Hair curler

Abstract

A hair curler includes a lengthwise handle; a transmission set contained in the handle and having a main driving axle that has one end exposed outside the handle; a rotating sleeve being rotatably mounted around the main driving axle; a first tong and a second tong each having a rear end connected to the rotating sleeve, wherein the first tong has the rear end provided with a lever so that when the lever is pressed, the first tong leaves from the second tong; and a right-rotation button and an left-rotation button being deposited in a front part of a lateral of the handle. Thereby, a user can use his/her single finger to make the tongs rotate in either direction by pressing the right-rotation button or the left-rotation button, or open or close the tongs by pressing the lever.

What is claimed is: 
     
         1 . A hair curler comprising:
 a handle being approximately lengthwise;   a transmission set having a motor, a reduction device and a main driving axle, the motor and the reduction device being contained in the handle, the reduction device being connected to a drive shaft of the motor, and the main driving axle having one end connected to the reduction device and an opposite end exposed outside the handle;   a rotating sleeve being rotatably mounted on a front end of the handle and connected to the end of the main driving axle exposed outside the handle, so that the rotating sleeve is driven by the main driving axle to rotate on a major axis of the handle;   a pair of tongs including a first tong and a second tong, the second tong having a rear end connected to the rotating sleeve, the first tong having a rear end pivotally connected to the rotating sleeve, each of the first tong and the second tong having a heater, and the first tong having the rear end thereof provided with a lever that extends outward and backward from the rear end of the first tong, so that when pressed, the lever makes the first tong swing outward and leave from the second tong;   an elastic member having one end abutting against the lever and an opposite end abutting against the rotating sleeve, and being enable to deform and store a restoring force when pressed;   a control circuit being contained in the handle and electrically connected to the motor and the heaters;   a right-rotation button and a left-rotation button being deposited in a front part of a lateral of the handle and electrically connected to the control circuit, and the right-rotation button being located at a right side of the major axis of the handle while the left-rotation button is located at a left side of the major axis of the handle; and   a power supply unit being contained in the handle and electrically connected to the control circuit.   
     
     
         2 . The hair curler of  claim 1 , further comprising a temperature-raising button and a temperature-lowering button that are deposited on the handle and electrically connected to the control circuit for controlling temperatures of the two heaters. 
     
     
         3 . The hair curler of  claim 1 , wherein the handle has a hanging hook deposited in a front part of a lateral of the handle opposite to the lateral having the right-rotation button and the left-rotation button. 
     
     
         4 . The hair curler of  claim 1 , wherein each of the first tong and the second tong has a flat surface so that the tongs closely contact each other with the two flat surfaces. 
     
     
         5 . The hair curler of  claim 1 , wherein the lever has a curved shape that has a curved surface protruding outward and formed with a toothed structure. 
     
     
         6 . The hair curler of  claim 1 , wherein the lever and the rotating sleeve each have a guiding post aligned with each other, while the elastic member is a spring having two ends thereof mounted around the guiding posts and thereby abutting against the lever and the rotating sleeve, respectively. 
     
     
         7 . The hair curler of  claim 1 , wherein the power supply unit is connected to a mains power.