Lateral-leakage-preventing palatable detachable and washable straw
By designing an interference fit between a flat straw body and an elastic sealing strip, the problems of insufficient sealing and adaptability of existing straws are solved, achieving easy disassembly and cleaning.
Patent Information
- Application Number
- CN202520785173.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Existing detachable straws are prone to wear and tear on their clips and slots after frequent use, leading to increased gaps that affect sealing and sucking performance. Furthermore, their circular cross-sections do not fit the mouth well enough, making them difficult to disassemble.
It adopts a flat straw body, which consists of detachable left and right tubes. The left tube is covered with a rubber elastic sealing strip that is interference-fitted with the right tube. Combined with the weak joint design, it ensures sealing and easy disassembly. The left and right tubes are equipped with levers for easy operation.
It improves the seal during sucking and the fit to the mouth, prevents leakage, simplifies the cleaning process, and extends the service life.
Smart Images

Figure CN223913883U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drinking utensils technology, and more specifically to a leak-proof and palatable detachable and washable straw. Background Technology
[0002] A straw is a drinking tool that uses atmospheric pressure difference to drive fluid movement, allowing users to drink directly from the cup without having to lift the cup. This not only improves the convenience of drinking but also effectively prevents spills, keeping clothes and surfaces dry and providing a better user experience.
[0003] Most common straws are one-piece, non-removable structures. Due to their long and thin diameter, it is often difficult to clean the beverage residue or solids such as fruit pieces, pearls, and tea leaves inside, resulting in cleaning dead spots. To solve the problem of cleaning dead spots in traditional straws, new detachable straws have appeared on the market. For example, Chinese Patent No. CN209574258U discloses a reusable straw that can be washed and cleaned. It includes a straw body made of plastic. The straw body is divided into two parts along its length. The two parts are fixedly connected on one side. One side of one part has a retaining strip extending along its length, and the other side of the other part has a groove that matches the retaining strip. The other sides of the two parts can be detachably engaged by the retaining strip and the groove.
[0004] The straw described above has a detachable main body, which allows for thorough cleaning and disinfection from the outside in after use, and the straw can be reassembled for reuse. This is both safe and hygienic, and more environmentally friendly. However, the main body of the straw is made of plastic. When the two free ends are engaged by the locking strip and slot, there is often a slight gap between the mating parts. Especially after frequent engagement and disengagement, the locking strip and slot are prone to wear and even deformation. This not only affects the engagement effect but also further widens the gap between the mating parts, making it difficult for the user to create a pressure difference between the inside and outside of the straw when sucking, and causing leakage. In addition, like conventional straws, the cross-sectional shape of this straw is circular, while the human lips are horizontally flat when closed. Therefore, there is a problem with the fit of the user's mouth when sucking, affecting normal use. Furthermore, the locking strip and slot are not easy to disassemble when engaged, which can affect the user experience. Utility Model Content
[0005] In response to the above issues, and to overcome the gaps that exist when the two free ends of the improved detachable plastic straw engage, making it difficult to create a pressure difference between the inside and outside of the straw during sucking and causing leakage, thus affecting normal use, and the circular cross-sectional shape of the straw leading to insufficient fit with the mouth, as well as the difficulty in disassembling it when engaged, the purpose of this utility model is to provide a straw that can be easily and effortlessly disassembled at both ends, facilitating internal cleaning, and with a tight fit between the left and right ends to avoid gaps, providing good sealing, and better fit with the mouth, ensuring normal drinking.
[0006] To achieve the above objectives, the technical solution of this utility model is:
[0007] A leak-proof and palatable detachable and washable straw includes a flat straw body with a flat opening. The flat straw body includes a left tube and a right tube connected to each other. The connection between the left and right tubes has a weak joint. An elastic sealing strip is integrally coated on the left side wall of the left tube. The left side wall of the left tube and the right side wall of the right tube interlock with each other and are sealed by an interference fit between the elastic sealing strip and the right inner side wall of the right tube. A left buckle is formed on the left tube and a right buckle is formed on the right tube.
[0008] Preferably, the left side wall of the left tube is a stepped wall, and the elastic sealing strip is integrally coated on the stepped wall, with the stepped wall and the right side wall of the right tube interlocking.
[0009] Preferably, the stepped wall includes an arc-shaped wall, a straight wall, and a rounded corner wall, with the arc-shaped wall and the straight wall connected by the rounded corner wall, and the right outer side wall of the right tube abutting against the straight wall.
[0010] Preferably, the elastic sealing strip is integrally coated onto the curved wall.
[0011] Preferably, an installation groove is provided on the curved wall, and an elastic sealing strip is placed in the installation groove and integrally coated with adhesive with the curved wall.
[0012] Preferably, the elastic sealing strip has a sealing protrusion that is interference-fitted with the right inner wall of the right tube body.
[0013] Preferably, the elastic sealing strip is made of silicone.
[0014] Preferably, the corners of the outer walls of the left and right tubes are rounded.
[0015] Preferably, the right latch and the left latch are arranged in a staggered manner.
[0016] Preferably, the left and right latches are located in the lower half of the left and right tubes, respectively.
[0017] Preferably, the flat straw is made of PP.
[0018] Compared with the prior art, the advantages of this utility model are:
[0019] (1) The straw opening of the flat straw is flat. When the straw opening is in the mouth and the lips are in a naturally closed state, it will be closer to the physiological structure of the lips, increase the contact area between the upper and lower lips, improve the sealing when sucking, and reduce the muscle tension when the lips are closed. Therefore, compared with the traditional round straw, it is more compatible with the mouth.
[0020] (2) The flat straw is composed of a left tube and a right tube connected to each other. There is a weak joint at the connection between the left tube and the right tube. The left side wall of the left tube is integrally coated with an elastic sealing strip. The left side wall of the left tube and the right side wall of the right tube are interlocked. At this time, the elastic sealing strip will be squeezed by the right side wall of the right tube and produce elastic deformation. In this way, the elastic sealing strip can be tightly fitted with the right tube, so that the left side wall of the left tube and the right side wall of the right tube form an interference fit through the elastic sealing strip, blocking the gap at the interlocking position and preventing the inner cavity of the flat straw from being connected to the external space through this gap. When the user sucks, the pressure difference inside and outside the straw is guaranteed to ensure normal drinking, and at the same time, air can be prevented from being mixed in when sucking the drink.
[0021] (3) The weak joint between the left and right tubes allows the left and right tubes to be opened by rotation. When opened, the inner cavities of the left and right tubes are fully exposed to the user's field of vision. At this time, the user can clean the inside of the flat straw, thus solving the problem of cleaning dead corners.
[0022] (4) A left buckle is formed on the left tube body and a right buckle is formed on the right tube body. The left buckle and the right buckle help the user to disassemble the left side of the left tube body and the right side of the right tube body in the snap-fit state with less effort, thereby improving the user experience. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the flat straw body of this utility model when the left and right tube bodies are interlocked.
[0024] Figure 2 This is a utility model Figure 1 A magnified structural diagram of part A;
[0025] Figure 3 This is a utility model Figure 2 A magnified structural diagram of the AA section;
[0026] Figure 4 This is a schematic diagram of the overall structure of the flat straw body, left and right tubes of the present invention, when unfolded.
[0027] Figure 5 This is a utility model Figure 4 A schematic diagram of the enlarged structure of part B;
[0028] Figure 6 This is a cross-sectional structural diagram of the flat straw body of the present invention;
[0029] Figure 7 This is a utility model Figure 6 A magnified structural diagram of part C.
[0030] As shown in the figure:
[0031] 1. Flat straw body; 101. Left tube body; 101a. Left buckle; 101b. Arc-shaped wall; 101c. Straight wall; 101d. Rounded corner wall; 101e. Mounting groove; 102. Right tube body; 102a. Right buckle; 1a. Weak joint band; 1b. Straw opening; 1c. Stepped wall; 1d. Right inner wall; 1e. Right outer wall; 2. Elastic sealing strip; 201. Sealing protrusion. Detailed Implementation
[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the purpose of simplifying the description and do not indicate or imply that the orientation is a specific orientation or specific orientation structure and operation. Therefore, they should not be construed as limiting this utility model.
[0034] like Figure 1 , Figure 2 as well as Figures 3 to 5As shown, this utility model relates to a leak-proof and palatable detachable and washable straw, which includes a flat straw body 1. The straw opening 1b of the flat straw body 1 is flat. When the straw opening 1b is placed in the mouth and the lips are naturally closed, it is closer to the physiological structure of the lips, increasing the contact area between the upper and lower lips, improving the seal during sucking, and reducing muscle tension when the lips are closed. Therefore, compared with traditional straws with a round shape, it has a better fit to the mouth. The flat straw body 1 is composed of a left tube body 101 and a right tube body 102 connected to each other. Both the left tube body 101 and the right tube body 102 have an inner cavity, and the two inner cavities together form the flat straw. The straw cavity of body 1 has a weak section 1a at the connection between the left tube 101 and the right tube 102. More specifically, at the connection between the left tube 101 and the right tube 102, the wall thickness corresponding to the folding center line is reduced to form the weak section 1a. The weak section 1a not only allows the left tube 101 and the right tube 102 to fold and rotate relative to each other, but also makes folding easier and significantly reduces unexpected rotation caused by the automatic rebound of the material after folding. The left side wall of the left tube 101 is integrally coated with an elastic sealing strip 2, and the left side wall of the left tube 101 and the right side wall of the right tube 102 interlock. See also Figure 3 and Figure 4It is understood that the left side wall of the left tube 101 includes a left outer side wall and a left inner side wall, and correspondingly, the right side wall of the right tube 102 also includes a right outer side wall 1e and a right inner side wall 1d. The left inner side wall of the left tube 101 has no assembly contact. The left tube 101 is interlocked with the right side wall of the right tube 102 through its left outer side wall. The overmolding process can reduce assembly steps, simplify the manufacturing process, and reduce production costs. Moreover, the interlocking connection, as a detachable connection method, allows the left tube 101 and the right tube 102 to switch between fixed and detached states. When the left tube 101 and the right tube 102 are interlocked, the left tube... The left and right ends of the left tube 101 and the right tube 102 are connected, thus forming a drinking vessel for the user. The user can drink the beverage from the cup through the end of the flat straw 1. When the left and right tubes 101 and 102 are engaged, the elastic sealing strip 2 is compressed by the right side of the right tube 102 and undergoes elastic deformation. This allows the elastic sealing strip 2 to tightly abut against the right inner wall 1d of the right tube 102. Consequently, the left side wall of the left tube 101 forms an interference fit with the right inner wall 1d of the right tube 102 through the elastic sealing strip 2. This effectively blocks the gap at the engagement position and avoids... The inner cavity of the non-flat straw 1 is connected to the external space through this gap. It should be mentioned that in this invention, the elastic sealing strip 2 is arranged along the length of the left tube 101 on the left side wall of the left tube 101. This allows the mating position of the left side wall of the left tube 101 and the right side wall of the right tube 102 to form a full-range seal. When the user sucks, this ensures the pressure difference inside and outside the straw, ensuring normal drinking, and also preventing air from being mixed in when drinking. Furthermore, the elastic sealing strip 2 has good wear resistance. When the left side wall of the left tube 101 and the right side wall of the right tube 102 frequently switch between fastening and unfastening states... It can still maintain a tight seal, thereby extending the service life of the entire straw; a left buckle 101a is formed on the left tube 101 and a right buckle 102a is formed on the right tube 102. The left buckle 101a and the right buckle 102a help the user to more easily disassemble the left side wall of the left tube 101 and the right side wall of the right tube 102 when they are in the snap-fit state, thereby improving the user experience. When the left tube 101 and the right tube 102 are opened, the user can fully expose the inner cavity of the left tube 101 and the right tube 102 to the user's field of vision. At this time, the inside of the flat straw body 1 can be cleaned, thereby solving the problem of cleaning dead corners.
[0035] like Figures 2 to 7As shown, the left side wall of the left tube 101 is a stepped wall 1c, specifically, the left outer side wall of the left tube 101 is a stepped wall 1c. The length of the stepped wall 1c is the same as the length of the left tube 101. The elastic sealing strip 2 is integrally coated onto the stepped wall 1c. The stepped wall 1c interlocks with the right side wall of the right tube 102, and the elastic sealing strip 2 is press-fitted with the right inner side wall 1d of the right tube 102. This creates an all-around seal at the mating position of the left side wall of the left tube 101 and the right side wall of the right tube 102. When the right side wall of tube 102 and the left side wall of left tube 101 are engaged, the right side wall of right tube 102 abuts against the bottom of step wall 1c. Specifically, the right outer side wall 1e of right tube 102 abuts against the bottom of step wall 1c and is supported by step wall 1c to prevent right tube 102 from rotating out of position. Step wall 1c also restricts the right side wall of right tube 102 from deforming inward, so that the shape of the flat straw body 1 formed by left tube 101 and right tube 102 remains stable.
[0036] like Figure 3 , Figure 5 and Figure 7 As shown, the stepped wall 1c consists of three parts: an arc-shaped wall 101b, a straight wall 101c, and a rounded corner wall 101d. The arc-shaped wall 101b and the straight wall 101c are connected by the rounded corner wall 101d. The arc-shaped wall 101b is the longitudinal sidewall of the stepped wall 1c, and the straight wall 101c is the transverse sidewall of the stepped wall 1c. More specifically, from the cross-section of the straw of this utility model, the cross-sectional shape of the arc-shaped wall 101b of the stepped wall 1c is arc-shaped, which is consistent with the shape of the right side wall of the right tube body 102. In this way, when the right side wall of the right tube body 102 is fastened to the stepped wall 1c, it can play a guiding role. Meanwhile, it provides tactile feedback to the user during the fastening process, making it easier to determine whether the fastening is in place. The cross-sectional shape of the straight wall 101c is horizontal, which is used to abut against the right side wall of the right tube 102 to support the right tube 102 and prevent over-extension during rotation and fastening. The rounded corner wall 101d is also arc-shaped, which allows for a smoother transition between the arc-shaped wall 101b and the straight wall 101c, reducing wear caused by friction during frequent fastening and unfastening of the right side wall of the right tube 102, thereby protecting the right tube 102 and correspondingly increasing the service life of the entire flat straw body 1.
[0037] like Figure 5 and Figure 7 As shown, the elastic sealing strip 2 is integrally coated onto the arc-shaped wall 101b.
[0038] like Figure 5 and Figure 6As shown, an installation groove 101e is provided on the arc-shaped wall 101b. The elastic sealing strip 2 is located in the installation groove 101e and is integrally coated with rubber with the left tube body 101. The installation groove 101e is also arranged along the length of the left tube body 101, so that the mating position of the left side wall of the left tube body 101 and the right side wall of the right tube body 102 forms an all-round seal. When the user sucks, the pressure difference inside and outside the straw is guaranteed, ensuring normal drinking and avoiding leakage.
[0039] like Figures 3 to 7 As shown, the elastic sealing strip 2 has a sealing protrusion 201, which is a raised structure on the surface of the elastic sealing strip 2. The elastic sealing strip 2 is press-fitted with the right inner wall 1d of the right tube 102 through the sealing protrusion 201. Since the sealing protrusion 201 is slender, when the left side wall of the left tube 101 and the right side wall of the right tube 102 are engaged, the sealing protrusion 201 will be subjected to the pressure of the right tube 102, thereby bending and deforming, increasing the contact area with the right side of the right tube 102, and further improving the sealing performance of the flat straw body 1.
[0040] Furthermore, the elastic sealing strip 2 is made of silicone. Silicone has excellent high temperature resistance, low temperature resistance and chemical stability, which can prevent the generation of harmful substances when in contact with hot drinks, ensuring drinking health. It is also elastic. When the left side wall of the left tube 101 and the right side wall of the right tube 102 are interlocked, it can smoothly achieve an interference fit with the right side of the right tube 102, ensuring normal drinking and effectively preventing the beverage from leaking out.
[0041] like Figure 1 , Figure 4 and Figure 6 As shown, the corners of the outer walls of the left tube 101 and the right tube 102 are rounded, which makes the surface of the flat straw 1 smoother and avoids the existence of sharp corners, thereby further improving its adaptability to the mouth.
[0042] like Figure 1 , Figure 4 and Figure 6 As shown, the right latch 102a and the left latch 101a are arranged vertically in a staggered manner. When the user needs to disassemble the left tube 101 and the right tube 102, which are in the latched state, he can use one finger to apply force to the left latch 101a and use another finger to apply the opposite force to the right latch 102a to release the latch, thus opening the left tube 101 and the right tube 102. In other words, the user can complete the operation with one hand, thereby freeing the user's hands and improving the convenience of use and subsequent cleaning.
[0043] like Figure 1 , Figure 4 and Figure 6As shown, the left latch 101a and the right latch 102a are located in the lower half of the left tube 101 and the right tube 201, respectively, that is, near the bottom straw opening of the flat straw body 1. In this way, when drinking, the left latch 101a and the right latch 102a can be hidden inside the cup body to avoid accidental activation.
[0044] Furthermore, the flat straw body 1 is made of PP, which gives it a certain degree of elasticity. Combined with the weak joint band 1a at the connection point between the left and right straw bodies 101 and 102, this allows the left and right straw bodies 101 and 102 to be folded more easily, while effectively reducing the possibility of breakage at the connection point due to frequent folding.
[0045] Combination Figures 1 to 7 The straw of this invention utilizes the weak joint 1a at the connection between the left tube body 101 and the right tube body 102 to fold the right tube body 102 and the left tube body 101 towards each other, and to fasten the right side of the right tube body 102 into the left side wall of the stepped wall 1c of the left tube body 101. At this time, the elastic sealing strip 2 and its sealing protrusion 201 will deform under the pressure of the right side of the right tube body 102, thereby tightly fitting with the right inner side wall 1d of the right tube body 102, providing excellent sealing between the fastening positions of the left tube body 101 and the right tube body 102. After fastening, the user can drink beverages through the flat straw body 1. The straw opening 1b of the straw body 1 is flat and has a smooth outer wall transition, so it has good fit with the mouth and good sealing performance. When it is necessary to clean the inside of the flat straw body 1, first use one finger to apply force to the left buckle 101a of the left tube body 101, and then use another finger to apply force to the right buckle 102a of the right tube body 102. The buckle can be quickly released. Then, reverse the left tube body 101 and the right tube body 102 along the weak section 1a. At this time, the inner cavity of the left tube body 101 and the right tube body 102 is fully exposed to the user's field of vision, and the user can clean the inside of the flat straw body 1.
[0046] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A spill-resistant and palatable collapsible drinking straw, characterized in that, It includes a flat suction pipe body (1), the suction pipe mouth (1b) of the flat suction pipe body (1) is flat, the flat suction pipe body (1) includes left pipe body (101) and right pipe body (102) connected with each other, the connecting position between the left pipe body (101) and the right pipe body (102) has a weak node belt (1a), the left side wall of the left pipe body (101) is integrally coated with an elastic sealing strip (2), the left side wall of the left pipe body (101) and the right side wall of the right pipe body (102) are buckled with each other, and the right inner side wall (1d) of the right pipe body (102) is interference fitted with the elastic sealing strip (2), to form a seal, the left pipe body (101) is formed with a left buckle (101a), and the right pipe body (102) is formed with a right buckle (102a).
2. A side leakage preventing and palatable detachable washable drinking straw according to claim 1, wherein The left side wall of the left pipe body (101) is a stepped wall (1c), the elastic sealing strip (2) is integrally coated on the stepped wall (1c), and the stepped wall (1c) and the right side wall of the right pipe body (102) are buckled with each other.
3. A side containment and palatable collapsible drinking straw according to claim 2, wherein, The stepped wall (1c) includes an arc wall (101b), a straight wall (101c) and a fillet wall (101d), the arc wall (101b) and the straight wall (101c) are connected through the fillet wall (101d), and the right outer side wall (1e) of the right pipe body (102) abuts against the straight wall (101c).
4. A side containment and palatable collapsible drinking straw according to claim 3, wherein, The elastic sealing strip (2) is integrally coated on the arc wall (101b).
5. A side containment and palatable collapsible drinking straw according to claim 4, wherein, The arc wall (101b) is provided with a mounting groove (101e), the elastic sealing strip (2) is arranged in the mounting groove (101e) and integrally coated with the arc wall (101b).
6. A side containment and palatable collapsible drinking straw according to any one of claims 1 to 5, wherein, The elastic sealing strip (2) has a sealing convex strip (201), and the sealing convex strip (201) is interference fitted with the right inner side wall (1d) of the right pipe body (102).
7. A side containment and palatable collapsible drinking straw according to claim 6, wherein, The material of the elastic sealing strip (2) is silica gel.
8. A side containment and palatable collapsible drinking straw according to any one of claims 1, 2, 3, 4, 5 or 7, wherein, The right buckle (102a) and the left buckle (101a) are arranged in an upper and lower staggered mode.
9. A side containment and palatable collapsible drinking straw according to claim 8, wherein, The left buckle (101a) and the right buckle (102a) are respectively located in the lower half of the left pipe body (101) and the right pipe body (102).
10. A side containment and palatable collapsible drinking straw according to claim 9, wherein, The corners of the outer walls of the left pipe body (101) and the right pipe body (102) are all fillets.
11. A side containment and palatable collapsible drinking straw according to any one of claims 1, 2, 3, 4, 5, 7, 9 or 10, wherein, The material of the flat suction pipe body (1) is PP.
Citation Information
Patent Citations
Detachable and washable straw
CN209574258U