Disposable telescopic chopsticks

Abstract

The utility model belongs to the technical field of chopsticks, and discloses a disposable telescopic chopstick which comprises an upper section structure body and a lower section structure body, the upper section structure body is a sleeve, the lower section structure body is a chopstick body, the chopstick body is assembled in the sleeve in a telescopic mode, and the lower end of the chopstick body extends out of the lower end of the sleeve. The sleeve is made of plastic materials in a thermoplastic forming mode, a fastening pipe section is formed at the lower end of the sleeve, the chopstick body comprises a chopstick body tight fit section with the radial size larger than that of an inner cavity of the fastening pipe section, and in the state that the chopstick body stretches out of the sleeve, the fastening pipe section tightens and fixes the chopstick body tight fit section based on elastic deformation. The telescopic chopsticks are simple in structure, thinner and suitable for disposable use.

Description

Technical Field

[0001] The utility model belongs to the technical field of chopsticks, and specifically relates to disposable chopsticks, and in particular to disposable chopsticks used for storing bucket instant noodles or similar application scenarios where conventional disposable chopsticks cannot be placed in the storage space. Background Art

[0002] Portability and environmental protection (using as little material as possible to reduce resource waste) are two important requirements for disposable chopsticks, so disposable chopsticks are made thinner and shorter than ordinary household chopsticks. However, in order to be able to use it normally, the length generally needs to be about 20cm.

[0003] At present, the tableware included in the barrel of instant noodles is a fork. For people who are used to using chopsticks, eating noodles with a fork is not a good experience. However, the diameter of the barrel of instant noodles is generally only 11-13cm, which cannot accommodate disposable chopsticks of about 20cm. Making chopsticks into two-section splicing structure or two-section telescopic structure is a feasible solution.

[0004] Existing telescopic chopsticks use a positioning structure to achieve longitudinal fixation between the two sections of the structure in the extended state. For example, the disposable telescopic chopsticks disclosed in the Chinese utility model patent with the public number CN205094095U are composed of an outer tube and an inner rod that can be telescoped in the outer tube. Two limit cards are symmetrically provided on the lower tube wall of the outer tube. The limit cards are inner recesses pressed radially on the tube wall of the outer tube. The inner recesses form chamfers on the inner wall of the outer tube that press the upper end face of the inner rod. When the inner rod is pulled out of the outer tube until the inserted end of the inner rod is clamped by the reduced diameter section of the outer tube, the lower end of the chamfer is pressed on the upper end face of the inner rod, so that it cannot retract into the tube body. For another example, the Chinese utility model patent with publication number CN220529739U discloses a telescopic chopstick, which includes a chopstick head and an outer sleeve capable of accommodating the chopstick head. The outlet end of the outer sleeve is provided with a limiting structure for limiting the chopstick head, and the tail of the chopstick head is provided with a positioning structure. When the chopstick head is pulled out of the outer sleeve, the chopstick head can be firmly fixed to the end of the outer sleeve with the help of the cooperation of the positioning structure and the limiting structure, so as to prevent the chopstick head from retracting into the outer sleeve during use.

[0005] The above-mentioned prior art solution uses a positioning structure to achieve the longitudinal fixation between the two sections of the chopsticks in the extended state. On the one hand, the setting of the positioning structure increases the structural complexity of the chopsticks and increases the processing and manufacturing costs; on the other hand, because chopsticks are slender objects used to pick up food, the lateral force on the tip of the chopsticks when picking up food is magnified several times by the lower section structure as the force arm and acts on the connection between the two sections. The insufficient connection strength of the connection between the two sections will cause the two-section chopsticks to bend or fold when connected. The positioning structure in the prior art solution does not help to strengthen the connection strength of the connection between the two sections.

[0006] How to break away from the inertial thinking and achieve the longitudinal fixation between the two sections of the structure in the extended state without setting up a positioning structure, while strengthening the connection strength at the joint, is an important direction for improving disposable telescopic chopsticks. Summary of the invention

[0007] The purpose of the utility model is to solve the above-mentioned deficiencies in the longitudinal fixation between the two sections of the existing telescopic chopsticks by jumping out of the inertial thinking and changing another angle to solve the problem of longitudinal fixation between the two sections of the structure.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: disposable telescopic chopsticks, including an upper and lower structural body, wherein the upper structural body is a sleeve, and the lower structural body is a chopstick body, the chopstick body can be telescopically assembled in the sleeve, and the lower end of the chopstick body extends out from the lower end of the sleeve, and is characterized in that the chopstick body is made of wood or bamboo material, the sleeve is thermoplastically molded by a plastic material, a fastening pipe section is molded at the lower end of the sleeve, and the chopstick body includes a chopstick body tight-fitting section whose radial size is larger than the inner cavity of the fastening pipe section, and when the chopstick body extends out of the sleeve, the fastening pipe section tightens and fixes the chopstick body tight-fitting section based on elastic deformation.

[0009] In the above scheme, when the chopstick body extends out of the sleeve, the sleeve and the chopstick body are connected and tightened based on the elastic deformation of the plastic material supplemented by the elastic deformation of the wood material or bamboo material. The matching structure of the fastening pipe section and the fastening matching chopstick body is both a connecting structure of the sleeve and the chopstick body and a fixing structure for achieving longitudinal fixation between the two. The tightening effect of achieving longitudinal fixation between the two and strengthening the connection strength of the connection between the two in the extended state is achieved. A single tubular structure is used to achieve multiple functions.

[0010] Furthermore, the chopstick body is a single body structure made of wood or bamboo material, and the sleeve is a single body structure formed by thermoplastic molding of plastic material.

[0011] Furthermore, the sleeve is made of PP material, and the ratio of the wall of the fastening pipe section of the sleeve to the outer diameter of the pipe is preferably 0.08-0.12.

[0012] Furthermore, the inner diameter of the sleeve body is larger than the inner diameter of the fastening tube section, and a limiting head is provided at the upper end of the chopstick body, and the radial dimension of the limiting head is larger than the radial dimension of the tight fitting section of the chopstick body. This structure is used to prevent the chopstick body from being pulled out of the sleeve due to excessive force when the chopstick body is pulled downward.

[0013] Furthermore, the fastening pipe section is cylindrical, and the chopstick body tight-fitting section is cylindrical matching the shape of the cylindrical inner cavity of the fastening pipe section.

[0014] Furthermore, the fastening pipe section is cylindrical, and the chopstick body tight-fitting section is cylindrical matching the shape of the inner cavity of the cylinder of the fastening pipe section.

[0015] Furthermore, the fastening pipe section is processed with a contraction groove contracting radially inwards, and the contraction groove divides the fastening pipe section into a plurality of collars, thereby achieving a better fastening effect.

[0016] Furthermore, the main body of the sleeve is a cylindrical structure.

[0017] Furthermore, the upper end of the sleeve is provided with a shrinking opening of a nearly conical structure formed based on thermoplasticity, and the inner diameter of the shrinking opening gradually shrinks from bottom to top. The minimum inner diameter of the shrinking opening is smaller than the diameter of the limiting head. The shrinking opening is formed by thermoplastic processing after the chopstick body is inserted into the sleeve from the upper end, and this structure is used to prevent the chopstick body from slipping out of the sleeve from the upper end of the sleeve.

[0018] Furthermore, the lower end of the chopstick body is a chopstick tip with a nearly conical structure that gradually shrinks from top to bottom.

[0019] Furthermore, the chopstick body tight fitting section is the chopstick body from the limiting head to the chopstick tip, and the sum of the lengths of the chopstick body tight fitting section and the limiting head is greater than the length of the main body of the sleeve, so that the chopstick body can still be fixed by the fastening pipe section when it is contracted in the sleeve, and will not slide forward from the sleeve by itself, and will not shake.

[0020] As another option, the chopstick body tight fitting section is a section of the chopstick body connected to the limiting head, and its length corresponds to the length of the fastening pipe section. This structure allows the chopstick body to be easily pulled before the last section of the tight fitting chopstick body enters the fastening pipe section during the process of pulling out the chopstick body.

[0021] As another option, the length of the tight-fitting section of the chopstick body corresponds to the length of the fastening tube section, and a part of the shrinking opening is tightly fitted with the limiting head based on the elastic deformation of the material. Through the tight fitting effect between the shrinking opening and the limiting head, the chopstick body can be fixed inside the sleeve when it is received, and will not slide out of the sleeve by itself, and at the same time, in the process of pulling out the chopstick body, before the last section of the tight-fitting chopstick body enters the fastening tube section, it can be easily pulled.

[0022] The beneficial effects of the utility model are as follows: 1. The structure is simple. The whole chopsticks are only composed of two components, the upper sleeve and the lower chopstick body, but all the functions of telescopic chopsticks are fully realized. 2. Based on the elastic deformation of plastics supplemented by the elastic deformation of bamboo and wood materials, the connection and tightening fixation between the sleeve and the chopstick body are realized through the fastening cooperation of a single tubular structure and a columnar structure. 3. The sleeve is made of plastic material with good strength and shrinkage, and the thin-walled structure is combined with the bamboo chopstick body, so that the chopsticks are made more slender and suitable for disposable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the disposable telescopic chopsticks of the utility model.

[0024] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of disposable telescopic chopsticks.

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the casing.

[0026] Figure 4 It is a structural schematic diagram of a chopstick body, wherein the sum of the lengths of the tight-fitting section of the chopstick body and the limiting head is greater than the length of the main body of the sleeve.

[0027] Figure 5 It is a structural schematic diagram of a chopstick body, wherein the length of the tight-fitting section of the chopstick body corresponds to the length of the fastening pipe section.

[0028] Figure 6 It is a schematic diagram of the structure of the front end and the rear end of the casing.

[0029] Figure 7 It is a schematic diagram of the structure of the limiting head at the tail of the chopstick body.

[0030] Figure 8 It is a schematic diagram of the matching structure between the tail of the chopstick body and the front end of the sleeve.

[0031] Fig. 9 It is a schematic diagram of the fastening action between the limiting head at the tail of the chopstick body and the shrinking opening at the tail of the sleeve.

[0032] Fig.10 It is a schematic diagram of the improved structure of the solid pipe section of the casing. DETAILED DESCRIPTION

[0033] Reference Figure 1-9 The disposable telescopic chopsticks described in the utility model include an upper sleeve 1 and a lower chopstick body 2. The chopstick body 2 is assembled in the sleeve 1, and the lower end of the chopstick body 2 extends out from the lower end of the sleeve. The chopstick body and the sleeve are both monomer structures. A fastening pipe section 12 is provided at the lower end of the sleeve 1, and the inner diameter D3 of the fastening pipe section 12 is smaller than the inner diameter D2 of the main part of the sleeve.

[0034] The diameter of the fastening pipe section 12 of the sleeve is 7 mm, the thickness of the pipe wall is 0.65 mm, and the ratio of the pipe wall to the outer diameter of the pipe is 0.093.

[0035] A limiting head 21 is provided at the upper end of the chopstick body 2, and a chopstick body tight-fitting section 22 connected to the limiting head is provided at the lower side of the limiting head 21. The maximum diameter D4 of the limiting head 21 is larger than the diameter D5 of the chopstick body tight-fitting section 22. This structure is used to prevent the chopstick body from being pulled out of the sleeve due to excessive force when the chopstick body is pulled downward.

[0036] The diameter D5 of the chopstick body tight fitting section 22 is larger than the inner diameter D3 of the sleeve fastening tube section 12. When the chopstick body tight fitting section 22 is in the fastening tube section 12, the fastening tube section 12 assists the elastic deformation of the chopstick body tight fitting section 22 based on its own elastic deformation to be fastened and fixed with the chopstick body tight fitting section 22.

[0037] The cross-section shape of any part of the sleeve and the chopstick body is circular.

[0038] The upper end of the sleeve is provided with a shrinking opening 11, and the inner diameter of the shrinking opening 11 gradually shrinks from bottom to top. The minimum inner diameter D1 of the shrinking opening 11 is smaller than the upper end diameter of the limiting head 21. The shrinking opening is formed by a thermoplastic process after the chopstick body is inserted into the sleeve from the lower end, and this structure is used to prevent the chopstick body from slipping out of the sleeve from the upper end of the sleeve.

[0039] The lower end of the chopstick body is a chopstick tip 23 of a cone-shaped structure that gradually contracts from top to bottom.

[0040] Reference Figure 4 , the figure shows an optional structural solution of the chopstick body tight fitting section 22, the chopstick body tight fitting section 22 is a section of the chopstick body from the limit head 21 to the chopstick tip 23, and the sum of the length L2 of the chopstick body tight fitting section 22 and the length L4 of the limit head 21 is greater than the length L1 of the main part of the sleeve. When the chopstick body is retracted in the sleeve, a part of the chopstick body tight fitting section 22 is still located in the fastening pipe section 12 and can still be fixed by the fastening pipe section 12, and will not slide forward from the sleeve by itself, and will not shake.

[0041] Reference Figure 5 , 9 , the figure shows another optional structural solution of the chopstick body tight fitting section 22, the length L2 of the chopstick body tight fitting section 22 corresponds to the length L3 of the fastening tube section 12, and a part of the shrinkage opening other than the minimum inner diameter is tightly fitted with the stopper head within the elastic deformation range of the material. Through the fastening effect between the shrinkage opening 11 and the stopper head 21, the chopstick body can be fixed when it is received in the sleeve, and will not slide out of the sleeve by itself, and in the process of pulling out the chopstick body, before the last section of the tight fitting chopstick body enters the fastening tube section, it can be easily pulled.

[0042] Reference Fig.10The fastening pipe section is processed with a contraction groove 121 that contracts radially inward. The contraction groove 121 divides the fastening pipe section into a plurality of collars, thereby achieving a better fastening effect.

Claims

1. Disposable telescopic chopsticks, comprising an upper and lower structure, wherein the upper structure is a sleeve, and the lower structure is a chopstick body, the chopstick body is telescopically assembled in the sleeve, and the lower end of the chopstick body extends from the lower end of the sleeve, characterized in that: The chopstick body is made of wood or bamboo material, the sleeve is thermoplastically molded from plastic material, a fastening pipe section is molded at the lower end of the sleeve, and the chopstick body includes a chopstick body tight-fitting section whose radial dimension is larger than the inner cavity of the fastening pipe section. When the chopstick body extends out of the sleeve, the fastening pipe section tightens and fixes the chopstick body tight-fitting section based on elastic deformation.

2. The disposable telescopic chopsticks according to claim 1, characterized in that: The chopstick body is a single body structure made of wood or bamboo material, and the sleeve is a single body structure formed by thermoplastic molding of plastic material.

3. The disposable telescopic chopsticks according to claim 1, characterized in that: The sleeve is made of PP material, and the ratio of the wall of the fastening pipe section of the sleeve to the outer diameter of the pipe is preferably 0.08-0.

12.

4. The disposable telescopic chopsticks according to claim 1, characterized in that: The inner diameter of the sleeve body is larger than the inner diameter of the fastening pipe section. A limiting head is provided at the upper end of the chopstick body. The radial dimension of the limiting head is larger than the radial dimension of the tight-fitting section of the chopstick body.

5. The disposable telescopic chopsticks according to claim 1, characterized in that: The fastening pipe section is a cylindrical structure, and the chopstick body tight-fitting section is a cylinder that matches the cylindrical inner cavity shape of the fastening pipe section.

6. The disposable telescopic chopsticks according to claim 1, characterized in that: The fastening pipe section is processed with a contraction groove contracting radially inwards.

7. The disposable telescopic chopsticks according to claim 1, characterized in that: The main body of the sleeve is a cylindrical structure.

8. The disposable telescopic chopsticks according to claim 1, characterized in that: The upper end of the sleeve is provided with a shrinkage opening of a nearly conical structure formed based on thermoplasticity, and the inner diameter of the shrinkage opening gradually shrinks from bottom to top.

9. The disposable telescopic chopsticks according to claim 1, characterized in that: The chopstick body tight fitting section is the chopstick body from the limiting head to the chopstick tip, and the sum of the lengths of the chopstick body tight fitting section and the limiting head is greater than the length of the sleeve main body.

10. The disposable telescopic chopsticks according to claim 1, characterized in that: The length of the tight-fitting section of the chopstick body corresponds to the length of the fastening tube section, and a part of the shrinkage opening is tightly fitted with the limiting head based on the elastic deformation of the material.

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