Motor compatible with protection and heat dissipation

Abstract

The utility model aims to provide a motor compatible with protection and heat dissipation, which comprises a stator assembly and a rotor assembly, the stator assembly comprises a stator piece, a bottom cover and a bottom steel mesh, the bottom cover is arranged at one end of the stator piece, the stator piece is provided with a plurality of ventilation holes along the axial direction, the bottom steel mesh is arranged on one side surface, close to the stator piece, of the bottom cover, and the bottom steel mesh is arranged on the rotor assembly. A plurality of first through holes are formed in the bottom steel mesh, the rotor assembly comprises a rotor part and a rotating steel mesh, the rotor part is rotationally arranged at the end, away from the bottom cover, of the stator part, the rotating steel mesh is arranged on the side face, close to the stator part, of the rotor part, a plurality of air outlet holes are formed in the rotor part in the radial direction, and a plurality of second through holes are formed in the rotating steel mesh; the second through hole and the first through hole are hexagonal holes with the inscribed circle diameter being 1 mm, and when the rotor assembly rotates relative to the stator assembly, air sequentially flows through the first through hole, the ventilation hole, the second through hole and the air outlet hole.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor compatible with protection and heat dissipation. Background Art

[0002] With the development of the drone industry, higher requirements are put forward for the protection level and heat dissipation performance of the motors used. When the protection level is too low, it may cause foreign objects to enter the motor during takeoff or flight, resulting in the motor being stuck; at the same time, when the operator operates improperly, it may cause a finger to reach into the motor and cause a safety accident, posing a great safety hazard.

[0003] The protection level of the motor is closely related to the heat dissipation performance. The higher the protection level, the worse the heat dissipation ability. Therefore, with too high a protection level, the motor is more likely to be burned out due to overheating during use, affecting its service life and operating performance. In view of this, in order to solve the above contradictory technical problems, the motor compatible with protection and heat dissipation of the present application is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a motor compatible with protection and heat dissipation that can not only improve the protection level of the motor but also improve the heat dissipation ability of the motor.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A motor compatible with protection and heat dissipation, comprising:

[0007] A stator assembly, the stator assembly includes a stator member, a bottom cover and a bottom steel mesh. The bottom cover is arranged at one end of the stator member. A plurality of ventilation holes are axially formed in the stator member. The bottom steel mesh is arranged on the side surface of the bottom cover close to the stator member, and a plurality of first through holes are formed in the bottom steel mesh; and

[0008] A rotor assembly, the rotor assembly includes a rotor member and a rotating steel mesh. The rotor member is rotatably arranged at the end of the stator member away from the bottom cover. The rotating steel mesh is arranged on the side surface of the rotor member close to the stator member. A plurality of air outlet holes are radially formed in the rotor member. A plurality of second through holes are formed in the rotating steel mesh. The second through holes and the first through holes are all hexagonal holes with an inscribed circle diameter of 1 mm;

[0009] When the rotor assembly rotates relative to the stator assembly, air flows through the first through hole, the ventilation hole, the second through hole and the air outlet hole in sequence.

[0010] In one embodiment, a plurality of large through holes are formed on the bottom cover, and the bottom steel mesh covers each of the large through holes.

[0011] In one embodiment, a plurality of stripe holes are further provided on the bottom cover, and the stripe holes are distributed around the large through hole, and the width of each stripe hole is 1 mm.

[0012] In one embodiment, the rotor component includes a centrifugal fan case, a casing and a rotating shaft, one end of the rotating shaft is arranged on the centrifugal fan case, and the other end of the rotating shaft is rotatably connected to the stator component. The casing is arranged on the centrifugal fan case, and the casing is non-contactly covered on the outside of the stator component. Each of the air outlets is located on the centrifugal fan case, and the rotating steel mesh is arranged on a side surface of the centrifugal fan case close to the stator component.

[0013] In one embodiment, the rotor component also includes a pressure ring and a plurality of magnetic sheets. The pressure ring is arranged on the inner wall of the casing. The magnetic sheets are arranged on the inner wall of the casing at intervals, and both ends of each magnetic sheet are respectively connected to the pressure ring and the centrifugal fan casing.

[0014] In one embodiment, a plurality of slots are provided on the pressure ring, and the magnetic sheets are located in the slots in a one-to-one correspondence.

[0015] In one embodiment, the stator component includes a stator base and a plurality of stator cores, each of the stator cores is circumferentially spaced apart on the outer wall of the stator base, and each of the stator cores is wound with an enameled wire group, and the enameled wire group is distributed at the same height as the magnetic sheet, and each of the ventilation holes is located on the stator base.

[0016] In one embodiment, a plurality of bearings are coaxially arranged on the stator seat, the rotating shaft is sequentially passed through each of the bearings, and a locking screw is provided at one end of the rotating shaft away from the centrifugal fan housing, and the locking screw is used to clamp the rotating shaft.

[0017] In one embodiment, an induction magnetic block is provided on one end of the locking screw away from the rotating shaft, and a magnetic plate is provided on one side of the bottom cover close to the rotating shaft, and the magnetic plate is aligned with the induction magnetic block.

[0018] In one embodiment, the magnetically woven plate is covered with a glue potting layer.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] When the rotor member rotates continuously relative to the stator member, the outside air enters from the bottom cover, then flows through the ventilation holes after passing through the first through hole, and finally flows out from the air outlet hole after passing through the second through hole. It should be noted that in the stator member, a heat dissipation rib is formed between any two adjacent ventilation holes. During the starting process of the motor, the gas continuously flows through the heat dissipation rib, so the heat generated on the stator member can be quickly taken away, and thus it has good heat dissipation and cooling performance; further, since both the first through hole and the second through hole are hexagonal holes with an inscribed circle diameter of 1 mm, foreign objects with a diameter equal to or greater than 1 mm can be effectively blocked, so it has good protection performance. In this way, the motor with compatible protection and heat dissipation of the present application can well balance the functions of high protection and high heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Structural schematic diagram of a motor with compatible protection and heat dissipation according to an embodiment of the present invention;

[0023] Figure 2 Structural schematic diagram of a stator member according to an embodiment of the present invention;

[0024] Figure 3 is Figure 2 Cross-sectional structural schematic diagram of the stator member shown;

[0025] Figure 4 Structural schematic diagram of a bottom cover according to an embodiment of the present invention;

[0026] Figure 5 is Figure 4 Another angle structural schematic diagram of the bottom cover shown;

[0027] Figure 6 Structural schematic diagram of a rotor member according to an embodiment of the present invention;

[0028] Figure 7 is Figure 6 Cross-sectional structural schematic diagram of the rotor member shown;

[0029] Figure 8 is Figure 6 Exploded structural schematic diagram of the rotor member shown;

[0030] Figure 9 is Figure 6An upward view of the rotor component shown;

[0031] Figure 10 The structural schematic diagram of the steel rotating mesh of an embodiment of the present utility model.

[0032] Explanation of the reference numerals in the drawings:

[0033] 10. Motor with compatible protection and heat dissipation; 100. Stator assembly; 200. Rotor assembly; 110. Stator component; 120. Bottom cover; 130. Bottom steel mesh; 1111. Ventilation hole; 131. First through hole; 210. Rotor component; 220. Steel rotating mesh; 2111. Air outlet hole; 221. Second through hole; 121. Large through hole; 122. Striped hole; 211. Centrifugal fan housing; 212. Housing; 213. Rotating shaft; 214. Pressing ring; 215. Magnetic sheet; 2141. Card slot; 111. Stator base; 112. Stator core; 113. Enameled wire group; 114. Bearing; 216. Shaft locking screw; 217. Inductive magnetic block; 140. Magnetic encoder board; 150. Pressing wire piece. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0035] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "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 embodiments of the present utility model 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 utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number 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 embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0037] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0038] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.

[0039] As Figures 1 to 10 shown, a motor 10 compatible with protection and heat dissipation includes a stator assembly 100 and a rotor assembly 200. The stator assembly 100 includes a stator member 110, a bottom cover 120, and a bottom steel mesh 130. The bottom cover 120 is disposed at one end of the stator member 110. A plurality of ventilation holes 1111 are axially formed in the stator member 110. The bottom steel mesh 130 is disposed on the side surface of the bottom cover 120 close to the stator member 110. A plurality of first through holes 131 are formed in the bottom steel mesh 130. The rotor assembly 200 includes a rotor member 210 and a rotating steel mesh 220. The rotor member 210 is rotatably disposed at the end of the stator member 110 away from the bottom cover 120. The rotating steel mesh 220 is disposed on the side surface of the rotor member 210 close to the stator member 110. A plurality of air outlet holes 2111 are radially formed in the rotor member 210. A plurality of second through holes 221 are formed in the rotating steel mesh 220. The second through holes 221 and the first through holes 131 are both hexagonal holes with an inscribed circle diameter of 1 mm. When the rotor assembly 200 rotates relative to the stator assembly 100, air sequentially flows through the first through holes 131, the ventilation holes 1111, the second through holes 221, and the air outlet holes 2111.

[0040] It should be noted that the rotor assembly 200 is rotatably mounted on the stator assembly 100. Specifically, the bottom cover 120 is mounted on one end of the stator member 110 by fasteners. A plurality of ventilation holes 1111 are formed in the stator member 110. The bottom steel mesh 130 is mounted on the side surface of the bottom cover 120 close to the stator member 110. A plurality of first through holes 131 are formed in the bottom steel mesh 130. Further, the rotating steel mesh 220 is mounted at the inner side wall position of the rotor member 210. The rotor member 210 is rotatably mounted at the inner position of the rotor member 210. Thus, when the rotor member 210 continuously rotates relative to the stator member 110, the outside air enters from the bottom cover 120, then flows through the ventilation holes 1111 after passing through the first through holes 131, and finally flows out from the air outlet holes 2111 after passing through the second through holes 221. It should be noted that in the stator member 110, a heat dissipation rib is formed between any two adjacent ventilation holes 1111. During the starting process of the motor, the gas continuously flows through the heat dissipation rib, so the heat generated on the stator member 110 can be quickly taken away, and thus it has good heat dissipation and temperature reduction performance. Further, since both the first through hole 131 and the second through hole 221 are hexagonal holes with an inscribed circle diameter of 1 mm, foreign objects with a diameter equal to or greater than 1 mm can be effectively blocked, so it has good protection performance. Thus, the motor 10 with compatible protection and heat dissipation of the present application can well balance the functions of high protection and high heat dissipation.

[0041] As Figure 4 shown, in one embodiment, a plurality of large through holes 121 are formed in the bottom cover 120, and the bottom steel mesh 130 covers each large through hole 121.

[0042] It should be noted that forming the large through holes 121 in the bottom cover 120 can improve the efficiency of the gas flowing through the bottom cover 120, so that the motor has excellent heat dissipation performance.

[0043] As Figure 4 and Figure 5 shown, in one embodiment, a plurality of stripe holes 122 are further formed in the bottom cover 120. Each stripe hole 122 is circumferentially distributed around the large through hole 121, and the width of each stripe hole 122 is 1 mm.

[0044] Thus, each stripe hole 122 is located on the bottom cover 120, and each stripe hole 122 is circumferentially distributed around the large through hole 121. Thus, the air intake efficiency of the bottom cover 120 can be further enhanced.

[0045] As Figure 1 and Figure 8As described above, in one embodiment, the rotor member 210 includes a centrifugal fan housing 211, a housing 212, and a rotating shaft 213. One end of the rotating shaft 213 is disposed on the centrifugal fan housing 211, the other end of the rotating shaft 213 is rotatably connected to the stator member 110, the housing 212 is disposed on the centrifugal fan housing 211, and the housing 212 non - contactingly covers the outside of the stator member 110. Each air outlet hole 2111 is located on the centrifugal fan housing 211, and the rotating steel mesh 220 is disposed on a side surface of the centrifugal fan housing 211 close to the stator member 110.

[0046] It should be noted that one end of the rotating shaft 213 is fixedly connected to the centrifugal fan housing 211. For example, an installation hole is provided at the axial center position of the centrifugal fan housing 211, and one end of the rotating shaft 213 is in interference fit with the installation hole. In one embodiment, the rotating shaft 213 and the centrifugal fan housing 211 are fixedly bonded by glue to improve the assembly firmness between the rotating shaft 213 and the centrifugal fan housing 211. The housing 212 is fixed on the centrifugal fan housing 211 by fasteners. In this way, when the other end of the rotating shaft 213 is rotatably connected to the stator member 110, the housing 212 covers the outer periphery of the stator member 110, and the housing 212 and the stator member 110 are in a non - contact state. The air outlet hole 2111 is located on the centrifugal fan housing 211, and the rotating steel mesh 220 is installed on a side of the centrifugal fan housing 211 close to the stator member 110.

[0047] As Figure 1 and Figure 8 shown, in one embodiment, the rotor member 210 further includes a retaining ring 214 and a plurality of magnetic sheets 215. The retaining ring 214 is disposed on the inner side wall of the housing 212, each magnetic sheet 215 is spaced apart on the inner side wall of the housing 212, and both ends of each magnetic sheet 215 are respectively connected to the retaining ring 214 and the centrifugal fan housing 211.

[0048] In this way, the retaining ring 214 is used to equally space the magnetic sheets 215 on the inner side wall of the housing 212. In one embodiment, each magnetic sheet 215 is fixedly bonded to the inner side wall of the housing 212 by glue. For example, to enhance the structural strength of the magnetic sheet 215 and the housing 212, concave lines are provided on the inner side wall of the housing 212, so as to enhance the bonding strength of the glue.

[0049] As Figure 8 shown, in one embodiment, a plurality of card slots 2141 are provided on the retaining ring 214, and each magnetic sheet 215 is correspondingly located in each card slot 2141.

[0050] In this way, by providing the card slots 2141 on the retaining ring 214, the magnetic sheets 215 only need to be aligned and installed in the card slots 2141, ensuring that the magnetic sheets 215 are installed at the specified positions. Correspondingly, grooves aligned with the card slots 2141 are also provided on the edge of the centrifugal fan housing 211 close to the housing 212, and the two ends of the magnetic sheets 215 are jointly clamped and fixed by the grooves and the card slots 2141.

[0051] As Figure 2 shown, in one embodiment, the stator member 110 includes a stator base 111 and a plurality of stator cores 112. Each stator core 112 is circumferentially and spacedly arranged on the outer sidewall of the stator base 111, and a group of enameled wires 113 is wound around each stator core 112. The group of enameled wires 113 is distributed at the same height as the magnetic sheet 215, and each ventilation hole 1111 is located on the stator base 111.

[0052] It should be noted that each stator core 112 is circumferentially distributed around the stator base 111, and a group of enameled wires 113 is wound around each stator core 112. Each ventilation hole 1111 is located on the axial direction of the stator base 111. In this way, by passing a changing current through the group of enameled wires 113, a rotating magnetic field can be generated, thereby driving each magnetic sheet 215 to rotate, that is, driving the stator member 210 to rotate relative to the rotor member 110.

[0053] As Figure 1 shown, in one embodiment, a plurality of bearings 114 are coaxially arranged on the stator base 111. The rotating shaft 213 sequentially passes through each bearing 114, and a locking shaft screw 216 is arranged at one end of the rotating shaft 213 away from the centrifugal fan housing 211. The locking shaft screw 216 is used to clamp the rotating shaft 213.

[0054] It should be noted that in order to enable the rotating shaft 213 to rotate stably relative to the stator base 111, a through hole is coaxially opened on the stator base 111, and then the bearing 114 is installed in the through hole. For example, three bearings 114 are installed. After the rotating shaft 213 sequentially passes through the three bearings 114, a locking shaft screw 216 is screwed and fixed at one end of the rotating shaft 213 close to the bottom cover 120. In this way, the rotating shaft 213 is clamped and fixed with the bearing 114 by using the locking shaft screw 216, so that the rotating shaft 213 can rotate reliably and stably relative to the stator base 111.

[0055] As Figure 1 and Figure 5 shown, in one embodiment, an induction magnetic block 217 is arranged at one end of the locking shaft screw 216 away from the rotating shaft 213, and a magnetic encoder plate 140 is arranged on one side surface of the bottom cover 120 close to the rotating shaft 213. The magnetic encoder plate 140 is aligned with the induction magnetic block 217.

[0056] In this way, the magnetic encoder plate 140 can detect the rotation condition of the induction magnetic block 217, so as to accurately measure the rotation angle of the centrifugal fan housing 211 relative to the stator base 111. Since the propeller of the drone is installed on the centrifugal fan housing 211, the precision of the fixed propeller of the motor can be improved.

[0057] In one embodiment, a potting layer is covered on the magnetic encoder plate 140. In this way, the potting layer is used to seal and protect the magnetic encoder plate 140.

[0058] Further, as Figure 5 shown, in one embodiment, a wire pressing piece 150 is further provided on the bottom cover 120. After the wire led out from the magnetic encoder board 140 is pressed and fixed by the wire pressing piece 150, it then extends out from the side hole of the bottom cover 120. In this way, the structural strength between the wire and the magnetic encoder board 140 can be enhanced, and the wire can be prevented from falling off the magnetic encoder board 140.

[0059] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A motor compatible with protection and heat dissipation, characterized in that, Comprising: A stator assembly, the stator assembly includes a stator member, a bottom cover and a bottom steel mesh. The bottom cover is arranged at one end of the stator member. A plurality of ventilation holes are axially formed in the stator member. The bottom steel mesh is arranged on the side surface of the bottom cover close to the stator member, and a plurality of first through holes are formed in the bottom steel mesh; and A rotor assembly, the rotor assembly includes a rotor member and a rotating steel mesh. The rotor member is rotatably arranged at the end of the stator member away from the bottom cover. The rotating steel mesh is arranged on the side surface of the rotor member close to the stator member. A plurality of air outlet holes are radially formed in the rotor member. A plurality of second through holes are formed in the rotating steel mesh. Both the second through holes and the first through holes are hexagonal holes with an inscribed circle diameter of 1 mm; When the rotor assembly rotates relative to the stator assembly, air sequentially flows through the first through holes, the ventilation holes, the second through holes and the air outlet holes.

2. The motor with compatible protection and heat dissipation according to claim 1, wherein A plurality of large through holes are formed in the bottom cover, and the bottom steel mesh covers each of the large through holes.

3. The motor with compatible protection and heat dissipation according to claim 2, wherein A plurality of stripe holes are further formed in the bottom cover. Each of the stripe holes is circumferentially distributed around the large through holes, and the width of each of the stripe holes is 1 mm.

4. The motor with compatible protection and heat dissipation according to claim 1 or 2, characterized in that, The rotor member includes a centrifugal fan shell, a housing and a rotating shaft. One end of the rotating shaft is arranged on the centrifugal fan shell, the other end of the rotating shaft is rotatably connected to the stator member, the housing is arranged on the centrifugal fan shell, and the housing non-contactingly wraps around the outside of the stator member. Each of the air outlet holes is located on the centrifugal fan shell, and the rotating steel mesh is arranged on the side surface of the centrifugal fan shell close to the stator member.

5. The motor with compatible protection and heat dissipation according to claim 4, characterized in that, The rotor member further includes a retaining ring and a plurality of magnetic sheets. The retaining ring is arranged on the inner side wall of the housing, and each of the magnetic sheets is spacedly arranged on the inner side wall of the housing, and both ends of each of the magnetic sheets are respectively connected to the retaining ring and the centrifugal fan shell.

6. The motor with compatible protection and heat dissipation according to claim 5, characterized in that, A plurality of card slots are formed in the retaining ring, and each of the magnetic sheets is correspondingly located in each of the card slots.

7. The motor with compatible protection and heat dissipation according to claim 5, wherein, The stator member includes a stator base and a plurality of stator cores. Each of the stator cores is circumferentially spacedly arranged on the outer side wall of the stator base, and an enameled wire group is wound on each of the stator cores. And the enameled wire group is distributed at the same height as the magnetic sheets. Each of the ventilation holes is located on the stator base.

8. The motor with compatible protection and heat dissipation according to claim 7, wherein A plurality of bearings are coaxially arranged on the stator base. The rotating shaft sequentially passes through each of the bearings, and a locking shaft screw is arranged at the end of the rotating shaft away from the centrifugal fan shell. The locking shaft screw is used to clamp the rotating shaft.

9. The motor with compatible protection and heat dissipation according to claim 8, characterized in that, An induction magnetic block is arranged at the end of the locking shaft screw away from the rotating shaft, and a magnetic encoder plate is arranged on the side surface of the bottom cover close to the rotating shaft. The magnetic encoder plate is aligned with the induction magnetic block.

10. The motor with compatible protection and heat dissipation according to claim 9, characterized in that, A potting layer covers the magnetic encoder plate.

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