JP2018187202A - Tumbler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tumbler that is simply structured and can be stably stacked and that has high heat-insulating properties by superimposing it.SOLUTION: The tumbler has a cylindrical side face 12 that is larger in diameter toward an upper part, and has a bottom part 14 that closes the lower end of the side face 12. The opening part 16 of the side face 12 is provided with a bulged part 20 projecting to the inner periphery 12d of the side face 12. A recessed part 18 is provided in the outer periphery 12c in the midway of the side face 12. In the side face 12, with an equal length as the length between the opening part 16 and the recessed part 18, in a state with two tumblers 10 superimposed, the recessed part 18 of up-situated one tumbler 10 is fitted to the bulged part 20 of down-situated the other tumbler 10. Between the outer periphery 12c of the side face 12 of one tumbler 10 and the inside of the inner periphery 12d of the other tumbler 10, there is formed a slight space W.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cup that includes a side surface having a larger diameter at a portion positioned at the upper side, and is capable of vertically stacking a plurality of identical shapes.

  2. Description of the Related Art Conventionally, some cups for beverages have a side surface whose diameter increases toward the upper portion. Such a cup can be compactly accommodated by stacking a plurality of identical shapes vertically when not in use. Conventionally, there have been various devices for stacking up and down.

  The cup disclosed in Patent Document 1 includes a disk-shaped bottom, an outer wall that rises from the outer peripheral edge of the bottom, and an engagement protrusion that rises from the inner peripheral edge of the bottom. The outer wall is formed in the shape of a truncated cone that extends toward the upper part, and the engaging projection is formed in the shape of a truncated cone that contracts toward the upper part. The inclination angle of the engaging protrusion is set larger than the inclination angle of the outer wall. For this reason, when two cups are stacked one above the other by engaging their respective engagement protrusions, a gap is formed between the respective outer walls and the two do not contact each other. According to this cup, the outer wall of the lower cup and the outer wall of the upper cup do not come into contact with each other, and can be prevented from being damaged or cracked.

  The paper cup disclosed in Patent Document 2 has a frame portion that protrudes in a ring shape on the outer peripheral side of the opening edge portion of the cup body, and is configured to fit a plurality of frames in a stacked manner. The cup is provided with one or more protrusions protruding from the wall surface at a lower portion of the frame portion of the peripheral wall of the cup body. When multiple paper cups are stacked in a mated state, the tip of the protrusion protruding from the peripheral wall surface of the cup body of one paper cup abuts on the peripheral wall surface of another adjacent paper cup, creating a gap. And it can avoid becoming a perfect contact state. These paper cups are stored in a paper cup holder, such as a drinking water supply station, with a plurality of openings facing upward, and are fitted and stacked in the vertical direction, and are used by sequentially pulling downward from the bottom end. . At this time, since the frictional resistance between the paper cups is reduced, it is possible to solve the problem that when one paper cup is taken out, another paper cup is taken out at the same time.

  Moreover, an outer container and an inner container are overlapped via a heat insulating space, and some have heat insulating properties. The cup for eating and drinking disclosed in Patent Document 3 is composed of an inner container made of heat-resistant glass and spread upward, and an outer container made of a synthetic resin that forms a heat insulating space outside the inner container and is detachably fitted. Become. The inner container has annular engagement grooves at two locations on the upper and lower sides of the outer periphery, and a stepped portion is provided around the upper edge. The outer container has an engagement protrusion on the inner periphery that elastically engages with each engagement groove of the inner container, and the upper end terminates immediately below the step portion of the inner container. Since this heat-insulating space is provided between the inner container and the outer container, the cup for eating and drinking can be held with bare hands even if the contents are hot, and the contents are difficult to cool.

JP 2010-35972 A JP 2000-302132 A JP 2008-213930 A

  In the case of the above-described background art, the cups of Patent Document 1 and the paper cups of Patent Document 2 are provided so that a gap is provided when a plurality of sheets are stacked so as not to be scratched and easily removed. It is not considered to use a beverage in a state and to impart heat insulation properties. The cup for eating and drinking of Patent Document 3 can be used by putting beverages and foods in a state where the inner container and the outer container are stacked. However, the inner container and the outer container are different in material and shape, and are troublesome to manufacture and costly. It will take.

  The present invention has been made in view of the above problems of the background art, and an object thereof is to provide a cup that can be stably laminated with a simple structure and has high heat insulation properties when used repeatedly. .

  The present invention is a cup having a cylindrical side surface whose diameter increases toward the upper part, and a bottom portion that closes the lower end portion of the side surface, and the opening on the side surface opposite to the bottom portion has A bulging portion protruding from the inner peripheral surface of the side surface, a concave portion is provided in the outer peripheral surface in the middle of the side surface, and the side surface has a length equal to the length between the opening portion and the concave portion. In a state where the two cups are overlapped with each other, the bulging portion of the other cup located below is fitted and locked to the concave portion of the one cup located above, A cup in which a slight gap is formed between the outer peripheral surface of the side surface of the cup and the inner side of the inner peripheral surface of the other cup, and a heat insulating air layer is provided.

  The side surface of the cup has a truncated cone shape. A portion of the side surface between the recess and the opening is a cylindrical portion having a constant cross-sectional shape that intersects the depth direction of the side surface.

  The bulging portion and the concave portion are provided to make a round in a direction intersecting the depth direction of the side surface, and are substantially parallel to each other.

  A lid member is detachably attached to the opening, and the lid member has a top plate for closing the opening, and a peripheral portion of the opening of the cup is provided on a peripheral portion of the top plate. The fitting groove part which covers is formed in an annular shape, and the inner peripheral surface of the fitting groove part is formed in a shape for fitting the bulging part provided in the opening.

  The cup of the present invention can be used by overlapping two pieces of the same shape with a simple structure. When two cups are used overlappingly, an air layer for heat insulation is formed and has high heat insulating properties. The stacked cups are locked by fitting the bulging portion of one cup into the recess of the other cup, and are safe without being accidentally removed when drinking.

It is a longitudinal cross-sectional view which shows the state which uses two cups of one Embodiment of this invention in piles. FIG. 2 is an enlarged vertical sectional view of a portion A in FIG. 1. It is a front view of the cup of this embodiment. It is a longitudinal cross-sectional view of the cup of this embodiment. It is a front view which shows the state which attached the lid | cover of the cup of this embodiment. It is a longitudinal cross-sectional view which shows the state which attached the lid | cover of the cup of this embodiment. It is a top view which shows the state which attached the lid | cover of the cup of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7 show an embodiment of the present invention. A cup 10 according to this embodiment is formed of a synthetic resin such as polypropylene, and has a cylindrical shape of a truncated cone whose diameter increases toward an upper portion. A side surface 12 and a bottom portion 14 that closes a lower end portion of the side surface 12 are formed. The side surface 12 and the bottom portion 14 have substantially the same thickness, and are gently and continuously formed. The upper side of the side surface 12, that is, the side opposite to the bottom 14 is an opening 16 for containing a beverage.

  A portion of the side surface 12 from the opening 16 to the lower side of the predetermined length L1 becomes a cylindrical portion 12a having a constant cross-sectional shape intersecting the depth direction of the side surface 12. L1 is, for example, about 20% of the depth of the side surface 12. At the lower end of the cylindrical portion 12a, there is provided a recess 18 that opens downward by shallowly cutting the outer peripheral surface 12c of the side surface 12, and the recess 18 is provided around the lower end of the cylindrical portion 12a. The diameter of the recess 18 is substantially equal to the inner diameter of a later-described bulge 20 of the opening 16, and the bulge 20 is fitted into the recess 18 and locked when the cups 10 having the same shape are stacked one above the other. The upper end portion of the concave portion 18 is a stepped portion continuous to the cylindrical portion 12a, and the cylindrical portion 12a has a diameter larger than the inner diameter of the bulging portion 20, so that when the cup 10 having the same shape is stacked up and down, The bulging part 20 contacts and does not overlap any more.

  A portion of the side surface 12 that is closer to the bottom portion 14 than the recess portion 18 is a truncated cone-shaped tapered portion 12 b that decreases in diameter as it approaches the bottom portion 14. As shown in FIG. 2, the inclination angle of the taper portion 12b is such that the outer peripheral surface 12c of the side surface 12 is slightly closer to the inner side of the inner peripheral surface 12d as the length L1 between the opening portion 16 and the concave portion 18 advances downward. When the thickness of the cup 10 in the horizontal direction is t, W = L2-t.

  A bulging portion 20 is provided around the periphery of the opening portion 16. The cross-sectional shape of the bulging portion 20 in the diameter direction of the opening 16 is a deformed circular cross-sectional shape having a width larger than the thickness of the side surface 12 and protrudes on both sides of the outer peripheral surface 12c and the inner peripheral surface 12d of the side surface 12. ing. The curvature of the portion protruding to the inner peripheral surface 12d side of the side surface 12 is slightly larger than the curvature of the portion protruding to the outer peripheral surface 12c side, and can be fitted into the recess 18 slightly larger than the curvature of the recess 18. Shape.

  As shown in FIGS. 5 to 7, a lid member 22 is detachably attached to the opening 16 of the cup 10. The lid member 22 is made of a synthetic resin such as polyethylene and has a circular top plate 24, and the top plate 24 is sized to cover the opening 16 of the cup 10. A short cylindrical outer cylinder portion 26 is provided around the periphery of the top plate 24. An inner cylinder part 28 having a slightly smaller diameter than the outer cylinder part 26 is provided inside the outer cylinder part 26 concentrically with the outer cylinder part 26. The inner cylinder part 28 has a shorter protruding length from the top plate 24 than the outer cylinder part 26. The outer cylinder portion 26 is in close contact with the outer peripheral surface 12c of the side surface 12 when the lid member 22 is attached to the cup 10, and the inner cylinder portion 28 is in close contact with the inner peripheral surface 12d of the side surface 12 and becomes liquid-tight. An annular space surrounded by the outer cylindrical portion 26, the top plate 24, and the inner cylindrical portion 28 and opening downward becomes a fitting groove portion 29 that covers the periphery of the opening portion 16 of the cup 10, and the vicinity of the top plate 24 of the fitting groove portion 29. This inner peripheral surface is shaped to fit the bulging portion 20 provided at the peripheral edge of the opening 16. Further, the lower end portion of the outer cylinder portion 26 on the side opposite to the top plate 24 extends slightly in the direction away from the side surface 12 below the outer peripheral surface 12 c of the bulging portion 20.

  The top plate 24 of the lid member 22 is provided with a drinking mouth 30 at one place on the peripheral edge. The drinking mouth 30 is provided with a guide piece 32 that rises from the top plate 24 along the peripheral edge of the top plate 24, and the inside of the guide piece 32 has a drinking mouth surface 34 that is higher than the top plate 24 in parallel to the top plate 24. Is provided. A recess 35 is provided at the center of the drinking surface 34 adjacent to the center of the guide piece 32, and a through hole 36 penetrating the top plate 24 is formed at the center of the recess 35. The through hole 36 has an elliptical shape that is long in the circumferential direction of the top plate 24, and is provided with a ventilation slit extending from the center of the through hole 36 toward the center of the top plate 24 by a predetermined length.

  Next, the usage method of the cup 10 of this embodiment is demonstrated. Put the drink in the cup 10. And if the cover member 22 is attached to the opening part 16 of the cup 10, it will become difficult to spill and it will become easy to drink. When the beverage is hot, as shown in FIG. 1, two cups 10 having the same shape are placed in the opening 16 of one cup 10 and the other cup 10 is inserted from the bottom 14, and stacked one above the other. When overlapped, the portion of the opening 16 of the lower cup 10 on the bulging portion 20 inner peripheral surface 12d side is fitted and locked in the recess 18 of the upper cup 10 to prevent further overlapping. At this time, a gap W is formed between the side surfaces 12 of the upper and lower cups 10 as shown in FIG. 2, and a heat insulating air layer 38 is provided. A gap is also generated between the bottom portions 14 of the upper and lower cups 10, and a heat insulating air layer 40 continuous to the heat insulating air layer 38 is provided. The heat insulating air layers 38 and 40 are almost sealed by fitting the concave portion 18 and the bulging portion 20, and are less likely to exchange heat due to the flow of outside air. The heat insulating air layer 40 may be thicker than the heat insulating air layer 38, and the small items 42 may be accommodated in this space. The accessory 42 may be anything such as dough, toys, sweets, and the like.

  According to the cup 10 of this embodiment, two pieces of the same shape can be used with a simple structure, and when the two pieces are used, the heat insulating air layers 38 and 40 are formed and have high heat insulating properties. Is. Thereby, a hot drink is hard to cool, and even if it holds the cup 10 with bare hands, it is not hot. In addition, a cold beverage does not become slimy, it is not cold even if it is held with bare hands, and no condensation occurs on the surface of the cup 10. The heat insulating air layers 38 and 40 are almost sealed by engaging the recessed portion 18 and the bulging portion 20, and are less likely to be mixed with heat or exchange heat, and have high heat retention. In addition, the hot air of the heat insulating air layers 38 and 40 is not applied to the user's hand or face, which is safe.

  When the cups 10 are stacked one on top of the other, the bulging portion 20 is simply attached by being fitted into the recess 18 and is simple and does not require a connecting member. When the cups 10 are stacked one above the other, the cylindrical portion 12a having a constant diameter is continuous in the vertical direction, the appearance is clean, and there is no sense of incongruity. Since the bulging portion 20 is fitted and locked in the concave portion of the concave portion 18, the cup 10 stacked vertically is safe without being inadvertently removed when drinking a beverage. Moreover, at the time of storage and transportation, two or more can be stacked and stored compactly, and will not come off due to vibration, and storage and transportation are easy. When removing the upper and lower cups 10, they can be easily removed by pulling them up and down with a certain force.

  One cup 10 can be used alone. The cup 10 does not need to be changed in shape up and down, is easy to manufacture, and does not need to check the order of stacking up and down, so that the work efficiency when stacking is good. The insulating air layer 40 between the bottom portions 14 can contain small items 42 and can also include small items 42 for sales promotion. Since the cups 10 stacked on top and bottom do not come into contact with each other, the side faces 12 are not damaged, and a beautiful appearance can be maintained.

  The lid member 22 is formed so that the fitting groove 29 is shaped to fit the bulging portion 20 of the cup 10, so that even if the bulging portion 20 having a large width is provided on the cup 10, the lid member 22 is attached in close contact. Can prevent the leakage of beverage. The lid member 22 is provided with a drinking mouth 30 for easy drinking.

  The cup of the present invention is not limited to the above embodiment, and the size and position of the bulging portion and the recessed portion can be appropriately changed, and can be reliably locked together and easily removed. It ’s fine. The shape of the lid member may be other than the above as long as it does not leak and is easy to drink. The size, shape, depth, and the like of the side surface and bottom can be changed as appropriate, and can be selected according to the type of beverage. In addition to beverages, various items such as noodles and yogurt can be used. The material of the cup may be made of metal or glass in addition to the synthetic resin.

DESCRIPTION OF SYMBOLS 10 Cup 12 Side surface 12a Cylindrical part 12c Outer peripheral surface 12d Inner peripheral surface 14 Bottom part 16 Opening part 18 Recessed part 20 Enlarged part 22 Lid member 24 Top plate 29 Fitting groove part 38 Heat insulation air layer

Claims (5)

A cup having a cylindrical side surface whose diameter increases toward the upper part and a bottom part for closing the lower end of the side surface,
The opening on the side of the side opposite to the bottom is provided with a bulging portion that protrudes on the inner peripheral surface of the side, and a recess is provided on the outer peripheral surface in the middle of the side. And the bulging portion of the other cup located below fits into the concave portion of the one cup located above, with a length equal to the length between the recess and the overlapped portion. A cup which is locked and has a heat-insulating air layer formed by forming a slight gap between the outer peripheral surface of the side surface of the one cup and the inner side of the inner peripheral surface of the other cup.   The cup according to claim 1, wherein the side surface of the cup has a truncated cone shape.   2. The cup according to claim 1, wherein a portion of the side surface between the concave portion and the opening is a cylindrical portion having a constant cross-sectional shape intersecting the depth direction of the side surface.   The cup according to claim 1, wherein the bulging portion and the concave portion are provided so as to make a round in a direction intersecting the depth direction of the side surface and are substantially parallel to each other.   A lid member is detachably attached to the opening, and the lid member has a top plate for closing the opening, and the peripheral edge of the top plate is provided with the peripheral edge of the cup. The cup according to claim 1, wherein the fitting groove portion to be covered is provided in an annular shape, and the inner peripheral surface of the fitting groove portion is formed in a shape for fitting the bulging portion provided in the opening.

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