Universal wheel set capable of preventing winding of foreign matters

Abstract

The utility model provides a universal wheel set capable of preventing winding of foreign matters, which comprises a trundle seat, a connecting column arranged on the trundle seat, and a rotating shaft arranged at one end of the connecting column; the pulley is clamped on the rotating shaft; the cutting unit comprises a fixed cutting blade and a rotary cutting blade, the fixed cutting blade and the rotary cutting blade are both provided with binding surfaces which are in contact with each other, and the binding surfaces are provided with cutting edges. According to the universal wheel set capable of preventing foreign matter winding, the trundle is installed at the bottom of a luggage through the trundle base, in the rolling process of the trundle, a rope is wound on the rotating shaft with a small probability, the rope enters the position between the rotating cutting piece and the fixed cutting piece along with rotation of the rotating shaft, and the rotating cutting piece rotates along with the rotating shaft to cut the rope. And the two cutting edges are staggered intermittently, so that a rope is cut, and the phenomenon that the trundle stops due to rope winding is reduced.

Description

A type of swivel caster assembly that prevents foreign objects from getting tangled. Technical Field

[0001] This utility model relates to the field of caster technology, and more specifically to a universal wheel assembly that prevents foreign objects from getting tangled. Background Technology

[0002] Casters, also known as swivel casters, are highly flexible and can rotate freely 360°. They are widely used on equipment or parts that need to be moved, such as suitcases, refrigerators, and chairs.

[0003] Luggage is usually equipped with two sets of casters at the bottom to ensure its stability during long-distance travel. Casters also improve the portability of the luggage. However, when the casters are in use, the wheels can easily get tangled in ropes or other objects while rolling on the bottom surface, causing the casters to become obstructed and unable to roll. The tangled ropes are difficult to untangle, which in turn affects the normal use of the luggage. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies and to solve the problem of bags becoming immobile due to ropes getting tangled in the casters.

[0005] To achieve the above objectives, this utility model can be implemented through the following technical solution: a universal wheel assembly for preventing foreign object entanglement, comprising:

[0006] A caster seat, wherein a connecting post is provided on the caster seat, and a rotating shaft is provided at one end of the connecting post;

[0007] A pulley, which is engaged with the rotating shaft;

[0008] A cutting unit, comprising a fixed cutting blade and a rotating cutting blade, wherein both the fixed cutting blade and the rotating cutting blade are provided with contacting surfaces, and cutting blades are provided on the contacting surfaces;

[0009] The fixed cutting blade is disposed on the connecting column, while the rotating cutting blade is disposed on the rotating shaft.

[0010] In this embodiment of the utility model, the cutting unit further includes a support ring and a support frame, a positioning groove is provided on the rotating shaft, the support ring is fixed on the positioning groove, and the rotating cutting blade is disposed on the support ring;

[0011] The support frame is mounted on the connecting column, and the fixed cutting plate is mounted on the support frame.

[0012] In this embodiment of the utility model, at least two sets of fixed cutting blades and rotating cutting blades are provided.

[0013] In this embodiment of the utility model, both the fixed cutting blade and the rotating cutting blade are provided with reinforcing ribs.

[0014] In this embodiment of the utility model, the pulley includes a wheel body and a protective cover. The wheel body has a first groove and a second groove. The protective cover is snapped onto the first groove and the second groove. The wheel body is engaged with the rotating shaft.

[0015] In this embodiment of the utility model, a locking member is provided at the axle of the wheel body, and the locking member cooperates with the rotating shaft.

[0016] In this embodiment of the utility model, a support column is provided on the caster seat, and a spring is provided inside the support column;

[0017] A limiting platform is provided on the connecting column, and a guide column is provided on the limiting platform. The guide column slides inside the support column and abuts against the spring.

[0018] In this embodiment of the utility model, the support column is provided with a retaining ring that abuts against the limiting platform, and the connecting column is provided with a rubber pad.

[0019] In this embodiment of the utility model, a chuck is provided on the caster seat, and a fixing rod that cooperates with the support column is provided on the chuck.

[0020] In this embodiment of the utility model, a mounting frustum is provided on the caster seat.

[0021] Compared with the prior art, the advantages of this application are: by installing the caster to the bottom of the bag through the caster seat, when the caster is rolling, there is a small probability that the rope will get tangled on the axle. As the axle rotates, the rope will enter between the rotating cutting blade and the fixed cutting blade. The rotating cutting blade, with the rotation of the axle, causes the two cutting blades to intermittently cross, thereby cutting the rope and reducing the phenomenon of the caster stopping due to the rope getting tangled. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the overall assembly structure of the parts;

[0023] Figure 2 is a schematic diagram of the internal parts structure of the connecting column and pulley after separation;

[0024] Figure 3 is a schematic diagram of the exploded structure of the parts in the cutting unit;

[0025] Figure 4 is a schematic diagram of the overall half-section planar structure.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Caster seat; 11. Mounting frustum; 12. Fixing rod; 13. Chuck; 14. Support column; 15. Spring; 16. Snap ring; 2. Pulley; 21. Wheel body; 22. First groove; 23. Protective cover; 24. Locking element; 25. Second groove; 3. Connecting column; 31. Rubber pad; 32. Limiting platform; 33. Guide column; 4. Cutting unit; 40. Support frame; 41. Fixed cutting blade; 42. Rotating cutting blade; 43. Contact surface; 44. Cutting blade; 45. Reinforcing rib; 46. Bolt; 47. Support ring; 5. Rotating shaft; 51. Positioning groove. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0029] As shown in Figures 1-4, a type of omnidirectional wheel assembly designed to prevent foreign object entanglement includes:

[0030] Caster seat 1, a connecting column 3 is provided on caster seat 1, and a rotating shaft 5 is provided at one end of the connecting column 3;

[0031] Pulley 2 is engaged with rotating shaft 5;

[0032] The cutting unit 4 includes a fixed cutting blade 41 and a rotating cutting blade 42. Both the fixed cutting blade 41 and the rotating cutting blade 42 are provided with contacting surfaces 43, and the contacting surfaces 43 are provided with cutting blades 44.

[0033] The fixed cutting blade 41 is mounted on the connecting column 3, while the rotating cutting blade 42 is mounted on the rotating shaft 5.

[0034] Specifically, the caster is fixed to the bottom of the bag using the caster seat 1. When the bag moves, the pulley 2 on the caster rotates with the displacement of the bag. If there is a rope on the bottom surface, it is easy to get tangled on the pivot 5. When too much rope is tangled, the caster will be obstructed and the bag will not be able to move. In this application, the rope gradually gets tangled and enters between the fixed cutting plate 41 and the rotating cutting plate 42 along the pivot 5. As the bag moves, the pivot 5 is linked to the rotating cutting plate 42 to rotate, so that the cutting edge 44 of the rotating cutting plate 42 and the cutting edge 44 of the fixed cutting plate 41 intersect, thereby cutting the rope and reducing the problem of the caster stopping due to foreign objects getting tangled. Furthermore, the contact surfaces 43 of the fixed cutting plate 41 and the rotating cutting plate 42 need to be polished to improve the contact effect of the fixed cutting plate 41 and the rotating cutting plate 42. At the same time, the two cross sections of the fixed cutting plate 41 and the rotating cutting plate 42 are T-shaped (as shown in Figure 3). The T-shape is designed to improve the cutting effect of the rope.

[0035] As a further embodiment of this utility model, the cutting unit 4 also includes a support ring 47 and a support frame 40. A positioning groove 51 is provided on the rotating shaft 5. The support ring 47 is fixed on the positioning groove 51. The rotating cutting blade 42 is disposed on the support ring 47. The support frame 40 is disposed on the connecting column 3. The fixed cutting blade 41 is disposed on the support frame 40. The positioning groove 51 enables the rotating cutting blade 42 to rotate synchronously with the rotating shaft 5. The support ring 47 is provided with a bolt 46 that abuts against the positioning groove 51. The support ring 47 is fixed to the rotating shaft 5 by the bolt 46. At the same time, the mating surface of the rotating cutting blade 42 contacts the mating surface 43 of the fixed cutting blade 41 to improve the cutting effect on foreign objects.

[0036] As a further embodiment of this utility model, at least two sets of fixed cutting blades 41 and rotating cutting blades 42 are provided, and at most four sets of fixed cutting blades 41 and rotating cutting blades 42 are provided. The fixed cutting blades 41 or rotating cutting blades 42 are evenly distributed along the central axis of the rotating shaft 5, thereby improving and reducing the phenomenon of caster locking caused by foreign objects getting entangled.

[0037] As a further embodiment of this utility model, both the fixed cutting blade 41 and the rotating cutting blade 42 are provided with reinforcing ribs 45. The reinforcing ribs 45 improve the stability of the fixed cutting blade 41 and the rotating cutting blade 42, and reduce the phenomenon that the fixed cutting blade 41 or the rotating cutting blade 42 will tilt due to excessive wires during the cutting process.

[0038] As a further embodiment of this utility model, the pulley 2 includes a wheel body 21 and a protective cover 23. The wheel body 21 has a first groove 22 and a second groove 25. The protective cover 23 is snapped onto the first groove 22 and the second groove 25. The wheel body 21 is engaged with the rotating shaft 5. The first groove 22 is used to reduce the weight of the pulley 2, thereby reducing material consumption and improving resource utilization. The first groove 22 and the second groove 25 restrict the protective cover 23 to one side of the wheel body 21, thereby improving the protective effect on the pulley 2.

[0039] As a further embodiment provided by this utility model, a locking member 24 is provided at the axle of the wheel body 21. The locking member 24 cooperates with the rotating shaft 5. The locking member 24 can be a bolt 46 or other irregular clamp. The locking member 24 passes through the axle of the wheel body 21 and connects with the rotating shaft 5, thereby fixing the two wheels 21 to both ends of the rotating shaft 5, thereby improving the connection effect between the rotating shaft 5 and the wheel body 21.

[0040] As a further embodiment of this utility model, a support column 14 is provided on the caster seat 1, and a spring 15 is provided inside the support column 14. A limiting platform 32 is provided on the connecting column 3, and a guide column 33 is provided on the limiting platform 32. The guide column 33 slides inside the support column 14 and abuts against the spring 15. When the bag goes over a step or uneven road surface, the caster will continuously hit the bottom surface under the action of the bag. The spring 15 reduces the impact of the caster to reduce the damage to the pulley 2.

[0041] As a further embodiment of this utility model, the support column 14 is provided with a retaining ring 16 that abuts against the limiting platform 32, and the connecting column 3 is provided with a rubber pad 31. When the connecting column 3 is pressed and slides upward toward the support column 14, the rubber pad 31 contacts the retaining ring 16 to reduce the impact of the connecting column 3, thereby improving the service life of the connecting column 3. The retaining ring 16 plays a limiting role to prevent the connecting column 3 from detaching from the support column 14.

[0042] As a further embodiment of this utility model, a chuck 13 is provided on the caster seat 1, and a fixing rod 12 that cooperates with the support column 14 is provided on the chuck 13. The fixing rod 12 and the support column 14 are threadedly connected. During installation, the fixing rod 12 passes through the chuck 13 and connects with the support column 14. The chuck 13 increases the contact range between the fixing rod 12 and the caster seat 1, thereby improving the connection firmness between the support column 14 and the caster seat 1.

[0043] As a further embodiment of this utility model, the caster seat 1 is provided with a mounting platform 11, which consists of four sets. The bolts 46 fix the caster to the bag through the mounting platform 11, thereby improving the connection and fixing effect between the caster seat 1 and the bag.

[0044] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0045] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A universal wheel assembly designed to prevent foreign object entanglement, characterized in that, include: A caster seat, wherein a connecting post is provided on the caster seat, and a pivot is provided at one end of the connecting post; a pulley, wherein the pulley is engaged with the pivot; The cutting unit includes a fixed cutting blade and a rotating cutting blade, both of which have contacting surfaces and cutting blades. The fixed cutting blade is mounted on the connecting column, while the rotating cutting blade is mounted on the rotating shaft.

2. The universal wheel assembly for preventing foreign object entanglement according to claim 1, characterized in that, The cutting unit further includes a support ring and a support frame. A positioning groove is provided on the rotating shaft. The support ring is fixed on the positioning groove, and the rotating cutting blade is disposed on the support ring. The support frame is disposed on the connecting column, and the fixed cutting blade is disposed on the support frame.

3. A universal wheel assembly for preventing foreign object entanglement according to claim 2, characterized in that, At least two sets of fixed cutting blades and rotating cutting blades are provided.

4. A universal wheel assembly for preventing foreign object entanglement according to claim 2, characterized in that, Both the fixed cutting blade and the rotating cutting blade are provided with reinforcing ribs.

5. A universal wheel assembly for preventing foreign object entanglement according to claim 1, characterized in that, The pulley includes a wheel body and a protective cover. The wheel body has a first groove and a second groove. The protective cover is snapped into the first groove and the second groove. The wheel body is engaged with the rotating shaft.

6. A universal wheel assembly for preventing foreign object entanglement according to claim 5, characterized in that, A locking element is provided at the axle of the wheel body, and the locking element cooperates with the rotating shaft.

7. A universal wheel assembly for preventing foreign object entanglement according to claim 1, characterized in that, The caster seat is provided with a support column, and a spring is provided inside the support column; the connecting column is provided with a limiting platform, and a guide column is provided on the limiting platform. The guide column slides inside the support column and abuts against the spring.

8. A universal wheel assembly for preventing foreign object entanglement according to claim 7, characterized in that, The support column is provided with a retaining ring that abuts against the limiting platform, and the connecting column is provided with a rubber pad.

9. A universal wheel assembly for preventing foreign object entanglement according to claim 7, characterized in that, The caster seat is equipped with a chuck, and the chuck is equipped with a fixing rod that cooperates with the support column.

10. A universal wheel assembly for preventing foreign object entanglement according to claim 7, characterized in that, The caster seat is provided with a mounting platform.

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