Drinking cup lid

Abstract

To provide a lid for a beverage cup in which a drinking spout is opened and closed by rotating an outer lid fitted on the inner lid relative to the inner lid and aligning or shifting an opening / closing opening formed on the top surface of the outer lid with the position of a drinking spout formed on the top surface of the inner lid, and which facilitates alignment of the opening / closing opening of the outer lid with the drinking spout of the inner lid and prevents a beverage in the cup from entering a gap between the outer lid and the inner lid when drinking with the drinking spout in an open state. [Solution] This is a lid for a beverage cup, consisting of an inner lid 1 that fits onto the edge of the opening of a cylindrical cup with an open top, and an outer lid 2 that is fitted onto the inner lid 1 so that it can slide and rotate. A drinking spout 13 is partially formed in the top plate 12 of the inner lid 1, and an opening 23 is partially formed in the top plate 22 of the outer lid 2. The drinking spout 13 is opened and closed by sliding and rotating the outer lid 2 relative to the inner lid 1. The opening 23 of the outer lid 2 is sized so that when the outer lid 2 is slidably rotated relative to the inner lid 1 to fully open the drinking spout 13, the entire periphery of the opening 23 is positioned outside the periphery of the drinking spout 13.

Description

[Technical Field]

[0001] This invention relates to a lid that is removably attached to a drinking cup. [Background technology]

[0002] Paper or synthetic resin cups have traditionally been used when selling takeout beverages such as hot coffee at restaurants, convenience stores, vending machines, etc., and these cups typically have detachable lids attached to the rim of their openings to prevent the beverage from spilling or foreign objects from getting into the cup when it is being carried. Attaching a lid to a cup can be a hassle, as the lid must be removed each time the beverage is consumed and then replaced when the beverage is not consumed. To address this, lids have been proposed that have an openable drinking spout on part of the lid, which can be opened and closed to allow the beverage to be consumed without removing the lid from the cup.

[0003] For example, Japanese Patent Laid-Open Publication No. 6-210438 proposes a lid for a drinking cup that includes an inner lid with a drinking spout formed in a top plate that is detachably attached to the opening edge of the cup, and an outer lid that is rotatably fitted to the outside of the inner lid and has an opening formed in the top plate that is the same size as the drinking spout of the inner lid. With this drinking cup lid, the outer lid fitted to the outside of the inner lid can be rotated relative to the inner lid to open the drinking spout by aligning the opening formed in the outer lid top plate with the position of the drinking spout formed in the inner lid top plate, and the drinking spout can be closed by aligning the part of the outer lid top plate without an opening with the position of the drinking spout of the inner lid.

[0004] However, in this beverage cup lid, the opening formed in the outer lid top plate and the drinking spout formed in the inner lid top plate are the same size. Therefore, when the opening of the outer lid is aligned with the drinking spout of the inner lid and fully opened, the boundary between the overlapping outer lid top plate and inner lid top plate is exposed on the periphery of the open drinking spout. Therefore, when drinking a beverage using the drinking spout, the beverage is likely to seep into the gap between the outer lid and the inner lid through this boundary. Leaving the beverage in this state between the outer lid and the inner lid is not only unsanitary, but also causes problems such as the outer lid and the inner lid becoming stuck together when the beverage dries, making it difficult for the outer lid to rotate relative to the inner lid (this is particularly likely to occur when the beverage contains sugar). Furthermore, if the opening of the outer lid and the drinking spout of the inner lid are not perfectly aligned when the drinking spout is open, the beverage is more likely to seep into the gap between the outer lid and the inner lid as it passes through the drinking spout. This requires perfectly aligning the opening of the outer lid with the drinking spout of the inner lid, which is tedious. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 6-210438 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] The object of this invention is to provide a lid for a beverage cup in which the drinking spout is opened and closed by rotating the outer lid fitted over the inner lid relative to the inner lid and aligning or shifting the opening formed in the outer lid top plate with the drinking spout formed in the inner lid top plate. The object of this invention is to provide a lid for a beverage cup in which, when drinking with the drinking spout open, the beverage inside the cup is less likely to seep into the gap between the outer lid and the inner lid, and in which it is easy to align the opening of the outer lid with the drinking spout of the inner lid. [Means for solving the problem]

[0007] The lid for a drinking cup of this invention consists of an inner lid that fits onto the edge of the opening of a cylindrical cup with an open top, and an outer lid that is fitted onto the inside of the inner lid so that it can slide and rotate relative to the inner lid.A drinking spout is partially formed on the top plate of the inner lid, and an opening is partially formed on the top plate of the outer lid.The drinking spout is opened and closed by sliding and rotating the outer lid relative to the inner lid.The opening of the outer lid is sized so that when the outer lid is slidably rotated relative to the inner lid to fully open the drinking spout, the entire periphery of the opening is positioned outside the periphery of the drinking spout.

[0008] The invention of claim 2 is characterized in that, in the invention of claim 1, the cup fitting surface of the inner lid that fits onto the opening edge of the cylindrical cup is processed with fine irregularities, and the front surface of the inner lid and the back surface of the outer lid are made smooth.

[0009] The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the outer surface of the outer lid is given a fine uneven finish. [Effects of the Invention]

[0010] According to this device, the lid for a beverage cup consists of an inner lid that fits onto the edge of the opening of a cylindrical cup with an open top, and an outer lid that is fitted onto the inner lid so that it can slide and rotate relative to the inner lid.A drinking spout is partially formed in the top plate of the inner lid, and an opening is partially formed in the top plate of the outer lid.The drinking spout is opened and closed by sliding and rotating the outer lid relative to the inner lid.The opening in the outer lid is formed to a size that when the outer lid is slidably rotated relative to the inner lid to fully open the drinking spout, the entire periphery of the opening is located outside the periphery of the drinking spout.Therefore, when the outer lid is slidably rotated to fully open the drinking spout, the boundary between the overlapping outer lid top plate and inner lid top plate is not exposed on the periphery of the open drinking spout, but appears outside the periphery of the drinking spout and on the front side of the inner lid. As a result, when drinking a beverage using the fully open drinking spout, the beverage passing through the drinking spout is less likely to come into contact with the boundary between the inner lid top plates, thereby minimizing the possibility of the beverage seeping into the gap between the inner lid and the outer lid through this boundary. Furthermore, because the opening in the outer lid is larger than the drinking spout in the inner lid, when sliding and rotating the outer lid to fully open the drinking spout, it is not necessary to perfectly align the positions of the opening in the outer lid and the drinking spout in the inner lid, and alignment can be easily achieved. In other words, if the opening in the outer lid and the drinking spout in the inner lid were the same size, fine adjustments would be required to perfectly align the opening in the outer lid and the drinking spout in the inner lid when attempting to fully open the drinking spout. However, because the opening in the outer lid is larger than the drinking spout in the inner lid, the drinking spout can be fully opened without fine adjustments.

[0011] According to the invention of claim 2, the cup-fitting surface of the inner lid that fits onto the cylindrical cup opening rim is given a finely textured finish, and the front surface of the inner lid and the back surface of the outer lid are made smooth, which increases the frictional resistance of the cup-fitting surface of the inner lid, making it difficult for the inner lid fitted onto the cup opening rim to slide and rotate relative to the cup opening rim, and reduces the frictional resistance at the contact surface between the inner and outer lids, making it easier for the outer lid fitted onto the inner lid to slide and rotate relative to the inner lid. This prevents the inner lid from rotating together with the outer lid when it is slid and rotated.

[0012] According to the invention of claim 3, the outer surface of the outer lid is given a finely textured finish, which makes it less slippery when holding the surface of the outer lid in your hand and sliding it around, making it easier to rotate. [Brief explanation of the drawings]

[0013] [Figure 1] A diagram showing the outline of this invention [Figure 2] A top view of the same bottle with the spout fully open. [Figure 3] Enlarged end view of the AA portion BB in Figure 2. [Figure 4] Front view of the same with the outer and inner lids separated [Figure 5] A perspective view of the inner lid [Figure 6] A perspective view of the outer lid [Figure 7] FIG. 10 is a perspective view showing an outline of the state in which the device is attached to a drinking cup. DETAILED DESCRIPTION OF THE INVENTION

[0014] 1 to 6 are diagrams showing an outline of an embodiment of this invention. The lid for a drinking cup of this invention is composed of an inner lid 1 that is detachably fitted to the opening edge C1 of a substantially cylindrical drinking cup C with an open top, and an outer lid 2 that is detachably fitted onto the inner lid 1 so as to be slidably and rotatably slidably.

[0015] The inner lid 1 is made by molding a synthetic resin sheet into a flat cylindrical shape that is open at the bottom and has a generally convex shape in side view, and is equipped with a cup fitting portion 11 into which the opening edge of a beverage cup is detachably fitted, and a top plate 12, with a drinking spout 13 formed on the peripheral edge of the top plate 12. The back (bottom) surface of the inner lid 1 is treated with a fine, silk-like texture over the entire surface, including the fitting surface of the cup fitting portion 11, to make it less slippery, while the front (flat) surface of the inner lid 1 is composed entirely of a smooth surface to make it more slippery.

[0016] The outer lid 2 is made by molding a synthetic resin sheet into a flat cylindrical shape that is generally convex in side view and opens downward, and includes an inner lid locking portion 21 that locks onto the lower edge of the inner lid 1 to maintain the outer lid 2 fitted onto the inner lid 1, and a top plate 22, with an opening 23 formed on the periphery of the top plate 22. This opening 23 is formed larger than the drinking spout 13 of the inner lid 1, so that when the opening 23 is aligned with the drinking spout 13 and the drinking spout 13 is fully open, the entire periphery 23e of the opening 23 is positioned outside the periphery 13e of the drinking spout 13 (see Figures 2 and 3). Furthermore, the entire back (bottom) surface of the outer lid 2 is smooth and slippery, while the entire front (flat) surface is finely textured with a silk-like texture to make it less slippery.

[0017] When the outer lid 2 is fitted onto the inner lid 1, the inner lid 1 fits snugly onto the back (bottom) side of the outer lid 2, with almost the entire front (flat) surface of the inner lid 1 abutting against the back (bottom) surface of the outer lid 2, with almost no gap between the front (flat) surface of the inner lid 1 and the back (bottom) surface of the outer lid 2. When fitted onto the inner lid 1, the outer lid 2 is slidably rotatable relative to the inner lid 1, and the drinking spout 13 can be opened and closed by sliding and rotating the outer lid 2 to align or shift the position of the opening 23 with the position of the drinking spout 13 of the inner lid 1. Here, the opening 23 of the outer lid 2 is formed larger than the drinking spout 13 of the inner lid 1, so that when the drinking spout 13 is fully open, it is sufficient to adjust the position so that the drinking spout 13 fits within the interior of the opening 23, making alignment easy. Furthermore, the cup fitting surface 11 of the inner lid 1 that fits onto the opening edge C1 of the beverage cup C is processed to have fine irregularities, and the front (flat) surface of the inner lid 1 and the back (bottom) surface of the outer lid 2 that come into contact with each other are both formed as smooth surfaces, so the frictional force between the beverage cup opening edge C1 and the cup fitting surface 11 is relatively greater than the frictional force between the front (flat) surface of the inner lid 1 and the back (bottom) surface of the outer lid 2, preventing the inner lid 1 from rotating when the outer lid 2 is slid and rotated. Furthermore, since the front (flat) surface of the outer lid 2 is also processed to have fine irregularities, the outer lid 2 is less likely to slip when slid and rotated, making it easier to operate.

[0018] Furthermore, the opening 23 of the outer lid 2 is sized so that the entire periphery 23e is located outside the periphery 13e of the drinking spout 13 when the drinking spout 13 is fully open, so the boundary between the top plate 12 of the inner lid 1 and the top plate 22 of the outer lid 2 does not appear on the periphery 13e of the drinking spout 13 when fully open. Therefore, when drinking a beverage using the drinking spout 13, the beverage passing through the drinking spout 13 is unlikely to come into contact with the boundary between the inner lid top plate 12 and the outer lid top plate 22, and infiltration between the inner lid top plate 12 and the outer lid top plate 22 can be prevented as much as possible.

[0019] FIG. 7 is a diagram showing an outline of the state in which the beverage cup lid of this invention is attached to a beverage cup C. When using the beverage cup lid of this invention attached to a beverage cup C, the inner lid 1 may be attached to the beverage cup C by fitting the cup fitting portion 11 of the inner lid 1 to the opening edge C1 of a typical beverage cup C as shown in FIG. 7(a) (FIG. 7(b)), and then the outer lid 2 may be placed and fitted onto the inner lid 1 (FIG. 7(c)). Alternatively, the inner lid 1 may be prepared in advance with the outer lid 2 fitted onto it, and then the inner lid 1 with the outer lid 2 fitted onto it may be fitted onto the opening edge C1 of the beverage cup C. FIG. 7(d) shows the state in which the outer lid 2 is slid and rotated to close the drinking spout 13 of the inner lid 1 when attached to the beverage cup C. [Industrial Applicability]

[0020] This invention relates to a lid that is removably attached to a drinking cup, and has industrial applicability. [Explanation of symbols]

[0021] 1 inner lid 11 Cup fitting part 12 Inner lid top plate 13 Mouthpiece 13e Mouth rim 2 Outer lid 21 Inner lid locking portion 22 Outer lid top plate 23 Opening 23e Opening periphery

Claims

1. A lid for a drinking cup, comprising an inner lid fitted onto the edge of an opening of a cylindrical cup with an open top, and an outer lid fitted onto the inner lid so as to be slidably and rotatably supported, wherein a drinking spout is partially formed in the top plate of the inner lid, and an opening is partially formed in the top plate of the outer lid, and the drinking spout is opened and closed by sliding and rotating the outer lid relative to the inner lid, The opening of the outer lid is formed to a size such that when the outer lid is slidably rotated relative to the inner lid to fully open the drinking spout, the entire periphery of the opening is located outside the periphery of the drinking spout. Drinking cup lid.

2. The inner lid's cup fitting surface, which fits onto the cylindrical cup opening edge, is given a finely textured finish. The front surface of the inner lid and the back surface of the outer lid are both smooth surfaces.

2. The lid for a beverage cup according to claim 1.

3. The outer surface of the outer lid has been given a finely textured finish. A lid for a drinking cup according to claim 1 or 2.

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