CN2216973Y

CN2216973Y - Plastic bottle cap with functions of anti-seep, anti-cracking and theft-proof

Info

Publication number: CN2216973Y
Application number: CN 94231225
Authority: CN
Inventors: 郑瀛
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-16
Filing date: 1994-12-16
Publication date: 1996-01-10
Anticipated expiration: 2004-12-16

Abstract

The utility model relates to a plastic bottle cap with the functions of seepage prevention, cracking prevention and theft prevention, which is composed of a cap body, a cap top, a theftproof ring, an easily pulled tooth, etc., wherein, a seal ring is arranged on the inner wall of the cap top and is inserted into a bottle opening. The outer wall of the seal ring is provided with a middle expanding body which is sealed with the inner wall of the bottle opening. The inner wall of the rotary angle of the cap top and the cap body is in circular arc transition of an R. Compared with the prior art, the utility model has the advantages of reasonable design, good sealing performance and uniform stress and achieves the seepage prevention, the cracking prevention and the theft prevention. The utility model is especially suitable for being matched with a beverage bottle.

Description

Antiseepage anticracking anti-theft plastic bottle lid

The utility model relates to bottle cap, particularly relates to antitheft plastic cap of bottle.This bottle cap matches with various packing plastic bottles (as mineral water, space water bottle etc.).

The all types of plastic bottle is widely used in industries such as food, medicine, cosmetics.In the bottling of the beverage packets of food, seepage often takes place in the product of prior art, take off phenomenons such as top and lid break.So-called seepage is because leak tightness is poor, and its major cause is that bottleneck relies on the convex tendon compression seal in the bottle cap, and contact surface is little, and therefore force limited easily produces seepage; What is called is taken off the top, is that separate with lid at the bottle cap top or part is separated, and its reason is that caping was stressed excessive after bottle cap screwed in bottleneck, is weak part at the transition position of caping and lid, produces separation and takes off the top; So-called lid breaks, and its reason is that lid both had been subjected to expansionary force after screwing, and is subjected to very big upper and lower tensile force again, therefore easily causes breaking.

The purpose of this utility model provides a kind of sealing and tightening structure to bottle cap and has done to improve design-calculated, made stressed rational antiseepage anticracking anti-theft plastic bottle lid of lid and cooperating of bottleneck.

The technical scheme of the utility model antiseepage anticracking anti-theft plastic bottle lid is: be made up of lid, caping and institutes such as anti-theft ring, easy-to-draw tooth, on the caping inwall, seal ring is arranged, seal ring inserts in the bottleneck, the outer wall of seal ring is the middle part varicosity, varicosity seals mutually with the bottleneck inwall, is the arc transition of a R at the corner inwall of caping and lid.

The utility model discloses a kind of anti-theft plastic bottle lid, be provided with the seal ring that inserts in the bottleneck, and the outer wall of seal ring is the centre portion bulging that leak tightness is fine at the caping inwall.Take the R arc structure at the transition position of caping and lid, stressed reasonable.Compared with the prior art, solved the defective of existing products such as antiseepage, anticracking.

Fig. 1 is the utility model antiseepage anticracking anti-theft plastic bottle lid structural representation;

Fig. 2 is the utility model antiseepage anticracking anti-theft plastic bottle lid upward view;

Fig. 3 is the utility model caping inner seal ring and arc transition place scheme drawing.

Below in conjunction with Fig. 1-Fig. 3 embodiment of the present utility model is done detailed explanation.

The utility model relates to the anti-theft plastic bottle lid, caping 6, lid 2, anti-theft ring 1 and easy-to-draw tooth 9 are arranged, seal ring 7 is arranged on the inwall of caping, and seal ring is equivalent to a well interior plug, after bottle cap is screwed on the bottleneck, the inwall 11 that seal ring inserts bottleneck 4 matches, and the upper and lower external diameter of seal ring 7 is little, middle part varicosity 10, and general interior plug can't be compared, so leak tightness is strong, can not go up cunning again.Corner inwall 5 at caping 6 and lid 2 is R arc transition, and arc transition not only intensity is good, and bottleneck 4 and bottle cap are produced upwards and two component that outwards push up herein, leaves the gap between bottleneck top and lid, avoids caping to produce and takes off the top.There is hold-fast ring 12 in the outside, corner arc transition place at caping 6 and lid 2, and the power of holding tightly of hold-fast ring 12 rises the upper end outer wall of bottleneck and holds sealing function tightly.Original design sealing simultaneously relies on the convex tendon compression seal in bottleneck upper end and the bottle cap, and therefore lid must revolve very tightly, causes overtension thus, and lid is broken.The utility model can reduce bottle cap screwing tension force with seal ring 7 and 11 extruding of bottleneck 4 inwalls, avoids lid to break, so play the effect of antiseepage anticracking.And the easy-to-draw tooth 9 that connects lid 2 and anti-theft ring 1 is thicker, and good reliability behind the spiral cover is avoided broken teeth, and overcoming does not have uncork with regard to the decylization phenomenon.Bottleneck 4 connects screw thread 3 with lid 2, and the lid outer wall has anti-skidding muscle 8.

Claims

1, antiseepage anticracking anti-theft plastic bottle lid, form by lid, caping and institutes such as anti-theft ring, easy-to-draw tooth, it is characterized in that on caping (6) inwall seal ring (7) being arranged, seal ring inserts in the bottleneck (4), the outer wall of seal ring is a middle part varicosity (10), varicosity seals mutually with bottleneck inwall (11), is the arc transition of a R at the corner inwall (5) of caping (6) and lid (2).

2, antiseepage anticracking anti-theft plastic bottle lid as claimed in claim 1 is characterized in that the outside, arc transition place has hold-fast ring (12) hold-fast ring that bottleneck is held tightly sealing.