Motor and drying device

Abstract

A motor (10) and a drying device (100). The motor (10) comprises a stator (11), a rotor (12) and an electrical connection assembly (13). The rotor (12) can generate an airflow flowing in an air duct (111) of the stator (11). The electrical connection assembly (13) comprises an electrically connected first connection plate (131) and a second connection plate (132), wherein the first connection plate (131) is electrically connected to the stator (11), and the second connection plate (132) extends from the outer side of the stator (11) across the air duct (111).

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to a motor and a drying device. Background Art

[0002] Generally, a drying device, such as a hair dryer, uses a resistance wire to heat the air flow sucked by a motor, and then blows out the heated hair and surrounding air to achieve the purpose of drying the hair. In order to speed up the drying speed, a hair dryer usually uses a high-speed motor, such as a motor with a rotation speed of 100k rpm / revolution per minute.

[0003] The high-speed motor includes a stator, which includes two coaxial cylinders inside and outside and a stator core connected to the inner cylinder. The area between the inner and outer cylinders forms an "air duct". When powering the motor, the stator core of the motor needs to be connected to the external circuit board through a wire. The wire will pass through the air duct from the outside of the outer cylinder to the stator core on the inner cylinder. However, since the wire has a certain flexibility and width, and the wind speed in the air duct of the high-speed motor is relatively high, the airflow passing through the wire will generate greater noise and vibration, resulting in the mutual influence of the wire and the wind in the air duct, which is not conducive to the noise reduction and quality control of the high-speed motor. Summary of the invention

[0004] The embodiments of the present application provide a motor and a drying device.

[0005] An embodiment of the present application provides a motor. The motor includes a stator, a rotor, and an electrical connection assembly. The stator is provided with an air duct, the rotor is inserted through the stator, the rotor can rotate in the stator and generate airflow, and the airflow can flow in the air duct. The electrical connection assembly is used to electrically connect the stator with an external element, and the electrical connection assembly includes a first connection plate and a second connection plate, the first connection plate is electrically connected to the stator, the second connection plate is electrically connected to the first connection plate, and extends from the outside of the stator across the air duct, and the extended portion of the second connection plate is used to electrically connect to the external element through a conductor.

[0006] An embodiment of the present application provides a drying device. The drying device includes a housing and a motor, and the motor is accommodated in the housing. The motor includes a stator, a rotor, and an electrical connection component. The stator is provided with an air duct, and the rotor is inserted into the stator. The rotor can rotate in the stator and generate airflow, and the airflow can flow in the air duct. The electrical connection component is used to electrically connect the stator with an external element, and the electrical connection component includes a first connecting plate and a second connecting plate, the first connecting plate is electrically connected to the stator, the second connecting plate is electrically connected to the first connecting plate, and extends from the outside of the stator across the air duct, and the extended portion of the second connecting plate is used to electrically connect to the external element through a conductor.

[0007] The motor and drying device in the embodiment of the present application are provided with an electrical connection assembly in the motor for electrically connecting the stator and the external element, and the second connection plate in the electrical connection assembly extends from the outside of the stator across the air duct. Since the second connection plate with a certain hardness is not opposite to the air duct, it can avoid the airflow in the air duct from generating large noise and vibration when passing through the second connection plate while electrically connecting the stator and the external element, and can also keep the position and state of the second connection plate in the air duct unchanged. That is, the second connection plate and the airflow in the air duct will not affect each other, which is beneficial to the noise reduction and quality control of the motor.

[0008] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0010] Figure 1 is a three-dimensional assembly schematic diagram of a motor according to certain embodiments of the present application;

[0011] Figure 2 yes Figure 1 A three-dimensional exploded schematic diagram of the motor shown;

[0012] Figure 3 is a three-dimensional assembly schematic diagram of a motor in some embodiments of the present application from another perspective;

[0013] Figure 4 yes Figure 3 A schematic cross-sectional view of the motor shown;

[0014] Figure 5 is a schematic diagram of a cross section of a second connecting plate of a motor according to an embodiment of the present application;

[0015] Figure 6 is a schematic diagram of a cross section of a second connecting plate of a motor according to another embodiment of the present application;

[0016] Figure 7 is a schematic diagram of a cross section of a second connecting plate of a motor according to yet another embodiment of the present application;

[0017] Figure 8 It is a schematic diagram of the structure of a drying device in certain embodiments of the present application. DETAILED DESCRIPTION

[0018] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. The same or similar reference numerals in the accompanying drawings represent the same or similar elements or elements with the same or similar functions.

[0019] In addition, the embodiments of the present application described below in conjunction with the drawings are exemplary and are only used to explain the embodiments of the present application and should not be construed as limiting the present application.

[0020] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] Existing drying devices, such as hair dryers, usually use a resistance wire to heat the airflow sucked by the motor, and then blow out a large amount of high-temperature air to achieve the purpose of drying. In order to speed up the drying speed, the drying device usually uses a high-speed motor. The motor includes a stator, which includes two coaxial cylinders inside and outside and a stator core connected to the inner cylinder. The area between the inner and outer cylinders forms an "air duct". When the motor is powered, it is necessary to connect the stator core of the motor and the external circuit board through a wire. The wire will pass through the air duct from the outside of the outer cylinder to the stator core on the inner cylinder. However, on the one hand, since the wire has a certain flexibility and width, and the wind speed of the air duct of the high-speed motor is high, the airflow passing through the wire will generate large noise and vibration; on the other hand, since the wires in different motors are different, even if the same motor is at different times, under the influence of the wind in the air duct, the position and state of the wire in the air duct are different, which may affect the flow direction of the wind in the air duct. Therefore, under this configuration, the wire and the wind in the air duct affect each other, which is not conducive to the noise reduction and quality control of the high-speed motor.

[0022] See also Figure 1 and Figure 2, an embodiment of the present application provides a motor 10. The motor 10 includes a stator 11, a rotor 12 and an electrical connection component 13. The stator 11 is provided with an air duct 111, and the rotor 12 is penetrated by the stator 11. The rotor 12 can rotate in the stator 11 and generate airflow, and the airflow can flow in the air duct 111. The electrical connection component 13 is used to electrically connect the stator 11 with an external component. The electrical connection component 13 includes a first connecting plate 131 and a second connecting plate 132, the first connecting plate 131 is electrically connected to the stator 11, the second connecting plate 132 is electrically connected to the first connecting plate 131, and extends from the outside of the stator 11 across the air duct 111, and the extended portion of the second connecting plate 132 is used to electrically connect to the external component through the conductor 14.

[0023] The motor 10 in the embodiment of the present application is provided with an electrical connection assembly 13 for electrically connecting the stator 11 and the external element, and the second connection plate 132 in the electrical connection assembly 13 extends from the outside of the stator 11 across the air duct 111. Since the second connection plate 132 with a certain hardness is not a flexible wire opposite to the air duct 111, it can avoid the airflow in the air duct 111 passing through the second connection plate 132 to generate large noise and vibration while electrically connecting the stator 11 and the external element, and can also keep the position and state of the second connection plate 132 in the air duct 111 unchanged. That is, the second connection plate 132 and the airflow in the air duct 111 will not affect each other, which is beneficial to the noise reduction and quality control of the motor 10.

[0024] The following is a further description with reference to the accompanying drawings.

[0025] See also Figure 1 and Figure 2 The motor 10 includes a stator 11, a rotor 12 and an electrical connection assembly 13. The rotor 12 is disposed in the stator 11, and the rotor 12 can rotate in the stator 11 and generate airflow. The electrical connection assembly 13 is used to electrically connect the stator 11 with an external component.

[0026] Specifically, see Figure 2 The stator 11 includes an air duct 111, an outer cylinder 112, an inner cylinder 113 and a guide vane 114. The inner cylinder 113 is received in the outer cylinder 112, and an air duct 111 is formed between the inner cylinder 113 and the outer cylinder 112. The airflow generated by the rotation of the rotor 12 can flow in the air duct 111. It should be noted that in some embodiments, the inner cylinder 113 and the outer cylinder 112 are two coaxial cylinders, for example, the inner cylinder 113 and the outer cylinder 112 are two coaxial cylindrical cylinders (such as Figure 2As shown). Since the inner cylinder 113 and the outer cylinder 112 are coaxial, the gap between the inner cylinder 113 and the outer cylinder 112 is distributed relatively evenly, which is conducive to the airflow generated by the rotation of the rotor 12 to flow in the air duct 111 between the inner cylinder 113 and the outer cylinder 112. Of course, in other embodiments, the inner cylinder 113 and the outer cylinder 112 may also be coaxial, for example, the inner cylinder 113 and the outer cylinder 112 are eccentrically arranged, in which case, the installation accuracy requirements of the inner cylinder 113 and the outer cylinder 112 are not high, and the installation is convenient. The inner cylinder 113 and the outer cylinder 112 are also not limited to the cylinders in this embodiment, and can also be prisms with polygonal cross sections, such as a quadrangular prism with a quadrilateral cross section, a pentagonal prism with a pentagonal cross section, etc. The shape of the cross section of the inner cylinder 113 and the shape of the cross section of the outer cylinder 112 can be the same, such as a circle in the present embodiment, or they can be different, for example, the shape of the cross section of the inner cylinder 113 is a circle, and the shape of the cross section of the outer cylinder 112 is a regular pentagon, which can facilitate the adaptation with other external parts.

[0027] The guide vane 114 is located in the air duct 111, and the guide vane 114 is connected to the inner cylinder 113 and the outer cylinder 112. For example, one end of the guide vane 114 is connected to the outer side wall of the inner cylinder 113, and the other end is connected to the inner side wall of the outer cylinder 112. The guide vane 114 is used to guide the airflow in the air duct 111. It should be noted that, in some embodiments, the number of the guide vane 114 may be one. In other embodiments, the number of the guide vanes 114 may be multiple (multiple in this article means greater than or equal to two). Arranging multiple guide vanes 114 for guiding the airflow in the air duct 111 is conducive to outputting the airflow in the air duct 111 to the outside of the motor 10.

[0028] In this embodiment, the plurality of guide vanes 114 are evenly distributed around the central axis of the inner cylinder 113, so that the airflow flowing through the air duct 111 can be evenly guided out from the outlet of the air duct 111, so that the force of the wind felt by the user in each area of ​​the outlet of the air duct 111 is even. In other embodiments, the plurality of guide vanes 114 are not evenly distributed around the central axis of the inner cylinder 113, but may be concentrated in the left half area of ​​the air duct 111, or in the half area, so as to concentrate the airflow to the left or right side of the user.

[0029] In this embodiment, the opposite ends of the plurality of guide vanes 114 are respectively fixedly connected to the outer wall of the inner tube 113 and the inner wall of the outer tube 112. In other words, the passage between the guide vanes 114 will not change, and the wind guiding structure of such guide vanes 114 is relatively stable. In other embodiments, at least one guide vane 114 is movably connected to the inner cylinder 113 and the outer cylinder 112. For example, one end of the guide vane 114 is rotatably connected to the outer wall of the inner cylinder 113 through a first rotating shaft, and the other end is installed in a track on the inner wall of the outer cylinder 112 and can move along the track. When one end of the guide vane 114 rotates around the first rotating shaft, the other end rotates along the track on the outer cylinder 112 (similar to a shutter), thereby changing the channel between the guide vanes 114 (the shape and space size are changed), thereby changing the direction of the airflow guided by the guide vanes 114, and the guide vanes 114 can be adjusted to guide the airflow to the direction desired by the user by controlling the angle of rotation of one end of the guide vane 114 around the first rotating shaft, so as to focus on heating the area that the user wants to heat, thereby better meeting the personalized needs of the user.

[0030] See also Figure 2 and Figure 4 The rotor 12 includes a rotating shaft 121, a rotor cover 122 and a fan blade 123. The rotating shaft 121 is rotatably mounted in the inner cylinder 113 of the stator 11 through the bearing 18. For example, the inner cylinder 113 is sleeved on the outer side of the bearing 18, the rotating shaft 121 is penetrated by the bearing 18, and the rotating shaft 121 can rotate in the inner cylinder 113.

[0031] The rotating shaft 121 includes a first end 1211 and a second end 1212 which are arranged opposite to each other. The first end 1211 is accommodated in the inner cylinder 113, and the second end 1212 can be exposed from the inner cylinder 113. The rotor cover 122 is arranged at the second end 1212 of the rotating shaft 121. Specifically, the rotor cover 122 is sleeved on the portion of the second end 1212 of the rotating shaft 121 which is exposed from the inner cylinder 113. The fan blades 123 are mounted on the peripheral wall of the rotor cover 122, and the fan blades 123 are located between the inner cylinder 113 and the outer cylinder 112. In this way, the rotor cover 122 and the fan blades 123 can rotate together with the rotating shaft 121 to generate airflow, and the airflow can flow in the air duct 111 between the inner cylinder 113 and the outer cylinder 112.

[0032] It should be noted that, in some embodiments, the number of fan blades 123 can be multiple, and the multiple fan blades 123 can be evenly distributed on the peripheral wall of the rotor cover 122. Any one of the connection between the rotor cover 122 and the rotating shaft 121 and the connection between the fan blades 123 and the rotor cover 122 can be glued with anaerobic glue or other adhesives, or can be connected by snap-fitting or welding, or a combination of multiple connection methods, which is not limited here.

[0033] In some embodiments, see Figure 2 and Figure 4 The motor 10 further includes a coil 16 and a magnet 17. The coil 16 is disposed inside the inner cylinder 113. The electrical connection assembly 13 is electrically connected to the coil 16 to energize the coil 16. The magnet 17 is disposed at the first end 1211 of the rotating shaft 121 and is opposite to the coil 16. The coil 16 and the magnet 17 can interact with each other to drive the rotating shaft 121 to rotate.

[0034] Specifically, in one example, the motor 10 includes a plurality of coils 16, and the stator 11 also includes an iron core 115 housed in the inner cylinder 113. The iron core 115 includes an annular portion 1151 and a plurality of sleeve portions 1152 extending radially from the inner wall of the annular portion 1151 to the center of the annular portion 1151. The plurality of coils 16 correspond to the plurality of sleeve portions 1152, and the coils 16 are sleeved on the corresponding sleeve portions 1152. The electrical connection assembly 13 passes current through the coils 16, and the coils 16 and the corresponding sleeve portions 1152 generate a changing magnetic field. The magnet 17 is driven by the magnetic field to drive the rotor cover 122 and the blades 123 to rotate (the magnet 17 drives the shaft 121 to rotate, and the shaft 121 then drives the rotor cover 122 and the blades 123 to rotate).

[0035] See also Figure 2 and Figure 4 The electrical connection assembly 13 includes a first connection plate 131 and a second connection plate 132. The first connection plate 131 is electrically connected to the stator 11, and the second connection plate 132 is electrically connected to the first connection plate 131, and extends from the outside of the stator 11 across the air duct 111. The extended portion of the second connection plate 132 is used to be electrically connected to an external component through a conductor 14. Since the second connection plate 132 with a certain hardness is not a flexible wire opposite to the air duct 111, it can avoid the airflow in the air duct 111 passing through the second connection plate 132 to generate large noise and vibration while electrically connecting the stator 11 and the external component, and can also keep the position and state of the second connection plate 132 in the air duct 111 unchanged. That is, the second connection plate 132 and the airflow in the air duct 111 will not affect each other, which is beneficial to the noise reduction and quality control of the motor 10. It should be noted that the number of the second connecting plates 132 in the motor 10 can be one or more (for example, 2, 3, 4, 5 or even more), which is not limited here.

[0036] Specifically, the first connecting plate 131 includes a first surface 1311 and a second surface 1312 facing each other, and the first surface 1311 is electrically connected to the side of the stator 11 away from the fan blades 123. For example, in some embodiments, the first surface 1311 is electrically connected to the coil 16 of the stator 11 to achieve electrical connection between the coil 16 and the electrical connection component 13. The first connecting plate 131 can be any one of a rigid circuit board, a flexible circuit board, or a rigid-flexible circuit board. It should be noted that, in some embodiments, the airflow in the air duct 111 flows from the fan blades 123 to the first connecting plate 131, that is, the airflow in the air duct 111 flows along the stator 11 toward the second connecting plate 132.

[0037] It should be noted that, in some embodiments, a plurality of protrusions 1153 are provided on one side of the iron core 115 close to the first connecting plate 131, and mounting holes 1313 are provided at positions corresponding to the first connecting plate 131 and the protrusions 1153, and the protrusions 1153 and the mounting holes 1313 are combined with each other to mechanically connect the first connecting plate 131 and the stator 11. Of course, in some embodiments, the first connecting plate 131 can also be electrically connected to the coil 16 through the protrusions 1153. At this time, the number and position of the protrusions 1153 can correspond to the number and position of the coils 16, so that by setting different wiring methods on the first connecting plate 131, different currents can be passed through different coils 16 to generate a changing magnetic field.

[0038] The second connection plate 132 is used to electrically connect the first connection plate 131 and the conductor 14. Specifically, one end of the second connection plate 132 is electrically connected to the conductor 14, and the other end is electrically connected to the first connection plate 131.

[0039] In some embodiments, Figure 2 and Figure 4 As shown, the second connecting plate 132 is electrically connected to the first surface 1311 of the first connecting plate 131. Since the second connecting plate 132 is electrically connected to the first surface 1311 of the first connecting plate 131, compared with the second connecting plate 132 being electrically connected to the second surface 1312 of the first connecting plate 131, the second connecting plate 132 is closer to the stator 11, so that the longitudinal dimension of the motor 10 can be reduced, and the second connecting plate 132 can also be better hidden and protected, and is not easy to collide with other parts and be damaged. Of course, in some embodiments, the second connecting plate 132 can also be electrically connected to the second surface 1312 of the first connecting plate 131, which is not limited here. The following embodiments are all described by taking the second connecting plate 132 being electrically connected to the first surface 1311 of the first connecting plate 131 as an example.

[0040] For example, in some embodiments, the second connecting plate 132 is electrically connected to the first connecting plate 131 through a welding point. In this way, the electrical connection between the second connecting plate 132 and the first connecting plate 131 can be achieved, and the mechanical connection between the two can also be achieved. In other words, there is no need to set up other mechanical structures, and the first connecting plate 131 and the second connecting plate 132 can be connected, which reduces the complexity of the structure of the motor 10 and facilitates the assembly of the motor 10. For example, in one example, the second connecting plate 132 is welded to the first connecting plate 131 through perforations. Specifically, a plurality of welding portions 13201 are provided on one side where the second connecting plate 132 is connected to the first connecting plate 131, and a plurality of welding holes 1314 (which can be through holes or blind holes) corresponding to the welding portions 13201 are opened on the first connecting plate 131. A plurality of welding portions 13201 are combined with corresponding welding holes 1314, and the welding portions 13201 are welded in the corresponding welding holes 1314 to form welding spots, so as to realize the electrical and mechanical connection between the second connecting plate 132 and the first connecting plate 131. In this way, the longitudinal dimension of the motor 10 can be further reduced. For another example, in one example, the second connecting plate 132 can also be welded to the first connecting plate 131 by surface welding, that is, the first connecting plate 131 does not have welding holes 1314, but directly welds the welding portions 13201 to the first surface 1311 by welding technology. This welding does not require the previous hole-making process, so that the connection between the second connecting plate 132 and the first connecting plate 131 is simpler and easier.

[0041] It should be noted that, no matter whether the second connecting plate 132 is welded to the first connecting plate 131 by perforation welding or surface welding, the number of welding points between the two is related to the type of the motor 10. For example, if the motor is an n-phase brushless motor, the number of welding points is n or a multiple of n. For example, when the motor 10 is a three-phase brushless motor, that is, when three-phase alternating current is passed through the coil 16, the number of welding points is 3 or a multiple of 3 (for example, the number of welding points can be 6, 9, 12, 18, etc.). Such a design makes it difficult for the electrical connections to interfere with each other, and the reliability of the electrical connections is higher.

[0042] In some embodiments, the second connection plate 132 is electrically connected to the first connection plate 131 through a wire (not shown). Specifically, one end of the second connection plate 132 is electrically connected to the external component through the conductor 14, and the other end is electrically connected to the first connection plate 131 through a wire. It should be pointed out that although the second connection plate 132 is electrically connected to the first connection plate 131 through a wire, the second connection plate 132 still extends from the outside of the stator 11 (the outside of the outer cylinder 112) across the air duct 111. In other words, the electrical connection component 13 that the airflow in the air duct 111 passes through in the process of flowing out of the motor 10 is still the second connection plate 132, and not the wire used to electrically connect the first connection plate 131 and the second connection plate 132. This is still beneficial to the noise reduction and quality control of the motor 10, and the way in which the second connecting plate 132 is electrically connected to the first connecting plate 131 through a wire can reduce the length and weight of the second connecting plate 132 compared to the way in which the second connecting plate 132 is electrically connected to the first connecting plate 131 through a welding point, thereby reducing the weight and manufacturing cost of the motor 10. Of course, in some embodiments, when the second connecting plate 132 is electrically connected to the first connecting plate 131 through a wire, the second connecting plate 132 and the first connecting plate 131 are also mechanically connected using other mechanical structures (for example, a protruding first coupling member is provided on the first connecting plate 131, and a second coupling member is provided at a corresponding position of the second connecting plate 132, and the first coupling member and the second coupling member can be combined with each other to connect the first connecting plate and the second connecting plate) to increase the stability of the second connecting plate 132.

[0043] See also Figure 2 , the second connecting plate 132 includes a plurality of surfaces, wherein the area of ​​the first surface 1321 of the second connecting plate 132 is greater than the area of ​​any other surface of the second connecting plate 132. That is, the first surface 1321 is the surface with the largest area in the second connecting plate 132. When the first connecting plate 131 is electrically connected to the second connecting plate 132, on a plane perpendicular to the flow direction of the airflow in the air duct, the projected area of ​​the second connecting plate 132 is smaller than the area of ​​the first surface 1321 of the second connecting plate 132. That is to say, the surface of the second connecting plate 132 facing the air duct 111 is not the surface with the largest area in the second connecting plate 132, and compared with the surface facing the air duct 111, which is the surface with the largest area in the second connecting plate 132, the contact area between the airflow in the air duct 111 and the second connecting plate 132 can be reduced, thereby reducing the mutual influence between the second connecting plate 132 and the airflow in the air duct 111, which is beneficial to the noise reduction and quality control of the motor 10.

[0044] For further information, see Figure 2In some embodiments, the second connecting plate 132 includes a first surface 1321 and a second surface 1322 adjacent to each other. When the first connecting plate 131 is electrically connected to the second connecting plate 132, the second surface 1322 is opposite to the air duct 111, that is, the second surface 1322 of the second connecting plate 132 faces the air duct 111, and at this time, the first surface 1321 is perpendicular to the first surface 1311 of the first connecting plate 131. When the first connecting plate 131 is electrically connected to the second connecting plate 132, the first surface 1321 of the second connecting plate 132 is perpendicular to the first surface 1311 of the first connecting plate 131, which can reduce the contact area between the airflow in the air duct 111 and the second connecting plate 132, thereby reducing the mutual influence between the second connecting plate 132 and the airflow in the air duct 111, which is beneficial to the noise reduction and quality control of the motor 10. It should be noted that, in some embodiments, the surface opposite to the air duct 111 is not the surface with the largest area in the second connecting plate 132. This can further reduce the contact area between the airflow in the air duct 111 and the second connecting plate 132. Of course, in some embodiments, the first surface 1321 of the second connecting plate 132 can also be inclined with the first surface 1311 of the first connecting plate 131, which is not limited here.

[0045] See also Figure 3 and Figure 4 In some embodiments, the second connecting plate 132 is provided with a protrusion 1323 corresponding to the air duct 111, and the protrusion 1323 is used to install the functional device 19. The airflow in the air duct 111 can flow through the functional device 19 of the protrusion 1323 when flowing out of the motor 10. For example, in one example, the functional device 19 includes a wind temperature sensor (not shown), which is used to detect the temperature of the passing airflow to control the radiation source 30 ( Figure 8 For example, when the wind temperature sensor detects that the current air flow temperature exceeds the preset temperature range, the drying device 100 ( Figure 8 In this way, the heat conducted by the drying device 100 can be reduced, thereby avoiding scalding the user who is currently using the drying device 100. In another example, the functional device 19 includes a wind speed sensor (not shown), which is used to detect the flow rate of the airflow to control the rotation speed of the motor 10. For example, when the wind speed sensor detects that the flow rate of the airflow at the current moment exceeds the preset flow rate, the motor 10 can be controlled to reduce the speed to reduce the flow rate of the airflow, or the motor 10 can be controlled to shut down. In another example, the functional device 19 can also include an electric regulator (not shown), which is used to control the rotation of the motor 10, including the direction, speed, start and stop of the rotation of the motor 10.

[0046] See also Figure 3 and Figure 4 In some embodiments, the second connecting plate 132 is provided with a guide portion 1324 corresponding to the air duct 111 , and the airflow in the air duct 111 can flow through the guide portion 1324 when flowing out of the motor 10 , and the guide portion 1324 is used to guide the airflow.

[0047] In some embodiments, when the stator 11 is provided with a guide vane 114, the second connecting plate 132 corresponds to one guide vane 114, and the guide portion 1324 can also work together with the guide vane 114 to guide the airflow. Specifically, in one example, the guide portion 1324 is connected to the corresponding guide vane 114, and the guide portion 1324 can guide the airflow together with the corresponding guide vane 114 (for example, the airflow in the air duct 111 can flow directly along the guide vane 114 to the corresponding guide portion 1324, and then the airflow flows along the guide portion 1324 to the outside of the motor 10), which is conducive to the output of the airflow to the outside of the motor 10. In another example, the guide portion 1324 is spaced from the corresponding guide vane 114, that is, the guide portion 1324 is not connected to the corresponding guide vane 114, and on the plane perpendicular to the flow direction of the airflow in the air duct 111, the projection of the guide portion 1324 is located within the range of the projection of the corresponding guide vane 114. On the one hand, since the projection of the air guide 1324 is located within the projection of the corresponding guide vane 114 on the plane perpendicular to the air flow direction in the air duct 111, the air guide 1324 can then guide the airflow guided out of the air duct 111 by the corresponding guide vane 114, that is, the air guide 1324 can guide the airflow together with the corresponding guide vane 114, which is conducive to the output of the airflow to the outside of the motor 10; on the other hand, since the air guide 1324 is spaced from the corresponding guide vane 114, the size of the air guide 1324 can be reduced compared to the connection between the air guide 1324 and the corresponding guide vane 114, thereby reducing the manufacturing cost of the motor 10. Of course, in some embodiments, the guide vane 114 may not be provided in the stator 11, and the airflow is guided only by the air guide 1324, which is not limited here.

[0048] In some embodiments, the second connection board 132 includes any one of a hard circuit board, a flexible circuit board, or a hard-soft circuit board, that is, a conductive circuit is provided on the second connection board 132, and the conductive circuit on the second connection board 132 is used to electrically connect the first connection board 131 and the conductor 14. In other words, when the two ends of the second connection board 132 are electrically connected to the first connection board 131 and the conductor 14 respectively, the current in the conductor 14 can flow to the first connection board 131 through the conductive circuit on the second connection board 132.

[0049] See also Figures 5 to 7In some embodiments, the second connecting plate 132 includes a dielectric body 1325 and a conductive member 1326 disposed on the dielectric body 1325, and the conductive member 1326 is used to electrically connect the first connecting plate 131 and the conductor 14. That is to say, when the two ends of the second connecting plate 132 are electrically connected to the first connecting plate 131 and the conductor 14 respectively, the current in the conductor 14 can flow to the first connecting plate 131 through the conductive member 1326, and of course, the current in the first connecting plate 131 can also flow to the conductor 14 through the conductive member 1326. Due to the conductive member 1326 in the structure of combining the conductive member 1326 with the dielectric body 1325, compared with the conductive circuit directly using the printed circuit board (including but not limited to the hard circuit board, the flexible circuit board, or the soft-hard circuit board), it is possible to transmit a larger power current, which is conducive to driving the rotor 12 to rotate.

[0050] Specifically, Figures 5 to 7 is a cross-sectional view of the second connecting plate 132 in some embodiments. In some embodiments, the conductive member 1326 includes a wire 13261, for example, Figure 5 As shown, in one example, the wire 13261 is disposed on the outer surface of the dielectric body 1325 (for example, the wire 13261 can be adhered to the outer surface of the dielectric body 1325 by anaerobic adhesive or other adhesive). Since the wire 13261 is directly disposed on the outer surface of the dielectric body 1325, the operation is relatively simple, and thus the manufacturing difficulty of the second connecting plate 132 can be reduced. Figure 6 As shown, in another example, the wire 13261 is embedded in the dielectric body 1325 (for example, the wire 13261 is embedded in the dielectric body 1325 by in-film injection molding. The wire 13261 embedded in the dielectric body 1325 cannot be exposed from the surface of the dielectric body 1325; or the wire 13261 embedded in the dielectric body 1325 can be partially exposed from at least one outer surface of the dielectric body 1325). Since the wire 13261 is embedded in the dielectric body 1325, dust and moisture can be prevented from contacting the wire 13261 and causing damage to the wire 13261, thereby extending the service life of the motor 10. Of course, in some embodiments, the conductive member 1326 can also include a conductive metal 13262, such as Figure 7 As shown, the conductive metal 13262 is embedded in the dielectric body 1325 (for example, the conductive metal 13262 is embedded in the dielectric body 1325 by in-film injection molding). At this time, since the conductive metal 13262 is embedded in the dielectric body 1325, dust and moisture can also be prevented from contacting the conductive metal 13262 and causing damage to the conductive metal 13262, thereby extending the service life of the motor 10.

[0051] See also Figure 8The present application also provides a drying device 100. The drying device 100 includes the motor 10 and the housing 20 described in any one of the above embodiments, and the motor 10 is accommodated in the housing 20. It should be noted that the drying device 100 can be a hair dryer, a dryer, a hand dryer, a body dryer or other drying device for drying objects, which is not limited here. The following embodiments are all described by taking the drying device 100 as a hair dryer as an example.

[0052] The drying device 100 in the embodiment of the present application is provided in the motor 10 for electrically connecting the stator 11 (such as Figure 1 ) and the electrical connection assembly 13 (as shown) of the external element Figure 1 As shown in FIG. 1 ), the second connecting plate 132 in the electrical connection assembly 13 extends from the outside of the stator 11 across the air duct 111. Since the second connecting plate 132 with a certain hardness is not opposite to the air duct 111, it can prevent the airflow in the air duct 111 from passing through the second connecting plate 132 to generate large noise and vibration while electrically connecting the stator 11 and the external element, and can also keep the position and state of the second connecting plate 132 in the air duct 111 unchanged. That is, the second connecting plate 132 and the airflow in the air duct 111 will not affect each other, which is beneficial to the noise reduction and quality control of the motor 10.

[0053] Specifically, see Figure 8 In some embodiments, the housing 20 includes an outer shell 21 and an inner shell 22. The inner shell 22 is received in the outer shell 21, and the inner shell 22 and the outer shell 21 form a receiving chamber 23. The motor 10 is received in the inner shell 22, and the second connecting plate 132 of the motor 10 passes through the inner shell 22 and extends into the receiving chamber 23. In this way, the external component connected to the second connecting plate 132 can be arranged in the receiving chamber 23. It should be noted that, in some embodiments, the inner shell 22 of the housing 20 overlaps with the outer cylinder 112 of the motor 10, that is, the outer cylinder 112 of the motor 10 can serve as the inner shell 22; or, the inner shell 22 does not overlap with the outer cylinder 112 of the motor 10, that is, the inner shell 22 of the housing 20 is sleeved on the outside of the outer cylinder 112 of the motor 10, which is not limited here.

[0054] In some embodiments, the drying device 100 may further include a radiation source 30, which is used to generate thermal radiation to conduct heat to the object to be dried. The radiation source 30 is disposed in the receiving chamber 23 and is staggered with the air duct 111 of the motor 10. For example, the radiation source 30 can be disposed around the air duct 111, and the radiation source 30 can also be disposed on one side of the air duct 111. In addition, the radiation source 30 includes but is not limited to at least one of a halogen lamp, an LED, ceramics, and graphene, which are not limited here.

[0055] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0057] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: The motor comprises: A stator, wherein the stator is provided with an air duct; a rotor, the rotor being inserted through the stator, the rotor being capable of rotating inside the stator and generating airflow, and the airflow being capable of flowing inside the air duct; and An electrical connection assembly, the electrical connection assembly is used to electrically connect the stator and an external element, the electrical connection assembly includes a first connection plate and a second connection plate, the first connection plate is electrically connected to the stator, the second connection plate is electrically connected to the first connection plate and extends from the outer side of the stator across the air duct, the extended portion of the second connection plate is used to electrically connect to the external element through a conductor, and the second connection plate has a certain hardness; The first connecting plate includes a first surface and a second surface opposite to each other, the first surface is electrically connected to the stator, and the second connecting plate is electrically connected to the first surface.

2. The motor according to claim 1, characterized in that The second connecting plate includes multiple surfaces, the area of ​​the first surface of the second connecting plate is larger than the area of ​​any other surface of the second connecting plate, and on a plane perpendicular to the airflow direction in the air duct, the projected area of ​​the second connecting plate is smaller than the area of ​​the first surface of the second connecting plate.

3. The motor according to claim 2, characterized in that The first connecting plate includes a first surface and a second surface opposite to each other, the first surface is electrically connected to the stator, the second connecting plate includes a first surface and a second surface adjacent to each other, the second surface is opposite to the air duct, the first surface is perpendicular to the first surface, or the first surface is inclined relative to the first surface.

4. The motor according to claim 1, characterized in that The second connecting plate is electrically connected to the first connecting plate via a welding point.

5. The motor according to claim 4, characterized in that The second connecting plate is welded to the first connecting plate by perforation; or the second connecting plate is welded to the first connecting plate by surface welding.

6. The motor according to claim 1, characterized in that The second connection plate is electrically connected to the first connection plate through a wire.

7. The motor according to claim 1, characterized in that The second connecting board includes any one of a rigid circuit board, a flexible circuit board, or a rigid-flexible circuit board.

8. The motor according to claim 1, characterized in that The second connecting plate includes a dielectric body and a conductive member disposed on the dielectric body, and the conductive member is used for electrically connecting the first connecting plate and the conductor.

9. The motor according to claim 8, characterized in that The conductive member includes a wire, and the wire is arranged on the outer surface of the dielectric body; or The conductive member includes a wire, and the wire is embedded in the dielectric body; or The conductive element includes conductive metal, and the conductive metal is embedded in the dielectric body.

10. The motor according to claim 1, characterized in that The second connecting plate is provided with a protrusion corresponding to the air duct, and the protrusion is used to install a functional device, and the airflow can flow through the functional device.

11. The motor according to claim 10, characterized in that The functional device comprises a wind temperature sensor, and the wind temperature sensor is used to detect the temperature of the airflow to control the power of the radiation source.

12. The motor according to claim 10, characterized in that The functional device includes a wind speed sensor, and the wind speed sensor is used to detect the flow velocity of the airflow to control the rotation speed of the motor.

13. The motor according to claim 10, characterized in that The functional device includes an electric regulator, and the electric regulator is used to control the rotation of the motor.

14. The motor according to claim 1, characterized in that The second connecting plate is provided with a guide portion corresponding to the air duct, and the guide portion is used to guide the airflow.

15. The motor according to claim 14, characterized in that The stator comprises: outer cylinder; An inner cylinder, the inner cylinder is received in the outer cylinder, and the air duct is formed between the inner cylinder and the outer cylinder; and A guide vane is connected to the inner tube and the outer tube and is located in the air duct. The guide vane is used to guide the airflow. The guide portion and the guide vane work together to guide the airflow.

16. The motor according to claim 15, characterized in that The second connecting plate corresponds to one guide vane; The guide portion is connected to the corresponding guide vane; or The air guide portion is spaced apart from the corresponding guide vane, and on a plane perpendicular to the air flow direction in the air duct, a projection of the air guide portion is located within the range of a projection of the corresponding guide vane.

17. The motor according to claim 15, characterized in that The motor further includes a coil and a magnet, wherein the coil is disposed inside the inner cylinder, and the first connecting plate is electrically connected to the coil; the rotor includes: A rotating shaft, the rotating shaft is rotatably mounted in the inner cylinder through a bearing, the rotating shaft comprises a first end and a second end opposite to each other, the magnet is arranged at the first end and opposite to the coil; a rotor cover, the rotor cover being sleeved on the second end of the rotating shaft; and The fan blades are mounted on the peripheral wall of the rotor cover; wherein: The coil and the magnet interact with each other to drive the rotating shaft to rotate, and the rotor cover and the fan blades rotate along with the rotating shaft to generate the airflow.

18. A drying device, characterized in that: The drying device comprises: The motor according to any one of claims 1 to 17; and A housing is provided in which the motor is accommodated.

19. The drying device according to claim 18, characterized in that: The shell comprises an outer shell and an inner shell received in the outer shell, the inner shell and the outer shell form a receiving cavity, and the second connecting plate passes through the inner shell and extends into the receiving cavity.

20. The drying device according to claim 19, characterized in that The drying device also includes: A radiation source is disposed in the receiving cavity and staggered with the air duct, and is used to generate thermal radiation.

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