CN1311746A - 带有具有间断加强筋的盖子的容器 - Google Patents

带有具有间断加强筋的盖子的容器 Download PDF

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CN1311746A
CN1311746A CN99809122A CN99809122A CN1311746A CN 1311746 A CN1311746 A CN 1311746A CN 99809122 A CN99809122 A CN 99809122A CN 99809122 A CN99809122 A CN 99809122A CN 1311746 A CN1311746 A CN 1311746A
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乔斯·波尔恰
杰弗里·J·泽特尔
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S C JOHNSON STORAGE CORP
SC Johnson Home Storage Inc
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Abstract

一种弹性可微波加热的容器(10),包括一个碗(12)及一个可选择取下的卡入式盖子(14)。该盖子包括一个具有一向外延伸的刚性突耳件(40)及一个具有一大致环形加强筋(90)的主体(30),加强筋在突耳件具有间断区域(92)。刚性突耳件与间断的环形加强筋结合的组合体允许在需要时随时能以较小的分离力使盖子与碗分离。

Description

带有具有间断加强筋的盖子的容器
技术领域
本发明通常涉及一种用于存放和输送例如食物物品的容器，尤其涉及一种包括一个碗和可选择取下的盖子的容器，该盖子包括一间断的加强筋以有助于可选择地使盖子与碗分离。
技术背景的说明
容器，特别是那些通常用于在微波炉中加热食品的容器应成本较低且易于使用。另外，这种容器应该是多用途的，即，能够承受例如在将该容器直接从冰箱或冷冻装置中输送至微波炉时出现的不同环境的急剧变化。
对于这些可微波加热的容器来说，在该技术中主要焦点在于在盖子和碗之间提供良好的密封。然而，许多已知的可密封微波容器在密封装置方面产生了不必要的复杂性。例如，美国专利US.5,377,860要求沿密封边缘设置一种特殊形状的双密封结构。根据该专利，基底和盖子都需要一个向内设置的逐渐变细的截头圆锥形密封区域以及带有配合切口的一个向下并向外延伸的边缘。虽然这样可以完成一个高度完整的密封，但是我们认为，其需要用不必要的较大力才能分离盖子和碗。而这样会使这种容器更易于溅出，从而造成令人非常不满意的结果。
迄今为止，弹性可微波加热容器通常包括一个较薄的盖子和突耳结构(当存在突耳件时)，其需要比必需的分离力还要大的力才能从碗上取下盖子。该技术在很大程度上未考虑盖子的结构是如何结合密封装置来影响盖子与碗分离的分离力的大小。
发明概述
因此本发明的主要目的在于提供了这样一种容器，其包括一个碗和一个可选择取下的盖子，该盖子包括一个刚性突耳件以及加强筋，该加强筋具有一个在突耳件附近出现的间断，其允许能较容易地安装和取下盖子。
本发明的另一个目的在于提供一种由弹性材料制成的低成本高产量的容器。
本发明的另一个目的在于提供一种弹性容器，该容器可以用在各种环境中，例如冷冻装置和微波炉。
上述目的可以通过提供这样一种容器而得以实现，所述容器包括一个碗和一个由弹性聚合材料制成的可选择性取下的盖子，所述碗和盖子可以通过过盈配合相互啮合。
盖子部分通常包括一个具有周围密封凸缘的主体和一个从所述密封边缘伸出的、具有相对刚性的突耳件。一大致环形加强筋沿盖子的主体从圆周密封凸缘向内设置，该加强筋在刚性突耳件附近是间断的。虽然环形加强筋是用来加强盖子的主体，但是需设置间断以允许密封凸缘和主体沿突耳件附近的密封区域弯曲以有助于一开始就能克服碗和盖子之间的过盈配合。一旦破坏了密封，那么由加强筋增强的盖子的整体刚度允许所述盖子易于与碗分离。
通过多种已知热塑性树脂中的任意一种能经济地热成形制造出本发明的容器，在这些已知热塑性树脂包括但不局限于聚酰氨，聚丙烯酸，多芳基化合物，聚碳酸酯，聚酯，聚醚酰亚胺，聚醚酮，聚烯烃，聚苯，聚氯乙烯，以及各种苯乙烯和液晶聚合物。
从下面附图和发明的详细描述中，能够更清楚地理解本发明的各个特征、目的和优点。
附图的简要说明
图1为容器组件的分解透视图，根据本发明的教导，该容器组件包括一个碗和可选择取下的盖子；
图2为沿直线2-2所示的图1中容器的局部剖视图；
图3为按照本发明教导的盖子的第一实施例的顶视图；
图4为按照本发明教导的盖子的第二实施例的局部顶视图。
图5为按照本发明教导的盖子的第三实施例的局部顶视图。
实现本发明的方式
通常参照图1，该图给出了一个容器10，根据本发明，其包括一个碗12和可选择取下的盖子14。首先应指出的是，虽然该容器通常为矩形结构，但是该容器可采用非限定性实施例给出的其它各种结构，例如圆形、椭圆形或方形。
碗12通常包括一个底部16和一从底部垂直延伸的连续侧壁18。一个L形边缘20整体连接在垂直延伸的侧壁上，该边缘包括一个从侧壁向外伸出的第一侧边24和一个从第一侧边向下延伸的第二侧边26。从图2中可更清楚地看出，侧壁18的上部22最好包括一个向内延伸的环形节点(nub)28，如将在下面非常详细说明的那样的一样，该节点有助于在盖子和碗之间产生密封啮合。
盖子14通常包括一个具有一个圆周设置的凸缘32的中央盘形主体30，该边缘在安装时盖住了设置在碗12上凸缘20的一部分。如在图2中可以最清楚地看出，凸缘32的横截面通常为倒U形，其包括一个从主体延伸的第一侧边34，一个第二侧边36以及一个设在它们之间的腹板38。因此，在把盖子14连接在碗12时，第一侧边34在环形节点28上方推进直到密封点5与侧壁的内部表面啮合以在盖子和碗之间形成过盈配合。一刚性突耳件40从凸缘32的第二侧边向外延伸，其结构应能防止在固定至密封凸缘的点处产生弯曲。
盖子14通常还设有一大致环形加强筋90，该加强筋从盖子的主体向上延伸并且向内与凸缘32分离。除了沿靠近突耳件40主体产生的间断92的区域外，该加强筋90绕盖子连续延伸。该环形加强筋90略微终止于最外面的位置内，在该位置处，突耳件40的圆周边缘44终止于密封凸缘32内，即环形加强筋90终止在图3所示的从突耳件40的扩口边缘44、44’延伸的虚线100的区域内。还应该指出的是，如果需要的话，可以减少间断区域，这样就能略微增加分离盖子和碗所必要的分离力。
如图3的实施例所示，所述间断可以是连续的，或如图5所示，可包括多个隔开的加强筋段94。大致环形的加强筋90最好比较接近密封凸缘32。在这点上，环形加强筋90与密封凸缘32的前缘96的距离应该在0.5cm和6.0cm之间。
如将在下面更详细地说明的一样，与本领域公知的其它可微波加热的容器相比较，间断的加强筋90和刚性突耳件40的组合起到了减小克服盖子和碗间过盈配合所需要的分离力的作用。
形状为图2所示的大致三角形刚性突耳件40包括一个底板42和一个圆周边缘44。底板42设有多个隔开的直立肋条46，这些肋条包括第一肋条50，所述第一肋条沿由参考标号48所示的穿过突耳件的纵向中心线设置。第二和第三肋条52和54分别设置在该第一肋条的相对侧上，这两个肋条远离纵向中心线48倾斜延伸。每条肋条均限定有非常陡的边缘，这些边缘进一步提高了突耳件的结构刚度。
这些肋条位于特定的位置处以使突耳件的刚度达到最大，从而增强了分离力从突耳件至密封区域的转移，即当需要时能够增强盖子从碗上脱开的能力。例如第一肋条50包括一个相对于底板、以与纵向中心线的角度成大约3°至7°延伸的第一横向边缘，及一个与纵向中心线的角度成大约-3°至-7°延伸的第二横向边缘。因此，该第一肋条通常为梯形。
第二肋条52包括一个与纵向中心线的角度成大约8°至20°延伸的第一横向边缘及一个与纵向中心线的角度成大约20°至40°延伸的第二横向边缘。与上述第二肋条52成镜像状态设置的第三肋条54沿一第一横向边缘以大约-8°至-12°的角度延伸并且沿第二横向边缘与纵向中心线成大约-20°至-40°的角度延伸。因此，如根据这些理想的角度取向所描述和显示的那样，所述第二和第三肋条远离中心线倾斜延伸且其形状大致为三角形。
应该指出的是，为清楚起见，此处使用了相对于纵向中心线的负角度符号(-°)以强调第二和第三肋条最好彼此成镜像状态设置。因而，本领域普通技术人员应该易于认识到，例如在采用标准半径表示时，-3°等于357°而-7°等于353°。
每一直立肋条均包括在边缘32附近终止的第一端部70和在突耳件周边44附近终止的第二端部72。直立肋条通常以大约12°至18°之间的平均倾斜角从第二端部朝第一端部向上倾斜，以便肋条在腹板38和第二侧边36之间的连接点76附近与边缘32相连。突耳件的周边最好包括一个向下凸缘7，该凸缘在底板42下方延伸从而提供了一个用以防止使用者的拇指或指头滑离突耳件的阻碍物。
为了从碗12取下盖子14，使用者应向上拉动突耳件40。这样，由于其所具有的刚度，分离力会从刚性突耳件40传递至由于环形加强筋90的间断区域92以及所采用聚合材料的弹性特性而具有一定弹性的密封凸缘32及主体部分98上。沿容器的突耳件角首先克服了由过盈配合所产生的密封。在使用者继续拉动突耳件40时，由于通过环形加强筋90在盖子周边附近所提供的刚度，因此盖子的剩余部分也易于分离。
因此，根据上文应该理解，本发明的容器通过盖子和碗之间的过盈配合确保了高质量的密封，并且在需要时还易于取下盖子。
如上所述，虽然盖子和碗可以由多种不同聚合材料中的一种通过热成形制成，但是含有可选择的增滑剂的聚丙烯均聚物被认为是较理想的。通过采用一种聚丙烯均聚物，可以将盖子和碗热成形以使其平均厚度约为在10至50密耳之间并且还能提供必要的结构完整性。
显然，虽然所公开的本发明最佳实施例能良好地满足所提到的目的，但是应理解在不脱离本发明思想的情况下，能够容易地对本发明进行改进，变化和改变。
工业实用性
可以以低成本制造这些容器，以提供在使用之后可再次使用或处理的经济型存储容器。

Claims (15)

1．一种容器，包括一个碗和一个可选择取下的盖子，所述盖子包括：
一个主体和一个沿所述主体前缘、从所述主体伸出的周边密封凸缘；
一个沿密封凸缘的周边边缘、从所述密封凸缘伸出的刚性突耳件；
一个沿所述主体、从所述密封凸缘向内设置的大致环形的加强筋，所述加强筋包括沿靠近所述突耳件的所述主体设置的间断区域。
2．根据权利要求1所述的盖子，其特征在于：所述加强筋从所述主体向上延伸。
3．根据权利要求1所述的盖子，其特征在于：所述间断区域包括至少一个与所述加强筋隔开的加强筋段。
4．根据权利要求1所述的盖子，其特征在于：所述加强筋与所述周边密封凸缘的前缘距离为大约0.5cm至6.0cm。
5．根据权利要求1所述的盖子，其特征在于：所述突耳件包括多个隔开的直立肋条。
6．根据权利要求5所述的盖子，其特征在于：所述多个隔开的直立肋条包括沿着纵向中心线设置的第一肋条和至少另一个离开所述纵向中心线倾斜延伸的肋条。
7．根据权利要求5的盖子，其特征在于：所述直立肋条包括一个在所述密封凸缘附近终止的第一端部以及一个在所述突耳件的周边附近终止的第二端部。
8．根据权利要求7的盖子，其特征在于：所述直立肋条从所述第二端部朝所述第一端部向上倾斜。
9．一种弹性可微波加热的容器，包括：
一个碗，该碗包括一个底部，一个从所述底部向上延伸以限定一个碗腔的容器侧壁，以及一个从所述侧壁中伸出的边缘；
一个可选择地取下的盖子，该盖子包括一个中央大致为盘形的主体，该主体具有一个周边密封凸缘，该密封凸缘包括一个向外延伸的刚性突耳件，所述主体包括一个大致环形加强筋，其向内与所述密封凸缘相距大约0.5至0.6cm向内设置，所述环形加强筋包括一个间断部分，其沿靠近所述突耳件的主体设置，从而有助于使盖子与容器分离。
10．根据权利要求9所述的容器，其特征在于：所述加强筋从所述主体中向上延伸。
11．根据权利要求9所述的容器，其特征在于：所述间断包括与所述加强筋隔开的至少一个加强筋段。
12．根据权利要求9所述的容器，其特征在于：所述突耳部件包括多个隔开的直立肋条。
13．根据权利要求12所述的容器，其特征在于：所述多个隔开的直立肋条包括一个沿纵向中心线设置的第一肋条及至少另一个离开所述纵向中心线倾斜延伸的肋条。
14．根据权利要求12所述的容器，其特征在于：所述直立肋条包括一个在所述密封凸缘附近终止的第一端部以及一个在所述突耳件的周边附近终止的第二端部。
15．根据权利要求14所述的容器，其特征在于：所述直立肋条从所述第二端部朝所述第一端部向上倾斜。
CN99809122A 1998-06-25 1999-06-11 带有具有间断加强筋的盖子的容器 Expired - Fee Related CN1106330C (zh)

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