CN108001834A - A kind of strong plastic packing box of leakproofness - Google Patents

A kind of strong plastic packing box of leakproofness Download PDF

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Publication number
CN108001834A
CN108001834A CN201711144068.7A CN201711144068A CN108001834A CN 108001834 A CN108001834 A CN 108001834A CN 201711144068 A CN201711144068 A CN 201711144068A CN 108001834 A CN108001834 A CN 108001834A
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CN
China
Prior art keywords
extension
oblique
vertical
vertical extension
horizontal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711144068.7A
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Chinese (zh)
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CN108001834B (en
Inventor
林金顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Yongchun Jiawei Plastic Packaging Products Co Ltd
Original Assignee
Fujian Yongchun Jiawei Plastic Packaging Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Fujian Yongchun Jiawei Plastic Packaging Products Co Ltd filed Critical Fujian Yongchun Jiawei Plastic Packaging Products Co Ltd
Priority to CN201711144068.7A priority Critical patent/CN108001834B/en
Publication of CN108001834A publication Critical patent/CN108001834A/en
Application granted granted Critical
Publication of CN108001834B publication Critical patent/CN108001834B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/06Removable lids or covers having a peripheral channel embracing the rim of the container
    • B65D43/065Removable lids or covers having a peripheral channel embracing the rim of the container the peripheral channel having an inverted U-shape

Abstract

The present invention proposes a kind of strong plastic packing box of leakproofness,First oblique extension and the second oblique extension are completely into this card slot,Elastic it can open and contacted with the 3rd vertical extension after the upper end of the first oblique extension and the second oblique extension is resisted against the lower surface of the second horizontal extension portion arc the lower end of second oblique extension,As the first vertical extension goes successively to this card slot,First vertical extension supports the first oblique extension upwards,First oblique extension can play a supporting role the second oblique extension,The arcuate lower surface in the second horizontal extension portion can have downward reverse support force to the first oblique extension and the second oblique extension,The upper end of first oblique extension drives the upper end of the second oblique extension to be slided along the arcuate lower surface in the second horizontal extension portion towards the 3rd vertical extension,The medial surface of lower end along the 3rd vertical extension of second oblique extension, which is gradually taken advantage of a situation, to be slipped into storage tank and is stuck at fixture block,Automatically dual-seal is realized.

Description

A kind of strong plastic packing box of leakproofness
Technical field
The present invention relates to daily life field, and in particular to a kind of strong plastic packing box of leakproofness.
Background technology
The structure of plastic packing box has been known, as Chinese utility model patent CN201320651003.2 discloses one kind Disposable plastic fast food container, including box body and the box lid that is adapted with box body, are equipped with least two in the box body and are used for box body It is separated into the grid in multiple spaces, the outer peripheral edge of the box body is equipped with buckle closure side be connected with box lid, the grid height in the box body Upward lug boss is formed in the middle part of buckle closure side, the box lid, the outer peripheral edge of box lid is equipped with what is be adapted with the buckle closure side of box body Multiple latches have been evenly arranged in cover groove and cover groove inner wall, when the box body is covered with box lid, the grid top in box body Face and the bottom surface of box lid lug boss fit closely, and the buckle closure side of box body is fixed in the cover groove of box lid by latch.The box At least three bar gratings are equipped with vivo, and wherein at least two grid parallel arrangement, at least two bar gratings are arranged vertically.The box body With grid integrated injection molding.The buckle closure side bottom surface of the box body has been evenly arranged a plurality of reinforcing rib, the reinforcing rib and box lid sheet Body integrated injection molding.Reinforcing rib, reinforcing rib arrangement and the four of box lid are equipped between the lug boss and cover groove of the box lid A vertex and with box lid integrated injection molding.The box body, box lid are set to transparent configuration.
The structure of other plastic packing boxes of the structure of foregoing utility model with the market is substantially similar, is actually using Cheng Zhong, it is all not tight, poorly sealed with cases snap there are lid, easily there is the situation of internal gas and liquid leakage, to use Person brings many troubles, and practicality has much room for improvement.
In consideration of it, inventor furthers investigate the above problem, there is this case generation then.
The content of the invention
It is an object of the invention to provide one kind buckle it is tight and buckle while can realize automatically it is multi-sealed, it is close Envelope effect and heat insulation effect significantly improve, novel and reasonable structure, the strong plastic packing box of highly practical leakproofness.
In order to achieve the above object, the present invention uses such technical solution:
A kind of strong plastic packing box of leakproofness, including the plastic box body that is below and in top and and plastic casing The plastic box cover that body matches;The plastic box body and plastic box cover have at center and vertically arranged central axes, with Side towards the central axes direction is interior, to be outer towards the side of the central axes opposite direction;The plastic box body bag Include the filling part in lower part and the box clamping part being buckled in top and the plastic box cover;The box clamping part Including being connected simultaneously the outwards first level extension of horizontal extension with the filling part upper end, first level extension is connected to Portion outer end and the first vertical extension to extend upwards, be connected to the first vertical extension upper end and from the inside to the outside gradually it is oblique First oblique extension of upper extension, and it is connected to the first oblique extension upper end and from top to bottom gradually oblique outer extension Second oblique extension;
The plastic box cover includes the cap body in inner ring and matches buckle with the box clamping part in outer ring Cover latch portion;The cover latch portion includes and the edge of cap body connection and corresponding with the described first vertical extension The the second vertical extension to extend upwards, is connected to the second vertical extension upper end and corresponding with the described first oblique extension And outwards the second horizontal extension portion of horizontal extension, the 3rd for being connected to the second horizontal extension portion outer end and extending downwards are vertical Extension, and be formed at the 3rd vertical extension lower end and be stuck in the edge of the described second oblique extension lower end;Described second The lower edge of the cross section in horizontal extension portion is the low smooth arc in middle high both sides, and the width in the second horizontal extension portion Degree is less than the width of the described first oblique extension, and the width in the second horizontal extension portion is less than the described second oblique extension Subordinate end is to the horizontal distance between the described first oblique extension;The edge is in horizontal plane, the upper table of the edge Face edge is formed with the fixture block for being stuck in the described second oblique extension lower end inside, the fixture block and the 3rd vertical extension Formed with the storage tank for housing the second oblique extension lower end between portion;The width of the second oblique extension is less than The fixture block is the distance between to the second horizontal extension portion;
The inner side of the first vertical extension is formed formed with the first card division, the outside of the second vertical extension Have and match the second card division being fastened togather with first card division;The upper end of the first vertical extension is to described first The height of plane where the height of plane is less than the described second vertical extension upper end to second card division where card division, and The height of plane is more than in the described second vertical extension where the upper end of the first oblique extension to first card division Hold to the height of plane where second card division;The width of the 3rd vertical extension and the described second oblique extension It is identical;When the edge and the lower end of the described second oblique extension are fastened togather, first card division and the second card division When being fastened togather, the sealing of the upper end of the first oblique extension is resisted against the second horizontal extension portion and the 3rd vertical The intersection of extension, the lower end sealing of the first oblique extension are resisted against the outside of the described second vertical extension.
The lower edge of the cross section in the second horizontal extension portion is arc-shaped.
First card division is to be formed on the inside of the described first vertical extension and surround the annular ridge of one week, described Second card division is to be formed at the annular concave ditch to match on the outside of the described second vertical extension and with the annular ridge.
Second card division includes multiple annular concave ditch being arranged above and below, and the annular concave ditch of the top is extremely The height of plane where the cap body lower end is less than the annular ridge topmost to the first level extension upper table The height of plane where face;First card division includes multiple annular ridges being arranged above and below.
The fold section that the annular ridge is formed from the described first vertical extension is formed, the annular concave ditch by The fold section being formed in the described second vertical extension is formed.
Angle is equipped with reinforcing rib between the second vertical extension and the upper surface of the cap body.
After adopting the above technical scheme, the plastic packing box that the leakproofness of the present invention is strong, the construction of breakthrough Traditional Packing box Form, in actual use, by plastic box cover corresponding lid on plastic box body, box clamping part and cover latch portion are buckled in Together, it is specifically that plastic box cover pushes, the second vertical extension, the second horizontal extension portion and the 3rd vertical extension form card Slot structure, the first vertical extension, the first oblique extension and the second oblique extension rely on the first oblique extension and second The inclined plane of oblique extension, which is taken advantage of a situation, extend into the second vertical extension, the second horizontal extension portion and the 3rd vertical extension structure Into card slot in, edge is stuck in the lower end of the second oblique extension, and the first card division and the second card division are fastened togather, During stretching into, when the first oblique extension and the second oblique extension progresses into the second vertical extension, the second level is prolonged There is elasticity tension when in the card slot that exhibition portion and the 3rd vertical extension are formed, and ought the first oblique extension and second oblique After extension is completely into this card slot, the lower end of the second oblique extension elastic can be opened and contacted with the 3rd vertical extension, After the upper end of the first oblique extension and the second oblique extension is resisted against the lower surface of the second horizontal extension portion arc, with Plastic box cover to continue to push, the first vertical extension goes successively to this card slot, and support first is oblique upwards for the first vertical extension To extension, the first oblique extension can play a supporting role the second oblique extension, under the arc in the second horizontal extension portion Surface can have downward reverse support force to the first oblique extension and the second oblique extension, and make the first oblique extension Overturn gradually downward for fulcrum by lower end, gradient gradually reduces, and lateral dimension gradually increases, while the first oblique extension The upper end in portion drives the upper end of the second oblique extension vertically to prolong towards the 3rd along the arcuate lower surface in the second horizontal extension portion Exhibition portion is slided, and while sliding, the lower end of the second oblique extension is gradually taken advantage of a situation along the medial surface of the 3rd vertical extension It is slid downwardly into storage tank and is stuck at fixture block;Make the upper end sealing of the first oblique extension be resisted against the second level at the same time to prolong Exhibition portion and the intersection of the 3rd vertical extension, the lower end sealing of the first oblique extension are resisted against the second vertical extension Outside, realizes dual-seal automatically, and triple seal is realized in the first card division with the second card division, and storage tank is oblique with second The 4th resealing is realized in the lower end of extension, so realize carried out automatically while lid is buckled with plastic box body it is multiple close The defects of sealing, overcoming poorly sealed Traditional Packing box, leakiness internal gas and liquid etc..And work as box clamping part and cover latch After portion is fastened togather, confined space is formed between the arcuate lower surface in the second horizontal extension portion and the first oblique extension, this Confined space can play flow transition and contact of the temperature from plastic box body with plastic box cover can be also avoided while sealing effect Quick heat exchange is carried out at gap, plays certain insulation effect.Compared with prior art, leakproofness of the invention is strong Plastic packing box, it is buckled tight and can realize automatically multi-sealed while buckle, and sealing effect and heat insulation effect are shown Write and improve, novel and reasonable structure is highly practical.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention;
Fig. 2 is the exploded schematic cross-sectional view of the present invention;
Fig. 3 is the broken section structure diagram of first state of the present invention;
Fig. 4 is the broken section structure diagram of the second state of the invention;
Fig. 5 is the broken section structure diagram of the third state of the present invention.
In figure:
1- plastic box body 11- filling part 12- box clamping part 121- first level extensions 122- first vertically prolongs First oblique the second oblique extensions of extension 124- of exhibition portion the first card divisions of 1221- 123-
Second vertical the second card divisions of extension 2211- of 2- plastic box cover 21- cap body 22- cover latches portion 221- The vertical extension 224- edges 225- storage tanks 226- reinforcing rib 227- cards of the second horizontal extensions of 222- portion 223- the 3rd Block
3- central axes.
Embodiment
In order to further explain the technical solution of the present invention, it is described in detail below by specific embodiment.
A kind of strong plastic packing box of leakproofness of the invention, as shown in Figs. 1-3, including the plastic box body 1 being below With the plastic box cover 2 to match in top and with plastic box body 1, respectively by with elastic plastic material integrated injection molding, Specific material can be PC (makrolon) material, PE (polyethylene) materials and PP (polypropylene) material etc.;Plastic box body 1 and modeling Magazine lid 2 has at center and vertically arranged central axes 3, is interior using the side towards 3 direction of central axes, with direction The side of 3 opposite direction of central axes is outer.
Plastic box body 1 includes the filling part 11 in lower part and the box card being buckled in top and plastic box cover 2 Buckle 12;Box clamping part 12 includes being connected with 11 upper end of filling part and the first level extension 121 of outside horizontal extension, The the first vertical extension 122 for being connected to 121 outer end of first level extension and extending upwards, is connected to the first vertical extension 122 upper end of portion and the first oblique extension 123 gradually to extend obliquely from the inside to the outside, and it is connected to the first oblique extension 123 upper ends and from top to bottom the second oblique extension 124 of gradual oblique outer extension;Plastic box cover 2 includes the lid in inner ring Sub- main body 21 and the cover latch portion 22 for matching buckle with box clamping part 12 in outer ring;Cover latch portion 22 includes and cap body 21 edge connection and the second vertical extension 221 to extend upwards corresponding with the first vertical extension 122, are connected to second Vertical 221 upper end of extension and corresponding with the first oblique extension 123 and outwards horizontal extension the second horizontal extension portion 222, The 3rd vertical extension 223 for being connected to 222 outer end of the second horizontal extension portion and extending downwards, and be formed at the 3rd and vertically prolong 223 lower end of exhibition portion and the edge 224 for being stuck in the second oblique 124 lower end of extension;The cross section in the second horizontal extension portion 222 Lower edge is the low smooth arc in middle high both sides, and the width in the second horizontal extension portion 222 is less than the first oblique extension 123 width, the width in the second horizontal extension portion 222 are less than the second oblique 124 lower end of extension to the first oblique extension Horizontal distance between 123;Edge 224 is in horizontal plane, and the top surface edge of edge 224 is oblique formed with being stuck in second The fixture block 227 of 124 lower end inside of extension, it is oblique formed with accommodating second between 227 and the 3rd vertical extension 223 of fixture block The storage tank 225 of 124 lower end of extension;The width of second oblique extension 124 is less than the horizontal extension of fixture block 227 to the second portion The distance between 222;This structure can ensure that when the first oblique 123 and second oblique extension 124 of extension progresses into second There is elasticity when in the card slot that vertical extension 221, the second horizontal extension portion 222 and the 3rd vertical extension 223 are formed Power, and after the first oblique 123 and second oblique extension 124 of extension is completely into this card slot, the second oblique extension 124 lower end elastic can be opened and contacted with the 3rd vertical extension 223, when the first oblique extension 123 and second is oblique After the upper end of extension 124 is resisted against the lower surface of 222 arc of the second horizontal extension portion, with the first vertical extension 122 after Continuous to enter this card slot, the first vertical extension 122 supports the first oblique extension 123, the first oblique 123 meeting of extension upwards Play a supporting role to the second oblique extension 124, the arcuate lower surface in the second horizontal extension portion 222 oblique to first can prolong 123 and second oblique extension 124 of exhibition portion has downward reverse support force, and makes the first oblique extension 123 be by lower end Fulcrum is overturn gradually downward, and gradient gradually reduces, and lateral dimension gradually increases, while the first oblique extension 123 is upper End drives the upper end of the second oblique extension 124 along the arcuate lower surface in the second horizontal extension portion towards the 3rd vertical extension 223 slide, while sliding, the lower end of the second oblique extension 124 along the 3rd vertical extension 223 medial surface by Gradually take advantage of a situation and be slid downwardly into storage tank 225 and be stuck at fixture block 227;The inner side of first vertical extension 122 is formed with the first card Portion 1221, the outside of the second vertical extension 221 with the first card division 1221 formed with matching the second card division being fastened togather 2211;The height of the 1221 place plane of upper end to the first card division of first vertical extension 122 is less than the second vertical extension The height of 221 upper ends to the second card division, 2211 place plane, and the upper end of the first oblique extension 123 to the first card division 1221 The height of place plane is more than the second vertical 221 upper end of extension to the height of 2211 place plane of the second card division, this structure can Ensure that the second horizontal extension portion 222 can press the first oblique extension 123 downwards and can block the first card division 1221 and second Portion 2211 is fastened togather;3rd vertical extension 223 is of same size with the second oblique extension 124, this structure can be true The upper end for protecting the first oblique extension 123 is resisted against the phase of the second horizontal extension portion 222 and the 3rd vertical extension 223 just At friendship, and lower end of the edge 224 just with the second oblique extension 124 is fastened togather;When edge 224 oblique prolongs with second The lower end in exhibition portion 124 is fastened togather, when the first card division 1221 and the second card division 2211 are fastened togather, the first oblique extension The upper end sealing in portion 123 is resisted against the second horizontal extension portion 222 and the intersection of the 3rd vertical extension 223, and first is oblique The lower end sealing of extension 123 is resisted against the outside of the second vertical extension 221.The present invention in actual use, will mould On plastic box body 1, box clamping part 12 and cover latch portion 22 are fastened togather 2 corresponding lid of magazine lid, are specifically, plastic box cover 2 Push, the second vertical extension 221, the second horizontal extension portion 222 and the 3rd vertical composition of extension 223 notch, first Vertical extension 122, the first oblique 123 and second oblique extension 124 of extension are by the first oblique extension 123 and the The inclined plane of two oblique extensions 124 takes advantage of a situation and extend into the second vertical extension 221, the second horizontal extension portion 222 and the 3rd is erected In the card slot formed to extension 223, edge 224 is set to be stuck in the lower end of the second oblique extension 124, and the first card division 1221 It is fastened togather with the second card division 2211, during stretching into, when the first oblique 123 and second oblique extension 124 of extension Progress into the card slot that the second vertical extension 221, the second horizontal extension portion 222 and the 3rd vertical extension 223 are formed When there is elasticity tension, and after the first oblique 123 and second oblique extension 124 of extension is completely into this card slot, second The lower end of oblique extension 124 elastic can be opened and contacted with the 3rd vertical extension 223, when the first oblique 123 He of extension After the upper end of second oblique extension 124 is resisted against the lower surface of 222 arc of the second horizontal extension portion, with plastic box cover 2 after Continuous to push, the first vertical extension 122 goes successively to this card slot, and the upward support first of the first vertical extension 122 is oblique to prolong Exhibition portion 123, the first oblique extension 123 can play a supporting role the second oblique extension 124, the second horizontal extension portion 222 Arcuate lower surface can have downward reverse support force to the first oblique 123 and second oblique extension 124 of extension, and make First oblique extension 123 is overturn gradually downward by lower end for fulcrum, and gradient gradually reduces, and lateral dimension gradually increases, The upper end of the first oblique extension 123 drives arc of the upper end of the second oblique extension 124 along the second horizontal extension portion at the same time Shape lower surface is slided towards the 3rd vertical extension 223, and while sliding, the lower end of the second oblique extension 124 is along the The medial surface of three vertical extensions 223, which is gradually taken advantage of a situation, to be slid downwardly into storage tank 225 and is stuck at fixture block 227;Make first at the same time The upper end sealing of oblique extension 123 is resisted against the second horizontal extension portion 222 and the intersection of the 3rd vertical extension 223, the The lower end sealing of one oblique extension 123 is resisted against the outside of the second vertical extension 221, realizes dual-seal automatically, and Triple seal, the lower end of 225 and second oblique extension 124 of storage tank are realized in first card division 1221 and the second card division 2211 Realize the 4th resealing, and then realize and carry out automatically multi-sealed while lid 2 is buckled with plastic box body 1, overcome traditional bag The defects of mounted box is poorly sealed, leakiness internal gas and liquid etc..And when box clamping part 12 and cover latch portion 22 are buckled in one After rising, confined space is formed between the arcuate lower surface in the second horizontal extension portion 222 and the first oblique extension 123, this is closed Space can play flow transition and contact of the temperature from plastic box body 1 and plastic box cover 2 can be also avoided while sealing effect Quick heat exchange is carried out at gap, plays certain insulation effect.
Preferably, the lower edge of the cross section in the second horizontal extension portion 222 is arc-shaped.It is oblique that this structure is more conducive to first Smooth smoothly slip can be carried out to the upper end of the second oblique extension 124 to extension 123.
In order to implement the structure of the first card division 1221 and the second card division 2211, it is preferable that the first card division 1221 is shape Into in 122 inner side of the first vertical extension and around the annular ridge of one week, the second card division 2211 is to be formed at second vertically to prolong The outside of exhibition portion 221 and the annular concave ditch to match with the first card division 1221 of annular ridge form.
Preferably, the second card division 2211 includes multiple annular concave ditch being arranged above and below, and the annular concave ditch of the top extremely covers 1221 the top of the first card division to the first level that the height of plane where sub- 21 lower end of main body is less than annular ridge form extends The height of plane where 121 upper surface of portion.In actual use, user can make any annular as needed to the present invention Chase and the first card division 1221 of annular ridge form are fastened togather, and carry out the card of damper box clamping part 12 and cover latch portion 22 Depth is detained, and then adjusts the contact strength with cover latch portion 22 of the first oblique extension, to adjust required sealing effect.
Preferably, the first card division 1221 includes multiple annular ridges being arranged above and below, in this way, multiple annular ridge forms The first card division 1221 can be engaged with the second card division 2211 of multiple annular concave ditch forms carry out multiple annular ridges with it is multiple The multiple click on fashion that annular concave ditch is fastened togather at the same time, more firmly and leakproofness it is strong.
Preferably, the fold section that annular ridge is formed from the first vertical extension 122 is formed, and annular concave ditch is by shape Formed into the fold section in the second vertical extension 221.This structure is convenient for injection molding.
Preferably, angle is equipped with reinforcing rib 226 between the upper surface of the second vertical extension 221 and cap body 21. In actual use, the bending that reinforcing rib 226 can strengthen the second vertical extension 221 and cap body 21 is strong by the present invention Degree, and then strengthen the intensity and the buckle intensity of the first card division 1221 and the second card division 2211 of whole plastic box cover 2, and It is unlikely to deform after the second vertical extension 221 is subject to the supporting of the first oblique extension 123, strengthens sealing performance.
The product form of the present invention is not limited to this case diagram and embodiment, anyone carries out it similar thinking and fits When change or modification, all should be regarded as not departing from patent category of the invention.

Claims (6)

1. a kind of strong plastic packing box of leakproofness, including the plastic box body that is below and in top and with plastic box body phase Matched plastic box cover;The plastic box body and plastic box cover have at center and vertically arranged central axes, with direction The side in the central axes direction is interior, to be outer towards the side of the central axes opposite direction;It is characterized in that:The plastics Box body includes the filling part in lower part and the box clamping part being buckled in top and the plastic box cover;The box card Buckle includes being connected with the filling part upper end and the first level extension of outside horizontal extension, is connected to first level and prolongs Exhibition portion outer end and the first vertical extension to extend upwards, be connected to the first vertical extension upper end and from the inside to the outside gradually it is oblique First oblique extension of upper extension, and it is connected to the first oblique extension upper end and from top to bottom gradual the of oblique outer extension Two oblique extensions;
The plastic box cover includes the cap body in inner ring and matches the lid card of buckle with the box clamping part in outer ring Buckle;The cover latch portion includes and the connection of the edge of the cap body and corresponding with the described first vertical extension prolongs upwards Second vertical extension of exhibition, is connected to the second vertical extension upper end and corresponding with the described first oblique extension and outside water Flat the second horizontal extension portion extended, is connected to the second horizontal extension portion outer end and the 3rd vertical extension to extend downwards, and It is formed at the 3rd vertical extension lower end and is stuck in the edge of the described second oblique extension lower end;The second horizontal extension portion The lower edge of cross section be the low smooth arc in middle high both sides, and the width in the second horizontal extension portion is less than described the The width of one oblique extension, the width in the second horizontal extension portion are less than the described second oblique extension lower end to described the Horizontal distance between one oblique extension;The edge is in horizontal plane, and the top surface edge of the edge is formed with card In the fixture block of the described second oblique extension lower end inside, formed with accommodating between the fixture block and the 3rd vertical extension The storage tank of the second oblique extension lower end;The width of the second oblique extension is less than the fixture block to described second The distance between horizontal extension portion;
The inner side of the first vertical extension formed with the first card division, the outside of the second vertical extension formed with institute State the second card division that the matching of the first card division is fastened togather;Where the upper end of the first vertical extension to first card division The height of plane where the height of plane is less than the described second vertical extension upper end to second card division, and it is described first oblique It is more than the described second vertical extension upper end to described the to the height of plane where the upper end of extension to first card division The height of plane where two card divisions;The 3rd vertical extension is of same size with the described second oblique extension;When described Edge and the lower end of the described second oblique extension are fastened togather, when first card division is fastened togather with the second card division, The upper end sealing of the first oblique extension is resisted against the second horizontal extension portion and the intersection of the 3rd vertical extension, The lower end sealing of the first oblique extension is resisted against the outside of the described second vertical extension.
A kind of 2. strong plastic packing box of leakproofness according to claim 1, it is characterised in that:Second horizontal extension The lower edge of the cross section in portion is arc-shaped.
A kind of 3. strong plastic packing box of leakproofness according to claim 1 or 2, it is characterised in that:First card division To be formed on the inside of the described first vertical extension and around the annular ridge of one week, second card division is to be formed at described the The annular concave ditch to match on the outside of two vertical extensions and with the annular ridge.
A kind of 4. strong plastic packing box of leakproofness according to claim 3, it is characterised in that:Second card division includes Multiple annular concave ditch being arranged above and below, and plane where the annular concave ditch of the top to the cap body lower end Highly it is less than the annular ridge topmost to the height of plane where the first level extension upper surface;First card Portion includes multiple annular ridges being arranged above and below.
A kind of 5. strong plastic packing box of leakproofness according to claim 4, it is characterised in that:The annular ridge is by shape Fold section described in Cheng Yu in the first vertical extension is formed, and the annular concave ditch is formed from the described second vertical extension Fold section formed.
A kind of 6. strong plastic packing box of leakproofness according to claim 5, it is characterised in that:Described second vertical extension Angle is equipped with reinforcing rib between portion and the upper surface of the cap body.
CN201711144068.7A 2017-11-17 2017-11-17 A kind of plastic packing box that leakproofness is strong Active CN108001834B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110789847A (en) * 2019-11-12 2020-02-14 徐州达娇物资贸易有限公司 Insulation box for logistics transportation of frozen commodities and sealing method thereof
CN111483691A (en) * 2019-01-28 2020-08-04 金箭印刷科技(昆山)有限公司 Paper pulp moulded beverage cup cover and its making method

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CN110789847A (en) * 2019-11-12 2020-02-14 徐州达娇物资贸易有限公司 Insulation box for logistics transportation of frozen commodities and sealing method thereof

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