Mute universal wheel

Abstract

The utility model discloses a mute universal wheel, which relates to the field of universal wheel structures and comprises a shaft bracket. The wheel body is arranged on the shaft bracket and can rotate on the shaft bracket; the connecting plate is arranged at the top of one end of the shaft bracket, and the mute connecting assembly is arranged between the connecting plate and the shaft bracket and can realize mute rotation of the connecting plate on the shaft bracket; the wheel body comprises a fixed wheel which is fixedly connected with the shaft bracket; the rotating wheel is arranged on the fixed wheel in a sleeving manner and can rotate on the fixed wheel in a mute manner; the mute tire is arranged on the rotating wheel in a sleeving manner; according to the silent universal wheel, noise generated in the rotating, moving and steering processes of the universal wheel can be reduced, so that the silent effect of the universal wheel is improved, and the silent requirement of a silent place is met.

Description

Technical Field

[0001] The utility model relates to the field of universal wheel structures, in particular to a silent universal wheel. Background Art

[0002] Universal wheels are a common mechanical component, which are widely used in various mobile devices, such as suitcases, shopping carts, carts, etc. Universal wheels can realize smooth movement of the device in all directions, which improves the convenience of use.

[0003] However, during the use of traditional universal wheels, due to the friction between the rotating parts, they often generate loud noises, affecting the environmental comfort. Especially in places with extremely low noise requirements such as hospitals and libraries, the noise problem of traditional universal wheels is particularly prominent. Therefore, a silent universal wheel is needed to reduce the noise generated during rotation to meet the silent requirements of silent places. Utility Model Content

[0004] The utility model aims to provide a silent universal wheel, which can reduce the noise generated by the universal wheel during rotation, movement and steering, thereby improving the silent effect of the universal wheel to meet the silent demand of silent places.

[0005] The above-mentioned optimized structure of the utility model is realized by the following technical scheme: a silent universal wheel, comprising an axle frame;

[0006] A wheel body, which is arranged on the shaft frame and can rotate on the shaft frame;

[0007] A connecting plate is arranged at the top of one end of the shaft frame, and also includes a silent connecting component, which is arranged between the connecting plate and the shaft frame and can realize silent rotation of the connecting plate on the shaft frame;

[0008] The wheel body includes a fixed wheel fixedly connected to the shaft frame;

[0009] A rotating wheel is sleeved on the fixed wheel and can rotate silently on the fixed wheel;

[0010] The silent tire is sleeved on the rotating wheel.

[0011] In some embodiments, two dustproof end covers are also included, which are respectively arranged at the connection between the shaft frame and the two ends of the fixed wheel.

[0012] In some embodiments, the silent connection assembly includes a connection sleeve, the top of which is embedded in the top of the shaft frame;

[0013] A bearing, embedded in the connecting sleeve;

[0014] A fixed shaft, passing through the connecting plate and having an interference fit with the bearing;

[0015] A sealing cover, arranged at the bottom of the connecting sleeve;

[0016] A fastener is arranged at the bottom of the fixed shaft and is fixedly connected to the fixed shaft.

[0017] In some embodiments, the connecting sleeve includes a fixing ring, which is embedded and matched with the top of the shaft frame;

[0018] The accommodating ring is arranged at the bottom of the fixing ring. The accommodating ring is provided with an accommodating cavity, and the bearing is arranged in the accommodating cavity.

[0019] In some embodiments, the shaft frame includes a mounting hole, which is disposed at the top of one end of the shaft frame, and the connecting sleeve is embedded in the mounting hole, and the mounting hole is higher than the top plane of the shaft frame.

[0020] In some embodiments, the connecting plate includes a connecting groove, which is arranged at the center of the connecting plate, and a concave ring is arranged at the bottom of the connecting groove, and the fixing ring is arranged inside the concave ring;

[0021] A limiting ring is coaxially arranged at the opening of the connecting groove, and the limiting ring abuts against the bearing.

[0022] In some embodiments, four connecting holes are provided at the four corners of the connecting plate, and the connecting holes are waist-shaped holes.

[0023] In some embodiments, the cross-section of the fixed shaft is T-shaped.

[0024] In some embodiments, the cover wraps around the bottom of the connecting sleeve.

[0025] In summary, the utility model has the following beneficial effects:

[0026] This silent universal wheel, by arranging a silent connecting component between the connecting plate and the axle frame, can effectively reduce the friction of the connecting plate when it rotates on the axle frame, and reduce the noise generated when the connecting plate rotates on the axle frame, thereby achieving a silent effect; at the same time, the silent rotation between the rotating wheel and the fixed wheel, and the use of silent tires, further reduce the noise during the rotation process, making the entire universal wheel quieter during rotation, movement, and steering. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a structural diagram of the wheel body of the utility model;

[0029] Figure 3 A bottom view of the assembly of the shaft frame, the connecting plate and the silent connecting assembly of the utility model;

[0030] Figure 4 It is a cross-sectional view of the utility model along the AA line.

[0031] In the figure: 1. axle frame; 11. mounting hole; 2. wheel body; 21. fixed wheel; 22. rotating wheel; 23. silent tire; 3. connecting plate; 31. mounting groove; 32. limiting ring; 33. connecting hole; 4. silent connecting assembly; 41. connecting sleeve; 411. fixing ring; 412. containing ring; 42. bearing; 43. fixed shaft; 44. cover; 45. fastener; 5. dustproof end cover. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] refer to Figure 1-4 A silent universal wheel comprises an axle frame 1, a wheel body 2, a connecting plate 3, a silent connecting component 4, and a dustproof end cover; a rotatable wheel body 2 is provided on the axle frame 1, a silent connecting component 4 is provided between the connecting plate 3 and the top of one end of the axle frame 1, and the silent connecting component 4 can make the connecting plate 3 rotate silently on the axle frame 1; the wheel body 2 comprises a fixed wheel 21, a rotating wheel 22 and a silent tire 23, and the fixed wheel 21 is fixedly connected to the axle frame 1; a rotating wheel 22 is sleeved on the fixed wheel 21, and the fixed wheel 21 can be a bearing, so that the rotating wheel 22 can rotate silently on the fixed wheel 21; a silent tire 23 is sleeved on the rotating wheel 22, and the silent tire 23 can reduce the noise emitted during the contact between the wheel body 2 and the ground, and through the silent rotation of the connecting plate 3 and the silent rotation of the rotating wheel 22, the noise emitted by each rotating part of the universal wheel during the rotating transportation process is reduced, thereby improving the silent effect of the universal wheel when working.

[0034] Dust-proof end covers 5 are provided at the connection points between the shaft frame 1 and both ends of the fixed wheel 21 to prevent dust and other impurities from entering the wheel body 2 and thus affecting the rotation of the wheel body 2 .

[0035] In some embodiments, the silent connection assembly 4 includes a connection sleeve 41, a bearing 42, a fixed shaft 43, a cover 44 and a fastener 45. A mounting hole 11 is provided at the top of one end of the shaft frame 1, and a connection sleeve 41 is embedded in the mounting hole 11. The mounting hole 11 can be higher than the top plane of the shaft frame 1 to form a boss structure to avoid direct contact between the top of the shaft frame 1 and the connecting plate 3, thereby avoiding friction between the connecting plate 3 and the top of the shaft frame 1 when the connecting plate 3 rotates; a bearing 42 is embedded in the connection sleeve 41, and the connecting plate 3 passes through the fixed shaft 43. 3. The cross section of the fixed shaft 43 can be T-shaped and can be interference fit with the bearing 42 to achieve fixation between the fixed shaft 43 and the fixed ring of the bearing 42; a cover 44 is provided at the bottom of the connecting sleeve 41, and a fastener 45 is provided at the bottom of the fixed shaft 43. The fastener 45 is fixedly connected to the fixed shaft 43 and can be threadedly matched with the fixed shaft 43 to facilitate the fixed connection between the fastener 45 and the fixed shaft 43. The fastener 45 can be a nut without a through hole, which can cooperate with the T-shaped structure of the fixed shaft 43 to improve the sealing performance of the silent connection component 4.

[0036] The connecting sleeve 41 includes a fixing ring 411 and a receiving ring 412. The fixing ring 411 is embedded and matched with the top of the shaft frame 1. The bottom of the fixing ring 411 is provided with a receiving ring 412, and a receiving cavity is provided in the receiving ring 412. The bearing 42 can be interference fit with the receiving cavity, so that the moving ring of the bearing 42 is fixedly connected with the receiving ring 412, so that the receiving ring 412 can rotate silently under the action of the bearing 42.

[0037] Through the above structural design, the connecting sleeve 41, the shaft frame 1, the moving ring of the bearing 42 are connected as a whole, the connecting plate 3, the fixed shaft 43, the fixed ring of the bearing 42, the cover 44 and the fastener 45 are connected as a whole, and the silent rotation of the universal wheel in any direction is achieved through the rotation between the moving ring and the fixed ring.

[0038] In some embodiments, a connecting groove 31 is provided at the center of the connecting plate 3, a concave ring is provided at the bottom of the connecting groove 31, and a fixing ring 411 is provided inside the concave ring; the distance between the bottom of the connecting plate 3 and the fixing ring 411 can be increased to avoid friction between the connecting plate 3 and the fixing ring 411 during rotation, thereby preventing noise; the cross-section of the concave ring can be an isosceles trapezoid, thereby limiting the rotation of the fixing ring 411 and improving the stability of the rotation of the fixing ring 411.

[0039] A limiting ring 32 is coaxially provided at the opening of the connecting groove 31, and the bottom of the limiting ring 32 abuts against the top surface of the fixing ring of the bearing 42. The limiting ring 32 can limit the distance between the connecting plate 3 and the connecting sleeve 41 to avoid contact between the connecting plate 3 and the connecting sleeve 41, friction and noise.

[0040] In some embodiments, the connecting plate 3 may be a long strip with four connecting holes 33 at the four corners, which can be fixedly connected to mobile equipment such as industrial carts. The connecting holes 33 may be waist-shaped holes, which can provide a larger adjustment space during the installation process, making the installation process more flexible.

[0041] In some embodiments, the sealing cover 44 wraps the bottom of the connecting sleeve 41, which can improve the sealing performance of the connecting sleeve 41, reduce the entry of dust and impurities into the connecting component 4, and extend the service life of the universal wheel.

[0042] The specific working principle is as follows:

[0043] When the mobile device equipped with the universal wheel moves, friction occurs between the wheel body 2 and the ground. Since the surface of the wheel body 2 is provided with a silent tire 23, the noise when the wheel body 2 contacts the ground can be reduced; the rotation of the wheel body 2 is due to the rotation of the rotating wheel 22 on the fixed wheel 21, and since the fixed wheel 21 is a bearing, the rotating wheel 22 rotates silently on the fixed wheel 21, thereby achieving the silent movement of the universal wheel; when steering is required, the connecting plate 3 rotates, since the connecting plate 3 is connected to the fixed ring of the bearing 42, and the shaft frame 1 is connected to the moving ring of the bearing 42, silent rotation can be achieved when the connecting plate 3 drives the fixed ring of the bearing 42 and the moving ring of the bearing 42 to rotate; through the design of three silent rotations, the friction of the universal wheel during movement, rotation and steering is reduced, thereby achieving the overall silent effect of the universal wheel.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silent universal wheel, comprising a shaft frame (1); A wheel body (2) is arranged on the shaft frame (1) and can rotate on the shaft frame (1); The connecting plate (3) is arranged on the top of one end of the shaft frame (1), and is characterized in that: It also includes a silent connection component (4), which is arranged between the connection plate (3) and the shaft frame (1) and can realize silent rotation of the connection plate (3) on the shaft frame (1); The wheel body (2) comprises a fixed wheel (21) fixedly connected to the shaft frame (1); A rotating wheel (22) is sleeved on the fixed wheel (21) and can rotate silently on the fixed wheel (21); A silent tire (23) is sleeved on the rotating wheel (22).

2. The silent universal wheel according to claim 1, characterized in that: It also includes two dustproof end covers (5), which are respectively arranged at the connection between the two ends of the shaft frame (1) and the fixed wheel (21).

3. The silent universal wheel according to claim 1, characterized in that: The silent connection assembly (4) comprises a connection sleeve (41), the top of which is embedded in the top of the shaft frame (1); A bearing (42) embedded in the connecting sleeve (41); A fixed shaft (43) passes through the connecting plate (3) and is interference fit with the bearing (42); A sealing cover (44) is arranged at the bottom of the connecting sleeve (41); A fastener (45) is disposed at the bottom of the fixed shaft (43) and is fixedly connected to the fixed shaft (43).

4. The silent universal wheel according to claim 3, characterized in that: The connecting sleeve (41) comprises a fixing ring (411) which is embedded and matched with the top of the shaft frame (1); The accommodating ring (412) is arranged at the bottom of the fixing ring (411); the accommodating ring (412) is provided with an accommodating cavity, and the bearing (42) is arranged in the accommodating cavity.

5. The silent universal wheel according to claim 4, characterized in that: The shaft frame (1) comprises a mounting hole (11) disposed at the top of one end of the shaft frame (1), the connecting sleeve (41) being embedded in the mounting hole (11), and the mounting hole (11) being higher than the top plane of the shaft frame (1).

6. The silent universal wheel according to claim 4, characterized in that: The connecting plate (3) comprises a connecting groove (31) which is arranged at the center of the connecting plate (3); a concave ring is arranged at the bottom of the connecting groove (31), and the fixing ring (411) is arranged inside the concave ring; A limiting ring (32) is coaxially arranged at the opening of the connecting groove (31), and the limiting ring (32) abuts against the bearing (42).

7. The silent universal wheel according to claim 1, characterized in that: Four connection holes (33) are provided at the four corners of the connection plate (3), and the connection holes (33) are waist-shaped holes.

8. The silent universal wheel according to claim 3, characterized in that: The cross section of the fixed shaft (43) is T-shaped.

9. The silent universal wheel according to claim 3, characterized in that: The sealing cover (44) wraps the bottom of the connecting sleeve (41).

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