JPS62179412A - Extensible straw for beverage - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a sliding telescoping straw consisting of an inner straw and an outer straw.

(Prior Art) It is desirable that a straw attached to a beverage container be longer than the depth of the beverage container so that the straw does not fall into the container during drinking. However, since a straw of a length that is not inconvenient for drinking is longer than the beverage container itself, it is difficult to attach it to the beverage container.

Therefore, it becomes necessary to attach a retractable straw that is in a contracted state when attached and expands when drinking.

This retractable straw has a double structure consisting of an inner straw and an outer straw, with the end of the outer straw being reduced in diameter and the end of the inner straw being enlarged at the joint. In the past, the following problems had arisen because the

In other words, a telescopic straw is extended and inserted into a beverage container to drink.
When extending the inner straw, it can be handled correctly if it is extended in the normal extension direction, that is, toward the tip, but if you inadvertently extend it in the opposite direction, the inner straw will be pulled out from the outer straw. In addition, the conventional straws mentioned above had no means to ensure that they were kept in an extended state, that is, to prevent the straw from easily contracting again, so it was difficult to accidentally retract the straw while drinking. There was a risk that if the straw was pushed and contracted, the straw would fall into the container.

Conventionally, in view of the above points, it has been proposed to prevent the inner straw from being easily pulled out from the outer straw, and to maintain the extended state without easily contracting once the straw has been extended. For the purpose of so that it engages with the tip of the outer straw,
Furthermore, an inward stopper is formed near the tip of the outer straw, for example at the boundary between the outer straw body and the reduced diameter portion, to prevent the inner straw from being drawn in.
In order to prevent the straw from being pulled out, a telescopic straw in which a diameter-reduced portion is also formed at the proximal end of the outer straw has been developed and is well known.

(Problems to be Solved by the Invention) This known telescoping straw is very good in that the inner straw does not come out, and in the extended state, the inner straw does not enter into the outer straw and contract. However, since the inward stopper is formed as a simple inward V-shaped protrusion, when the inner straw is pulled out from the outer straw and extended, the diameter of the proximal end of the inner straw expands. It is difficult for the inner straw to get over the stopper, and the inner straw has to be used without smooth engagement to prevent retraction, or the override action of the stopper at the proximal end of the inner straw There was a problem in that the inner straw was not pulled smoothly, and the inner straw was pulled so strongly that it even exceeded the reduced diameter portion at the tip of the outer straw. Furthermore, when the proximal enlarged diameter portion of the inner straw passes over the stopper by strongly pulling the inner straw, the pointed portion at the inner end of the stopper breaks and breaks due to the inward V-shape of the stopper. There was also the problem that air leaked from the torn part, making it impractical.

In addition, in conventionally known telescopic straws, the surface contact between the inner surface of the tapered part of the outer straw and the outer surface of the inner straw, or the inclination angle of the reduced diameter part at the tip of the outer straw and the enlarged diameter part at the rear end of the inner straw. The inclination angles of the straws are made to match, and air leakage, that is, airtightness, is ensured by surface contact by these sloped surfaces when the straw is extended. However, in the case of surface contact on a cylindrical or conical surface, It is extremely difficult to reliably maintain the dimensional accuracy of the product, and the product must be produced without any dimensional errors.When mass-produced, the proportion that can withstand use is extremely low, making it impractical. Ta.

In view of the above-mentioned problems, the present invention is designed to prevent the inner straw from being easily pulled out from the outer straw, and to prevent the straw from easily contracting once it has been extended. Of course, it is necessary to ensure that the proximal end enlarged diameter part of the inner straw can smoothly overcome the inward stopper of the outer straw, and to ensure sufficient airtightness even if there are some errors in dimensions. The purpose of this invention is to provide a new telescopic straw that can be put to practical use even in production.

(Means for Solving the Problem) For this purpose, in this invention, the base end of the inner straw is expanded in diameter to form the enlarged diameter part, the tip of the outer straw is reduced in diameter to form the reduced diameter part, and The tip has a tapered part, and when the inner and outer straws are extended, the proximal enlarged diameter part of the inner straw and the outer straw
Make sure that the reduced diameter part at the tip engages with the outer stroke.
A retractable straw comprising an inward stopper formed near the tip of the straw to prevent the inner straw from being drawn in,
The inward store bar is formed across the reduced diameter part of the outer straw and the outer straw body, and the innermost point 0 of this inward stopper is formed into a curved surface D, and the base end of the outer straw Inner diameter A of the side reduced diameter part.

Inner diameter B of the outer straw main body, inner diameter C1 at the innermost point 0 of the inward stopper, inner diameter D at the starting point P at the reduced diameter part position of the inward stopper, inner diameter E at the tip of the tapered part, inner diameter E at the tip of the enlarged diameter part of the inner III straw. The mutual relationship between the outer diameter F and the outer diameter G of the inner straw body, as well as the mutual relationship between the inclination angle θ1 of the reduced diameter part of the outer straw and the inclination angle θ2 of the enlarged diameter part of the inner straw, are expressed as "B". ≧F>D>E; mG”, “F>C≧GJ, r
F > AJ and "θ1 >θ2", and the outer straw is made of a softer material than the inner straw, and the distal end of the inward stopper is steeply sloped, It is also characterized in that it has a gentle slope and the inward stopper is formed in a vertically elongated shape.

(Example) The present invention will be described in detail below with reference to preferred embodiments shown in the drawings.

As shown, the telescopic straw is composed of an inner straw 1 and an outer straw 3. The tip of the inner straw 1 is cut off diagonally to form a beveled end 5.
This makes it easy to insert the straw into a beverage container and to assemble the telescopic straw by inserting the inner straw 1 into the outer straw 3. Then, the diameter of the proximal end of the inner straw 1, that is, the end on the side of the joint with the outer straw 3 is enlarged to form the enlarged diameter portion 2.

The end of the outer straw 3 on the side where it is connected to the inner straw 1, that is, the tip thereof, is reduced in diameter to form a reduced diameter portion 4, and the tip of the reduced diameter portion 4 is connected in the direction of extension of the inner straw 1. The tapered portion 6 is formed by extending it to an appropriate length. The inner diameter of this tapered portion 6 is approximately the same as the outer diameter of the inner straw 1 to the extent that sliding of the inner straw 1 is not hindered. Therefore, due to the engagement between the enlarged diameter part 2 of the inner straw 1 and the reduced diameter part 4 of the outer straw 3, the inner straw 1 will not fall out from the outer straw 3 when the straw is in the extended state. Moreover, the inner straw
1 is held at the tapered portion 6 of the outer straw 3, so that the inner and outer straws 1, 3 are not bent at their joints.

An inward stopper 7 is located near the tip of the outer straw and extends between the reduced diameter portion 4 and the outer straw body 3 to prevent the inner straw 1 in an extended state from being drawn in.
It is formed. That is, the starting point P of the inward stopper 7 is located at the middle position of the reduced diameter portion 4, and the terminal point Q of the inward stopper 7 is
The points are positioned at appropriate positions on the outer straw body 3.

Further, in the present invention, the innermost end point 0 of this inward stopper 7 is not formed into a sharp shape but is formed by a curved surface. Furthermore, a reduced diameter portion 8 is formed at the base end of the outer straw 3 to prevent the inner straw from being unnecessarily pulled out once inserted.

The present invention is also characterized in that the slope 9 on the proximal side forming the inward stopper 7 of the outer straw 3 is a gentle slope, and the slope 10 on the distal side is steep. Fourth
In the embodiment shown in the figure, the gentle slope 9 is formed into a gentle curved shape, but in the embodiment shown in FIG. It is.

In the illustrated embodiment, the inward stopper 7 is formed by three inward protrusions, but the number may be less or more than three, and the shape of the inward stopper may be changed to the outer stroke. A ring-shaped stopper along the peripheral wall of - may also be used.

Further, in this invention, the dimensions and angles of each part of the inner and outer straws are as follows. In other words, the inner diameter A of the reduced diameter part on the proximal end of the outer straw, the inner diameter B of the side straw body 3, the inner diameter C1 at the 0 point of the innermost end of the inward opening stopper, the inner diameter of the starting point P at the reduced diameter part 4 position of the inward stopper. D, the mutual relationship among the inner diameter E of the tip of the tapered part 6, the outer diameter F of the tip of the inner straw enlarged diameter part 2, and the outer diameter G of the inner straw body 1, and the outer straw
3, the inclination angle θ1 of the reduced diameter part 4 and the enlarged diameter part 2 of the inner straw 1
The mutual relationship with the inclination angle θ2 is “B≧F〉DIE≧G
”, “F>C≧GJ, rF>AJ and “θ1>θ2”
Especially, the feature of the present invention is that F>D and D and θ1>θ2. In addition to this dimensional feature, the outer straw 3 is also made of a softer material than the inner straw 1.

The telescopic straw of the present invention, which has the +i configuration as described above, has a state in which the tip of the inner straw 1 is slightly pulled out from the tip of the outer straw 3! 3 (as shown in the first and second figures). Therefore, if you pinch the tip of the inner straw 1 and pull it out, the expanded proximal end portion 2 of the inner straw 1 will pass through the inward stopper 7 near the tip of the outer straw. It engages with the reduced diameter portion at the tip and becomes an extended state. Then, even if an attempt is made to retract and contract the inner straw 1, the enlarged diameter portion 2 of the inner straw 1 is stopped by the inward stopper of the outer straw 3,
Retraction of the inner straw is prevented. Therefore, the extended state of the straw is maintained, and there is no risk of it contracting unnecessarily.

In particular, in the present invention, since the 0 point position at the innermost end of the inward stopper 7 is formed by a curved surface, the inner stroke
When the enlarged diameter part 2 of 1 passes through, it can pass smoothly, and there is no risk of tearing or damaging this innermost end position.

In addition, the dimensional relationship between the outer diameter F of the tip of the inner straw's enlarged diameter part 2 and the inner diameter of the starting end P at the position of the diameter-reduced part 4 of the inward stopper is F>D, and the diameter of the diameter-reduced part 4 of the outer straw is The mutual relationship between the inclination angle θ1 and the inclination angle θ2 of the enlarged diameter portion 2 of the inner straw is θ1>θ2, and the outer straw is further
Since it is made of a more flexible material, when the inner and outer straws are pulled out and their enlarged diameter portions 2 engage with the reduced diameter portions 4 of the outer straws, and the inward stopper 7 prevents them from returning, the seventh In the passage D shown in the figure, the enlarged diameter part 2 of the inner straw expands the reduced diameter part 4 of the outer straw outward (from the dotted line position to the solid line position in the figure), especially at the most extreme edge of the enlarged diameter part 2. This ensures pressure contact with the inner circumferential edge at the P point position and reliably maintains an airtight state.

Furthermore, in the present invention, since the proximal slope 9 forming the inward stopper 7 is gently sloped and the distal slope 10 is steeply sloped, the inner straw is extended and the enlarged diameter portion 2 at the proximal end thereof is formed. When the straw gets over the inward stopper 7, it gets over smoothly due to the gentle slope, and once it gets over, it is locked by the steep slope 0 on the tip side, so that the inside straw can be reliably extended without fear of being easily pulled in. It can also be maintained.

(Effect of the invention) As described above, according to the telescopic straw of the present invention, the inner straw
At the engagement part between the inner straw and the outer straw, the enlarged diameter part of the inner straw expands the starting edge of the reduced diameter part of the outer straw outward, ensuring a close contact and ensuring an airtight state. was able to ensure that. By making the inner end of the inward stopper curved, tearing and damage in this part can be minimized and air leakage from this part can be effectively prevented. In particular, the present invention has the great effect that, due to its dimensional characteristics, it can sufficiently ensure airtightness even if there are some errors that occur during production, making it suitable for mass production.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention; FIG. 1 is a front view of the contracted state, FIG. 2 is an enlarged vertical cross-sectional view with a part omitted, FIG. 3 is an enlarged cross-sectional view of the inner straw, and FIG. The figure is an enlarged sectional view of the main part of the outer straw taken along the line IV-rV in FIG. 5, FIG. 5 is a sectional view taken along the line V-V in FIG. 4, and FIG. An enlarged sectional view of the main part of another embodiment,
FIG. 7 is an enlarged sectional view illustrating the state of engagement between the inner straw and the outer straw. ■・・・Inner straw 22・・・Expanded diameter part,
3...-outer draw, 4...
Reduced diameter portion, 7...Inward stopper, 8.
...Reduced diameter part, 9...Gentle slope on the proximal side, 10...Steep slope on the distal side, A...
...Inner diameter of the proximal side reduced diameter part of the outer straw, B...
...Inner diameter of the outer straw body, C...
Inner diameter of the innermost 0 point of the inward stopper, D...
・Inner diameter of starting point P at position 4 of reduced diameter part of inward stopper, E... Inner diameter of tip of tapered part 6, F
・・・・・・Outer diameter of the tip of the inner straw enlarged diameter part 2,
G...Outer diameter of inner straw body 1, θ1・
...Inclination angle θ2 of the reduced diameter part 4 of the outer straw...
... - Procedural amendment to the inclination angle of the enlarged diameter portion 2 of the inner suction drawer June 30, 1985 Michibe Uga, Commissioner of the Patent Office 1, Indication of the case Patent Application No. 19873 1987 2, Title of the invention Beverage Telescopic straw for use 3, relationship with the amended person case Patent applicant 2235-3 Denpo, Fuji City, Shizuoka Prefecture Sanyo Shiki Co., Ltd. Representative Yuki Inaba - 4, Agent ■ 101 Kanda Awaji-cho 2, Chiyoda-ku, Tokyo Chome 19-6,
Subject of amendment Contents of amendment (1) in the Detailed Description of the Invention column of the specification, the following sentence shall be added after "The enlarged diameter part 2" in the third line of page 10 of the specification. ``The enlarged diameter part 2 shown in the drawing is an embodiment in which the diameter is expanded only by a shape that widens toward the end, but the free end of the enlarged diameter part may be provided with an enlarged end part that slightly expands outward. , and may also have a shape in which the free end has approximately the same diameter and extends forward.'' (2), also on page 10, line 8, ``
be. ” and “this tapered portion”, “the shape of this tapered portion 6 may be cylindrical with the same diameter, may be slightly tapered to be slightly tapered, or may be a combination thereof. Good.” is added. that's all

Claims (2)

[Claims] (1) The base end of the inner straw 1 is enlarged in diameter to form an enlarged diameter part 2, the tip of the outer straw 3 is reduced in diameter to form a reduced diameter part 4, and the tip has a tapered part 6. straws 1, 3
An inward stopper is provided at a position near the tip of the outer straw to prevent the inner straw 1 from being drawn in so that the enlarged diameter portion 2 on the proximal end side of the inner straw engages with the reduced diameter portion 4 at the tip of the outer straw in the extended state. 7, the inward stopper 7 is formed across the reduced diameter portion 4 of the outer straw and the outer straw body 3, and the innermost point O of the inward stopper 7 is a portion of the inward stopper 7. are formed into a curved surface, and the inner diameter A of the reduced diameter part on the proximal end of the outer straw, the inner diameter B of the outer straw main body part 3, the inner diameter C of the innermost end point O of the inward stopper,
Mutual relationship among the inner diameter D of the starting end P point at the reduced diameter part 4 position of the inward stopper, the inner diameter E of the tip of the tapered part 6, the outer diameter F of the tip of the inner straw enlarged diameter part 2, and the outer diameter G of the inner straw body 1 , and the inclination angle θ_1 of the reduced diameter portion 4 of the outer straw 3
and the inclination angle θ_2 of the enlarged diameter portion 2 of the inner straw 1 are as follows: "B≧F>D>E≧G", "F>C≧G", "
F>A" and "θ_1>θ_2", and the outer straw is made of a softer material than the inner straw. (2) The base end of the inner straw 1 is enlarged in diameter to form an enlarged diameter part 2, the tip of the outer straw 3 is reduced in diameter to form a reduced diameter part 4, and the tip has a tapered part 6. straws 1, 3
An inward stopper is provided at a position near the tip of the outer straw to prevent the inner straw 1 from being drawn in so that the enlarged diameter portion 2 on the proximal end side of the inner straw engages with the reduced diameter portion 4 at the tip of the outer straw in the extended state. 7, the inward stopper 7 is formed across the reduced diameter portion 4 of the outer straw and the outer straw body 3, and the innermost point O of the inward stopper 7 is a portion of the inward stopper 7. is formed into a curved surface,
The inward stopper 7 has a steep slope 10 at the distal end and a gentle slope 9 at the proximal end, and the inward stopper 7 is formed into a vertically elongated shape. Inner diameter B of main body part 3, Inner diameter C at the innermost end O point of the inward stopper, Inner diameter D at the starting end P point at the reduced diameter part 4 position of the inward stopper, Inner diameter E at the tip of the tapered part 6, Inner straw enlarged diameter part 2 Relationship between the outer diameter F of the tip and the outer diameter G of the inner straw body 1, and the reduced diameter portion 4 of the outer straw 3
The inclination angle θ_1 of the inner straw 1 and the inclination angle θ of the enlarged diameter part 2 of the inner straw 1
The mutual relationship with _2 is "B≧F>D>E≧G", "F
>C≧G,” “F>A” and “θ_1>θ_2,” and the outer straw is made of a softer material than the inner straw.