WO2015176399A1 - Hair straightening method and device - Google Patents

Abstract

A hair straightening method and a device comprising: a main handle (1) and an auxiliary handle (2); the main handle (1) is internally provided with a rotatable heating roller (71); the auxiliary handle (2) is internally provided with a second rotatable heating roller (72); the hair straightener is internally provided with a motor (5) having a drive gear (60); the drive gear (60) is connected to drive a first gear (61); the second rotatable heating roller (72) is connected to a second gear (62); when the auxiliary handle (2) has closed contact with the main handle (1), the second gear (62) is engaged with the first gear (61); the first rotatable heating roller (71) and the second rotatable heating roller (72) are employed to clamp the hair, and the hair is permed by being rolled between the rollers, such that the hair is not damaged by dragging force, thus protecting the hair, and the method is easy to operate because the clamping force applied on the hair between the rollers is easy to control.

Description

 Method and device for straight hair

 BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to hair cutting tools, and more particularly to a method and apparatus for ironing and straightening curled hair. Background technique

 In the prior art, there have been many methods and tools for curling hair, and the present invention will not comment on them.

 Often, there are people who need to straighten curly hair. At this time, the most common hair straightener is a metal arc-faced body with two heats, holding the hair to be straight, and then slowly squeezing straight The hair is made to slide the hair from the two metal faces. The curled hair is turned into a straight hair, for example, as shown in Figure 1, Shenzhen Huaxingmei Technology Co., Ltd. Chinese Utility Model Patent No. 201120324557. The technical solution named "straight hair straightener" is like this.

 This tool has a drawback: the clamping force of two hot metal arc faces can not be too large or small, the clamping force is large, and the force of the hair straightener is large, one is to burn the hair, and the other is to put the hair Suddenly, these two consequences are the user's fear.

 The clamping force is small, the hair is taken once in the hair straightener, and the straight hair is ineffective, and the user will not be satisfied with the result. Therefore, the skill of the operator is very important. However, for those who do not use the tool often, it is not willing to train with their precious hair.

 In order to obtain a satisfactory straight hair effect, people have been researching and improving the straight hair tool, for example, the Chinese patent application No. 201310087267. 4 to the American of Dana Stori, discloses a method for straightening or flattening. Hair straightening and flattening device for hairy, thick, ethnic, curly, entangled hair, the technical solution comprising two arms pivotally connected at one end. The arms can have opposing surfaces that can be heated. The heated surface may be one or two, the surface having a plurality of rows of closely spaced parallel blade-like tips extending from one side to substantially the entire width of the other side of the device. The hair straightening device can have at least two different temperature profiles selectable by the user. In some embodiments, one temperature profile can be lower than the other two gears and is at a temperature that is not optimal for straightening the hair. The other two temperature steps can be set to the optimum temperature for straightening different types of hair.

 Wherein the heated surfaces of the first and second arms are in various devices currently used to shape the hair, such as curling irons, curling irons, irons, hair straighteners, hair dryers

Wait. Many of these devices heat the surface of the device that contacts the hair by incorporating an internal or external source of heat to treat or shape the hair. The disadvantages of the above-mentioned comparison documents are: The device itself cannot be heated, and it is used together with other heat-generating tools during use, which brings a lot of inconvenience to the use.

 A further comparative technical document is the Chinese invention patent application No. 200780043109.1, the applicant being Royal Philips Electronics Co., Ltd., the technical solution of the patent application is: The invention relates to a straight hair device, the device comprising: an air inlet a portion for receiving a flow of air having a first direction; a brush or comb having a plurality of tines and for moving in a moving direction; and means for redirecting the airflow to the second direction, wherein the direction of movement The angle sandwiched by the two directions is less than 50 degrees, preferably less than 30 degrees.

 It can be seen from the technical solution of the patent application that the device is also used by other devices, and is only suitable for straightening or flattening the hairy, thick, ethnic, curly, entangled hair. Straightening flattening device with very short curly hair is not suitable for long, wavy hair.

 Except for the first comparative technique introduced in this section, no very satisfactory solution was found. Summary of the invention

 In order to solve the technical problems existing in the prior art, the present invention proposes a straight hair method and apparatus.

 The invention uses a heated roller to hold the hair, and then the hair is rolled in the roller to heat the hair, and the hair is not damaged by the pulling force, thereby protecting the hair intact.

 The invention is achieved by adopting the following technical solutions:

 The first straight hair method includes the following steps:

 1) First, a hand-held hair straightener is prepared, the hair straightener has a main handle and a sub-handle, the main handle carries a first rotatable heat-generating roller; the auxiliary handle carries a second rotatable heat-generating roller;

2), then providing a first rotating shaft in the first rotatable heat generating roller, the first rotating shaft being hollow;

3), then setting a first heat pipe inside the first rotating shaft; the first heat pipe does not rotate with the first rotating shaft;

 4), and then wrap the first rubber roller body outside the first rotating shaft;

 5), then setting the first bearing and the second bearing to carry the first rotating shaft to rotate freely;

 6) Next, a second rotating shaft is disposed in the second rotatable heat generating roller, and the second rotating shaft is hollow;

7) then setting a second heat pipe inside the second rotating shaft; the second heat pipe does not rotate with the second rotating shaft;

8), and then wrapping the second rubber roller body outside the second rotating shaft;

 9), then setting the third bearing and the fourth bearing to carry the second rotating shaft to rotate freely;

 10), then setting a hair straightener accessory, the hair straightener accessory comprises: a circuit board, the circuit board is linked with the first heat pipe and the second heat pipe; the circuit board also links the power line and the operation key group.

The second straight hair method includes the following steps: 1) First, a hand-held hair straightener is prepared, the hair straightener has a main handle and a sub-handle, the main handle carries a first rotatable heat-generating roller; the auxiliary handle carries a second rotatable heat-generating roller;

2), then setting a first rotating shaft in the first rotatable heat generating roller;

 3), then setting a first heating element outside the first rotating shaft;

 4), and then wrapping the first rubber roller body outside the first heating element;

 5), then setting the first bearing and the second bearing to carry the first rotating shaft to rotate freely;

 6), then providing a first armature at the end of the first rotating shaft, and connecting the two leads of the first heating element with the first armature;

 7), then setting the first brush to contact the first armature;

 8), next, a second rotating shaft is disposed in the second rotatable heat generating roller;

 9), then placing a second heating element outside the second rotating shaft;

 10), and then wrapping the second rubber roller body outside the second heating element;

 11), then setting the third bearing and the fourth bearing to carry the second rotating shaft to rotate freely;

 12), then providing a second armature at the end of the second rotating shaft, linking the two leads of the second heating element with the second armature;

 13), then setting the second brush to contact the first armature;

 14), then set the hair straightener attachment.

 The second straight hair method as described above, the hair straightener accessory comprises: a circuit board, the circuit board links the first brush, the second brush; the circuit board also links the power line and the operation key group.

 A third straight-through method, the method comprising the following steps:

 1), firstly preparing a hand-held hair straightener, the hair straightener has a main handle and a sub-handle, the first handle is provided with a first rotatable heat-generating roller, and the second handle is provided with a second rotatable heat-generating roller;

 2), then providing a first heat-generating tube in the first rotatable heat-generating roller, the first rotatable heat-generating roller being connected to the first gear;

 3), then providing a motor in the main handle, the motor has a drive gear, the drive gear is connected to drive the first gear;

 4), then providing a second heating tube in the second rotatable heating roller;

 5), then connecting the second rotatable heat roller to the second gear;

 6), then connecting a connecting shaft between the main handle and the sub-handle, so that the movable cover covering the second rotatable heat-generating roller is opened or closed by the connecting shaft relative to the main handle;

7), then, when the movable cover is in close contact with the main handle, the second gear is disposed to mesh with the first gear; 8), then connecting the first heating tube, the second heating tube, the motor and the circuit board, and the circuit board is further connected with an operation key group and an external power line;

 9), when performing the direct hair operation, turn on the power, clamp the first rotatable heat roller and the second rotatable heat roller on the main handle and the movable cover, and then operate the operation key group, the first hair The heat pipe and the second heat pipe heat up, the motor runs, the first rotatable heat roller and the second rotatable heat roller rotate opposite to each other, and the hair is rolled and ironed straight.

 Alternatively, in the third straight hair method: Step 9) before the first rotatable heat generating roller and the second rotatable heat generating roller pinch the hair, the operation key group has been operated to make the first heat generating tube and The second heating tube is heated;

 Step 9) The first rotatable heat generating roller and the second rotatable heat generating roller are rotated in opposite directions, and the rotation speed is between 40 rpm and 100 rpm.

 The operation key group includes a button for adjusting the rotation speed of the motor and a button for adjusting the heat generation of the first heat pipe and the second heat pipe.

 A device for designing a straight hair according to a third method, the device comprising:

 a main handle and a sub-handle, the end of the main handle is provided with a first rotatable heat-generating roller;

 a first heat generating tube is disposed in the first rotatable heat generating roller, and the first rotatable heat generating roller is connected to the first gear;

 a motor is disposed in the hair straightener, the motor has a driving gear, the driving gear is connected to drive the first gear; a movable cover is connected at an end of the auxiliary handle, and the movable cover covers the second rotatable heat generating roller;

 a second heat generating tube is disposed in the second rotatable heat generating roller, and the second rotatable heat generating roller is connected to the second gear;

 a connecting shaft is disposed between the main handle and the auxiliary handle, and the movable cover is opened or closed with respect to the main handle by the connecting shaft;

 When the movable cover is in close contact with the main handle, the second gear meshes with the first gear; the first heat generating tube, the second heat generating tube, and the motor are connected to the circuit board, and the circuit board is further connected with an operation key group and External power cord.

 The operation key group includes a button for adjusting the rotation speed of the motor and a button for adjusting the heat generation of the first heat pipe and the second heat pipe; and the lock button is disposed between the main handle and the movable cover to lock the lock button.

 A device for designing a straight hair according to the first method, the device comprising:

 The hair straightener includes a main handle and a sub-handle, the main handle carries a first rotatable heat-generating roller; the auxiliary handle carries a second rotatable heat-generating roller;

a first rotating shaft is disposed in the first rotatable heat generating roller, the first rotating shaft is hollow; a first heating tube is disposed in a center of the first rotating shaft; and the first heating tube does not follow the first rotating shaft Rotate

 The first rotating shaft is wrapped with the first rubber roller body;

 Providing a first bearing and a second bearing to carry the first rotating shaft to rotate freely;

 Providing a second rotating shaft in the second rotatable heat generating roller, wherein the second rotating shaft is hollow;

 a second heating tube is disposed on the inner core of the second rotating shaft; the second heating tube does not rotate with the second rotating shaft;

 The second rotating shaft is wrapped with a second rubber roller body;

 Providing a third bearing and a fourth bearing to carry the second rotating shaft to rotate freely;

 The hair straightener accessory is disposed in the main handle and the auxiliary handle, and the hair straightener accessory comprises: a circuit board, the circuit board is connected with the first heat generating tube and the second heat generating tube; and the circuit board further links the power line and the operation key group.

 A device for designing a straight hair according to the second method, the device comprising:

 a main handle and a sub-handle, the main handle carrying a first rotatable heat generating roller; the auxiliary handle carrying a second rotatable heat generating roller;

 a first rotating shaft is disposed in the first rotatable heat generating roller;

 a first heating element is disposed outside the first rotating shaft;

 The first heating element is wrapped around the first rubber roller body;

 Providing a first bearing and a second bearing in the main handle to carry the first rotating shaft to rotate freely;

 a first armature is disposed at the end of the first rotating shaft, and two leads of the first heating element are coupled to the first armature; and the first brush is disposed in contact with the first armature;

 a second rotating shaft is disposed in the second rotatable heat generating roller;

 a second heating element is disposed outside the second rotating shaft;

 The second heating element is wrapped on the outside of the second rubber roller body;

 Providing a third bearing and a fourth bearing in the auxiliary handle to carry the second rotating shaft to rotate freely;

 a second armature is disposed at the end of the second rotating shaft, and two leads of the second heating element are coupled to the second armature; and the second brush is disposed in contact with the first armature;

 Set the hair straightener attachment in the main handle or sub-handle.

 The hair straightener accessory comprises: a circuit board, the circuit board is linked with the first brush and the second brush; and the circuit board further links the power line and the operation key group.

 Compared with the prior art, the advantages of the present invention are:

 First, the hair is held by the hot roller, and then the hair is rolled in the roller to heat the hair. The hair is not damaged by the pulling force, and the hair is intact.

Second, the clamping force of the hair in the roller is easy to grasp, so the invention has the characteristics of simple operation. DRAWINGS

 1 is a schematic view of a prior art hair straightener;

 2 is a schematic view of a method and apparatus for direct hairing of the present invention;

 3 is a schematic view of a method and apparatus for straight hair according to the first embodiment of the present invention; FIG. 4 is a schematic view of a free-rotating rotatable heat-generating roller of the present invention; FIG. Figure 5 is a schematic view showing the main handle and the sub-handle in the third method of the method and apparatus for straight hair according to the present invention; Figure 6 is a schematic view showing the method and device operation key group 3 and the display screen 4 of the direct hair method of the present invention;

 7 is a schematic view showing the opening of the main handle and the auxiliary handle in the third method of the method and apparatus for straight hair according to the present invention. detailed description

 In order to further illustrate the method of the present invention, the present invention will be described in detail with reference to the three preferred embodiments of the present invention shown in the accompanying drawings. range.

 The first straight hair method is implemented. As shown in FIG. 2 and FIG. 3, the method includes:

 1) First, a hand-held hair straightener is prepared, the hair straightener has a main handle 1 and a sub-handle 2, the main handle 1 carries a first rotatable heat-generating roller 71; the second handle 2 carries a second Rotating the heat roller 72;

 2), then a first rotating shaft 711 is disposed in the first rotatable heat generating roller 71, and the first rotating shaft 711 is hollow;

 3), then the first heating tube 81 is disposed inside the first rotating shaft 711; the first heating tube 81 does not rotate with the first rotating shaft 711;

 4), then wrap the first rubber roller body 715 outside the first rotating shaft 711;

 5), then setting the first bearing 712 and the second bearing 713 to carry the first rotating shaft 711 to rotate freely;

6) Next, a second rotating shaft 721 is disposed in the second rotatable heat generating roller 72, and the second rotating shaft 721 is hollow;

 7) then providing a second heating tube 82 in the center of the second rotating shaft 721; the second heating tube 82 does not rotate with the second rotating shaft 721;

 8), and then wrapped around the second shaft 721 second rubber roller body 725;

 9), then setting the third bearing 722 and the fourth bearing 723 to carry the second rotating shaft 721 to rotate freely; 10), and then setting a hair straightener attachment, the hair straightener attachment comprising: a circuit board 15, the circuit board 15 is linked first The heating pipe 81 and the second heating pipe 82; the circuit board 15 also links the power supply line and the operation key group 3.

As shown in FIG. 2 and FIG. 4, a method for implementing a second straight hair method includes the following steps: 1) First, a hand-held hair straightener is prepared, the hair straightener has a main handle 1 and a sub-handle 2, the main handle 1 carries a first rotatable heat-generating roller 71; the second handle 2 carries a second Rotating the heat roller 72;

 2), then providing a first rotating shaft 711 in the first rotatable heat roller 71;

 3), then the first heating element 714 is disposed outside the first rotating shaft 711;

 4), then wrapped around the first heating element 714 first rubber roller body 715;

 5), then the first bearing 712 and the second bearing 713 are disposed to carry the first rotating shaft 711 to rotate freely; 6), then the first armature 716 is disposed at the end of the first rotating shaft 711, and the two leads of the first heating element 714 are Linking with the first armature 716;

 7), then setting the first brush 717 to contact the first armature 716;

 8) Next, a second rotating shaft 721 is disposed in the second rotatable heat generating roller 72;

 9), then a second heating element 724 is disposed outside the second shaft 721;

 10), and then wrapped around the second heating element 724 second rubber roller body 725;

 11), then setting the third bearing 722 and the fourth bearing 723 to carry the second rotating shaft 721 to rotate freely;

12), then providing a second armature 726 at the end of the second rotating shaft 721, linking the two leads of the second heating element 724 with the second armature 726;

 13), then setting the second brush 727 to contact the first armature 726;

 14), then set the hair straightener attachment.

 In the second straight hair method, the hair straightener accessory comprises: a circuit board 15, the circuit board 15 links the first brush and the second brush 727; the circuit board 15 also links the power line and the operation key group 3.

 As shown in FIG. 5 to FIG. 7, a third straight-through method is implemented, and the method includes the following steps:

 1) First, a hand-held hair straightener is prepared. The hair straightener has a main handle 1 and a sub-handle 2, wherein the main handle 1 is provided with a first rotatable heat-generating roller 71, and the second handle 2 is provided with a second Rotating the heat roller 72;

 2), then a first heat generating tube 81 is disposed in the first rotatable heat generating roller 71, the first rotatable heat generating roller

71 is connected to the first gear 61;

 3), then set the motor 5 in the main handle 1, the motor 5 has a drive gear 60, the drive gear 60 is connected to drive the first gear 61;

 4), then in the second rotatable heat roller 72 is provided a second heat pipe 82;

 5), then connecting the second rotatable heat roller 72 to the second gear 62;

6), then connecting a connecting shaft between the main handle 1 and the sub-handle 2, so that the movable cover 21 covering the second rotatable heat-generating roller 72 is opened or closed relative to the main handle 1 by means of the connecting shaft; 7), then when the movable cover 21 is in close contact with the main handle 1, the second gear 62 is arranged to mesh with the first gear 61.

 8), then connecting the first heating tube 81, the second heating tube 82, and the motor 5 to the circuit board 15, and the circuit board 15 is further connected with the operation key group 3 and an external power supply line;

 9), when performing the direct hair operation, turning on the power, clamping the first rotatable heat roller 71 and the second rotatable heat roller 72 on the main handle 1 and the movable cover 21, and then operating the operation key group 3. The first heat generating tube 81 and the second heat generating tube 82 generate heat, the motor 5 operates, the first rotatable heat generating roller 71 and the second rotatable heat generating roller 72 rotate in opposite directions, and the hair is rolled and ironed straight.

 Alternatively, before the first rotatable heat generating roller 71 and the second rotatable heat generating roller 72 of the step 9 are sandwiched between the hair, the operation key group 3 has been operated to heat the first heat generating tube 81 and the second heat generating tube 82.

 The first rotatable heat generating roller 71 and the second rotatable heat generating roller 72 are operated in opposite directions, and the rotational speed is between 40 rpm and 100 rpm.

 The operation key group 3 includes a button for adjusting the rotation speed of the motor 5 and a button for adjusting the heat generation of the first heat-generating tube 81 and the second heat-generating tube 82.

 A device for designing a straight hair according to a third method, the device comprising:

 a main handle 1 and a sub-handle 2, the end of the main handle 1 is provided with a first rotatable heat roller 71;

 a first heat generating tube 81 is disposed in the first rotatable heat generating roller 71, and the first rotatable heat generating roller 71 is connected to the first gear 61;

 a motor 5 is disposed in the hair straightener, the motor 5 has a drive gear 60, and the drive gear 60 is connected to drive the first gear 61;

 The movable cover 21 is connected to the end of the auxiliary handle 2, and the movable cover 21 covers the second rotatable heat generating roller 72;

 a second heat generating tube 82 is disposed in the second rotatable heat generating roller 72, and the second rotatable heat generating roller 72 is connected to the second gear 62;

 A connecting shaft is disposed between the main handle 1 and the sub-handle 2, and the movable cover 21 is opened or closed with respect to the main handle 1 by means of the connecting shaft;

 When the movable cover 21 is in close contact with the main handle 1, the second gear 62 meshes with the first gear 61; the first heat generating tube 81, the second heat generating tube 82, and the motor 5 are connected to the circuit board 15, and the circuit The board 15 is also connected to the operation key group 3 and an external power supply line.

 The operation key group 3 includes a button for adjusting the rotation speed of the motor 5 and a button for adjusting the heat generation of the first heat-generating tube 81 and the second heat-generating tube 82. The lock button 12 is disposed between the main handle 1 and the movable cover 21. Lock the lock button 11.

A device for designing a straight hair according to the second method, as shown in FIG. 2 and FIG. 4, the device includes: a main handle 1 and a sub-handle 2, the main handle 1 carries a first rotatable heat roller 71; the sub-handle 2 carries a second rotatable heat roller 72;

 a first rotating shaft 711 is disposed in the first rotatable heat generating roller 71;

 a first heating element 714 is disposed outside the first rotating shaft 711;

 The first heating element 714 is wrapped around the first rubber roller body 715;

 The first bearing 712 and the second bearing 713 are disposed in the main handle 1 to carry the first rotating shaft 711 to rotate freely; the first rotating shaft 711 is provided with a first armature 716 at the end, and the two lead wires of the first heating element 714 are The first armature 716 is linked;

 The first brush 717 is disposed in contact with the first armature 716;

 a second rotating shaft 721 is disposed in the second rotatable heat generating roller 72;

 a second heating element 724 is disposed outside the second rotating shaft 721;

 The second heating element 724 is wrapped around the second rubber roller body 725;

 A third bearing 722 and a fourth bearing 723 are disposed in the sub-handle 2 to carry the second rotating shaft 721 to rotate freely; a second armature 726 is disposed at the end of the second rotating shaft 721, and two leads of the second heating element 724 are disposed. Linked to the second armature 726;

 The second brush 727 is disposed in contact with the first armature 726;

 The hair straightener attachment is set in the main handle 1.

 The hair straightener accessory comprises: a circuit board 15, the circuit board 15 links the first brush 717, the second brush 727; the circuit board 15 also links the power line and the operation key group 3.

 A device for designing a straight hair according to the first method, as shown in Fig. 2 and Fig. 3,

The hair straightener includes a main handle 1 and a sub-handle 2, the main handle 1 carries a first rotatable heat-generating roller 71; the sub-handle 2 carries a second rotatable heat-generating roller 72;

 A first rotating shaft 711 is disposed in the first rotatable heat generating roller 71, and the first rotating shaft 711 is hollow; a first heat generating tube 81 is disposed in a center of the first rotating shaft 711; the first heat generating tube 81 does not follow the first rotating shaft 711. Rotating; the first rotating shaft 711 is wrapped around the first rubber roller body 715;

 The first bearing 712 and the second bearing 713 are disposed to carry the first rotating shaft 711 to rotate freely;

 a second rotating shaft 721 is disposed in the second rotatable heat generating roller 72, wherein the second rotating shaft 721 is hollow; the second rotating shaft 721 is provided with a second heat generating tube 82; the second heat generating tube 82 does not follow the second rotating shaft 721 rotation;

 The second rotating shaft 721 is wrapped with a second rubber roller body 725;

The third bearing 722 and the fourth bearing 723 are disposed to carry the second rotating shaft 721 to rotate freely; The hair straightener attachment is disposed in the main handle 1 and the sub-handle 2, and the hair straightener accessory comprises: a circuit board 15, the circuit board 15 links the first heat-generating tube 81 and the second heat-generating tube 82; and the circuit board 15 also links the power source Line, operation key group 3.

 The design of the invention is reasonable and fine, and the hair is held by the heated roller, and then the hair is rolled in the roller to heat the hair, and the hair is not damaged by the pulling force, thereby protecting the hair intact.

 The method and apparatus of the present invention allow the gripping force of the hair in the roller to be easily grasped, so that the present invention has the advantage of being simple to operate.

 The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.

Claims

Claim A straight hair method, characterized in that the method comprises the following steps:  10) First, a hand-held hair straightener is prepared, the hair straightener has a main handle (1) and a sub-handle (2), and the main handle (1) carries a first rotatable heat-generating roller (71); The secondary handle (2) carries the second rotatable heat roller (72);  11), then providing a first rotating shaft (711) in the first rotatable heat generating roller (71), the first rotating shaft (711) being hollow;  12), then setting a first heating tube (81) in the inner center of the first rotating shaft (711); the first heating tube (81) does not rotate with the first rotating shaft (711);  13), then wrapping the first rubber roller body (715) outside the first rotating shaft (711);  14), then set the first bearing (712) and the second bearing (713) to carry the first rotating shaft (711) to rotate freely;  15) Next, a second rotating shaft (721) is disposed in the second rotatable heat generating roller (72), and the second rotating shaft (721) is hollow;  16) then placing a second heating tube (82) in the center of the second rotating shaft (721); the second heating tube (82) does not rotate with the second rotating shaft (721);  17), then wrapping the second rubber roller body (725) outside the second rotating shaft (721);  18), then set the third bearing (722) and the fourth bearing (723) to carry the second rotating shaft (721) to rotate freely;  19), and then setting a hair straightener accessory, the hair straightener accessory comprises: a circuit board (15), the circuit board (15) linking the first heat pipe (81), the second heat pipe (82); the circuit board (15) ) Also link the power cord and operation key group (3). A straight hair method, characterized in that the method comprises the following steps:  1) First, a hand-held hair straightener is prepared, the hair straightener has a main handle (1) and a sub-handle (2), and the main handle (1) carries a first rotatable heat-generating roller (71); The secondary handle (2) carries the second rotatable heat roller (72);  2), then a first rotating shaft (711) is arranged in the first rotatable heat roller (71);  3), then setting a first heating element (714) outside the first rotating shaft (711);  4), then wrapping the first rubber roller body (715) outside the first heating element (714); 5), then set the first bearing (712) and the second bearing (713) to carry the first rotating shaft (711) to rotate freely; 6), then providing a first armature (716) at the end of the first rotating shaft (711), and linking the two leads of the first heating element (714) with the first armature (716);  7), then set the first brush (717) to contact the first armature (716);  8), next, a second rotating shaft (721) is disposed in the second rotatable heat generating roller (72);  9), and then a second heating element (724) is disposed outside the second rotating shaft (721);  10), then wrapping the second rubber roller body (725) outside the second heating element (724);  11), then set the third bearing (722) and the fourth bearing (723) to carry the second rotating shaft (721) to rotate freely;  12), then providing a second armature (726) at the end of the second rotating shaft (721), linking the two leads of the second heating element (724) with the second armature (726);  13), then set the second brush (727) to contact the first armature (726);  14), and then set the hair straightener accessory, the hair straightener accessory comprises: a circuit board (15), the circuit board (15) links the first brush (717), the second brush (727); the circuit board (15 ) Also link the power cord and operation key group (3). A straight hair method, characterized in that the method comprises the following steps:  1) First, a hand-held hair straightener is prepared. The hair straightener has a main handle (1) and a sub-handle (2), and the first rotatable heat-generating roller (71) is disposed in the main handle (1). a second rotatable heat roller (72) is disposed in the auxiliary handle (2);  2), then a first heat generating tube (81) is disposed in the first rotatable heat generating roller (71), and the first rotatable heat generating roller (71) is coupled to the first gear (61);  3), then set the motor (5) in the main handle (1), the motor (5) has a drive gear (60), the drive gear (60) is connected to drive the first gear (61);  4), then a second heat generating tube (82) is disposed in the second rotatable heat generating roller (72);  5), then connecting the second rotatable heat roller (72) with the second gear (62);  6), then a connecting shaft is arranged between the main handle (1) and the sub-handle (2) so that the movable cover (21) covering the second rotatable heat-generating roller (72) is connected to the main handle (1) by means of the connecting shaft Or open or closed;  7), then, when the movable cover (21) is in close contact with the main handle (1), the second gear (62) is set to mesh with the first gear (61);  8), then connecting the first heating tube (81), the second heating tube (82), the motor (5) and the circuit board (15), and the circuit board (15) is further connected with an operation key group (3) And an external power cord; 9). When performing direct-spinning operation, turn on the power and turn the main handle (1) and the first cover on the movable cover (21). The heat roller (71) and the second rotatable heat roller (72) sandwich the hair, and then operate the operation key group (3), the first heat pipe (81) and the second heat pipe (82) are heated, and the motor (5) The first rotating heat roller (71) and the second rotatable heat roller (72) rotate in opposite directions, and the hair is rolled and ironed. 4. The method of straight hair according to claim 3, wherein:  Step 9) Before the first rotatable heat generating roller (71) and the second rotatable heat generating roller (72) clamp the hair, the operation key group (3) has been operated to make the first heat generating tube (81) and The second heat pipe (82) generates heat. 5. The method of straight hair according to claim 3, wherein:  Step 9) The first rotatable heat generating roller (71) and the second rotatable heat generating roller (72) are rotated in opposite directions, and the rotation speed is between 40 rpm and 100 rpm.  6. The method of straight hair according to claim 3, wherein:  The operation key group (3) includes a button for adjusting the rotation speed of the motor (5) and a button for adjusting the heat generation of the first heat pipe (81) and the second heat pipe (82).  7. A device for straight hair, characterized in that the device comprises:  a main handle (1) and a secondary handle (2), the end of the main handle (1)  Setting a first rotatable heat roller (71);  a first heat generating tube (81) is disposed in the first rotatable heat generating roller (71), and the first rotatable heat generating roller (71) is connected to the first gear (61);  a motor (5) is disposed in the hair straightener, the motor (5) has a drive gear (60), and the drive gear (60) is coupled to drive the first gear (61);  a movable cover (21) is coupled to the end of the sub-handle (2), and the movable cover (21) covers the second rotatable heat-generating roller (72);  a second heat generating tube (82) is disposed in the second rotatable heat generating roller (72), and the second rotatable heat generating roller (72) is coupled to the second gear (62);  A connecting shaft is disposed between the main handle (1) and the auxiliary handle (2), and the movable cover (21) is opened or closed with respect to the main handle (1) by means of the connecting shaft;  When the movable cover (21) is in close contact with the main handle (1), the second gear (62) is meshed with the first gear (61); the first heat pipe (81), the second heat pipe (82), The motor (5) is connected to the circuit board (15), and the circuit board (15) is further connected with an operation key group (3) and an external power supply line.  8. A device for straight hair, characterized in that: the hair straightener comprises a main handle (1) and a sub-handle (2), the main handle (1) carrying a first rotatable heat-generating roller (71); The secondary handle (2) carries the second rotatable heat roller (72); a first rotating shaft (711) is disposed in the first rotatable heat generating roller (71), and the first rotating shaft (711) is hollow;  a first heating tube (81) is disposed inside the first rotating shaft (711); the first heating tube (81) does not rotate with the first rotating shaft (711);  The first rotating shaft (711) is wrapped around the first rubber roller body (715);  The first bearing (712) and the second bearing (713) are disposed to carry the first rotating shaft (711) to rotate freely; and the second rotating shaft (721) is disposed in the second rotatable heating roller (72), the second rotating shaft ( 721) is hollow;  a second heating tube (82) is disposed inside the second rotating shaft (721); the second heating tube (82) does not rotate with the second rotating shaft (721);  The second rotating shaft (721) is wrapped with a second rubber roller body (725);  The third bearing (722) and the fourth bearing (723) are disposed to carry the second rotating shaft (721) to rotate freely; the main handle (1) and the auxiliary handle (2) are provided with a hair straightener attachment, and the hair straightener accessory The utility model comprises: a circuit board (15), a circuit board (15) linking the first heat generating tube (81) and a second heat generating tube (82); the circuit board (15) also linking the power line and the operation key group (3). 9. A device for straight hair, characterized in that:  The hair straightener comprises a main handle (1) and a sub-handle (2), the main handle (1) carrying a first rotatable heat-generating roller (71); the secondary handle (2) carrying a second rotatable heat Roller (72);  a first rotating shaft (711) is disposed in the first rotatable heat generating roller (71);  a first heating element (714) is disposed outside the first rotating shaft (711);  The first heating element (714) is wrapped around the first rubber roller body (715); a first bearing (712) and a second bearing (713) are disposed in the main handle (1) to carry the first rotating shaft (711) to rotate freely;  a first armature (716) is disposed at an end of the first rotating shaft (711), and two leads of the first heating element (714) are linked with the first armature (716);  Setting the first brush (717) to contact the first armature (716);  a second rotating shaft (721) is disposed in the second rotatable heat generating roller (72);  a second heating element (724) is disposed outside the second rotating shaft (721);  The second heating element (724) is wrapped around the second rubber roller body (725); a third bearing (722) and a fourth bearing (723) are disposed in the auxiliary handle (2) to carry the second rotating shaft (721) to rotate freely; a second armature (726) is disposed at an end of the second rotating shaft (721), and two leads of the second heating element (724) are linked with the second armature (726);  Setting a second brush (727) in contact with the first armature (726);  Set the hair straightener attachment in the main handle (1). 10. The device for straight hair according to claim 9, wherein the hair straightener attachment comprises: a circuit board (15), the circuit board (15) is linked to the first brush (717), and the second brush (727); The board (15) also links the power cord and the operating key set (3).