LID
A lid of the present invention is used for covering a cup. The cup has a cup body and a rim flange. The rim flange surrounds upper end of the cup body. A groove is defined between the rim flange and the cup body. A horizontal distance H1 is defined between the groove and outer contour of the rim flange. The lid includes a cover plate and an engagement portion. The engagement portion is disposed on periphery of the cover plate. The engagement portion has a barb portion located on its bottom end. A tip end of the barb portion can insert into the groove. A horizontal distance H2 is defined between the tip end and outer contour of the rim flange when the lid covers the cup. The distance H2 is approximately equal to the distance H1. As such, engagement relationship between the lid and the cup is strengthened.
1. Field of the Invention
The present invention relates to a lid for a cup, more particularly to a disposable lid.
2. Description of the Prior Art
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However, the cup or the rim flange may be deformed when the cup is grabbed by someone. As a result, the cup is probably dropped out from the protruding portion. Moreover, each batch of cups has its own particular specifications established by the suppliers. The standards for the size, the thickness, the height and the diameter of the rim flanges of cups are different from provider to provider. If the lid is not fit well with the cup, the cup can be dropped out from the lid easily.
The present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages.
SUMMARY OF THE INVENTIONThe main object of the present invention is to provide a lid which is able to tightly engage with a cup even if the thickness of the rim flange of the cup is changed.
To achieve the above and other objects, a lid of the present invention is used for covering a cup. The cup has a barrel-shaped cup body and a rim flange. The cup body has an upper opening and an outer surface. The rim flange surrounds the opening annularly. The outer surface extends downwardly from the rim flange. A groove is defined between the outer surface and the rim flange. A horizontal distance H1 is defined horizontally between the groove and an outer contour of the rim flange. The lid includes a cover plate and an engagement portion.
The engagement portion is annularly disposed on a periphery of the cover plate. A bottom end of the engagement portion has a barb portion. The barb portion is elastically expandable. A tip end of the barb portion is adapted for inserting into the groove, so that the barb portion and the rim flange are in an engagement relationship. A horizontal distance H2 is defined horizontally between the tip end and the outer contour of the rim flange when the lid covers the cup. A height of the tip end is greater than a height of a bottom edge of the rim flange when the lid covers the cup.
The horizontal distance H2 is approximately equal to the horizontal distance H1.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
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The cover plate 20 is used for covering the opening. Preferably, the cover plate 20 is provided with a hole to enable drink to flow therethrough.
The engagement portion 30 is annularly disposed on a periphery of the cover plate 20. A bottom end of the engagement portion 30 has a circular barb portion 31. The barb portion 31 is elastically expandable. A tip end of the barb portion 31 is adapted for inserting into the groove 14, so that the barb portion 31 and the rim flange 12 are in an engagement relationship. Preferably, the barb portion 31 is outwardly shoved and expanded elastically when the lid is covering the cup 10. A horizontal distance H2 is defined horizontally between the tip end of the barb portion 31 and the outer contour of the rim flange 12 when the lid covers the cup 10. A height of the tip end is greater than a height of a bottom edge of the rim flange 12 when the lid covers the cup 10. The horizontal distance H2 is approximately equal to the horizontal distance H1.
The inner flange 40 is disposed on a bottom portion of the cover plate 20. The engagement portion 30 encircles the inner flange 40. The inner flange 40 is adapted for an inner edge of the rim flange 12 to abut thereagainst. Preferably, the inner flange 40 is circularly arranged. The inner flange 40 abuts outwardly against the rim flange 12, so that the barb portion 31 can engage with the rim flange 12 easily. In other possible embodiments of the present invention, the inner flange may be several sub-sections or protrusions which are discontinuous arranged on the bottom portion of the cover plate 20.
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Accordingly, the lid is able to engage with the cup 10. Please refer to
Claims
1. A lid, used for covering a cup, the cup having a barrel-shaped cup body and a rim flange, the cup body having an upper opening and an outer surface, the rim flange annularly surrounding the opening, the outer surface extending downwardly from the rim flange, a groove being defined between the outer surface and the rim flange, a horizontal distance H1 being defined horizontally between the groove and an outer contour of the rim flange, the lid comprising:
- a cover plate;
- an engagement portion, annularly disposed on a periphery of the cover plate, a bottom end of the engagement portion having a barb portion, the barb portion being elastically expandable, a tip end of the barb portion being adapted for inserting into the groove, so that the barb portion and the rim flange are in an engagement relationship, a horizontal distance H2 being defined horizontally between the tip end and the outer contour of the rim flange when the lid covers the cup, a height of the tip end being greater than a height of a bottom edge of the rim flange when the lid covers the cup;
- wherein the horizontal distance H2 is approximately equal to the horizontal distance H1.
2. The lid of claim 1, further comprising an inner flange, the inner flange being disposed on a bottom portion of the cover plate, the engagement portion encircling the inner flange, the inner flange being adapted for an inner edge of the rim flange to abut thereagainst.
3. The lid of claim 2, wherein the inner flange is ring-shaped.
4. The lid of claim 1, wherein the barb portion is outwardly shoved and expanded elastically when the lid is covering the cup.
5. The lid of claim 1, wherein the barb portion is ring-shaped.
6. The lid of claim 1 wherein the barb portion has a flat surface, the flat surface extends downwardly from the tip end, the flat surface is adapted for the outer surface of the cup body to smoothly fit therewith.
7. The lid of claim 1, wherein a plurality of splits are defined by the engagement portion, the splits extend axially, the barb portion is divided by the splits into several sections, each section is able to elastically expand outwardly individually.
Type: Application
Filed: Nov 10, 2010
Publication Date: Apr 26, 2012
Inventor: Ching-Wen CHANG (Taichung)
Application Number: 12/943,585
International Classification: B65D 51/18 (20060101);