Anti-winding structure of blower motor

Abstract

An anti-winding structure of a blower motor comprises an air duct, a handle fixedly installed at one end of the bottom of the air duct, the motor arranged in the air duct and a fan arranged on a rotating shaft of the motor in a sleeving mode, one end of the air duct is an air outlet, the other end of the air duct is an air inlet, and an air inlet shade is detachably installed at the air inlet. The motor is connected to the side, close to the air inlet, of the interior of the air duct in a threaded mode, a mounting frame is fixedly mounted in the air duct, the mounting frame and the motor are arranged in a spaced mode, a plurality of resistance wires are fixedly mounted on the mounting frame and electrically connected with the circuit board through wires, and the air gear switch and the motor are electrically connected with the circuit board through wires. The circuit board is provided with an anti-winding module, and the anti-winding module is used for protecting the motor when the voltage abnormally rises. And through the anti-winding module, the situation that the motor is damaged due to winding caused by the fact that the motor does not rotate in time when the circuit is short-circuited can be avoided, and the safety performance of the product is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to an anti-tangle structure for hair dryer motors. Background Technology

[0002] A hair dryer consists of a set of heating elements and a small, high-speed fan. When powered on, the heating elements generate heat, and the air blown by the fan passes through the heating elements, turning into hot air. If only the small fan is running, but the heating elements are not hot, then only air is blown out. In current technology, hair dryers have relatively low safety; if the plug gets wet or encounters other unexpected situations, the motor is extremely prone to becoming tangled and subsequently damaged. Utility Model Content

[0003] The purpose of this invention is to provide an anti-winding structure for hair dryer motors to solve the problems existing in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A hair dryer motor anti-tangle structure includes a blower tube, a handle fixedly installed at one end of the bottom of the blower tube, a motor disposed inside the blower tube, and a fan sleeved on the motor shaft. One end of the blower tube is an air outlet, and the other end of the blower tube is an air inlet. The handle is disposed near the air inlet. An air inlet cover is detachably installed at the air inlet. The motor is screwed into the blower tube on the side near the air inlet. A mounting bracket is fixedly installed inside the blower tube. The mounting bracket is spaced apart from the motor. Multiple resistance wires are fixedly installed on the mounting bracket.

[0006] A circuit board is bonded and fixed inside the handle, and a windshield switch is slidably installed on one side of the handle. The multiple resistance wires are electrically connected to the circuit board via wires. The windshield switch and the motor are electrically connected to the circuit board via wires. An anti-winding module is provided on the circuit board, which is used to protect the motor when the voltage rises abnormally.

[0007] By adopting the above technical solution, when the hair dryer needs to blow hot air, the resistance wire is energized and begins to heat up, while the motor located at the air inlet rotates continuously. The motor is a 100,000 RPM brushless three-phase motor, which drives the fan to draw air from the outside into the air duct. A sealing ring is set around the fan, which improves the airtightness, increases the air pressure and air speed inside the air duct, and reduces the vibration and noise of the motor during operation. After the air inside the air duct is heated by the resistance wire, it will be discharged from the air outlet and dry the user's hair. A special anti-tangling module is set on the circuit board inside the handle. Placing the circuit board inside the handle can effectively prevent the heat generated by the resistance wire from affecting the operation of the circuit board. When the circuit is short-circuited, the anti-tangling module will activate immediately to prevent the motor from tangling and being damaged when the voltage is abnormal.

[0008] In a further embodiment, a power supply VCC is provided on the circuit board. The power supply VCC is connected to one end of a unidirectional capacitor C1, the other end of the unidirectional capacitor C1 is connected to one end of a motor M1, the other end of the motor M1 is connected to one end of a capacitor C2, the other end of the capacitor C2 is connected to one end of a smart switch K1, the other end of the smart switch K1 is connected to one end of a capacitor C3, the other end of the capacitor C3 is connected to one end of an inductor L1, and the other end of the inductor L1 is connected to VCC.

[0009] One end of the unidirectional capacitor C1 is connected in parallel to the collector of the transistor Q1, the emitter of the transistor Q1 is connected in parallel to the other end of the unidirectional capacitor C1, and the base of the transistor Q1 is grounded.

[0010] The collector of transistor Q2 is connected in parallel to the end where capacitors C2 and C3 are connected, the emitter of transistor Q2 is connected in parallel to the end where capacitor C3 and inductor L1 are connected, and the base of transistor Q2 is grounded.

[0011] By adopting the above technical solution, the current flows through the collector of transistor Q1 and then through the emitter of transistor Q1 to reach motor M1. Motor M1 is energized and rotates, driving the fan to rotate. During normal operation, the current flows through capacitor C2, then through the collector of transistor Q2, and then through the emitter of transistor Q2 into inductor L1. The original alternating current, after passing through unidirectional capacitor C1, motor M1, and capacitor C2, forms an oscillating circuit together with transistors Q1 and Q2. The most crucial point is the intelligent switch K1. K1 is positioned between capacitor C2 and inductor L1. Normally, transistor Q2 is connected in parallel with smart switch K1, and current does not flow through smart switch K1. However, when the voltage rises abnormally, smart switch K1 will instantly conduct after detecting this fault, outputting reverse current before a short circuit, causing motor M1 to rotate extremely fast. At this time, the current flows through unidirectional capacitor C1. Unidirectional capacitor C1 also has the functions of blocking DC and passing AC, and storing energy. When motor M1 quickly reverses to a sufficient number of revolutions in a short time, it can avoid entanglement and damage to the motor.

[0012] In a further embodiment, a plurality of positioning holes are provided on the inner sidewall of the air duct, and a plurality of air duct components are integrally formed on the inner sidewall of the air duct, the air duct components being used to change the direction of airflow.

[0013] By adopting the above technical solution, the air duct assembly can change the flow direction of the air blown by the fan inside the air duct, and at the same time, it can cause slight changes in the air pressure at various parts of the air duct, thereby enhancing the drying effect.

[0014] In a further embodiment, a circular diffuser is inserted into the air outlet of the air duct.

[0015] By adopting the above technical solutions, the nozzle can be changed according to needs. The round diffuser nozzle is mainly for users who perm their hair, and can help them maintain their style better. Under normal circumstances, the gentle airflow of the diffuser nozzle is not enough to dry the hair quickly. Therefore, it is often used in conjunction with the concentrator nozzle to dry the scalp first, then dry the hair until it is half dry, and then slowly adjust the style.

[0016] In a further embodiment, LED light strips are glued and fixed to both sides of the air duct.

[0017] By adopting the above technical solution, the LED light strip will pulsate slowly as the hair dryer is used. The color and pulsation effect are different at different airflow levels, which not only increases the aesthetics but also enhances the user's visual experience. At the same time, it can also prevent hair from being burned by excessively long blow-drying time.

[0018] In a further embodiment, a tilt sensor is screwed inside the handle, and the tilt sensor is electrically connected to the circuit board via wires.

[0019] By adopting the above technical solution, the tilt sensor will start working after the hair dryer is turned on. When the user is using the hair dryer to blow-dry their hair, the angle will inevitably change continuously. If the tilt sensor detects that the hair dryer is kept at an angle within a certain rated range for a certain period of time, it will send a signal to the circuit board to make it stop naturally. This can prevent the nozzle from getting too hot and also make it easier for the user to style their hair. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of the anti-tangle structure for the hair dryer motor of this utility model;

[0021] Figure 2 This is a schematic diagram illustrating the internal structure of the blower tube in the anti-tangle structure for the blower motor of this utility model;

[0022] Figure 3 This is a circuit diagram illustrating the anti-tangle module in the anti-tangle structure of the hair dryer motor of this utility model.

[0023] In the diagram, 1. Air duct; 2. Handle; 21. Circuit board; 22. Windshield switch; 3. Tilt sensor; 4. Fan; 5. Air inlet cover; 6. Mounting bracket; 7. Resistance wire; 8. Air duct assembly; 9. Circular diffuser; 10. LED light strip. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0026] Example:

[0027] like Figures 1-2As shown, the anti-tangle structure for the hair dryer motor includes a blower tube 1, a handle 2 fixedly installed at one bottom end of the blower tube 1, a motor M1 / 11 disposed inside the blower tube 1, and a fan 4 sleeved on the shaft of the motor M1 / 11. LED light strips 10 are glued and fixed to both sides of the blower tube 1. One end of the blower tube 1 is an air outlet, and the other end is an air inlet. A circular diffuser 9 is inserted into the air outlet of the blower tube 1. Multiple positioning holes are provided on the inner sidewall of the blower tube 1. The upper part is integrally molded with multiple air duct components 8, which are used to change the airflow direction. The handle 2 is located near the air inlet. An angle sensor 3 is screwed into the handle 2. An air inlet cover 5 is detachably installed at the air inlet. The motor M1 / 11 is screwed into the air duct 1 on the side near the air inlet. A mounting bracket 6 is fixedly installed inside the air duct 1. The mounting bracket 6 is spaced apart from the motor M1 / 11. Multiple resistance wires 7 are fixedly installed on the mounting bracket 6. The handle... The handle 2 has a circuit board 21 internally bonded and fixed, and a wind deflector switch 22 is slidably installed on one side of the handle 2. The tilt sensor 3 is electrically connected to the circuit board 21 via wires. The multiple resistance wires 7 are also electrically connected to the circuit board 21 via wires. The wind deflector switch 22 and the motor M1 / 11 are also electrically connected to the circuit board 21 via wires. The circuit board 21 is equipped with an anti-winding module, which is used to protect the motor M1 / 11 when the voltage rises abnormally. Through the wind deflector switch 22, the user can adjust the wind speed and whether the air outlet emits hot or cold air. The air duct assembly 8 can effectively enhance the air pressure. The tilt sensor 3 inside the handle 2 can pause the blowing when the user places the hair dryer on the table and resume the blowing when the user picks up the paused hair dryer, ensuring that heat does not accumulate. The circuit board 21 inside the handle 2 also has an anti-winding module that can effectively prevent the ultra-high speed motor M1 / 11 from getting tangled when the voltage suddenly increases.

[0028] like Figures 2-3As shown, a power supply VCC is provided on the circuit board 21. The power supply VCC is connected to one end of a unidirectional capacitor C1. The other end of the unidirectional capacitor C1 is connected to one end of a motor M1 / 11. The other end of the motor M1 / 11 is connected to one end of a capacitor C2. The other end of the capacitor C2 is connected to one end of a smart switch K1. The other end of the smart switch K1 is connected to one end of a capacitor C3. The other end of the capacitor C3 is connected to one end of an inductor L1. The other end of the inductor L1 is connected to VCC. The collector of a transistor Q1 is connected in parallel to one end of the unidirectional capacitor C1. The emitter of transistor Q1 is connected in parallel to the other end of unidirectional capacitor C1. The base of transistor Q1 is grounded. The collector of transistor Q2 is connected in parallel to the end where capacitors C2 and C3 are connected. The emitter of transistor Q2 is connected in parallel to the end where capacitor C3 and inductor L1 are connected. The base of transistor Q2 is grounded. Through intelligent switch K1, inductor L1, and multiple transistors and capacitors, before the voltage at motor M1 / 11 suddenly rises and a short circuit occurs, the reverse current can flow through motor M1 / 11 by turning on intelligent switch K1, causing it to rotate ultra-fast, thereby protecting motor M1 / 11.

[0029] Specific implementation process: When the intelligent switch K1 detects an abnormal current and the voltage at motor M1 / 11 rises rapidly, the intelligent switch K1 will be directly turned on. At this time, the phase of the power supply VCC is reversed, the current is reversed, and it flows to motor M1 / 11 through inductor L1 and intelligent switch K1, and finally returns to the power supply VCC through unidirectional capacitor C1.

[0030] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A hair dryer motor anti-winding structure, comprising a blower tube (1), a handle (2) fixedly installed at one end of the bottom of the blower tube (1), a motor (M1, 11) disposed inside the blower tube (1), and a fan (4) sleeved on the shaft of the motor (M1, 11), characterized in that: One end of the air duct (1) is an air outlet, and the other end of the air duct (1) is an air inlet. The handle (2) is located at the end near the air inlet. An air inlet cover (5) is detachably installed at the air inlet. The motor (M1,11) is screwed into the air duct (1) on the side near the air inlet. A mounting bracket (6) is fixedly installed inside the air duct (1). The mounting bracket (6) is spaced apart from the motor (M1,11). Multiple resistance wires (7) are fixedly installed on the mounting bracket (6). A circuit board (21) is glued and fixed inside the handle (2), and a windshield switch (22) is slidably installed on one side of the handle (2). The plurality of resistance wires (7) are electrically connected to the circuit board (21) through wires. The windshield switch (22) and the motor (M1,11) are electrically connected to the circuit board (21) through wires. An anti-winding module is provided on the circuit board (21). The anti-winding module is used to protect the motor (M1,11) when the voltage rises abnormally.

2. The anti-winding structure for the hair dryer motor according to claim 1, characterized in that: The circuit board (21) is provided with a power supply VCC. The power supply VCC is connected to one end of a unidirectional capacitor C1. The other end of the unidirectional capacitor C1 is connected to one end of a motor (M1,11). The other end of the motor (M1,11) is connected to one end of a capacitor C2. The other end of the capacitor C2 is connected to one end of a smart switch K1. The other end of the smart switch K1 is connected to one end of a capacitor C3. The other end of the capacitor C3 is connected to one end of an inductor L1. The other end of the inductor L1 is connected to VCC. One end of the unidirectional capacitor C1 is connected in parallel to the collector of the transistor Q1, the emitter of the transistor Q1 is connected in parallel to the other end of the unidirectional capacitor C1, and the base of the transistor Q1 is grounded. The collector of transistor Q2 is connected in parallel to the end where capacitors C2 and C3 are connected, the emitter of transistor Q2 is connected in parallel to the end where capacitor C3 and inductor L1 are connected, and the base of transistor Q2 is grounded.

3. The anti-tangle structure for the hair dryer motor according to claim 1, characterized in that: The inner sidewall of the air duct (1) is provided with multiple positioning holes, and multiple air duct components (8) are fixedly installed on the inner sidewall of the air duct (1). The air duct components (8) are used to change the direction of airflow.

4. The anti-winding structure for the hair dryer motor according to claim 3, characterized in that: A circular diffuser nozzle (9) is inserted into the air outlet of the air duct (1).

5. The anti-tangle structure for the hair dryer motor according to claim 4, characterized in that: LED light strips (10) are glued and fixed on both sides of the air duct (1).

6. The anti-winding structure for the hair dryer motor according to claim 1, characterized in that: An inclination sensor (3) is screwed inside the handle (2), and the inclination sensor (3) is electrically connected to the circuit board (21) via wires.

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