first outer mating groove and the groove bottom of the second outer mating groove.

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