Driving device and equipment

Abstract

The present invention belongs to the field of motor technology, and specifically relates to a driving device and equipment. In view of the shortcomings of existing motors that it is difficult to take into account both sealing performance and the accumulation of impurities between the rotor and the stator, the present invention adopts the following technical solution: The present invention adopts the following technical solution: A driving device includes a stator with a first through hole; a rotor including a rotor body and an output shaft, at least a part of the rotor body is located in the first through hole; a first radial gap is provided between the rotor body and the hole wall of the first through hole, the first radial gap surrounds the rotor and passes through the axial direction of the rotor to form a first through flow channel; and at least one rotating mechanism; the fluid passes through the first through flow channel from the orifice on one side of the first through hole and flows out from the orifice on the other side of the first through hole. The beneficial effect of the driving device of the present invention is that impurities are not easy to accumulate and are easy to clean.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a driving device and equipment. Background Art

[0002] Existing inner rotor motors include a housing, a stator housed within the housing, a rotor, an output shaft fixedly connected to the rotor, and bearings supporting the output shaft. The output shaft extends outside the housing and is sealed between the output shaft and the housing. During use, impurities easily accumulate inside the stator of an inner rotor motor. This is particularly true for inner rotor motors used on or underwater surfaces. Due to prolonged immersion in water, impurities in the water can accumulate in gaps between the stator and rotor, making scaling more likely and causing the motor to malfunction. Furthermore, the rotating seal between the output shaft and the housing of the inner rotor motor cannot guarantee sealing performance or lifespan.

[0003] To meet the sealing requirements of special occasions such as on the water surface or underwater, although some types of external rotor motors have emerged, the structure of existing external rotor motors generally includes an outer rotor, a stator, an output shaft connected to the outer rotor, and an end cover. The end cover includes a cylinder, a center hole is opened in the cylinder along the axis of the cylinder, and bearing chambers are opened at both ends of the center hole. Each bearing chamber is equipped with a bearing. The rotating shaft is sequentially passed through the bearings and the center hole. The outer rotor and stator are plastic-sealed separately. However, in order to ensure the mutual rotation between the outer rotor and the stator, there is inevitably a gap, and impurities will inevitably enter the gap between the outer rotor and the stator. Moreover, due to the unreasonable design of the end cover and other parts of the existing external rotor motor, impurities deposited in the gap cannot be discharged in time, resulting in impurity accumulation. In addition, some components in the impurities have oxidative corrosion properties. If the motor is used for a long time, it will inevitably have an adverse effect on the motor and even cause the rotor to get stuck.

[0004] Furthermore, existing motors, whether inner rotor or outer rotor, require a radial gap between the rotor and stator to prevent friction and ensure proper rotation. However, this radial gap is relatively small and closed at both ends. This makes cleaning and maintenance more complex when impurities get between the outer rotor and stator. Summary of the Invention

[0005] In view of the shortcomings of existing motors in that it is difficult to achieve both sealing performance and the prevention of impurity accumulation between the rotor and the stator, the present invention provides a drive device and equipment having the drive device, which ensures the sealing performance while solving the problem that the normal operation of the motor is affected by the accumulation of impurities between the rotor and the stator.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a drive device is provided, which is an inner rotor type drive device, comprising a stator, a coil winding and an encapsulating shell, the coil winding is sealedly arranged in the encapsulating shell, the stator has a first through-hole; a rotor, having axial and radial directions, the rotor comprising a rotor body and an output shaft, at least a portion of the rotor body is located in the first through-hole, one end of the output shaft is connected to the rotor body, and the other end of the output shaft extends in a direction away from the first through-hole; a first radial gap is defined between the rotor body and the hole wall of the first through-hole, the first radial gap surrounds the rotor and penetrates the rotor in the axial direction to form a first through-flow channel; and at least one rotating mechanism is mounted on the end of the output shaft away from the stator; after the fluid passes through the first through-flow channel from the orifice on one side of the first through-hole, it flows out from the orifice on the other side of the first through-hole.

[0007] In one embodiment of the present invention, one output shaft is provided, one end of which is connected to a side surface of the rotor body; or two output shafts are provided, respectively connected to two opposite side surfaces of the rotor body.

[0008] In one embodiment of the present invention, the drive device further includes at least one support assembly, with at least one output shaft rotatably connected to the support assembly. An axial gap is formed between the support assembly and the stator along the axial direction of the rotor to allow the fluid to flow unimpeded from the first through-flow channel. The axial gap is 360°.

[0009] In one embodiment of the present invention, the support assembly includes a shaft seat and at least one bearing, the bearing is arranged in the shaft seat; the output shaft is installed in the bearing; and a pair of retaining springs, the output shaft on which the bearing is installed is provided with corresponding retaining grooves, a pair of retaining springs are arranged on both sides of the shaft seat, and the retaining springs are clamped in the retaining grooves.

[0010] In one embodiment of the present invention, a first connecting portion is formed on the supporting assembly; the packaging shell has a second connecting portion, and the first connecting portion and the second connecting portion are connected to the same mounting member, or the first connecting portion and the second connecting portion are respectively connected to different mounting members.

[0011] The present invention also provides another drive device, which is an external rotor drive device, comprising: a stator, the stator including a coil winding and an encapsulating shell, the coil winding being sealedly arranged in the encapsulating shell; a rotor, having axial and radial directions, and along its axial direction, the rotor having a second through-hole, at least a portion of the stator being located in the second through-hole, a second radial gap being provided between the encapsulating shell and the hole wall of the second through-hole, the second radial gap surrounding the stator and penetrating along the axial direction of the rotor to form a second through-flow channel; and at least one rotating mechanism mounted on the outer circumferential surface of the rotor; wherein the fluid passes through the second through-flow channel from an orifice on one side of the second through-hole and flows out from an orifice on the other side of the second through-hole.

[0012] In one embodiment of the present invention, the driving device further includes at least one supporting assembly, and the rotor is rotatably mounted in the supporting assembly.

[0013] In one embodiment of the present invention, the support assembly includes a shaft seat and at least one bearing, wherein the bearing is disposed in the shaft seat; and the rotor is mounted in the bearing.

[0014] In one embodiment of the present invention, a first connecting portion is formed on the support assembly; the encapsulation shell has a second connecting portion on a side away from the rotor, and the first connecting portion and the second connecting portion are connected to the same mounting member, or the first connecting portion and the second connecting portion are respectively connected to different mounting members.

[0015] The present invention also provides a device suitable for a surface or underwater cleaning robot, which has the aforementioned driving device.

[0016] The drive device of the present invention has the following beneficial effects: the stator includes a coil winding and an encapsulating housing, which seals the coil winding, ensuring the stator is sealed; the radial gap between the rotor and stator forms a flow channel that communicates with the exterior of the drive device. While impurities may enter between the stator and rotor, they are unlikely to accumulate; and the rotor and stator are separate components, making it easy to clean even if impurities accumulate between the stator and rotor. The first throughflow channel communicates with the exterior of the drive device.

[0017] The device of the present invention adopts the driving device of the present invention and has all the beneficial effects of the driving device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the driving device of the first embodiment of the present invention.

[0019] Figure 2 This is a structural exploded view of the stator of Example 1 of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the rotor of embodiment 1 of the present invention.

[0021] Figure 4 It is a structural diagram of the support assembly of embodiment 1 of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the rotating mechanism of embodiment 1 of the present invention.

[0023] Figure 6 4 is a cross-sectional view of the driving device according to the first embodiment of the present invention along the first central axis A.

[0024] Figure 7 This is a schematic diagram of a device with a driving device according to a first embodiment of the present invention, mainly showing how the driving device is installed on the device.

[0025] Figure 8 yes Figure 7 Magnified view of section H.

[0026] Figure 9 4 is a cross-sectional view of the driving device according to the second embodiment of the present invention along the second central axis B.

[0027] Reference numerals:

[0028] 100a, 100b driving device; 200a equipment;

[0029] A. First central axis; B. Second central axis;

[0030] 1a, 1b stator; 11a, 11b coil winding;

[0031] 12a, 12b packaging shell; 121a, 121b second connecting portion;

[0032] 2a, 2b rotors; 21a rotor body;

[0033] 22a output shaft; 23a slot;

[0034] 221a threaded hole; 222a notch;

[0035] 3a first through hole; 3b second through hole;

[0036] 4a first radial gap; 4b second radial gap;

[0037] 6a, 6b rotating mechanism; 61a socket;

[0038] 62a: connecting hole; 7a, 7b: supporting assembly;

[0039] 71a, 71b shaft seats; 72a, 72b bearings;

[0040] 73a circlip; 74a gasket;

[0041] 711a, 711b first connecting portion; 8a axial gap;

[0042] 9a body; 91a top plate;

[0043] 92a side panel. DETAILED DESCRIPTION

[0044] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figure 1 As shown, the first embodiment of the present invention provides a drive device 100a, which is an inner rotor drive device. The drive device 100a includes a stator 1a, a rotor 2a, and at least one rotating mechanism 6a. The rotor 2a is located inside the stator 1a, and the rotating mechanism 6a is connected to the rotor 2a.

[0047] like Figure 2 、 Figure 6 As shown, the stator 1a includes a coil winding 11a and an encapsulating shell 12a, and the coil winding 11a is sealed and arranged in the encapsulating shell 12a. The encapsulating shell 12a is an annular structure, and its annular structure surrounds a through hole. In other words, the stator 1a is assumed to have a first central axis A, and along the direction of the first central axis A, the stator 1a is formed with a first through hole 3a. The center line of the first through hole 3a is on the same straight line as the first axial axis A. In this first embodiment, the coil winding 11a is evenly distributed in the encapsulating shell 12a around the first through hole 3a.

[0048] Of course, the stator 1a also needs to lead the terminals of the coil winding 11a out of the package housing 12a via leads 13a to achieve current conduction. In this embodiment, a through hole or opening can be pre-set in the package housing 12a to allow the lead 13a to be led out through the through hole or opening, and then the through hole or opening can be sealed with potting compound.

[0049] The encapsulating shell 12a in the stator 1a can be made of a plastic material or a rigid material. For example, a plastic material, which has excellent lightweight properties, can be made of a modified polypropylene material. Conventional rigid materials, such as aluminum, can also be used. The surface of the encapsulating shell 12a is as smooth as possible, especially the surface of the first through hole 3a, which is preferably smooth. This prevents sediment from accumulating on the wall of the first through hole 3a.

[0050] like Figure 3 , Figure 6 As shown, the rotor 2a has an axial direction and a radial direction perpendicular to the axial direction. The rotor 2a includes a rotor body 21a and an output shaft 22a. The rotor body 21a is a cylindrical body made of magnetic material, with one end of the output shaft 22a connected to the rotor body 21a. In this first embodiment, the central axis of the rotor body 21a and the central axis of the output shaft 22a are collinear. When the rotor 2a is mounted to the stator 1a, at least a portion of the rotor body 21a is located within the first through-hole 3a. One end of the output shaft 22a is connected to the rotor body 21a, and the other end of the output shaft 22a extends away from the first through-hole 3a. In other words, the central axis of the rotor body 21a and the central axis of the output shaft 22a are collinear with the first through-hole 3a. A first radial gap 4a is defined between the rotor body 21a and the wall of the first through hole 3a. The first radial gap 4a surrounds the rotor 2a and penetrates the rotor 2a in the axial direction to form a first through-flow channel 5a.

[0051] In this embodiment, in order to ensure that the fluid can pass through the first through-flow channel 5a smoothly, the width of the first radial gap 4a should not be too small. At the same time, in order to ensure the operating power of the driving device, the width of the first radial gap 4a should not be too large. Therefore, in actual manufacturing and use, the first radial gap 4a is preferably designed to be 1mm-10mm.

[0052] There may be one or two output shafts 22a. When there is one output shaft 22a, one end of the output shaft 22a is connected to a side surface of the rotor body 21a. When there are two output shafts 22a, the two output shafts 22a are respectively connected to two opposing side surfaces of the rotor body 21a. Two output shafts 22a generally refer to a single output shaft 22a with both ends extending axially outward from the rotor body 21a, thereby providing two output ends. In this first embodiment, there is one output shaft 22a.

[0053] like Figure 6 As shown, the formed first through-flow channel 5a enables fluid to flow from the orifice on one side of the first through-hole 3a through the first through-flow channel 5a and out the orifice on the other side of the first through-hole 3a. During the fluid flow, impurities are removed from the first radial gap 4a, thereby preventing impurities from accumulating in the gap between the stator 1a and the rotor 2a. Even if impurities accumulate on the surface of the first through-hole 3a and the surface of the rotor body 21a after the drive device 100a has been running for a long time, this will not cause impurity accumulation, and cleaning is also convenient. To clean, simply remove the rotor 2a from the stator 1a and use a brush or other tool. Since there are no hard-to-reach blind spots, cleaning is fast and efficient.

[0054] like Figure 1 、 Figure 4 、 Figure 6 As shown, the rotating mechanism 6a is installed on the side of one of the output shafts 22a away from the stator 1a. One or two rotating mechanisms 6a can be provided. When one output shaft 22a is provided, one rotating mechanism 6a is also provided, which is correspondingly installed on the output shaft 22a. Specifically, the rotating mechanism 6a is a blade, which has a slot 61a, and the blade is inserted into the axial end of the output shaft 22a through the slot 61a. In order to enable the blade to be stably fixed to the output shaft 22a, a connecting hole 62a can be opened on the blade, which is connected to the slot 61a, and a threaded hole 221a is formed at the axial end of the output shaft 22a, and a screw passes through the connecting hole 62a and is connected to the threaded hole 221a. In order to prevent the screw from slipping, the part of the output shaft 22a inserted into the slot 61a is the plug-in portion, and a notch 222a is provided on the end side of the plug-in portion. The shape of the slot 61a matches the shape of the plug-in portion. This design can prevent the rotating mechanism 6a and the output shaft 22a from rotating relative to each other.

[0055] During the rotation process, the rotating mechanism 6a can accelerate the flow of the fluid near the driving device 100a. The faster the fluid flows, the easier it is to remove impurities from the first through-flow channel 5a.

[0056] Of course, depending on the actual application scenario, the rotating mechanism 6a can also be other structures, such as rollers, drums, etc. The number of the rotating mechanisms 6a can also be set according to the length and number of the output shafts 22a. For example, when the output shaft 22a is longer, two or more rotating mechanisms 6a can be installed on the same output shaft 22a. When there are two output shafts 22a, at least one rotating mechanism 6a can also be installed on two different output shafts 22a. For example, the rotating mechanism 6a is a drum, and the two drums are mounted on the same rotating shaft and fixed by limiting bolts or limiting sleeves. For textile machinery, the rotating mechanism 6a is a yarn drum, and installing multiple yarn drums on a drive device 100a can improve production efficiency.

[0057] like Figure 5 As shown, at least one output shaft 22a is rotatably connected to the support assembly 7a. Specifically, the support assembly 7a includes a shaft seat 71a, at least one bearing 72a, a pair of retaining springs 73a and a washer 74a.

[0058] like Figure 1 、 Figure 6 As shown, in order to ensure stable operation of the output shaft 22a, in this embodiment 1, two bearings 72a are provided, and the two bearings 72a are coaxially arranged in the shaft seat 71. The output shaft 22a is installed in the bearings 72a. During the operation of the rotor 2a, the provision of two bearings 72a is more stable, less prone to vibration, and less prone to vibration of the rotor 2a. The output shaft 22a with the bearings 72a is provided with corresponding retaining grooves 23a. A pair of retaining springs 73a are provided on both sides of the shaft seat 71a, and the retaining springs 73a are engaged in the retaining grooves 23a. The gasket 74a is provided between the retaining springs 73a and the shaft seat 71a. By providing two retaining springs 73a, the rotor 2a can be prevented from axial movement.

[0059] like Figure 1 、 Figure 6 As shown, in the first embodiment, the support assembly 7a is appropriately arranged away from the stator 1a, that is, along the axial direction of the rotor 2a, an axial gap 8a is formed between the support assembly 7a and the stator 1a, and the axial gap 8a is communicated with the first radial gap 4a. When impurities enter the first radial gap 4a, the fluid can flow out of the first through-flow channel 5a without hindrance, thereby carrying out the impurities.

[0060] In order to enable the drive device 100a to be easily and quickly installed on external equipment. In this embodiment 1, the support assembly 7a is further formed with a first connecting portion 711a. Specifically, the first connecting portion 711a is formed on the outer peripheral surface of the shaft seat 71a; the encapsulating shell 12a is formed with a second connecting portion 121a. The first connecting portion 711a and the second connecting portion 121a can be located on the same side or on different sides. When the two are on the same side, they can be installed on the same mounting member, or of course they can be installed on different mounting members. When the two are not on the same side, they can be installed on different mounting members according to actual conditions. The mounting member and the first connecting portion 711a and the second connecting portion 121a can be fixed by glue, welding, or bolting. Alternatively, a card connector can be formed on the first connecting portion 711a and the second connecting portion 121a, and a slot can be formed on the mounting member, and the card connector can be inserted into the slot. Of course, there are other traditional connection methods, which will not be described in detail.

[0061] like Figure 7 As shown, based on the driving device 100a provided in the first embodiment, the first embodiment further provides a device 200a, which has the driving device 100a. The device 200a can be applied to a surface or underwater cleaning robot, which is used for surface and / or underwater cleaning.

[0062] like Figure 7 、 Figure 8 As shown, specifically, when the device 200a is a cleaning robot, the cleaning robot has a body 9a, the housing 9a having a top plate 91a and side plates 92a connected to the top plate 91a and arranged opposite to each other, and two driving devices 100a are provided, each mounted on a side plate 92a. The first connecting portion 711a and the second connecting portion 121a of each driving device 100a are connected and fixed to the same side plate 92a.

[0063] In the first embodiment, the paddles generate thrust in the water to drive the surface or underwater cleaning robot to move in the water. At the same time, due to the rotation of the paddles, the water flow is accelerated through the through-flow channel 8a, thereby bringing impurities out of the first through-flow channel 5a.

[0064] In other embodiments, the driving device 100a can also be used in textile equipment, for example, in a yarn winding mechanism, that is, as described above, the rotating mechanism 6a can be a drum.

[0065] The main design points of the present invention are the driving device 100a, especially the first flow channel 5a between the stator 1a and the rotor 2a. As for other components or mechanisms of the device 200a, such as the garbage collection device, they are not described in detail.

[0066] Example 2

[0067] like Figure 9 As shown, this second embodiment provides another drive device 100b, which is an outer rotor drive device. The drive device 100b includes a stator 1b, a rotor 2b, and at least one rotating mechanism 6b. The stator 1b is located inside the rotor 2b, and the rotating mechanism 6b is connected to the rotor 2b.

[0068] The stator 1 b includes a coil winding 11 b and an encapsulating shell 12 b . The encapsulating shell 12 b is cylindrical in shape. The coil winding 11 b is sealed inside the encapsulating shell 12 b .

[0069] Of course, the stator 1b also needs to lead the connection terminals of the coil winding 11b out of the packaging shell 12b through leads (not shown) to achieve current conduction. The specific design can refer to the first embodiment.

[0070] The packaging shell 12b in the stator 1b can be made of plastic material or rigid material. For example, the plastic material has good lightweight properties, and its material can be modified polypropylene material. Of course, traditional rigid materials such as aluminum materials can also be selected.

[0071] like Figure 9 As shown, the rotor 2b is an annular structure having an axial direction and a radial direction perpendicular to the axial direction. In the second embodiment, the rotor 2b is an annular magnetic steel. Along the axial direction of the rotor 2b, the rotor 2b has a second through hole 3b. The surface of the annular magnetic steel is as smooth as possible, especially the surface where the hole wall of the second through hole 3b is located is preferably smooth, which can prevent sediment from not easily depositing on the hole wall of the second through hole 3b. At least a part of the stator 1b is located in the second through hole 3b, and a second radial gap 4b is provided between the encapsulating shell 12b and the hole wall of the second through hole 3b. The second radial gap 4b surrounds the stator 2b and passes through the axial direction of the rotor 2b to form a second through-flow channel 5b. It is proposed that the rotor 2b has a second central axis B, and the second central axis B is the same as the axial direction of the rotor 2b. In other words, when the positions of the rotor 2b and the stator 1b are relatively fixed, the central axis of the stator 1b and the second central axis B are on the same straight line.

[0072] like Figure 9As shown, the formed second through-flow channel 5b allows fluid to flow from the orifice on one side of the second through-hole 3b through the second through-flow channel 5b and out the orifice on the other side of the second through-hole 3b. During the fluid flow, impurities are removed from the second radial gap 4b, thereby preventing impurities from accumulating in the gap between the stator 1b and the rotor 2b. Even if impurities accumulate on the surface of the second through-hole 3b and the stator 1b after the drive device 100b has been running for a long time, they can be easily cleaned. To clean, simply remove the rotor 2b from the stator 1b and use a brush or other tool. Since there are no hard-to-reach blind spots during cleaning, cleaning is fast and efficient.

[0073] like Figure 9 As shown, in the second embodiment, in order to ensure that the fluid can pass through the second through-flow channel 5b smoothly, the width of the second radial gap 4b should not be too small. At the same time, in order to ensure the operating power of the driving device 100b, the width of the second radial gap 4b should not be too large. Therefore, in actual manufacturing and use, the second radial gap 4b is preferably designed to be 1mm-10mm.

[0074] like Figure 9 As shown, the rotating mechanism 6b is mounted on the outer circumference of the rotor 2b. One or two rotating mechanisms 6b can be provided. Specifically, the rotating mechanism 6b is a blade having a mounting hole (not shown). The blade is sleeved onto the outer circumference of the rotor 2b through the mounting hole (not shown) and is fixed in place by a retaining member. For example, two corresponding retaining grooves can be provided on the outer circumference of the rotor 2b, one on each side of the blade. A connector is then inserted into the retaining groove to secure the blade.

[0075] Of course, depending on the actual application scenario, the rotating mechanism 6b can also be other structures, such as rollers, drums, etc. The number of the rotating mechanisms 6b can also be set according to the length of the rotor 2b. For example, when the rotor 2b is long, two or more rotating mechanisms 6b can be installed. For example, the rotating mechanism 6b is a drum, and the two drums are mounted on the same rotating shaft and fixed by limiting bolts or limiting sleeves. For textile machinery, the rotating mechanism 6b is a yarn drum, and installing multiple yarn drums on a driving device 100b can improve production efficiency.

[0076] During the rotation process, the rotating mechanism 6b can accelerate the flow of the fluid near the driving device 100b. The faster the fluid flows, the easier it is to remove impurities from the second through-flow channel 5b.

[0077] The rotor 2b is rotatably connected to the support assembly 7b. Specifically, the support assembly 7b includes a shaft seat 71b and at least one bearing 72b. To ensure stable operation of the rotor 2b, in this second embodiment, two bearings 72b are provided, coaxially disposed within the shaft seat 71b. The rotor 2b is mounted within the bearings 72b.

[0078] Of course, in order to prevent the rotor 2b from detaching from the bearing 72b during operation, the second embodiment can also refer to the first embodiment to set a second retaining spring (not shown) and a second retaining groove (not shown), that is, a corresponding second retaining groove is provided on the outer peripheral surface of the rotor 2b, a pair of second retaining springs are provided on both sides of the shaft seat 71b, and the second retaining springs are clamped in the second retaining groove.

[0079] To enable the drive device 100b to be easily and quickly installed on an external device, a corresponding first connection portion 711b may also be formed on the shaft seat 71b of the support assembly 7b of this second embodiment. The encapsulating housing 12b has a second connection portion 121b on the side away from the rotor 2b. The first connection portion 711b and the second connection portion 121b are connected to the same mounting member, or the first connection portion 711b and the second connection portion 121b are connected to different mounting members. The first connection portion 711b and the second connection portion 121b may be located on the same side or on different sides. When the two are on the same side, they can be installed on the same mounting member, or they can be installed on different mounting members. When the two are on different sides, they can be installed on different mounting members according to actual circumstances. The connection method with the external device can refer to the first embodiment and will not be described in detail. When designing the second connection portion 121b, it should avoid affecting the flow of fluid and, therefore, be as far away from the rotor 2b as possible.

[0080] Based on the driving device 100b provided in the second embodiment, the first embodiment further provides a device having the driving device, which can be applied to a surface or underwater cleaning robot, which is used for surface and / or underwater cleaning.

[0081] The structure of the cleaning robot in this embodiment 2 can refer to that in embodiment 1, and the only difference lies in the driving device 100b and the driving device 100a. The connection method between the driving device 100b and the driving device 100a and the external device (such as the body 9a of the cleaning robot) can refer to that in embodiment 1, and will not be described in detail.

[0082] In other embodiments, the driving device 100b can also be used in textile equipment, for example, in a yarn winding mechanism, that is, as described above, the rotating mechanism 6b can be a drum.

[0083] The main design points of the present invention are the driving device 100b, especially the second through-flow channel 5b between the stator 1b and the rotor 2b. As for other components or mechanisms of the device, such as the garbage collection device, they are not described in detail.

[0084] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A driving device, characterized in that: include: A stator comprises a coil winding and an encapsulating shell, wherein the coil winding is sealed and disposed in the encapsulating shell, and the stator has a first through hole; a rotor having an axial direction and a radial direction, the rotor comprising a rotor body and an output shaft, at least a portion of the rotor body being located in the first through-hole, one end of the output shaft being connected to the rotor body, and the other end of the output shaft extending away from the first through-hole; a first radial gap being defined between the rotor body and a wall of the first through-hole, the first radial gap surrounding the rotor and extending axially through the rotor to form a first through-flow channel; and At least one rotating mechanism mounted on an end of the output shaft away from the stator; wherein the rotating mechanism drives the fluid to pass through the first through-flow channel from the orifice on one side of the first through-hole and then flow out from the orifice on the other side of the first through-hole, thereby carrying impurities out of the first through-flow channel; Among them, the rotor and stator are set separately; The first through-flow channel is directly connected to the outside of the driving device.

2. A driving device according to claim 1, characterized in that: The output shaft is provided with one end connected to a side surface of the rotor body; or Two output shafts are provided and are respectively connected to two opposite side surfaces of the rotor body.

3. A driving device according to claim 1, characterized in that: The drive device also includes at least one support assembly, and at least one output shaft is rotatably connected to the support assembly; along the axial direction of the rotor, an axial gap is formed between the support assembly and the stator to allow the fluid to flow out of the first flow channel without obstruction.

4. A driving device according to claim 3, characterized in that: The support assembly includes a shaft seat and at least one bearing, wherein the bearing is disposed in the shaft seat; the output shaft is mounted in the bearing; and A pair of retaining springs are provided on the output shaft on which the bearing is installed, and corresponding retaining grooves are provided. The pair of retaining springs are arranged on both sides of the shaft seat, and the retaining springs are clamped in the retaining grooves.

5. A driving device according to claim 3, characterized in that: A first connecting portion is formed on the supporting assembly, and the packaging shell has a second connecting portion. The first connecting portion and the second connecting portion are connected to the same mounting member, or the first connecting portion and the second connecting portion are respectively connected to different mounting members.

6. A driving device, characterized in that: The driving device comprises: a stator, the stator comprising a coil winding and an encapsulating shell, the coil winding being sealedly disposed in the encapsulating shell; a rotor having an axial direction and a radial direction, the rotor having a second through-hole along the axial direction, the stator being at least partially located in the second through-hole, a second radial gap being defined between the packaging housing and a wall of the second through-hole, the second radial gap surrounding the stator and extending through the rotor in the axial direction to form a second through-flow channel; and At least one rotating mechanism mounted on the outer circumference of the rotor; wherein the rotating mechanism drives the fluid to flow from the orifice on one side of the second through hole through the second through flow channel and then out from the orifice on the other side of the second through hole, thereby carrying impurities out of the first through flow channel; Among them, the rotor and stator are set separately; The first through-flow channel is directly connected to the outside of the driving device.

7. A driving device according to claim 6, characterized in that: The invention also includes at least one supporting assembly, in which the rotor is rotatably mounted.

8. A driving device according to claim 7, characterized in that: The support assembly includes A shaft seat and at least one bearing, wherein the bearing is arranged in the shaft seat; the rotor is installed in the bearing.

9. A driving device according to claim 7, characterized in that: A first connection portion is formed on the support assembly; the packaging shell has a second connection portion on a side away from the rotor, and the first connection portion and the second connection portion are connected to the same mounting member, or the first connection portion and the second connection portion are connected to different mounting members.

10. A device suitable for use as a surface or underwater cleaning robot, characterized in that: The device comprises a driving device according to any one of claims 1 to 9.

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