Motor and unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a motor which comprises a stator assembly. The rotor assembly comprises a machine shell, a rotor main body and a rotor fan, the rotor main body is rotationally connected to the stator assembly, the rotor main body is arranged in the machine shell, the rotor fan is connected to the rotor main body, the rotor fan is provided with blades, and the blades are used for rotating the rotor main body when the rotor assembly rotates. And the air in the machine shell is pushed to flow towards the outside, so that air exchange is formed between the outside and the inside of the machine shell. When the motor works, the rotor assembly rotates relative to the stator assembly, and the blades push the gas in the casing to be discharged to the outside, so that gas exchange is formed between the outside and the inside of the casing, the casing achieves a heat dissipation effect, and the risk that the temperature of the casing is too high to scald a user is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a motor and a unmanned aerial vehicle. Background Art

[0002] The motor of the drone includes a housing, a rotor assembly and a stator assembly. The housing is arranged inside the housing, the rotor assembly and the stator assembly are both arranged inside the housing, and the stator assembly is fixed to the housing, and the rotor assembly is rotatably connected to the housing. By energizing the motor, the rotor assembly can rotate relative to the housing, thereby realizing the rotation of the propeller blades of the drone driven by the motor.

[0003] However, in the process of implementing the utility model, the inventors found that when the motor drives the blades of the drone to rotate for a long time, the heat generated by the rotor assembly and the stator assembly is dissipated to the outside through the casing, causing the casing to easily overheat and burn the user. Utility Model Content

[0004] The utility model provides a motor, which has good heat dissipation performance.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a motor, including a stator assembly; a rotor assembly, including a casing, a rotor body and a rotor fan, the rotor body is rotatably connected to the stator assembly, the rotor body is arranged in the casing, the rotor fan is connected to the rotor body, and the rotor fan is provided with blades, and the blades are used to push the gas in the casing to flow toward the outside when the rotor assembly rotates, so as to form a gas exchange between the outside and the casing.

[0006] Optionally, the rotor assembly is provided with an air guide hole, and the air guide hole is used to guide the gas exhausted from the casing to blow toward the outer wall of the casing.

[0007] Optionally, the casing is provided with a through hole, part of the stator assembly is arranged in the through hole, the rotor fan is located at an opening of the through hole, and the rotor fan is bent toward the casing to form a bent portion, and the bent portion is used to change the direction of exhaust airflow in the casing so that the casing and the bent portion together enclose the air guide hole.

[0008] Optionally, the casing is provided with a plurality of heat dissipation ribs, and the plurality of heat dissipation ribs are arranged on the outer wall of the casing.

[0009] Optionally, the stator assembly includes a motor rear cover and a stator seat, the stator seat is fixed to the motor rear cover, and the stator seat is provided with heat dissipation holes, and part of the gas entering the casing from the outside is discharged after passing through the heat dissipation holes in sequence.

[0010] Optionally, the stator assembly further includes a stator core and a winding, the stator core being sleeved on the stator seat, a plurality of stator teeth being arranged at intervals along the winding direction of the stator core, the winding being wound around the stator teeth, and a gap being provided between any two adjacent stator teeth, the gap being used for another part of the gas entering the casing from the outside to be discharged after passing through the gap.

[0011] Optionally, the rotor body includes a rotor bracket, a shaft and a plurality of magnets, the shaft is rotatably connected to the stator assembly, the rotor bracket is connected to the shaft, the rotor fan is installed on the rotor bracket, and the plurality of magnets are arranged at intervals along the circumferential direction of the rotor bracket.

[0012] Optionally, the motor further comprises a bearing, an inner ring of the bearing is connected to the shaft, and an outer ring of the bearing is connected to the stator assembly.

[0013] Optionally, the rotor bracket includes a fixing portion and a plurality of mounting ribs, the fixing portion is connected to the shaft, and the mounting ribs are arranged at intervals along the circumferential direction of the fixing portion; the rotor fan is provided with a plurality of clamping grooves, one mounting rib corresponds to one clamping groove, and the mounting rib is inserted into the clamping groove.

[0014] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a drone, comprising a drone body and the above motor, wherein the motor is arranged on the drone body.

[0015] The beneficial effects of the embodiments of the present application are as follows: a motor is provided, the motor includes a stator assembly and a rotor assembly, the rotor assembly includes a casing, a rotor body and a rotor fan, the rotor body is rotatably connected to the stator assembly, the rotor body is arranged in the casing, the rotor fan is connected to the rotor body, and the rotor fan is provided with blades, and the blades are used to push the gas in the casing to flow toward the outside when the rotor assembly rotates, so as to form a gas exchange between the outside and the casing. When the motor is working, the rotor assembly rotates relative to the stator assembly, and the blades push the gas in the casing to be discharged toward the outside, so as to form a gas exchange between the outside and the casing, so that the casing can achieve the effect of heat dissipation, and further reduce the risk of the casing being easily overheated and scalding the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0017] Figure 1This is a one-view diagram of the motor provided by the utility model;

[0018] Figure 2 This is an exploded view of the motor provided by the utility model from another perspective;

[0019] Figure 3 This is a cross-sectional view of the motor provided by the utility model from another perspective;

[0020] Figure 4 This is a schematic diagram of the assembly of the rotor fan and the rotor bracket provided by the utility model;

[0021] Figure 5 This is an angle view of a rotor fan provided by the utility model;

[0022] Figure 6 This is an angle view of a rotor bracket provided by the utility model.

[0023] Reference numerals:

[0024] 100, motor; 10, rotor assembly; 11, housing; 11a, through hole; 111, heat dissipation rib; 12, rotor body; 121, rotor bracket; 122, shaft; 123, magnet; 1211, fixing part; 1212, mounting rib; 1213, collar; 1214, claw; 131, blade; 132, bending part; 13a, clamping groove; 14, screw; 10a, air guide hole; 20, stator assembly; 21, motor back cover; 21a, air inlet hole; 22, stator seat; 22a, heat dissipation hole; 23, stator core; 231, stator tooth; 23a, gap; 24, winding; 30, bearing. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0027] See also Figure 1-Figure 2 The motor 100 includes a rotor assembly 10 and a stator assembly 20. The rotor assembly 10 is rotatably connected to the stator assembly 20, and the rotor assembly 10 is connected to an external device or component. When the motor 100 is working, the rotor assembly 10 can rotate relative to the stator assembly 20, and the rotor assembly 10 further drives the external device or component to rotate.

[0028] The rotor assembly 10 is shown in FIG. Figure 1 The rotor assembly 10 includes a housing 11, a rotor body 12 and a rotor fan 13. The rotor body 12 and the rotor fan 13 are both arranged in the housing 11, the rotor body 12 is rotatably connected to the stator assembly 20, the rotor fan 13 is connected to the rotor body 12, and the rotor fan 13 is provided with blades 131. When the rotor assembly 10 rotates, the gas in the housing 11 is pushed to flow toward the outside, so that the outside and the housing 11 form a gas exchange, thereby achieving heat dissipation in the housing 11 and heat dissipation of the housing 11. In addition, the rotor assembly 10 is provided with an air guide hole 10a, which guides the gas discharged from the housing 11 to blow toward the outer wall of the housing 11. Optionally, the above-mentioned casing 11 is provided with a through hole 11a, and the rotor fan 13 is located at a hole opening of the through hole 11a. The rotor fan 13 is bent toward the casing 11 to form a bending portion 132, and the bending portion 132 is used to change the direction of the exhaust air flow in the casing 11, so that the casing 11 and the bending portion 132 are jointly enclosed to form an air guide hole 10a.

[0029] The housing 11 further comprises a plurality of heat dissipation ribs 111 which are arranged at intervals on the outer wall of the housing 11 . The heat dissipation ribs 111 can increase the heat dissipation area of ​​the housing 11 , and the air is blown toward the outer wall of the housing 11 through the air guide holes 10a to improve the heat dissipation effect of the housing 11 .

[0030] For stator assembly 20, see Figure 2-Figure 3 The stator assembly 20 includes a motor rear cover 21 and a stator seat 22. The stator seat 22 is fixed to the motor rear cover 21, and the motor rear cover 21 is disposed at another opening of the through hole 11a of the housing 11. The stator seat 22 is provided with a heat dissipation hole 22a. Part of the gas entering the housing 11 from the outside passes through the heat dissipation hole 22a in sequence and is discharged, so that the stator assembly 20 has a good heat dissipation effect. Optionally, the motor rear cover 21 is provided with an air inlet hole 21a.

[0031] The stator assembly 20 further includes a stator core 23 and a winding 24. The stator core 23 is sleeved on the stator seat 22. Along the winding direction of the stator core 23, the stator core 23 is provided with a plurality of stator teeth 231 at intervals. The winding 24 is wound around the stator teeth 231. There is a gap 23a between any two adjacent stator teeth 231. When the motor 100 is working, another part of the gas entering the housing 11 from the outside passes through the gap 23a and is discharged, thereby taking away the heat in the housing 11.

[0032] The rotor body 12 is shown in FIG. Figure 3-Figure 6 The rotor body 12 includes a rotor support 121, a shaft 122 and a plurality of magnets 123. The shaft 122 is rotatably connected to the stator seat 22 of the stator assembly 20, the rotor support 121 is connected to the shaft 122, the rotor fan 13 is mounted on the rotor support 121, and the plurality of magnets 123 are arranged at intervals along the circumferential direction of the rotor support 121. Optionally, the motor 100 further includes a bearing 30, the inner ring of the bearing 30 is connected to the shaft 122, and the outer ring of the bearing 30 is connected to the stator assembly 20, so as to realize the rotatable connection between the shaft 122 and the stator assembly 20. In addition, the shaft 122 is provided with a screw hole 122a, and the rotor assembly 10 further includes a screw 14, the screw rod of the screw 14 is screwed to the screw hole 122a, and the nut of the screw abuts against the inner ring of the bearing 30, and the screw 14 has the function of limiting the bearing 30 in the axial direction.

[0033] The rotor support 121 includes a fixing portion 1211, a plurality of mounting ribs 1212 and a collar 1213. The fixing portion 1211 is connected to the shaft 122, the mounting ribs 1212 are arranged at intervals along the circumferential direction of the fixing portion 1211, and one end of the mounting rib 1212 is connected to the fixing portion 1211, and the other end of the mounting rib 1212 is connected to the inner ring of the collar 1213, a plurality of magnets 123 are arranged at intervals along the circumferential direction of the collar 1213, and the collar 1213 is provided with a plurality of claws 1214 along the circumferential direction of the collar 1213, one claw 1214 corresponds to one magnet 123, and the magnet 123 Installed on the claw 1214, the rotor fan 13 is provided with a plurality of clamping grooves 13a, and the plurality of clamping grooves 13a are arranged at intervals along the rotation direction of the rotor assembly 10, and at least one blade 131 is arranged between any two adjacent clamping grooves 13a, a mounting rib 1212 corresponds to a clamping groove 13a, and the mounting rib 1212 is inserted into the clamping groove 13a, so that the rotor fan 13 is stably connected to the rotor bracket 121, thereby reducing the risk of the rotor fan 13 being separated from the rotor bracket 121.

[0034] In the embodiment of the present application, a motor 100 is provided. The motor 100 includes a stator assembly 20 and a rotor assembly 10. The rotor assembly 10 includes a housing 11, a rotor body 12 and a rotor fan 13. The rotor body 12 is rotatably connected to the stator assembly 20. The rotor body 12 is disposed in the housing 11. The rotor fan 13 is connected to the rotor body 12. The rotor fan 13 is provided with blades 131. The blades 131 are used to push the gas in the housing 11 to flow toward the outside when the rotor assembly 10 rotates, so that the outside and the inside of the housing 11 form a gas exchange. When the motor 100 is working, the rotor assembly 10 rotates relative to the stator assembly 20, and the blades 131 push the gas in the housing 11 to be discharged toward the outside, so that the outside and the inside of the housing 11 form a gas exchange, so that the housing 11 achieves a heat dissipation effect, and further reduces the risk of the housing 11 being easily overheated and scalding the user.

[0035] The utility model also provides an embodiment of a drone, wherein the drone comprises a drone body and the motor 100, wherein the motor 100 is arranged on the drone body. The specific structure and function of the motor 100 can be found in the above embodiment, and will not be described in detail here.

[0036] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A motor, characterized in that: include: stator assembly; The rotor assembly includes a casing, a rotor body and a rotor fan. The rotor body is rotatably connected to the stator assembly, the rotor body is arranged in the casing, and the rotor fan is connected to the rotor body. The rotor fan is provided with blades. The blades are used to push the gas in the casing to flow toward the outside when the rotor assembly rotates, so as to form a gas exchange between the outside and the casing.

2. The motor according to claim 1, characterized in that: The rotor assembly is provided with an air guide hole, and the air guide hole is used to guide the gas exhausted from the casing to blow toward the outer wall of the casing.

3. The motor according to claim 2, characterized in that: The casing is provided with a through hole, part of the stator assembly is arranged in the through hole, the rotor fan is located at an opening of the through hole, and the rotor fan is bent toward the casing to form a bent portion, and the bent portion is used to change the direction of exhaust airflow in the casing so that the casing and the bent portion together enclose the air guide hole.

4. The motor according to claim 1, characterized in that: The housing is provided with a plurality of heat dissipation ribs, and the plurality of heat dissipation ribs are arranged on the outer wall of the housing.

5. The motor according to claim 1, characterized in that: The stator assembly includes a motor rear cover and a stator seat, the stator seat is fixed to the motor rear cover, and the stator seat is provided with heat dissipation holes, and part of the gas entering the casing from the outside is discharged after passing through the heat dissipation holes in sequence.

6. The motor according to claim 5, characterized in that: The stator assembly also includes a stator core and a winding. The stator core is sleeved on the stator seat. Along the winding direction of the stator core, the stator core is provided with a plurality of stator teeth at intervals. The winding is wound around the stator teeth. There is a gap between any two adjacent stator teeth. The gap is used for another part of the gas entering the casing from the outside to be discharged after passing through the gap.

7. The motor according to claim 1, characterized in that: The rotor body includes a rotor support, a shaft and a plurality of magnets, the shaft is rotatably connected to the stator assembly, the rotor support is connected to the shaft, the rotor fan is installed on the rotor support, and the plurality of magnets are arranged at intervals along the circumferential direction of the rotor support.

8. The motor according to claim 7, characterized in that: The motor further comprises a bearing, wherein an inner ring of the bearing is connected to the shaft, and an outer ring of the bearing is connected to the stator assembly.

9. The motor according to claim 7, characterized in that: The rotor support comprises a fixing portion and a plurality of mounting ribs, wherein the fixing portion is connected to the shaft, and the mounting ribs are arranged at intervals along a circumferential direction of the fixing portion; The rotor fan is provided with a plurality of clamping grooves, one mounting rib corresponds to one clamping groove, and the mounting rib is plugged into the clamping groove.

10. A drone, characterized in that: It comprises a drone body and a motor as described in any one of claims 1 to 9, wherein the motor is arranged on the drone body.

Images