Motor with electrocorrosion prevention function

Abstract

The embodiment of the invention provides a motor with an anti-electrocorrosion function. The motor comprises a rotating shaft, a rotor, an insulating part, a stator, a shell and a bearing, the rotating shaft penetrates through the stator and is rotationally arranged on the shell through a bearing, the rotor is arranged on the rotating shaft, and the stator is arranged in the shell and surrounds the stator; the insulating part is arranged between the rotating shaft and the rotor and used for isolating the rotating shaft from the rotor. According to the embodiment of the invention, no shaft current is generated on the motor rotating shaft, and the problem of bearing electro-corrosion is avoided.

Description

Technical Field

[0001] The present invention relates to the field of electromechanical equipment, and in particular to a motor with an anti-electrochemical corrosion function. Background Art

[0002] During the operation of a motor, in addition to electromagnetic induction generated inside, there will also be an accumulation of static electricity. The above-mentioned electromagnetic induction and static electricity accumulation will cause shaft current to be generated on the rotating shaft of the rotor, and the generation of shaft current is likely to cause electrochemical corrosion to the bearings used to support the rotation of the rotating shaft. Summary of the Invention

[0003] In view of the disadvantages of the existing methods, the present invention provides a motor with an anti-electrochemical corrosion function to solve the technical problem in the prior art that the bearings are electrochemically corroded due to the generation of shaft current on the motor rotating shaft.

[0004] In a first aspect, an embodiment of the present invention provides a motor with an anti-electrochemical corrosion function, including: a rotating shaft, a rotor, an insulating member, a stator, a housing, and bearings; The rotating shaft passes through the stator, and the rotating shaft is rotatably arranged on the housing through the bearings. The rotor is arranged on the rotating shaft, and the stator is arranged in the housing and surrounds the stator; The insulating member is arranged between the rotating shaft and the rotor to isolate the rotating shaft and the rotor.

[0005] Optionally, it further includes a first conductive member, and both ends of the first conductive member are correspondingly connected to both ends of the housing; The first conductive member is used to conduct the current at both ends of the housing; And / or, it further includes a second conductive member, one end of the second conductive member is connected to the stator, and the other end is connected to at least one end of the housing.

[0006] Optionally, the housing includes a body and two end covers; The two end covers are respectively arranged at one end of the body to seal the body; One end of the first conductive member is connected to one of the end covers, and the other end is connected to the other end cover; And / or, one end of the second conductive member is connected to the stator, and the other end is connected to at least one of the two end covers.

[0007] Optionally, one end of the first conductive member is provided with a bent portion, and the other end is provided with a clamping portion; The bent portion is provided with a fastening opening, the engaging portion is provided with an engaging opening, the fastening opening is fastened to one end of the body, the engaging opening is arranged at the other end of the body, and the engaging opening is engaged with the end cover at the end of the body far from the bent portion; And / or, a positioning hidden groove is arranged at one end of the body, a fitting step is arranged at one end of the second conductive member, and a engaging groove is arranged at the other end. The fitting step is lapped on the engaging groove, and the end cover close to the fitting step is engaged with the engaging groove.

[0008] Optionally, the engaging portion includes a movable post and two retaining rings arranged at both ends of the movable post; The movable post is inserted into the first conductive member and is movable relative to the first conductive member, and at least one of the two retaining rings is detachably connected to the movable post; The engaging opening is formed between the two retaining rings.

[0009] Optionally, the rotor includes a rotor core and a magnetic core; The rotor core includes a plurality of first strip-shaped irons, the magnetic core includes a plurality of magnetic strips, the plurality of first strip-shaped irons are arranged circumferentially around the rotating shaft, and one magnetic strip is arranged between two adjacent first strip-shaped irons.

[0010] Optionally, the side surface of the first strip-shaped iron close to the magnetic strip is defined as an installation surface, and limiting protrusions are arranged on at least one side of the installation surface close to or far from the rotating shaft, and the two limiting protrusions on the same side of two adjacent installation surfaces are arranged facing each other; The limiting protrusions limit the magnetic strip from radially disengaging from the position between two adjacent first strip-shaped irons along the rotating shaft.

[0011] Optionally, the number of the first strip-shaped irons and the magnetic strips is ten respectively.

[0012] Optionally, the stator includes a stator core and a plurality of winding groups; The stator core includes a plurality of second strip-shaped irons, and the plurality of second strip-shaped irons are arranged circumferentially around the rotating shaft to form a closed loop; One winding group is wound around one second strip-shaped iron.

[0013] Optionally, the second strip-shaped iron includes a support iron, an outer ring iron and an inner ring iron; The plurality of support irons are arranged circumferentially along the rotating shaft, the inner ring iron is arranged on the side of the support iron close to the rotating shaft, and the outer ring iron is arranged on the side of the support iron far from the rotating shaft; The outer ring irons on the outer sides of all the support irons are connected end to end in sequence to form a closed loop; Between the outer ring iron and the inner ring iron of the same supporting iron, a winding position for winding the winding group is formed by enclosing.

[0014] The beneficial technical effects brought by the technical solution provided by the embodiment of the present invention include: Firstly, the formation of shaft current is directly prevented by the insulating member, and the method of solving the shaft current from the root cause is more in line with the design concept of simplicity and efficiency. Secondly, the insulating member is arranged between the stator and the rotating shaft, and the stator fixes the insulating member on the rotating shaft together, without the need to additionally set a fixing structure for the insulating member; the rotor also provides additional wrapping protection for the insulating member; in addition, the stator, the insulating member and the rotating shaft rotate together and are in a relatively static state, and there is no rotational friction between them.

[0015] The additional aspects and advantages of the present invention will be partially given in the following description, and these will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0016] The above-mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where: Figure 1 is a schematic structural diagram of a motor product with an anti-electrochemical corrosion function provided by an embodiment of the present invention; Figure 2 is an exploded schematic diagram of a motor product with an anti-electrochemical corrosion function provided by an embodiment of the present invention; Figure 3 is Figure 1 a first cross-sectional view of a motor product with an anti-electrochemical corrosion function; Figure 4 is Figure 1 a second cross-sectional view of a motor product with an anti-electrochemical corrosion function; Figure 5 is Figure 2 a schematic structural diagram of a first conductive member of a motor product with an anti-electrochemical corrosion function; Figure 6 is Figure 2 a schematic structural diagram of a second conductive member of a motor product with an anti-electrochemical corrosion function; Figure 7 is a schematic structural diagram of a rotor and a stator of a motor product with an anti-electrochemical corrosion function provided by an embodiment of the present invention; Figure 8 is Figure 7 an enlarged view of part A;

[0017] Among them, the meanings of the reference numerals are as follows: 10. Rotating shaft; 20. Rotor; 21. Rotor core; 211. First strip-shaped iron; 2110. Limit protrusion; 22. Magnetic core; 221. Magnetic strip; 30. Insulating part; 40. Stator; 41. Stator core; 411. Second strip-shaped iron; 4110. Support iron; 4111. Outer ring iron; 4112. Inner ring iron; 42. Winding group; 50. Housing; 51. Body; 510. Positioning hidden groove; 52. End cover; 60. First conductive part; 61. Bent part; 610. Buckling opening; 62. Engaging part; 620. Engaging opening; 621. Movable column; 622. Retaining ring; 70. Second conductive part; 710. Fitting step; 711. Engaging groove; 80. Bearing; 90. Fixing groove. Detailed implementation manners

[0018] The present invention will be described in detail below. Examples of embodiments of the present invention are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. In addition, if a detailed description of the known art is unnecessary for showing the features of the present invention, it will be omitted. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0019] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood as having a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0020] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present invention means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include a wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0021] As a widely used product, the motor can be used as the power output source of many devices. For example, the applications of the motor include, but are not limited to, various electrical and electronic devices such as air conditioners and fans.

[0022] The following will specifically describe the technical solutions of the present invention and how the technical solutions of the present invention solve the above technical problems with specific embodiments.

[0023] An embodiment of the present invention provides a motor product with an anti-electrochemical corrosion function. The structural schematic diagram of the motor product is as Figures 1 - 4 shown, including: a rotating shaft 10, a rotor 20, an insulating member 30, a stator 40, a housing 50, and a bearing 80; The rotating shaft 10 passes through the stator 40, and the rotating shaft 10 is rotatably arranged on the housing 50 through the bearing 80. The rotor 20 is arranged on the rotating shaft 10, and the stator 40 is arranged in the housing 50 and surrounds the stator 40. The insulating member 30 is arranged between the rotating shaft 10 and the rotor 20 to isolate the rotating shaft 10 and the rotor 20.

[0024] Among them, according to the prior art, it can be known that the middle part of the housing 50 is a cavity. The rotating shaft 10 passes through the cavity of the housing 50, and the rotor 20 on the rotating shaft 10 is located in the cavity of the housing 50. The stator 40 is arranged on the inner wall of the cavity. Two bearings 80 are arranged on the rotating shaft 10, and the two bearings 80 are located at both ends of the stator 40. The bearing 80 is arranged on the housing 50, so that the rotating shaft 10 rotates relative to the housing 50.

[0025] Importantly, during the operation of the motor, electromagnetic induction and static electricity accumulation will occur. The above two phenomena will form an axial current on the rotating shaft 10. It can be known that the stator 40 and the rotor 20 are the main components generated by electromagnetic induction. In this embodiment, an insulating member 30 is arranged between the rotor 20 and the rotating shaft 10. The insulating member 30 isolates the stator 40 directly connected to the rotating shaft 10, thereby effectively preventing the generation of axial current. Other important considerations for arranging the insulating member 30 between the stator 40 and the rotating shaft 10 include: First, the stator 40 is fixedly arranged on the rotating shaft 10, so that the stator 40 fixes the insulating member 30 on the rotating shaft 10 together without additionally arranging a fixing structure for the insulating member 30; Second, the insulating member 30 is fastened between the stator 40 and the rotating shaft 10, and the stator 40, the insulating member 30, and the rotating shaft 10 rotate together and are in a relatively static state, so that the insulating member 30 is not easily worn, ensuring the insulation of the insulating member 30 and prolonging the service life of the insulating member 30; Third, the stator 40 wraps the insulating member 30, and the insulating member 30 is protected by the stator 40, further prolonging the service life of the insulating member 30. The insulating member is preferably BMC plastic (Bulk Molding Compound).

[0026] For example, the insulating member 30 is in a cylindrical structure and is disposed to wrap around the outside of the rotating shaft 10. The insulating member 30 of this embodiment is as long as the rotor 20, thereby filling and isolating all the gaps between the insulating member 30 and the rotating shaft 10 to ensure the effect of insulating isolation. In addition, to better prevent the end of the stator 40 from discharging to the rotating shaft 10, at this time, an isolating piece is provided at the end of the insulating member 30, and the isolating piece extends away from the rotating shaft 10 to at least cover part of the end of the rotor 20.

[0027] Similarly, a suitable insulating member 30 can also be sleeved on the outer ring of the bearing 80, and the insulating member 30 is used to isolate the bearing 80 from the housing 50.

[0028] Optionally, in combination with Figure 5 , the motor further includes a first conductive member 60, and both ends of the first conductive member 60 are correspondingly connected to both ends of the housing 50; the first conductive member 60 is used to conduct the current at both ends of the housing 50.

[0029] Among them, the current generated by electromagnetic induction and static electricity will also be reflected on the housing 50. In particular, the current magnitudes at both ends of the housing 50 are different, and the difference in the current magnitudes at both ends destroys the inductance balance of the housing 50, which is likely to cause a discharge phenomenon, and the discharge phenomenon will cause a corrosive effect on the rotating shaft 10.

[0030] For example, the first conductive member 60 is a metal member, and the first conductive member 60 can be set in a U-shaped structure. The U-shaped first conductive member 60 is adaptively buckled on the outer side wall of the housing 50. It should be noted that there is no contact between the middle part of the first conductive member 60 of this embodiment and the housing 50. The connection method between the end of the first conductive member 60 and the end of the housing 50 can be selected as a fixed connection method such as welding, or the end of the first conductive member 60 is provided with a fixing hole, and the end of the housing 50 is provided with a screw hole, and a bolt is passed through the fixing hole and screwed into the screw hole.

[0031] Optionally, in combination with Figure 6 , it further includes a second conductive member 70. One end of the second conductive member 70 is connected to the stator 40, and the other end is connected to at least one end of the housing 50.

[0032] In this embodiment, the second conductive member 70 is a metal member. One end of the second conductive member 70 passes through the housing 50 from inside the housing 50 and is finally connected to the end of the housing 50. Optionally, the connection method between the second conductive member 70 and the housing 50 includes the following methods: one end of the second conductive member 70 can be directly connected to one end of the housing 50; or, one end of the second conductive member 70 is directly connected to the first conductive member 60, so that the second conductive member 70 can be connected to both ends of the housing 50. The connection between the second conductive member 70 and the first conductive member 60 or the connection between the second conductive member 70 and the housing 50 can also adopt welding or the bolt connection as described above.

[0033] It should be emphasized that the concept of the connection between the stator 40 and the end of the housing 50 in this embodiment lies in that, different from the connection method at both ends of the housing 50 itself, the connection at both ends of the housing 50 itself achieves the balance between external electric potentials. The scheme of connecting the stator 40 to the end of the housing 50 involves the connection between two different components; it can be understood that this scheme is the connection inside and outside the motor. In such a new scheme, its function is to lead the current on the stator 40 to the housing 50 externally, directly weakening the source of the shaft voltage formation from the source. This method is different from the way the insulating part 30 blocks the current from flowing to the rotating shaft 10. It weakens the current that may flow to the rotating shaft 10 from another direction, reducing the pressure on the insulating part 30. In summary, the above two methods of preventing shaft current generation complement each other to achieve the effect of preventing shaft current generation in a superimposed manner.

[0034] Optionally, the housing 50 includes a body 51 and two end covers 52; the two end covers 52 are respectively arranged at one end of the body 51 to enclose the body 51; one end of the first conductive member 60 is connected to one of the end covers 52, and the other end is connected to the other end cover 52; and / or, one end of the second conductive member 70 is connected to the stator 40, and the other end is connected to at least one of the two end covers 52.

[0035] Exemplarily, the body 51 is of a U-shaped structure, and the middle part of the body 51 is hollow to mainly form the above-mentioned cavity. The rotor 20 and the stator 40 are arranged in the body 51. The bottom of the body 51 is provided with an installation hole for the bearing 80. One end of the rotating shaft 10 passes through the installation hole and extends outside the body 51, and the other end extends outside the opening of the U-shaped opening of the body 51. One end cover 52 covers the opening of the U-shaped opening (for the convenience of description, this end cover is named the large end cover), and the other end cover covers outside the installation hole (for the convenience of description, this end cover is named the small end cover). In this embodiment, both ends of the rotating shaft 10 penetrate the nearby end covers respectively. Among them, the outer contour of the end cover 52 can be selected as an arc structure, thereby reducing the potential risk of bumping caused by the corners.

[0036] Preferably, the body 51 is made of an insulating material. The body 51 and the end covers 52 in the foregoing embodiments can both be made of conductive materials, such as various metals, etc. In this embodiment, the body 51 is preferably BMC plastic (Bulk Molding Compound), so the two end covers 52 are made of conductive materials. Specifically, the BMC plastic in this embodiment can also be plastic-sealed on the outer wall of the small end cover. Compared with the traditional iron shell, the BMC plastic used in this embodiment has better insulation performance and corrosion resistance for the motor housing. It can improve the safety and reliability of the motor and extend the service life of the motor. In addition, the manufacturing process of BMC plastic-sealing is relatively simple and the cost is low. At the same time, due to its light weight, the transportation cost can be reduced.

[0037] Optionally, one end of the first conductive member 60 is provided with a bent portion 61, and the other end is provided with a clamping portion 62; the bent portion 61 is provided with a buckling opening 610, and the clamping portion 62 is provided with a clamping opening 620. The buckling opening 610 is buckled on one end of the body 51, and the clamping opening 620 is arranged at the other end of the body 51. The clamping opening 620 is clamped on the end cover 52 at the end of the body 51 away from the bent portion 61; and / or, a positioning hidden groove 510 is arranged at one end of the body 51. One end of the second conductive member 70 is provided with a fitting step 710, and the other end is provided with a clamping groove 711. The fitting step 710 is lapped on the clamping groove 711, and the end cover 52 close to the fitting step 710 is clamped into the clamping groove 711.

[0038] Wherein, the buckling opening 610 is a U-shaped opening and faces the direction of the body 51. Therefore, according to the above structure of the body 51, the buckling opening 610 is buckled on the edge of the U-shaped opening of the body 51, and the large end cover abuts against the bent portion 61 when buckling. The clamping opening 620 is an open clamping groove, and the open clamping groove is directly clamped on the edge of the small end cover. In summary, the first conductive member 60 completes the connection of the two end covers 52.

[0039] Alternatively, the buckling opening 610 is a U-shaped opening and is arranged in the direction away from the body 51. In this way, the buckling opening 610 is buckled on the edge of the large end cover, and details will not be elaborated here.

[0040] In addition, the first conductive member 60 is embedded in the outer wall of the body 51, so as to prevent the first conductive member 60 from protruding outside the body 51 and avoid problems such as bumping with the outside.

[0041] Similarly, the second conductive member 70 is preferably arranged at the opening of the U-shaped body 51. According to the above, the positioning hidden groove 510 is arranged at the edge of the opening, which hides the second conductive member 70 and the body 51 into one body and can also be used as the installation positioning of the second conductive member 70. Specifically, the second conductive member 70 in the positioning hidden groove 510 does not protrude beyond the outer edge of the opening of the U-shaped body 51. In this way, the second conductive member 70 does not affect the buckling between the large end cover and the body 51, that is, there is no gap between the large end cover and the body 51.

[0042] It should be noted that the fitting step 710 is lapped on the outer wall of the body 51 and is located in the positioning hidden groove 510. At this time, the end of the second conductive member 70 away from the large end cover abuts against the stator 40. When the large end cover covers the body 51, the edge of the large end cover is clamped in the clamping groove 711.

[0043] In addition, in this embodiment, the body 51 is cylindrical, and the outer wall of the second conductive member 70 can be set to an arc shape adapted to the outer wall of the body 51 to increase the integration degree of the appearance of the two.

[0044] In addition, two second conductive members 70 may be provided, and each end cap 52 is connected to the stator 40 through a second conductive member 70 respectively. Alternatively, when only one second conductive member 70 is provided, the second conductive member 70 may be connected to the first conductive member 60, and thus may also be connected to the two end caps 52.

[0045] Furthermore, to increase the connection reliability between the large end cap and the first conductive member 60 and the second conductive member 70, a fixing groove 90 is provided inside the large end cap. The fixing groove 90 is a U-shaped groove. When the large end cap covers the opening of the body 51, the fixing groove 90 is buckled on the bending portion 61 and the inner edge of the engaging groove 711.

[0046] Optionally, the engaging portion 62 includes a movable post 621 and two retaining rings 622 provided at both ends of the movable post 621; the movable post 621 is inserted into the first conductive member 60 and is movable relative to the first conductive member 60, and at least one of the two retaining rings 622 is detachably connected to the movable post 621; a engaging opening 620 is formed between the two retaining rings 622.

[0047] Exemplarily, a perforation is provided at the end of the first conductive member 60. At this time, the radial direction of the perforation is parallel to the radial direction of the rotating shaft 10. The movable post 621 is inserted into the perforation. Optionally, the two retaining rings 622 are respectively screwed to one end of the movable post 621, and the side wall of the small end cap is clamped between the two retaining rings 622. In addition, the distance between the two retaining rings 622 is adjustable, so the clamping degree of the small end cap by the two can be adjusted.

[0048] Optionally, in combination with Figure 7 , the rotor 20 includes a rotor core 21 and a magnetic core 22; the rotor core 21 includes a plurality of first strip-shaped irons 211, the magnetic core 22 includes a plurality of magnetic strips 221, the plurality of first strip-shaped irons 211 are circumferentially arranged around the rotating shaft 10, and a magnetic strip 221 is provided between two adjacent first strip-shaped irons 211.

[0049] For the convenience of description, in this embodiment, the side of the first strip-shaped iron 211 close to the rotating shaft 10 is the inner side, and the side far away is the outer side. Exemplarily, the first strip-shaped irons 211 can be circumferentially joined to finally form a cylindrical whole. Therefore, the inner width of the first strip-shaped iron 211 is smaller than the outer thickness (the cross-section of the first strip-shaped iron 211 in the thickness direction is trapezoidal). In addition, to reduce the weight of the first strip-shaped iron 211, the first strip-shaped iron 211 may be provided with a hollow structure. In addition, the above-mentioned magnetic strip 221 is preferably a cuboid structure, and the magnetic strip 221 has the same length as the first strip-shaped iron 211 along the axial direction of the rotating shaft 10. Similarly, the magnetic strip 221 and the magnetic strip 221 and the first strip-shaped iron 211 may also have the same width along the radial direction of the rotating shaft 10. A longer or wider magnetic strip 221 can provide a stronger magnetic field.

[0050] In this embodiment, the inner side of the first strip-shaped iron 211 abuts and is fixed on the outer side wall of the insulating member 30. A magnetic strip 221 is clamped and fixed by two adjacent first strip-shaped irons to form the rotor 20.

[0051] Changing the rotor core 21 from a monolithic structure to a segmented structure as described above can improve the material utilization rate and reduce iron loss. In addition, the segmented structure can make the magnetic field distribution more uniform, reduce eddy current loss, and improve the efficiency of the motor. At the same time, the segmented structure can also improve the NVH (Noise, Vibration, Harshness) performance of the motor, making it run more smoothly and quietly. In addition, the rotor core with a segmented structure is easier to manufacture and repair, improving production efficiency and product reliability.

[0052] In addition, the magnetic strip 221 in this embodiment is an embedded type, which can improve the performance of the motor. The embedded magnetic strip 221 can provide a stronger magnetic field, improve the torque output and efficiency of the motor. At the same time, this structure can also reduce the magnetic flux leakage of the magnetic field and improve the power factor of the motor.

[0053] Optionally, define the side of the first strip-shaped iron 211 close to the magnetic strip 221 as the installation surface. At least one side of the installation surface close to or away from the rotating shaft 10 is provided with a limiting protrusion 2110, and the two limiting protrusions 2110 on the same side of two adjacent installation surfaces are arranged facing each other; the limiting protrusion 2110 restricts the magnetic strip 221 from radially disengaging from the position between two adjacent first strip-shaped irons 211 along the rotating shaft 10.

[0054] Exemplarily, combining the foregoing, it can be known that the limiting protrusion 2110 is provided on the inner side and / or the outer side (the side close to or away from the stator 40) of the installation surface. It is provided at the end of the installation surface in the axial direction of the rotating shaft 10. Thus, taking the number of limiting protrusions 2110 provided on two adjacent installation surfaces of two adjacent first strip-shaped irons 211 as an example. First, on the same side of the two installation surfaces, there is and only one side provided with a limiting protrusion, and the two limiting protrusions 2110 on the same side limit the possibility of the magnetic strip 221 moving radially in the direction of the limiting protrusion 2110 along the rotating shaft 10, preventing the magnetic strip from disengaging from between the two first strip-shaped irons 211 in this direction. Second, limiting protrusions 2110 are provided on both sides of the installation surface. In this way, both the inner side and the outer side of the same magnetic strip 221 are respectively limited by two limiting protrusions 2110. It can be understood that if the length of the magnetic strip 221 is relatively long, the length of the limiting protrusion 2110 along the axial direction of the rotating shaft 10 can be set to be equal to the length of the magnetic strip 221 to increase the limiting contact area.

[0055] Optionally, the number of the first strip-shaped irons 211 and the magnetic strips 221 is ten respectively.

[0056] In this embodiment, the first strip-shaped iron 211 and the magnetic strip 221 are separated. The motor with the number of poles corresponding to the ten magnetic strips 221 has higher efficiency, can reduce energy consumption, and improve the energy efficiency ratio of the electrical appliance. For example, it can increase the speed range and torque output of the motor, enabling the electrical appliance to operate stably under different working conditions. At the same time, the NVH (Noise, Vibration, Harshness) performance of the motor is also improved, and it runs more smoothly and quietly.

[0057] Optionally, in combination with Figure 7 and Figure 8 , the stator 40 includes a stator core 41 and a plurality of winding groups 42; the stator core 41 includes a plurality of second strip-shaped irons 411, and the plurality of second strip-shaped irons 411 are circumferentially arranged around the rotating shaft 10 to form a closed loop; one winding group 42 is wound around one second strip-shaped iron 411.

[0058] Among them, it can be known that the winding group 42 for energization is arranged on the stator core 41, and the plurality of second strip-shaped irons 411 of the closed loop surround the circumferential side of the rotor 20, which will not be elaborated here. The focus of this embodiment lies in the setting scheme of the plurality of second strip-shaped irons 411. Different from the traditional integrally arranged stator core 41, the plurality of second strip-shaped irons 411 are arranged in blocks. In this regard, the stator core 41 is changed from a whole circle to a straight bar, which can significantly improve the material utilization rate. This enables more stator cores 41 to be manufactured with the same material input, thereby increasing the output of the motor. More importantly, the straight bar structure helps to optimize the magnetic field distribution, improve the efficiency and power factor of the motor, and further enhance the performance of the equipment applying this motor. On this basis, due to the improvement of the material utilization rate, the waste of materials is reduced, and the production cost is lowered.

[0059] Optionally, the second strip-shaped iron 411 includes a support iron 4110, an outer ring iron 4111, and an inner ring iron 4112; a plurality of support irons 4110 are arranged circumferentially along the rotating shaft 10, the inner ring iron 4112 is arranged on the side of the support iron 4110 close to the rotating shaft 10, and the outer ring iron 4111 is arranged on the side of the support iron 4110 far from the rotating shaft 10; the outer ring irons 4111 on the outer sides of all the support irons 4110 are connected end to end in sequence to form a closed loop; a winding position for winding the winding group 42 is formed by enclosing between the outer ring iron 4111 and the inner ring iron 4112 of the same support iron 4110.

[0060] Exemplarily, the support iron 4110 is of a cuboid structure and is arranged parallel to the axial direction of the rotating shaft 10. In this way, the support iron 4110 has two opposite sides close to and far from the rotating shaft 10.

[0061] Preferably, the outer ring iron 4111 is an arc-shaped piece, and a plurality of arc-shaped pieces are spliced with each other in the above manner to form a closed-loop cylinder. Referring to the outer ring iron, the inner ring iron 4112 is also set as an arc-shaped piece. The difference is that the inner ring irons 4112 are not connected to each other. In this embodiment, the outer ring iron 4111 and the midpoint of the outer ring iron 4111 are connected to the support iron 4110. Thus, the cross-section of one second strip iron 411 is a structure similar to an I-shaped structure. At this time, each support iron 4110 has a winding position.

[0062] Those skilled in the art of the present technology can understand that the various operations, methods, steps, measures, and solutions in the processes discussed in the present invention can be alternated, changed, combined, or deleted. Further, other steps, measures, and solutions in the various operations, methods, and processes discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, those in the prior art having the steps, measures, and solutions in the various operations, methods, and processes disclosed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0064] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0065] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0067] It should be understood that although the steps in the flowchart of the accompanying drawings are shown sequentially in the direction of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction for the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0068] The above are only some embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A motor with anti-electrocorrosion function, characterized in that: It comprises a rotating shaft (10), a rotor (20), an insulating member (30), a stator (40), a housing (50) and a bearing (80); The rotating shaft (10) is inserted into the stator (40), and the rotating shaft (10) is rotatably arranged on the housing (50) via the bearing (80); the rotor (20) is arranged on the rotating shaft (10), and the stator (40) is arranged in the housing (50) and surrounds the stator (40); The insulating member (30) is arranged between the rotating shaft (10) and the rotor (20) to isolate the rotating shaft (10) from the rotor (20).

2. The motor with anti-electrocorrosion function according to claim 1, characterized in that: It also includes a first conductive member (60), wherein two ends of the first conductive member (60) are correspondingly connected to two ends of the housing (50); The first conductive member (60) is used to conduct current between two ends of the housing (50); And / or, further comprising a second conductive member (70), one end of the second conductive member (70) being connected to the stator (40) and the other end being connected to at least one end of the housing (50).

3. The motor with anti-electrocorrosion function according to claim 2, characterized in that: The housing (50) comprises a body (51) and two end covers (52); The two end covers (52) are respectively arranged at one end of the body (51) to close the body (51); One end of the first conductive member (60) is connected to one of the end covers (52), and the other end is connected to the other end cover (52); And / or, one end of the second conductive member (70) is connected to the stator (40), and the other end is connected to at least one of the two end covers (52).

4. The motor with anti-electrocorrosion function according to claim 3, characterized in that: One end of the first conductive member (60) is provided with a bending portion (61), and the other end is provided with a clamping portion (62); The bent portion (61) is provided with a snap-fitting opening (610), and the snap-fitting portion (62) is provided with a snap-fitting opening (620); the snap-fitting opening (610) is snap-fitted to one end of the body (51), and the snap-fitting opening (620) is provided at the other end of the body (51); the snap-fitting opening (620) is snap-fitted to the end cover (52) at the end of the body (51) away from the bent portion (61); And / or, a positioning hidden groove (510) is provided at one end of the body (51), an engaging step (710) is provided at one end of the second conductive member (70), and a snap-fitting groove (711) is provided at the other end, the engaging step (710) overlaps the snap-fitting groove (711), and the end cover (52) close to the engaging step (710) snaps into the snap-fitting groove (711).

5. The motor with anti-electrocorrosion function according to claim 4, characterized in that: The engaging portion (62) comprises a movable column (621) and two retaining rings (622) arranged at both ends of the movable column (621); The movable column (621) is plugged into the first conductive member (60) and is movable relative to the first conductive member (60), and at least one of the two retaining rings (622) is detachably connected to the movable column (621); The engaging opening (620) is formed between the two retaining rings (622).

6. The motor with anti-electrocorrosion function according to claim 1, characterized in that: The rotor (20) comprises a rotor iron core (21) and a magnetic core (22); The rotor iron core (21) comprises a plurality of first iron bars (211), the magnetic core (22) comprises a plurality of magnetic strips (221), the plurality of first iron bars (211) are circumferentially arranged around the rotating shaft (10), and one magnetic strip (221) is arranged between two adjacent first iron bars (211).

7. The motor with anti-electrocorrosion function according to claim 6, characterized in that: The side surface of the first iron bar (211) close to the magnetic bar (221) is defined as a mounting surface, and a limiting protrusion (2110) is provided on at least one side of the mounting surface close to or away from the rotating shaft (10), and two limiting protrusions (2110) on the same side of two adjacent mounting surfaces are arranged facing each other; The limiting protrusion (2110) limits the magnetic strip (221) from escaping from the position between two adjacent first iron bars (211) along the radial direction of the rotating shaft (10).

8. The motor with anti-electrocorrosion function according to claim 6 or 7, characterized in that: The number of the first iron bars (211) and the number of the magnetic bars (221) are ten respectively.

9. The motor with anti-electrocorrosion function according to claim 1, characterized in that: The stator (40) comprises a stator core (41) and a plurality of winding groups (42); The stator core (41) comprises a plurality of second iron bars (411), wherein the plurality of second iron bars (411) are arranged to surround the rotating shaft (10) in a circumferential direction and form a closed loop; One of the second iron bars (411) is wound with a winding set (42).

10. The motor with anti-electrocorrosion function according to claim 9, characterized in that: The second bar iron (411) comprises a supporting iron (4110), an outer ring iron (4111) and an inner ring iron (4112); A plurality of the support irons (4110) are arranged along the circumferential direction of the rotating shaft (10), the inner ring iron (4112) is arranged on a side of the support iron (4110) close to the rotating shaft (10), and the outer ring iron (4111) is arranged on a side of the support iron (4110) away from the rotating shaft (10); The outer ring irons (4111) outside all the supporting irons (4110) are connected end to end in sequence to form a closed loop; The enclosure between the outer iron ring (4111) and the inner iron ring (4112) of the same support iron (4110) forms a winding position for the winding assembly (42).

Images