Side spinning multi-stage variable speed hand implement

Abstract

The application discloses a side-rotating multi-stage variable-speed handheld appliance, which comprises a handheld part and a control assembly, the handheld part is internally provided with an air duct, and a brushless motor is arranged in the air duct; the control assembly is installed on the handheld part, the control assembly is of a hollow structure, the hollow structure of the control assembly forms an air passing channel, the air duct is located in the air passing channel, and the control assembly is used for adjusting the rotating speed of the brushless motor; the control assembly of the application is annular, the air duct is located in the control assembly, and then the fluid in the air duct can pass through the control assembly, so that the control assembly avoids occupying the space of the air duct, and then the air outlet of the air duct is unobstructed.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and more particularly to a side-rotating multi-speed handheld device. Background Technology

[0002] Hair dryers are an essential small beauty and care appliance in daily life. They are mainly used for drying and styling hair, but can also be used for other drying and beauty purposes.

[0003] Current hair dryers often use control components to select multiple speed settings for wind power and temperature. These control components include a roller, which is located on the handle. Part of the roller is embedded in the handle. The airflow from the hair dryer cannot pass through the roller, which reduces the airflow path corresponding to the roller and obstructs the airflow from the hair dryer. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a side-rotating multi-stage variable speed handheld device.

[0005] According to a first aspect of the present invention, a side-rotating multi-speed handheld device includes a handheld part and a control component. The handheld part has an air duct, and a brushless motor is disposed in the air duct. The control component is mounted on the handheld part and has a hollow structure. The hollow structure of the control component forms an air passage, and the air duct is located in the air passage. The control component is used to adjust the speed of the brushless motor.

[0006] The side-rotating multi-speed handheld device according to the present invention has at least the following technical effects: the control component is ring-shaped, so that the air duct is located inside the control component, and the fluid in the air duct can pass through the control component, thereby the control component avoids occupying the space of the air duct, and thus the air outlet of the air duct can be unobstructed.

[0007] According to some embodiments of the present invention, the cross-sectional area at any point on the air duct is 400 mm². 2 -500mm 2 .

[0008] According to some embodiments of the present invention, the handheld part has an air inlet and an air outlet communicating with the air duct, the air inlet being located upstream of the air inlet of the brushless motor, and the air outlet and the control component being located downstream of the air outlet of the brushless motor.

[0009] According to some embodiments of the present invention, the brushless motor is located in the middle of the handheld part.

[0010] According to some embodiments of the present invention, the position of the control component corresponds to the position of the air outlet.

[0011] According to some embodiments of the present invention, the control component includes a rotary encoder, a rotating component, and a drive board. The rotary encoder is electrically connected to the drive board, and the rotating component is connected to the rotary encoder so that when the rotating component rotates, the rotary encoder generates a corresponding gear adjustment signal. The gear adjustment signal is fed back to the drive board, and the drive board is used to adjust the speed of the brushless motor.

[0012] According to some embodiments of the present invention, a main body is further included, which is detachably mounted on the handheld part. The main body may be an air outlet unit communicating with the handheld part or a dust collection device communicating with the handheld part.

[0013] According to some embodiments of the present invention, the air outlet unit is provided with a heating element, and the control component is capable of adjusting the heating temperature of the heating element.

[0014] According to some embodiments of the present invention, the outer side of the handheld part has a recess, and the rotating member, the rotary encoder and the drive plate are sleeved on the recess.

[0015] According to some embodiments of the present invention, the handheld part includes a first housing and a second housing, a portion of the first housing is connected to the control component, another portion of the first housing is snap-fitted to the second housing, the air duct is formed between the first housing and the second housing, and the position of the brushless motor corresponds to the position of the second housing.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Additional aspects and advantages of the invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a cross-sectional view of the side-rotating multi-speed handheld device according to an embodiment of the present invention;

[0019] Figure 2 An exploded view of a side-rotating multi-speed handheld device;

[0020] Figure 3 A cross-sectional view of the control component;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5 A radial cross-sectional view of the existing roller positioned on the handle;

[0023] Figure 6 A side view of a side-rotating multi-speed handheld device;

[0024] Figure 7 for Figure 6 Sectional view of AA;

[0025] Figure 8 A schematic diagram of a handheld device applied to a hair dryer;

[0026] Figure 9 This is a schematic diagram of the structure of a handheld device applied to a handheld vacuum cleaner.

[0027] Reference numerals: Handheld part 100, air duct 110, brushless motor 120, air inlet 130, air outlet 140, recess 150, first housing 160, second housing 170, control component 200, air passage 201, rotary encoder 210, rotating part 220, drive plate 230, main body 300, roller 400. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number. The use of "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0032] Reference Figure 1As shown, the side-rotating multi-speed handheld device according to an embodiment of the present invention includes a handheld part 100 and a control component 200. The handheld part 100 has an air duct 110, and a brushless motor 120 is disposed within the air duct 110. The control component 200 is mounted on the handheld part 100, as shown in the figure. Figure 2 , 3 As shown, the control component 200 has a hollow structure, and the hollow structure of the control component 200 forms an air passage 201, as... Figure 1 , 4 As shown, air duct 110 is located within air passage 201; as Figure 3 As shown, the control component 200 includes a rotary encoder 210, a rotating component 220, and a drive board 230. The rotary encoder 210 is electrically connected to the drive board 230, and the rotating component 220 is connected to the rotary encoder 210 so that when the rotating component 220 rotates, the rotary encoder 210 generates a corresponding gear adjustment signal. The gear adjustment signal is fed back to the drive board 230, and the drive board 230 adjusts the speed of the brushless motor 120.

[0033] For example, such as Figure 1 As shown, the handheld part 100 is cylindrical, and the interior of the handheld part 100 is hollow, forming an air duct 110. The upper end of the handheld part 100 is provided with an air outlet 140 communicating with the air duct 110, and the lower end of the handheld part 100 is provided with an air inlet 130 communicating with the air duct 110. The brushless motor 120 is installed in the air duct 110, and the brushless motor 120 can be of model NBW-FT-001. It is conceivable that the control component 200 may include a hollow rotating part 220 and a hollow adjusting element, the adjusting element being used to adjust the speed of the brushless motor 120.

[0034] like Figure 5 As shown, the existing handheld part 100 is equipped with a roller 400, a portion of which is embedded within the handheld part 100. This causes the roller 400 to occupy a portion of the internal space of the handheld part 100, resulting in 30% of the space in the air duct 110 corresponding to the roller 400 being blocked by the roller 400, thus affecting the airflow. Figure 2 , 3 As shown, the rotary encoder 210, rotating member 220, and drive plate 230 of this application are all annular, as... Figure 4 As shown, the fluid in the air duct 110 can pass through the hollow part of the rotary encoder 210, the middle part of the rotating member 220, and the hollow part of the drive plate 230, such as... Figure 6 , 7As shown, the rotary encoder 210, rotating component 220, and drive plate 230 avoid occupying the space of the air duct 110, thereby allowing the air duct to flow smoothly and ensuring air volume, while also making the handheld device structure compact. Specifically, an air passage 201 is formed between the hollow part of the rotary encoder 210, the hollow part of the rotating component 220, and the hollow part of the drive plate 230. The diameter of the air passage 201 is larger than the diameter of the air duct 110, thus the air duct 110 is located in the air passage 201.

[0035] The rotating component 220 can rotate clockwise or counterclockwise along the circumference of the handheld part 100. The rotating component 220 is connected to the rotating part of the rotary encoder 210. The rotary encoder 210 is electrically connected to the drive board 230. The drive board 230 is connected to the brushless motor 120. When the rotating component 220 rotates relative to the handheld part 100, the rotary encoder 210 can output different adjustment signals. The drive board 230 adjusts the speed of the brushless motor 120 according to the different adjustment signals. The rotary encoder 210 can be an EC43 hollow rotary encoder 210 (20 bits). The drive board 230 can be a PCB control board. The brushless DC motor is driven by changing the DC voltage through the MOSFET on the drive board 230, thereby changing the speed of the brushless motor 120 to achieve stepless speed regulation. This allows the wind speed to be adjusted not only between 2 and 3 levels, but also to 10 or even 20 levels or more. The multi-level wind speed adjustment meets the user's needs in different environments.

[0036] Specifically, the rotary encoder 210, the rotating component 220, and the drive plate 230 are all mounted on the outside of the handheld part 100. The rotary encoder 210 can be driven by a low-voltage DC (safe voltage DC5V) brushless DC motor. The speed of the brushless motor 120 is adjustable from 50,000 rpm to 110,000 rpm. This wide speed range, combined with the handheld part 100 and other structures, allows the handheld device to be used in the fields of handheld hair curlers, handheld vacuum cleaners, small hair straighteners, high-speed hair dryers, pet hair dryers, and hair drying devices for mothers and babies. The drive plate 230 can also be electrically connected to the heating element to achieve stepless temperature adjustment, with an adjustment range of 40℃ to 99℃. The rotating component 220 can be rotated clockwise to adjust the airflow or temperature of the handheld device, increasing the airflow or temperature, and rotated counterclockwise to adjust the airflow or temperature, decreasing the airflow or temperature. Its maximum controllable range is 20 levels.

[0037] In some embodiments of the present invention, the cross-sectional area of ​​the handheld portion 100 in the radial direction at any point on the air duct 110 is 400 mm². 2 Up to 500mm 2 This is to ensure the wind power output performance of the brushless motor 120.

[0038] In some embodiments of the present invention, such as Figure 1 As shown, the air inlet 130 is located upstream of the brushless motor 120, and the air outlet 140 and the control component 200 are located downstream of the brushless motor 120. That is, the air inlet 130 is located below the brushless motor 120, and the control component 200 and the air outlet 140 are located above the brushless motor 120, so that the fluid delivered by the brushless motor 120 can pass through the rotary encoder 210, the rotating component 220 and the drive plate 230, and then be discharged through the air outlet 140.

[0039] In a further embodiment of the present invention, such as Figure 1 As shown, the brushless motor 120 is located in the middle of the handheld part 100.

[0040] In a further embodiment of the present invention, such as Figure 1 As shown, the position of the control component 200 corresponds to the position of the air outlet 140, that is, the control component 200 is located at the upper end of the handheld part 100, making it easier for the user to adjust the rotating part 220 and avoid accidentally touching the adapter 220 when holding the appliance.

[0041] In some embodiments of the present invention, such as Figure 1 , 2 As shown in Figure 4, the outer side of the handheld part 100 has a recess 150. The rotary encoder 210 and the drive plate 230 are sleeved on the recess 150. The rotating member 220 is sleeved on the rotary encoder 210 and has a recess 150. A part of the rotating member 220 is embedded in the handheld part 100, so that the diameter of the rotating member 200 is greater than or equal to the diameter of the handheld part 100. This makes the radial space occupied by the handheld part 100 corresponding to the control component 200 small. When the recess 150 is located at the upper end of the handheld part 100, the upper end of the handheld part 100 forms a stepped structure. The stepped structure facilitates connection with the hair dryer's nozzle, the upper and lower clamps of the curling iron, or other structures, and can be used to support these structures. This allows the handheld device to be applied to handheld curling irons, handheld vacuum cleaners, small straightening combs, high-speed hair dryers, pet hair dryers, hair drying devices for mothers and babies, and other hair care products.

[0042] In some embodiments of the present invention, such as Figure 4 As shown, it also includes a main body 300, which is detachably mounted on the handheld part 100. The main body 300 can be an air outlet unit or a dust collection device connected to the handheld part 100. The air outlet unit can be the nozzle of a hair dryer (such as...). Figure 8 (As shown), curling iron barrels, straightener comb heads, pet dryer nozzles, or other hair styling product air outlets; dust collection devices can be dust collection devices for handheld vacuum cleaners, such as... Figure 9 As shown, this enables the handheld device to be applied to a handheld vacuum cleaner.

[0043] In a further embodiment of the present invention, a heating element is provided in the air outlet unit, and the drive board 230 can adjust the heating temperature of the heating element according to the adjustment signal, such as... Figure 8 As shown, the air outlet unit equipped with the heating element and the handheld part 100 together constitute a hair dryer. The heating element can be a silicon controlled rectifier and a heating wire or other heating components.

[0044] In a further embodiment of the present invention, such as Figure 3 As shown, the rotary encoder 210 is snapped into the rotating part 220. A part of the main body 300 is placed between the rotary encoder 210 and the rotating part 220. The rotary encoder 210 and the rotating part 220 cooperate to fix the main body 300. The rotary encoder 210 and the rotating part 220 are snapped into each other to facilitate the assembly and disassembly of the main body 300. The snap-in connection can be a combination of a snap and a hole.

[0045] In some embodiments of the present invention, such as Figure 2 As shown, the handheld part 100 includes a first housing 160 and a second housing 170. A part of the first housing 160 is connected to the control component 200, and another part of the first housing 160 is snapped into the second housing 170. An air duct 110 is formed between the first housing 160 and the second housing 170. The position of the brushless motor 120 corresponds to the position of the second housing 170.

[0046] For example, the control component 200 is sleeved on the upper end of the first housing 160. The lower part of the first housing 160 has a notch on one side. The second housing 170 is snapped into the notch. The brushless motor 120 is installed between the second housing 170 and the first housing 160 to facilitate the installation and removal of the brushless motor 120. The installation and removal of the brushless motor 120 and the control component 200 do not interfere with each other.

[0047] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A side-rotating multi-stage variable speed handheld device, characterized in that, include: The handheld part has an air duct inside, and a brushless motor is installed inside the air duct; A control component is mounted on the handheld part. The control component has a hollow structure, and the hollow structure of the control component forms an air passage. The air passage is located inside the air passage. The control component is used to adjust the speed of the brushless motor. The control component includes a rotary encoder, a rotating component, and a drive board. The rotary encoder is electrically connected to the drive board, and the rotating component is connected to the rotary encoder so that when the rotating component rotates, the rotary encoder generates a corresponding gear adjustment signal. The gear adjustment signal is fed back to the drive board, and the drive board is used to adjust the speed of the brushless motor. The rotary encoder, the rotating component, and the drive plate are all annular, and the fluid in the air duct can pass through the hollow part of the rotary encoder, the middle part of the rotating component, and the hollow part of the drive plate. The rotating component can rotate clockwise or counterclockwise along the circumference of the handheld part, and the rotating component is connected to the rotating part of the rotary encoder.

2. The side-rotating multi-stage variable speed handheld device according to claim 1, characterized in that: The cross-sectional area at any point on the air duct is 400 mm². 2 -500mm 2 .

3. The side-rotating multi-stage variable speed handheld device according to claim 1, characterized in that: The handheld part has an air inlet and an air outlet that connect to the air duct. The air inlet is located upstream of the air inlet of the brushless motor, and the air outlet and the control component are located downstream of the air outlet of the brushless motor.

4. The side-rotating multi-stage speed-changing handheld device according to claim 1 or 3, characterized in that: The brushless motor is located in the middle of the handheld part.

5. The side-rotating multi-stage variable speed handheld device according to claim 3, characterized in that: The position of the control component corresponds to the position of the air outlet.

6. The side-rotating multi-stage variable speed handheld device according to claim 1, characterized in that: It also includes a main body, which is detachably mounted on the handheld part. The main body is an air outlet unit or a dust collection device that is connected to the handheld part.

7. The side-rotating multi-stage speed-changing handheld device according to claim 6, characterized in that: The air outlet unit is equipped with a heating element, and the control component can adjust the heating temperature of the heating element.

8. The side-rotating multi-stage variable speed handheld device according to claim 1, characterized in that: The outer side of the handheld part has a recess, and the rotating part, the rotary encoder and the drive plate are sleeved on the recess.

9. The side-rotating multi-stage variable speed handheld device according to claim 1, characterized in that: The handheld part includes a first housing and a second housing. A portion of the first housing is connected to the control component, and another portion of the first housing is snapped into the second housing. The air duct is formed between the first housing and the second housing, and the position of the brushless motor corresponds to the position of the second housing.

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