Hair Curler

The disclosure relates to the technical field of hairdressing tools, particularly to a hair curler.

Hair curlers, as tools for styling hair, are widely used. In recent years, automatic rotating hair curlers have emerged. Due to their automatic rotation function, they provide more convenience during operation. However, the automatic rotating hair curlers currently available on the market have a significantly higher failure rate compared to traditional manual hair curlers. Common issues include the product ceasing to work after a period of use, unstable temperatures, excessive rotational noise, and even dangerous situations where circuit control fails, leading to extremely high temperatures that can melt the plastic.

In existing technology, the heating element and temperature sensor of automatic rotating hair curlers are set within the rotating parts. Their wires cannot be fixedly connected to the electric controller inside the handle. For the wires, typically, a structure of two sets of metal elastic contact pieces for sliding contact conductivity is employed. This structure often encounters issues in practical applications, such as deformation of the elastic contact pieces due to external force, reduced elasticity due to metal fatigue under long-term tension, and poor contact. This results in AC arcing that erodes the metal contact surfaces and lubricants, and causes the temperature sensor circuit to open or increase in error, ultimately reducing the reliability and safety of such products and leading to low user ratings.

Additionally, the automatic rotating hair curlers currently available on the market typically feature a single, fixed, non-detachable curling tube. Users cannot use one product to create different sizes of curls by replacing different curling tubes.

The disclosure aims to address the high failure rate of hair curlers and the inconvenience of replacing the curling tube in existing technology by proposing a new type of hair curler.

To achieve the above purpose, the following technical solutions are adopted:

A hair curler, comprising a handle part and a curling part rotatably connected to one end of the handle part. The curling part includes a heating tube rotatably connected to one end of the handle part and a curling tube detachably connected to the heating tube. The handle part includes an outer shell and an inner shell rotatably connected within the outer shell, with the heating tube rotating synchronously with the inner shell. A conductive bearing is arranged between the outer shell and the inner shell.

To ensure stable conductivity, preferably, the conductive bearing includes an outer bearing and an inner bearing fitted within it. The outer circumferential surface of the outer bearing is in contact with the inner circumferential surface of the outer shell, and the inner circumferential surface of the inner bearing is in contact with the outer circumferential surface of the inner shell.

Further, an electric controller is arranged within the inner shell, and a control circuit board is arranged on the outer shell. The outer bearing and the inner bearing are electrically connected to the control circuit board and the electric controller, respectively.

To enhance rotational stability, preferably, the hair curler also includes a motor fixedly connected within the inner shell. The output end of the motor is fixedly connected to a gear, and an internal ring gear is fixedly connected within the outer shell. The gear meshes with the internal ring gear, and the axis of the gear does not coincide with the axis of the internal ring gear.

To facilitate hair clamping, preferably, the hair curler also includes an installation ring nested on the curling tube, a pressing plate rotatably connected to the installation ring, and a torsion spring. A clamping plate is fixedly connected to the pressing plate, and the clamping plate is in contact with the outer circumferential surface of the curling tube. The torsion spring has one end detachably connected to the outer circumferential surface of the installation ring, and a roller is arranged at the other end of the torsion spring. The roller is in contact with the pressing plate.

Preferably, the inner shell extends to one end of the outer shell and is provided with a mounting seat. A connecting seat is arranged within the mounting seat, and one end of the heating tube is fixedly connected to the connecting seat.

To enhance the curling effect, preferably, an installation hole is provided within the curling tube. A heat-conducting chamber is arranged between the installation hole and the outer circumferential surface of the curling tube. A clamping strip is arranged within the installation hole, and a clamping groove is provided on the outer circumferential surface of the heating tube to match the clamping strip.

Further, the hair curler also includes a pressing piece sleeved on the end of the curling tube. A screw rod is fixedly connected to the pressing piece, and the threaded end of the screw rod matches the heating tube.

Preferably, a wiring base is provided at the end of the inner shell away from the heating tube. The wiring base is rotatably fitted with an external connecting wire.

Compared with existing technology, the disclosure provides a hair curler with the following beneficial effects:

1. With the hair curler, the stability of electrical signal transmission between the outer bearing and the inner bearing through the conductive bearing is ensured, and errors can be minimized. Additionally, the conductive bearing provides support for the inner shell rotating within the outer shell, which guarantees smooth rotation and makes the curling operation safer and more reliable.

2. With the hair curler, timely and reliable data transmission of electrical signal and temperature sensor is achieved by electrically connecting the outer bearing and the inner bearing to the control circuit board and the electric controller, respectively, and by directly connecting the temperature sensor and electric controller with wires.

3. With the hair curler, the user can press down the pressing plate, causing the clamping plate to lift. Then, the hair is wrapped around the curling tube. By releasing the pressing plate, the clamping plate presses against the outer surface of the curling tube, securing the hair in place and completing the curling operation.

4. With the hair curler, different-sized curling tubes can be fast changed using the clamping strip, and the locking mechanism between the pressing piece and the heating tube prevents the installed curling tube from loosening or falling off during curling, ensuring reliability and safety.

5. With the hair curler, the requirements of high voltage and high current for the heating element circuit, and stable and accurate temperature sensor measurements can be met. By eliminating the risk of arcing and open circuits associated with spring contacts, the safety and reliability of the product are significantly improved. The handle part is equipped with a rotating structure and control buttons, enabling automatic rotation of the hair curler. Additionally, multiple hollow curling tubes are provided, allowing users to easily detach, install, and replace them, facilitating styling with curling tubes of different diameters.

The parts of the hair curler not mentioned herein are the same as or can be realized by existing technology. The stability and accuracy of electrical signal transmission is effectively guaranteed as the handle part and the curling part are electrically controlled through the conductive bearing and are directly connected through wires. Moreover, open circuit or error occurrences during use are significantly reduced. The detachable curling tube can be replaced according to customer needs, effectively accommodating different sizes of curly hair styling.

In the figures:. Outer shell;, internal ring gear;. inner shell;, outer bearing;, inner bearing;, electric controller;, control circuit board;, wiring base;, clamping seat;, pressing plate;, clamping plate;, torsion spring;, roller;, curling tube;, installation hole;, clamping strip;, heat-conducting chamber;, pressing piece;, screw rod;, motor;, gear;, connecting seat;, heating tube.

The technical solutions in the embodiments of the disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the disclosure. It is obvious that the described embodiments are only part of the embodiments of the disclosure and not all of them.

In the description of the disclosure, it should be understood that the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “top”, “bottom”, “inner”, “outer”, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings. These terms are merely for the convenience of describing the disclosure and simplifying the description and do not indicate or imply that the referred devices or elements must have a specific orientation or be constructed and operated in a specific orientation. Therefore, these terms should not be construed as limitations to the disclosure.

Referring to, a hair curler illustrated comprises a cylindrical handle part with a display and operation panel, and a curling part rotatably connected to the working end of the handle part. Specifically, the curling part includes an electrically operating heating tubethat is rotatably connected to the working end of the handle part and a detachable curling tubethat can be replaced on the heating tube. When a user holds the handle part, the curling tubecan be replaced with different sizes as needed for different hairstyles and can achieve rotational curling. The handle part comprises an outer shelland an inner shellrotatably connected within the outer shell. During operation, the heating tuberotates synchronously with the inner shellto curl the hair, and a conductive bearing is arranged between the outer shelland the inner shellto ensure the effectiveness of the electrical connection during the rotation of the heating tubeand the handle part.

In the above scheme, the handle part and the curling part, controlled by the power supply through the conductive bearing, and the direct wire connection effectively ensure the stability and accuracy of electrical signal transmission, significantly reducing the occurrence of open circuits or errors during use. The detachable curling tubecan be replaced according to customer needs, effectively meeting the requirements for different sizes of curling hairstyles.

The specific conductive bearing made of conductive materials includes an outer bearingand an inner bearingfitted within it, allowing relative rotation. The outer circumferential surface of the outer bearingis in contact with the inner circumferential surface of the outer shell, and the inner circumferential surface of the inner bearingis in contact with the outer circumferential surface of the inner shell. This ensures the stability of electrical signal transmission between the outer bearingand the inner bearing, errors are minimized, and support can be provided for the inner shellrotating within the outer shell, smooth rotation and safer and more reliable curling operation can be guaranteed.

Specifically, an electric controlleris installed inside the inner shellusing screws, and a control circuit boardis arranged on the outer shell. The electric controlleris connected to the heating tubeand the wiring baseusing wires. The electric controllerand the control circuit boardare connected through wires and the conductive bearing to control the rotation of the motorand the temperature of the heating tube.

To be specifically, the outer bearingand the inner bearingof the conductive bearing are respectively connected to the control circuit boardand the electric controllerthrough wires, ensuring the timeliness and reliability of electrical signal transmission. The heating tubeand the temperature sensor circuit transmit data to the electric controllervia wires, effectively ensuring temperature data accuracy.

Additionally, the hair curler includes a motorfixedly connected within the inner shell. The motor's output end is fixedly connected to a gear, and an internal ring gearis fixedly connected within the outer shell. The gearmeshes with the internal ring gear, and the axis of the geardoes not coincide with the axis of the internal ring gear. The inner shellextends to one end of the outer shelland is provided with a mounting seat. A connecting seatis arranged within the mounting seat, and one end of the heating tubeis fixedly connected to the connecting seat. When the handle part is held, the motoris activated to control the direction and speed of the heating tubethrough forward and reverse rotation, and the curling operation is completed.

In the above scheme, the hair curler also includes an installation ringnested on the curling tube, a pressing platerotatably connected to the installation ring, and a torsion spring. A clamping plateis fixedly connected to the pressing plate, and the clamping plateis in contact with the outer circumferential surface of the curling tube. The torsion springhas one end detachably connected to the outer circumferential surface of the installation ring, and a rolleris arranged at the other end of the torsion spring. The rolleris in contact with the pressing plate. The user can press down the pressing plate, causing the clamping plateto lift. Then, the hair is wrapped around the curling tube. By releasing the pressing plate, the clamping platepresses against the outer surface of the curling tube, securing the hair in place and completing the curling operation.

An installation holeis provided within the curling tube, with a heat-conducting chamberarranged between the installation holeand the outer circumferential surface of the curling tube. A clamping stripis arranged within the installation hole, and a clamping groove is provided on the outer circumferential surface of the heating tubeto match the clamping strip. A pressing piececan be installed at the end of the curling tube. The pressing pieceis fixedly connected to a screw rod, and the threaded end of the screw rodmatches the heating tube. This allows for the quick replacement of different-sized curling tubesusing the clamping strip, and the locking mechanism between the pressing pieceand the heating tubecan prevent the installed curling tubefrom loosening or falling off during curling, ensuring the reliability and safety of the curling process.

Refer to, where the end of the inner shellaway from the heating tubeis provided with a wiring base. The wiring baseis rotatably fitted with an external connecting wire. This means that when the inner shellrotates with the wiring base, the joint of the external connecting wire does not follow its rotation, providing power to the hair curler without the risk of wire tangling.

The wiring basecontains a circuit board connected to the electric controllervia wires. The electric controller is equipped with a power button for switching on and off and four LED indicators for adjusting the temperature settings, enhancing the convenience of use.

The above descriptions are merely the preferred specific embodiments of the disclosure. The embodiments are not meant to limit the protection scope of the disclosure. Any equivalents or changes made by those skilled of art within the technical scope disclosed by the disclosure shall fall into the protection scope of the disclosure.