JPH04361710A - Heat insulated cup - Google Patents

Abstract

PURPOSE:To provide heat insulated cup, which can be grasped by a hand easily and stably even though it accommodates hot drink, does not occupy a large space over the height even when a plurality of such cups are stacked, and which can be manufactured at a low cost. CONSTITUTION:A cup concerned is formed from a thermoplastic resin and has a skirt 3, which is folded back outward from the circular appex 2 of the main trunk 1 of cup and stretches downward while widening gradually in the form of a truncated cone, wherein the periphery of this skit part is provided with a plurality of ridges 31 or grooves in an arrangement having level difference. The ridge may favorably be constructed spirally from over the peripheral surface of the skirt 3 downward along the circumference, or be formed ring- shapedly in parallel with the circular appex 2 along the circumference on the peripheral surface of the skirt 3. It is recommendable that the peripheral surface of each ridge is parallel with the center axis of the cup. This provision of skirt part 3 permits certain grasp of cup, because the heat of the drink is not conducted directly to the hand and because of being free from risk of slipping- off from hand owing to the ridges and/or grooves provided at the surface of the skirt 3.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a cup for serving beverages such as tea, coffee, black tea, soup, etc., and is particularly effective for cups for serving beverages with hot contents as described above. .

0002

[Prior Art] Conventionally, cups for serving hot beverages have generally been provided, such as cups with handles, cups whose material itself has heat insulating properties such as foamed polyethylene cups, and cups with heat insulating properties as a double-walled structure. There is. Further, Japanese Patent Application Laid-open No. 63-277016 discloses a cup having a portion that extends outward from the circular top of the cup and is folded back downward.

However, the above-mentioned cup with a handle,
When holding or storing foamed polyethylene cups, double-walled cups, etc., these cups cannot be stacked or have thick side walls, resulting in a high stacking height, which limits storage space and makes stacking difficult. It has drawbacks such as being unstable and prone to falling over.

[0004]Furthermore, foldable paper cups with handles have been provided, but the manufacturing process is complicated, as the cup body and handle are first manufactured, and then the handle is attached to the cup body, resulting in high manufacturing costs. It has disadvantages such as:

[0005] The folded cup described above is suitable for serving hot beverages because the folded portion does not come into direct contact with the hot contents, but when the cup is filled with a beverage and held in the hand, the folded part It consists of a conical part that expands downward and a cylindrical part, but its surface is relatively smooth, so it has the disadvantage of being slippery. Furthermore, if the height of the cylindrical portion is increased in order to be able to hold the device in a stable state, the stacking height increases accordingly, which increases the storage space, which is not practical.

[0006]

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems, and its purpose is to make the contents easy to hold even when they are hot.
To provide a heat insulating cup made of thermoplastic synthetic resin which has many advantages, such as not slipping out of the hand, being bulky even when stacked, having excellent storage properties, and being inexpensive to manufacture.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the heat insulating cup according to the present invention is made of thermoplastic synthetic resin, and is folded outward from the circular top of the main body of the cup to form a truncated conical shape. The cup has a skirt portion that gradually widens and extends downward, and is characterized in that a plurality of stepped ridges or grooves are formed on the outer peripheral surface of the skirt portion.

[0008] The protrusion may be spirally formed along the circumferential direction from the upper side to the lower side of the outer peripheral surface of the skirt portion;
It is preferable to adopt a structure having an annular shape parallel to the circular top portion along the circumferential direction of the outer peripheral surface of the skirt portion. In addition, in a cross section that includes the central axis of the cup, it is recommended that the contour line representing the outer peripheral surface of each protrusion be parallel to the central axis of the cup. It is also recommended to form fine unevenness lines along the extending direction.

Furthermore, a stacking step is formed in the main body of the cup so that when the cups are stacked, the protrusion or groove does not contact and deform the skirts of other cups above and below it. It is also recommended to create a stacking step at the bottom of the skirt.

0010

[Function] When using the insulating cup according to the present invention configured as described above, when a hot beverage is poured into the cup and the folded skirt portion is held in the hand, the heat of the beverage can be held without being directly transferred to the hand. Moreover, because of the protrusions and/or grooves provided on the surface of the skirt portion, the beverage can be firmly grasped without slipping from the hand, providing a sense of stability when serving the beverage.

[0011] Furthermore, the outer circumferential surface of the protrusion with the above-mentioned steps is
The heat insulating cup of the present invention is formed by sheet thermoforming or injection molding by forming the contour line representing the outer peripheral surface of each protrusion to be parallel to the central axis of the cup in a cross section including the central axis of the cup. It is easy to pull out from a mold with a normal structure, and there is no need to use a complicated mold such as a mold with a slide core, making mass production possible economically. When the cups are stacked, a protrusion with a step as described above is provided at the lowest part of the skirt portion so that the protrusion with the above-mentioned step does not come into contact with the cups above and below the cups by maintaining an appropriate distance between them. It can be used as a step. Or also,
A similar objective can be achieved by forming stacking steps in the main body of the cup. The heat insulating cup of the present invention can be easily manufactured by general molding processes for thermoplastic synthetic resins such as injection molding and sheet thermoforming.

0012

[Embodiments] Hereinafter, embodiments of the present invention will be explained in detail based on the drawings. Embodiment 1 FIG. 1 shows a front view of an embodiment of a heat insulating cup according to the present invention, and FIG. 2 shows a cross-sectional view including the central axis, that is, a longitudinal center cross-sectional view. This insulated cup has a main body (1
) A skirt part (3) that is folded back outward from the circular top part (2) of the skirt and extends downward while gradually expanding into a truncated conical shape.
A plurality of stepped spiral protrusions (31, 31) are formed on the outer surface of the skirt portion (3), and these protrusions (31, 31) are formed when the cups are stacked.
A stacking step (11) is formed at the lower bottom of the main cup body (1) so that the main cup body (1) does not come into contact with the inner surface of the skirt of the cup above. When pouring a hot beverage into this cup and holding it in your hand to serve the beverage, the stepped ridges (31, 31) made it possible to grip the cup stably and without feeling the heat of the contents. .

[0013]The outer circumferential surface of each of the spiral protrusions (31, 31) on the skirt portion of the cup is shaped like each protrusion, as shown in FIG. 2 (a sectional view including the central axis of the cup). (31, 31) so that the contour line representing the outer peripheral surface is substantially parallel to the central axis (10) of the cup (i.e., the outer peripheral surface of the protrusion is vertical when the cup is placed horizontally). ), which makes it easy to pull out the insulating cup of the present invention from a mold with a normal structure when molding it by sheet thermoforming or injection molding, and there is no need to use a complex mold such as a mold with a slide core. In addition, it is possible to economically mass-produce the cup without any problems, and it also has the effect of preventing the cup from slipping when held in the hand compared to the conventional truncated conical skirt portion.

Embodiment 2 FIG. 3 shows a front view of another embodiment of the heat insulating cup according to the present invention, and FIG. 4 shows a longitudinal sectional view thereof. This insulating cup also has a circular top (
2) has a skirt part (3) that is folded back outward from the base and extends downward while gradually expanding into a truncated conical shape, and the outer surface of the skirt part (3) has a plurality of stepped spiral protrusions (32 , 32) are formed at a certain distance from each other, that is, the protrusions (32) and the sloped surfaces (30) of the skirt portion are formed alternately, and when stacking the cups, these protrusions are A stacking step (12) is formed above the main cup body (1) to prevent the strips (32, 32) from coming into contact with the inner surface of the skirt of the cup above. When you pour a hot beverage into this cup and hold it in your hand to serve the beverage, the stepped ridges (32, 32)
This made it possible to hold the cup stably and without feeling the heat of the contents.

[0015] Also in this cup, the outer peripheral surface of each spiral protrusion (32, 32) of the skirt portion is as follows:
As shown in FIG. 4, the contour line representing the outer peripheral surface of each of the protrusions (32, 32) is formed to be substantially parallel to the central axis (10) of the cup. When molding the heat insulating cup by sheet thermoforming or injection molding, it is easy to remove from a mold with a normal structure, and there is no need to use complicated molds such as molds with slide cores, making mass production possible economically. When the cup is held in the hand, it is more effective in preventing the cup from slipping off than the conventional truncated conical skirt section.

Embodiment 3 FIGS. 5 and 6 show that the circular top (2) of the main body of the cup (1) is formed along the circumferential direction of the outer circumferential surface of the skirt (3).
This shows an embodiment in which a plurality of annular protrusions (33, 33) are formed in parallel with the protrusions (33, 33). Uneven stripes (
330) is formed. Even in this cup,
The outer peripheral surface of the annular protrusion (33, 33) is formed to be substantially parallel to the central axis (10) of the cup, as shown in FIG. easily molded,
Mass production is now possible. When pouring a hot beverage into this cup and holding it in your hand to serve the beverage, the stepped ridges (33, 33) and the uneven ridges (330) on its surface
This made it possible to hold the cup stably without it slipping off and without feeling the heat of the contents. In the case of this embodiment, the lowest protrusion among the plurality of annular protrusions (33, 33) serves as a step for stacking cups.

Embodiment 4 FIGS. 7 and 8 show a front view and a longitudinal sectional view of yet another embodiment of the heat insulating cup according to the present invention. This insulating cup also has a circular top (
2) It has a skirt part (3) that is folded back outward from the base and extends downward while gradually expanding into a truncated conical shape, and the outer surface of the skirt part (3) has a plurality of grooves (34, 34).
At the same time, an annular protrusion (35) having a step for stacking is formed at the bottom of the skirt portion (3). When pouring a hot beverage into this cup and holding it in your hand to serve the beverage, use the portion of the skirt portion (3) where the plurality of grooves (34, 34) are formed or the stepped ridge (35). By holding it, I was able to grasp it stably and without feeling the heat of the contents. In this case as well, the outer circumferential surface of the annular protrusion (35) is formed to be substantially parallel to the central axis (10) of the cup, as shown in FIG. It is now possible to easily mold and mass-produce using a mold.

[0018]

[Effects of the Invention] Since the present invention is constructed as described above,
The insulating cup according to the present invention provides a cup with an unprecedented structure suitable for serving hot beverages, and is suitable for use as a cup for serving hot beverages onboard aircraft, trains, buses, etc. We are confident that this invention has many useful properties, such as its small bulk during storage, its stability when serving drinks, the fact that the drinks do not feel hot, and its ability to be mass-produced at a low cost. be. It should be noted that the present invention is not limited to the above-mentioned embodiments,
The design can be freely changed within the scope of the purpose, and the present invention encompasses all modifications that can be easily conceived by those skilled in the art from the above-described embodiments.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of a heat insulating cup according to the present invention.

FIG. 2 is a vertical mid-sectional view of the heat insulating cup shown in FIG. 1;

FIG. 3 is a front view of another embodiment of the insulating cup according to the present invention.

FIG. 4 is a longitudinal center cross-sectional view of the heat insulating cup shown in FIG. 3;

FIG. 5 is a front view of yet another embodiment of the heat insulating cup according to the present invention.

FIG. 6 is a longitudinal center cross-sectional view of the heat insulating cup shown in FIG. 5;

FIG. 7 is a front view of yet another embodiment of the heat insulating cup according to the present invention.

8 is a longitudinal mid-sectional view of the heat insulating cup shown in FIG. 7. FIG.

[Explanation of symbols]

1 Main body 11, 12　Steps for stacking 2 Circular top 3 Skirt part 31, 32 Spiral protrusion 33 Circular protrusion 34 Concave groove 35 Circular protrusion

Claims (7)

[Claims] 1. A cup made of thermoplastic synthetic resin and having a skirt portion (3) that is folded outward from a circular top portion (2) of a main body portion (1) of the cup and extends downward while gradually expanding into a truncated cone shape. In the above skirt part (
3) A plurality of protrusions (31, 32) having steps on the outer circumferential surface of the
, 33) or a concave groove (34). 2. The heat insulating cup according to claim 1, wherein the protrusions (31, 32) are spirally formed along the circumferential direction from the upper side to the lower side of the outer peripheral surface of the skirt portion (3). Claim 3: The protrusion (33) is a skirt portion (3).
The heat insulating cup according to claim 1, which is formed in an annular shape parallel to the circular top portion (2) along the circumferential direction of the outer peripheral surface of the cup. Claim 4: In a cross section including the central axis of the cup,
The heat insulating cup according to any one of claims 1 to 3, wherein a contour line representing the outer peripheral surface of each of the protrusions (31, 32, 33) is parallel to the central axis (10) of the cup. 5. The heat insulating cup according to claim 1, wherein the outer peripheral surface of the protrusion is formed with fine unevenness lines (330) along the extending direction of the protrusion. [Claim 6] When the cups are stacked, the protrusion (
31, 32, 33) or the concave groove (34) from contacting and deforming the skirt portions of other cups above and below it,
The main body of the cup (1) has a step for stacking (11, 1
2) The insulating cup according to any one of claims 1 to 5, comprising: [Claim 7] When the cups are stacked, the protrusion (
31, 32, 33) or the concave groove (34) from contacting and deforming the skirt portions of other cups above and below it,
There is a step (35) at the bottom of the skirt part (3) for stacking.
) The heat insulating cup according to any one of claims 1 to 5.