Universal wheel assembly

Abstract

The utility model relates to a universal wheel assembly which comprises a supporting seat body, a guide sleeve is fixedly connected to the top of the supporting seat body, a positioning mechanism connected with a bottom cover of an air purifier is arranged in the guide sleeve, and two sinking grooves are symmetrically formed in the bottom of the supporting seat body. The rotating wheel is arranged on the rotating shaft in a sleeving mode, the two ends of the rotating shaft are embedded into the two sinking grooves of the supporting seat body respectively, the rotating rod is controlled to penetrate through the guide sleeve on the supporting seat body, the threaded rod is directly locked with the nut on the bottom cover of the air purifier, and then the universal wheel is installed. The supporting seat body can be assembled only through the threaded rod fixedly connected with the rotating rod, meanwhile, a metal bearing in an existing universal wheel and an oil-retaining bearing matched with the metal bearing are replaced, and therefore the material cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, and particularly relates to a universal wheel assembly. Background Art

[0002] With the continuous improvement of the quality of life, many families currently own air purifiers, and there are also different choices for the appearance of air purifiers. Some users prefer the appearance of air purifiers without casters, but it is rather strenuous to move the air purifier; in order to facilitate the movement of the machine, universal wheels are generally installed on the bottom cover of the air purifier, and usually, the universal wheels are fixed to the bottom cover of the machine body by screwing; on the one hand, in order to make the universal wheels installed stably, usually at least two screws are required for each universal wheel, and the installation is time-consuming; on the other hand, during the installation test of the product, frequently moving the machine will cause the universal wheels to be worn before shipment, affecting the appearance, and it is rather troublesome to replace the universal wheels. Content of the Utility Model

[0003] The technical problems solved by this solution are as follows:

[0004] (1) How to solve the problems that the structure of the existing universal wheels is relatively complex and the installation process is rather complicated.

[0005] The purpose of the utility model can be realized by the following technical solutions: A universal wheel assembly includes a support seat body, a guide sleeve is fixedly connected to the top of the support seat body, a positioning mechanism for connecting with the bottom cover of the air purifier is arranged inside the guide sleeve, and two sink grooves are symmetrically formed at the bottom of the support seat body;

[0006] The positioning mechanism includes a rotating rod slidably sleeved on the inner wall of the guide sleeve, a threaded rod fixedly connected to the top end of the rotating rod and threadedly connected with the nut on the bottom cover of the air purifier, and a nut fixedly connected to the bottom end of the rotating rod for preventing the support seat body from falling off.

[0007] A further technical improvement of the utility model lies in that: The same rotating shaft is jointly embedded between the two sink grooves, a rotating wheel is rotatably arranged in the middle of the rotating shaft, and a shock-absorbing sleeve is fixedly sleeved on the outer wall of the rotating wheel; By sleeving the rotating wheel on the rotating shaft, then respectively embedding the two ends of the rotating shaft into the two sink grooves of the support seat body, controlling the rotating rod to pass through the guide sleeve on the support seat body, and directly locking the threaded rod with the nut on the bottom cover of the air purifier, the installation of the universal wheel is completed. The above assembly method is relatively simple, and only the threaded rod fixedly connected with the rotating rod is required to complete the assembly of the support seat body. At the same time, the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the existing universal wheel are replaced, thus saving the material cost.

[0008] A further technical improvement of the present utility model lies in that: a notch is provided at the top of the rotating rod, and a limiting piece for preventing the rotating rod from rotating when the support seat body rotates is sleeved on the outer wall of the notch.

[0009] A further technical improvement of the present utility model lies in that: a plurality of reinforcing ribs for fixing the guide sleeve are fixedly installed at the top of the support seat body.

[0010] A further technical improvement of the present utility model lies in that: an arc surface for increasing its height from the ground is provided at the bottom of the support seat body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] When the present utility model is in use, by sleeving the rotating wheel on the rotating shaft, then respectively embedding the two ends of the rotating shaft into the two sinking grooves of the support seat body, controlling the rotating rod to pass through the guide sleeve on the support seat body, and directly locking the threaded rod with the nut on the bottom cover of the air purifier, the installation of the universal wheel is completed. The above assembly method is relatively simple. The assembly of the support seat body can be completed only by the threaded rod fixedly connected to the rotating rod. At the same time, the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the existing universal wheel are replaced, thus saving the material cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0014] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is an exploded schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 is a three-dimensional schematic diagram of the structure of the positioning mechanism of the present utility model;

[0017] Figure 4 is a three-dimensional schematic diagram of the overall bottom structure of the present utility model.

[0018] In the figure: 1, limiting piece; 2, guide sleeve; 3, support seat body; 4, rotating wheel; 5, reinforcing rib; 6, positioning mechanism; 7, sinking groove; 8, rotating shaft; 9, arc surface; 61, notch; 62, rotating rod; 63, nut; 64, threaded rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 - 4 As shown, a universal wheel assembly includes a support seat body 3. A guide sleeve 2 is fixedly connected to the top of the support seat body 3. A positioning mechanism 6 connected to the bottom cover of the air purifier is arranged inside the guide sleeve 2. Two counterbores 7 are symmetrically formed at the bottom of the support seat body 3.

[0021] Please refer to Figures 1 - 4 As shown, the above-mentioned positioning mechanism 6 includes a rotating rod 62 slidably sleeved on the inner wall of the guide sleeve 2. A threaded rod 64 threadedly connected to the nut on the bottom cover of the air purifier is fixedly connected to the top end of the rotating rod 62. A nut 63 for preventing the support seat body 3 from falling off is fixedly connected to the bottom end of the rotating rod 62.

[0022] Please refer to Figure 2 and Figure 3 As shown, the same rotating shaft 8 is jointly embedded between the two counterbores 7. A rotating wheel 4 is rotatably arranged in the middle of the rotating shaft 8. A shock-absorbing sleeve is fixedly sleeved on the outer wall of the rotating wheel 4. By sleeving the rotating wheel 4 on the rotating shaft 8, and then respectively embedding the two ends of the rotating shaft 8 into the two counterbores 7 of the support seat body 3, controlling the rotating rod 62 to pass through the guide sleeve 2 on the support seat body 3, and directly locking the threaded rod 64 with the nut on the bottom cover of the air purifier, the installation of the universal wheel is completed. The above assembly method is relatively simple. The assembly of the support seat body 3 can be completed only by the threaded rod 64 fixedly connected to the rotating rod 62. At the same time, the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the existing universal wheel are replaced, thus saving the material cost.

[0023] Please refer to Figure 1 and Figure 3 As shown, a notch 61 is formed at the top of the above-mentioned rotating rod 62. A limiting piece 1 for preventing the rotating rod 62 from rotating when the support seat body 3 rotates is sleeved on the outer wall of the notch 61.

[0024] Please refer to Figure 1 As shown, a plurality of reinforcing ribs 5 for fixing the guide sleeve 2 are fixedly installed on the top of the above-mentioned support seat body 3.

[0025] Please refer to Figure 2 and Figure 4 As shown, an arc surface 9 for increasing the height between it and the ground is formed at the bottom of the above-mentioned support seat body 3.

[0026] Working principle: When the utility model is in use, first, during assembly, the rotating wheel 4 is sleeved on the rotating shaft 8, and then both ends of the rotating shaft 8 are respectively embedded into the two sinking grooves 7 of the support seat body 3. The control rotating rod 62 passes through the guide sleeve 2 on the support seat body 3, and the threaded rod 64 is directly locked with the nut on the bottom cover of the air purifier, thus completing the installation of the universal wheel. The above assembly method is relatively simple, and the assembly of the support seat body 3 can be completed only by the threaded rod 64 fixedly connected to the rotating rod 62. At the same time, the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the existing universal wheel are replaced, thereby saving the material cost; during the movement of the air purifier, the support seat body 3 rotates around the rotating rod 62, and the rotating wheel 4 rotates around the rotating shaft 8, realizing a 360-degree rotation as a whole.

[0027] The above is only the preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form an equivalent embodiment with equivalent changes within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modification, equivalent change and modification made to the above embodiment based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A universal wheel assembly, comprising a support seat body (3), characterized in that: The top of the support base body (3) is fixedly connected to a guide sleeve (2), the interior of the guide sleeve (2) is provided with a positioning mechanism (6) connected to the bottom cover of the air purifier, and the bottom of the support base body (3) is symmetrically provided with two sink grooves (7); The positioning mechanism (6) comprises a rotating rod (62) slidably sleeved with the inner wall of the guide sleeve (2); the top end of the rotating rod (62) is fixedly connected to a threaded rod (64) threadedly connected to a nut on the bottom cover of the air purifier; and the bottom end of the rotating rod (62) is fixedly connected to a nut (63) for preventing the support seat body (3) from falling off.

2. The universal wheel assembly according to claim 1, characterized in that: A common rotating shaft (8) is embedded between the two sink grooves (7), a rotating wheel (4) is rotatably arranged in the middle of the rotating shaft (8), and a shock-absorbing sleeve is fixedly arranged on the outer wall of the rotating wheel (4).

3. The universal wheel assembly according to claim 1, characterized in that: A cutout (61) is provided at the top of the rotating rod (62), and a limiting piece (1) is sleeved on the outer wall of the cutout (61) for preventing the rotating rod (62) from rotating when the supporting seat body (3) rotates.

4. The universal wheel assembly according to claim 1, characterized in that: A plurality of reinforcing ribs (5) for fixing the guide sleeve (2) are fixedly mounted on the top of the support seat body (3).

5. The universal wheel assembly according to claim 1, characterized in that: The bottom of the support seat body (3) is provided with a curved surface (9) for increasing its height from the ground.

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