Telescopic paper straw

Abstract

The embodiment of the utility model provides a telescopic paper straw. The telescopic paper straw comprises an inner tube with a first inner cavity and an outer tube with a second inner cavity, at least one part of the inner pipe is inserted into the second inner cavity, and an annular space is formed between the inner pipe and the outer pipe; a locking assembly is arranged between the inner pipe and the outer pipe and comprises a protruding part protruding inwards from the inner surface of the outer pipe and a groove part recessed inwards from the outer surface of the inner pipe, and when at least one part of the protruding part is contained in the groove part, the inner pipe and the outer pipe are locked. The outer pipe further comprises a sealing element which protrudes inwards from the inner surface of the outer pipe and abuts against the outer surface of the inner pipe so as to seal the annular space, through the arrangement, the protruding part, the sealing element and the groove part can be achieved in an embossing mode, and therefore production and manufacturing are extremely convenient and efficient, and meanwhile the sealing element can be used for sealing the annular space. A locking assembly is formed by the protruding part and the groove part, so that position limitation when the inner pipe is drawn out can be guaranteed, and the air tightness and liquid leakage prevention of the circulation channel are guaranteed through the sealing element.

Description

Technical Field

[0001] The utility model relates to a telescopic paper straw. Background Art

[0002] With the development of the beverage industry, straws of different specifications and models are more and more widely used. Traditional plastic straws have caused serious pollution to marine organisms and the environment, exacerbating the problem of plastic waste. In this context, environmentally friendly paper straws are widely used as an alternative.

[0003] In order to enable the straw to be placed in the package and fully inserted into the container to suck the beverage, some straws formed by combining an inner tube and an outer tube have been developed. These straws have a locking part for connecting and locking the inner tube and the outer tube, so that after the inner tube is inserted into the outer tube, the beverage can be sucked in combination without leakage. Usually, this type of straw is called a telescopic straw.

[0004] Generally, as shown in EP0139074A for a telescopic straw, the end of the inner tube has an expansion part, while the end of the outer tube has a contraction part. The expansion part is stuck in the contraction part to form locking and ensure no leakage of the sucked beverage. However, for a paper straw, a taper needs to be formed separately at the end, making the manufacturing difficult.

[0005] In a further improvement, as shown in CN115515459A, at least two locking elements protruding outward are provided on the inner tube, and at least two locking elements protruding inward are provided on the outer tube. Through the cooperation between the locking elements of the inner tube and the outer tube, the inner tube and the outer tube are locked and no leakage occurs when sucking the beverage. However, in the actual production process of manufacturing paper straws, it is relatively easy to form an inward concave shape, but difficult to form an outward protruding shape, making this method difficult in actual manufacturing.

[0006] Therefore, it is necessary to develop and implement a solution to solve the above technical problems. Summary of the Utility Model

[0007] To this end, the utility model provides a telescopic paper straw to solve the above technical problems.

[0008] A telescopic paper straw includes an inner tube having a first inner cavity and an outer tube having a second inner cavity;

[0009] At least a part of the inner tube is inserted into the second inner cavity, and an annular gap is formed between the inner tube and the outer tube;

[0010] A locking component is included between the inner tube and the outer tube. The locking component includes a protruding part protruding inward from the inner surface of the outer tube and a groove part recessed inward from the outer surface of the inner tube. When at least a part of the protruding part is received in the groove part, the inner tube and the outer tube are locked.

[0011] The outer tube further includes a closing element protruding inward from the inner surface of the outer tube and abutting against the outer surface of the inner tube to close the annular gap.

[0012] Wherein, the protruding part, the groove part and the closing element are all in the form of annular embossing.

[0013] Wherein, if the spacing of the annular gap is D, then D = 0.2 - 1.5 mm.

[0014] Wherein, if the height of the protruding part is H1, the width of the protruding part is W1, and the opening size of the groove part is W3, then H1 > D, W1 = 1 - 4 mm, and W1 > W3.

[0015] Wherein, H1 - D = 0.1 - 0.5 mm.

[0016] Wherein, if the height of the closing element is H2, then H2 > D.

[0017] Wherein, H1 > H2, and H2 - D = 0.1 - 0.3 mm.

[0018] Wherein, there are two groove parts, and the two groove parts are respectively a first groove part and a second groove part. The first groove part and the second groove part are arranged at intervals, and the depths and widths of the first groove part and the second groove part are the same.

[0019] Wherein, if the spacing between the first groove part and the second groove part is L1, and the spacing between the protruding part and the closing element is L2, then L1 ≠ L2.

[0020] Wherein, there are at least two closing elements, and the spacing between adjacent closing elements is L3, then L3 ≥ 1 mm.

[0021] Beneficial effects: The embodiment of the present utility model provides a telescopic paper straw, which includes an inner tube having a first inner cavity and an outer tube having a second inner cavity; at least a part of the inner tube is inserted into the second inner cavity, and an annular gap is formed between the inner tube and the outer tube; a locking assembly is included between the inner tube and the outer tube, and the locking assembly includes a protruding portion protruding inward from the inner surface of the outer tube and a groove portion recessed inward from the outer surface of the inner tube. When at least a part of the protruding portion is received in the groove portion, the inner tube and the outer tube are locked; the outer tube further includes a sealing element protruding inward from the inner surface of the outer tube and abutting against the outer surface of the inner tube to seal the annular gap. Through the above settings, the protruding portion, the sealing element and the groove portion can all be realized in the form of embossing, so that the production and manufacturing are extremely convenient and efficient. At the same time, the locking assembly formed by the protruding portion and the groove portion can ensure the position limitation when the inner tube is pulled out, and the sealing element ensures the airtightness of the flow channel and no liquid leakage. Description of the drawings

[0022] Figure 1 Schematic structural diagram of the telescopic paper straw of the first embodiment;

[0023] Figure 2 For Figure 1 Schematic diagram when the telescopic paper straw sucks the beverage;

[0024] Figure 3 For Figure 1 Schematic diagram when the inner tube in [[ ]] is retracted into the outer tube;

[0025] Figure 4 For Figure 1 Schematic diagram of the outer tube in [[ ]];

[0026] Figure 5 For Figure 1 Schematic diagram of the inner tube in [[ ]];

[0027] Figure 6 Schematic structural diagram of the telescopic paper straw of the second embodiment;

[0028] Figure 7 For Figure 6 Schematic diagram when the telescopic paper straw sucks the beverage;

[0029] Illustration of the illustrated elements:

[0030] Inner tubes 10, 30; First inner cavity 100; Annular gap 101; First groove portions 11, 31; Locking assembly 110; Outer tubes 20, 40; Second inner cavity 200; Flow channel 201; First protruding portions 21, 41; Sealing elements 22, 42; Second groove portion 32. Detailed implementation manners

[0031] In the following description, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Please refer to the attached Figures 1-5 , the first embodiment of the present utility model provides a telescopic paper straw for sucking liquids, such as beverages, etc., through a telescopic straw. The telescopic straw includes an inner tube 10 and an outer tube 20. The inner tube 10 is inserted into the outer tube 20 and can move axially along the outer tube 20 to achieve the elongation and contraction of the inner tube 10, so as to adapt to different containers or different packaging forms.

[0033] It can be understood that a part of the inner tube 10 is inserted into the outer tube 20, and at least a part is exposed outside the outer tube 20, so that the user can easily adjust the length of the inner tube 10 by grasping the exposed part or pull the inner tube 10 out of the outer tube 20 to a predetermined position.

[0034] The inner tube 10 has a first inner cavity 100, and the outer tube 20 has a second inner cavity 200. It can be understood that the inner tube 10 is inserted into the second inner cavity 200, and the first inner cavity 100 and the second inner cavity 200 communicate to form a flow channel 201. When the user sucks the liquid, the liquid enters the user's mouth through the flow channel 201.

[0035] Furthermore, both the first inner cavity 100 and the second inner cavity 200 are cylindrical. The first inner cavity 100 includes a first axis, and the second inner cavity 200 includes a second axis. The first axis and the second axis are collinear.

[0036] It can be understood that the inner diameter of the second inner cavity 200 should be larger than the outer diameter of the inner tube 10, so that the inner tube 10 can be easily inserted into the second inner cavity 200. At the same time, an annular gap 101 is formed between the inner tube 10 and the outer tube 20.

[0037] Furthermore, if the distance of the annular gap 101 is D, then D = 0.2 - 1.5 mm. The distance of the annular gap 101 is the distance between the outer surface of the inner tube 10 and the inner surface of the outer tube 20. It can be understood that if the distance of the annular gap 101 is too large, the inner tube 10 and the outer tube 20 are too loose and liquid leakage is likely to occur. If the distance of the annular gap 101 is too small, it is difficult to pull the inner tube 10.

[0038] A locking assembly 110 is included between the inner tube 10 and the outer tube 20 for limiting the position of the inner tube 10. The locking assembly 110 includes a first protruding portion 21 protruding inward from the inner surface of the outer tube 20 and a first groove portion 11 recessed inward from the outer surface of the inner tube 10. When at least a part of the first protruding portion 21 is received in the first groove portion 11, the inner tube 10 and the outer tube 20 are locked.

[0039] In this embodiment, the first protruding portion 21 is in the form of an annular embossing. Specifically, the first protruding portion 21 is formed by bending the side wall of the outer tube 20 toward the inner surface, so that its inner surface protrudes inward. More specifically, this form can be achieved by passing the side wall through a pressure roller, and the pressure roller includes a protruding portion. The protruding portion applies pressure on the outer surface of the outer tube 20 so that the side wall bends inward at the position corresponding to the protruding portion to form the first protruding portion 21.

[0040] It can be understood that the outer surface of the outer tube 20 has a pressing groove matching the shape of the first protruding portion 21 at the position corresponding to the first protruding portion 21.

[0041] It can be understood that the outer tube 20 is formed by winding paper layers. The paper layers are of a plastic structure, so that after being processed by the pressure roller, the formed first protruding portion 21 can, on the one hand, maintain a fixed shape, and on the other hand, still have a certain elasticity, so that it can undergo elastic deformation after disengaging from the first groove portion 11 and move within the annular gap 101.

[0042] The first groove portion 11 is in the shape of an annular groove. Similarly, the first groove portion 11 is also realized in the form of embossing. That is, specifically, the first groove portion 11 is formed by bending the side wall of the inner tube 10 toward the inner surface, so that its outer surface is recessed inward. Similarly, this form can be achieved by passing the side wall of the inner tube 10 through a pressure roller with a protruding portion. The protruding portion applies pressure on the outer surface of the inner tube 10 so that the side wall of the inner tube 10 bends inward at the position corresponding to the protruding portion to form the first groove portion 11.

[0043] It can be understood that when at least a part of the first protruding portion 21 is received in the first groove portion 11, the first groove portion 11 will catch the first protruding portion 21, so that the locking assembly 110 limits the positions of the inner tube 10 and the outer tube 20, so that the inner tube 10 is maintained at a predetermined position of the outer tube 20, facilitating the suction of liquid through the flow channel 201.

[0044] It can be understood that since at least a part of the first protruding portion 21 is received in the first groove portion 11, the height of the first protruding portion 21 should be greater than the spacing of the annular gap 101.

[0045] Please refer to Figure 4 and Figure 5 as well. If the height of the first protrusion 21 is H1, the width of the first protrusion 21 is W1, and the opening size of the first groove 11 is W3, then H1 > D.

[0046] Furthermore, W1 = 1 - 4 mm.

[0047] Furthermore, H1 - D = 0.1 - 0.5 mm, that is, the height at which the first protrusion 21 is received in the first groove 11 is 0.1 - 0.5 mm. On the one hand, it can limit the inner tube 10 and the outer tube 20 by the first protrusion 21 and the first groove 11, and on the other hand, it can make the first protrusion 21 easily come out of the first groove 11 or make the first protrusion 21 move easily when it touches the outer surface of the inner tube 10.

[0048] Furthermore, W1 > W3, so that only the top part of the first protrusion 21 is received in the first groove 11, enabling the first groove 11 to stably limit the first protrusion 21.

[0049] The outer tube 20 further includes a sealing element 22 that protrudes inward from the inner surface of the outer tube 20 and touches the outer surface of the inner tube 10 to seal the annular gap 101. Through the sealing element 22, the liquid will not leak out through the annular gap 101, and a closed flow channel 201 can be formed between the inner tube 10 and the outer tube 20. When the user sucks the liquid, the annular gap 101 will not leak air, causing difficulty in inhalation.

[0050] It can be understood that the sealing element 22 is in the shape of a boss. Furthermore, in this embodiment, the sealing element 22 is a boss formed by embossing on the inner surface of the outer tube 20, that is, the shape of the sealing element 22 is basically the same as that of the first protrusion 21.

[0051] Furthermore, the height of the sealing element 22 is H2, and the width is W2, then H2 > D, so that the sealing element 22 can touch the outer surface of the inner tube 10 and seal the annular gap 101.

[0052] Furthermore, H1 > H2, so that when the inner tube 10 is pulled out, the first protrusion 21 is more stably clamped in the first groove 11, and when the sealing element 22 is clamped in the first groove 11, it is easy to come out. Thus, it is convenient for the user to distinguish the first protrusion 21 and the sealing element 22 by applying force, so as to facilitate the position of the inner tube 10 being limited by the first protrusion 21 and the annular gap 101 being sealed by the sealing element 22.

[0053] Furthermore, H2 - D = 0.1 - 0.3 mm.

[0054] Furthermore, H1-H2=0.1~0.2mm.

[0055] It can be seen that in the present embodiment, whether it is the first protrusion 21 of the outer tube, the closing element 22, or the first groove portion 11 of the inner tube, they can all be realized by embossing, that is, they are all structurally embossed in a concave inward direction, which makes the production and manufacturing extremely convenient and efficient. At the same time, the locking assembly formed by the first protrusion 21 and the first groove portion 11 can ensure the position limitation when the inner tube is pulled out, and the air tightness and liquid-proofness of the flow channel can be ensured by the closing element 22.

[0056] Please refer to Figures 6-7 In the second embodiment, the inner tube 30 includes at least two groove portions. For a more convenient description, the two groove portions are respectively referred to as a first groove portion 31 and a second groove portion 32. The first groove portion 31 and the second groove portion 32 are spaced apart. At the same time, the first groove portion 31 and the second groove portion 32 have the same depth and width, so that when the first protrusion 41 is located at the first groove portion 31 and the second groove portion 32, the inner tube 30 is limited to positions of different lengths.

[0057] Furthermore, it is understandable that if the closing element 42 corresponds to the first groove portion 31 or the second groove portion 32, the annular gap cannot be closed. Therefore, if the distance between the first groove portion 31 and the second groove portion 32 is L1, and the distance between the first protrusion 41 and the closing element 42 is L2, then L1≠L2.

[0058] Furthermore, L2-L1≥2 mm, so that when the first protrusion 41 corresponds to the first groove portion 31, the closing element 42 is staggered with the second groove portion 42 by a sufficient distance, thereby ensuring that the closing element 42 can stably close the annular gap.

[0059] Furthermore, there are at least two closing elements 42, and the distance between adjacent closing elements 42 is L3, then L3≥1mm, and the annular gap is closed by multiple adjacently arranged closing elements 42 to ensure that there is no air leakage.

[0060] Furthermore, when at least two closing elements 42 are provided, the closing elements 42 are provided on the same side of the first protrusion 41. For example, in the present embodiment, the two closing elements 42 are both provided on the right side of the first protrusion 41, so that when the inner tube 30 is pulled, the first protrusion 41 on the left side matches with the first groove portion 31 before pulling, thereby preventing the user from being unable to distinguish between the closing element 42 and the first protrusion 41.

[0061] In addition, when multiple closing elements 42 are provided, the abutment of the multiple closing elements 42 against the outer surface of the inner tube 30 can also keep the inner tube 30 stable in the outer tube 40, and it is not easy to shake or the like.

[0062] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A telescopic paper straw, characterized in that: comprising an inner tube having a first inner lumen and an outer tube having a second inner lumen; At least a portion of the inner tube is inserted into the second inner cavity, and an annular gap is formed between the inner tube and the outer tube; A locking assembly is included between the inner tube and the outer tube, and the locking assembly includes a protrusion protruding inward from the inner surface of the outer tube and a groove portion recessed inward from the outer surface of the inner tube. When at least a portion of the protrusion is accommodated in the groove portion, the inner tube and the outer tube are locked; The outer tube further comprises a closing element which protrudes inward from the inner surface of the outer tube and contacts the outer surface of the inner tube to close the annular gap.

2. The telescopic paper straw according to claim 1, characterized in that: The protruding portion, the groove portion and the closing element are all in the form of annular embossing.

3. The telescopic paper straw according to claim 1, characterized in that: If the spacing of the annular gap is D, then D = 0.2 ~ 1.5mm.

4. The telescopic paper straw according to claim 3, characterized in that: If the height of the protruding portion is H1, the width of the protruding portion is W1, and the opening size of the groove portion is W3, then H1>D, W1=1-4 mm, and W1>W3.

5. The telescopic paper straw according to claim 4, characterized in that: H1-D=0.1~0.5mm.

6. The telescopic paper straw according to claim 4, characterized in that: If the height of the closing element is H2, then H2>D.

7. The telescopic paper straw according to claim 6, characterized in that: H1>H2, H2-D=0.1~0.3mm.

8. The telescopic paper straw according to claim 4, characterized in that: There are two grooves, which are a first groove and a second groove. The first groove is spaced apart from the second groove, and the first groove has the same depth and width as the second groove.

9. The telescopic paper straw according to claim 8, characterized in that: If the distance between the first groove portion and the second groove portion is L1, and the distance between the protruding portion and the closing element is L2, then L1≠L2.

10. The telescopic paper straw according to claim 8, characterized in that: There are at least two closing elements, and the distance between adjacent closing elements is L3, where L3≥1mm.

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