CN208616463U - A kind of turn-break type unscrewing lid with safeguard construction - Google Patents

Abstract

The utility model discloses a kind of, and the turn-break type with safeguard construction unscrews lid, including caping and cylindric tegmental wall, pit is formed on caping, it arches upward to form safety knobs upwards in the bottom surface of pit, pit and safety knobs are circle, up-small and down-big cyclic annular tapered wall is formed on the tegmental wall of caping, the lower part of tegmental wall is equipped with two bulge loops, annular groove is constituted between two bulge loops, several U-shaped joint-cuttings are equipped at the slot bottom of annular groove, tegmental wall on the upside of U-shaped joint-cutting slopes inwardly to form the punching press mouth of perforation tegmental wall, tegmental wall between adjacent punching press mouth, which is constituted, builds bridge, tegmental wall below punching press mouth constitutes anti-theft ring.The utility model efficiently solves the problems, such as that the unscrewing lid of the prior art lacks Product quality and safety prompting function and the easy injury of operator during uncapping is covered in the unscrewing of the prior art, the safety of unscrewing lid in use is substantially increased, there is very high practical value.

Description

A kind of turn-break type unscrewing lid with safeguard construction

Technical field

The utility model relates to packing container technical fields, and in particular to a kind of turn-break type unscrewing with safeguard construction Lid.

Background technique

The turn-break type unscrewing lid of the prior art has usually had a structure that caping and caping lateral margin and has been bonded in caping The synthetic resin gasket of inside, there is anti-theft ring on the downside of lateral margin, is connect by building bridge with lateral margin.By be inserted in vessel port and Caping applies certain pressure, contacts gasket with vessel port and has certain decrement, passes through lid lateral margin and packing container mouth On screw thread, anti-theft ring and packing container oral area edge curling seal hold, make unscrewing lid that can be enclosed in well on container and guarantee close Feng Xing.When unlatching, a hand holds container, and another hand, which pinches container cover and rotate towards thread looseness direction, to be moved up, due to anti-theft ring Being limited in container mouth neck portion after seaming can not move up, so the bridge formation of connection lateral margin and anti-theft ring is twisted off, lid removal.Usually Several notch are molded in unscrewing lid lateral margin lower end, constitutes and builds bridge between notch, forming out in this way, it is also longer to build bridge, and frame Bridge and notching edge are substantially exposed, and bridge formation will form multiple sharp breaking points outside after twisting off, and be easy to make to grasp when rotating lid Author is injured, and there are security risks.In addition, the safety of food is always an industry major issue of concern, and twist off Formula unscrewing lid can verify whether the product was opened by people by building bridge whether be damaged, to play anti-theft function.But it passes through The product of sealing is crossed can be due to shelf storage overlong time or various aspects, in the long-time temperature difference, collision and material Under various factors such as matter performance degradation, so that the product of sealing generates leakage problem originally, and at this time can not be from bridge formation The feature whether being broken judge food whether safety, may then cause food-safety problem.The turn-break type of the prior art revolves It uncaps and does not have food safety prompting function, the safety for the product how preferably to help and remind consumer alert to be bought The always direction made great efforts of industry.

On the other hand, it is that lid is inserted in container finish that unscrewing lid, which is capping procedure, after caping applies certain pressure, is turned Thread forming knife in the middle part of dynamic lid lateral margin and the sealing knife at the anti-theft ring of lower part, go out lid screw thread according to vessel port thread forming, Lid anti-theft ring is molded according to vessel port anti-theft ring neck structure.In order to guarantee sealing performance of the lid after capping, often Comparable pressure can be applied in caping in sealing, make in this way gasket and vessel port have just can guarantee under certain magnitude of interference it is close Envelope, but appearance the problems such as excessive caping pressure will cause container be collapsed, container anti-theft ring neck deformation.Unscrewing lid is to be beaten It can not recover to original state after the fracture of open-shelf bridge and play anti-theft function, but have such situation in real process and occur, by Can not be completely the same in container finish molding, when anti-theft ring seaming, can not especially be bonded the bulge loop of container, and unscrewing is caused to be covered It opens Shi Huixian to turn an angle, at first anti-theft ring and unscrewing lid one up move a small end after, anti-theft ring just can quilt Bulge loop blocks, continue to rotate unscrewing cover its bridge formation just start to be broken；The especially container of metal material, container mouth neck portion are used for Its cross section of bulge loop that limitation anti-theft ring moves up can only be molded into convex structure, therefore can not be close with it when anti-theft ring seaming Fitting, generally unscrewing cover open Shi Huixian turn an angle, thus exist a security risk, i.e., it is certain carry, It is touched during storage product and causes the rotation (or loosening) of unscrewing lid to a certain extent when unscrewing lid, i.e., do not had also in bridge formation The decrement of gasket becomes smaller before being broken, at this time since leakproofness variation can cause the shelf-life of product to greatly shorten.

Utility model content

The purpose of this utility model is to solve the unscrewing lid of the prior art and lacking Product Safety prompting function and opening Operator is easy injured problem and provides a kind of turn-break type unscrewing lid with safeguard construction during lid, can be to consumer Safety prompting is carried out, and greatly improves the safety of unscrewing lid in use.

The utility model another object is that for solve the prior art unscrewing cover in capping procedure due to caping pressure It is excessive and provide a kind of turn-break type with safeguard construction the problems such as be easy to cause container be collapsed, container anti-theft ring neck deformation The problems such as unscrewing lid, container be collapsed, container anti-theft ring neck deformation caused by unscrewing can be made to cover in capping procedure, is significantly It reduces.

The third purpose of the utility model is caused to solve the unscrewing lid of the prior art and being easy to appear leakproofness variation The problem of shelf life of products greatly shortens provides a kind of turn-break type unscrewing lid with safeguard construction, has structure simple, sealing Property good and feature easy to open.

The concrete scheme that the utility model uses to solve above-mentioned technical problem is a kind of turn-break type with safeguard construction Unscrewing lid, for the sealing of container finish, the unscrewing lid includes caping and extends downwardly the circle constituted by the outer rim of the caping Tubular tegmental wall, the lower surface of the caping are equipped with gasket, are formed with pit on caping, the bottom surface of pit arches upward to form peace upwards Full button, the pit and safety knobs are circle, are formed with up-small and down-big cyclic annular tapered wall on the tegmental wall of caping, are covered The lower part of wall is equipped with two and is parallel to each other and constitutes annular groove between the bulge loop of tegmental wall, two bulge loops, annular groove Several U-shaped joint-cuttings are circumferentially with along tegmental wall at slot bottom, the tegmental wall on the upside of the U-shaped joint-cutting slopes inwardly to form perforation tegmental wall Punching press mouth, the tegmental wall between adjacent punching press mouth, which is constituted, builds bridge, and the tegmental wall below punching press mouth constitutes anti-theft ring, and anti-theft ring passes through described Bridge formation is connect with the tegmental wall above punching press mouth.The utility model is equipped with a pit at the top of unscrewing lid, sets in the bottom surface of pit There is a upward arc arcuate configuration, this arcuate configuration is internal after product vacuumizes or product heat-seal is cooling to generate negative pressure When, under the action of external atmosphere pressure, which can sink to form downward concave surface, and within the shelf-life of product, should Concave surface exists always.When the food spoilage that the seal failure of container causes air to flow into inside container or container generates gas, When so that inner and outer air pressure is identical or air pressure inside is greater than external atmosphere pressure, which can bounce reinstatement and form safety The structure feature that button arches upward upwards reminds consumer alert at this time, and there may be quality security problems for the commodity, should not buy Or it is edible.On the other hand, the utility model is covered in unscrewing and is parallel to each other and equipped with two around tegmental wall between portion and anti-theft ring Bulge loop, constitute annular groove between two bulge loops, the bridge formation between the joint-cutting for being used to separate anti-theft ring and adjacent joint-cutting set It sets at the slot bottom of annular groove, in rotation unscrewing lid, joint-cutting and bridge formation are in the recess of groove and are not easy and grasp in this way The palm contacts of author, the spine after (fracture of building bridge) can be broken to avoid anti-theft ring injure palm.Meanwhile the utility model Slope inwardly to form the punching press mouth (for replacing the notch of traditional handicraft) of perforation tegmental wall using the tegmental wall on the upside of U-shaped joint-cutting, this The spine that sample rack bridge is formed when being broken can be squeezed by the tegmental wall on the upside of U-shaped joint-cutting in unscrewing lid rotation and be lost to a certain extent Its acuteness (or keeping the direction of spine consistent with rotation direction by squeezing) is gone, operator's palm is caused to greatly reduce A possibility that damage.In this way, the unscrewing that the utility model also solves the prior art cover during uncapping operator be easy by The problem of hurting substantially increases the safety of unscrewing lid in use.

Preferably, the diameter of safety knobs is 11 millimeters to 34 millimeters, the height that arches upward of safety knobs is 0.3 millimeter to 1 milli Rice and the depth for being lower than pit；The U-shaped joint-cutting is 6 to 12, is evenly arranged in the outer peripheral surface of unscrewing lid.

It is equipped with cutting preferably, building bridge, circumferential direction of the cutting along tegmental wall periphery is arranged, the quarter on the bridge formation Slot is one, and the cross section of the cutting is triangle, and the bottom edge of triangle is concordant with the lower side of punching press mouth, the cutting Depth capacity is the 40% to 60% of the tegmental wall thickness, and the width of rebate of cutting is 0.7 to 1.3 times of groove depth.Cutting is Remove what a part of tegmental wall material was formed using cutting way, different from by indent structures of formation such as extruding, cutting is deposited Make the wall thickness built bridge locally thinning on the one hand and structural strength reduces, on the other hand unscrews the stress at lid start-up time slot It concentrates, therefore the opening force of unscrewing lid can be greatly reduced, facilitate the purpose of unlatching.And the bottom edge of triangle cutting and punching press mouth Lower side it is concordant, the lower side outer of the rotation unscrewing post-rift punching press mouth of cover frame bridge in this way is one complete round, i.e., should Round outer does not have spine, and the post-rift spine that can avoid building bridge to the maximum extent injures palm.

Preferably, the peripheral part of gasket be integrally extended with downwards inner seal ring for being abutted with vessel port inner wall and The outer seal ring abutted with vessel port outer wall constitutes the seal groove that Open Side Down between inner seal ring and outer seal ring.This is practical Novel unscrewing covers the vessel port auxiliary section in the periphery of gasket and is equipped with inside and outside two sealing rings, constitutes between two sealing rings For being inserted in the seal groove of container finish, in this way after container finish enters seal groove, medial surface (the i.e. seal groove of outer seal ring Outside cell wall) outer wall of being close to vessel port forms external seal, the lateral surface (i.e. the inside cell wall of seal groove) of inner seal ring is tight The inner wall of patch vessel port forms interior sealing, and the slot bottom of seal groove is close on the oral area of container seal on constituting, in this way, unscrewing Lid has just carried out good sealing to container.

Preferably, being equipped with capaciting material groove with gasket corresponding above and below seal groove top surface, the groove bottom of the capaciting material groove is Arc-shaped, the center line of capaciting material groove cross section is overlapped with the center line of seal groove cross section, and the opening width of capaciting material groove is sealing The 55% to 75% of groove width, the depth of capaciting material groove are the 35% to 65% of capaciting material groove opening width；When unscrewing lid covered container mouth, outside The medial surface of sealing ring is close to the outer wall of vessel port, and the lateral surface of inner seal ring is close to the inner wall of vessel port, the slot bottom of seal groove It is close to edge on the oral area of container, the cross-sectional area of capaciting material groove reduces and its slot bottom is close to the lower surface of caping.The utility model exists Gasket top surface above seal groove is provided with a capaciting material groove, which is arranged in the one side that gasket is contacted with caping, When unscrewing lid covered container mouth, the reaction force generated when caping covers with downward pressure, gasket interference, and the anti-work Firmly a part can be deformed by capaciting material groove and be absorbed, therefore will not all be acted on container, to significantly reduce container Pressure-bearing, make unscrewing cover in capping procedure caused by container be collapsed, container anti-theft ring neck deformation the problems such as be greatly reduced.

Preferably, the height of inner seal ring cross section be greater than outer seal ring cross section height (i.e. inner seal ring is downward The length of extension is greater than the length that outer seal ring extends downwardly), the lateral surface lower part of inner seal ring is convexly equipped with interference ring, interference ring The distance between seal groove slot bottom is greater than the axial movement distance that unscrewing lid opens caping when building bridge fracture.The utility model exists The lateral surface lower part of inner seal ring is convexly equipped with interference ring, and interference ring is a raised annulus knot on the lateral surface of inner seal ring Structure, interference ring can play the role of strengthening sealing when the lateral surface of inner seal ring is close to the inner wall of vessel port, due to interference The axial movement distance of caping, that is, unscrewing when the distance between ring and seal groove slot bottom are greater than unscrewing lid opening anti-theft ring fracture At the initial stage that lid rotation is opened, when unscrewing lid moves a certain distance but unbroken anti-theft ring in the axial direction, interference ring is tight always Paste the inner wall of vessel port, it is ensured that the sealing between the unbroken preceding inner seal ring of anti-theft ring and the inner wall of vessel port, it thus can be with Avoid it is certain carry, storage product during touch unscrewing lid when cause unscrewing lid to a certain extent rotation (or pine It is dynamic), i.e., become smaller in the decrement for not being broken preceding gasket also of building bridge, leakproofness is caused to be deteriorated and greatly shorten shelf life of products Situation appearance.

Preferably, the upper section of the tapered wall, which is close to outer seal ring, constitutes outer seal ring press section, the unscrewing When lid covered container mouth, the outer seal ring is greater than inner seal ring to the pressure of vessel port inner wall to the pressure of vessel port outer wall, The apex angle of the tapered wall is 26 to 49 degree.The utility model is formed with up-small and down-big cyclic annular cone on the tegmental wall close to caping Shape wall, that is, the upper section for unscrewing lid is up-small and down-big structure, and the cross section of the section lid wall is oblique, is squeezed by tapered wall outer close Seal ring constitutes press section, so that its medial surface is close to the outer wall and outer seal ring of vessel port after the extruding of the outer seal ring portion of being squeezed Inner seal ring is greater than to the pressure of vessel port inner wall to the pressure of vessel port outer wall, this assures outer seal rings to vessel port Sealing, solve in traditional handicraft the poor sealing performance by way of caping and unilateral side (inside) sealing ring compress vessel port Problem simultaneously because the press section of the utility model is up-small and down-big pyramidal structure, therefore is unscrewed unscrewing lid when lid is opened and is held Deviate from easily from vessel port, avoids the shape for compressing vessel port in traditional handicraft by caping and bilateral (medial and lateral) sealing ring Formula will lead to unscrewing lid since the frictional force of bilateral generation is larger when opening and open difficult problem, in the premise for ensuring sealing Under facilitate unscrewing lid unlatching.Apex angle is the angle between the tapered wall of caping two sides, and apex angle is too small, and outer seal ring is to vessel port Lateral compression power it is excessive, be easy to cause unscrewing lid opening force it is excessive；Apex angle is excessive, then pressure of the outer seal ring to vessel port Power is too small, is easy although opening, sealing performance is poor.

Preferably, the medial surface of inner seal ring and gasket lower surface (do not extend downwardly at inner seal ring Gasket bottom surface) between by the transition of resistance to compression cambered surface connect, the radius of the resistance to compression cambered surface is inner seal ring cross-sectional height 0.7 to 1.3 times；The lower part of the ring-type tapered wall is circumferentially with the internal pressure liberation port of multiple inside punching presses along tegmental wall, and internal pressure is released The inside bending of tegmental wall for putting the lower side of mouth constitutes intilted bevel structure.Under the medial surface and gasket of inner seal ring Resistance to compression cambered surface is arranged between surface can significantly improve the anti-pressure ability of inner seal ring, strengthen interference ring to the close of vessel port inner wall Envelope effect.Internal pressure liberation port for when container inner pressure is excessive by container gas or liquid discharge in time, avoid container Interior pressure is excessive to cause unscrewing lid directly to fly out and cause serious consequence.

Preferably, the relief groove extended along seal groove, institute are equipped on the slot bottom of seal groove close to the side of inner seal ring The opening width for stating relief groove is the 11% to 24% of seal groove slot bottom width, and the depth of relief groove is seal groove slot bottom width 16% to 29%；The center line of the relief groove cross section and the center line of seal groove cross section are parallel to each other, the inside of relief groove (i.e. the inside cell wall of relief groove is by seal groove close to slot bottom on same cylindrical surface for inside cell wall at cell wall and seal groove slot bottom The inside cell wall at place, which extends, to be constituted), the groove bottom of relief groove is arc-shaped.The effect of relief groove is that the appropriate inner seal ring that reduces enters The resistance of vessel port, resistance is excessive when the presence due to interference ring and resistance to compression cambered surface being avoided to cause unscrewing lid covered container mouth, holds Cause gauffer at interference ring along excessive compression gasket on the oral area of device, serious damage is caused to the sealing performance of container Evil.Although the resistance for reducing resistance to compression cambered surface when can also reduce unscrewing lid covered container mouth, to the sealing performance shadow of interference ring Sound is larger, and relief groove, which is arranged, can be reduced to a minimum this influence, while avoid occurring gauffer at interference ring again, be Ideal technical solution；On the other hand, the cross section size of relief groove has larger impact to sealing performance, and relief groove is excessive, no But the sealing on container finish top is influenced, but also the sealing performance of interference ring can be reduced, it is therefore desirable to which control is reasonable at one In the range of.

Preferably, the lateral surface lower end of inner seal ring is equipped with guiding arc-shaped side, the upper edge of the guiding arc-shaped side and mistake Be full of ring lower edge connection.Guiding arc-shaped side plays guiding role when unscrewing lid cooperates with vessel port.

The beneficial effects of the utility model are: 1. it efficiently solve the prior art unscrewing lid lack product quality peace The problem that operator during uncapping is easy injury is covered in the unscrewing of full property prompting function and the prior art, can to consumer into Row Product quality and safety is reminded, and the safety of unscrewing lid in use is substantially increased.2. solving the prior art Unscrewing is covered be easy to cause container be collapsed, container anti-theft ring neck deformation to ask in capping procedure since caping pressure is excessive The problems such as topic, container be collapsed, container anti-theft ring neck deformation caused by covering unscrewing in capping procedure, is greatly reduced.3. solution The problem of unscrewing lid for the prior art of having determined is easy to appear leakproofness variation, and shelf life of products is caused to greatly shorten.This is practical new The turn-break type unscrewing lid of type has the characteristics that Product quality and safety prompting function, anti-theft sealing are good and easy to open, has Very high practical value.

Detailed description of the invention

Fig. 1 is a kind of structure sectional view for the turn-break type unscrewing lid that the utility model has safeguard construction；

Fig. 2 is a kind of partial structure sectional view of the utility model unscrewing lid；

Fig. 3 is another partial structure sectional view of the utility model unscrewing lid；

A kind of partial structure sectional view when Fig. 4 is the utility model unscrewing lid covered container mouth；

Another partial structure sectional view when Fig. 5 is the utility model unscrewing lid covered container mouth；

Fig. 6 is a kind of partial structure sectional view at the utility model unscrewing cover frame bridge；

A kind of stress schematic diagram when Fig. 7 is the utility model unscrewing lid covered container mouth；

Fig. 8 is that the utility model unscrews a kind of structure sectional view covered in working condition (negative pressure state).

In figure: 1. caping, 2. tegmental walls, 3. anti-theft rings, 4. gaskets, 5. vessel ports, 6. inner seal rings, 7. outer seal rings, 8. seal groove, 9. capaciting material grooves, 10. interference rings, 11. tapered walls, 12. press sections, 13. resistance to compression cambered surfaces, 14. relief grooves, 15. guiding Arc-shaped side, 16. internal pressure liberation ports, 17. build bridge, 18. bulge loops, 19. annular grooves, 20. U-shaped joint-cuttings, 21. punching press mouths, 22. quarters Slot, 23. pits, 24. safety knobs.

Specific embodiment

The embodiments of the present invention is further detailed below by way of examples and with reference to the accompanying drawings.

Embodiment 1

In embodiment 1 shown in Fig. 1, a kind of turn-break type unscrewing lid with safeguard construction, for the close of container finish Envelope, the unscrewing lid is including caping 1 and the cylindric tegmental wall 2 constituted, the lower surface of caping are extended downwardly by the outer rim of the caping Equipped with gasket 4, the peripheral part of the gasket is integrally extended with downwards for seeing Fig. 4 Fig. 5 with vessel port 5() inner wall abuts Inner seal ring 6 and the outer seal ring 7 abutted with vessel port outer wall, it is close to constitute that Open Side Down between inner seal ring and outer seal ring Sealing groove 8.Pit 23,0.6 millimeter of the depth of pit are formed on caping, the bottom surface of pit arches upward to form safety knobs 24 upwards, institute The pit and safety knobs stated are circle, and the diameter of safety knobs is 11 millimeters, and the height that arches upward of safety knobs is 0.3 millimeter；Tegmental wall Lower part be equipped with two be parallel to each other and between the bulge loop of tegmental wall 18, two bulge loops constitute annular groove 19, annular groove Slot bottom at along tegmental wall be circumferentially with 8 U-shaped joint-cuttings 20, U-shaped joint-cutting is evenly arranged in the outer peripheral surface of unscrewing lid, described U-shaped to cut The tegmental wall for sewing on side slopes inwardly to form the punching press mouth 21 of perforation tegmental wall, and the tegmental wall between adjacent punching press mouth constitutes bridge formation 17, punching The tegmental wall below mouth is pressed to constitute anti-theft ring 3, anti-theft ring is connect by the bridge formation with the tegmental wall above punching press mouth.

Up-small and down-big cyclic annular tapered wall 11 is formed on the tegmental wall of caping, the upper section of the tapered wall is close to outer Sealing ring constitutes outer seal ring press section 12, and when the described unscrewing lid covered container mouth, the outer seal ring is to vessel port outer wall Pressure be greater than inner seal ring to the pressure of vessel port inner wall, the apex angle of the tapered wall is 38 degree.On the bridge formation of the present embodiment Fig. 6 is seen equipped with cutting 22(), circumferential direction of the cutting along tegmental wall periphery is arranged, and the cutting on the bridge formation is one, described The cross section of cutting is triangle, and the bottom edge of triangle is concordant with the lower side of punching press mouth, and the depth capacity of the cutting is institute The 51% of tegmental wall thickness is stated, the width of rebate of cutting is 1 times of groove depth.The top of tegmental wall along tegmental wall be circumferentially with it is multiple to The internal pressure liberation port 16 of interior punching press, the inside bending of the tegmental wall of the lower side of internal pressure liberation port constitute intilted bevel structure.

Embodiment 2

In embodiment 2 shown in Fig. 2, capaciting material groove 9, the appearance material are equipped with gasket corresponding above and below seal groove top surface The groove bottom of slot be it is arc-shaped, the center line of capaciting material groove cross section is overlapped with the center line of seal groove cross section, and capaciting material groove is opened Mouth width degree is seal groove width 55%, and the depth of capaciting material groove is the 35% of capaciting material groove opening width.The present embodiment inner seal ring is horizontal The height in section is greater than the height of outer seal ring cross section, and the lateral surface lower part of inner seal ring is convexly equipped in interference ring 10(figure empty Line left part), the distance between interference ring and seal groove slot bottom are greater than the axial of caping when unscrewing lid opens bridge formation fracture and move Dynamic distance (i.e. the leakage angle of unscrewing lid is greater than the break corner of unscrewing lid anti-theft ring).The lateral surface lower end of inner seal ring is equipped with guiding The upper edge of arc-shaped side 15, the guiding arc-shaped side is connect with the lower edge of interference ring.(see figure 5) when unscrewing lid covered container mouth, institute The medial surface for stating outer seal ring is close to the outer wall of vessel port, and the lateral surface of inner seal ring is close to the inner wall of vessel port, seal groove Slot bottom is close to edge on the oral area of container, and the cross-sectional area of capaciting material groove reduces and its slot bottom is close to the lower surface of caping.The present embodiment 1.5 millimeters of the depth of pits, the diameters of safety knobs are 34 millimeters, and the height that arches upward of safety knobs is 1 millimeter, remaining and embodiment 1 is identical.

Embodiment 3

In embodiment 3 shown in Fig. 3, pass through resistance to compression cambered surface 13 between the medial surface and gasket lower surface of inner seal ring Transition connection, the radius of the resistance to compression cambered surface is 1 times of inner seal ring cross-sectional height.Close to interior sealing on the slot bottom of seal groove The side of ring is equipped with the relief groove 14 extended along seal groove, and the opening width of the relief groove is the 17% of seal groove slot bottom width, The depth of relief groove is the 22% of seal groove slot bottom width；In the center line of the relief groove cross section and seal groove cross section Heart line is parallel to each other, the inside cell wall at the inside cell wall of relief groove and seal groove slot bottom on same cylindrical surface, relief groove Groove bottom is arc-shaped.The opening width of capaciting material groove is seal groove width 75% in the present embodiment, and the depth of capaciting material groove is capaciting material groove The 65% of opening width, remaining is identical with embodiment 1 or embodiment 2.

The utility model is equipped with a pit at the top of unscrewing lid, is equipped with a upward arc in the bottom surface of pit and arches upward knot Structure, this arcuate configuration is in internal generation negative pressure after product vacuumizes or product heat-seal is cooling, in the work of external atmosphere pressure Under, which can sink to form downward concave surface (see figure 8), and within the shelf-life of product, which exists always. When the food spoilage that the seal failure of container causes air to flow into inside container or container generates gas, so that inner and outer air pressure phase When same or air pressure inside is greater than external atmosphere pressure, which can bounce reinstatement and form the knot that safety knobs arch upward upwards Structure feature reminds consumer alert at this time, and there may be quality security problems for the commodity, should not buy or eat.In addition, this Utility model is covered in unscrewing and is parallel to each other and between the bulge loop of tegmental wall, two bulge loops between portion and anti-theft ring equipped with two Annular groove is constituted, the bridge formation between the joint-cutting for being used to separate anti-theft ring and adjacent joint-cutting is arranged in the slot bottom of annular groove Place, in rotation unscrewing lid, joint-cutting and bridge formation are in the recess of groove and are not easy the palm contacts with operator in this way, can Palm is injured to avoid the spine after anti-theft ring fracture (fracture of building bridge).On the other hand, the utility model is using on U-shaped joint-cutting The tegmental wall of side slopes inwardly to form the punching press mouth (for replacing the notch of traditional handicraft) of perforation tegmental wall, shape when being broken of building bridge in this way At spine can be squeezed by the tegmental wall on the upside of U-shaped joint-cutting in unscrewing lid rotation and lose to a certain extent its acuteness (or Keep the direction of spine consistent with rotation direction by squeezing), to greatly reduce a possibility that causing damage to operator's palm. In this way, the utility model solves the problems, such as that the unscrewing of the prior art covers operator during uncapping and is easy injury, mention significantly The high safety of unscrewing lid in use.In addition, the vessel port in the periphery of gasket is covered in the unscrewing of the utility model Auxiliary section is equipped with inside and outside two sealing rings, and the seal groove for being inserted in container finish is constituted between two sealing rings, works as appearance in this way After device oral area enters seal groove, the outer wall that the medial surface of outer seal ring is close to vessel port forms external seal, the outside of inner seal ring The inner wall that vessel port is close in face forms interior sealing, and the slot bottom of seal groove is close to seal on constituting (see figure on the oral area of container 5, the compression section of gasket when the lap in figure is practical cooperation), in this way, unscrewing lid has just carried out well container Sealing；And gasket top surface of the utility model also above seal groove is provided with a capaciting material groove, which is arranged close Packing contacts one side with lid, when unscrewing lid covered container mouth, has downward pressure F1 when caping covers, gasket interference produces Raw reaction force F2(is shown in Fig. 7), and the reaction force a part can be deformed by capaciting material groove and be absorbed, therefore will not all be made With on container, to significantly reduce the pressure-bearing of container, container be collapsed caused by covering unscrewing in capping procedure, container are anti- The problems such as stealing ring neck deformation is greatly reduced.The utility model is convexly equipped with interference in the lateral surface lower part of inner seal ring simultaneously Ring, interference ring are a raised zonary structures on the lateral surface of inner seal ring, and interference ring is tight in the lateral surface of inner seal ring It can play the role of strengthening sealing when pasting the inner wall of vessel port, since the distance between interference ring and seal groove slot bottom are greater than rotation The axial movement distance of caping when opening anti-theft ring of uncapping is broken covers the initial stage that rotation is opened in unscrewing, when unscrewing is covered in axis When moving up a certain distance but unbroken anti-theft ring, the inner wall that interference ring is close to vessel port always (shows see Fig. 4, Fig. 4 State is the leakage critical state of container), it is ensured that the sealing between the unbroken preceding inner seal ring of anti-theft ring and the inner wall of vessel port, Thus can to avoid it is certain carry, storage product during touch unscrewing lid when cause unscrewing lid to a certain extent turn Dynamic (or loosening), i.e., the decrement of gasket becomes smaller before bridge formation is not broken also, and leakproofness is caused to be deteriorated and make shelf life of products The appearance of the situation greatly shortened.

In addition to the implementation, in the range disclosed in claims of the utility model and specification, this is practical Novel technical characteristic or technical data can be reselected and be combined, to constitute new embodiment, these are all these Field technical staff is without carrying out what creative work can be realized, therefore the implementation that these the utility model are not described in Example also should be regarded as specific embodiment of the utility model and be within the protection scope of the utility model.

Claims (10)

1. a kind of turn-break type with safeguard construction unscrews lid, the sealing for container finish, which is characterized in that the unscrewing lid The cylindric tegmental wall (2) constituted is extended downwardly including caping (1) and by the outer rim of the caping, the lower surface of the caping is equipped with close Packing (4) is formed with pit (23) on caping, and the bottom surface of pit arches upward to form safety knobs (24), the pit and peace upwards Full button is circle, and up-small and down-big cyclic annular tapered wall (11) is formed on the tegmental wall of caping, and the lower part of tegmental wall is equipped with two Item is parallel to each other and constitutes annular groove (19) between the bulge loop of tegmental wall (18), two bulge loops, at the slot bottom of annular groove Several U-shaped joint-cuttings (20) are circumferentially with along tegmental wall, the tegmental wall on the upside of the U-shaped joint-cutting slopes inwardly to form rushing for perforation tegmental wall It presses mouth (21), the tegmental wall between adjacent punching press mouth, which is constituted, builds bridge (17), and the tegmental wall below punching press mouth constitutes anti-theft ring (3), antitheft Ring is connect by the bridge formation with the tegmental wall above punching press mouth.

2. the turn-break type according to claim 1 with safeguard construction unscrews lid, which is characterized in that the safety knobs Diameter is 11 millimeters to 34 millimeters, depth of the height for 0.3 millimeter to 1 millimeter and lower than pit that arch upward of safety knobs；The U Type joint-cutting is 6 to 12, is evenly arranged in the outer peripheral surface of unscrewing lid.

3. the turn-break type according to claim 1 with safeguard construction unscrews lid, which is characterized in that set on the bridge formation Have cutting (22), circumferential direction of the cutting along tegmental wall periphery is arranged, and the cutting on the bridge formation is one, the cross of the cutting Section is triangle, and the bottom edge of triangle is concordant with the lower side of punching press mouth, and the depth capacity of the cutting is that the tegmental wall is thick The 40% to 60% of degree, the width of rebate of cutting is 0.7 to 1.3 times of groove depth.

4. the turn-break type according to claim 1 with safeguard construction unscrews lid, which is characterized in that outside the gasket Circumference is integrally extended with downwards the inner seal ring (6) for abutting with vessel port (5) inner wall and abuts with vessel port outer wall outer Sealing ring (7) constitutes the seal groove (8) that Open Side Down between inner seal ring and outer seal ring.

5. turn-break type according to claim 4 with safeguard construction unscrews lid, which is characterized in that with it is right above and below seal groove The gasket top surface answered is equipped with capaciting material groove (9), the groove bottom of the capaciting material groove be it is arc-shaped, the center line of capaciting material groove cross section with The center line of seal groove cross section is overlapped, and the opening width of capaciting material groove is seal groove width 55% to 75%, the depth of capaciting material groove It is the 35% to 65% of capaciting material groove opening width；When unscrewing lid covered container mouth, the medial surface of outer seal ring is close to the outer of vessel port Wall, the lateral surface of inner seal ring are close to the inner wall of vessel port, and the slot bottom of seal groove is close to edge on the oral area of container, the cross of capaciting material groove Sectional area reduces and its slot bottom is close to the lower surface of caping.

6. the turn-break type according to claim 4 with safeguard construction unscrews lid, which is characterized in that inner seal ring cross section Height be greater than the height of outer seal ring cross section, the lateral surface lower part of inner seal ring is convexly equipped with interference ring (10), interference ring with The distance between seal groove slot bottom is greater than the axial movement distance that unscrewing lid opens caping when building bridge fracture.

7. the turn-break type according to claim 1 with safeguard construction unscrews lid, which is characterized in that the tapered wall Upper section is close to outer seal ring and constitutes outer seal ring press section (12), when the described unscrewing lid covered container mouth, the outer seal ring Inner seal ring is greater than to the pressure of vessel port inner wall to the pressure of vessel port outer wall, the apex angle of the tapered wall is 26 to 49 degree； The U-shaped joint-cutting is 6 to 12, is evenly arranged in the outer peripheral surface of unscrewing lid.

8. the turn-break type according to claim 7 with safeguard construction unscrews lid, which is characterized in that the inside of inner seal ring It is connected between face and gasket lower surface by (13) transition of resistance to compression cambered surface, the radius of the resistance to compression cambered surface is that inner seal ring is transversal 0.7 to 1.3 times of face height；The lower part of the ring-type tapered wall is circumferentially with the internal pressure liberation port of multiple inside punching presses along tegmental wall (16), the inside bending of the tegmental wall of the lower side of internal pressure liberation port constitutes intilted bevel structure.

9. the turn-break type according to claim 8 with safeguard construction unscrews lid, which is characterized in that on the slot bottom of seal groove The relief groove (14) extended along seal groove is equipped with close to the side of inner seal ring, the opening width of the relief groove is seal groove slot The 11% to 24% of bottom width degree, the depth of relief groove are the 16% to 29% of seal groove slot bottom width；In the relief groove cross section Heart line and the center line of seal groove cross section are parallel to each other, and the inside cell wall and the inside cell wall at seal groove slot bottom of relief groove exist On same cylindrical surface, the groove bottom of relief groove is arc-shaped.

10. the turn-break type according to claim 4 with safeguard construction unscrews lid, which is characterized in that outside inner seal ring Side lower end is equipped with guiding arc-shaped side (15), and the upper edge of the guiding arc-shaped side is connect with the lower edge of interference ring.