Universal wheel assembly and cleaning equipment with same

Abstract

The embodiment of the utility model discloses a universal wheel assembly and cleaning equipment with the universal wheel assembly. The universal wheel assembly comprises a universal wheel support and a universal wheel, the universal wheel is accommodated in the universal wheel support and can rotate around a universal wheel shaft; wherein the upper surface of the universal wheel support is provided with a cavity covering part, and the cavity covering part is used for sealing a cavity in the upper surface of the universal wheel support. According to the universal wheel assembly, the amplitude of the shell can be reduced when the universal wheel assembly collides with other objects, the amplification effect of the cavity on sound generated by collision is reduced, the collision sound is reduced, and the noise reduction effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of smart home technology, and in particular to a universal wheel assembly and a cleaning device having the same. Background Art

[0002] The universal wheel assembly can be installed on the smart cleaning equipment to realize its mobile walking function. It can also be installed on other objects that need to have mobile functions, such as mobile doors, bags or other smart devices. Since the universal wheel needs to move flexibly, the place where the shaft hole fits needs to be matched with clearance, but when passing through the gaps of the floor or floor tiles, a certain impact sound will be generated, resulting in the possibility of relatively loud noise during the operation of the universal wheel.

[0003] Therefore, it is necessary to provide an improved universal wheel assembly and a cleaning device having the same to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, according to a first aspect of the present utility model, a universal wheel assembly is provided, comprising:

[0006] Universal wheel support;

[0007] A universal wheel, the universal wheel is accommodated in the universal wheel support and is rotatable around the universal wheel shaft;

[0008] Wherein, a cavity covering piece is arranged on the upper surface of the universal wheel support, and the cavity covering piece is used to seal the cavity on the upper surface of the universal wheel support.

[0009] Preferably, there are multiple cavities on the upper surface of the universal wheel support, and there is one cavity covering member, which is arranged on the top of the multiple cavities.

[0010] Preferably, there are multiple cavities on the upper surface of the universal wheel support, and a cavity covering member is disposed above each cavity, and each cavity covering member matches the shape and size of the corresponding cavity.

[0011] Preferably, the plurality of cavities include a universal wheel accommodating cavity, the bottom surface of the universal wheel accommodating cavity protrudes upward to form a universal wheel mounting portion, and the universal wheel is mounted in the universal wheel mounting portion;

[0012] The cavity cover is provided with a mounting notch, which corresponds to the universal wheel mounting portion and is used to avoid the universal wheel mounting portion.

[0013] Preferably, the plurality of cavities include a universal wheel accommodating cavity, the bottom surface of the universal wheel accommodating cavity protrudes upward to form a universal wheel mounting portion, and the universal wheel is mounted in the universal wheel mounting portion;

[0014] A recess is provided on the bottom surface of the cavity cover, and the recess corresponds to the universal wheel mounting portion and is used to avoid the universal wheel mounting portion.

[0015] Preferably, baffles are provided between the plurality of cavities, and baffle slots are provided on the bottom surface of the cavity cover, and the baffle slots match the baffles.

[0016] Preferably, the cavity cover and the universal wheel support are connected in any one of an adhesive connection, an interference connection, a secondary molding connection, a screw connection, and a clamping connection.

[0017] Preferably, the cavity cover is configured as a thermoplastic elastomer.

[0018] Preferably, the thickness of the cavity covering piece matches the depth of the cavity, so as to fill the interior of the cavity.

[0019] According to a second aspect of the utility model, a cleaning device is provided, comprising a universal wheel assembly as described in any one of the above embodiments, wherein the universal wheel assembly is arranged at the bottom of the cleaning device.

[0020] The universal wheel assembly and the cleaning device having the universal wheel assembly provided in the embodiments of this specification have the following technical effects:

[0021] The universal wheel assembly provided in the embodiment of the present specification, by providing a cavity cover on the universal wheel support seat, uses the cavity cover to seal the cavity on the upper surface of the universal wheel support seat, thereby reducing the amplitude of the shell of the universal wheel assembly when it collides with other objects, reducing the amplification effect of the cavity on the sound generated by the collision, reducing the impact sound, and achieving the effect of shock absorption and noise reduction.

[0022] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions and advantages in the embodiments of this specification or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of a universal wheel assembly provided by an embodiment of this specification;

[0025] Figure 2 It is a front view of a universal wheel assembly provided by one embodiment of this specification;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of a universal wheel assembly with a cavity cover provided by an embodiment of the present specification;

[0027] Figure 4 is a three-dimensional structural schematic diagram of a universal wheel assembly with a cavity cover provided by another embodiment of the present specification;

[0028] Figure 5 is a three-dimensional structural schematic diagram of a universal wheel assembly with multiple cavity covers provided by an embodiment of the present specification;

[0029] Figure 6 is a three-dimensional structural schematic diagram of a universal wheel assembly with multiple cavity covers provided by another embodiment of the present specification;

[0030] Figure 7 It is a schematic structural diagram of a cleaning device with a universal wheel assembly provided in one embodiment of the present specification.

[0031] Description of reference numerals:

[0032] 10. Universal wheel support; 101. Cavity; 102. Universal wheel mounting portion; 103. Cavity cover; 20. Universal wheel; 201. Universal wheel shaft; 1011. Universal wheel accommodating cavity; 1012. Baffle; 30. Rotating shaft; 40. Universal wheel assembly; 50. Cleaning equipment. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this specification.

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the embodiments of this specification and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of this specification described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0035] In the embodiments of this specification, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the embodiments of this specification.

[0036] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "parts" and "pieces" appearing in this article may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" appearing in this article may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0037] See also Figure 1-Figure 6 The embodiments of this specification can provide a universal wheel assembly, which can be used in equipment that needs to move, such as cleaning equipment, sliding doors, bags, etc.

[0038] like Figure 1 , Figure 2 As shown, the universal wheel assembly provided in some embodiments of the present specification may include a universal wheel support 10 and a universal wheel 20, such as Figure 2 As shown, a universal wheel shaft 201 is provided inside the universal wheel 20, and both ends of the universal wheel shaft 201 can be connected to the universal wheel support 10. The universal wheel 20 can be installed on the universal wheel shaft 201, and then the universal wheel 20 is installed in the universal wheel support 10. The universal wheel 20 can rotate around the universal wheel shaft 201, thereby realizing the function of moving and walking.

[0039] like Figure 1 As shown, generally, a cavity 101 is formed on the upper surface of the universal wheel support 10. The universal wheel assembly may collide with other obstacles during walking, such as passing through the gap between the floor or floor tiles. Due to the clearance between the universal wheel shaft holes, the universal wheel support will produce a collision sound, and the cavity 101 on the universal wheel support 10 has an amplifying effect on the collision sound, which will increase the collision sound generated by the universal wheel assembly. Figure 3 As shown, in some embodiments of the present specification, a cavity cover 103 can be provided on the upper surface of the caster support 10. The cavity cover 103 can be provided above the cavity 101 on the upper surface of the caster support 10 to seal the cavity 101 on the upper surface of the caster support 10. In this way, when the caster 20 collides with other objects, the amplitude of the shell of the caster support 10 can be reduced, and the amplification effect of the cavity 101 on the impact sound can be reduced, thereby achieving the effect of shock absorption and noise reduction.

[0040] The material of the cavity cover 103 can be an elastic material to increase the effect of shock absorption and noise reduction, and a relatively light material can be selected so as not to increase the overall weight of the universal wheel assembly too much. For example, a thermoplastic elastomer can be selected, such as rubber, elastic plastic, elastic foam, potting glue, etc. The specific selection can be based on actual needs, and the embodiments of this specification do not make specific limitations.

[0041] In addition, in some embodiments of the present specification, a detachable connection method can be adopted between the cavity cover 103 and the universal wheel support 10, and the connection method can be any one of adhesive connection, interference connection, secondary molding connection, screw connection, and clamping connection. These connection methods can facilitate the installation and disassembly of the cavity cover 103, and at the same time, there is no need to change the structure of the universal wheel assembly too much. For example, the cavity covering member 103 is glued to the edge of the cavity 101 in the universal wheel support 10 with glue; or, the size of the cavity covering member 103 is designed to be slightly larger than the outer diameter of the cavity 101 in the universal wheel support 10, so that the cavity covering member 103 can be interference-connected with the cavity 101 in the universal wheel support 10; or, according to the shape and size of the cavity 101 in the universal wheel support 10, the cavity covering member 103 is secondary molded and installed in the cavity 101; or, the cavity covering member 103 is directly connected to the universal wheel support 10 with screws; or, a slot is provided in the inner wall of the cavity 101 of the universal wheel support 10, and a matching protrusion is provided on the outer edge of the cavity covering member 103, and the cavity covering member 103 is connected to the universal wheel support 10 with the cooperation between the protrusion on the cavity covering member 103 and the slot in the cavity 101.

[0042] The connection method between the cavity cover 103 and the universal wheel support 10 can be selected according to the material of the cavity cover 103 and the actual usage scenario, or it can be a combination of multiple connection methods, and the embodiments of this specification do not make specific limitations on this.

[0043] In some embodiments of the present specification, the thickness of the cavity cover 103 may match the depth of the cavity 101 in the universal wheel support 10. Figure 1 As shown, there may be multiple cavities 101. When the depths of different cavities 101 are different, the thickness of the cavity cover 103 at the corresponding position can be adjusted. In this way, after the cavity cover 103 is installed in the universal wheel support 10, the cavity 101 can be filled, and the cavity cover 103 can be made of elastic material, which can facilitate the installation of the cavity cover 103, avoid the cavity cover 103 from colliding with the inner wall of the cavity 101 when the universal wheel 20 collides with other objects, increase the shock absorption effect of the universal wheel support 10 shell, and then reduce the impact sound generated when the universal wheel assembly collides, and play a shock absorption and noise reduction effect.

[0044] The thickness of the cavity cover 103 can match the depth of the cavity 101 in the universal wheel support 10, which can be understood as the thickness of the cavity cover 103 being the same as the depth of the cavity 101 in the universal wheel support 10, or the difference between the thickness of the cavity cover 103 and the depth of the cavity 101 is within a preset range, which facilitates the installation of the cavity cover 103. Of course, the shape and size of the cavity cover 103 are also matched with the shape and size of the cavity 101 in the universal wheel support 10 to achieve the purpose of sealing the cavity 101.

[0045] like Figure 1 As shown, the cavities 101 on the universal wheel support 10 in the embodiment of this specification are generally multiple, such as Figure 1 The number shown is 3, but it can be 2, 4 or other numbers depending on the actual situation. Figure 3 As shown, in some embodiments of the present specification, a cavity cover 103 may be provided, that is, an integral cavity cover 103 may be provided, and this cavity cover 103 may be provided on top of multiple cavities 101, so that multiple cavities 101 may be sealed together to achieve the effect of vibration reduction and noise reduction. Figure 3 As shown, in this scenario, the size of the cavity cover 103 can be the same as the size of the upper surface of the universal wheel support 10. In order to better fill the cavity 101, the shape, size and thickness of the lower surface of the cavity cover 103 can be set according to the shapes and sizes of the multiple cavities 101 in the universal wheel support 10, so that the cavity cover 103 can fill each cavity 101 well, and reduce the amplitude of the shell when the universal wheel assembly collides as much as possible, reducing the impact sound. For example: Figure 1 Baffles are provided between the multiple cavities 101. Then, according to the size of each cavity 101, baffle slots can be provided at positions corresponding to the baffles on the lower surface of the cavity cover 103. Except for the baffle slots, a certain thickness can be set according to the depth of the cavity 101 to fill the cavity 101. When the cavity cover 103 is installed on the universal wheel support 10, the baffle slots can be aligned with the baffles of the cavity 101 to facilitate installation, and the multiple cavities 101 can be sealed as a whole.

[0046] like Figure 1 As shown, among the multiple cavities 101 on the universal wheel support 10, a universal wheel 20 is installed under one cavity 101, and the cavity 101 can be used as a universal wheel accommodating cavity 1011. Figure 1 As shown, the bottom surface of the universal wheel accommodating cavity 1011 where the universal wheel 20 is located is upwardly protruded to form a universal wheel mounting portion 102, and the universal wheel 20 can be installed in the universal wheel mounting portion 102. Figure 1 , Figure 2As shown, under normal circumstances, the universal wheel mounting portion 102 is higher than the bottom surface of other cavities 101, and may even be higher than the upper surface of the universal wheel support 10. If an integral, all-inclusive cavity cover 103 is used, it cannot be guaranteed that the upper surface of the cavity cover 103 is in the same plane, or the height of the cavity cover 103 needs to be increased to cover the universal wheel mounting portion 102, which increases the difficulty of processing and affects the overall appearance of the universal wheel assembly.

[0047] like Figure 4 As shown, in some embodiments of the present specification, a mounting notch can be provided on the cavity cover 103, and the mounting notch matches the shape and size of the universal wheel mounting portion 102, and is provided above the universal wheel mounting portion 102. In this way, when the cavity cover 103 is installed on the universal wheel support 10, the mounting notch of the cavity cover 103 can be aligned with the universal wheel mounting portion 102, which not only facilitates installation, but also avoids increasing the difficulty of processing the cavity cover 103 due to the different height shapes at the universal wheel mounting portion 102.

[0048] When there are multiple cavities 101 on the universal wheel support 10, and the bottom surface of a universal wheel accommodating cavity 1011 protrudes upward to form a universal wheel mounting portion 102, the universal wheel 20 can be installed in the universal wheel mounting portion 102. Figure 3 As shown, in other embodiments of the present specification, a cavity cover 103 may be provided to cover all cavities 101, and the upper surface of the cavity cover 103 is a plane, and at the same time, a recess may be provided on the bottom surface of the cavity cover 103, and the position of the recess may correspond to the universal wheel mounting portion 102, and may be used to avoid the universal wheel mounting portion 102. In this way, even if the height of the universal wheel mounting portion 102 is higher than the bottom surface of other cavities 101, the cavity cover 103 may cover and seal all cavities 101 including the universal wheel mounting portion 102, so as not to affect the appearance of the universal wheel assembly.

[0049] In addition, if Figure 1 As shown, when there are multiple cavities 101 on the universal wheel support 10, baffles 1012 are provided between each cavity 101 to increase the stability of the structure. In this scenario, when a cavity cover 103 is provided to seal and fill all cavities 101, baffle slots can be provided on the bottom surface of the cavity cover 103, and the baffle slots match the baffles 1012, that is, the number, position, size and shape of the baffle slots can be set according to the number, position, size and shape of the baffles 1012 between each cavity 101. Figure 1Three baffles 1012 are arranged between the three cavities 101, so three baffle slots can be respectively arranged at the positions corresponding to the baffles 1012 on the bottom surface of the cavity cover 103, and the shape and size of each baffle slot can match the corresponding baffle 1012. In this way, when the cavity cover 103 is installed on the universal wheel support 10, the baffle slot can be aligned with the corresponding baffle 1012, so that the cavity cover 103 can better seal and fill each cavity 101, and it is convenient to install at the same time.

[0050] like Figure 5 , Figure 6 As shown, in some embodiments of the present specification, if there are multiple cavities 101 on the universal wheel support 10, a cavity cover 103 can be separately provided for each cavity 101, and each cavity cover 103 is provided above the corresponding cavity 101, and the shape and size of each cavity cover 103 match the corresponding cavity 101, such as: according to the shape and depth of the corresponding cavity 101, the shape and thickness of the corresponding cavity cover 103 are set, so as to achieve the purpose of filling and sealing each cavity 101 separately, thereby reducing the amplitude of the shell when the universal wheel assembly collides and reducing the impact sound.

[0051] Referring to the above-mentioned embodiment, among the multiple cavities 101 on the universal wheel support 10, a universal wheel 20 is installed below one cavity 101, and the cavity 101 can be used as a universal wheel accommodating cavity 1011. The bottom surface of the universal wheel accommodating cavity 1011 protrudes upward to form a universal wheel mounting portion 102, and the universal wheel 20 can be installed in the universal wheel mounting portion 102. Usually, the universal wheel mounting portion 102 is higher than the bottom surfaces of other cavities 101, and even higher than the upper surface of the universal wheel support 10.

[0052] Preferably, in some embodiments, Figure 6 As shown, a cavity cover 103 is disposed above each cavity 101 on the universal wheel support 10, and a mounting notch can be disposed on the cavity cover 103 corresponding to the cavity 101 (i.e., the universal wheel accommodating cavity 1011) where the universal wheel mounting portion 102 is located. The mounting notch matches the shape and size of the universal wheel mounting portion 102 and is used to avoid the universal wheel mounting portion 102. In this way, the cavity cover 103 corresponding to the universal wheel accommodating cavity 1011 can seal the portion of the universal wheel accommodating cavity 1011 except the universal wheel mounting portion 102, and keep the upper surface of the cavity cover 103 on the other cavities 101 on the same plane, without affecting the appearance of the universal wheel assembly. The shape and size of other cavity covers 103 can match the corresponding cavity 101, and the embodiments of this specification do not make specific limitations.

[0053] like Figure 5As shown, a plurality of cavity covers 103 may be provided on the universal wheel support 10, and the plurality of cavity covers 103 may cover the cavity 101, and the upper surfaces of the plurality of cavity covers 103 are flush. When the bottom surface of the universal wheel accommodating cavity 1011 protrudes upward to form a universal wheel mounting portion 102, the universal wheel mounting portion 102 is generally higher than the bottom surfaces of other cavities 101, which will cause the upper surfaces of the various cavities 101 to not be in the same plane. In some embodiments of the present specification, a recess may be provided on the lower surface of the cavity cover 103 corresponding to the universal wheel accommodating cavity 1011, and the position of the recess may correspond to the universal wheel mounting portion 102, so that the cavity cover 103 corresponding to the universal wheel accommodating cavity 1011 may avoid the universal wheel mounting portion 102 through the recess. Compared to Figure 6 In the example shown, Figure 5 The cavity cover 103 corresponding to the universal wheel accommodating cavity 1011 can not only cover and seal the universal wheel accommodating cavity 1011, but also its upper surface can be flush with the upper surface of other cavity covers 103, so that the overall appearance of the universal wheel assembly is relatively neat and does not affect the beauty of the universal wheel assembly. The shape and size of other cavity covers 103 can match the corresponding cavity 101, and the embodiments of this specification do not make specific limitations.

[0054] The present specification also provides a cleaning device, which may be a smart sweeper, a smart mop, etc. The cleaning device includes a device body, which is generally approximately circular in shape, but may also have other shapes. Figure 7 As shown, the universal wheel assembly 40 is usually installed at the bottom of the equipment body of the cleaning equipment 50, and is used to support the cleaning equipment 50 and adjust the direction of the cleaning equipment 50 during its movement. Figure 1-Figure 6 As shown, the universal wheel assembly may also be provided with a rotating shaft 30 , and the rotating shaft 30 may be provided with relevant connecting parts, and the universal wheel assembly is installed at the bottom of the equipment body of the cleaning equipment through the rotating shaft 30 .

[0055] Obviously, the embodiments described above are only embodiments of a part of the embodiments of this specification, rather than all embodiments. Based on the embodiments in the embodiments of this specification, ordinary technicians in this field can make other different forms of changes or modifications without making creative work, which should all fall within the scope of protection of the embodiments of this specification.

[0056] Those skilled in the art will readily come to other implementations of the embodiments of this specification after considering the specification and practicing the utility model disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the embodiments of this specification, which follow the general principles of the embodiments of this specification and include common knowledge or customary technical means in the art that are not disclosed in the embodiments of this specification. The description and embodiments are to be considered merely as exemplary, and the true scope and spirit of the embodiments of this specification are indicated by the following claims.

[0057] It should be understood that the embodiments of the present specification are not limited to the precise structures described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present specification is limited only by the appended claims.

Claims

1. A universal wheel assembly, It is characterized in that include: Universal wheel support (10); A universal wheel (20), the universal wheel (20) being accommodated in the universal wheel support (10) and rotatable around a universal wheel shaft (201); Wherein, a cavity covering piece (103) is provided on the upper surface of the universal wheel support (10), and the cavity covering piece (103) is used to seal the cavity (101) on the upper surface of the universal wheel support (10).

2. The universal wheel assembly according to claim 1, It is characterized in that The number of cavities (101) on the upper surface of the universal wheel support (10) is multiple, the number of the cavity covering member (103) is one, and the cavity covering member (103) is arranged on the top of the multiple cavities (101).

3. The universal wheel assembly according to claim 1, It is characterized in that There are a plurality of cavities (101) on the upper surface of the universal wheel support (10), and a cavity cover (103) is disposed above each cavity (101). Each cavity cover (103) matches the shape and size of the corresponding cavity (101).

4. The universal wheel assembly according to claim 2 or 3, It is characterized in that The plurality of cavities (101) include a universal wheel accommodating cavity (1011), the bottom surface of the universal wheel accommodating cavity (1011) protrudes upward to form a universal wheel mounting portion (102), and the universal wheel (20) is mounted in the universal wheel mounting portion (102); The cavity cover (103) is provided with a mounting notch, the mounting notch corresponding to the universal wheel mounting portion (102) and used to avoid the universal wheel mounting portion (102).

5. The universal wheel assembly according to claim 2 or 3, It is characterized in that The plurality of cavities (101) include a universal wheel accommodating cavity (1011), the bottom surface of the universal wheel accommodating cavity (1011) protrudes upward to form a universal wheel mounting portion (102), and the universal wheel (20) is mounted in the universal wheel mounting portion (102); The bottom surface of the cavity cover (103) is provided with a recessed portion, which corresponds to the universal wheel mounting portion (102) and is used to avoid the universal wheel mounting portion (102).

6. The universal wheel assembly according to claim 2, It is characterized in that Baffles (1012) are provided between the plurality of cavities (101), and a baffle slot is provided on the bottom surface of the cavity cover (103), wherein the baffle slot matches the baffle (1012).

7. The universal wheel assembly according to claim 1, It is characterized in that The connection method between the cavity cover (103) and the universal wheel support (10) is any one of adhesive connection, interference connection, secondary molding connection, screw connection, and clamping connection.

8. The universal wheel assembly according to claim 1, It is characterized in that The cavity cover (103) is configured as a thermoplastic elastomer.

9. The universal wheel assembly according to claim 1, It is characterized in that The thickness of the cavity covering member (103) matches the depth of the cavity (101) and is used to fill the interior of the cavity (101).

10. A cleaning device, It is characterized in that The cleaning device comprises the universal wheel assembly according to any one of claims 1 to 9, and the universal wheel assembly is arranged at the bottom of the cleaning device.

Images