Hair straightening structure with two sides capable of being stably opened and hairdressing device

Abstract

The utility model relates to the technical field of hairdressing supplies, and discloses a hair straightening structure with two sides capable of being stably opened and a hairdressing device.The hair straightening structure comprises a grab handle and a heating tube, the heating tube comprises a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are both connected with the grab handle in a hinged mode; the driving mechanism is used for driving the second clamping plate and the first clamping plate to rotate and open at the same time and comprises a transmission arm component; when external force drives the first clamping plate to rotate and open, the first clamping plate simultaneously drives the second clamping plate to rotate and open through the transmission arm component. Through the arrangement of the transmission arm part, transmission between the first clamping plate and the second clamping plate is more reliable, the first clamping plate and the second clamping plate can be stably opened at the same time, the problem that the two clamping plates cannot be normally opened is avoided, and the use experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of hairdressing products, in particular to a hair straightening structure and a hairdressing device with two sides capable of being stably opened. Background Art

[0002] The hair straightener in a hairdressing device is usually composed of two hinged clamps. When performing the hair straightening operation, the user presses a button to separate the two clamps and clamp the hair between them, then releases the button to clamp the hair with the two clamps, and then the user moves the hair straightener along the length of the hair to complete the hair straightening process. However, in the prior art, the clamps include a first clamp and a second clamp, and the two clamps are driven to open on both sides by pressing or sliding a button; but in some existing hair straightening structures that can achieve double-sided opening, the first clamp is driven to rotate and open by a button, and the first clamp and the second clamp are driven by gears. Due to the gap between the gears on the first clamp and the gears on the second clamp during the actual production process, and the wear between the gears during use, or deformation due to high temperature, etc., the first clamp cannot stably drive the second clamp to rotate, resulting in the problem that the second clamp cannot be opened normally, and the user experience is poor. Utility Model Content

[0003] In order to solve at least one aspect of the above problems, the utility model provides a double-sided straight hair structure that can be stably opened, including: a handle and a heating tube, the heating tube includes a first clamp and a second clamp, the first clamp and the second clamp are both hingedly connected to the handle; it also includes a driving mechanism for driving the second clamp and the first clamp to rotate and open at the same time, the driving mechanism includes a transmission arm component; when an external force drives the first clamp to rotate and open, the first clamp simultaneously drives the second clamp to rotate and open through the transmission arm component.

[0004] Optionally, the transmission arm component is disposed between the first clamping plate and the second clamping plate, one end of the transmission arm component is connected to the first clamping plate, and the other end of the transmission arm component is connected to the second clamping plate.

[0005] Optionally, one end of the transmission arm component is hingedly connected to the first clamping plate, and the other end of the transmission arm component is abutt-connected to the second clamping plate.

[0006] Optionally, the transmission arm component includes a first transmission arm and a second transmission arm movably connected to the first transmission arm.

[0007] Optionally, one end of the first transmission arm is hingedly connected to the first clamping plate, the other end of the first transmission arm is hingedly connected to one end of the second transmission arm, one end of the second transmission arm away from the first transmission arm is abuttedly connected to the second clamping plate, a pushing portion for abutting and pushing the second clamping plate is formed on the second transmission arm, and the middle portion of the second transmission arm is hingedly connected to the handle.

[0008] Optionally, one end of the first transmission arm rotates relative to the first clamping plate and abuts against each other at an extreme position, and the other end of the first transmission arm rotates relative to the second transmission arm and abuts against each other at an extreme position.

[0009] Optionally, a second hinge shaft is provided at the tail end of the first clamping plate, the first clamping plate includes a connecting rod for being integrally connected to the second hinge shaft, the connecting rod is inclined, a second hinge groove hinged to the second hinge shaft is provided at one end of the first transmission arm, and a first abutment portion and a second abutment portion for abutting and limiting the first clamping plate are respectively formed on both sides of the groove of the second hinge groove.

[0010] Optionally, a third hinge axis is provided at one end of the second transmission arm close to the first transmission arm, a third hinge groove corresponding to the third hinge axis is provided at one end of the first transmission arm close to the second transmission arm, a third abutment portion and a fourth abutment portion are respectively formed on both sides of the groove of the third hinge groove, and a limiting protrusion is provided on the second transmission arm, and the limiting protrusion is placed between the third abutment portion and the fourth abutment portion.

[0011] Optionally, an elastic member is provided between the first clamping plate and the second clamping plate, and the elastic member is used to drive the first clamping plate and the second clamping plate to rotate and close simultaneously.

[0012] Optionally, the driving mechanism further comprises a straight hair operation key movably connected to the handle, and when an external force presses the straight hair operation key, the straight hair operation key pushes the first clamping plate and the second clamping plate to rotate and open simultaneously.

[0013] Optionally, the driving mechanism further comprises a first gear and a second gear meshing with each other, wherein the first gear is arranged on the first clamping plate, and the second gear is arranged on the second clamping plate; when performing a hair straightening operation, the first clamping plate and the second clamping plate are meshed with each other by the first gear and the second gear to achieve simultaneous rotation and opening, and when hair is placed between the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate are meshed with each other by the first gear and the second gear to achieve simultaneous rotation and closing to clamp the hair, and move along the length direction of the hair to achieve the function of straightening the hair.

[0014] Compared with the prior art, the straight hair structure of the utility model can stably open on both sides. The utility model makes the transmission between the first clamping plate and the second clamping plate more reliable by setting a transmission arm component, so that the first clamping plate and the second clamping plate can be opened stably at the same time, and the problem that the two clamping plates cannot be opened normally is avoided, and the use experience is good; the transmission arm component includes a first transmission arm and a second transmission arm movably connected to the first transmission arm, and the transmission is carried out through two movable transmission arms, so the structure is simple and reliable, and the production cost is low; it can avoid that the rotation angle of the first transmission arm and the second transmission arm is too large to cause structural damage, and the structure is reliable; when the straight hair operation key is released, the first clamping plate and the second clamping plate are rotated and closed by the elastic force of the elastic member, which is convenient to use and labor-saving; through the first gear and the second gear, not only the first clamping plate and the second clamping plate can be opened at the same time, but also the first clamping plate and the second clamping plate can be closed at the same time, and through the transmission arm component, it is further ensured that the first clamping plate and the second clamping plate can be opened normally and stably.

[0015] In addition, the utility model provides a hairdressing device, comprising the above-mentioned double-sided hair straightening structure capable of being stably opened.

[0016] Compared with the prior art, the hairdressing device of the present invention and the above-mentioned hair straightening structure capable of stably opening have the same advantages over the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the hairdressing device of the utility model;

[0018] Figure 2 It is a cross-sectional view of the hairdressing device of the utility model;

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0020] Figure 4 It is a structural schematic diagram of a transmission arm component of an embodiment of the utility model;

[0021] Figure 5 This is a schematic structural diagram of a first transmission arm in an embodiment of the utility model;

[0022] Figure 6 This is a schematic structural diagram of the second transmission arm of an embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the first clamping plate of an embodiment of the utility model;

[0024] Figure 8 for Figure 7 Enlarged view of the middle C part;

[0025] Fig. 9This is a schematic diagram of the structure of the second clamping plate in an embodiment of the utility model;

[0026] Fig.10 This is a schematic diagram of the structure of the hinged plate of the utility model embodiment;

[0027] Fig.11 This is a schematic diagram of the structure of the first clamping plate and the second clamping plate of the embodiment of the utility model when they are opened;

[0028] Fig.12 for Fig.11 Enlarged view of the middle D part;

[0029] Explanation of the reference numerals: 1. handle; 101. hinge plate; 1011. first hinge groove; 2. heating tube; 21. first clamping plate; 211. first gear; 212. first curling plane; 22. second clamping plate; 221. second gear; 222. second curling plane; 4. circuit board; 5. first transmission arm; 51. second hinge groove; 511. limit block; 52. first abutment; 53. second abutment; 54. third hinge groove; 541. third abutment; 542. fourth abutment; 6. second transmission arm; 61. pushing part; 62. first hinge shaft; 63. third hinge shaft; 64. limit projection; 7. first hinge point; 8. second hinge point; 9. elastic member; 11. straight hair operation key; 12. installation positioning column; 13. second hinge shaft; 131. limit groove; 14. connecting rod. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] The utility model embodiment provides a double-sided hair straightening structure that can be stably opened. Figure 1-Figure 12, including: a handle 1 and a heating tube 2, the handle 1 is the handle part of the hairdressing device, and the user controls the entire device through the handle 1; the heating tube 2 is used to conduct heat energy to the hair to achieve the effect of perming and shaping; the heating tube 2 includes a first clamping plate 21 and a second clamping plate 22, the first clamping plate 21 and the second clamping plate 22 are both hingedly connected to the handle 1, a first hinge point 7 is provided between the first clamping plate 21 and the handle 1, and a second hinge point 8 is provided between the second clamping plate 22 and the handle 1; it also includes a driving mechanism for driving the second clamping plate 22 and the first clamping plate 21 to rotate and open at the same time, and the driving mechanism includes a transmission arm component; when an external force drives the first clamping plate 21 to rotate and open, the first clamping plate 21 simultaneously drives the second clamping plate 22 to rotate and open through the transmission arm component; transmission through the transmission arm component is more reliable and stable than gear transmission, avoiding the problem that the first clamping plate 21 and the second clamping plate 22 cannot be opened normally.

[0034] The utility model discloses a straight hair structure with bilateral stable opening, by arranging a transmission arm component, the transmission between the first clamping plate and the second clamping plate is more reliable, the first clamping plate and the second clamping plate can be stably opened at the same time, the problem that the two clamping plates cannot be opened normally is avoided, and the use experience is good; the transmission arm component comprises a first transmission arm and a second transmission arm movably connected to the first transmission arm, and the transmission is carried out through the two movable transmission arms, the structure is simple and reliable, and the production cost is low; the rotation angle of the first transmission arm and the second transmission arm is too large to cause structural damage, and the structure is reliable; when the straight hair operation key is released, the first clamping plate and the second clamping plate are rotated and closed by the elastic force of the elastic member, and the use is convenient and labor-saving; through the first gear and the second gear, not only the first clamping plate and the second clamping plate can be opened at the same time, but also the first clamping plate and the second clamping plate can be closed at the same time, and through the transmission arm component, it is further ensured that the first clamping plate and the second clamping plate can be opened normally and stably.

[0035] See also Figure 1-Figure 4, the transmission arm component is arranged between the first clamping plate 21 and the second clamping plate 22, one end of the transmission arm component is connected to the first clamping plate 21, and the other end of the transmission arm component is connected to the second clamping plate 22; the first clamping plate 21 and the second clamping plate 22 are of the same or similar shape and size, a circuit board 4 is arranged in the handle 1, the first clamping plate 21 is provided with a first curling plane 212 electrically connected to the circuit board 4, and the second clamping plate 22 is provided with a second curling plane 222 electrically connected to the circuit board 4, the first curling plane 212 and the second curling plane 222 both have a heating function, and the heating temperature can be changed by adjusting the temperature adjustment button to adapt to different hairstyles; the first curling plane 212 and the second curling plane 222 are arranged opposite to each other, when performing a straight hair operation, first press the straight hair operation key 11 to open the first clamping plate 21 and the second clamping plate 22 to each other, and put the hair on the first curling plane The hair straightening operation key 11 is released between the hair straightening plane 212 and the second hair curling plane 222, so that the first clamping plate 21 and the second clamping plate 22 are closed together, and the first hair curling plane 212 and the second hair curling plane 222 clamp the hair, and the hair straightening operation is realized by moving along the length direction of the hair; the hair is placed between the head end of the first clamping plate 21 and the head end of the second clamping plate 22 for straightening, and the transmission arm component is arranged between the tail end of the first clamping plate 21 and the tail end of the second clamping plate 22, and the tail end of the first clamping plate 21 and the tail end of the second clamping plate 22 are driven to move closer / open by external force, and the head end of the first clamping plate 21 and the head end of the second clamping plate 22 are controlled to open / close accordingly, which is similar to the principle of a lever; the opening / closing of the first clamping plate 21 and the second clamping plate 22 refers to the opening / closing between the head end of the first clamping plate 21 and the head end of the second clamping plate 22; Figure 2 As shown, the head end of the first clamping plate 21 is located at the left end, and the tail end of the first clamping plate 21 is located at the right end; the head end of the second clamping plate 22 is located at the left end, and the tail end of the second clamping plate 22 is located at the right end.

[0036] See also Figure 2-Figure 4One end of the transmission arm component is hingedly connected to the first clamping plate 21, so that one end of the transmission arm component can rotate relatively with the first clamping plate 21, and the other end of the transmission arm component is abutted and connected with the second clamping plate 22, and the other end of the transmission arm component pushes the second clamping plate 22 to rotate and open through the abutting portion, and the transmission is reliable; the transmission arm component includes a first transmission arm 5 and a second transmission arm 6 movably connected to the first transmission arm 5, and the transmission is carried out through two movable transmission arms, the structure is simple and reliable, and the production cost is low; one end of the first transmission arm 5 is hingedly connected to the first clamping plate 21, and the other end of the first transmission arm 5 is hingedly connected to one end of the second transmission arm 6, and the end of the second transmission arm 6 away from the first transmission arm 5 is abutted and connected with the second clamping plate 22, and the second transmission arm 6 is formed with a portion for abutting and pushing the second clamping plate The pushing portion 61 of the plate 22 is an arc-shaped protrusion, and the lower side of the tail end of the second clamping plate 22 abuts against the upper side of the pushing portion 61, so that the pushing portion 61 can push the second clamping plate 22; the middle part of the second transmission arm 6 is hinged on the handle 1, and the middle part of the second transmission arm 6 is the part between the two ends of the second transmission arm 6, so that when one end of the second transmission arm 6 is pressed down, the other end can be tilted upward, and the second clamping plate 22 is pushed to rotate and open through the tilted pushing portion 61, which is similar to the lever principle; a hinge plate 101 for hingedly connecting the second transmission arm 6 is provided on the handle 1, and first hinge shafts 62 are provided on both sides of the middle part of the second transmission arm 6, and the hinge plate 101 is provided with a first hinge groove 1011 corresponding to the first hinge shaft 62, and the hinge plate 101 is rotatably engaged in the first hinge groove 1011.

[0037] See also Figure 2-Figure 8, one end of the first transmission arm 5 rotates relative to the first clamping plate 21 and is limited by abutting each other at the extreme position, and the other end of the first transmission arm 5 rotates relative to the second transmission arm 6 and is limited by abutting each other at the extreme position, so as to avoid structural damage caused by excessive rotation angle of the first transmission arm 5 and the second transmission arm 6, and the structure is reliable; a second hinge shaft 13 is arranged at the tail end of the first clamping plate 21, and the first clamping plate 21 includes a connecting rod 14 for being integrally connected with the second hinge shaft 13, and the connecting rod 14 is arranged obliquely, and a hinge shaft 13 is arranged at one end of the first transmission arm 5 The second hinge groove 51 is connected to the first transmission arm 5, and the first abutting portion 52 and the second abutting portion 53 for abutting against the first clamping plate 21 are respectively formed on both sides of the groove of the second hinge groove 51; the second transmission arm 6 is provided with a third hinge shaft 63 at one end close to the first transmission arm 5, and the first transmission arm 5 is provided with a third hinge groove 54 corresponding to the third hinge shaft 63 at one end close to the second transmission arm 6, and the third abutting portion 541 and the fourth abutting portion 542 are respectively formed on both sides of the groove of the third hinge groove 54, and a limiting protrusion 64 is provided on the second transmission arm 6. The protrusion 64 is placed between the third abutment portion 541 and the fourth abutment portion 542; the second hinge groove 51 and the third hinge groove 54 are both C-shaped; a limit block 511 is arranged in the second hinge groove 51, and a limit groove 131 corresponding to the limit block 511 is arranged on the second hinge shaft 13, so that the second hinge shaft 13 and the first transmission arm 5 are not easily displaced in the axial direction of the second hinge shaft 13, thereby preventing the second hinge shaft 13 from being accidentally disengaged from the second hinge groove 51, and the structure is stable and reliable; a limit block 511 is arranged between the first clamping plate 21 and the second clamping plate 22 There is an elastic member 9, which is used to drive the first clamping plate 21 and the second clamping plate 22 to rotate and close at the same time. In this embodiment, the elastic member 9 is a compression spring, and the elastic member 9 is placed between the tail end of the first clamping plate 21 and the tail end of the second clamping plate 22. One end of the elastic member 9 abuts against the first clamping plate 21, and the other end of the elastic member 9 abuts against the second clamping plate 22. The first clamping plate 21 and the second clamping plate 22 are respectively provided with mounting positioning columns 12 for fitting the ends of the compression springs. The compression spring has a small pitch at both ends and a large pitch in the middle, so that the compression spring is firmly installed.

[0038] See also Figure 1 , Figure 2 , Fig.11 and Fig.12The driving mechanism also includes a straight hair operation key 11 movably connected to the handle 1, and the straight hair operation key 11 is hinged and exposed on the handle 1; when an external force presses the straight hair operation key 11, the straight hair operation key 11 pushes the first clamping plate 21 and the second clamping plate 22 to rotate and open at the same time; when the straight hair operation key 11 is released, the first clamping plate 21 and the second clamping plate 22 are rotated and closed by the elastic force of the elastic member 9, which is convenient to use and labor-saving; the driving mechanism also includes a first gear 211 and a second gear 221 that are meshed with each other, the first gear 211 is integrally formed on the first clamping plate 21, and the second gear 221 is integrally formed on the second clamping plate 22; when the straight hair operation is performed, the first clamping plate 21 and the second clamping plate 22 are mutually meshed by the first gear 211 and the second gear 221 to realize simultaneous rotation and opening, and the hair is ready to be cut. When placed between the first clamping plate 21 and the second clamping plate 22, the first clamping plate 21 and the second clamping plate 22 are meshed with each other through the first gear 211 and the second gear 221 to achieve simultaneous rotation and closing to clamp the hair, and move along the length direction of the hair to achieve the function of straightening the hair; through the first gear 211 and the second gear 221, not only the first clamping plate 21 and the second clamping plate 22 can be opened at the same time, but also the first clamping plate 21 and the second clamping plate 22 can be closed at the same time, and through the transmission arm component, it is further ensured that the first clamping plate 21 and the second clamping plate 22 are opened normally and stably, and the stroke for pressing the hair straightening operation key is shorter, the operation is more convenient, and the double-sided opening design allows a larger opening angle between the first clamping plate and the second clamping plate, which is convenient for clamping more hair in a larger range and more efficient.

[0039] Another embodiment of the utility model provides a hairdressing device, comprising the above-mentioned double-sided hair straightening structure capable of being stably opened.

[0040] The hairdressing device in this embodiment is provided with a transmission arm component, so that the transmission between the first clamping plate and the second clamping plate is more reliable, so that the first clamping plate and the second clamping plate can be opened stably at the same time, and the problem that the two clamping plates cannot be opened normally is avoided, and the use experience is good; the transmission arm component includes a first transmission arm and a second transmission arm movably connected to the first transmission arm, and the transmission is carried out through two movable transmission arms, so the structure is simple and reliable, and the production cost is low; it can avoid that the rotation angle of the first transmission arm and the second transmission arm is too large to cause structural damage, and the structure is reliable; when the straight hair operation key is released, the first clamping plate and the second clamping plate are rotated and closed by the elastic force of the elastic member, which is convenient and labor-saving to use; through the first gear and the second gear, not only the first clamping plate and the second clamping plate can be opened at the same time, but also the first clamping plate and the second clamping plate can be closed at the same time, and through the transmission arm component, it is further ensured that the first clamping plate and the second clamping plate can be opened normally and stably.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A double-sided straight hair structure that can be stably opened, comprising: A handle (1) and a heating tube (2), wherein the heating tube (2) comprises a first clamping plate (21) and a second clamping plate (22), characterized in that the first clamping plate (21) and the second clamping plate (22) are both hingedly connected to the handle (1); and further comprises a driving mechanism for driving the second clamping plate (22) and the first clamping plate (21) to rotate and open simultaneously, wherein the driving mechanism comprises a transmission arm component; when an external force drives the first clamping plate (21) to rotate and open, the first clamping plate (21) simultaneously drives the second clamping plate (22) to rotate and open through the transmission arm component.

2. The double-sided stable opening straight hair structure according to claim 1, characterized in that: The transmission arm component is arranged between the first clamping plate (21) and the second clamping plate (22), one end of the transmission arm component is connected to the first clamping plate (21), and the other end of the transmission arm component is connected to the second clamping plate (22).

3. The double-sided stable opening straight hair structure according to claim 2, characterized in that: One end of the transmission arm component is hingedly connected to the first clamping plate (21), and the other end of the transmission arm component is abutt-connected to the second clamping plate (22).

4. The double-sided stable opening straight hair structure according to claim 1, characterized in that: The transmission arm component comprises a first transmission arm (5) and a second transmission arm (6) movably connected to the first transmission arm (5).

5. The double-sided stable opening straight hair structure according to claim 4, characterized in that: One end of the first transmission arm (5) is hingedly connected to the first clamping plate (21), the other end of the first transmission arm (5) is hingedly connected to one end of the second transmission arm (6), one end of the second transmission arm (6) away from the first transmission arm (5) is abuttedly connected to the second clamping plate (22), a pushing portion (61) for abutting and pushing the second clamping plate (22) is formed on the second transmission arm (6), and the middle portion of the second transmission arm (6) is hingedly connected to the handle (1).

6. The double-sided stable opening straight hair structure according to claim 5, characterized in that: One end of the first transmission arm (5) rotates relative to the first clamping plate (21) and abuts against each other at an extreme position, and the other end of the first transmission arm (5) rotates relative to the second transmission arm (6) and abuts against each other at an extreme position.

7. The double-sided stable opening straight hair structure according to claim 4, characterized in that: A second hinge shaft (13) is arranged at the tail end of the first clamping plate (21), and the first clamping plate (21) includes a connecting rod (14) for being integrally connected to the second hinge shaft (13), and the connecting rod (14) is arranged at an angle, and a second hinge groove (51) hinged to the second hinge shaft (13) is arranged at one end of the first transmission arm (5), and a first abutting portion (52) and a second abutting portion (53) for abutting against and limiting the first clamping plate (21) are respectively formed on both sides of the groove of the second hinge groove (51).

8. The double-sided stable opening straight hair structure according to claim 4, characterized in that: A third hinge shaft (63) is arranged at one end of the second transmission arm (6) close to the first transmission arm (5); a third hinge groove (54) corresponding to the third hinge shaft (63) is arranged at one end of the first transmission arm (5) close to the second transmission arm (6); a third abutment portion (541) and a fourth abutment portion (542) are respectively formed on both sides of the groove of the third hinge groove (54); a limiting protrusion (64) is arranged on the second transmission arm (6); the limiting protrusion (64) is placed between the third abutment portion (541) and the fourth abutment portion (542).

9. The double-sided stable opening straight hair structure according to claim 1, characterized in that: An elastic member (9) is provided between the first clamping plate (21) and the second clamping plate (22), and the elastic member (9) is used to drive the first clamping plate (21) and the second clamping plate (22) to rotate and close simultaneously.

10. The double-sided stable opening straight hair structure according to claim 1, characterized in that: The driving mechanism further comprises a straight hair operation key (11) movably connected to the handle (1); when an external force presses the straight hair operation key (11), the straight hair operation key (11) pushes the first clamping plate (21) and the second clamping plate (22) to rotate and open simultaneously.

11. The double-sided stable opening straight hair structure according to any one of claims 1 to 10, characterized in that: The driving mechanism further comprises a first gear (211) and a second gear (221) which mesh with each other, wherein the first gear (211) is arranged on the first clamping plate (21), and the second gear (221) is arranged on the second clamping plate (22); when performing a hair straightening operation, the first clamping plate (21) and the second clamping plate (22) are meshed with each other through the first gear (211) and the second gear (221) to simultaneously rotate and open; when hair is placed between the first clamping plate (21) and the second clamping plate (22), the first clamping plate (21) and the second clamping plate (22) are meshed with each other through the first gear (211) and the second gear (221) to simultaneously rotate and close to clamp the hair, and move along the length direction of the hair to achieve the function of straightening the hair.

12. A hairdressing device, characterized in that: It comprises the straight hair structure with double sides capable of being stably opened as described in any one of claims 1-11.

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