Power apparatus and floor cleaning device

Abstract

A power apparatus (100), comprising a housing (10), motors (20), and an elastic connecting member (30), wherein the motors (20) are spaced apart in the housing (10), the elastic connecting member (30) is arranged between the housing (10) and the motors (20), and the motors (20) are spaced apart from the housing (10) by means of the elastic connecting member (30). Also provided is a floor cleaning device.

Description

Power plant and floor cleaning equipment

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202311811343.1 filed with the State Intellectual Property Office of China on December 26, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of cleaning equipment, and more specifically, to a power device and floor cleaning equipment. Background Art

[0004] In recent years, floor cleaning devices like vacuum cleaners have become a common household cleaning tool. Driven by a motor, the impeller creates a pressure differential inside the device, drawing dust and dirt into the dust bin along with the air. However, due to current limitations in motor dynamic balancing, fundamental frequency noise is difficult to avoid. Furthermore, due to the limitations of machining accuracy, it's difficult to ensure that the dual bearings are perfectly concentric or that the impeller's rotating plane is perfectly perpendicular to the shaft, making it difficult to effectively suppress the motor's second harmonic frequency noise.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a power device and a floor cleaning device having the same.

[0007] A power device according to an embodiment of the present application includes:

[0008] case;

[0009] a motor, the motor being spaced apart and arranged in the housing;

[0010] An elastic connecting member is arranged between the housing and the motor, and the motor is spaced apart from the housing via the elastic connecting member.

[0011] In some embodiments, the elastic connector includes a first elastic connector and a second elastic connector located at opposite ends of the motor, and the motor is connected to the housing via the first elastic connector and the second elastic connector, respectively.

[0012] In some embodiments, the housing further comprises:

[0013] A perforated cover is sleeved on the outer periphery of the motor.

[0014] In some embodiments, the perforated shield includes an inner perforated shield and an outer perforated shield that are nested.

[0015] In some embodiments, the inner perforated cover includes a cover body and a fixing plate arranged on the outer wall of the cover body, a first supporting portion is provided at the connection between the cover body and the fixing plate, the first supporting portion has a supporting surface, the supporting surface abuts against the inner wall surface of the outer perforated cover, and a second supporting portion is provided at one end of the outer perforated cover away from the first supporting portion, the second supporting portion abuts against the outer wall surface of the cover body, so that the inner perforated cover and the outer perforated cover are spaced apart.

[0016] In some embodiments, a limiting protrusion is provided on the first supporting portion, and the outer perforated cover includes a limiting groove, and the limiting protrusion cooperates with the limiting groove.

[0017] In some embodiments, the elastic connector further comprises:

[0018] A third elastic connecting piece is sleeved on the perforated cover and elastically abuts against the shell.

[0019] In some embodiments, the third elastic connector includes a sealing portion and an embedding portion, the sealing portion is covered on the shell to seal the shell, and the embedding portion is embedded in the shell from the sealing portion.

[0020] In some embodiments, the first elastic connector includes:

[0021] an elastic connecting portion;

[0022] The bracket is detachably connected to the elastic connecting portion, and the elastic connecting portion is connected to the motor through the bracket.

[0023] In some embodiments, the bracket includes a buckle, the motor is formed with an escape space, and the buckle cooperates with the escape space to limit the first elastic connector.

[0024] In some embodiments, the motor includes a motor body and a motor cover provided on the motor body, and the second elastic connecting member is at least partially embedded in the motor cover and connected to the housing.

[0025] A floor cleaning device according to another embodiment of the present application includes a power device as claimed in any one of the above claims.

[0026] The embodiment of the present application proposes a power device and a floor cleaning device with the device, in which the motor and the shell are separated by an elastic connecting piece made of elastic material. The motor and the shell cannot contact each other, and the vibration generated by the motor can only be transmitted to the shell through the elastic connecting piece. However, since the elastic connecting piece is made of elastic material and has a certain absorption effect on vibration, only a very small part of the vibration of the motor can be transmitted through the shell, thereby effectively reducing the noise generated by the motor. In addition, since the motor and the shell cannot directly contact each other, the gap between the shell and the motor forms a sound-absorbing zone, which further avoids the spread of noise generated by the motor and effectively improves the user experience.

[0027] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] FIG1 is a schematic diagram of the internal structure of a power device according to an embodiment of the present application;

[0030] FIG2 is a schematic structural diagram of a perforated cover according to an embodiment of the present application;

[0031] FIG3 is a schematic structural diagram of a first elastic connector and a bracket according to an embodiment of the present application;

[0032] FIG4 is a schematic structural diagram of the motor cover, the second elastic connector, and the module back cover according to an embodiment of the present application.

[0033] : Description of the main component symbols: power device 100, shell 10, inner perforated cover 11, first clamping portion 111, limiting protrusion 112, fixing plate 113, cover body 114, first supporting portion 115, outer perforated cover 12, second clamping portion 121, limiting groove 122, second supporting portion 123, module back cover 13, second mounting hole 131, motor 20, motor cover 21, first mounting hole 211, elastic connector 30, first elastic connector 31, bracket 311, mounting portion 3111, buckle 3112, elastic connector 312, ear hole 3121, second elastic connector 32, first limiting boss 321, second limiting boss 322, third elastic connector 33, sealing portion 331, embedded portion 332. DETAILED DESCRIPTION

[0034] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. The same or similar reference numerals in the accompanying drawings represent the same or similar elements or elements with the same or similar functions.

[0035] In addition, the embodiments of the present application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and should not be understood as limiting the present application.

[0036] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] Motor noise includes vibration noise at the fundamental frequency, second harmonic frequency, and aerodynamic noise caused by high-speed airflow. Due to the current limitations of motor dynamic balancing, fundamental frequency noise is difficult to avoid. Furthermore, due to the influence of machining accuracy, it is difficult to ensure that the dual bearings are completely concentric or that the rotating plane of the impeller is completely perpendicular to the shaft, resulting in the inability to effectively suppress the second harmonic frequency noise of the motor.

[0038] Conventional technology typically uses a vibration isolation pad between the motor and the entire machine to reduce vibration noise. While this approach is simple, it still struggles to effectively reduce both fundamental and second harmonic noise under certain operating conditions. This is especially true for products with thin housings, where vibration noise can directly impact the user experience.

[0039] In view of this, referring to FIG. 1 to FIG. 4 , the present application discloses a floor cleaning device, which includes a power device 100 , and the power device 100 includes a housing 10 , a motor 20 and an elastic connector 30 .

[0040] The motor 20 is spaced apart in the housing 10 , and the elastic connector 30 is disposed between the housing 10 and the motor 20 . The motor 20 is spaced apart from the housing 10 via the elastic connector 30 .

[0041] The power device 100 proposed in the embodiment of the present application and the vacuum cleaner with the device are arranged to separate the motor 20 and the shell 10 by an elastic connecting member 30 made of elastic material. The motor 20 and the shell 10 cannot contact each other, and the vibration generated by the motor 20 can only be transmitted to the shell 10 through the elastic connecting member 30. However, since the elastic connecting member 30 is made of elastic material and has a certain absorption effect on vibration, only a very small part of the vibration of the motor 20 can be transmitted through the shell 10, thereby effectively reducing the noise generated by the motor 20. In addition, since the motor 20 and the shell 10 cannot directly contact each other, the gap between the shell 10 and the motor 20 forms a sound-absorbing zone, which further avoids the spread of noise generated by the motor 20 and effectively improves the user experience.

[0042] The floor cleaning equipment of this embodiment includes but is not limited to a floor scrubber, a vacuum cleaner, etc., and the following description will only take the vacuum cleaner as an example.

[0043] The elastic connector 30 includes a first elastic connector 31 and a second elastic connector 32 located at opposite ends of the motor 20 . The motor 20 is connected to the housing 10 via the first elastic connector 31 and the second elastic connector 32 , respectively.

[0044] The shell 10 can be separately arranged inside the vacuum cleaner for installing the motor 20, or it can be part of the outer shell of the vacuum cleaner body. The shell 10 forms a accommodating space. The motor 20 is the core component of the power device 100. The motor 20 is arranged at intervals inside the accommodating space formed by the shell 10 and is connected to the shell 10 through an elastic connector 30 to form a negative pressure inside the vacuum cleaner to suck in dust and the like. Among them, the elastic connector 30 includes a first elastic connector 31 and a second elastic connector 32. The first elastic connector 31 and the second elastic connector 32 are both made of elastic material, which can be rubber, silicone, polyurethane, etc. For example, in this embodiment, the material of the first elastic connector 31 and the second elastic connector 32 can be rubber. The first elastic connector 31 can serve as a vibration isolation base for the motor 20 and is installed at one end of the motor 20. The second elastic connector 32 is a columnar connector and is installed at the other end of the motor 20. The first elastic connector 31 and the second elastic connector 32 are respectively connected to the two side walls of the housing 10, so that the motor 20 is suspended in the space formed by the housing 10. In this way, the vibration generated by the motor 20 can only be transmitted to the housing 10 through the air or the elastic connectors 30 at both ends. Since the first elastic connector 31 and the second elastic connector 32 themselves are elastic, they can form a flexible connection between the motor 20 and the housing 10 after being connected to the motor 20 and the housing 10. The flexible connection can absorb most of the vibration generated by the motor 20, so that the vibration cannot be transmitted to the housing 10, thereby effectively suppressing the noise generated by the motor 20.

[0045] Referring to Figures 1 and 2, in some embodiments, the housing 10 further includes a perforated cover, which is sleeved around the outer periphery of the motor 20. The perforated cover includes an inner perforated cover 11 and an outer perforated cover 12 that are nested together, with the inner perforated cover 11 being located within the outer perforated cover 12. Specifically, both the inner perforated cover 11 and the outer perforated cover 12 are provided with a plurality of heat dissipation holes.

[0046] The inner perforated cover 11 includes a cover body 114 and a fixing plate 113 disposed on the outer wall of the cover body 114. A first support portion 115 is provided at the connection between the cover body 114 and the fixing plate 113. The first support portion 115 has a support surface that abuts against the inner wall of the outer perforated cover. A second support portion 123 is provided at one end of the outer perforated cover 12 away from the first support portion 115. The second support portion 123 abuts against the outer wall of the cover body 114, so that the inner perforated cover 11 and the outer perforated cover 12 are spaced apart. Specifically, the fixing plate 113 is disposed at the opening of the housing 10. The spaced apart arrangement of the inner perforated cover 11 and the outer perforated cover 12 can form a sound-absorbing zone between the inner perforated cover 11 and the outer perforated cover 12, which is beneficial for suppressing the propagation of noise generated by the motor 20. At the same time, the inner perforated cover 11 and the outer perforated cover 12 also provide a certain degree of protection for the motor 20.

[0047] In some embodiments, the inner perforated cover 11 and the outer perforated cover 12 are detachably connected. Optionally, the connection between the inner perforated cover 11 and the outer perforated cover 12 can be a snap connection, a mortise and tenon connection, a threaded connection, etc. The specific connection method is not limited. For example, referring to Figures 1 and 2, in this embodiment, the connection between the inner perforated cover 11 and the outer perforated cover 12 is a snap connection, wherein a first snap connection portion 111 is provided on the outer surface of the inner perforated cover 11, and the number of the first snap connection portions 111 is multiple, and the multiple first snap connection portions 111 are uniformly arranged on the surface of the inner perforated cover 11 along the circumferential direction. A guide surface for facilitating locking is also provided on the top of the first snap connection portion 111, and a guide surface for facilitating locking is provided on the outer perforated cover 12. A second clamping portion 121 is provided which can cooperate with the first clamping portion 111. The second clamping portion 121 can be arranged in a one-to-one correspondence with the first clamping portion 111. A second clamping portion 121 connected end to end is also provided along the circumferential direction for ease of processing. When the outer perforated cover 12 is sleeved on the inner perforated cover 11 along the length direction of the inner perforated cover 11, the guide surface of the first clamping portion 111 will guide and lift the second clamping portion 121. When the outer perforated cover 12 is installed in place, the second clamping portion 121 will fall back and abut against the other side of the first clamping portion 111 where no guide surface is provided, so that the outer perforated cover 12 cannot be easily removed. Such an arrangement can facilitate the maintenance and replacement of the inner perforated cover 11, the outer perforated cover 12 and the motor 20, reducing the difficulty and cost of maintenance. In other embodiments, the first clamping portion 111 can also be provided on the outer perforated cover 12, and the second clamping portion 121 should be provided on the inner perforated cover 11.

[0048] In some embodiments, a limiting protrusion 112 is provided on the first supporting portion 115 , and the outer perforated cover 12 includes a limiting groove 122 , and the limiting protrusion 112 and the limiting groove 122 cooperate with each other.

[0049] Specifically, a limiting groove 122 is provided at the edge of one side of the outer perforated cover 12 away from the card slot. In this embodiment, the number of the limiting grooves 122 is multiple, and the multiple limiting grooves 122 are evenly arranged along the edge of the outer perforated cover 12. Correspondingly, a limiting protrusion 112 is provided on the inner perforated cover 11 to cooperate with the limiting groove 122. The limiting protrusion 112 is arranged at the root of the fixing plate 113. The limiting protrusion 112 is used to cooperate with the limiting groove 122 and can also improve the strength of the fixing plate 113, thereby avoiding the fixing plate 113 from being stuck. 13 breaks, the limiting protrusions 112 and the limiting grooves 122 are the same in number, and the limiting protrusions 112 and the limiting grooves 122 are arranged in a one-to-one correspondence. To facilitate the cooperation between the limiting protrusions 112 and the limiting grooves 122, a guide groove is further provided at the opening of the limiting grooves 122. This arrangement can prevent the inner perforated cover 11 and the outer perforated cover 12 from rotating relative to each other due to factors such as vibration after installation, causing wear or damage to the inner perforated cover 11 or the outer perforated cover 12, or even causing the outer perforated cover 12 to fall off. In other embodiments, the limiting grooves 122 can also be provided on the inner perforated cover 11, in which case the limiting protrusions 112 should be provided on the outer perforated cover 12.

[0050] Referring to Figure 1 , in some embodiments, the elastic connector 30 further includes a third elastic connector 33, which is sleeved onto the perforated cover and elastically abuts against the housing 10. Specifically, the third elastic connector 33 is a shock-isolating sleeve that is sleeved onto the fixing plate 113 of the inner perforated cover 11. The third elastic connector 33 is used to secure the perforated cover. Furthermore, due to the elasticity of the third elastic connector 33, a flexible connection is formed between the perforated cover and the housing 10, further reducing the propagation of noise generated by the motor 20.

[0051] In certain embodiments, the third elastic connector 33 includes a sealing portion 331 and an embedding portion 332. The sealing portion 331 has an internal receiving groove. The sealing portion 331 is sleeved on the fixing plate 113 so that the fixing plate 113 is embedded in the receiving groove. The sealing portion 331 is covered on the housing 10 to seal the housing 10, and the embedding portion 332 is embedded into the housing 10 from the sealing portion 331. Specifically, the sealing portion 331 covers the fixing plate 113 and abuts against the end opening of the housing 10 to form a seal. The embedding portion 332 is disposed deep into the interior of the housing 10. Preferably, the side of the embedding portion 332 abuts against the inner surface of the housing 10. This configuration can form a seal inside the housing 10, further reducing the noise generated by the motor 20.

[0052] Referring to Figures 1 and 3, in certain embodiments, the first elastic connector includes an elastic connector portion 312 and a bracket 311. The first elastic connector portion 312 is detachably connected to the elastic connector portion 312, and the elastic connector portion 312 is connected to the motor 20 via the bracket 311. Specifically, the bracket 311 is provided with a mounting portion 3111, and the elastic connector portion 312 is detachably mounted within the mounting portion 3111. This arrangement facilitates maintenance and replacement of the elastic connector portion 312 and the bracket 311, reducing maintenance difficulty and cost.

[0053] In certain embodiments, the bracket 311 includes a buckle 3112, and the motor 20 is formed with an escape space. The buckle 3112 cooperates with the escape space to limit the first elastic connector 31. Specifically, the elastic connector 312 is provided with an ear hole 3121, through which the buckle 3112 passes and is removably connected to the motor 20. The motor 20 is provided with an escape groove, and the buckle 3112 is partially located within the escape groove. This arrangement can fix the motor 20 and prevent it from rotating after startup, facilitating the installation of the first elastic connector 31 on the housing 10. The motor 20 is provided with a slot that cooperates with the buckle 3112. In this embodiment, the motor 20 is provided with a diffuser, and the buckle 3112 is buckled onto the edge of the diffuser.

[0054] Referring to FIG. 1 and FIG. 4 , in some embodiments, the motor 20 includes a motor body and a motor cover 21 covering the motor body. The second elastic connector 32 is at least partially embedded in the motor cover 21 and connected to the housing 10 . Specifically, a limiting structure is provided at each end of the second elastic connecting member 32, and the limiting structure includes a first limiting boss 321 and a second limiting boss 322. A fixing groove is formed between the first limiting boss 321 and the second limiting boss 322. A first mounting hole 211 is provided on the motor cover 21. The second elastic connecting member 32 inserts the limiting structure at one end into the first mounting hole 211 so that the motor cover 21 is clamped in the fixing groove. The upper cover of the inner perforated cover 11 is provided with a module back cover 13, and the module back cover 13 is provided with a second mounting hole 131. The second elastic connecting member 32 inserts the limiting structure at the other end into the second mounting hole 131 to realize the connection between the motor 20 and the housing 10. A guiding slope is also provided on the side of the first limiting boss 321 away from the second limiting boss 322 to facilitate the insertion of the limiting structure. Such a setting makes the connection between the second elastic connecting member 32 and the motor 20 simple and reliable, and easy to process and install.

[0055] In some embodiments, the second elastic connector 32 may be provided in multiple numbers. Specifically, in this embodiment, the second elastic connector 32 is provided in three numbers. The motor cover 21 is circular, and the three second elastic connectors 32 are evenly arranged around the center of the motor cover 21. This arrangement provides a more uniform support force on the motor 20 and absorbs vibrations generated by the motor 20 from more directions, thereby reducing noise generated by the motor 20.

[0056] In some embodiments, the elastic connection portion 312, the second elastic connection member 32 and the third elastic connection member 33 are all an integral structure formed by integrally processing rubber. In other embodiments, the elastic connection portion 312, the second elastic connection member 32 and the third elastic connection member 33 can also be selected from other elastic materials.

[0057] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two or three, unless otherwise specifically defined.

[0059] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A power device, wherein, Comprising: A housing; A motor, which is arranged inside the housing; An elastic connecting member, which is arranged between the housing and the motor, and the motor is spaced from the housing through the elastic connecting member.

2. The power device according to claim 1, wherein, The elastic connecting member includes a first elastic connecting member and a second elastic connecting member located at opposite ends of the motor, and the motor is connected to the housing through the first elastic connecting member and the second elastic connecting member respectively.

3. The power device according to claim 1, wherein, The housing further includes: A perforated cover, which is sleeved on the outer periphery of the motor.

4. The power device according to claim 3, wherein, The perforated cover includes an inner perforated cover and an outer perforated cover which are nested.

5. The power device according to claim 4, wherein, The inner perforated cover includes a cover body and a fixing plate arranged on the outer wall of the cover body. A first supporting portion is provided at the connection between the cover body and the fixing plate. The first supporting portion has a supporting surface, and the supporting surface abuts against the inner wall surface of the outer perforated cover. A second supporting portion is provided at one end of the outer perforated cover away from the first supporting portion, and the second supporting portion abuts against the outer wall surface of the cover body, so that the inner perforated cover and the outer perforated cover are spaced apart.

6. The power device according to claim 5, wherein, A limiting protrusion is provided on the first supporting portion, and the outer perforated cover includes a limiting groove, and the limiting protrusion and the limiting groove cooperate with each other.

7. The power device according to claim 3, wherein, The elastic connecting member further includes: A third elastic connecting member, which is sleeved on the perforated cover and elastically abuts against the housing.

8. The power device according to claim 7, wherein, The third elastic connecting member includes a sealing portion and an embedding portion. The sealing portion covers the housing to seal the housing, and the embedding portion is embedded into the housing from the sealing portion.

9. The power unit according to claim 2, wherein, The first elastic connecting member includes: An elastic connecting portion; A bracket, which is detachably connected to the elastic connecting portion, and the elastic connecting portion is connected to the motor through the bracket.

10. The power device according to claim 9, wherein, The bracket includes a buckle, and an avoidance space is formed on the motor. The buckle cooperates with the avoidance space to limit the first elastic connecting member.

11. The power device according to claim 2, wherein, The motor includes a motor body and a motor cover covering the motor body. At least part of the second elastic connecting member is embedded in the motor cover and connected to the housing.

12. A floor cleaning device, wherein, A power device according to any one of claims 1-11.

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