Hair drier motor with noise reduction function and air drier

Abstract

The invention discloses a blower motor with a noise reduction function and a blower, and the blower motor with the noise reduction function comprises a housing, and also comprises a shaft core, a support plate, a base and a top seat; the base is connected into the shell through a connecting rod, the top seat is movably connected to the top of the base, a driving mechanism is arranged in the base, the driving mechanism is in power connection with the shaft core, the top end of the shaft core penetrates through the base and is fixedly connected with the supporting plate, and a limiting mechanism is arranged in the top seat. The limiting mechanism is used for limiting axial movement of the shaft core, and after the shaft core, the base and the top base are assembled, external airflow sequentially enters the position between the shell and the top base and the position between the shell and the base through the supporting plate and then is output through an air blower outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of hair dryers, and in particular to a hair dryer motor and a hair dryer with noise reduction function. Background Art

[0002] Hair dryers are essential personal care appliances in modern people's lives. When drying hair with a hair dryer, strong wind force and appropriate temperature are what everyone cares about most. In order to pursue large air volume and high wind speed, hair dryers on the market often gradually increase in size and noise. In actual use, the excessive noise and size of the hair dryer also cause a lot of inconvenience to the use.

[0003] Common hair dryer motors generally include a shaft core, a stator, a wire, and a fan; Chinese patent 202323060527.7 proposes an improved low-noise high-speed motor structure for a hair dryer, in which a first gasket and a second gasket are provided on the end faces at the front and rear ends of the second installation chamber. The gasket structure can maintain the stability of the stator assembly and the fan blades at the front and rear ends of the second installation chamber, reduce the shaking and shaking of the operation of both, and thus effectively improve the stability of the high-speed fan in high-speed operation and reduce noise. However, the conventional motor structure is essentially unchanged, and while the gasket increases stability, it also increases friction during rotation, which will increase the noise of the device and reduce efficiency.

[0004] Therefore, it is proposed to propose a hair dryer motor and a hair dryer with noise reduction function by improving the relative position and structure between the shaft core, the stator and the conductor. Summary of the invention

[0005] The object of the present invention is to provide a hair dryer motor and a hair dryer with noise reduction function to solve the technical problem of excessive noise caused by high-speed rotation of existing motors.

[0006] To achieve the above object, the present invention provides the following technical solutions: A hair dryer motor with a noise reduction function comprises a shell, and also includes an axis core, a support plate, a base and a top seat; the shell is connected to the base via a connecting rod, the top of the base is movably connected to the top seat, a driving mechanism is arranged in the base, the driving mechanism is dynamically connected to the axis core, the top end of the axis core passes through the base and is fixedly connected to the support plate, a limiting mechanism is arranged in the top seat, the limiting mechanism is used to limit the axial movement of the axis core, after the axis core, the base and the top seat are assembled, the external airflow passes through the support plate in turn into between the shell and the top seat, between the shell and the base, and then is output through the hair dryer outlet.

[0007] Furthermore, the driving mechanism includes a fixed seat, a stator core, a winding, a fixing plate and a connecting ring; a plurality of the bases are symmetrically distributed in the base with the shaft core as the center, and the number of the bases is set to a multiple of three. The fixed seat is installed on the side of the base close to the shaft core, and the stator core is wound around the outside of the fixed seat. The stator core is connected to an external power supply through a three-star symmetrical star connection method, and the winding is fixedly connected to the end of the fixed seat away from the base, and the plurality of windings are commonly abutted and connected to the fixing plate, and the inner wall of the fixing plate is movably connected to the shaft core.

[0008] Furthermore, the limiting mechanism includes a top fixing ring, a bottom fixing ring, a ball and a limiting ring; the top fixing ring is arranged on the top of the top seat, and the bottom fixing ring is arranged on the bottom of the top seat, and the top fixing ring and the bottom fixing ring are both fixed to the top seat by fasteners, and a rotating cavity is formed between the top seat and the top fixing ring, and the top fixing ring is fixed in the rotating cavity, and a plurality of bottom fixing rings distributed in an array with the shaft core as the center are sleeved on the outer side of the top fixing ring, and adjacent bottom fixing rings abut against each other, and the bottom fixing ring is rotatably arranged between the top seat and the top fixing ring, and a plurality of bottom fixing rings close to one side of the shaft core extend out of the top fixing ring and movably abut against the side wall of the shaft core, and a plurality of bottom fixing rings away from the side of the shaft core extend out of the bottom fixing ring and movably abut against the inner side wall of the top seat.

[0009] Furthermore, the top fixing ring and the bottom fixing ring are connected to the top seat by the fasteners, and the fasteners include fastening bolts and fastening screws. After the top fixing ring and the bottom fixing ring are respectively assembled with the top seat, the top fastening screws are respectively fixedly connected to the top fixing ring and the top seat, and the bottom fastening screws are respectively fixedly connected to the top fixing ring and the top seat.

[0010] Furthermore, the base and the top seat are connected by an assembly component, which includes an internal thread and an external thread. The internal thread is opened at the bottom of the inner wall of the top seat, and the external thread is opened at the top of the outer wall of the top seat. The internal thread and the external thread are threadably matched, and the outer diameter of the top seat is larger than the outer diameter of the base.

[0011] Furthermore, a central axis is installed on the top of the support plate, and the turbine blades are connected to the annular array on the outer side of the central axis. The turbine blades divide the top of the support plate into a plurality of air inlet cavities of equal size, and the turbine blades are arranged to be an odd number. The horizontal cross-section of the air inlet cavity increases from top to bottom. The support plate is provided with the air inlet at the bottom corresponding to the adjacent turbine blade, and the airflow enters the air inlet through the air inlet cavity.

[0012] Furthermore, a truncated cone shell is installed on the top of the shell, and the inner wall of the truncated cone shell is movably adapted to the turbine blades. There is a gap between the inner wall of the truncated cone shell and the turbine blades. An annular plate is fixedly connected to the end of the truncated cone shell away from the shell, and a filter is connected to the inner wall of the annular plate. A sealing plate is installed on the inner wall of the filter, and the sealing plate is arranged corresponding to the central axis, and the filter is arranged corresponding to the top of the turbine blade.

[0013] Furthermore, a hemispherical rotating end is provided on the outer side of the support plate, a rubber ring is installed on the top of the inner wall of the shell, the rotating end is rotatably arranged inside the rubber ring, a connecting rubber plate is installed on the top of the top seat, and a ring key is provided on the bottom of the support plate corresponding to the connecting rubber plate, the ring key is rotatably arranged inside the connecting rubber plate, and the connecting rubber plate is configured as a rubber gasket.

[0014] Furthermore, the fixing protrusion is installed at the center of the bottom of the base, and a rotating half hole is correspondingly opened at the bottom of the shaft core. The shaft core is rotatably connected to the connecting ring through the fixing protrusion.

[0015] Furthermore, a hair dryer includes the hair dryer motor with noise reduction function.

[0016] The beneficial effects of the present invention are: 1. The present invention provides a driving mechanism and a limiting mechanism with movable assembly, and provides multiple groups of stator windings, so that the shaft core has a stable torque output and can achieve a rotation speed of up to tens of thousands of revolutions per minute; then, by providing a top fixing ring, a bottom fixing ring and a ball, the surface contact between the shaft core and the top seat is changed into a point contact, and the friction force of the point contact is smaller and the noise is lower. At the same time, the bottom fixing ring that forms a circle is movably pressed against the shaft core to axially position the shaft core, so that the friction force of the shaft core when rotating is smaller and it cannot slide up and down.

[0017] 2. The present invention provides the air inlet at the bottom of the adjacent turbine blade corresponding to the support plate, and the air flows into the air inlet through the air inlet cavity, and the horizontal cross-section of the air inlet cavity increases from top to bottom. Then, since the space between the shell and the top seat is smaller than the space between the shell and the base, the air flows into the space between the shell and the top seat through the air inlet, and then enters the space between the shell and the base. During this process, the air flows through a space that gradually increases and a pressure that gradually decreases. Therefore, the external air flow is pressed into the shell due to the pressure difference. During this process, the air flows through a space that gradually increases and a pressure that gradually decreases. Therefore, the external air flow is pressed into the shell due to the pressure difference, thereby achieving an air multiplication effect. The outer diameter of the top seat is set to be larger than the outer diameter of the base, thereby achieving an air multiplication effect.

[0018] 3. The present invention uses the movable assembly of the base and the fixing base so that the base and the top base, the shell, and the support plate can be produced separately and then assembled and combined. The device is highly replaceable and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the internal structure of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention after the shaft core is removed; Figure 4 It is a schematic diagram of the top view of the structure of the present invention; Figure 5 It is a schematic diagram of the fan structure of the present invention; Figure 6 is a schematic cross-sectional structural diagram of the limiting mechanism of the present invention; Figure 7 is a schematic cross-sectional structural diagram of the driving mechanism of the present invention; Figure 8 The present invention Figure 2 A schematic diagram of the structure enlarged at A; Fig. 9 The present invention Figure 2 Schematic diagram of the enlarged structure at B.

[0020] Description of reference numerals in the figures: 11. Cone shell; 12. Annular plate; 13. Filter screen; 14. Closing plate; 15. Shell; 16. Connecting rod; 31. Support plate; 32. Middle shaft; 33. Turbine blade; 34. Air inlet; 41. Base; 42. Fixed seat; 43. Stator core; 44. Winding; 45. Fixed plate; 46. Connecting ring; 47. Rubber gasket; 48. Fixed protrusion; 51. Top seat; 52. Top fixing ring; 53. Bottom fixing ring; 54. Ball; 55. Limiting ring; 56. Connecting rubber plate; 61. Fastener; 71. Internal thread; 72. External thread. DETAILED DESCRIPTION

[0021] Embodiment 1: Please refer to 1-9; A hair dryer motor with a noise reduction function comprises a shell 15, and also comprises an axis core, a support plate 31, a base 41 and a top seat 51; the shell 15 is connected to the base 41 via a connecting rod 16, the top of the base 41 is movably connected to the top seat 51, a driving mechanism is arranged in the base 41, the driving mechanism is dynamically connected to the axis core, the top end of the axis core passes through the base 41 and is fixedly connected to the support plate 31, a limiting mechanism is arranged in the top seat 51, the limiting mechanism is used to limit the axial movement of the axis core, after the axis core, the base 41 and the top seat 51 are assembled, the external airflow passes through the support plate 31 and enters in turn between the shell 15 and the top seat 51, between the shell 15 and the base 41, and then is output through the hair dryer outlet.

[0022] In this embodiment, by providing a driving mechanism and a limiting mechanism for movable assembly, and by providing multiple groups of stator windings, the shaft core has a stable torque output and can achieve a rotation speed of up to tens of thousands of revolutions per minute; then, by providing the cooperation of the top fixing ring 52, the bottom fixing ring 53 and the ball 54, the surface contact between the shaft core and the top seat 51 is changed to point contact, and the friction force of the point contact is smaller and the noise is lower. At the same time, the bottom fixing ring 53 that forms a circle is movable to abut against the shaft core to axially position the shaft core, so that the friction force of the shaft core rotation is smaller and it cannot slide up and down; then, through the movable assembly of the base 41 and the fixed seat 42, the base 41 and the top seat 51, the shell 15, and the support plate 31 can all be produced separately and assembled and combined, and the device is highly replaceable and more practical.

[0023] As a further solution of this embodiment, the driving mechanism includes a fixed seat 42, a stator core 43, a winding 44, a fixing plate 45 and a connecting ring 46; a plurality of the bases 41 are symmetrically distributed in the base 41 with the shaft core as the center, and the base 41 is set to a multiple of three. The fixed seat 42 is installed on the side of the base 41 close to the shaft core, and the stator core 43 is wound around the outside of the fixed seat 42. The stator core 43 is connected to an external power supply through a three-star symmetrical star connection. The winding 44 is fixedly connected to one end of the fixed seat 42 away from the base 41, and the plurality of windings 44 are commonly abutted and connected to the fixing plate 45, and the inner wall of the fixing plate 45 is movably connected to the shaft core.

[0024] The drive structure is composed of multiple sets of stator cores 43, so that it has armatures that are multiples of three and phase windings that are multiples of three. Then, the stator cores 43 are connected to the external power supply in a three-star symmetrical star connection, so that it has a stable torque output compared to a two-phase motor. Under different loads, the power output is stable, and power instability caused by load changes is not likely to occur, and the life is long and the noise is low.

[0025] Embodiment 2: In the first embodiment, there is no limit mechanism for the shaft core. Wherein, the limiting mechanism includes a top fixing ring 52, a bottom fixing ring 53, a ball 54 and a limiting ring 55; the top of the top seat 51 is provided with the top fixing ring 52, the bottom of the top seat 51 is provided with the bottom, the top fixing ring 52 and the bottom fixing ring 53 are fixed to the top seat 51 by fasteners, a rotation cavity is formed between the top seat 51 and the top fixing ring 52, the top fixing ring 52 is fixed in the rotation cavity, a plurality of bottom fixing rings 53 distributed in an array with the shaft core as the center are sleeved on the outer side of the top fixing ring 52, adjacent bottom fixing rings 53 abut against each other, the bottom fixing ring 53 is rotatably arranged between the top seat 51 and the top fixing ring 52, a plurality of bottom fixing rings 53 close to one side of the shaft core extend out of the top fixing ring 52 and movably abut against the side wall of the shaft core, and a plurality of bottom fixing rings 53 away from one side of the shaft core extend out of the bottom fixing ring 53 and movably abut against the inner side wall of the top seat 51.

[0026] In this embodiment, the distance between the top fixing ring 52 and the bottom fixing ring 53 is determined by the diameter of the shaft core, and then the diameter of the bottom fixing ring 53 is determined. A plurality of bottom fixing rings 53 are movably engaged with the shaft core, so that the surface contact between the shaft core and the top seat 51 is changed to point contact. The point contact has smaller friction and lower noise. At the same time, the shaft core is axially positioned by movably engaging the bottom fixing rings 53 in a circle with the shaft core, so that the friction of the shaft core rotation is smaller and it cannot slide up and down.

[0027] As a further solution of this embodiment, the top fixing ring 52 and the bottom fixing ring 53 are connected to the top seat 51 by the fastener 61, and the fastener 61 includes a fastening bolt and a fastening screw. After the top fixing ring 52 and the bottom fixing ring 53 are respectively assembled with the top seat 51, the top fastening screws respectively fix the top fixing ring 52 and the top seat 51, and the bottom fastening screws respectively fix the top fixing ring 52 and the top seat 51.

[0028] As a further solution of this embodiment, the base 41 and the top seat 51 are connected by an assembly component, and the assembly component includes an internal thread 71 and an external thread 72. The internal thread 71 is opened at the bottom of the inner wall of the top seat 51, and the external thread 72 is opened at the top of the outer wall of the top seat 51. The internal thread 71 and the external thread 72 are threadably adapted, and the outer diameter of the top seat 51 is larger than the outer diameter of the base 41.

[0029] In this embodiment, by setting the outer diameter of the top seat 51 to be larger than the outer diameter of the base 41, the space between the shell 15 and the top seat 51 is smaller than the space between the shell 15 and the base 41, so that the airflow gradually increases through the space and the pressure gradually decreases. Therefore, the external airflow is pressed into the shell 15 due to the pressure difference, achieving an air multiplication effect; then, by movably setting the base 41 and the top seat 51, the base 41 and the top seat 51, the shell 15, and the support plate 31 can be produced separately and then assembled and combined, so the device is highly replaceable and more practical. Embodiment 3, In the first and second embodiments, there is a lack of the structural arrangement of the housing and the fan, so we further arrange the third embodiment.

[0030] As a further solution of this embodiment, a central axis 32 is installed on the top of the support plate 31, and the turbine blades 33 are connected to the annular array on the outer side of the central axis 32. The turbine blades 33 divide the top of the support plate 31 into a plurality of air intake cavities of equal size, and the turbine blades 33 are set to an odd number (for preventing the support plate 31 from resonating), and the horizontal cross-section of the air intake cavity increases from top to bottom. The support plate 31 is provided with the air intake port 34 at the bottom corresponding to the adjacent turbine blade 33, and the airflow enters the air intake port 34 through the air intake cavity.

[0031] During this process, the space through which the airflow flows gradually becomes larger and the pressure gradually becomes smaller. Therefore, the external airflow is pressed into the interior of the shell 15 due to the pressure difference, achieving an air multiplication effect.

[0032] As a further solution of this embodiment, a conical shell 11 is installed on the top of the shell 15, and the inner wall of the conical shell 11 is movably adapted to the turbine blades 33. There is a gap between the inner wall of the conical shell 11 and the turbine blades 33. An annular plate 12 is fixedly connected to the end of the conical shell 11 away from the shell 15, and a filter screen 13 is connected to the inner wall of the annular plate 12. A sealing plate 14 is installed on the inner wall of the filter screen 13. The sealing plate 14 is arranged corresponding to the central axis 32, and the filter screen 13 is arranged corresponding to the top of the turbine blade 33.

[0033] As a further solution of this embodiment, a hemispherical rotating end is provided on the outer side of the support plate 31, a rubber ring is installed on the top of the inner wall of the shell 15, and the rotating end is rotatably set inside the rubber ring. A connecting rubber plate 56 is installed on the top of the top seat 51, and a ring key is provided on the bottom of the support plate 31 corresponding to the connecting rubber plate 56. The ring key is rotatably set inside the connecting rubber plate 56, and the connecting rubber plate 56 is configured as a rubber gasket.

[0034] As a further solution of this embodiment, the fixing protrusion 48 is installed at the bottom center of the base 41, and a rotating half hole is correspondingly opened at the bottom of the shaft core. The shaft core is rotatably connected to the connecting ring 46 through the fixing protrusion 48.

[0035] Embodiment 4 A hair dryer comprises the hair dryer motor with noise reduction function.

Claims

1. A hair dryer motor with noise reduction function, comprising a housing, characterized in that: The top of the shaft core passes through the base and is fixedly connected to the support plate; a limiting mechanism is arranged in the top seat, and the limiting mechanism is used to limit the axial movement of the shaft core; after the shaft core, the base and the top seat are assembled, the external airflow passes through the support plate in turn into between the shell and the top seat, and between the shell and the base, and then is output through the hair dryer outlet.

2. A hair dryer motor with noise reduction function according to claim 1, characterized in that: The driving mechanism includes a fixed seat, a stator core, a winding, a fixing plate and a connecting ring; a plurality of the bases are symmetrically distributed in the base with the shaft core as the center, and the number of the bases is set to a multiple of three. The fixed seat is installed on the side of the base close to the shaft core, and the stator core is wound around the outside of the fixed seat. The stator core is connected to an external power supply through a three-star symmetrical star connection method, and the winding is fixedly connected to one end of the fixed seat away from the base, and the plurality of windings are commonly abutted and connected to the fixing plate, and the inner wall of the fixing plate is movably connected to the shaft core.

3. The hair dryer motor with noise reduction function according to claim 2, characterized in that: The limiting mechanism comprises a top fixing ring, a bottom fixing ring, a ball and a limiting ring; The top of the top seat is provided with the top fixing ring, and the bottom fixing ring is provided with the bottom of the top seat. The top fixing ring and the bottom fixing ring are both fixed to the top seat by fasteners. A rotation cavity is formed between the top seat and the top fixing ring. The top fixing ring is fixed in the rotation cavity. A plurality of bottom fixing rings distributed in an array with the shaft core as the center are sleeved on the outer side of the top fixing ring. Adjacent bottom fixing rings abut against each other. The bottom fixing ring is rotatably arranged between the top seat and the top fixing ring. A plurality of bottom fixing rings close to one side of the shaft core extend out of the top fixing ring and movably abut against the side wall of the shaft core, and a plurality of bottom fixing rings away from the side of the shaft core extend out of the bottom fixing ring and movably abut against the inner side wall of the top seat.

4. The hair dryer motor with noise reduction function according to claim 3, characterized in that: The top fixing ring and the bottom fixing ring are connected to the top seat by the fasteners, and the fasteners include fastening bolts and fastening screws. After the top fixing ring and the bottom fixing ring are respectively assembled with the top seat, the top fastening screws are respectively fixedly connected to the top fixing ring and the top seat, and the bottom fastening screws are respectively fixedly connected to the top fixing ring and the top seat.

5. The hair dryer motor with noise reduction function according to claim 4, characterized in that: The base and the top seat are connected by an assembly component, which includes an internal thread and an external thread. The bottom of the inner wall of the top seat is provided with the internal thread, and the top of the outer wall of the top seat is provided with the external thread. The internal thread and the external thread are threadably matched, and the outer diameter of the top seat is larger than the outer diameter of the base.

6. The hair dryer motor with noise reduction function according to claim 5, characterized in that: A central axis is installed on the top of the support plate, and the turbine blades are connected to the annular array on the outer side of the central axis. The turbine blades divide the top of the support plate into a plurality of air inlet cavities of equal size, and the turbine blades are arranged in an odd number. The horizontal cross-section of the air inlet cavity increases from top to bottom. The support plate is provided with the air inlet at the bottom corresponding to the adjacent turbine blade, and the airflow enters the air inlet through the air inlet cavity.

7. The hair dryer motor with noise reduction function according to claim 6, characterized in that: A truncated cone shell is installed on the top of the shell, and the inner wall of the truncated cone shell is movably adapted to the turbine blades. There is a gap between the inner wall of the truncated cone shell and the turbine blades. An annular plate is fixedly connected to the end of the truncated cone shell away from the shell, and a filter is connected to the inner wall of the annular plate. A sealing plate is installed on the inner wall of the filter, and the sealing plate is arranged corresponding to the central axis, and the filter is arranged corresponding to the top of the turbine blade.

8. The hair dryer motor with noise reduction function according to claim 7, characterized in that: A hemispherical rotating end is arranged on the outer side of the support plate, a rubber ring is installed on the top of the inner wall of the shell, and the rotating end is rotatably arranged inside the rubber ring. A connecting rubber plate is installed on the top of the top seat, and an annular key is arranged on the bottom of the support plate corresponding to the connecting rubber plate. The annular key is rotatably arranged inside the connecting rubber plate, and the connecting rubber plate is arranged as a rubber gasket.

9. The hair dryer motor with noise reduction function according to claim 8, characterized in that: The fixing protrusion is installed at the center of the bottom of the base, and a rotating half hole is correspondingly opened at the bottom of the shaft core. The shaft core is rotatably connected to the connecting ring through the fixing protrusion.

10. A hair dryer, characterized in that: A hair dryer motor with noise reduction function comprising the one described in any one of claims 1 to 9.

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