JPH0156761B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pull-out straw suitable for sucking and drinking beverages filled in various containers.

[Conventional technology]

A screw-type suction system in which a slave straw is inserted into a main straw, male and female screws are formed on both sides, and the slave straw can be pulled out from the main straw by screw feeding by rotating the slave straw around its axis. The applicant has previously developed a drinking straw, which requires both the main and secondary straws to be threaded.

[Problem to be solved by the invention]

In the present invention, the slave straw can be drawn out from the main straw by a screw type, but the structure for this purpose is that the main straw is threaded, but the slave straw is not threaded. This makes it possible to provide a straw that can be produced at much lower manufacturing cost than a straw that requires threading.

[Means for solving problems]

Accordingly, the drinking straw of the present invention has a straight pipe portion having an inward stopper portion formed at the distal end, and a thread facing into the straight pipe portion, and a female screw thread leaving a receiving portion so that the end portion does not reach the stopper portion. A main straw is inserted into the main straw, and a sliding tube portion whose outer diameter is substantially the same as the inner diameter of the stopper portion of the main straw is inserted into the main straw. A bulging portion is formed whose outer shape is substantially the same as the inner surface shape of the receiving portion including the stopper portion, and the rear end of this bulging portion is formed at the same angle as the inclination angle of the female thread of the main straw. It is constructed with a slave straw formed on an inclined edge.

[Effect]

Before use, the secondary straw can be pushed into the main straw to keep the overall length short.

When sucking, when the secondary straw is rotated around the axis and pulled, the bulging portion of the secondary straw is guided and threaded by the female thread of the main straw, thereby allowing the secondary straw to be pulled out from the main straw. Moreover, when it is fully pulled out, the bulging part of the slave straw fits into the receiving part of the main straw, and the rear edge of the bulging part engages with the front inclined surface of the most forward thread of the female thread of the main straw. to prevent relapse,
In addition, the front end surface and outer circumferential surface of the bulging portion of the secondary straw come into contact with the stopper portion and the inner circumferential surface of the receiving portion of the main straw, so that airtightness is maintained and the drinking liquid is ensured without reducing the suction force. Can be inhaled.

〔Example〕

Next, one embodiment of the present invention will be described in detail with reference to a specific example shown in the accompanying drawings.

In FIG. 1, numeral 1 indicates the main straw, 10
indicates a slave straw, both of which are made of plastic and have a thin pipe shape.

The main straw 1 has a tapered stopper part 3 formed at the distal end of a straight pipe part 2, and a small-diameter mouth pipe part 4 formed at the distal end of the stopper part. Furthermore, a suitable number of female threads 6 are formed at the front end of the straight pipe section, leaving a screwless receiving section 5 (described later), and a stopper 11 bent inward to prevent slipping out is formed at the rear end. It has been done.

The slave straw 10 is appropriately longer than the main straw 1, is inserted into the main straw 1, and has a sliding tube portion whose outer diameter is substantially the same as the inner diameter of the mouth tube portion 4 of the main straw. A bulging portion 9 is formed at the rear of the portion 7. The front end surface 8 of the bulging portion 9 is formed into a tapered surface that has substantially the same shape as the stopper portion 3 of the main straw, and the rear end edge 9C has the same inclination angle as the female thread 6 of the main straw. Formed with an angled beveled edge.

Further, the screwless receiving portion 5 of the main straw 1 is formed so that its inner surface shape is substantially the same as the bulging portion 9 of the secondary straw.

That is, the longest part 9a and the shortest part 9b in the axial direction of the bulging part 9 in the secondary straw are equal in length La and Lb to the longest part 5a and the shortest part 5b of the receiving part 5 in the main straw, respectively.

[Effects of the present invention]

When the straw according to the present invention is set in a container, the length can be shortened and the straw can be attached to the container without getting in the way, and when drinking, the slave straw can be pulled around the axis. By rotating the secondary straw, the rear end inclined edge 9c of the bulging portion 9 is guided by the side surface of the thread of the main straw, and the secondary straw is threaded and pulled out from the main straw.

When the bulging portion 9 of the secondary straw passes the female threaded portion 6 of the main straw, it fits into the receiving portion 5 of the main straw, and the front end surface portion 8 comes into contact with the inner surface of the stopper portion 3 of the main straw. With,
The sloping rear edge 9c is engaged with the front slope of the foremost screw of the main straw.

Therefore, the front end surface part 8 and the outer peripheral surface of the bulging part 9 of the secondary straw come into contact with the inner peripheral surface of the stopper part 3 and the receiving part 5 of the main straw, and are in close contact with each other to maintain airtightness and reduce the suction force. The liquid can be reliably sucked without getting wet.

In addition, since the sloped edge 9c at the rear end of the slave straw engages with the front side of the thread of the main straw, when the slave straw is pulled out and inserted into the closing seal of the straw insertion opening of the container, it is inserted into the main straw. There is no possibility that it will be pushed back, and it can be stabbed into the closing seal reliably.

Furthermore, although the straw of the present invention allows the secondary straw to be pulled out from the main straw by screw feeding,
Threads only need to be formed on the main straw, which can streamline equipment and reduce manufacturing costs to a much greater extent than when threads must be formed on both the main and slave straws, making this a very important option for manufacturers. It will be a benefit.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the straw according to the present invention, Fig. 2 is a longitudinal side view, Fig. 3 is a longitudinal side view showing the subordinate straw in a pulled out state, and Fig. 4 is a partially enlarged longitudinal section. A side view, FIGS. 5 and 6 are partially cutaway perspective views showing the screwed state, FIG. 7 is a cross-sectional view of an embodiment in which the stopper portion of the main straw is formed on a non-tapered surface, and FIG. 8 is the same. The front view of the embodiment in which the stopper is formed of discontinuous claw-like protrusions is shown. The names of the parts indicated by the symbols in the figure are as follows. DESCRIPTION OF SYMBOLS 1... Main straw, 2... Straight pipe part, 3... Stopper part, 4... Mouth pipe part, 5... Receiving part, 5a...
...Longest part, 5b...Shortest part, 6...Female thread, 7...
...Sliding tube part, 8...Front end surface of 7, 9...Bulging part,
9a... Longest part, 9b... Shortest part, 9c... Rear end edge, 10... Follower straw, 11... Stopper.

Claims (1)

[Claims] 1. A main straw with an internal thread formed in a straight pipe part with an inward stopper part formed at the tip, and a thread facing into the straight pipe part, leaving a receiving part so that the end part does not reach the stopper part, and an outer diameter A sliding tube portion having substantially the same diameter as the inner diameter of the stopper portion of the main straw is inserted into the main straw, and the rear end of the sliding tube portion has an inner diameter of the receiving portion including the stopper portion of the main straw. A bulging portion having a side surface shape and an outer shape that is substantially the same is formed, and the rear end edge of the bulging portion is formed into an inclined edge having the same angle as the inclination angle of the female thread of the main straw. A straw characterized by the fact that it becomes more.