Double-tube type safety suction tube

Abstract

The utility model provides a double-tube type safety straw which comprises an outer tube and an inner tube, a piercing portion is arranged at the lower end of the outer tube, and a tube body of the outer tube and the piercing portion are both arranged on the inner tube in a sleeved mode. A pair of protruding points is arranged on the side wall of the piercing part, and grooves matched with the protruding points are formed in the inner wall of the inner pipe. The straw adopts a double-tube form, the piercing part of the outer tube is directly arranged on the inner tube in a sleeving manner, and the piercing part is partially attached to the surface of the inner tube, so that the danger of the piercing part is eliminated, the straw is safer, the piercing process can be completed in one step, and the straw is convenient and rapid to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a straw technical field especially relates to a double -tube type safety straw. BACKGROUND

[0002] The straw is a cylindrical, hollow plastic product, its main function is to drink the beverage in the cup, also used to suck some cooked animal long bone marrow. Generally diameter is about 0.5cm, but when sucking yogurt, pearl milk tea and other drinks, thicker straw is used, some diameter is 1.2cm. Some less common, very small diameter straw is used for drinking hot drinks.

[0003] The current straw is divided into the straw with the tip and the straw without the tip, the straw without the tip is mostly not used as the tool of pricking, is directly put into the drink and is used, and the straw with the tip is used as the tool of pricking and sucking, is widely used.

[0004] In recent years, the event of pricking the person with the straw tip occurs from time to time, especially when the child uses the straw, the straw is not inserted into the bottle in time, and it is very easy to prick the injury in the process of playing with the straw, and the serious pricking can blind the eye, causes the irreversible damage, so an urgent need exists for a double -tube type safety straw to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problem, the utility model provides a double -tube type safety straw, the straw adopts the form of double tube, the piercing part of outer tube is directly sleeved on the inner tube, and the piercing part is partially attached to the surface of the inner tube, so that the danger of the piercing part is eliminated, it is safer, and the piercing process can be completed in one step, and it is convenient and fast to use.

[0006] To solve the above problem, the technical scheme adopted by the utility model is:

[0007] A double -tube type safety straw, including outer tube and inner tube, the lower end of outer tube is equipped with piercing part, the outer tube is sleeved on the inner tube, and the lower end of inner tube extends from the piercing part, the side wall of piercing part is equipped with a pair of convex points, and the inner wall of inner tube is equipped with the recess groove matched with the convex point.

[0008] Preferably, the outer tube and the inner tube are in interference fit.

[0009] Preferably, the piercing part is a bevel, and the end of the piercing part is a tip.

[0010] Preferably, the upper end of the inner tube is flush with the upper end of the outer tube, and the lower end of the inner tube extends from the piercing part of the outer tube.

[0011] Preferably, the length of the outer tube is much smaller than the length of the inner tube, and the outer tube is sleeved on the lower end of the inner tube.

[0012] The utility model discloses the beneficial effect is:

[0013] 1. by with the outer tube of the puncture part of the inner tube, puncture part partial adhesion to the inner tube surface, eliminate the danger of puncture part, more safe.

[0014] 2. the upper end of inner tube is flush with the upper end of outer tube, and the lower end of inner tube is longer than outer tube, when using, only need to aim at the lower end of inner tube and puncture position, hold the outer tube and directly puncture, and the inner tube will first reach the puncture position, because the lower end of inner tube is not provided with a pointed end, and then will not directly puncture, and the outer tube will further move down, and after the puncture part punctures, the inner tube enters the bottle, and the puncture process can be completed in one step, and the use is convenient and fast.

[0015] 3. the form of interference fit is adopted between outer tube and inner tube, and concave point and recess are arranged, and a certain friction resistance exists between the two, and a certain force needs to be applied to move each other, so that the straw not only has the protection effect before use, but also is not easy to separate after puncturing. DRAWINGS

[0016] Figure 1 It is the structure schematic view of the utility model;

[0017] Figure 2 It is the sectional view of the utility model;

[0018] Figure 3 It is the puncture state schematic view of the utility model;

[0019] Figure 4 It is the embodiment 2 schematic view of the utility model.

[0020] In the drawing: 1 outer tube, 11, puncture part, 12 convex point, 2 inner tube. DETAILED DESCRIPTION

[0021] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the following disclosed specific implementation.

[0022] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not meant to be limiting.

[0023] Embodiment 1

[0024] With reference to Figures 1-3 A double tube safety straw comprises an outer tube 1 and an inner tube 2, the lower end of the outer tube 1 is provided with a piercing part 11, the outer tube 1 is sleeved on the inner tube 2, and the lower end of the inner tube 2 extends out of the piercing part 11.

[0025] Further, the outer tube 1 and the inner tube 2 are in interference fit, the side wall of the piercing part 11 is provided with a pair of protrusions 12, the inner wall of the inner tube 2 is provided with grooves matched with the protrusions 12, the protrusions 12 are integrally formed with the piercing part 11, and the grooves are integrally formed with the inner tube 2, and the two have a certain frictional resistance, and a certain force needs to be applied to move them relative to each other. The straw not only has a protective effect before use, but also is not easy to separate after being pierced.

[0026] Further, the piercing part 11 is a bevel cut, and the end of the piercing part 11 is a sharp end.

[0027] Further, the diameter of the inner tube 2 is 6.7 mm, the diameter of the outer tube 1 is 7.4 mm, and the inner diameter of the outer tube 1 is 6.7 mm, at this time the interference amount is zero, which ensures the convenience of use, and can also be greater than zero, further improving the frictional resistance.

[0028] Further, the upper end of the inner tube 2 is flush with the upper end of the outer tube 1, and the lower end of the inner tube 2 extends out of the piercing part 11 of the outer tube 1, and the extended part is a reserved part, which is a safety distance of the excess part.

[0029] Further, the length of the inner tube 2 is 230 mm, and the length of the outer tube 1 is 210 mm, which meets the use requirements of most occasions.

[0030] Before the straw is taken out, the piercing part 11 of the outer tube 1 is sleeved on the inner tube 2, and the piercing part 11 is partially attached to the surface of the inner tube 2, which is equivalent to a straw without a sharp end, eliminating the danger of the piercing part 11. When in use, only the lower end of the inner tube 2 is aligned with the piercing position, and the outer tube 1 is directly poked, the extended part of the lower end of the inner tube 2 will first abut against the piercing position. Since the lower end of the inner tube 2 is not provided with a sharp end, it will not be directly poked, and the outer tube 1 will be further moved downward until the piercing part 11 is poked, and then the inner tube 2 can enter the bottle, which can complete the piercing process in one step, and is convenient and fast, such as Figure 3When the bottle is empty, the user can press the inner tube 2 to make the inner tube 2 contact the bottle bottom, and then suck the residual drink.

[0031] Embodiment 2

[0032] Reference Figure 4 The embodiment is different from the embodiment 1 in that the length of the outer tube 1 is far less than the length of the inner tube 2, the outer tube 1 is sleeved at the lower end of the inner tube 2, and the length of the outer tube 1 can be 30 mm. The length of the outer tube 1 far less than the length of the inner tube 2 can reduce the cost. When used, the outer tube 1 is only needed to be pinched and moved downward, the puncture part 11 is moved out of the inner tube and punctured, and then the inner tube 2 is deeply inserted into the bottle.

[0033] The above only describes the preferred embodiments of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A double tube safety straw comprising an outer tube (1) and an inner tube (2), characterized in that, The lower end of the outer tube (1) is provided with a piercing part (11), the outer tube (1) is sleeved on the inner tube (2), and the lower end of the inner tube (2) extends out of the piercing part (11). The side wall of the piercing part (11) is provided with a pair of convex points (12), and the inner wall of the inner tube (2) is provided with grooves matched with the convex points (12).

2. A double tube safety straw according to claim 1, wherein The outer tube (1) and the inner tube (2) are in interference fit.

3. A double tube safety straw according to claim 1, wherein The piercing part (11) is a bevel, and the end of the piercing part (11) is a pointed end.

4. A double tube safety straw according to claim 1, wherein The upper end of the inner tube (2) is flush with the upper end of the outer tube (1), and the lower end of the inner tube (2) extends out of the piercing part (11) of the outer tube (1).

5. A double tube safety straw according to claim 1, wherein The length of the outer tube (1) is much smaller than the length of the inner tube (2), and the outer tube (1) is sleeved on the lower end of the inner tube (2).

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