CN209553873U - A kind of adaptable high leakproofness turns on lid - Google Patents

Abstract

The utility model discloses a kind of adaptable high leakproofness to turn on lid, the lower surface of caping is equipped with gasket, the peripheral part of gasket is integrally extended with downwards the inner seal ring and outer seal ring that two are arranged concentrically, the outer wall of inner seal ring and the inner wall of outer seal ring are obliquely installed, the V-shaped groove that Open Side Down is constituted between inner seal ring and outer seal ring, the opening angle α of the V-shaped groove is 30 to 40 degree, and the V-shaped groove slot bottom at caping is formed with arcuate bottom；The lower part of tegmental wall is equipped with anti-theft ring, and tegmental wall is connect by building bridge with anti-theft ring.What it efficiently solved the problems, such as the prior art turns on sealing cushion for cover there are poor sealing and guiding performance difference, can meet the leakproofness for turning on sealing cushion for cover and guiding performance requirement simultaneously, can adapt to the vessel port of various structures, have very high practical value.

Description

A kind of adaptable high leakproofness turns on lid

Technical field

The utility model relates to packing container technical fields, and in particular to the adaptable high leakproofness of one kind turns on lid.

Background technique

Foodsafety is always an industry major issue of concern, the good leakproofness of food container lid It can guarantee that food also has safety after storage.Material, the mated condition of shape and tank mouth (bottleneck) of lid gasket Determine the quality of leakproofness.Currently, common lid gasket mostly uses flat rubber mat, L-type pad or U-shaped pad.Flat rubber mat and tank After mouth cooperation sealed cans, there is compression interference guarantee sealing (see Figure 12) with rubber mat at the top of tank mouth, be referred to as closedtop in industry；L-type Pad has compression interference to guarantee sealing (see Figure 13), claims in industry at the top of tank mouth with after tank mouth cooperation sealed cans with inside and rubber mat Be closedtop+interior side seal；It is U-shaped pad with tank mouth cooperation sealed cans after, tank mouth top, outside, inside and rubber mat have compression interference (see Figure 14), sealing more preferably, is referred to as triple seal: closedtop+outer side seal+interior side seal in industry.High the same, the same sealed cans in tank Under parameter, three kinds of rubber mats can guarantee leakproofness, can be seen that from rubber mat decrement and open the U-shaped pad > L-type pad flat glue of > of torque Pad；And at tank height relatively low (being lower than the high 0.3mm or more of normal tank), under same sealed cans parameter, flat rubber mat and tank mouth are completely de- From sealing (closedtop) failure；L-type pad is detached from substantially with tank mouth, and closedtop failure, inside potting pad decrement is almost nil, can recognize For equivalent failure；Be detached from the top of U-shaped pad with tank mouth, inside and outside be also kept in contact with tank mouth, closedtop failure, inside and outside side seal can also It keeps；And when there are tank mouths it is non-round, bigger than normal or less than normal when, the seal compatibility of flat rubber mat is stronger, but does not guide function well Can, it is easy to cause lid to be inserted in center deviation larger, causes askew lid；Although L-type rubber mat and U-shaped rubber mat have certain interior side seal to guide Effect, but when that there are tank mouths is non-round, when tank mouth is bigger than normal or less than normal, easily causes upper shield and have some setbacks (tank mouth is not easily accessible rubber mat), draw Lid is broken when playing capping.In conclusion the flat rubber mat of the prior art, L-type pad or it is U-shaped pad under different operating conditions, not With there is a problem of in degree poor sealing or guiding performance difference.

On the other hand, turning on the bridge formation covered in the prior art is usually in rectangle, vertical with the anti-theft ring that covers is turned on to connect It connects, when rotating cover, the torsion (cross shear) generated by lid rotation of building bridge acts on fracture, i.e., only builds bridge disconnected It splits, turns on lid and be just able to rotate unlatching.This rectangle bridging structure connected vertically, after by the effect of biggish cross shear Material yield fracture, for breaking point (see Figure 11) substantially among bridge formation, the torsion needed when twisting off is larger, and lid is rotated further by after fracture The torsion that body needs becomes smaller suddenly, holds the hand of lid because having little time to remove power and be forced to follow one angle of lid quick rotation Degree, not only increase unlatching difficulty in this way, due to build bridge with notching edge substantially it is exposed outside, bridge formation twist off after will form it is more A sharp breaking point, parking follow the hand of lid quick rotation to be easy to be scratched (note: except anti-by the sharp object in anti-theft ring or body Steal on ring there are outside sharp object, there is also sharp objects for the mold seam crossing of certain plastics bodies), there is very big security risk.

Utility model content

The purpose of this utility model is that there are poor sealing and guiding performance are poor to solve the sealing cushion for cover of turning on of the prior art Problem provides the adaptable high leakproofness of one kind and turns on lid, can meet the leakproofness and guiding for turning on sealing cushion for cover simultaneously Property require.

The utility model another object is that turning on that cover required opening force during uncapping big for solve the prior art And operator is easy injured problem and provides the adaptable high leakproofness of one kind and turn on lid, required opening force is small and can be big Big raising, which is turned on, covers the safety in opening process.

The concrete scheme that the utility model uses to solve above-mentioned technical problem is a kind of adaptable high leakproofness torsion It uncaps, for the sealing of container finish, the lid of turning on includes caping and extends downwardly the cylinder constituted by the outer rim of the caping Shape tegmental wall, the lower surface of the caping be equipped with gasket, and the peripheral part of gasket is integrally extended with downwards two and is arranged concentrically Inner seal ring and outer seal ring, the outer wall of inner seal ring and the inner wall of outer seal ring are obliquely installed, inner seal ring and external seal The V-shaped groove that Open Side Down is constituted between ring, the opening angle α of the V-shaped groove is in 30 to 40 degree and inner and outer wall and V-shaped groove Angle between heart line is equal, and the V-shaped groove slot bottom at caping is formed with arcuate bottom, and the width of arcuate bottom is less than the container The wall thickness of oral area；The lower part of tegmental wall is equipped with anti-theft ring, and tegmental wall is connect by building bridge with anti-theft ring；The top of tegmental wall is along tegmental wall circumferential direction Internal pressure liberation port equipped with multiple inside punching presses, the inside bending of the tegmental wall of the lower side of internal pressure liberation port constitute intilted oblique Face structure.The turning on of the utility model covers periphery in gasket and vessel port auxiliary section is equipped with inside and outside two sealing rings, and two The V-shaped groove for being inserted in container finish is constituted between sealing ring, in this way after container finish enters V-shaped groove, outer seal ring it is interior The outer wall that wall is close to vessel port forms external seal, and the inner wall that the outer wall of inner seal ring is close to vessel port forms interior sealing, thus Vessel port can be sealed well, meanwhile, the V-shaped groove inner wall and outer wall being obliquely installed can play the entrance of vessel port To good guiding role, the vessel port of various structures can adapt to, there is good adaptability, solve the torsion of the prior art It uncaps poor sealing existing for gasket and guiding performance difference problem.On the other hand, due to the width of the utility model V-shaped groove arcuate bottom Degree is less than the wall thickness of container finish, and therefore, when turning on lid closed container oral area, arcuate bottom and the container finish of V-shaped groove are formed There is separate cavities (space between arcuate bottom and container finish), which will be between outer seal ring inner wall and vessel port outer wall Interior seal isolation between external seal and inner seal ring outer wall and vessel port inner wall, can be further improved gasket and vessel port Between sealing effect.

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 extends downwardly of outer seal ring), the outer wall of the inner wall of inner seal ring and outer seal ring is and caping Vertically, arc guide surface is equipped between the lower end of inside and outside sealing ring and the cell wall of V-shaped groove.The inner seal ring of the utility model And outer seal ring all has enough height, i.e., when turn on lid move a certain distance but unbroken anti-theft ring in the axial direction when, Inside and outside sealing ring have enough length fitting vessel port inside and outside wall, it is ensured that turn on lid do not open (anti-theft ring is unbroken) before Sealing between inside and outside sealing ring and the inside and outside wall of vessel port；Arc guide surface plays guiding when vessel port enters V-shaped groove and makees With.

Preferably, the height of inner seal ring cross section is identical as the height of outer seal ring cross section, inner seal ring it is interior Wall and the outer wall of outer seal ring are vertical with caping, are equipped with arc between the lower end of inside and outside sealing ring and the cell wall of V-shaped groove and lead To face, the two sides cell wall of the V-shaped groove is symmetrical structure.

Preferably, be formed with up-small and down-big cyclic annular tapered wall on the tegmental wall of caping, the tapered wall it is upper Section is close to outer seal ring and constitutes outer seal ring press section, described when turning on lid covered container mouth, and the outer seal ring is to container The pressure of mouth outer wall is greater than inner seal ring to the pressure of vessel port inner wall, and the apex angle of the tapered wall is 20 to 40 degree.This is practical It is formed with up-small and down-big cyclic annular tapered wall on the novel tegmental wall close to caping, that is, the upper section for turning on lid is up-small and down-big cone The cross section of shape structure, the section lid wall is oblique, squeezes outer seal ring by tapered wall and constitutes press section, so that outer seal ring Be squeezed its medial surface after portion squeezes be close to the outer wall of vessel port and outer seal ring the pressure of vessel port outer wall is greater than it is interior close Sealing of the seal ring to the pressure of vessel port inner wall, this assures outer seal ring to vessel port；Simultaneously because the utility model Press section be up-small and down-big pyramidal structure, therefore turn on lid open when turn on lid be easy from vessel port deviate from, avoid When opening due to the frictional force of bilateral generation by way of U-shaped pad compresses vessel port by caping and medial and lateral in traditional handicraft Larger will lead to turns on lid and opens difficult problem, turns on the unlatching of lid ensuring to facilitate under the premise of sealing.

Preferably, the lower part of tegmental wall is circumferentially with the notch of several strips along tegmental wall, the notch is through described Tegmental wall, the tegmental wall of suitable order constitutes the anti-theft ring, and the tegmental wall between adjacent cut constitutes the bridge formation, the frame Bridge is the wide structure being obliquely installed, on the basis of one end of the close caping of bridge formation, build bridge one end for being connect with anti-theft ring to Right side offset；Upper acute angle, the left side of bridge formation lower end and frame are formed between the right side of the bridge formation upper end and the notch on right side of building bridge Lower acute angle is formed between notch on the left of bridge.The utility model it the bridge formation connected between lid and anti-theft ring is designed to tilt Connection (whole assume diamond in shape of building bridge), forms upper acute angle between the right side of bridge formation upper end and the notch on right side of building bridge, bridge formation lower end The corner of acute angle under being formed between left side and the notch in left side of building bridge, upper acute angle and lower acute angle forms stress concentration point, so that on Acute angle and lower acute angle are easy to be torn in its corner.It turns on anti-theft ring when lid is opened to be stuck after rotating a low-angle, cover Body continues to rotate counterclockwise, and builds bridge and first draws to anti-theft ring upright position, and the top next built bridge is tilted to the right and is broken again, this The fracture of sample rack bridge needs a process, will not be broken suddenly as the bridge formation of the prior art.Furthermore it builds bridge due to molding At incline structure, deformation of only building bridge when starting to be straightened, required torsion is smaller, until the stress at bridge formation acute angle position is concentrated when being straightened Point, which makes to build bridge, to be started to crack, fracture completely of building bridge after being rotated further by, so bridge formation fracture process or a progressive formation, twist off Power is significantly less than existing scheme, therefore has pooling feature.

Preferably, the angle of the center line and horizontal plane built bridge is 40 to 70 degree；The connection of the bridge formation and upper acute angle Portion is formed with pre- breach, the circumferentially extending of the upper presplitting opening's edge tegmental wall and its opening is connected to notch, and upper pre- breach is covering Length in the circumferential direction of wall is the 10-20% of bridge formation width.Upper pre- breach is set with the interconnecting piece of upper acute angle building bridge, lid turns The top built bridge when dynamic is torn that required power is smaller, more favorably turns on the unlatching of lid.Meanwhile in the connection with upper acute angle of building bridge Upper pre- breach is arranged in portion, it can be ensured that the upper end of bridge formation is broken in advance, keeps the breaking point built bridge unanimously neat, upper due to bridge formation End fracture in advance, therefore post-rift residual section of building bridge all has stayed in anti-theft ring side, is conducive to the reuse of lid.

Lower pre- breach, the circumferential direction of the lower presplitting opening's edge tegmental wall are formed with the interconnecting piece of lower acute angle preferably, building bridge Extend and its opening is connected to notch, length of the lower pre- breach in the circumferential direction of tegmental wall is the 50-70% of upper pre- breach length.In Building bridge, it is more easy lid can be made to open with pre- breach under the setting of the interconnecting piece of lower acute angle, and the length with presplitting mouth at present is small In the length of upper pre- breach, post-rift residual section of building bridge can all stay in anti-theft ring side, be conducive to the repetition of lid It uses.In addition, the upper pre- breach and lower pre- breach of the utility model can be synchronous in punching press notch by improving mould structure It is formed, since upper pre- breach and lower pre- breach are small breach, will not influence the appearance for turning on lid.

Preferably, the top of tegmental wall is circumferentially with the internal pressure liberation port of multiple inside punching presses, internal pressure liberation port along tegmental wall The inside bending of tegmental wall of lower side constitute intilted bevel structure.Internal pressure liberation port is used for when container inner pressure is excessive By in container gas or liquid discharge in time, avoid container inner pressure it is excessive cause to turn on lid directly fly out and after causing seriously Fruit.

It is parallel to each other and is constituted between the bulge loop of tegmental wall, two bulge loops preferably, the lower part of tegmental wall is equipped with two Annular groove, the notch and bridge formation are arranged at the slot bottom of annular groove.The utility model is in lid lower part and anti-theft ring Between be equipped with two be parallel to each other and constitute annular groove between the bulge loop of tegmental wall, two bulge loops, will be used to separate antitheft Bridge formation between the notch and adjacent cut of ring is arranged at the slot bottom of annular groove, in this way notch and frame when lid is turned in rotation Bridge is in the recess of groove and is not easy the palm contacts with operator, after (fracture of building bridge) can be broken to avoid anti-theft ring Spine injure palm.In this way, the utility model solve the prior art turn on that cover required opening force during uncapping big And operator is easy injured problem, greatly facilitates the unlatching for turning on lid, improves to turn on and cover the safety in opening process.

The beneficial effects of the utility model are: there is sealing not in the sealing cushion for cover of turning on that it efficiently solves the prior art The poor problem of good and guiding performance, can adapt to the vessel port of various structures, can meet simultaneously the leakproofness for turning on sealing cushion for cover and Guiding performance requirement.What the utility model also solved the prior art simultaneously turns on that cover during uncapping required opening force big and grasp Author is easy injured problem, greatly improves to turn on and covers the safety in opening process.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram that the utility model turns on lid；

Fig. 2 is a kind of partial enlarged view that the utility model turns on lid；

Fig. 3 is another partial enlarged view that the utility model turns on lid；

Fig. 4 is another partial enlarged view that the utility model turns on lid；

Fig. 5 is another structural schematic diagram that the utility model turns on lid；

Fig. 6 is that the utility model turns on a kind of partial enlarged view at cover frame bridge；

Fig. 7 is that the utility model turns on another partial enlarged view at cover frame bridge；

Fig. 8 is that the utility model turns on a kind of partial enlarged view that initial stage is broken at cover frame bridge；

Fig. 9 is that the utility model turns on a kind of partial enlarged view that latter stage is broken at cover frame bridge；

Figure 10 is a kind of partial enlarged view when the utility model turns on fracture at cover frame bridge；

Figure 11 is a kind of partial enlarged view when the prior art turns on fracture at cover frame bridge；

Figure 12 is a kind of partial enlarged view when the prior art turns on lid flat rubber mat closed container mouth；

Figure 13 is a kind of partial enlarged view when the prior art turns on lid L-type pad closed container mouth；

Figure 14 is a kind of partial enlarged view when the prior art turns on lid U-shaped pad normal closed container mouth；

Figure 15 is a kind of partial enlarged view when the utility model turns on sealing cushion for cover normal closed container mouth；

Figure 16 be the prior art turn on cover it is U-shaped pad closed container mouth when a kind of partial enlarged view (vessel port it is relatively low 0.3 milli When rice)；

Figure 17 is that (vessel port is relatively low for a kind of partial enlarged view when the utility model turns on sealing cushion for cover closed container mouth At 0.3 millimeter)；

Figure 18 be the prior art turn on cover it is U-shaped pad closed container mouth when a kind of partial enlarged view (vessel port it is relatively low 0.5 milli When rice)；

Figure 19 is that (vessel port is relatively low for a kind of partial enlarged view when the utility model turns on sealing cushion for cover closed container mouth At 0.5 millimeter)；

Figure 20 be the prior art turn on cover it is U-shaped pad closed container mouth when a kind of partial enlarged view (vessel port unilateral side is bigger than normal At 0.15 millimeter)；

Figure 21 is that (vessel port is unilateral partially for a kind of partial enlarged view when the utility model turns on sealing cushion for cover closed container mouth At big 0.15 millimeter)；

Figure 22 be the prior art turn on cover it is U-shaped pad closed container mouth when a kind of partial enlarged view (vessel port unilateral side is less than normal At 0.2 millimeter)；

Figure 23 is that (vessel port is unilateral partially for a kind of partial enlarged view when the utility model turns on sealing cushion for cover closed container mouth At small 0.2 millimeter)；

Figure 24 be the prior art turn on cover it is U-shaped pad closed container mouth when a kind of partial enlarged view (vessel port enters sealing When pad)；

Figure 25 is that (vessel port enters close for a kind of partial enlarged view when the utility model turns on sealing cushion for cover closed container mouth When packing).

In figure: 1. caping, 2. tegmental walls, 3. gaskets, 4. inner seal rings, 5. outer seal rings, the outer wall of 6. inner seal rings, 7. the inner wall of outer seal ring, 8.V shape slot, 9. arcuate bottoms, 10. container finish, 11. notch, 12. anti-theft rings, 13. build bridge, and 14. The inner wall of inner seal ring, the outer wall of 15. outer seal rings, 16. arc guide surfaces, 17. cyclic annular tapered walls, 18. outer seal rings squeeze Portion, acute angle on 19., 20. lower acute angles, pre- breach on 21., pre- breach under 22., 23. internal pressure liberation ports, 24. bulge loops, 25. annulars Groove, 26. separate cavities.

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 adaptable high leakproofness turns on lid, for the sealing of container finish, It is described to turn on lid including caping 1 and extend downwardly the cylindric tegmental wall 2 constituted, the lower surface of the caping by the outer rim of the caping Equipped with gasket 3, the peripheral part of gasket is integrally extended with downwards two inner seal rings being arranged concentrically 4 and outer seal ring 5, interior The outer wall 6 of sealing ring and the inner wall 7 of outer seal ring are obliquely installed (see figure 2), constitute and open between inner seal ring and outer seal ring The downward V-shaped groove 8 of mouth, angle of the opening angle α of the V-shaped groove between 30 degree and inner and outer wall and V-shaped groove center line Equal, the V-shaped groove slot bottom at caping is formed with arcuate bottom 9, and the width of arcuate bottom is less than the wall thickness of the container finish 10, When turning on the gasket closed container oral area of lid, the arcuate bottom of V-shaped groove and container finish be formed with separate cavities 26(arcuate bottom with Space between container finish, sees Figure 15, Figure 17, Figure 19 and Figure 21), the separate cavities are by outer seal ring inner wall and vessel port outer wall Between external seal and inner seal ring outer wall and vessel port inner wall between interior seal isolation.The present embodiment inner seal ring cross section Height be greater than the height of outer seal ring cross section, the outer wall 15 of the inner wall 14 of inner seal ring and outer seal ring hangs down with caping Directly, arc guide surface 16 is equipped between the lower end of inside and outside sealing ring and the cell wall of V-shaped groove.The lower part of the tegmental wall is along tegmental wall It is circumferentially with the notch 11 of several strips, the notch runs through the tegmental wall, and the tegmental wall composition of suitable order turns on lid Anti-theft ring 12, the tegmental wall between adjacent cut, which is constituted, builds bridge 13, and the anti-theft ring is connected by building bridge with the tegmental wall above notch It connects.The top of tegmental wall is circumferentially with the internal pressure liberation port 23 of multiple inside punching presses, the lid of the lower side of internal pressure liberation port along tegmental wall The inside bending of wall constitutes intilted bevel structure.

Embodiment 2

In embodiment 2 shown in Fig. 3, the height of inner seal ring cross section is identical as the height of outer seal ring cross section, The inner wall of inner seal ring and the outer wall of outer seal ring are vertical with caping, between the lower end of inside and outside sealing ring and the cell wall of V-shaped groove It is equipped with arc guide surface, the opening angle α of the V-shaped groove is 40 degree, and the two sides cell wall of the V-shaped groove is symmetrical structure, Remaining and embodiment 1 is identical.

Embodiment 3

In embodiment 3 shown in Fig. 4, up-small and down-big cyclic annular tapered wall 17, institute are formed on the tegmental wall of caping The upper section of the tapered wall stated is close to outer seal ring and constitutes outer seal ring press section 18, described when turning on lid covered container mouth, institute It states outer seal ring and 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 20 to 40 degree (the present embodiment is 28 degree), remaining is identical with embodiment 1 or embodiment 2.

Embodiment 4

In the embodiment 4 shown in Fig. 5 and 6, build bridge as the wide structure being obliquely installed, with the one of the close caping of bridge formation On the basis of end, one end connecting with anti-theft ring of building bridge deviates to the right；The notch on the right side of the bridge formation upper end and right side of building bridge Between form upper acute angle 19, lower acute angle 20 is formed between the left side of bridge formation lower end and the notch in left side of building bridge.The center line of bridge formation Angle with horizontal plane is 40 to 70 degree (the present embodiment is 50 degree)；The lower part of tegmental wall is equipped with two and is parallel to each other and around lid The bulge loop 24 of wall constitutes annular groove 25 between two bulge loops, and the notch and bridge formation are arranged at the slot bottom of annular groove, Remaining is identical with embodiment 1 or embodiment 2 or embodiment 3.

Embodiment 5

In embodiment 5 shown in Fig. 7, the bridge formation and the interconnecting piece of upper acute angle are formed with pre- breach 21, it is described on The circumferentially extending of presplitting opening's edge tegmental wall and its opening is connected to notch, length of the upper pre- breach in the circumferential direction of tegmental wall be build bridge it is wide The 16% of degree；Build bridge and the interconnecting piece of lower acute angle be formed with lower pre- breach 22, the circumferentially extending of the lower presplitting opening's edge tegmental wall and its Opening be connected to notch, and length of the lower pre- breach in the circumferential direction of tegmental wall is the 58% of upper pre- breach length, remaining and embodiment 4 It is identical.

The turning on of the utility model covers periphery in gasket and vessel port auxiliary section is equipped with inside and outside two sealing rings, and two The V-shaped groove for being inserted in container finish is constituted between sealing ring, in this way after container finish enters V-shaped groove, outer seal ring it is interior The outer wall that wall is close to vessel port forms external seal, and the inner wall that the outer wall of inner seal ring is close to vessel port forms interior sealing, thus Vessel port can be sealed well (see Figure 15).

When vessel port is relatively low (relatively low 0.3 millimeter of vessel port in figure), the sealing structure (see Figure 17) of the utility model with Preferable U-shaped pad (see Figure 16) structure of sealing performance is compared in the prior art, has more seal compression (the utility model Seal compression area be 0.1 square millimeter, the seal compression area of U-shaped pad is 0.03 square millimeter), thus have better Leakproofness.

When vessel port is 0.5 millimeter relatively low, the sealing structure (see Figure 19) of the utility model and leakproofness in the prior art Preferable U-shaped pad (see Figure 18) structure of energy is compared, and the V-shaped groove two sides of the utility model and vessel port still have a small amount of contact surface, It and is that only with vessel port there is micro contact in unilateral side to U-shaped pad.

When vessel port is 0.15 millimeter bigger than normal unilateral, the sealing structure (see Figure 21) of the utility model with it is close in the prior art Preferable U-shaped pad (see Figure 20) structure of sealing property is compared, and still has a small amount of contact with vessel port on the inside of the V-shaped groove of the utility model Face, outer side seal decrement increase；And it is the seal failure on the inside of U-shaped pad with vessel port, outer side seal decrement increases.Here The unilateral situation bigger than normal for referring to that vessel port diameter is bigger than normal or vessel port offsets to one side of vessel port.

When gasket closed container mouth, the situation less than normal for vessel port (when 0.2 millimeter less than normal unilateral), this is practical new The sealing structure (see Figure 23) of type, can from figure compared with preferable U-shaped pad (see Figure 22) structure of sealing performance in the prior art To find out, the resistance that the utility model V-shaped groove enters vessel port is smaller；And the U-lag resistance of U-shaped pad is larger.For vessel port Situation (when 0.2 millimeter bigger than normal unilateral) bigger than normal, the sealing structure (see Figure 25) of the utility model and leakproofness in the prior art Preferable U-shaped pad (see Figure 24) structure of energy is compared, it can be seen from the figure that the left and right sides of the utility model V-shaped groove is to appearance There are guiding function, vessel ports can easily enter V-shaped groove for device mouth；And U-shaped pad only has unilateral side there are guiding function, gasket seals " askew lid " phenomenon is easy to appear when closing vessel port.

In conclusion the utility model gasket structure is compared with the gasket structure of the prior art, have preferably close Envelope property and sealing guiding performance, can adapt to the vessel port of various structures, have good adaptability, solve the torsion of the prior art It uncaps poor sealing existing for gasket and guiding performance difference problem.Simultaneously as the width of the utility model V-shaped groove arcuate bottom is small In the wall thickness of container finish, therefore, when turning on lid closed container oral area, the arcuate bottom of V-shaped groove and container finish be formed with every From chamber, the separate cavities are by the external seal and inner seal ring outer wall and vessel port inner wall between outer seal ring inner wall and vessel port outer wall Between interior seal isolation, can be further improved the sealing effect between gasket and vessel port.

On the other hand, the bridge formation connected between lid and anti-theft ring is designed to inclination connection (diamond shape knot by the utility model Structure), inclined direction is top lower rightward to the left, turns on anti-theft ring when lid is opened and is stuck after rotating a low-angle, covers Body continues to rotate counterclockwise, and building bridge is straightened the upper pre- breach of rear upper end and first tears, breach extended length (see figure 8), lid after It is continuous to rotate counterclockwise, the upper end Right deviation of bridge formation and upper pre- breach length further lengthens (see figure 9), until bridge formation upper end is completely disconnected It splits, the notch connection of bridge formation two sides, post-rift residual section of building bridge all has stayed in anti-theft ring side (see figure 10).This is practical new The bridge formation fracture process of type is a progressive formation, and twist-off force is significantly less than existing scheme, therefore has pooling feature.Its Secondary, the utility model is equipped with two between lid lower part and anti-theft ring and is parallel to each other and around the bulge loop of tegmental wall, two bulge loops Between constitute annular groove, the slot that will be used to separate the bridge formation between the notch and adjacent cut of anti-theft ring annular groove is set Bottom, when lid is turned in rotation, notch and bridge formation are in the recess of groove and are not easy the palm contacts with operator in this way, Spine after (fracture of building bridge) can be broken to avoid anti-theft ring injures palm, improves to turn on and covers the safety in opening process Property.

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 (8)

1. a kind of adaptable high leakproofness turns on lid, the sealing for container finish, which is characterized in that described to turn on lid packet It includes caping (1) and extends downwardly the cylindric tegmental wall (2) constituted by the outer rim of the caping, the lower surface of the caping is equipped with sealing It pads (3), the peripheral part of gasket is integrally extended with downwards two inner seal rings being arranged concentrically (4) and outer seal ring (5), interior close The outer wall (6) of seal ring is obliquely installed with the inner wall (7) of outer seal ring, and Open Side Down for composition between inner seal ring and outer seal ring V-shaped groove (8), the opening angle α of the V-shaped groove is 30 to 40 degree and the angle between inner and outer wall and V-shaped groove center line Equal, the V-shaped groove slot bottom at caping is formed with arcuate bottom (9), and the width of arcuate bottom is less than the container finish (10) Wall thickness；The lower part of tegmental wall is equipped with anti-theft ring (12), and tegmental wall is connect by bridge formation (13) with anti-theft ring；The top of tegmental wall is along tegmental wall week To the internal pressure liberation port (23) for being equipped with multiple inside punching presses, the inside bending of the tegmental wall of the lower side of internal pressure liberation port constitutes lean-in Oblique bevel structure.

2. adaptable high leakproofness according to claim 1 turns on lid, which is characterized in that inner seal ring cross section Height is greater than the height of outer seal ring cross section, and the inner wall (14) of inner seal ring and the outer wall (15) of outer seal ring hang down with caping Directly, arc guide surface (16) are equipped between the lower end of inside and outside sealing ring and the cell wall of V-shaped groove.

3. adaptable high leakproofness according to claim 1 turns on lid, which is characterized in that inner seal ring cross section Height is identical as the height of outer seal ring cross section, and the inner wall of inner seal ring and the outer wall of outer seal ring are vertical with caping, interior, Arc guide surface is equipped between the lower end of outer seal ring and the cell wall of V-shaped groove, the two sides cell wall of the V-shaped groove is symmetrical junction Structure.

4. adaptable high leakproofness according to claim 1 turns on lid, which is characterized in that on the tegmental wall of caping It is formed with up-small and down-big cyclic annular tapered wall (17), the upper section of the tapered wall is close to outer seal ring and constitutes outer seal ring extruding Portion (18), described when turning on lid covered container mouth, the outer seal ring is greater than inner seal ring pair to the pressure of vessel port outer wall The pressure of vessel port inner wall, the apex angle of the tapered wall are 20 to 40 degree.

5. adaptable high leakproofness according to claim 1 turns on lid, which is characterized in that the lower part edge of the tegmental wall Tegmental wall is circumferentially with the notch (11) of several strips, and the notch runs through the tegmental wall, and the tegmental wall of suitable order is constituted The anti-theft ring, the tegmental wall between adjacent cut constitute the bridge formation, described to build bridge as the wide structure being obliquely installed, with On the basis of the one end for the close caping built bridge, one end connecting with anti-theft ring of building bridge deviates to the right；The right side of the bridge formation upper end It is formed upper acute angle (19) between side and the notch on right side of building bridge, under being formed between the left side of bridge formation lower end and the notch in left side of building bridge Acute angle (20).

6. adaptable high leakproofness according to claim 5 turns on lid, which is characterized in that the center line and water of bridge formation The angle of plane is 40 to 70 degree；The interconnecting piece of the bridge formation and upper acute angle is formed with pre- breach (21), the upper pre- breach Circumferentially extending and its opening along tegmental wall are connected to notch, and length of the upper pre- breach in the circumferential direction of tegmental wall is bridge formation width 10-20%。

7. adaptable high leakproofness according to claim 5 or 6 turns on lid, which is characterized in that build bridge and lower acute angle Interconnecting piece be formed with lower pre- breach (22), the circumferentially extending of the lower presplitting opening's edge tegmental wall and its opening is connected to notch, under Length of the pre- breach in the circumferential direction of tegmental wall is the 50-70% of upper pre- breach length.

8. adaptable high leakproofness according to claim 5 or 6 turns on lid, which is characterized in that the lower part of tegmental wall is set Have two be parallel to each other and between the bulge loop of tegmental wall (24), two bulge loops constitute annular groove (25), the notch and Bridge formation is arranged at the slot bottom of annular groove.