CN1163850A - Easy-open can end - Google Patents
Easy-open can end Download PDFInfo
- Publication number
- CN1163850A CN1163850A CN 97102424 CN97102424A CN1163850A CN 1163850 A CN1163850 A CN 1163850A CN 97102424 CN97102424 CN 97102424 CN 97102424 A CN97102424 A CN 97102424A CN 1163850 A CN1163850 A CN 1163850A
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- CN
- China
- Prior art keywords
- cover plate
- corbel back
- back slab
- mentioned
- rake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Containers Opened By Tearing Frangible Portions (AREA)
Abstract
An easy-to-open can lid 1, a score 4 is broken by a tab 6 and a breaking opening piece 10 is folded over a rear face of a panel 3 in a state that a part of it is connected to the panel. At a tip 13 of the tab 6, a slant part 17 which gradually separates from the panel 3 with base end at a vicinity of a rivet 5 and reaches the head end and a panel butting part 18 which curls from the head end of the slant part 17 toward the panel 3 and further reaches the vicinity of the rivet 5 along the panel 3. Intensity of primers top of the plate is raised and even the lid becomes smaller in diameter, it can be easily opened.
Description
The present invention relates to open easily tinned drink and drink the cover of pop can that mouth waits flap.
The cover of the beverage can of beverages such as splendid attire beer, coffee beverage, soda and fruit drink adopts cover of pop can usually.A kind of as cover of pop can, so-called check rod pull type cover is on record: when the pull-up corbel back slab, make and carve the open loop shape opening be located on the cover and break with indentation, even at this moment cover is opened, the opening sheet that breaks that is produced also can be connected on the cover and be pushed in the jar, because corbel back slab is fixed on the cover with rivet, so it can all not separate with cover yet.
This cover is on the cover board carved from top to the terminal according to the shape that forms opening portion and is provided with continuous indentation, in addition, also is provided with by this indentation and surrounds and form the opening sheet that breaks that breaks apart notch portion.Because the top and the terminal of this indentation do not connect together, and have certain intervals between them, so when this indentation broke, the opening sheet that breaks still was in the state that connects together with cover plate.
Breaking of this indentation is to be undertaken by the non-detachable corbel back slab that is installed in rivet above the cover plate.Break apart notch portion in order to open, available finger hook stays in the grip portions that the corbel back slab rearward end is processed to form, along this corbel back slab of direction pull-up from cover plate.For this reason, the tip edge with this corbel back slab is that fulcrum lifts rivet earlier, and the tip edge of this corbel back slab is pressed and broken apart notch portion simultaneously.So just with the rivet side with break apart direction that the notch portion side deviates from mutually near the indentation the rivet torn by force, the initial stage breaks and is carried out.
Secondly, when further lifting the grip portions of corbel back slab, the top end part of corbel back slab is pressed the above-mentioned opening sheet that breaks towards the interior side direction of cover plate.At this moment, fulcrum moves on the rivet, and the top end part of corbel back slab is pressed the opening sheet that breaks.So, the above-mentioned opening sheet that breaks folds into the inboard of cover plate with the state that links to each other with cover plate, and the flap of cover plate is opened.
, popular in recent years such a case: the oral area of cover is installed, is adopted the method processing of neck-in, along with this jar use, the external diameter of cover reduces thereupon, and the material of cover is cut down thereupon, and cost decreases.Dwindling of this cover external diameter causes the cover plate reduction of area, also diminishes so the shape of corbel back slab on the cover board is set.And under the situation that the corbel back slab shape diminishes, in general, the interval of grip portions and rivet shortens, and it is difficult that opening becomes.Moreover, if to cut down material is purpose, adopt relatively thinner materials processing corbel back slab, though the processing of corbel back slab is become easily, but then, the intensity of corbel back slab reduces, when particularly opening is operated, top end part at corbel back slab produces distortion, is difficult to when lifting grip portions disrupture force is passed to top end part effectively, and this situation is inappropriate.
So just consider the intensity of the top end part 41 (as shown in Figure 6) of raising corbel back slab 40.Promptly shown in Fig. 7 (a), near the part (being close to cover plate part 43) of turning back setting on the top end part 41 of corbel back slab 40 extends to rivet 42 is improved the intensity of the top end part 41 of corbel back slab 40.Describe the formation of this corbel back slab 40 in detail, then as shown in Figure 6, be processed with grip portions 44, roughly in the centre of corbel back slab 40 in the rearward end of corbel back slab 40, be provided with the tabular tongue piece 46 that is formed by " " font joint-cutting 45, this tongue piece 46 extends to top end part always.On this tongue piece 46, be processed with the rivet hole 47 that inserts rivet 42 and fixed.In addition, shown in Fig. 7 (a), the top end part 41 of corbel back slab 40 have prolong part 48 be close to cover plate part 43, wherein prolong part and continue up to top 49 along the direction that is parallel to cover plate 50, be close to cover plate part 43 and prolong tongue piece 46 is curled, extends to along cover plate 50 on border from the top 49 that part 48 to cover plate 50 1 sides from this from the boundary of top end part 41 and tongue piece 46.In addition,, determined the border of top end part 41 with the tongue piece 46 of corbel back slab 40 thus, will form upright to the above-mentioned bigger step portion 51 that part 48 of prolonging by prolonging the top end part 41 that cover plate part 43 forms corbel back slab 40 of being close to that part 48.
, this corbel back slab 40 is owing to have above-mentioned bigger step portion 51.Shown in Fig. 7 (b), when up lifting grip portions 44 during pull-up rivet 42, step portion 51 easy deformation, should give the top 49 of corbel back slab 40 so that tear the disrupture force of indentation 52, distortion by step portion 51 absorbs, and breaks really in order to make indentation 52, needs bigger disrupture force, cause the opening performance to become poorer, this situation is inappropriate.
For overcoming this rough sledding, the intensity that the purpose of this invention is to provide a kind of corbel back slab top is improved, the also cover of pop can easily of opening even the external diameter of cover diminishes.
In order to reach this purpose, cover of pop can of the present invention comprises cover plate, indentation, breaks apart oral area, corbel back slab.Wherein indentation is carved according to the shape of the opening that breaks and is located on the above-mentioned cover plate, and its top and terminal room form at interval, and indentation extends to this terminal from this top always; Breaking apart oral area is formed by above-mentioned indentation encirclement; Corbel back slab has in the face of this top ends and grip part that breaks apart oral area is a rearward end, and this corbel back slab is fixed on above the cover plate with rivet.Cover of pop can is under the effect of this corbel back slab, Yi Bian tear indentation, Yi Bian press the above-mentioned oral area that breaks apart towards the interior side direction of cover plate, simultaneously, the part of the opening sheet that breaks that is formed by the opening effect folds into the inboard of cover plate with the state that links to each other with cover plate.This cover of pop can is characterised in that, above-mentioned corbel back slab has rake and is close to cover plate portion in top ends, wherein this rake is that cardinal extremity extends to the top away from cover plate gradually with near the end the rivet, this is close to cover plate portion and curls from the top of this rake to cover plate one side, extend to rivet along cover plate again near.
According to the present invention, be provided with above-mentioned rake in the top ends of above-mentioned corbel back slab, be provided with top from this rake simultaneously near the cover plate portion of being close to the rivet, owing to adopt a kind of like this structure, near the intensity the rivet is improved.Be the effect that above-mentioned corbel back slab supplies to help above-mentioned rake, can greatly dwindle the step that near the sloping portion cardinal extremity rivet forms, thereby can prevent distortion in the cardinal extremity part of this rake.Because such distortion is prevented that the disrupture force that gives the corbel back slab top end part from can pass to indentation effectively, thereby just can tear indentation with smaller power.Therefore, the present invention can provide a kind of such cover of pop can: along with the miniaturization of cover, corbel back slab promptly uses relatively thinner materials processing to become very little shape, and under the effect of high-intensity corbel back slab top end part, the flap of pop can also can be easy to open.
In addition, in the present invention, the above-mentioned cover plate portion of being close to has return portion, and this return portion is that near the end edge portion that is positioned at the rivet is formed to above-mentioned rake one side is folding, it is close to the lower surface of this rake and is close between the upper surface of cover plate portion, and the base end part of sloping portion is played strengthening action.
Under the effect of this return portion, the base end part of above-mentioned rake can be by this return portion, keep the state that overlaps with the cover plate portion of being close to.For this reason, in the opening operation of corbel back slab, when the pull-up grip part,, thereby can prevent that the cardinal extremity of sloping portion partly is out of shape because return portion is kept the state of being close to the base end part phase-splitting of rake.
The method for making of above-mentioned corbel back slab is as follows: at first carry out punch process on the strip metal sheet, after being processed into the shape of regulation, shear one by one from the strip metal sheet again.Though residual shearing projection on the corbel back slab of shearing, the present invention makes this shearing projection be positioned at corbel back slab top one side, has avoided on the grip part of corbel back slab processing to shear projection, and the operating characteristic of grip part is improved.Therefore, the above-mentioned cover plate portion of being close to processes with a pair of tongue of turning back, this to the tongue of turning back from the top of above-mentioned rake near cover plate one side is curled, is extended to rivet along cover plate again; Above-mentioned shearing projection is arranged on two and turns back between the root of tongue, is to curl to the inside from the top of above-mentioned rake to form.In view of the above, above-mentioned shearing projection is between the two rigidity declines of turning back and also can avoid top end part between the tongue.Moreover, can not stretch to the outside from the corbel back slab top owing to shear projection, so open when holding jar behind the jar and having a drink, can not produce uncomfortable feeling yet.
The simple declaration of drawing.
Fig. 1 is the planar view of the cover of an example of the present invention.
Fig. 2 is the cutaway view along the II-II line of Fig. 1.
(a) is the planar view of the corbel back slab of this example among Fig. 3, (b) is the upward view of the corbel back slab shown in (a).
Fig. 4 is the instruction diagram that the expression cover breaks apart the journey of making a slip of the tongue.
(a) is the upward view of the corbel back slab of other example among Fig. 5, (b) is the cross sectional illustration figure of this corbel back slab.
Fig. 6 is the planar view of existing corbel back slab.
Fig. 7 is that existing corbel back slab tears the instruction diagram of opening this process of flap.
Below be the desirable a kind of example of base description the present invention with the drawing.
As shown in Figures 1 and 2, cover 1 has flanging with flanging part 2, have cover plate 3 in the circle that this flanging part 2 is surrounded at its periphery.On this cover plate 3, be carved with the indentation 4 that is provided with for the flap of opening cover 1, corbel back slab 6 by rivet 5 be fixed on this cover plate 3 above.
As shown in Figure 1, indentation 4 is by the shape setting of the opening that breaks, it top 7 and terminal 8 between have at interval 9, indentation 47 continues up to terminal 8 from top, is surrounded by this indentation 4, has formed the substantially oblong-shaped oral area 10 that breaks apart.
Shown in Fig. 3 (a) and 3 (b), have grip part 11 in the rearward end of corbel back slab 6, roughly in the centre of corbel back slab 6, have the tongue piece 14 that is separated and extend to corbel back slab 6 top ends 13 by set " " font joint-cutting 12.On this tongue piece 14, be processed with the rivet hole 15 that can insert rivet 5 (with reference to Fig. 2), collapse by pressure and insert rivet 5 in this rivet hole 15, corbel back slab 6 just has been fixed on the cover plate 3.In addition, on this draws anti-6 top ends 13, be processed to form rake 17, this rake 17 is a cardinal extremity with the top ends 13 of corbel back slab 6 and the border between near the tongue piece 14 the rivet 5, extends to the top 16 of corbel back slab 6 gradually together away from cover plate 3.Rely on this sloping portion 17 can greatly dwindle near the ladder 17a that forms the rivet 5.And the top ends 13 of this corbel back slab 6 has the cover plate portion 18 of being close to that is made up of a pair of tongue 18a that turns back, and this curls, extends to along cover plate 3 near the boundary position of the tongue piece 14 rivet 5 to cover plate 3 one sides from the top 16 of this sloping portion 17 to the tongue 18a that turns back.
Be close in the cover plate portion 18 at this, have with near that part of folding return portion 19 that forms that is positioned at the rivet 5.This return portion 19 is between rake 17 and be close between the cover plate part 18, and it makes rake 17 and be close to cover plate portion 18 and couples together near rivet 5.
About the manufacturing process of this corbel back slab 6, though do not show in the drawings, after the machine-shaping, it is on the metallic strip metal sheet that its part is connected the corbel back slab material, in the time of on will being installed in cover plate 3, then cutting off this connecting portion and makes it to separate with the strip metal sheet.At this moment, residual projection 21 (with reference to Fig. 3) between the root of tongue 18a of turning back, is stretched from the outside of corbel back slab 6 for not making it by cutting off connecting bridge, on corbel back slab 6 it is involved in the inboard from the outside.So, though projection 21 is arranged on corbel back slab top one side, it can not stretched from the outside of corbel back slab 6, so when tearing indentation and opening flap, this projection 21 can not stretch to drinks mouth, drinking person can not produce uncomfortable feeling.In addition, owing to need not be arranged on such projection 21 on the grip part 11, when with grip part 11 pull-up corbel back slabs 6, can not produce uncomfortable feeling yet.
In addition, corbel back slab 6 is to form by folding the curling of the shape of corbel back slab 6.Particularly if its size amplitude with reference to Fig. 3 (b), then should be widened as far as possible by the cans portion 20 of corbel back slab 6 upper tongues 14 both sides, during end with form of straight lines towards the grip part 11, can prevent the deflection of whole corbel back slab 6 like this.
Opening operation with regard to the cover 1 of above-mentioned formation is illustrated below.The cover 1 of this example, shown in Fig. 4 (a), when up drawing on the grip part 11 that finger is hooked in above-mentioned corbel back slab 6, then whole corbel back slab 6 is pulled up along the direction that erects from cover plate 3.In view of the above, top ends 13 that just can this corbel back slab 6 is the above-mentioned rivet 5 of fulcrum pull-up.At this moment, because the ladder 17a of the base end part 22 on this corbel back slab 6 is minimum, thereby the distortion of the base end part 22 of rake 17 is also minimum,, can not absorbed by the distortion of ladder 17a and passes to indentation 4 effectively to the squeese pressure that cover plate 3 transmits by the top ends 13 of corbel back slab 6.In addition, be divided into a pair of tongue 18a that turns back though be close to cover plate portion 18 two, but two projections 21 of turning back between the tongue 18a fuse with it, and for projection 21 is stretched from the outside of corbel back slab 6, on corbel back slab 6, it is involved in the inboard from the outside, so can not damage the rigidity of corbel back slab top ends.And by means of the above-mentioned return portion 19 of being close to cover plate portion 18, make rake 17 and be close to cover plate portion 18 to fuse, be close to cover plate portion 18 by this, can produce very big strength in the top ends 13 of corbel back slab 6 indentation 4 is broken.So, represented as Fig. 4 (b), rivet 5 sides one side with break apart on the above-below direction that oral area 10 1 sides deviate from mutually, indentation 4 is drawn simultaneously, has so just begun the process that indentation 4 breaks easily.
Then shown in Fig. 4 (c), when further lifting corbel back slab 6, by means of above-mentioned rake 17 and above-mentioned return portion 19 top ends 13 with distortion-free corbel back slab 6, with rivet 5 is fulcrum, press and break apart oral area 10, so that on the interior side direction of cover plate 3, the oral area 10 that breaks apart of cover 1 is torn.So, that separates with cover plate 3 breaks apart oral area 10 opening sheet 10 that promptly breaks, be connected on the cover plate 3 by the interval 9 (with reference to Fig. 1) between above-mentioned indentation 4 tops 7 and the terminal 8, and with such state to the bending of the back side of this cover plate 3, and be retained in the back side of cover plate 3, like this, the opening operation is promptly accused and is finished.
Example with regard to other is illustrated below.The corbel back slab 6 of aforementioned example, shown in Fig. 3 (b), projection 21 is arranged on the top 16 of corbel back slab 6, and the corbel back slab 23 of other example shown in the upward view of Fig. 5 (a), has the connecting portion that links to each other with band shape volume part on grip part 24.Shown in Fig. 5 (b), promptly use this corbel back slab 23, also rake 26 and return portion 27 can be on the top ends 25 of corbel back slab 23, be processed to form, thereby aforementioned effect of the present invention can be obtained.Promptly shown in Fig. 5 (a), corbel back slab 23 portion in its back-end has projection 28, and this projection 28 has the pair of end limit that stays after cutting off connecting bridge in the both sides of grip part 24.Fig. 5 (a) expression be the corbel back slab that is connected by a pair of connecting bridge in the both sides of grip part 24 on the banded volume part (not illustrating in the drawings), cut off this connecting bridge and residual projection 28 is to form by the peripheral shape of this corbel back slab 23 is folding.In addition, shown in Fig. 5 (b), the top end part 25 of this corbel back slab 23 has rake 26 and is close to cover plate portion 30, wherein to be cardinal extremity with the end on above-mentioned tongue piece 29 borders tilt to the direction away from cover plate 3 gradually rake 26, be close to cover plate portion 30 from the top of this rake 26 curl downwards, again along cover plate 3 extend to rivet 5 near.Be close in the cover plate portion 30 at this, be processed with return portion 27, this tears the portion of returning 27 open is by that part of folding the forming in the below of rivet 5 one sides that are positioned at sloping portion 26.Therefore, the same with the corbel back slab 6 of aforementioned example, can make base end part 31 distortion of rake 26 very little, also can pass to indentation 4 to top ends 25 effectively to the squeese pressure that cover plate 3 transmits from corbel back slab 23.
Claims (3)
1. cover of pop can comprises: cover plate, indentation, break apart oral area, corbel back slab, wherein said indentation is carved by the shape of the opening that breaks and is located on the above-mentioned cover plate, and its top and terminal room form at interval, and this indentation extends to this terminal all the time from this always; This breaks apart oral area and is formed by this indentation encirclement; This corbel back slab have in the face of this top ends and grip part that breaks apart oral area be rearward end, and be fixed on above the cover plate with rivet, under the effect of this corbel back slab, one side is torn above-mentioned indentation, the one interior side direction that faces cover plate is pressed the above-mentioned oral area that breaks apart, make the above-mentioned oral area opening that breaks apart, simultaneously, the part of the opening sheet that breaks that is formed by the opening effect folds into the inboard of cover plate with the state that links to each other with cover plate, it is characterized in that: above-mentioned corbel back slab has rake and is close to cover plate portion in top ends, wherein this rake is that cardinal extremity extends to the top away from cover plate gradually always with near the end the rivet, this is close to cover plate portion and curls from the top of this rake to cover plate one side, extend to rivet along cover plate again near.
2. cover of pop can as claimed in claim 1, be characterised in that: the above-mentioned cover plate portion of being close to has return portion, this return portion is that near the end edge portion that is positioned at the rivet is formed to above-mentioned rake one side is folding, and be close to the lower surface of this rake and be close between the upper surface of cover plate portion, the base end part of this rake is played strengthening action.
3. cover of pop can as claimed in claim 1 or 2, it is characterized in that: there is a pair of tongue of turning back in the above-mentioned cover plate portion of being close to, this to the tongue of turning back from the top of above-mentioned rake near cover plate one side is curled, is extended to rivet along cover plate again, turn back between the root of tongue two, be provided with the shearing projection, this shearing projection is to form when forming corbel back slab when curl to the inside in the top of above-mentioned rake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97102424 CN1163850A (en) | 1996-02-14 | 1997-02-03 | Easy-open can end |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26618/96 | 1996-02-14 | ||
| CN 97102424 CN1163850A (en) | 1996-02-14 | 1997-02-03 | Easy-open can end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1163850A true CN1163850A (en) | 1997-11-05 |
Family
ID=5166288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97102424 Pending CN1163850A (en) | 1996-02-14 | 1997-02-03 | Easy-open can end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980923B (en) * | 2008-03-27 | 2012-12-19 | 埃克索鲁逊有限公司 | Closure for a package |
-
1997
- 1997-02-03 CN CN 97102424 patent/CN1163850A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980923B (en) * | 2008-03-27 | 2012-12-19 | 埃克索鲁逊有限公司 | Closure for a package |
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