Power device and ground cleaning equipment

Abstract

The utility model discloses a power device and ground cleaning equipment, the power device comprises a shell, motors and elastic connecting pieces, the motors are arranged in the shell at intervals, the elastic connecting pieces are arranged between the shell and the motors, and the motors and the shell are arranged at intervals through the elastic connecting pieces. According to the power device and the floor cleaning equipment with the power device, the motor and the shell are arranged in a spaced mode through the elastic connecting piece made of the elastic material, the motor cannot make contact with the shell, and therefore only a small part of vibration of the motor can be transmitted out through the shell, and noise generated by the motor is effectively reduced; in addition, as the motor and the shell cannot be in direct contact, the gap between the shell and the motor forms a noise reduction area, transmission of noise generated by the motor is further avoided, and the use experience of a user is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and more specifically, to a power device and ground cleaning equipment. Background Art

[0002] In recent years, floor cleaning equipment such as vacuum cleaners have become a common daily cleaning tool for today's families. The impeller of the vacuum cleaner, driven by the motor, forms a pressure difference inside the device, so that dust and dirt are sucked into the dust cylinder with the air. However, due to the current limitations of the process level of the dynamic balance correction of the motor, it is difficult to avoid the motor's base frequency noise; at the same time, due to the influence of the processing accuracy, it is difficult to ensure that the double bearings are completely concentric or that the rotating plane of the impeller is completely perpendicular to the rotating shaft, resulting in the motor's double frequency noise cannot be effectively suppressed. Utility Model Content

[0003] Embodiments of the present application provide a power device and a floor cleaning device having the power device.

[0004] A power device according to an embodiment of the present application includes:

[0005] case;

[0006] A motor, wherein the motor is arranged in the housing at intervals;

[0007] An elastic connecting member is arranged between the housing and the motor, and the motor is spaced apart from the housing through the elastic connecting member.

[0008] 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 through the first elastic connector and the second elastic connector, respectively.

[0009] In some embodiments, the housing further comprises:

[0010] A perforated cover is sleeved on the outer circumference of the motor.

[0011] In some embodiments, the perforated shield includes an inner perforated shield and an outer perforated shield that are nested.

[0012] 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.

[0013] 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.

[0014] In some embodiments, the elastic connector further comprises:

[0015] A third elastic connecting piece is sleeved on the perforated cover and elastically abuts against the shell.

[0016] In some embodiments, the third elastic connecting member 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.

[0017] In some embodiments, the first elastic connector includes:

[0018] An elastic connection portion;

[0019] The bracket is detachably connected to the elastic connecting part, and the elastic connecting part is connected to the motor through the bracket.

[0020] 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.

[0021] In some embodiments, the motor includes a motor body and a motor cover disposed on the motor body, and the second elastic connecting member is at least partially embedded in the motor cover and connected to the housing.

[0022] A floor cleaning device according to another embodiment of the present application comprises a power device as described in any one of the above claims.

[0023] The embodiments of the present application propose a power device and a floor cleaning device having the device, in which a motor and a shell are spaced apart 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 pieces are all made of elastic material and have 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.

[0024] 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 apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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:

[0026] Figure 1 is a schematic diagram of the internal structure of a power device according to an embodiment of the present application;

[0027] Figure 2 is a schematic structural diagram of a perforated cover according to an embodiment of the present application;

[0028] Figure 3 is a schematic structural diagram of a first elastic connector and a bracket according to an embodiment of the present application;

[0029] Figure 4 It is a schematic structural diagram of the motor cover, the second elastic connector and the module back cover of the implementation mode of the present application.

[0030] 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, embedding portion 332. DETAILED DESCRIPTION

[0031] 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.

[0032] In addition, the embodiments of the present application described below in conjunction with the drawings are exemplary and are only used to explain the embodiments of the present application and should not be construed as limiting the present application.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature 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. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] Motor noise includes vibration noise such as fundamental frequency and double frequency and aerodynamic noise caused by high-speed airflow. Since the dynamic balance correction of the current motor is limited by the process level, the fundamental frequency noise of the motor is difficult to avoid; at the same time, due to the influence of the processing accuracy, it is difficult to ensure whether the double bearings are completely concentric or whether the rotating plane of the impeller is completely perpendicular to the rotating shaft, resulting in the inability to effectively suppress the double frequency noise of the motor.

[0035] In the related art, vibration noise is usually reduced by installing a vibration isolation pad between the motor and the whole machine. This method is simple, but it is still difficult to effectively reduce the baseband noise and the second harmonic noise under some working conditions. Especially for products with a very thin shell, vibration noise will directly affect the user experience.

[0036] In view of this, please refer to Figures 1 to 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 .

[0037] The motor 20 is spaced apart in the housing 10 , the elastic connecting member 30 is disposed between the housing 10 and the motor 20 , and the motor 20 is spaced apart from the housing 10 via the elastic connecting member 30 .

[0038] The power device 100 and the vacuum cleaner having the same proposed in the embodiment of the present application, separate the motor 20 and the shell 10 by an elastic connector 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 connector 30. However, since the elastic connector 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 propagation of the noise generated by the motor 20 and effectively improves the user experience.

[0039] 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.

[0040] 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 through the first elastic connector 31 and the second elastic connector 32 , respectively.

[0041] The shell 10 can be separately arranged inside the vacuum cleaner for installing the motor 20, or it can be a 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 connecting member 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, and the first elastic connector 31 and the second elastic connector 32 are both made of elastic material, and the elastic material 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, and the first elastic connector 31 can be used as a vibration isolation base of 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 shell 10, so that the motor 20 is suspended inside the space formed by the shell 10. In this way, the vibration generated by the motor 20 can only be transmitted to the shell 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, a flexible connection can be formed between the motor 20 and the shell 10 after being connected to the motor 20 and the shell 10. The flexible connection can absorb most of the vibration generated by the motor 20, so that the vibration cannot be transmitted to the shell 10, thereby effectively suppressing the noise generated by the motor 20.

[0042] See also Figure 1 and Figure 2 In some embodiments, the housing 10 further includes a perforated cover, which is sleeved on the outer periphery of the motor 20. The perforated cover includes an inner perforated cover 11 and an outer perforated cover 12 which are nested, and the inner perforated cover 11 is located inside the outer perforated cover 12. Specifically, a plurality of heat dissipation holes are provided on both the inner perforated cover 11 and the outer perforated cover 12.

[0043] 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 disposed at the connection between the cover body 114 and the fixing plate 113. The first support portion 115 has a support surface, and the support surface abuts against the inner wall surface of the outer perforated cover. A second support portion 123 is disposed 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 surface of the cover body 114, so that the inner perforated cover 11 and the outer perforated cover 12 are arranged at intervals. Specifically, the fixing plate 113 is disposed at the opening of the housing 10. The inner perforated cover 11 and the outer perforated cover 12 are arranged at intervals so that a silencing zone is formed between the inner perforated cover 11 and the outer perforated cover 12, which is conducive to 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 have a certain protective effect on the motor 20.

[0044] In some embodiments, the inner perforated cover 11 and the outer perforated cover 12 are detachably connected. Optionally, the inner perforated cover 11 and the outer perforated cover 12 may be connected by a snap-fit ​​connection, a mortise and tenon connection, a threaded connection, etc. The specific connection method is not limited. Figure 1 and Figure 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-fitting portion 111 is provided on the outer surface of the inner perforated cover 11, and the number of the first snap-fitting portions 111 is multiple, and the multiple first snap-fitting portions 111 are uniformly arranged on the surface of the inner perforated cover 11 along the circumferential direction, and a guide surface for facilitating locking is also provided on the top of the first snap-fitting portion 111, and a second snap-fitting portion 121 that can cooperate with the first snap-fitting portion 111 is provided on the outer perforated cover 12, and the second snap-fitting portion 121 It can be arranged one by one with the first clamping part 111, and a second clamping part 121 connected end to end is also arranged along the circumferential direction for easy 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 part 111 will guide and lift the second clamping part 121. When the outer perforated cover 12 is installed in place, the second clamping part 121 will fall back and abut against the other side of the first clamping part 111 where the guide surface is not arranged, 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, and reduce the difficulty and cost of maintenance. In other embodiments, the first clamping part 111 can also be arranged on the outer perforated cover 12, and the second clamping part 121 should be arranged on the inner perforated cover 11.

[0045] 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.

[0046] Specifically, a limiting groove 122 is provided at an 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 cooperating with the limiting groove 122 is provided on the inner perforated cover 11. 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 damaged. 13 is broken, 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 one by one. In order to facilitate the cooperation between the limiting protrusions 112 and the limiting grooves 122, a guide groove is also arranged at the opening of the limiting grooves 122. Such an 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 arranged on the inner perforated cover 11, and in this case, the limiting protrusions 112 should be arranged on the outer perforated cover 12.

[0047] See also Figure 1 In some embodiments, the elastic connector 30 further includes a third elastic connector 33, which is sleeved on the perforated cover and elastically abuts against the housing 10. Specifically, the third elastic connector 33 is a shock-isolating sleeve, which is sleeved on the fixing plate 113 of the inner perforated cover 11, and the third elastic connector 33 is used to fix the perforated cover. At the same time, since the third elastic connector 33 is elastic, a flexible connection is formed between the perforated cover and the housing 10, which is conducive to further weakening the propagation of the noise generated by the motor 20.

[0048] In some embodiments, the third elastic connector 33 includes a sealing portion 331 and an embedding portion 332. The sealing portion 331 is provided with a receiving groove inside. 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. The embedding portion 332 is embedded in 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 deeply arranged toward the inside of the housing 10. Preferably, the side of the embedding portion 332 abuts against the inner surface of the housing 10. In this way, the inside of the housing 10 can be sealed, and the noise generated by the motor 20 can be further reduced.

[0049] See also Figure 1 and Figure 3In some embodiments, the first elastic connector includes an elastic connector 312 and a bracket 311, and the elastic connector 312 is detachably connected, and the elastic connector 312 is connected to the motor 20 through the bracket 311. Specifically, the bracket 311 is provided with a mounting portion 3111, and the elastic connector 312 is detachably mounted in the mounting portion 3111. Such a configuration facilitates the maintenance and replacement of the elastic connector 312 and the bracket 311, and reduces the difficulty and cost of maintenance.

[0050] In some embodiments, the bracket 311 includes a buckle 3112, and the motor 20 is formed with an escape space, and 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, and the buckle 3112 is detachably connected to the motor 20 after passing through the ear hole 3121. The motor 20 is provided with an escape groove, and the buckle 3112 is partially located in the escape groove. Such a configuration can fix the motor 20 to prevent the motor 20 from rotating after starting, and facilitate 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 on the edge of the diffuser.

[0051] See also Figure 1 and Figure 4 In some embodiments, the motor 20 includes a motor body and a motor cover 21 disposed on the motor body, and the second elastic connecting member 32 is at least partially embedded in the motor cover 21 and connected to the housing 10 . Specifically, limiting structures are respectively provided at both ends of the second elastic connecting member 32, and the limiting structures include 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. A module back cover 13 is provided on the inner perforated cover 11, and a second mounting hole 131 is provided on the module back cover 13. 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 inclined surface 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 configuration makes the connection between the second elastic connecting member 32 and the motor 20 simple and reliable, and is convenient for processing and installation.

[0052] In some embodiments, optionally, there are multiple second elastic connectors 32. Specifically, in this embodiment, there are three second elastic connectors 32, the motor cover 21 is circular, and the three second elastic connectors 32 are evenly arranged around the center of the motor cover 21. Such an arrangement can make the support force on the motor 20 more uniform, and can also absorb the vibration generated by the motor 20 from more directions, thereby reducing the noise generated by the motor 20.

[0053] In some embodiments, the elastic connection part 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 part 312, the second elastic connection member 32 and the third elastic connection member 33 can also be selected from other elastic materials.

[0054] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are 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. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0056] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary 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, characterized in that: include: case; A motor, wherein the motor is disposed in the housing; An elastic connecting member is arranged between the housing and the motor, and the motor is spaced apart from the housing through the elastic connecting member; 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 through the first elastic connector and the second elastic connector respectively, so that the motor is suspended inside the space formed by the housing.

2. The power device according to claim 1, characterized in that: The housing further comprises: A perforated cover is sleeved on the outer circumference of the motor.

3. The power device according to claim 2, characterized in that: The perforated cover comprises an inner perforated cover and an outer perforated cover which are nested.

4. The power device according to claim 3, characterized in that: 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.

5. The power device according to claim 4, characterized in that: The first supporting portion is provided with a limiting protrusion, the outer perforated cover includes a limiting groove, and the limiting protrusion cooperates with the limiting groove.

6. The power device according to claim 2, characterized in that: The elastic connecting member also includes: A third elastic connecting piece is sleeved on the perforated cover and elastically abuts against the shell.

7. The power device according to claim 6, characterized in that: The third elastic connecting member 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 into the shell from the sealing portion.

8. The power device according to claim 1, characterized in that: The first elastic connecting member comprises: An elastic connection portion; The bracket is detachably connected to the elastic connecting part, and the elastic connecting part is connected to the motor through the bracket.

9. The power device according to claim 8, characterized in that: The bracket includes a buckle, and the motor is formed with an escape space. The buckle cooperates with the escape space to limit the first elastic connecting member.

10. The power device according to claim 1, characterized in that: The motor comprises a motor body and a motor cover arranged on the motor body, and the second elastic connecting member is at least partially embedded in the motor cover and connected to the housing.

11. A floor cleaning device, characterized in that: A power device comprising any one of claims 1 to 10.

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