Trundle assembly and air purification device

Abstract

The utility model discloses a trundle assembly and an air purification device. The trundle assembly comprises a rotating shaft, a trundle arranged on the rotating shaft in a sleeving mode, a supporting piece used for fixing the rotating shaft and a bottom cover used for fixing the trundle assembly to an air purification device body through the supporting piece. A fixing block is fixed on the bottom cover, a longitudinally-penetrating through hole is formed in the middle of the supporting piece, and a screw penetrates through the through hole to fix the supporting piece to the fixing block. According to the trundle assembly, the trundle assembly can be stably installed through one screw, material cost is saved, and time and labor are saved in the disassembly and assembly process.

Description

Technical Field

[0001] The utility model belongs to the technical field of air purification, and particularly relates to a caster assembly and an air purification device. Background Art

[0002] With the continuous improvement of the quality of life, many families currently own air purifiers and have 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 purifiers. For the convenience of moving the machine, casters are generally installed on the bottom cover of the air purifier, and the casters are usually fixed to the bottom cover of the machine body by screwing. On the one hand, in order to make the casters firmly installed, usually at least two screws are needed for each caster, which is time-consuming for installation. On the other hand, during the installation and testing process of the product, frequently moving the machine will cause the casters to be worn before shipment, affecting the appearance, and it is rather troublesome to replace the casters. Summary of the Utility Model

[0003] The utility model provides a caster assembly and an air purification device to solve the problem in the prior art that more than two screws are required to fix the casters to the bottom cover, resulting in inconvenient disassembly and assembly.

[0004] In the first aspect of the utility model, a caster assembly is provided, which includes a rotating shaft, a caster sleeved on the rotating shaft, and a support member for fixing the rotating shaft. The caster assembly is fixed to the bottom cover of the machine body through the support member. Specifically, a fixing block is fixed on the bottom cover, a longitudinally penetrating through hole is provided in the middle of the support member, and a screw passes through the through hole to fix the support member to the fixing block.

[0005] Preferably, a convex column is provided on one side of the fixing block, the convex column is sleeved in the through hole, and a threaded hole for connecting the screw is provided in the convex column.

[0006] Preferably, a receiving groove is provided on the bottom cover, and the fixing block is fixed in the receiving groove.

[0007] Preferably, the fixing block is provided with a fixing hole, and a fixing column corresponding to the fixing hole is provided in the receiving groove. The fixing hole and the fixing column are fixed by a screw.

[0008] Preferably, the fixing block is provided with a limiting hole, and a limiting column corresponding to the limiting hole is provided in the receiving groove.

[0009] Preferably, the support member is further provided with an installation groove communicating with the through hole and extending to the periphery of the support member, and the caster is located in the installation groove.

[0010] Preferably, fixing grooves extending to the end faces of the support members and used for fixing the rotating shaft are provided on two side faces of the installation groove, and two ends of the rotating shaft are clamped in the fixing grooves.

[0011] Preferably, a plane is provided on the bottom surface of the support member along the horizontal direction, and the casters are located in the plane.

[0012] Preferably, the caster includes a rotating wheel sleeved on the rotating shaft, and a shock-absorbing wheel sleeved on the outer periphery of the rotating wheel and synchronously rotating with the rotating wheel.

[0013] In a second aspect of the present invention, an air purification device is provided, which includes the caster assembly according to any one of the above technical solutions, and the caster assembly is fixed to the bottom cover of the air purification device body.

[0014] The present invention has the following beneficial effects:

[0015] (1) The present invention provides a caster assembly, which includes a rotating shaft, a caster sleeved on the rotating shaft, and a support member used for fixing the rotating shaft. The caster assembly is fixed to the bottom cover of the machine body through the support member; a fixing block is fixed to the bottom cover, a longitudinally penetrating through hole is provided in the middle of the support member, and a screw passes through the through hole to fix the support member to the fixing block. The present invention can achieve stable installation of the caster assembly with only one screw, which not only saves material costs, but also saves time and effort in the disassembly and assembly process.

[0016] (2) The present invention provides a caster assembly. A convex column is provided on one side of the fixing block, the convex column is sleeved in the through hole, and a screw hole used for connecting the screw is provided in the convex column. In the present invention, the convex column is sleeved in the through hole, and through the cooperation of the convex column and the through hole, the support member can rotate 360° around the convex column, so as to realize 360° rotation of the caster assembly. Compared with the prior art, the convex column in the present invention replaces the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the conventional universal wheel, with a simple structure and material cost savings.

[0017] (3) The present invention provides an air purification device. A receiving groove is provided on the bottom cover, and the fixing block is fixed in the receiving groove. During the installation and testing process of the air purification device, it is not necessary to install the caster assembly, and the installation can be carried out when the product is shipped, which can avoid wear of the caster assembly and affect the appearance. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Additionally, in the drawings, the same components are denoted by the same reference numerals, and the drawings are not drawn to actual scale.

[0019] Figure 1 Schematic assembly structure diagram of the caster assembly in a specific embodiment of the present invention;

[0020] Figure 2 Structural diagram of the caster assembly in a specific embodiment of the present invention;

[0021] Figure 3 Structural diagram of the support member in a specific embodiment of the present invention;

[0022] Figure 4 Exploded structural diagram of the caster assembly in a specific embodiment of the present invention;

[0023] Figure 5 Structural diagram of the air purifier in a specific embodiment of the present invention.

[0024] Explanation of reference numerals in the drawings

[0025] 100 - Caster assembly;

[0026] 110 - Rotating shaft;

[0027] 120 - Caster; 121 - Rotating wheel; 122 - Shock-absorbing wheel;

[0028] 130 - Support member; 131 - Through hole; 132 - Installation groove; 133 - Fixing groove; 134 - Screw; 135 - Plane;

[0029] 140 - Fixing block; 141 - Convex column; 1411 - Threaded hole; 142 - Fixing hole; 143 - Limiting hole;

[0030] 200 - Air purification device;

[0031] 210 - Bottom cover;

[0032] 220 - Accommodating groove; 221 - Fixing column; 222 - Limiting column. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the disclosed embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. Specific embodiments

[0036] As Figures 1 - 5 shown, in the first aspect of this embodiment, a caster assembly (100) is provided, including a rotating shaft (110), a caster (120) sleeved on the rotating shaft (110), and a support member (130) for fixing the rotating shaft (110). The caster assembly (100) is fixed to the bottom cover (210) of the machine body through the support member (130).

[0037] Specifically, a fixing block (140) is fixed to the bottom cover (210). A longitudinally penetrating through-hole (131) is provided in the middle of the support member (130), and a screw (134) passes through the through-hole (131) to fix the support member (130) to the fixing block (140).

[0038] In this embodiment, a fixing block (140) is fixed to the bottom cover (210). Fixing the support member (130) to the fixing block (140) with one screw (134) can achieve fixing the caster assembly (100) to the bottom cover (210). On the one hand, compared with the conventional method of using more than two screws (134) for fixing, the material cost is saved; on the other hand, using one screw (134) for fixing can achieve quick disassembly and assembly, saving time and effort.

[0039] Please refer to Figures 2 - 4, in a more preferred embodiment, a convex post (141) is provided on one side of the fixing block (140). The convex post (141) is sleeved in the through hole (131). A threaded hole (1411) for connecting the screw (134) is provided in the convex post (141). The screw (134) passes through the through hole (131) and is fixed in the threaded hole (1411) to fix the support member (130) on the fixing block (140). In this embodiment, the convex post (141) is sleeved in the through hole (131). Through the cooperation of the convex post (141) and the through hole (131), the support member (130) can rotate 360° around the convex post (141), so as to realize the 360° rotation of the caster assembly (100). Compared with the prior art, the convex post (141) in the present utility model replaces the metal bearing and the oil-impregnated bearing cooperating with the metal bearing in the conventional universal caster, with a simple structure and material cost savings. Preferably, both the fixing block (140) and the support member (130) are made of wear-resistant materials, such as PA66 + 30% GF.

[0040] In a more preferred embodiment, the bottom cover (210) is provided with a receiving groove (220), and the fixing block (140) is fixed in the receiving groove (220). In this embodiment, by fixing the fixing block (140) in the receiving groove (220), the flatness of the end face of the bottom cover (210) can be ensured, so that the air purification device (200) has stability even without installing the caster assembly (100). Therefore, during the installation and testing process of the air purification device (200), the caster assembly (100) does not need to be installed, and it can be installed when the product is shipped to avoid wear of the caster assembly (100) and affect the appearance.

[0041] In a more preferred embodiment, the fixing block (140) is provided with fixing holes (142), and fixing posts (221) corresponding to the fixing holes (142) are provided in the receiving groove (220). The fixing holes (142) and the fixing posts (221) are fixed by screws (134). Specifically, to ensure the firm connection of the fixing block (140), the number of the fixing holes (142) and the fixing posts (221) is at least 2. In this embodiment, the number of the fixing holes (142) is 2, and the number of the fixing posts (221) is also 2.

[0042] In a more preferred embodiment, the fixing block (140) is provided with limiting holes (143), and limiting posts (222) corresponding to the limiting holes (143) are provided in the receiving groove (220) to facilitate the quick installation of the fixing block (140) in the receiving groove (220).

[0043] Please refer to Figure 3, in a more preferable embodiment, the support member (130) is further provided with a mounting groove (132) that communicates with the through hole (131) and extends to the periphery of the support member (130), and the caster (120) is located in the mounting groove (132). Specifically, one end of the mounting groove (132) communicates with the through hole (131), and the other end extends to the periphery of the support member (130), reserving sufficient space for the movement of the caster (120) to facilitate the installation of the caster (120).

[0044] In a more preferable embodiment, both side surfaces of the mounting groove (132) are provided with fixing grooves (133) that extend to the end surface of the support member (130) for fixing the rotating shaft (110), and both ends of the rotating shaft (110) are clamped in the fixing grooves (133). In this embodiment, the rotating shaft (110) is detachably installed in the fixing groove (133). When disassembling, only need to pull the rotating shaft (110) forcefully along the extending direction of the fixing groove (133), and the disassembly and assembly are convenient.

[0045] In a more preferable embodiment, the bottom surface of the support member (130) is provided with a flat surface (135) in the horizontal direction, and the caster (120) is located in the flat surface (135), which can prevent sundries on the ground from winding and blocking the caster (120).

[0046] Please refer to Figure 4 , in a more preferable embodiment, the caster (120) includes a rotating wheel (121) sleeved on the rotating shaft (110), and a shock-absorbing wheel (122) sleeved on the outer periphery of the rotating wheel (121) and synchronously rotating with the rotating wheel (121). By sleeving the shock-absorbing wheel (122) on the outer periphery of the rotating wheel (121), the smoothness of the air purification device (200) during operation is ensured.

[0047] Please refer to Figure 5 , in the second aspect of this embodiment, an air purification device (200) is provided, which includes a caster assembly (100), and the caster assembly (100) is fixed to the bottom cover (210) of the body of the air purification device (200). It is easy to understand that the number of the caster assemblies (100) is at least 3 to ensure the stable operation of the body.

[0048] The above are only the specific implementation manners of the present invention, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A caster assembly, comprising a rotating shaft (110), a caster (120) sleeved on the rotating shaft (110), and a support member (130) for fixing the rotating shaft (110), wherein the caster assembly (100) is fixed to the bottom cover (210) of the machine body through the support member (130), and is characterized in that, A fixing block (140) is fixed to the bottom cover (210). A through hole (131) penetrating longitudinally is provided in the middle of the support member (130). A screw (134) passes through the through hole (131) to fix the support member (130) to the fixing block (140).

2. The caster assembly according to claim 1, wherein, A convex column (141) is provided on one side of the fixing block (140). The convex column (141) is sleeved in the through hole (131), and a threaded hole (1411) for connecting the screw (134) is provided in the convex column (141).

3. The caster assembly according to claim 2, wherein, The bottom cover (210) is provided with a receiving groove (220), and the fixing block (140) is fixed in the receiving groove (220).

4. The caster assembly according to claim 3, wherein, The fixing block (140) is provided with a fixing hole (142). A fixing post (221) corresponding to the fixing hole (142) is provided in the receiving groove (220). The fixing hole (142) and the fixing post (221) are fixed by a screw (134).

5. The caster assembly according to claim 4, characterized in that, The fixing block (140) is provided with a limiting hole (143). A limiting post (222) corresponding to the limiting hole (143) is provided in the receiving groove (220).

6. The caster assembly according to claim 1, wherein, The support member (130) is further provided with a mounting groove (132) communicating with the through hole (131) and extending to the periphery of the support member (130). The caster (120) is located in the mounting groove (132).

7. The caster assembly according to claim 6, characterized in that, Fixing grooves (133) for fixing the rotating shaft (110) are provided on both side surfaces of the mounting groove (132) and extend to the end surface of the support member (130). Both ends of the rotating shaft (110) are clamped in the fixing grooves (133).

8. The caster assembly according to claim 1, characterized in that, A flat surface (135) is provided on the bottom surface of the support member (130) in the horizontal direction. The caster (120) is located in the flat surface (135).

9. The caster assembly according to claim 1, wherein The caster (120) includes a rotating wheel (121) sleeved on the rotating shaft (110), and a shock-absorbing wheel (122) sleeved on the outer periphery of the rotating wheel (121) and rotating synchronously with the rotating wheel (121).

10. An air purification device, characterized in that, Including the caster assembly (100) according to any one of claims 1-9, the caster assembly (100) is fixed to the bottom cover (210) of the body of the air purification device (200).

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