High-elasticity TPU luggage universal wheel

Abstract

The utility model relates to the technical field of luggage accessories, in particular to a high-elasticity TPU (thermoplastic polyurethane) luggage universal wheel, which is characterized in that an annular groove is arranged on the peripheral side of a bottom wheel, a damping ring is arranged in the annular groove, a first through hole is arranged in the middle of the bottom wheel, a positioning pipe is arranged in the first through hole, the positioning pipe is rotatably connected with the bottom wheel, and the damping ring is arranged in the first through hole. Two limiting assemblies are symmetrically arranged on the two sides of the frame, each limiting assembly comprises a screw rod, a positioning seat, a cavity and a positioning sleeve, the cavities are located on the inner wall of the frame, the positioning seats and the positioning sleeves are located on the inner side of the frame, and damping rings made of elastic TPU materials are arranged in annular grooves of the bottom wheels, so that the damping rings are made of elastic TPU materials; according to the luggage wheel, vibration generated in the moving process of a luggage can be effectively absorbed and buffered, the vibration feeling felt by a user is greatly reduced, and compared with a traditional wheel made of a plastic material, the use comfort degree is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of luggage accessories, in particular to a high elasticity TPU luggage universal wheel. BACKGROUND

[0002] The luggage universal wheel is an important accessory on the luggage, with the increase of travel frequency and the increase of travel distance, the drawbacks of the traditional luggage moving mode promote the continuous innovation of the universal wheel technology.

[0003] The existing universal wheel is single in structure, and the wheel is made of plastic material, when the luggage moves, the shock is strong, the comfort is low, and the positioning pipe at the shaft of the wheel is integrated, when the wheel is damaged, it is not easy to be separately disassembled, and the practicability is low. UTILITY MODEL CONTENTS

[0004] (I) technical problems solved

[0005] In view of the defects of the prior art, the utility model provides a high elasticity TPU luggage universal wheel.

[0006] (II) technical scheme

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme: a high elasticity TPU luggage universal wheel, including frame and bottom wheel, the bottom wheel is located in the inside of frame, the top end of frame is equipped with top seat, the upper end of top seat is rotatably connected with positioning shaft;

[0008] The side of the bottom wheel is provided with an annular groove, the annular groove is provided with a damping ring, the middle part of the bottom wheel is provided with a first through hole, the first through hole is provided with a positioning pipe, the positioning pipe is rotatably connected with the bottom wheel, two limiting components are symmetrically arranged on the both sides of the frame, the limiting component includes screw rod, positioning seat, cavity and positioning sleeve, the cavity is located on the inner wall of the frame, the positioning seat and the positioning sleeve are located on the inner side of the frame, the positioning seat is fixed on the inner end of the screw rod, the screw rod penetrates the frame and is screw connected with the frame, the positioning sleeve is fixed on the inner end of the positioning seat, the both ends of the positioning pipe can be inserted into the inside of the positioning sleeve and rotatably matched with the positioning sleeve, and the positioning seat can be inserted into the inside of the cavity.

[0009] In order to improve the service life of the damping ring, the utility model improves that a plurality of anti-skid blocks are inlaid on the outer wall of the damping ring, the sizes of the plurality of anti-skid blocks are same, and the plurality of anti-skid blocks are spherical structures.

[0010] In order to make the damping ring more portable, the utility model improves that a plurality of second through holes are arranged on the side of the first through hole of the bottom wheel.

[0011] In order to make the screw convenient to operate, the utility model discloses the improvement has, the outer end of screw is equipped with the poking block.

[0012] Further, the utility model discloses the improvement has, the shock ring and antiskid block all adopt elastic TPU material.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides a kind of high elasticity TPU luggage universal wheel, with following beneficial effects:

[0015] Improve shock absorption performance: by setting up the shock ring of elastic TPU material in the annular groove of bottom wheel, can effectively absorb and buffer the vibration in the process of luggage movement, greatly reduce the vibration that user feels, compared with traditional plastic material's wheel, significantly improve the comfort of use, whether it is on the flat airport ground or bumpy outdoor road, can provide better experience for user.

[0016] Convenient to disassemble and replace: the unique limiting component design makes the disassembly of positioning pipe and bottom wheel become simple and convenient.When bottom wheel or positioning pipe appears damage, need not integral replacement universal wheel, just need to rotate screw, positioning pipe can be easily separated from positioning sleeve, and then separately replace bottom wheel or positioning pipe, reduce use cost, improve the practicability and maintenance convenience of universal wheel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the first perspective three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the second perspective three-dimensional structure schematic diagram of the utility model;

[0019] Figure 3 It is the structure schematic diagram of bottom wheel in the utility model;

[0020] Figure 4 It is the cooperation structure schematic diagram of positioning sleeve and positioning pipe in the utility model;

[0021] Figure 5 It is the structure schematic diagram of cavity in the utility model;

[0022] In the drawing: 1, frame; 2, positioning pipe; 3, top seat; 4, bottom wheel; 5, annular groove; 6, shock ring; 7, antiskid block; 8, positioning sleeve; 9, positioning seat; 10, screw; 11, poking block; 12, cavity; 13, positioning pipe; 14, first through-hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Please refer to Figures 1-5 The utility model discloses a high elasticity TPU luggage universal wheel, including frame 1 and bottom wheel 4, bottom wheel 4 is located inside frame 1, the top of frame 1 is equipped with top seat 3, the upper end of top seat 3 is rotatably connected with positioning shaft 2;

[0025] The bottom wheel 4 is provided with an annular groove 5 on the side, the annular groove 5 is provided with a damping ring 6, the middle part of the bottom wheel 4 is provided with a first through hole 14, the first through hole 14 is provided with a positioning pipe 13, the positioning pipe 13 is rotatably connected with the bottom wheel 4, the both sides of the frame 1 are symmetrically provided with two limiting assemblies, the limiting assembly includes screw rod 10, positioning seat 9, cavity 12 and positioning sleeve 8, the cavity 12 is located on the inner wall of the frame 1, the positioning seat 9 and the positioning sleeve 8 are located on the inner side of the frame 1, the positioning seat 9 is fixed in the inner end of the screw rod 10, the screw rod 10 penetrates the frame 1 and is threadedly connected with the frame 1, the positioning sleeve 8 is fixed in the inner end of the positioning seat 9, the both ends of the positioning pipe 13 can be inserted into the inside of the positioning sleeve 8 and rotatably matched with the positioning sleeve 8, the positioning seat 9 can be inserted into the inside of the cavity 12.

[0026] In the embodiment, the damping ring 6 and the anti-skid block 7 are all made of elastic TPU material, the high elasticity TPU material has shore hardness 85A-95A, and the breaking elongation is greater than or equal to 400%, which is 60% higher than the traditional plastic damping performance.

[0027] The whole connection and steering principle: the universal wheel is mainly composed of frame 1, bottom wheel 4 and other components. The top seat 3 at the top of the frame 1 is rotatably connected with the positioning shaft 2, which enables the whole universal wheel to rotate around the positioning shaft 2, so as to realize the movement of the luggage in different directions. The bottom wheel 4 is located inside the frame 1 and rotatably connected with the positioning pipe 13, so that the bottom wheel 4 can roll on the ground. During the movement of the luggage, external force acts on the frame 1, the frame 1 drives the bottom wheel 4 to rotate, and the movement of the luggage is realized.

[0028] The shock absorption principle is that a shock absorption ring 6 is arranged in the annular groove 5 on the side of the bottom wheel 4, the shock absorption ring 6 is made of elastic TPU material, and the elastic TPU has good elasticity. When the luggage moves on uneven road, the bottom wheel 4 is vibrated, the shock absorption ring 6 can absorb and buffer the vibration through the elastic deformation of itself, reduce the vibration transmission to the luggage, and thus reduce the vibration felt by the user and improve the comfort of use.

[0029] The limiting and dismounting principle is that the limiting components symmetrically arranged on both sides of the frame 1 play an important role. The limiting component comprises a screw rod 10, a positioning seat 9, a cavity 12 and a positioning sleeve 8. The two ends of the positioning pipe 13 are inserted into the positioning sleeve 8 and rotationally matched with the positioning sleeve 8, the positioning seat 9 is fixed at the inner end of the screw rod 10, the positioning sleeve 8 is fixed at the inner end of the positioning seat 9, and the positioning seat 9 can be inserted into the cavity 12 in the inner wall of the frame 1. When the bottom wheel 4 needs to be dismounted, the screw rod 10 is rotated, the threaded structure is used to move the positioning seat 9 out of the cavity 12, the positioning sleeve 8 is moved, and then the two ends of the positioning pipe 13 are separated from the positioning sleeve 8, so that the positioning pipe 13 and the bottom wheel 4 can be conveniently dismounted and replaced.

[0030] In the embodiment, a plurality of anti-skid blocks 7 are inlaid on the outer wall of the shock absorption ring 6, the plurality of anti-skid blocks 7 are of the same size and are all spherical structures.

[0031] The plurality of anti-skid blocks 7 inlaid on the outer wall of the shock absorption ring 6 can not only increase the friction between the shock absorption ring 6 and the ground to prevent the universal wheel from slipping during movement, but also protect the shock absorption ring 6 to some extent, reduce the wear of the shock absorption ring 6 and improve the service life of the shock absorption ring 6.

[0032] In the embodiment, a plurality of second through holes are arranged on the bottom wheel 4 and located on the side of the first through hole 14.

[0033] The plurality of second through holes on the side of the first through hole 14 of the bottom wheel 4 can reduce the weight of the bottom wheel 4, make the universal wheel more portable, and to some extent, do not affect the structural strength of the bottom wheel 4.

[0034] In the embodiment, a driving block 11 is arranged at the outer end of the screw rod 10.

[0035] The driving block 11 arranged at the outer end of the screw rod 10 is convenient for the user to drive the screw rod 10 by hand or a tool, so that the operation is more convenient.

[0036] The spherical structure anti-skid block 7 inlaid on the outer wall of the shock absorption ring 6 can increase the friction with the ground on the one hand to ensure the stability of the universal wheel during movement and reduce the slipping phenomenon, and on the other hand, the wear degree of the shock absorption ring 6 is reduced due to the protection of the anti-skid block 7, the service life of the shock absorption ring 6 is prolonged, and the durability of the whole universal wheel is improved.

[0037] In the description of the text, it needs to be explained that the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0038] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application.

Claims

1. A high-elasticity TPU luggage universal wheel, comprising a frame (1) and a bottom wheel (4), the bottom wheel (4) being located inside the frame (1), characterized in that: The top end of the frame (1) is provided with a top seat (3), and the upper end of the top seat (3) is rotationally connected with a positioning shaft (2); The circumferential side of the bottom wheel (4) is provided with an annular groove (5), the annular groove (5) is provided with a damping ring (6) inside, the middle part of the bottom wheel (4) is provided with a first through hole (14), the first through hole (14) is provided with a positioning tube (13) inside, the positioning tube (13) is rotationally connected with the bottom wheel (4), two limiting assemblies are symmetrically arranged on the two sides of the frame (1), the limiting assembly comprises a screw rod (10), a positioning seat (9), a cavity (12) and a positioning sleeve (8), the cavity (12) is located on the inner wall of the frame (1), the positioning seat (9) and the positioning sleeve (8) are both located on the inner side of the frame (1), the positioning seat (9) is fixed on the inner end of the screw rod (10), the screw rod (10) penetrates through the frame (1) and is threadedly connected with the frame (1), the positioning sleeve (8) is fixed on the inner end of the positioning seat (9), the two ends of the positioning tube (13) can be inserted into the inside of the positioning sleeve (8) and rotationally matched with the positioning sleeve (8), and the positioning seat (9) can be inserted into the inside of the cavity (12).

2. The high-elasticity TPU luggage caster wheel according to claim 1, characterized in that: The outer wall of the damping ring (6) is inlaid with a plurality of anti-skid blocks (7).

3. The high-elasticity TPU luggage caster wheel according to claim 2, characterized in that: The plurality of anti-skid blocks (7) are of the same size and are all spherical structures.

4. The high-elasticity TPU luggage caster wheel according to claim 3, characterized in that: A plurality of second through holes are arranged on the circumferential side of the first through hole (14) of the bottom wheel (4).

5. The high-elasticity TPU luggage caster wheel according to claim 4, characterized in that: The outer end of the screw rod (10) is provided with a knob (11).

6. The high-elasticity TPU luggage caster wheel according to claim 5, characterized in that: The damping ring (6) and the anti-skid block (7) are both made of elastic TPU material.

Images