JPH0511877U - Drinking straws - Google Patents

Abstract

(57) [Summary] [Purpose] When using a straw for beverages with the inner tube inserted into the outer tube so that it can be pulled out, the overlap length of the inner and outer tubes is shortened as much as possible to reduce the actual utilization rate of the straw. Increase. [Structure] In constructing a drinking straw in which a plastic inner tube is also inserted into a plastic outer tube so that it can be pulled out, an inner collar 2 is provided at the front end of the outer tube 1, and a rear of the inner tube 3 is provided. The outer collar 4 is formed at the end and the outer pipe 1
By setting the inner diameter d1 of the inner tube 3 and the outer flange outer diameter d2 of the inner tube 3 to be substantially equal, and the outer diameter d3 of the inner tube 3 and the inner flange inner diameter d4 of the outer tube 1 to be substantially equal, At the rear opening edge
The pull-out amount of the inner pipe 3 drawn out from 1a through the inner flange 2 is limited by the engagement of the outer flange 4 of the inner pipe 3 with the inner flange 2, and the flange receiving projection 5 protruding from the outer surface of the inner pipe 3 The engagement between the outer pipe 1 and the outer collar 2 prevented the inner pipe 3 from moving backward relative to the outer pipe 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plastic beverage straw in which an inner tube is inserted into an outer tube and used for withdrawal.

[0002]

[Prior Art]

 As a straw of this type, for example, the one described in Japanese Patent Publication No. 60-10721 has been known. This conventional technique is a beverage straw in which an inner tube is slidably mounted in an outer tube, and the outer tube has a funnel shape in which a front end portion thereof is composed of a tube portion and a mortar-shaped body, and A divergent opening at the rear end of the funnel-shaped body is integrally provided so as to communicate with the front end opening of the outer tube body having a locking portion at the front end, and the inner tube has a rear end opening. It is formed in a hopper shape that widens toward the inner peripheral surface of the mortar-shaped body, and the rear end opening peripheral edge of the rear end is formed so as to slidably contact the inner peripheral surface of the outer tube body. The outer peripheral surface of the inner tube body is formed so as to slidably contact the inner peripheral surface of the tube body, and when the inner tube is pulled out from the outer tube and formed into a use state, The tube is locked to the outer tube without being retrograde, and the inner tube is not airtight and laterally displaced. A drinking straw, characterized in that it is held in the outer tube.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional technique is to prevent water leakage and air leakage when the inner pipe is drawn out and used, and to prevent lateral blurring of the inner pipe, by the pipe body portion provided at the front end of the hopper-shaped portion of the outer pipe. However, this pipe part is a long piece that is useless when it is not used before pulling out the inner pipe from the outer pipe, which is a waste of resources and is uneconomical. Due to the above-mentioned tubular body, a large proportion has a short total length, resulting in a low effective utilization rate as a straw.

In order to eliminate the above-mentioned problems, the present invention has an outer locking collar part for keeping the liquid tightness and airtightness between the outer pipe and the inner pipe and preventing the lateral movement of the inner pipe and the removal thereof. The purpose is to reduce the overlap length of the inner and outer pipes and increase the effective utilization rate as a straw by forming them at the ends of the pipe and the inner pipe.

[0005]

[Means for Solving the Problems]

 The above-mentioned object of the present invention is to provide a drinking straw in which a plastic inner pipe is also inserted in a plastic outer pipe so that the plastic pipe can be pulled out, and an inner collar is provided at the front end portion of the outer pipe, and a rear end portion of the inner pipe is provided. By forming an outer collar on the outer pipe, and setting the inner diameter of the outer pipe and the outer diameter of the outer collar of the inner pipe to be substantially equal to each other, and the outer diameter of the inner pipe and the inner diameter of the inner collar of the outer pipe to be substantially equal to each other, The amount of pulling out of the inner pipe, which is led out from the rear opening edge through the inner flange into the outer pipe, is limited by the engagement of the outer flange of the inner pipe with the inner flange, and the front beveled surface is projected on the outer surface of the inner pipe. This can be achieved by engaging the flange receiving protrusion with the outer flange of the outer tube to prevent the inner tube from moving backward with respect to the outer tube.

[0006]

[Action]

 Since the inner diameter of the outer pipe and the outer diameter of the outer flange of the inner pipe are set to be approximately the same, and the outer diameter of the inner pipe is set to be substantially the same as the inner diameter of the inner flange of the outer pipe, the inner pipe inside the outer pipe is Since the flange is in sliding contact with the inner peripheral surface of the outer tube, and the inner flange of the outer tube is in sliding contact with the outer peripheral surface of the inner tube, when the inner tube is pulled out from the outer tube, the inner tube is pulled out smoothly without jerking. be able to.

In the vicinity of the end point of this drawer, the inner flange of the outer pipe rides over the flange receiving protrusion of the inner pipe via its slope, and contacts the outer flange of the inner pipe to lock the inner pipe to the outer pipe. The inner tube cannot be pulled out from the outer tube because the pull-out size of the inner tube can be limited, and the inner tube does not fall into the outer tube during use due to its flange receiving protrusion.

[0008]

【Example】

 Examples will be described with reference to the drawings. First of all, as shown in FIG. 4, the basic structure of the present invention is such that a plastic inner pipe 3 as shown in FIG. 3 can be drawn out in a plastic outer pipe 1 such as polyethylene or polypropylene as shown in FIG. When constructing the inserted drinking straw, the inner collar 2 is provided at the front end of the outer tube 1 as shown in FIG. 1, and the outer collar is provided at the rear end of the inner tube 3 as shown in FIGS. 1 and 3. Forming 4

Further, as shown in FIG. 6, the inner diameter d1 of the outer pipe 1 and the outer flange outer diameter d2 of the inner pipe 3 are set to be substantially equal to each other, and the outer diameter d3 of the inner pipe 3 and the inner flange inner diameter of the outer pipe 1 are set. Set d4 almost equal.

Then, as shown in FIGS. 1 and 5, the front portion of the inner pipe 3 inserted into the outer pipe 1 from the rear opening edge 1a is led out through the inner collar 2 and the inner pipe 3 After the state shown in FIG. 7, the withdrawal amount is limited by the engagement of the outer flange 4 of the inner pipe 3 with the inner flange 2 as shown in FIG.

Further, a saw-toothed collar receiving projection 5 having a front slope shown in FIG. 6 and FIG. 8 projecting from the outer surface of the inner tube 3 and the outer collar 2 of the outer tube 1 are shown in FIG. By preventing the inner tube 3 from moving backward with respect to the outer tube 1, it can be used as a long drinking straw.

As shown in FIG. 1, the inner tube 3 in the outer tube 1 has its outer flange 4 slidingly contacting the inner peripheral surface of the outer tube 1, and the inner tube 2 of the outer tube 1 has an outer periphery of the inner tube 3. Since it is in sliding contact with the surface as shown in Fig. 1, when the inner pipe 3 is pulled out from the outer pipe 1, the inner pipe 3 can be pulled out smoothly without jerking.

Near the end point of this drawer, the inner collar 2 of the outer tube 1 passes over the collar receiving projection 5 of the inner tube 3 via its front slope as shown in FIG. 7 and as shown in FIG. The inner flange 3 of the outer tube 1 abuts the outer flange 4 of the inner tube 3 so that the inner tube 3 can be locked to the outer tube 1, and the withdrawal dimension of the inner tube 3 can be limited. Because of the receiving projection 5, there is no delusional retrogression into the outer tube 1 during use.

The cross-sectional shape of the collar receiving projection 5 is, for example, a saw-tooth shape having a front slope as described above, and has, for example, a semi-circular cross section, a semi-cylindrical shape, a triangular mountain shape, or a rectangular projection with a short height. Alternatively, one of these cross-sectional shapes may be provided in a ring shape on the outer peripheral surface of the inner tube 3.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. The inner flange 3 of the outer tube 1 has its outer flange 4 slidingly contacting the inner peripheral surface of the outer tube 1, and the inner flange 2 of the outer tube 1 slidingly contacting the outer peripheral surface of the inner tube 3 as shown in FIG. Therefore, when the inner pipe 3 is pulled out from the outer pipe 1, the inner pipe 3 can be pulled out smoothly without jerking even if the overlap length with the outer pipe 1 is short, and when used, the inner pipe 3 and the outer pipe 1 can be pulled out. Since the overall length can be lengthened despite the short overlap length with, the first effect is that it has a high effective utilization rate as a straw and is resource-saving.

Further, near the end point of the withdrawal of the inner pipe 3, the inner flange 2 of the outer pipe 1 rides over the flange receiving projection 5 of the inner pipe 3 via its inclined surface and engages with the outer flange 4 of the inner pipe 3, Since the inner pipe 3 can be locked to the outer pipe 1 and the withdrawal dimension of the inner pipe 3 can be limited, the inner pipe 3 does not pull out from the outer pipe 1, and the inner pipe is inside the outer pipe 1. Since 3 does not go back indefinitely, it does not become short, and there is a second effect that it can be used withdrawal easily and reliably.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part of an outer tube and an inner tube of a straw according to the present invention.

FIG. 2 is a side view of an outer tube forming the straw of the present invention.

FIG. 3 is a side view of the inner pipe.

FIG. 4 is a side view of a state in which the inner tube is also inserted through the outer tube.

FIG. 5 is a side view of the straw according to the present invention in an unused state in which the inner tube is housed in the outer tube.

FIG. 6 is an enlarged cross-sectional view showing a dimension example of main parts of an outer pipe and an inner pipe.

FIG. 7 is an enlarged cross-sectional view showing a state in which the inner flange of the outer tube rides over the flange receiving protrusion of the inner tube of the straw according to the present invention.

FIG. 8 is an enlarged cross-sectional view showing a state in which the inner flange of the outer pipe and the outer flange of the inner pipe are engaged with each other.

[Explanation of symbols]

 1 Outer tube 2 Inner collar 1a Rear opening edge 3 Inner tube 4 Outer collar 5 Collar receiving protrusion d1 Outer tube inner diameter d2 Outer collar outer diameter d3 Inner tube outer diameter d4 Inner collar inner diameter

Claims (1)

[Scope of utility model registration request] 1. A beverage straw in which a plastic inner tube is also inserted in a plastic outer tube so as to be able to be drawn out, an inner tube 2 is provided at a front end portion of the outer tube 1, and an inner tube 3 is provided.
An outer collar 4 is formed at the rear end of the rear tube, and the inner diameter d1 of the outer tube 1 and the outer collar outer diameter d2 of the inner tube 3 are set substantially equal to each other.
Further, by setting the outer diameter d3 of the inner pipe 3 and the inner collar inner diameter d4 of the outer pipe 1 to be substantially equal to each other, the rear opening edge 1a is formed in the outer pipe 1.
The inner pipe 3 drawn out from the above through the inner flange 2 is limited by the engagement of the outer flange 4 of the inner tube 3 with the inner flange 2,
A drinking straw in which the inner pipe (3) is prevented from moving backward with respect to the outer pipe (1) by the engagement between the flange receiving protrusions (5) protruding on the outer surface of the outer pipe (1) and the outer flange (2) of the outer pipe (1).