A driving device and a cleaning robot

Abstract

The utility model provides a kind of driving device and cleaning robot, belong to motor technical field, comprising: stator, it includes coil winding and stator shell, the coil winding is set in the stator shell;Rotor, it includes rotor main body and output shaft, the rotation gap is formed between the rotor main body and the stator shell, one end of the output shaft is connected with the rotor main body, the other end of the output shaft extends in the direction away from the stator shell;Supporting assembly, the output shaft rotatably with the supporting assembly is connected and located in the stator shell, and the end of the supporting assembly close to the stator is provided with coaxial positioning part.The utility model has the beneficial effect that: it can be positioned directly by coaxial positioning part, so that output shaft can keep accurate coaxial degree with stator in high-speed rotating process, effectively avoid the problem that rotor and stator axis deviate, unable to keep concentric.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology and relates to a drive device and a cleaning robot. Background Technology

[0002] Existing internal rotor motors include a stator housing, stator windings housed within the stator housing, a rotor, an output shaft fixedly connected to the rotor, and a support assembly. The support assembly is equipped with bearings supporting the output shaft. The stator housing extends towards the support assembly from one end and is threadedly connected to the support assembly, using a direct positioning method on the stator housing. However, during actual operation, due to the gap between the threads between the stator housing and the support assembly, even if the stator housing is positioned, the support assembly may still wobble relative to the positioned support assembly. This results in technical problems such as rotor and stator shaft misalignment and failure to maintain concentricity, indicating significant room for improvement. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a driving device and a cleaning robot.

[0004] The objective of this utility model can be achieved through the following technical solution: A driving device, comprising:

[0005] A stator, comprising a coil winding and a stator housing, wherein the coil winding is disposed within the stator housing;

[0006] The rotor includes a rotor body and an output shaft. A rotational gap is formed between the rotor body and the stator housing. One end of the output shaft is connected to the rotor body, and the other end of the output shaft extends away from the stator housing.

[0007] The output shaft is rotatably connected to the support assembly and located inside the stator housing. The support assembly has a coaxial positioning part at one end near the stator to ensure that the rotor and stator are coaxial.

[0008] In one of the aforementioned driving devices, the stator housing has a water outlet channel that communicates with the rotation gap, allowing water to enter the water outlet channel from the rotation gap and exit from the outside of the stator housing.

[0009] In one of the aforementioned driving devices, the water outlet channels are arranged in a ring around the circumferential direction of the stator housing.

[0010] In one of the aforementioned driving devices, the stator housing is provided with a first connecting portion, and the support assembly is provided with a second connecting portion at one end away from the stator. The support assembly is detachably connected to the first connecting portion of the stator housing via the second connecting portion.

[0011] In one of the aforementioned driving devices, the first connecting part is configured with an internal thread, and the second connecting part is configured with an external thread. The stator housing can be threadedly connected to the external thread of the support assembly via the internal thread.

[0012] In one of the aforementioned driving devices, two rotary bearings are further included, which are located at opposite ends of the mounting body, and the output shaft is rotatably connected to the mounting body via the rotary bearings.

[0013] In one of the aforementioned driving devices, the mounting body is provided with a receiving groove, and the rotating bearing is located within the receiving groove.

[0014] In one of the aforementioned driving devices, a retaining ring is also included. The output shaft is provided with a retaining groove, and the retaining ring is detachably connected to the retaining groove. The retaining ring restricts the rotating bearing within the receiving groove.

[0015] In one of the aforementioned drive devices, a rotating mechanism is further included, which is connected to the end of the output shaft away from the stator housing.

[0016] Secondly, a cleaning robot includes the aforementioned drive unit.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. By setting a coaxial positioning part on the support assembly near the stator, positioning can be performed directly through the coaxial positioning part, so that the output shaft can maintain precise coaxiality with the stator during high-speed rotation, effectively avoiding the problem of rotor and stator shaft misalignment and failure to maintain concentricity.

[0019] 2. A water outlet channel is provided in the stator housing and connected to the rotation gap, so that water entering from the rotation gap can be discharged from the water outlet channel. This can prevent water entering from the rotation gap from generating resistance and also prevent the accumulation of garbage and impurities. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the drive device of this utility model.

[0021] Figure 2 This is an exploded view of the driving device of this utility model.

[0022] Figure 3 This is a top view of the drive device of this utility model.

[0023] Figure 4 for Figure 3 A cross-sectional view from the perspective of AA.

[0024] In the diagram, 100 is the stator; 110 is the coil winding; 120 is the stator housing; 121 is the water outlet channel; 122 is the internal thread; 200 is the rotor; 210 is the rotor body; 220 is the output shaft; 221 is the slot; 230 is the rotation clearance; 300 is the support assembly; 310 is the coaxial positioning part; 320 is the receiving groove; 330 is the external thread; 400 is the rotating bearing; and 500 is the rotating mechanism. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] like Figures 1-4 As shown, a drive device includes: a stator 100, a rotor 200, and a support assembly 300.

[0032] The stator 100 includes a coil winding 110 and a stator housing 120, wherein the coil winding 110 is disposed inside the stator housing 120.

[0033] The rotor 200 includes a rotor 200 body and an output shaft 220. A rotational gap 230 is formed between the rotor 200 body and the stator housing 120. One end of the output shaft 220 is connected to the rotor 200 body, and the other end of the output shaft 220 extends away from the stator housing 120.

[0034] The support assembly 300 is provided with the output shaft 220 rotatably connected to the support assembly 300 and located inside the stator housing 120. The support assembly 300 is provided with a coaxial positioning part 310 at one end near the stator 100.

[0035] In this embodiment, by providing a coaxial positioning part 310 at one end of the support assembly 300 near the stator 100, positioning can be performed directly through the coaxial positioning part 310, so that the output shaft 220 can maintain precise coaxiality with the stator 100 during high-speed rotation, effectively avoiding the problem of the rotor 200 and the stator 100 axis offset and failure to maintain concentricity.

[0036] like Figures 1-4 As shown, based on the above embodiment, the stator housing 120 is provided with a water outlet channel 121, which is connected to the rotation gap 230.

[0037] In this embodiment, a water outlet channel 121 is provided in the stator housing 120 and communicates with the rotation gap 230, so that water entering from the rotation gap 230 can be discharged from the water outlet channel 121, which can prevent the water entering from the rotation gap 230 from generating resistance, and can also prevent the accumulation of garbage and impurities.

[0038] like Figures 1-4 As shown, based on the above embodiment, the water outlet channel 121 is distributed in a ring around the stator housing 120 in the circumferential direction.

[0039] like Figures 1-4 As shown, based on the above embodiment, the stator housing 120 is provided with a first connecting portion, and the support component 300 is provided with a second connecting portion at one end away from the stator 100. The support component 300 is detachably connected to the first connecting portion of the stator housing 120 through the second connecting portion.

[0040] Preferably, the first connecting part is configured with an internal thread 122, and the second connecting part is configured with an external thread 330. The stator housing 120 can be threadedly connected to the support assembly 300 with the external thread 330 via the internal thread 122.

[0041] In this embodiment, a threaded connection is achieved by providing an internal thread 122 on the stator housing 120 and an external thread 330 on the support assembly 300. This connection method is simple in structure, easy to assemble and disassemble, and has a firm connection. It does not require additional fasteners, reduces the number of parts and assembly steps, and improves assembly efficiency and sealing reliability.

[0042] like Figures 1-4 As shown, based on the above embodiment, it also includes two rotating bearings 400, which are located at both ends of the support assembly 300 respectively. The output shaft 220 is rotatably connected to the support assembly 300 through the rotating bearings 400.

[0043] In this embodiment, two rotating bearings 400 are provided at both ends of the support assembly 300. The output shaft 220 is rotatably supported by the bearings, forming a double-point support structure, which significantly improves the rotational accuracy and load-bearing capacity of the output shaft 220. The double bearing arrangement effectively suppresses axial and radial runout, ensuring the stability of the output shaft 220 under high-speed operation.

[0044] like Figures 1-4 As shown, based on the above embodiment, the support component 300 is provided with a receiving groove 320, and the rotating bearing 400 is located in the receiving groove 320.

[0045] In this embodiment, a receiving groove 321 is provided on the support component 300 to position and fix the rotating bearing 400, ensuring that the bearing is installed in a precise position and is not easily offset. This enhances the fit stability between the bearing and the support component 300, prevents the bearing from loosening or shifting during operation, and further improves the coaxiality and rotational accuracy of the output shaft 220, which is beneficial for reducing noise and vibration.

[0046] like Figures 1-4As shown, based on the above embodiment, a retaining ring (not shown in the figure) is also included. The output shaft 220 is provided with a retaining groove 221. The retaining ring is detachably connected to the retaining groove 221 and the retaining ring restricts the rotating bearing 400 within the receiving groove 320.

[0047] In this embodiment, by providing a slot 221 on the output shaft 220 and using a detachable retaining ring, the rotating bearing 400 is axially confined within the receiving groove 320, thereby achieving rapid assembly and reliable locking of the bearing.

[0048] like Figures 1-4 As shown, based on the above embodiment, a rotating mechanism 500 is also included, which is connected to the end of the output shaft 220 away from the stator housing 120.

[0049] In this embodiment, a rotating mechanism 500, such as an impeller, is connected to the end of the output shaft 220 away from the stator housing 120, directly transmitting the driving force to the external working parts. This enables the drive device to not only have power output capability but also to be integrated with various actuators, making it widely applicable to different application scenarios (such as water flow drive, cleaning brush rotation, etc.), thus enhancing its versatility and integration level.

[0050] like Figures 1-4 As shown, a cleaning robot includes the aforementioned drive unit.

Claims

1. A driving device, characterized in that: include: A stator, comprising a coil winding and a stator housing, wherein the coil winding is disposed within the stator housing; The rotor includes a rotor body and an output shaft. A rotational gap is formed between the rotor body and the stator housing. One end of the output shaft is connected to the rotor body, and the other end of the output shaft extends away from the stator housing. A support assembly is provided, wherein the output shaft is rotatably connected to the support assembly and located inside the stator housing, and a coaxial positioning part is provided at one end of the support assembly near the stator.

2. The driving device as described in claim 1, characterized in that: The stator housing has a water outlet channel, which is connected to the rotation gap.

3. The driving device as described in claim 2, characterized in that: The water outlet channels are distributed in a ring around the circumferential direction of the stator housing.

4. The driving device as described in claim 1, characterized in that: The stator housing is provided with a first connecting portion, and the support assembly is provided with a second connecting portion at the end away from the stator. The support assembly is detachably connected to the first connecting portion of the stator housing through the second connecting portion.

5. A driving device as described in claim 4, characterized in that: The first connecting part is configured with an internal thread, and the second connecting part is configured with an external thread. The stator housing can be threadedly connected to the external thread of the support assembly through the internal thread.

6. The driving device as described in claim 1, characterized in that: It also includes two rotary bearings, which are located at both ends of the support assembly, and the output shaft is rotatably connected to the support assembly through the rotary bearings.

7. A driving device as described in claim 6, characterized in that: The support assembly is provided with a receiving groove, and the rotating bearing is located in the receiving groove.

8. A driving device as described in claim 7, characterized in that: It also includes a retaining ring, the output shaft is provided with a retaining groove, the retaining ring is detachably connected to the retaining groove, and the retaining ring restricts the rotating bearing within the receiving groove.

9. A driving device as described in claim 1, characterized in that: It also includes a rotating mechanism connected to the end of the output shaft away from the stator housing.

10. A cleaning robot, characterized in that, Includes a drive device as described in any one of claims 1-9.

Images