CN1042119C - 快速扣紧挠性盖 - Google Patents

快速扣紧挠性盖 Download PDF

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CN1042119C
CN1042119C CN94106652A CN94106652A CN1042119C CN 1042119 C CN1042119 C CN 1042119C CN 94106652 A CN94106652 A CN 94106652A CN 94106652 A CN94106652 A CN 94106652A CN 1042119 C CN1042119 C CN 1042119C
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CN1101618A (zh
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老约翰·W·V·荷尔特
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PLAS-TOOL Co
Plas Tool Co
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Abstract

一种快速扣紧的挠性容器盖具有平的盖面和从盖面垂直延伸的环形周缘以便环绕并扣紧容器的环形唇部“环形”包括各种闭合环形如矩形。周缘具有间隔开的板,从周缘其余部分向内倾斜以接合容器唇部的下侧,这有助于将盖保持在容器上,当周缘基本没有周向撕开线的情况下当容器掉落时使盖可避免突然松脱的问题,且可防止同向撕开线的意外撕开。倾斜的板在成对的切口间形成,可通一对垂直切口而使限定板的部分分离,以便打开容器。

Description

快速扣紧挠性盖
本发明涉及塑料的快速捉紧的挠性容器盖,其用于安装在一种塑料容器的顶部,这种塑料容器具有径向外伸的环形边缘,所述盖包括一个上部盖面,一个环形周向凸缘,一个从所述周向凸缘向内间隔开来的环形内壁,所述周向凸缘和环形内壁限定一个朝下的环形凹部以便在所述盖的顶部装纳所述环形边缘,所述周向凸缘和所述环形内壁基本是竖直的,所述周向凸缘包括多个间隔开来的挠性板,每个挠性板只在板的下缘连接于所述周向凸缘,并从所述下缘向上、向内延伸,所述挠性板当所述盖最初在所述容器的顶部压下时向外偏摆,而当所述盖在所述容器的顶部完全压下时则径向向内弹回,锁定在所述环形边缘下面。
大型容器的塑料盖当然是公知的且有着广泛的应用。然而,其局限性在于,当摔落时塑料盖由于有多少有些挠性而容易从容器上突然松脱。当容器的尺寸为半加仑或更大时这个问题更为突出,因此,现今大容器的塑料盖通常用绕其圆周的金属丝环保持在位。这当然会显著增加容器的成本,也造成使用不便。
防止容器摔落时突然松脱的另一个解决办法公开于美国专利第4,718,571号中,其中,采用使盖的裙部的下部向上折起而与容器的唇部接合。撕去圆周的“分离槽”或弱化线60(图4A)可打开该系统。
但是业已发现,当大约半加仑或更大的较大容器摔落时,所装液体中产生的震动波对盖的冲击可能足以使弱化线断裂。因此,上述美国专利的设计在摔落强度方面具有局限性。同样,其它利用圆周撕开带的设计如美国专利第4,735,337号专利的设计也具有类似的局限性。
本发明的目的是提供一种塑料的快速扣紧的挠性容器盖,其除了具有高的摔落强度外,无需设置周向撕开线并可以方便地打开。
按照本发明的塑料的快速扣紧的挠性容器盖,其用于安装在一种塑料容器的顶部,这种塑料容器具有径向外伸的环形边缘,所述盖包括一个上部盖面,一个环形周向凸缘,一个从所述周向凸缘向内间隔开来的环形内壁,所述周向凸缘和环形内壁限定一个朝下的环形凹部以便在所述盖的顶部装纳所述环形边缘,所述周向凸缘和所述环形内壁基本是竖直的,所述周向凸缘包括多个间隔开来的挠性板,每个挠性板只在板的下缘连接于所述周向凸缘,并从所述下缘向上、向内延伸,所述挠性板当所述盖最初在所述容器的顶部压下时向外偏摆,而当所述盖在所述容器的顶部完全压下时则径向向内弹回,锁定在所述环形边缘下面,其特征在于:在所述间隔开来的多个挠性板中的每一个的每个侧面上形成一个切口,每个所述切口用于使切割工具可以进入,从而可从所述孔向下切割至所述周向凸缘的下缘,以便除去所述间隔开来的挠性板,从而便于将盖卸下,所述周向凸缘基本没有周向的撕开线。
按照本发明,一般由挠性塑料制成的容器的快速扣紧盖与同类现有技术的设计相比较可显著增加摔落强度,也可减少对为将盖保持在容器唇部的金属丝环的需要。因此,由于这种盖可以用类似于现有技术的盖的方式用塑料模制,无需增加成本或几乎不增加成本,故而是一种重大改进,而且节约了成本。
除了高的摔落强度外,本发明的盖可以方便地打开,由于这种盖有一定的挠性,手劲不大的人也可用手打开。
按照本发明,一种挠性容器盖具有一平的盖面和一环形的从盖面垂直延伸的周缘,包住并扣紧容器的环形唇部。该周缘具有多个间隔开来的,从所述周缘其余部分向内弯曲的板,用于接合容器唇部的下侧,这有助于将盖保持在容器上。按照本发明,上述周缘可以基本不设周向的撕开线装置。
上述向内弯曲的板可仅沿一端连接于周缘的其余部分,因而它们可以向外挠曲,然后向内弹回以便将盖装在容器上。
一般来说,一环形壁从平的盖面垂直延伸,与上述环形周缘呈向内间隔开来的关系,从而在周缘和环形壁之间限定了一条环形凹槽,该凹槽用于容纳容器唇部。该环形壁最好在到达向内弯曲的,间隔开来的板的外端之前的一点上终止。向内弯曲的,间隔开来的板最好以其向内弯曲的位置模制,因此它们可以向外挠曲,但当不再受弯曲应力时则倾向于向内弹回。
每个向内弯曲的板最好在环形周缘的分离部分上成形或限定。每个分离部分都在成对的切口间形成。因此,通过使用打开包装的标准小刀进行的垂直切割使上述部分侧向分离即可打开盖。
在上述切割之后,切后的周缘的部分可形成摆动地连接于盖的其余部分的上缘,因此,使切后的周缘部分可向上折,使倾斜的板移出与容器唇部的接合状态,这使盖可被打开。
或者,承载着上述板的周缘的部分可只在侧向连接于盖的其余部分。在这种实施例中,上述部分可通过垂直切割(切割沿着垂直于周向的线进行)被完全切除。
本发明的盖,以及其它盖可以安装在容器上,盖的环形周缘限定一向内或向外凸出的环形密封件,该密封件与在容器唇部上相应的向外或向内凸出的配合件密封地接合。一般来说,环形周缘限定一向内凸出的环形密封件,而容器限定一朝外的凹槽(配合件)。
按照本发明,上述密封件和环形配合件中至少一个覆盖着印上的或涂上的弹性的环形密封层,用作垫圈。印刷或涂刷过程可与印制容器上的标记同时进行,其区别是不用油墨而是通过普通的印刷或涂刷方法但使用液态材料如乳胶进行。液态材料如乳胶干后成为一挠性层覆盖在上述盖和容器的相互配合的部分上,最好覆盖在容器上的朝外的凹槽上。
这种环形密封层的厚度可以为大约0.01英寸左右,甚至更薄。如果环形密封件和容器唇部的配合件模制时达到精确的公差,那么上述的薄的环形密封层可提供极好的防漏密封。上述自动的方法成本很低,可消除对密器和盖组件中对橡胶密封圈的需要。
本发明的另一个优点是,本发明的盖和容器可以根据需要为矩形,圆形或椭圆形截面。
在某些推荐实施例中,本发明的盖,其环形周缘可通过一环形圈连接于盖的其余部分,该环形圈占据一个与平的盖面的大部分间隔开来但与其平行的平面。上述环形圈可在临近每个倾斜的板处形成开口,开口的目的是使用于形成间隔开来的,向内弯曲的板的横芯部分可以撤出,从而大大简化制造盖的模子,而不显著降低盖的密封性能。这也使环形周缘可以基本上不带有开口。
或者,向内倾斜的板也可以从在环形周缘上形成的临近开口向内延伸,因而在模制过程中使模芯部分可伸过开口以形成向内倾斜的板。
现在对照以下附图详述本发明的推荐实施例:
图1是按照本发明的模制的盖的剖视图;
图2是图1所示盖的圆周的一部分的放大立体图;
图3至6是沿图2中相应剖面线的剖视图,剖面线的编号与图号相应;
图7所示放大剖视图表示本发明盖的另一实施例的圆周的一部分,图中盖安装在容器上;
图8是类似于图7的视图,图中未画容器,表示周缘的部分可向外摆动,使向内倾斜的板脱开接合状态;
图9所示平面图表示本发明盖的另一实施例的圆周的一部分;
图10和11是沿图9中相应剖面线的剖视图,剖面线编号与图号相应:
图12是本发明的盖的另一实施例的局部立体图;
图13是图12所示实施例的局部的视图;
图14和15是沿图13中相应剖面线的剖视图,剖面线的编号与图号相应;
图16是类似于图15的剖视图,但表示盖正处在安放在容器上的过程中;
图17是类似于图16的剖视图,表示盖已安装在容器上;
图18所示局部立体图表示本发明的盖的另一实施例的圆周的一部分;
图19是沿图18中线19-19的剖视图,表示盖正处于在容器上安放的过程中;
图20是类似于图19的剖视图;表示盖已在容器上处于锁固位置;
图21是一种矩形盖和容器的立体图,这种盖和容器可以是前述任一实施例的结构;
图22是按照本发明的另一实施例的剖视图。
现参阅图1至6,本发明的快速扣紧的,挠性盖10的一个实施例具有一个平的盖面12和一个从盖面12垂直延伸的环形周缘14,环绕并扣紧容器的环形唇。
术语“环形”不只包括圆环形,而且也包括其它形状如椭圆或矩形,这是由于本发明也可用于除圆形以外的其它截面的容器。
盖10也具有一环形壁16,它从平的盖面12垂直延伸,与环形周缘14呈向内间隔开来的关系,从而在周缘和环形壁之间形成一环形凹槽18,用来容纳容器的唇部。还具有一内部的环形凹槽20,凹槽20内如需要可设有多个任何需要形状的径向肋以调节盖10的那个部分的挠性和强度。
按照本发明,环形周缘14限定多个间隔开来的板22,板22相对于周缘的其余部分向内倾斜,其位置可接合容器的唇部的下侧,说明书下面所公开的实施例如图16和17画出了这种情形。基本上,当盖10应用于容器上时,由于容器唇部的送进,板22被瞬时向外推,然后板22快速弹回其原来的形状,将盖10锁定在容器上。板22在其模制时的向内倾斜位置上距环形壁16至少2mm,以便为构成该结构的钢模部分提供空间。
板22仅在其下缘24连接于周缘14的其余部分,板22的自然的,模制形状是图1至6所示的向内倾斜的形状。因此,板22可向外挠曲,但一当允许时就再次向内迅速弹回。周缘14最好在其下部自由端形成一环形的,加厚的加固部分40以增强圆周强度。
盖一般有两至六个向内倾斜的板22,一般绕盖的圆周等距分布。在图1至6所示实施例中,板22在三个侧面由一侧向开口26包围,以便于这种结构的模制。
突起的环形圈27将周缘14连接于平的盖面12。环圈27占据平行于盖面12的平面,但是与其间隔开来。
盖10在容器19(图3)上的密封可由壁16和容器唇部21,盖顶环形区域28和容器唇部21之间的环形密封,以及可密封地压容器唇部21上的盖10的外部区域30而实现。还可设置橡胶密封圈33以利于密封。
从图16和17可以看出类似于盖10结构的一个盖是如何通过板22的锁固作用永久锁固在容器上的情况。为了打开盖10,只需用刀或类似物从切口26或32作垂直切割即可。为了作如线条34所示的垂直切割,要在每块板22的每侧作垂直切割。然后才可能转动周缘14的已被切割线条34隔开的部分36,使部分36沿减薄的弯曲弱化线向外摆动,如图4所示。当然,这种弯曲使板22与容器唇部脱离接合状态。而且盖10的圆周强度也被显著削弱了,这是由于下部环形加固部分40被切断而弱化,这样一般通过手动剥离作用即可卸掉挠性盖10。
如果垂直切割是在开口26处,那么,板22被完全切离盖10,也可将盖打开。
如果需要,环形凹痕41也可不要,使周缘14的环形壁更为平、直,例如,图22即未设凹痕66。
这样形成的挠性塑料盖具有极高抗摔落能力,当摔落时不会从大型的,装满的容器上突然松脱。同时,如上所述,盖从容器上卸下时也很方便,而且可以容易地再盖在容器上以提供对容器的密封。摆动部分38可弹回并与容器19的唇部相接合,以便再次封闭容器。
现在参阅图7和8,图中表示本发明盖的另一种实施例,在结构和功能上除另作说明外与前述实施例相似。
如图7所示,盖10a盖在桶64的唇部62上。盖10a上形成一个与前述实施例相似的环形周缘14a。图7所示剖视图类似于通过图2的凹下部分66的剖视图,图8表示周缘14a的部分36a可被垂向切割和向外摆动,从而使斜的板22a位移的情况,这与前述实施例相似。
设有环形壁16a,其作用与前述实施例相似。
如果需要,但并非必要的是,一条环形密封线68可装配在盖10a的一条凹槽内,该凹槽由向内凸出的环形密封件70限定,密封件70密封地装在桶的唇部62的朝外的环形凹槽72中。按照本发明,由于设有印上的或涂上的弹性密封层74用作垫圈,因而显著改善了密封性能。这种密封层可以是弹性乳胶,可以通过普通的印刷或涂刷方法施加在向内凸出的环形密封件70上或朝外的环形凹槽上,特别是在桶64加标签时通过印刷方式施加。凹槽72最好以上述方法设置环形密封层74。因此,在盖和容器之间形成有效的弹性密封而无需另外设置橡胶圈等,因而可显著降低成本。密封层74的厚度一般大约为0.002至0.05英寸,例如大约0.01英寸。
为了有效地密封盖的周缘14a,作为替代或另外设置在凹槽72中的弹性密封圈。
现参阅图9至11,图中示出容器盖的另一种设计,除另有说明外,与图1至6所示的盖相似。
盖10c设有与前述实施例相似的平的盖面12c和环形周缘14c。在此实施例中,向内延伸的,间隔开来的板22c是与环形周缘14c整体模制的,这与前述实施例相同,但是每个板22c配有上部开口76,开口76的设置是为了使模子的部分能够形成板22c,在环形周缘14a中没有侧面开口,如前所述,在板的两侧作垂向切割,可形成切口括住向内延伸的板22c以利于板22c的上摆,或将其完全卸去。
现在参阅图12至15,其中公开了本发明的挠性盖的另一种实施例,除另有说明外,与图1至6所示实施例相似。
如图所示,盖10c具有一平的盖面12c和一环形周缘14c,周缘14c从盖而垂直延伸并适于围绕并扣紧容器的唇部。如图所示,倾斜的板22c与图1至6所示实施例有相似的结构和功能。周缘14c的底部形成一环形加强肋40c,用于加强周缘,直至肋40c被切割以便打开盖。
如前所述,板22c可由切口26c括住,使板22c可被卸去。
在本实施例中,设有一内部的环形壁16c,连接于环形圈27c,圈27c占据一个平行于平的盖面12c且与其间隔开来的平面,但是与图1至6所示实施例有些不同的结构。
现参阅图16和17,其中表示盖10c放置在桶缘62上的情况。图16表示盖降在桶的唇部62上,使板22c向外摆动位移。然后,如图17所示,当盖10c完全座落在桶的唇部上时,板22c快速弹回其原来的形状。因此,盖10c永久地装在桶上直至通过使用各切口26c,或类似于前述开口32的其它切口,切插板22c为止。
现参阅图18至20,图中表示一种除另有说明外类似于图12至17所示结构的设计。盖10d具有平的盖面12d和环形周缘14,这与前述实施例相似。也设有功能与前述实施例相似的向内弯曲的板22d。但是,在此实施例中,板22d载有与其整体模制的面向外部的托架80,托架80有一凸片82。
在每块板22d两侧也设有切口26d。
托架80和凸片82的目的是便于将盖从模子上取下。模子的占据和形成托架80的凹槽84的部分在完成模制过程时可被侧向向外拉,从而拉动托架80和板22d。这使新成形的板22d超越模子的形成凹槽86的部分的障碍,从而有利于分模和新成形的盖的卸下。当松卸时,板22d迅速弹回其需要的位置,其动作方式与图19和20所示方式相似,图19和20表示将盖10d设置于桶的唇部62上的情况,放置方式与前述实施例相似。
与前述实施例中的情况一样,盖10d因此而永久地装在桶的唇部62上,直至从开口26d开始垂直切断周缘14d的下部为止。
图21表示一个矩形的盖和容器90,其设计可以为前述实施例中的任何一种。
图22表示另一种盖10e的放大剖视图,其结构和功能除另有说明外与前述实施例相似。
具体来说,盖10e与图1至6所示盖10相似,但是盖10e的前壁66e是直的,没有图1至6所示实施例中由向内的环形凹痕41所形成的凹槽。
倾斜的板22e的结构和功能可以和倾斜的板22d相似。容器62的唇部,当盖放置于容器上时,可迫使板22e向外,然后如前所述快速弹回而使盖扣紧。为了增加内部环形壁94区域上的刚性可设计多个径向肋片92。
盖10e可以具有前述任何一种辅助密封装置。
本发明的盖可模制而且是挠性的,但是,即使是大型容器,当其掉落时,盖也具有很强的对突然松脱或过早撕裂的抵御能力。另外,本发明的盖有防撬功能,切割可提供容器已被打开的明显证据,而且容器具有对挥发内存物的极好的密封特性。
上面的描述只是用于说明,而并不是对本发明范围的限定。

Claims (10)

1.一种塑料的快速扣紧的挠性容器盖(10c),其用于安装在一种塑料容器的顶部,这种塑料容器具有径向外伸的环形边缘,所述盖包括一个上部盖面(12c),一个环形周缘(14c),一个从所述周缘向内间隔开来的环形内壁(16c),所述周缘和环形内壁限定一个朝下的环形凹部以便在所述盖的顶部装纳所述环形边缘,所述周向凸缘和所述环形内壁基本是竖直的,所述周向凸缘包括多个间隔开来的挠性板(22c),每个挠性板只在板的下缘连接于所述周向凸缘,并从所述下缘向上、向内延伸,所述挠性板(22c)当所述盖最初在所述容器的顶部压下时向外偏摆,而当所述盖在所述容器的顶部完全压下时则径向向内弹回,锁定在所述环形边缘下面,其特征在于:在所述间隔开来的多个挠性板(22c)中的每一个的每个侧面上形成一个切口(26c),每个所述切口(26c)用于使切割工具可以进入,从而可从所述切口向下切割至所述周向凸缘的下缘,以便除去所述间隔开来的挠性板(22c),从而便于将盖卸下,所述周缘(14c)基本没有周向的撕开线。
2.根据权利要求1所述的塑料的快速扣紧的挠性容器盖,其特征在于:它还包括多个铰接安装的凸缘部分(36),每个所述凸缘部分沿挠性板下缘(24)连接有一个所述挠性板,每个所述凸缘部分(36)具有一摆动部分(38),在上缘处它连接于所述周向凸缘的上部,所述凸缘部分(36)的摆动部分(38)限定一条所述凸缘部分(36)和所述周向凸缘的所述上部之间的铰接线,在所述凸缘部分(36)上形成另外一对切口(32),每个所述凸缘部分(36)的每一侧面一个切口,每个所述另外的切口(32)用于使切割工具进入,从而可沿切割线条(34)从所述另外的切口向下切割至所述凸缘部分的下部环形加固部分(40),使所述凸缘部分绕所述铰接线向外、向上摆动以便将所述间隔开来的挠性板(22)移至松释位置,从而便于将所述盖卸下。
3.根据权利要求1所述的塑料的快速扣紧的挠性盖(10a),其特征在于:所述周缘(14a)包括靠近其上端的径向朝外的环形槽,以及一根位于所述槽中的环形密封线(68)。
4.根据权利要求3所述的塑料的快速扣紧的挠性盖(10a),其特征在于:所述周缘(14a)形成有一径向向内凸起的环形密封件(70),其邻近于所述环形槽,环形唇部(62)具有一环形凹槽(72),该环形凹槽当所述盖(10a)在所述容器的顶部完全压下时容纳所述环形密封件(70)。
5.根据权利要求4所述的塑料的快速扣紧挠性盖,其特征在于:一密封环在所述环形密封件径向以内位于所述环形凹槽(72)内。
6.根据权利要求1所述的塑料的快速扣紧挠性盖,其特征在于:在所述凸缘(14)的内侧形成一条环形凹痕(41),该环形凹痕当所述盖在所述容器的顶部上完全压下时可锁定在所述环形唇部(62)下面,所述环形凹痕在所述挠性板之一存在的部位中断,当所述挠性板(22)已移至松释位置后,所述环形凹痕留在所述环形唇部(62)下面的锁定位置上。
7.根据权利要求2所述的塑料的快速扣紧挠性盖,其特征在于:在所述凸缘部分(36)的内侧形成一条环形凹痕(41),该环形凹痕当所述盖在所述容器的顶部上完全压下时可锁定在所述环形唇部(62)下面,所述环形凹痕(41)在所述挠性板之一存在的部位中断,当所述挠性板(22)已移至松释位置后,所述环形凹痕(41)留在所述环形唇部(62)下面的锁定位置上。
8.根据权利要求3所述的塑料的快速扣紧挠性盖,其特征在于:在所述凸缘部分(36)的内侧形成一条环形凹痕(41),该环形凹痕当所述盖在所述容器的顶部上完全压下时可锁定在所述环形唇部(62)下面,所述环形凹痕在所述挠性板之一存在的部位中断,当所述挠性板已移至松释位置后,所述环形凹痕留在所述环形唇部(62)下面的锁定位置上。
9.根据权利要求4所述的塑料的快速扣紧挠性盖,其特征在于:在所述周缘(14a)的内侧形成一条环形凹痕(41),该环形凹痕当所述盖在所述容器的顶部上完全压下时可锁定在所述环形唇部(62)下面,所述凸脊在所述挠性板之一存在的部位中断,当所述挠性板(22)已移至松释位置后,所述环形凹痕留在所述环形唇部(62)下面的锁定位置上。
10.根据权利要求5所述的塑料的快速扣紧挠性盖,其特征在于:在所述周缘(14a)的内侧形成一条环形凹痕(41),该环形凹痕当所述盖在所述容器的顶部上完全压下时可锁定在所述环形唇部(62)下面,所述环形凹痕在所述挠性板之一存在的部位中断,当所述挠性板(22)已移至松释位置后,所述环形凹痕留在所述环形唇部(62)下面的锁定位置上。
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CN1101618A (zh) 1995-04-19
JPH07206022A (ja) 1995-08-08
NZ260699A (en) 1997-02-24
AU6460594A (en) 1994-12-15
CA2125352A1 (en) 1994-12-15
JP2745041B2 (ja) 1998-04-28
CA2125352C (en) 1999-08-03
US5538154A (en) 1996-07-23
AU669801B2 (en) 1996-06-20

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