Silent wheel

Abstract

The application discloses a mute wheel, which comprises a rotating column, a wheel frame supporting surface is arranged on the top of the rotating column, a wheel body is arranged on one side of the rotating column, the wheel body comprises a wheel hub and a wheel core, the wheel core is arranged at the center of the wheel hub, bearings are arranged on at least one side of the wheel core, the bearings comprise bearing sleeves fixed on the end walls of the wheel core, the bearings and the bearing sleeves are made of plastic material, a convex ring part is arranged on the outer side end wall of the bearing sleeve, a plurality of mounting teeth are arranged on the outer side wall of the convex ring part, first rolling balls are arranged between two adjacent groups of the mounting teeth, a bearing outer ring is arranged on the outer side of the convex ring part, a caster is arranged on the bearing outer ring, a plurality of rib position pins are arranged on the side wall of the bearing outer ring, and second rolling balls are arranged between two adjacent groups of the rib position pins. The mute wheel solves the defects of the prior mute wheel, such as large friction sound, easy to emit sharp friction sound, poor mute effect and easy to be corroded.

Description

Technical Field

[0001] This invention relates to the field of silent wheels, and more specifically to a silent wheel. Background Technology

[0002] Silent wheels are often used in daily life and are installed on equipment or devices. For example, silent wheels are installed on the bottom of suitcases. The silent wheels of suitcases can reduce the noise between the equipment or device and the ground during movement.

[0003] Existing silent wheels use metal bearings, which produce loud friction noise, easily generate sharp friction sounds, have poor noise reduction effect, are costly, and are prone to corrosion. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a silent wheel that solves the shortcomings of existing silent wheels that use metal bearings, resulting in loud friction noise, sharp friction sounds, poor noise reduction, high cost, and susceptibility to corrosion.

[0005] The technical solution adopted in this invention is as follows:

[0006] A silent wheel includes: a rotating column, a wheel frame support surface mounted on the top of the rotating column, a wheel body mounted on one side of the rotating column, the wheel body including a hub and a wheel core, the wheel core being mounted at the center of the hub, a bearing mounted on at least one side of the wheel core, the bearing including a bearing sleeve fixed to the end wall of the wheel core, the bearing and the bearing sleeve being made of plastic, a protruding ring being provided on the outer end wall of the bearing sleeve, a plurality of mounting teeth being arranged on the outer side wall of the protruding ring, a first ball being placed between two adjacent sets of mounting teeth, a bearing outer ring being mounted on the outer side of the protruding ring, a caster being mounted on the bearing outer ring, a plurality of rib locking pins being arranged on the side wall of the bearing outer ring, and a second ball being placed between two adjacent sets of rib locking pins.

[0007] This invention uses a bearing sleeve to position the wheel core and a rib-type locking pin to position the caster so that it can rotate. This replaces the existing metal bearings and has a better noise reduction effect. Moreover, it uses plastic material directly, which is lower in cost and less prone to corrosion. This solves the defects of existing silent wheels that use metal bearings, which have loud friction noise, are prone to sharp friction noise, have poor noise reduction effect, and are prone to corrosion.

[0008] Optionally, the first or second ball bearing may be made of plastic.

[0009] Optionally, the rib locking pin is a transverse block.

[0010] Optionally, the caster may include an outer wheel body.

[0011] Optionally, the outer wheel body is made of a sound-silent material.

[0012] Optionally, the inner side of the outer wheel body is provided with multiple positioning frames.

[0013] Optionally, the caster includes a protrusion at the center, an annular ring around the outer periphery of the protrusion, a first surface of the protrusion near the bearing, a second surface away from the bearing, and several through holes penetrating the caster. The caster of this invention uses a protrusion, which facilitates installation and positioning.

[0014] Optionally, the second surface has a mounting groove at its center, and the portion of the first surface directly opposite the mounting groove protrudes outward to form a positioning flange. The outer diameter of the positioning flange gradually tapers from the bottom to the top, and the top of the positioning flange has an annular positioning groove. The positioning flange of the present invention facilitates positioning and abutting against the circular baffle.

[0015] Optionally, the thickness of the ring body is less than the thickness of the protrusion.

[0016] Optionally, the protrusion may have multiple arc-shaped blocks on its outer periphery.

[0017] (III) Beneficial Effects

[0018] 1. This invention uses a bearing sleeve to position the wheel core and a rib-type locking pin to position the caster so that it can rotate. This replaces the existing metal bearings and has a better noise reduction effect. It solves the defects of existing silent wheels that use metal bearings, which have loud friction noise, are prone to sharp friction noise, have poor noise reduction effect, and are prone to corrosion.

[0019] 2. The casters of this invention have protruding parts, which make installation and positioning convenient.

[0020] 3. The positioning flange of the present invention facilitates positioning and abuts against the circular baffle, and its installation is simple and the structure is solid. Attached image description:

[0021] Figure 1 This is a three-dimensional exploded view of the silent wheel of Embodiment 1 of the present invention;

[0022] Figure 2 This is the silent wheel of Embodiment 1 of the present invention. Figure 1 A magnified view of part A;

[0023] Figure 3 This is the silent wheel of Embodiment 1 of the present invention. Figure 1 A magnified view of part B;

[0024] Figure 4 This is a bottom view of the silent wheel of Embodiment 1 of the present invention.

[0025] The labels for the attached figures are as follows:

[0026] 1. Rotating column, 2. Wheel frame support surface, 3. Wheel body, 4. Wheel hub, 5. Wheel core, 6. Arc-shaped baffle, 7. First reinforcing rib, 8. Groove, 9. Second reinforcing rib, 10. Bearing, 11. Bearing sleeve, 12. Protruding ring, 13. Mounting tooth, 14. First ball bearing, 15. Bearing outer ring, 16. Caster, 17. Rib locking pin, 18. Second ball bearing, 19. Outer wheel body, 20. Positioning frame, 21. Protrusion, 22. Ring body, 23. First surface, 24. Second surface, 25. Through hole, 26. Mounting groove, 27. Positioning flange, 28. Mounting positioning groove, 29. Arc-shaped block, 30. Base plate, 31. Side plate, 32. Positioning column, 33. Threaded hole, 34. Circular baffle, 35. Positioning column, 36. Limiting piece, 37. Buckle head. Detailed implementation method:

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0028] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Example 1

[0030] The technical solution adopted in this invention is as follows:

[0031] Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this invention discloses a silent wheel, comprising: a rotating column 1, a wheel frame support surface 2 mounted on the top of the rotating column, a wheel body 3 mounted on one side of the rotating column, the wheel body including a hub 4 and a wheel core 5, the wheel core being mounted at the center of the hub. An arc-shaped baffle 6 is provided on the outer side of the hub, the arc-shaped baffle being connected to the hub by multiple first reinforcing ribs 7. A groove 8 is provided at the bottom of the rotating column, and multiple second reinforcing ribs 9 are provided between the hub and the bottom surface of the groove, the length of the second reinforcing ribs being greater than the length of the first reinforcing ribs.

[0032] The wheel core is equipped with a bearing 10 on at least one side. The bearing includes a bearing sleeve 11 fixed to the end wall of the wheel core. A protruding ring 12 is provided on the outer end wall of the bearing sleeve. Multiple mounting teeth 13 are arranged on the outer side wall of the protruding ring. A first ball 14 is placed between two adjacent sets of mounting teeth. A bearing outer ring 15 is mounted on the outer side of the protruding ring. A caster 16 is mounted on the bearing outer ring. Multiple rib retaining pins 17 are arranged on the side wall of the bearing outer ring. A second ball 18 is placed between two adjacent sets of rib retaining pins. In this embodiment, the first or second ball can be made of plastic or metal. The bearing and bearing sleeve are made of plastic.

[0033] The rib locking pin is a horizontal block. The caster is enclosed by an outer wheel body 19. The outer wheel body is made of a sound-absorbing material. Multiple positioning frames 20 are provided inside the outer wheel body. A mounting positioning groove 28 is formed between two adjacent positioning frames. The caster includes a protrusion 21 located in the middle. A ring body 22 is provided on the outer periphery of the protrusion. The protrusion has a first surface 23 near the bearing, a second surface 24 away from the bearing, and several through holes 25 penetrating the caster. The inner periphery of the through holes is recessed inward to form a side groove. A mounting groove 26 is provided at the center of the second surface. A positioning flange 27 is formed by the portion of the first surface directly opposite the mounting groove protruding outward. The outer diameter of the positioning flange gradually converges from the bottom to the top, and an annular positioning groove is provided at the top of the positioning flange. The thickness of the ring body is less than the thickness of the protrusion. Multiple arc-shaped blocks 29 are provided on the outer periphery of the protrusion.

[0034] The wheel frame support surface includes a base plate 30 and an inclined side plate 31 located on one side of the base plate. The base plate is provided with a plurality of positioning posts 32, and the top surface of the positioning posts is grooved downward to form a threaded hole 33.

[0035] A circular baffle 34 is provided on the outer side of the outer wheel body. A plurality of hollow positioning posts 35 are provided on the inner side of the circular baffle. A pair of limiting pieces 36 are provided on the end face of the positioning posts. A buckle head 37 is provided on the outer end of the limiting pieces.

[0036] In this embodiment, the bearing sleeve is positioned on the wheel core, and the caster is rotated by a rib-shaped locking pin, which replaces the existing hardware bearing and has a better noise reduction effect. The inner side of the circular baffle is provided with multiple hollow positioning pins, which are inserted into the annular positioning groove. The installation is simple and the structure is sturdy.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A silent wheel, characterized in that, include: A rotating column has a wheel frame support surface mounted on its top. A wheel body is mounted on one side of the rotating column. The wheel body includes a hub and a wheel core. The wheel core is mounted at the center of the hub. At least one side of the wheel core is equipped with a bearing. The bearing includes a bearing sleeve fixed to the end wall of the wheel core. The bearing and bearing sleeve are made of plastic. A protruding ring is provided on the outer end wall of the bearing sleeve. Multiple mounting teeth are arranged on the outer side wall of the protruding ring. A first ball is placed between two adjacent sets of mounting teeth. A bearing outer ring is mounted on the outside of the protruding ring. The caster has a wheel, and multiple rib-shaped locking pins are arranged on the side wall of the outer ring of the bearing. A second ball is placed between two adjacent sets of rib-shaped locking pins. The caster includes a protrusion located in the middle. A ring is provided on the outer periphery of the protrusion. Several through holes are provided on the first surface of the protrusion near the bearing and the second surface away from the bearing, which pass through the caster. A mounting groove is provided at the center of the second surface. The center of the first surface, which is directly opposite the mounting groove, protrudes outward to form a positioning flange. The outer diameter of the positioning flange gradually converges from the bottom to the top. An annular positioning groove is provided at the top of the positioning flange.

2. A silent wheel as described in claim 1, characterized in that, The first or second ball bearing is made of plastic.

3. A silent wheel as described in claim 1, characterized in that, The rib locking pin is a horizontal block.

4. A silent wheel as described in claim 1, 2, or 3, characterized in that, The caster is enclosed by an outer wheel body.

5. A silent wheel as described in claim 4, characterized in that, The outer wheel body is made of a sound-silent material.

6. A silent wheel as described in claim 5, characterized in that, The outer wheel body is provided with multiple positioning frames.

7. A silent wheel as described in claim 1, characterized in that, The thickness of the ring is less than the thickness of the protrusion.

8. A silent wheel as described in claim 1, characterized in that, The protruding part has multiple arc-shaped blocks on its outer periphery.

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