CN113120421A

CN113120421A - Food packaging bottle

Info

Publication number: CN113120421A
Application number: CN202110470534.0A
Authority: CN
Inventors: 李留华
Original assignee: Individual
Current assignee: Beijing Hongguo Time Marketing Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-16
Anticipated expiration: 2041-04-28
Also published as: CN113120421B

Abstract

The invention discloses a food packaging bottle, which comprises a bottle body and a cover, wherein yoghourt is filled in the bottle body, the bottle opening of the bottle body is closed by a sealing film, the cover comprises an inner cover and an outer cover, and the inner cover comprises a central body and an annular body; the central body is positioned above the sealing film, the bottom of the central body is provided with a puncture sheet, the interior of the central body is provided with a pneumatic assembly, the annular body is wrapped on the periphery of the central body, and the outer cover is wrapped on the periphery of the annular body; when the cap is opened, the outer cap is pressed down firstly, then the outer cap is rotated, in the process, the sealing film is punctured by the puncture piece below the central body, then an opening is cut out, if the yoghourt in the bottle body goes bad, the gas generated by the deterioration can pass through the opening of the sealing film to enter the pneumatic assembly in the central body, and then the deterioration prompt is displayed at the bottom of the central body by utilizing the air pressure. Therefore, when the yoghourt does not exceed the shelf life but is deteriorated, the user can obtain a prompt from the cover so as to avoid the situation that the deteriorated yoghourt is eaten by mistake only by judging the shelf life.

Description

Food packaging bottle

Technical Field

The invention relates to the field of food packaging, in particular to a food packaging bottle.

Background

The yogurt is classified into low-temperature yogurt and normal-temperature yogurt, wherein the low-temperature yogurt usually needs to be refrigerated for storage due to the large amount of live lactic acid bacteria, so as to control the activity of the lactic acid bacteria, because the lactic acid bacteria can be continuously fermented at normal temperature or high temperature and lose the activity in advance, and finally go bad and generate gas. For example, the shelf life of low-temperature yogurt can reach two to three weeks in an environment of 2 to 6 degrees celsius, but yogurt may be deteriorated after several hours because lactic acid bacteria are continuously fermented in a normal or high temperature environment.

It is known that the production date and shelf life of the outer package are marked at the time of shipment, so that if the low-temperature yogurt is not stored in a low-temperature environment as required after shipment, the yogurt may not exceed the shelf life but actually deteriorate. And the eater usually judges whether the yoghourt is overdue or not only according to the production date and the shelf life on the outer package, so that the eater is very likely to mistakenly eat the overdue yoghourt under the condition.

If the outer package can be improved to add a method for judging whether the yoghourt is deteriorated, the user can avoid the situation that the deteriorated yoghourt is eaten by mistake when the above situation is met.

Disclosure of Invention

The invention aims to improve the existing packaging bottle for low-temperature yoghourt, and when the yoghourt is deteriorated, the deterioration prompt can be displayed on the cover of the packaging bottle by using gas generated by deterioration.

In order to achieve the purpose, the invention provides a food packaging bottle which comprises a bottle body and a cover, wherein a bottle opening of the bottle body is closed by a sealing film, external threads are arranged on the periphery of the bottle opening, the cover comprises an inner cover and an outer cover, and the inner cover comprises a central body and an annular body;

the central body is cylindrical and is positioned above the sealing film, a first bump is arranged at the top of the central body, a puncture piece for cutting the sealing film is arranged at the bottom of the central body, a circle of convex edge is arranged on the periphery of the central body, a pneumatic assembly is arranged in the pneumatic assembly, the pneumatic assembly comprises a gas channel, a valve and a movable piece, the gas channel is positioned in the central body, an inlet of the gas channel is positioned at the bottom of the central body, the position, farthest from the inlet, of the gas channel is also positioned at the bottom of the central body and is sealed by a spacer with frosted surface, the spacer is embedded at the bottom of the central body, the valve is positioned in the gas channel and is close to the inlet, and the movable piece is positioned in the gas channel; when the valve is opened and the air pressure in the air channel exceeds a preset value, the movable sheet is attached to the inner side of the separation piece under the action of the air pressure and can be observed from the outer side of the separation piece;

the ring body is of a hollow cylinder structure, the ring body is wrapped on the periphery of the central body, the inner diameter of the ring body is larger than the outer diameter of the central body, the bottom of the ring body is connected with the outer thread of the bottle mouth through an inner thread, the inner wall of the ring body is provided with a first annular groove and a second annular groove which allow the convex edge of the central body to be clamped into the first annular groove and the second annular groove, and the first annular groove is positioned above the second annular; the central body is clamped in the first annular groove, cannot be separated from the annular body at the moment, but can freely rotate in the annular body, and when the central body moves downwards to the state that the convex edge is clamped in the second annular groove, the central body drives the annular body to rotate together when rotating;

the outer cover comprises an outer cover ring surface and an outer cover top surface which are connected into a whole, wherein the outer cover ring surface is wrapped on the periphery of the annular body, the outer cover top surface covers the central body and the annular body, and a second bump is arranged on the inner wall of the outer cover top surface; the outer cover is restrained by the annular body and cannot be separated from the inner cover, but the outer cover can move up and down in a specific range along the axial direction relative to the inner cover and can also rotate around the shaft relative to the inner cover; the outer cover moves downwards to the lowest point along the axial direction, the second bump can abut against the upper surface of the central body and push the central body to the position where the convex ribs are clamped into the second annular groove, meanwhile, the sealing film can be punctured by the puncture piece in the process, and in the process that the outer cover rotates around the shaft, the second bump can be in contact with the first bump.

Further, the gas channel comprises a main channel and two branch channels; the main channel is vertically arranged in the central body, the inlet is positioned at the bottom of the main channel, and the valve is arranged in the main channel; two the one end of a passageway all communicates with the one end that the entry was kept away from to main entrance, and the other end is located respectively the both sides of the main entrance of center body bottom, the quantity of movable plate is two and is located two passageways respectively, the quantity of baffle also is two and seals respectively in two passageways one end of keeping away from the main entrance.

Further, the valve includes first gas pocket ring, second gas pocket ring, end cap and first spring, wherein, first gas pocket ring with the second gas pocket ring all is provided with the through-hole that the gas passed, and first gas pocket ring is fixed in the main entrance, in the main entrance of second gas pocket ring fixed in first gas pocket ring top, the end cap is located between first gas pocket ring and the second gas pocket ring, the one end and the second gas pocket of first spring ring link, and the other end is connected with the end cap, and when first spring was in natural state, the end cap top was leaned on in the top of first gas pocket ring and was sealed the through-hole of first gas pocket ring.

Furthermore, the movable plate can move in the branch channel, the periphery of the movable plate keeps sealed with the inner wall of the branch channel, one side of the movable plate, which deviates from the spacer, is connected with a second spring, and one end, which is far away from the movable plate, of the second spring is connected with the inner wall of the branch channel.

Further, the side of the movable sheet facing the spacer is marked with a mark for reflecting that the food in the bottle is expired.

Furthermore, the outer wall of the ring body is provided with a circle of convex ring, the inner wall of the outer cover ring surface is provided with a circle of concave ring, wherein the convex ring is embedded in the concave ring, the width of the concave ring is greater than that of the convex ring, and the depth of the concave ring is greater than that of the convex ring.

Furthermore, the outer surface of the convex edge of the central body is arc-shaped, and the maximum protruding height of the convex edge relative to the outer surface of the central body is between 0.2mm and 1.5 mm;

the first annular groove and the second annular groove of the annular body are both concave arc-shaped grooves, when the convex edge is positioned in the first annular groove, the convex edge is in clearance fit with the first annular groove, and when the convex edge is positioned in the second annular groove, the convex edge is in interference fit with the second annular groove.

Further, the rib is integrally formed around the central body.

Furthermore, the convex edge is a silica gel ring which is clamped in a groove around the central body.

Further, one side of the spacer, which faces the movable plate, is provided with an adhesive. When the movable piece moves to the position of being attached to the spacer, the adhesive can adhere the movable piece to the back of the spacer, so that after the cover is opened, the cover leaves the bottle opening, and even if the air pressure in the air channel is reduced, the movable piece cannot move or can be attached to the back of the spacer.

Because the low-temperature yoghourt can go bad in advance and generate gas when being stored improperly, whether the yoghourt in the packaging bottle goes bad can be judged according to whether the air pressure in the packaging bottle rises.

The improved packaging bottle of the invention has the advantages that the pneumatic component is arranged in the central body of the inner cover, the movable sheet in the pneumatic component can move when the air pressure exceeds the preset value, so that whether the yoghourt in the bottle is deteriorated can be judged according to the moving condition of the movable sheet, for example, if the yoghourt is deteriorated, a large amount of gas is generated in the bottle, the air pressure is higher, when a user opens the cover, the sealing membrane of the bottle opening can be scratched by the puncture sheet below the central body in the cover opening process, the gas in the bottle can enter the gas channel of the pneumatic component, then the gas can firstly push the valve open, then the movable sheet is pushed to move to the back of the separation sheet and is adhered with the separation sheet, and due to the overdue mark engraved on the movable sheet, the user can observe corresponding prompt from the inner surface (namely the lower surface of the central body) of the cover after opening the cover, at the moment, the eater can stop eating the yoghourt, so that the situation of eating deteriorated yoghourt by mistake is avoided, if the yoghourt is not deteriorated, the air pressure in the bottle cannot rise, and therefore, when the cover is opened, even if the sealing film is scratched by the puncture sheet, the valve of the pneumatic assembly cannot be pushed away, the movable sheet cannot move, and therefore, the overdue prompt cannot be observed from the inner side of the cover, and the eater can eat the yoghourt without worry.

Namely, the present invention has the following advantageous effects: by improving the cover of the packaging bottle, a method for judging whether the yoghourt in the bottle is deteriorated is added, and when the yoghourt is not stored according to the requirement and the situation that the yoghourt does not exceed the quality guarantee period but actually is deteriorated occurs, a user can observe the deterioration prompt of the yoghourt from the inner surface of the cover when opening the cover, so that the problem that the deteriorated yoghourt is eaten by mistake under the situation can be solved.

Drawings

FIG. 1 is a schematic view of the structure of the packaging bottle of the present invention;

FIG. 2 is an enlarged view of the closure and finish of FIG. 1;

FIG. 3 is an enlarged view within dashed box A of FIG. 2;

FIG. 4 is an enlarged view within dashed box B of FIG. 2;

FIG. 5 is a schematic view of the base of FIG. 2 after the outer cap has pushed the centerbody downward;

FIG. 6 is an enlarged view within dashed box C of FIG. 5;

FIG. 7 is a schematic view of the outer cover rotating the central body and the ring body based on FIG. 5;

FIG. 8 is an enlarged view within dashed box D of FIG. 7;

FIG. 9 is a schematic view of the bottom of the centerbody of FIG. 7;

FIG. 10 is a schematic view of the structure in which the slotted hole, the third spring and the pressing block are provided on both sides of the branch passage.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

The yogurt is classified into low-temperature yogurt and normal-temperature yogurt, wherein the low-temperature yogurt contains a large amount of live lactic acid bacteria, so that the low-temperature yogurt needs to be refrigerated for storage to control the activity of the lactic acid bacteria. If the merchant or the consumer improperly preserves the low-temperature yogurt, the low-temperature yogurt may be deteriorated without exceeding the shelf life, and the consumer usually cannot perceive the low-temperature yogurt before eating the low-temperature yogurt and only finds that the taste of the low-temperature yogurt is not reflected after eating the low-temperature yogurt.

The deteriorated yoghourt can generate a large amount of gas due to internal fermentation, so that the yoghourt packaged in a soft package (such as paper package) can be subjected to a bag expansion phenomenon when being deteriorated, but the yoghourt packaged in a hard package (such as a thick-wall plastic bottle or glass bottle package) cannot be observed to have any abnormality from the outside. Therefore, the inventor improves the existing hard yoghourt packaging bottle, and when the yoghourt is deteriorated, the deterioration prompt can be reflected on the cover of the packaging bottle by using the gas generated by the deteriorated yoghourt so as to remind the eater of avoiding eating the deteriorated yoghourt without the shelf life by mistake.

Specifically, as shown in fig. 1 to 9, the present invention provides a food packaging bottle, which includes a bottle body 1 and a cover 2, wherein a bottle mouth 11 of the bottle body 1 is closed by a sealing film 12, an external thread 111 is disposed around the bottle mouth 11, the cover 2 includes an inner cap and an outer cap 21, and the inner cap includes a central body 22 and an annular body 23.

In the present embodiment, the bottle body 1 is made of plastic material and the wall thickness of the bottle body 1 is thick, or the bottle body 1 may be made of glass, so that when the yogurt in the bottle body 1 is deteriorated and generates gas, the bottle body 1 is not expanded, and thus the aforementioned "bag expansion" phenomenon is not observed from the outside of the bottle body 1.

Referring to fig. 2, the central body 22 is cylindrical and located above the sealing membrane 12, a first protrusion 221 is disposed on the top of the central body 22, a piercing piece 222 for cutting the sealing membrane 12 is disposed on the bottom of the central body, a circle of ribs 223 is disposed around the central body, and a pneumatic assembly 224 is disposed inside the central body. Referring to fig. 4, the pneumatic assembly 224 includes a gas passage 2241, a valve 2242 and a movable plate 2243, the gas passage 2241 is located inside the central body 22, an inlet 2241a of the gas passage 2241 is located at the bottom of the central body 22, the position of the gas passage 2241 farthest from the inlet 2241a is also located at the bottom of the central body 22 and is closed by a surface-polished spacer 225, the spacer 225 is embedded in the bottom of the central body 22, the valve 2242 is located in the gas passage 2241 near the inlet 2241a, and the movable plate 2243 is located in the gas passage 2241 near the spacer 225. In the natural state, the valve 2242 is in the closed state, the movable piece 2243 is spaced from the separation plate 225, and the movable piece 2243 cannot be seen from the outside of the separation plate 225 (see fig. 4), and when the valve 2242 is opened by the gas pressure entering the gas passage 2441 and the gas pressure in the gas passage 2241 exceeds a predetermined value, the movable piece 2243 is attached to the inside of the separation plate 225 by the gas pressure, and the movable piece 2243 can be seen from the outside of the separation plate 225 (see fig. 8).

Referring to fig. 2, the ring body 23 is a hollow cylinder structure, and the inner diameter of the ring body 23 is larger than the outer diameter of the ring body 22, and the bottom of the ring body 23 is connected to the external thread 111 of the bottle mouth 11 through an internal thread 231, and the inner wall of the ring body 23 is provided with a first annular groove 232 and a second annular groove 233, which allow the rib 223 of the ring body 22 to be clamped into the first annular groove 232 and the second annular groove 233, wherein the first annular groove 232 is located above the second annular groove 233, see fig. 3. Before the cover 2 is not opened, the rib 223 of the central body 22 is caught in the first annular groove 232 (see fig. 3), and the central body 22 cannot be separated from the annular body 23 but can freely rotate in the annular body 23, and when the central body 22 moves down to a position where the rib 223 is caught in the second annular groove 233, the central body 22 rotates to drive the annular body 23 to rotate together (see fig. 6).

Referring to fig. 2, the outer cover 21 includes an outer cover ring surface 211 and an outer cover top surface 212 that are integrally connected, wherein the outer cover ring surface 211 is wrapped around the annular body 23, the outer cover top surface 212 covers the central body 22 and the annular body 23, and the inner wall of the outer cover top surface 212 is provided with a second protrusion 2121. The outer cap 21 is constrained by the annular body 23 and cannot be detached from the inner cap, but the outer cap 21 is movable up and down within a predetermined range (for example, up and down within a range of 1 cm) in the axial direction with respect to the inner cap, and is also rotatable around an axis with respect to the inner cap. During the process that the outer cap 21 moves down to the lowest point in the axial direction, the second protrusion 2121 abuts against the upper surface of the central body 22 and pushes the central body 22 to a position where the protruding rib 223 is snapped into the second annular groove 233 (see fig. 6), and meanwhile, the puncture sheet 222 punctures the sealing film 12 (see fig. 5) during this process, during the process that the outer cap 21 rotates around the shaft, the second protrusion 2121 of the outer cap 21 can contact with the first protrusion 221 and push the first protrusion 221 to rotate together, that is, during the rotation of the outer cap 21, because the second protrusion 2121 contacts with the first protrusion 221, the central body 22 rotates together under the push of the second protrusion 2121.

The sealing film 12, besides closing the bottle opening 11, has the following functions: when the cap 2 is not opened and the bottle body 1 is inclined or inverted, yogurt is prevented from entering the gas passage 2241 to block the gas passage 2241.

Preferably, referring to fig. 4, the gas passage 2241 includes a main passage 22411 and two branch passages 22412. The main passage 22411 is vertically disposed within the center body 22, the inlet 2241a is located at the bottom of the main passage 22411, and the valve 2242 is disposed within the main passage 22411. Two branch passageways 22412 all be L shape, the one end intercommunication that entry 2241a was kept away from to the one end of two branch passageways 22412 all with main passageway 22411, the other end is located respectively the both sides of main passageway 22411 entry 2241a of central body 22 bottom, the quantity of activity piece 2243 is two and is located two branch passageways 22412 respectively, the quantity of baffle 225 also is two and seals respectively and keep away from the one end of main passageway 22411 at two branch passageways 22412.

Preferably, the side of the movable plates 2243 facing the separation plate 225 is marked with a mark for reflecting that the yogurt in the bottle body 1 has expired, for example, a red over character is marked on one movable plate 2243, and a red date character is marked on the other movable plate 2243, so that when the two movable plates 2243 are attached to the separation plate 225, the red over date character can be clearly observed from the bottom of the central body 22, as shown in fig. 9.

The spacer 225 is preferably made of a white frosted plastic sheet or an edible white frosted film. The purpose of the spacer 225 is to: since the movable piece 2243 is marked with an expiration mark, the inventor wishes that the mark on the movable piece 2243 cannot be seen from the bottom of the partition 225 when the yogurt is not expired, and intentionally frosts the partition 225 so that the mark on the movable piece 2243 can be seen from the bottom of the partition 225 only when the movable piece 2243 is moved at a sufficiently small distance from the partition 225.

Preferably, referring to fig. 4, the valve 2242 includes a first vent ring 22421, a second vent ring 22422, a stopper 22423, and a first spring 22424. Wherein, first air hole ring 22421 with second air hole ring 22422 all is provided with the through-hole that the gas passed, and first air hole ring 22421 is fixed in the main entrance 22411, second air hole ring 22422 is fixed in the main entrance 22411 of first air hole ring 22421 top, end cap 22423 is located between first air hole ring 22421 and second air hole ring 22422, first spring 22424's one end and second air hole ring 22422 are connected, and the other end is connected with end cap 22423, and when first spring 22424 was in natural state, end 22423 top leaned on in the top of first air hole ring 22421 and sealed first air hole ring 22421's through-hole.

Wherein, the first spring 22424 satisfies the following conditions: when the yogurt in the bottle body 1 is deteriorated and a certain amount of gas is generated, the first spring 22424 cannot maintain the closing state of the plug 22423, i.e. the plug 22423 is pushed open, and the first spring 22424 is compressed. The specific specification of the first spring 22424 can be determined by experiment according to actual conditions, and preferably, the first spring 22424 can ensure that the plug 22423 is opened when the yoghourt begins to deteriorate and generates a small amount of gas.

Preferably, the movable plate 2243 can move in the branch passage 22412, the periphery of the movable plate 2243 keeps sealed with the inner wall of the branch passage 22412, one side of the movable plate 2243, which is far away from the separation plate 225, is connected with a second spring 2244, and one end of the second spring 2244, which is far away from the movable plate 2243, is connected with the inner wall of the branch passage 22412, see fig. 4.

Wherein, the sealing between the periphery of the movable sheet 2243 and the inner wall of the branch passage 22412 can be realized by arranging a sealing ring on the movable sheet 2243. The arrangement of the second spring 2244 satisfies the following condition: when the second spring 2244 is in a natural state, the movable piece 2243 is spaced from the spacer 225 by a sufficient distance so that the movable piece 2243 on the back surface of the spacer 225 cannot be seen from the outside of the spacer 225, and when yogurt starts to deteriorate, a small amount of gas is generated, and the stopper 22423 of the valve 2242 is opened, the second spring 2244 is stretched by the push of the air pressure on the movable piece 2243, and the movable piece 2244 can be moved to a position where it abuts against the spacer 225.

The aforementioned "the outer cap 21 is constrained by the annular body 23 and cannot be detached from the inner cap, but the outer cap 21 can move up and down in a specific range in the axial direction relative to the inner cap and can also rotate around the axis relative to the inner cap" is specifically realized by the following formula: referring to fig. 2, the outer wall of the annular body 23 is provided with a ring of convex rings 234, the inner wall of the outer cover annular surface 211 is provided with a ring of concave rings 2111, wherein the convex rings 234 are embedded in the concave rings 2111, the width of the concave rings 2111 is greater than the width of the convex rings 234 (i.e., the vertical dimension of the concave rings 2111 is greater than the vertical dimension of the convex rings 234 in fig. 2), and the depth of the concave rings 2111 is greater than the height of the convex rings 234 (i.e., the transverse dimension of the concave rings 2111 is greater than the transverse dimension of the convex rings 234 in fig. 2).

Preferably, referring to fig. 3, the outer surface of the rib 223 of the central body 22 is curved, and the maximum protruding height of the rib 223 relative to the outer surface of the central body 22 is between 0.2mm and 1.5 mm. The first annular groove 232 and the second annular groove 233 of the annular body 23 are both concave arc-shaped grooves, and when the protruding rib 223 is located in the first annular groove 232, the protruding rib 223 and the first annular groove 232 are in clearance fit, and when the protruding rib 223 is located in the second annular groove 233, the protruding rib 223 and the second annular groove 233 are in interference fit.

For example, the outer diameter of the central body 22 is 28mm, the inner diameter of the annular body 23 is 30cm, the maximum protrusion height of the protruding rib 233 relative to the central body 22 is 1.5mm, the maximum depth of the first annular groove 232 is 1mm, the maximum depth of the second annular groove 233 is 0.3mm, the radius of curvature of the first annular groove 232 is consistent with the radius of curvature of the outer surface of the protruding rib 233, and the radius of curvature of the second annular groove 233 is greater than the radius of curvature of the outer surface of the protruding rib 233, so that when the protruding rib 223 is located in the first annular groove 232, a gap exists between the protruding rib 223 and the first annular groove 232, the protruding rib 223 and the second annular groove 233 are in clearance fit (see fig. 3), and when the protruding rib 223 is located in the second annular groove 233, the protruding rib 223 and the second annular groove.

In the present invention, the central body 22 is preferably made of plastic, and the protruding rib 223 may be an annular protrusion that is formed integrally with the central body 22 and is identical to the material of the central body 22, or a silicone ring that is separable from the central body 22 and is clamped in a groove (not shown) that is pre-arranged around the central body 22.

Preferably, the spacer 225 is provided with an adhesive on a side facing the movable plate 2243. Thus, when the movable piece 2243 moves to the position where it abuts against the spacer 225, the adhesive adheres the movable piece 2243 to the back surface of the spacer 225, and therefore, even if the cover 2 is exposed to the air after the cover 2 is opened, the air pressure in the gas passage 2241 decreases, the plug 22423 closes, and the movable piece 2243 is not pulled back by the second spring 2244 and remains attached to the back surface of the spacer 225.

Alternatively, instead of providing the adhesive, as shown in fig. 10, a slot 22451 may be provided on each of both sides of the branch passage 22412, and then a third spring 22452 and a pressing block 22453 may be installed in the slot 22451, wherein the top surface of the pressing block 22453 is an inclined surface and inclined downward from the outside to the inside, the bottom surface of the pressing block 22453 is a flat surface, the third spring 22452 is located on the back surface of the pressing block 22453, one end of the third spring 22452 is connected to the bottom surface of the slot 22451, and the other end of the third spring 22452 is connected to the pressing block 22453; when the third spring 22452 is in a natural state, the front end of the pressing block 22453 extends out of the slot 22451, when the movable piece 2243 moves downward to contact the pressing block 22453, the pressing block 22453 is pushed to retract into the slot 22451, and when the movable piece 2243 moves below the pressing block 22453, the pressing block 22453 extends out again under the action of the third spring 22452 and presses the movable piece 2243 downward, so that the movable piece 2243 is prevented from moving upward when the air pressure in the gas passage 2241 becomes small after the cover 2 is opened.

In the present invention, before the cap 2 is opened, the positional relationship of the components is as shown in fig. 2, at this time, the piercing piece 222 is located above the sealing film 12, the rib 223 of the central body 22 is clamped in the first annular groove 232 of the annular body 23, and since the two are in clearance fit, when the outer cap 21 is rotated, even if the second protrusion 2121 touches the first protrusion 221, the central body 22 can only be driven to rotate together, and the annular body 23 does not rotate, that is, at this time, only the outer cap 21 is rotated, so that the cap 2 cannot be opened.

When the cover is opened, the specific process is as follows:

first, the outer lid 21 is pressed down with force; in the process, the second protrusion 2121 below the top surface 212 of the outer cap contacts with the upper surface of the central body 22, and then transmits a downward force to the central body 22, so that the central body 22 moves downward, and therefore the rib 223 of the central body 22 is separated from the first annular groove 232 of the annular body 23, and then moves downward and is clamped into the second annular groove 233, and meanwhile, the piercing piece 222 also moves downward and punctures the sealing film 12, as shown in fig. 5 and 6;

thereafter, the outer cover 21 is rotated; at this time, since the protruding rib 223 is clamped in the second annular groove 233, and the protruding rib 223 and the second annular groove 233 are in interference fit, in the rotation process of the outer cap 21, after the second protruding block 2121 touches the first protruding block 221, the central body 22 and the annular body 23 are pushed to rotate together, and the annular body 23 is connected with the bottle opening 11 through a thread, so that the cap 2 is gradually opened, and meanwhile, the piercing piece 222 is driven by the central body 22 to form an arc-shaped opening on the sealing film 12, see fig. 7; in this process, if the yogurt in the bottle body 1 is deteriorated, the gas generated by the deterioration will pass through the opening of the sealing film 12 and enter the gas passage 2241 of the pneumatic assembly 224 of the central body 22, then push the plug 22423 of the valve 2242 away, and push the movable piece 2243 to move downward, so that the movable piece 2243 moves to the back of the spacer 225 and is adhered tightly (see fig. 8), so that after the cover 1 is opened, the 'overdue' characters marked on the movable piece 2243 will be seen from the outside of the spacer 225 on the lower surface of the central body 22 (see fig. 9), if the yogurt in the bottle body 1 is not deteriorated, the plug 22423 of the pneumatic assembly 224 will not be pushed, so that the movable piece 2243 will not move, and the characters marked on the movable piece 2243 will not be seen from the outside of the spacer 225; therefore, after the cover of the bottle is opened, a user can judge whether the yoghourt in the bottle body 1 goes bad according to whether the overdue two characters are displayed or not so as to avoid eating the deteriorated yoghourt by mistake.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a food packaging bottle, includes bottle (1) and lid (2), bottleneck (11) of bottle (1) are sealed by sealing membrane (12), be provided with external screw thread (111) around bottleneck (11), lid (2) are including inner cup and enclosing cover (21), its characterized in that: the inner cover comprises a central body (22) and an annular body (23);

the center body (22) is cylindric, and it is located the top of sealing membrane (12), and the top of center body (22) is provided with first lug (221), and the bottom is provided with and is used for cutting open piercing depth (222) of sealing membrane (12), is provided with round bead (223) all around, and inside is provided with pneumatic subassembly (224), pneumatic subassembly (224) include gas passage (2241), valve (2242) and activity piece (2243), gas passage (2241) is located the inside of center body (22), and entry (2241a) of gas passage (2241) is located the bottom of center body (22), and gas passage (2241) leaves entry (2241a) farthest position also is located the bottom of center body (22) and is sealed by spacer (225) of surface dull polish, spacer (225) are inlayed in the bottom of center body (22), valve (2242) is located be close to the position of entry 2241a in gas passage (2241), the movable sheet (2243) is positioned in the gas channel (2241) and close to the spacer (225); wherein, in a natural state, the valve (2242) is in a closed state, the movable sheet (2243) is spaced apart from the spacer (225), and the movable sheet (2243) is not visible from the outside of the spacer (225), and when the valve (2242) is opened and the gas pressure in the gas passage (2241) exceeds a predetermined value, the movable sheet (2243) is adhered to the inside of the spacer (225) under the action of the gas pressure, and the movable sheet (2243) is visible from the outside of the spacer (225);

the ring body (23) is of a hollow cylinder structure, the ring body is wrapped on the periphery of the central body (22), the inner diameter of the ring body is larger than the outer diameter of the central body (22), the bottom of the ring body (23) is connected with the outer thread (111) of the bottle mouth (11) through an inner thread (231), the inner wall of the ring body (23) is provided with a first annular groove (232) and a second annular groove (233), the convex rib (223) of the central body (22) is clamped into the first annular groove and the second annular groove, and the first annular groove (232) is located above the second annular groove (233); moreover, the rib (223) of the central body (22) is clamped in the first annular groove (232), at this time, the central body (22) cannot be separated from the annular body (23), but can freely rotate in the annular body (23), and when the central body (22) moves downwards to the rib (223) clamped in the second annular groove (233), the central body (22) can drive the annular body (23) to rotate together when rotating;

the outer cover (21) comprises an outer cover ring surface (211) and an outer cover top surface (212) which are connected into a whole, wherein the outer cover ring surface (211) is wrapped on the periphery of the annular body (23), the outer cover top surface (212) covers the central body (22) and the annular body (23), and a second bump (2121) is arranged on the inner wall of the outer cover top surface (212); the outer cover (21) is restrained by the annular body (23) and cannot be separated from the inner cover, but the outer cover (21) can move up and down in a specific range along the axial direction relative to the inner cover and can also rotate around the shaft relative to the inner cover; in the process that the outer cover (21) moves downwards to the lowest point along the axial direction, the second lug (2121) abuts against the upper surface of the central body (22) and pushes the central body (22) to the position where the convex rib (223) is clamped into the second annular groove (233), meanwhile, the puncture sheet (222) can puncture the sealing film (12), and in the process that the outer cover (21) rotates around the shaft, the second lug (2121) can be in contact with the first lug (221).

2. The food packaging bottle of claim 1, wherein: the gas passage (2241) includes a main passage (22411) and two branch passages (22412); said main channel (22411) being arranged vertically inside said central body (22), said inlet (2241a) being located at the bottom of the main channel (22411), said valve (2242) being arranged inside the main channel (22411); two the one end of propping up passageway (22412) all communicates with the one end that entry (2241a) was kept away from to main passageway (22411), and the other end is located respectively the both sides of main passageway (22411) entry (2241a) of central body (22) bottom, the quantity of activity piece (2243) is two and is located two and prop up passageway (22412) respectively, the quantity of baffle (225) also is two and seals respectively and prop up the one end of passageway (22412) and keep away from main passageway (22411) at two.

3. The food packaging bottle of claim 2, wherein: valve (2242) includes first orifice ring (22421), second orifice ring (22422), end cap (22423) and first spring (22424), wherein, first orifice ring (22421) with second orifice ring (22422) all is provided with the through-hole that supplies gas to pass, and first orifice ring (22421) is fixed in main passageway (22411), in second orifice ring (22422) is fixed in main passageway (22411) above first orifice ring (22421), end cap (22423) is located between first orifice ring (22421) and second orifice ring (22422), the one end and the second orifice ring (22422) of first spring (22424) are connected, and the other end is connected with end cap (22423), and when first spring (22424) is in natural state, end cap (22423) top is in the top of first orifice ring (22421) and live the through-hole of first orifice ring (22421) and seal.

4. The food packaging bottle of claim 2, wherein: the activity piece (2243) can be in it keeps sealed with the inner wall of propping up passageway (22412) all around with to prop up passageway (2243) to remove and activity piece (2243) in passageway (22412), and activity piece (2243) deviates from one side of spacer (225) is connected with second spring (2244), and the one end that activity piece (2243) was kept away from in second spring (2244) is connected with the inner wall of propping up passageway (22412).

5. The food packaging bottle of claim 1, wherein: the side of the movable sheet (2243) facing the separation sheet (225) is imprinted with a mark for reflecting that the food in the bottle body (1) is expired.

6. The food packaging bottle of claim 1, wherein: the outer wall of the annular body (23) is provided with a circle of convex ring (234), the inner wall of the outer cover annular surface (211) is provided with a circle of concave ring (2111), wherein the convex ring (234) is embedded in the concave ring (2111), the width of the concave ring (2111) is larger than that of the convex ring (234), and the depth of the concave ring (2111) is larger than that of the convex ring (234).

7. The food packaging bottle of claim 1, wherein: the outer surface of the convex rib (223) of the central body (22) is arc-shaped, and the maximum protruding height of the convex rib (223) relative to the outer surface of the central body (22) is between 0.2mm and 1.5 mm;

the first annular groove (232) and the second annular groove (233) of the annular body (23) are both concave arc-shaped grooves, when the convex rib (223) is positioned in the first annular groove (232), the convex rib (223) is in clearance fit with the first annular groove (232), and when the convex rib (223) is positioned in the second annular groove (233), the convex rib (223) is in interference fit with the second annular groove (233).

8. The food packaging bottle of claim 7, wherein: the rib (223) is integrally formed around the central body (22).

9. The food packaging bottle of claim 7, wherein: the convex edge (223) is a silica gel ring which is clamped in a groove around the central body (22).

10. The food packaging bottle of claim 1, wherein: the spacer (225) is provided with an adhesive on a side facing the movable plate (2243).