A torsion spring structure and hairdressing device thereof

Abstract

The utility model discloses a torsion spring structure and a hairdressing device thereof. The torsion spring structure comprises a fixing part, a force storage part and an elastic deformation part which are connected in sequence. The elastic deformation part is a curved structure and has a straight part and a bent part. The bent part is arranged at any position of the straight part. By changing the existing spring structure, bending the spring and making an avoidance design for the connecting shaft, the clamping force of the clip on the hair is increased, and the opening angle of the clip is increased, so as to realize a curling iron spring structure with a simple structure and the force required for opening the clip in a small space.

Description

Technical Field

[0001] The utility model relates to the technology of hairdressing products, and in particular to a hairdressing device with a torsion spring structure. Background Art

[0002] The hairdressing device is used to shape the hair to achieve hairdressing effects such as straight hair and curly hair. The invention patent with patent application number 200480028931.7 discloses a hair curling iron and shaping tool. It includes a handle and a spring assembly. The long transverse bending plate (also called a clip) is automatically reset by the spring assembly.

[0003] The traditional winder still has the following defects due to unreasonable structural design:

[0004] First, the traditional curling iron initially placed the torsion spring directly on the barrel, exposing the torsion spring directly on the surface, which is not aesthetically pleasing. Figure 1 and Figure 2 As shown in FIG. 1 , some improved curling irons have the torsion spring sunk into the barrel to maintain the beauty of the hair curling iron. Figure 3 As shown, the torsion spring of the improved curling iron is placed in the barrel, and still adopts the straight structure 1. The maximum torsion angle of the torsion spring is reduced due to the obstruction of the sinking depression in the natural state, resulting in a reduction in the clamping force of the hair. The clamping force of the curling iron is insufficient, affecting the user experience.

[0005] Both, such as Figures 1 to 3 As shown, in order to rotate the clip after sinking, a connecting shaft needs to be provided. The clips of the existing mainstream curling irons are all controlled by elastic button rings made of carbon steel wire to open and close the clips. Figure 1 The clamp is closed. Figure 2 When the clip is in the open state, the torsion spring of the straight structure is not designed to avoid the connecting shaft, and the connecting shaft hinders the straight spring. The torsion spring force is insufficient, resulting in the curling iron clip being unable to open or the opening angle being small, making it difficult to place the hair on the curling iron, which greatly affects the user experience of using the curling iron.

[0006] Therefore, the existing hair curlers have certain limitations. In order to solve the technical problem, it is necessary for those skilled in the art to further improve the hair curlers. Utility Model Content

[0007] In view of this, the present invention aims at the deficiencies of the prior art, and its main purpose is to provide a torsion spring structure and a hairdressing device thereof, which can enable the curling iron clip to have a larger opening angle and provide a greater clamping force, thereby overcoming the deficiencies of the prior art.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A torsion spring structure comprises a fixing part, a force storage part and an elastic deformation part which are connected in sequence. The elastic deformation part is a curved structure having a straight part and a bent part. The bent part is arranged at any position of the straight part.

[0010] As a preferred solution, the elastic deformation portion is any one of the following structures:

[0011] Structure 1, the elastic deformation portion comprises an A1 straight segment, an A2 bent segment, and an A3 straight segment sequentially extended and connected by the force storage portion, and the A2 bent segment is bent in a direction away from the compression space;

[0012] Structure 2, the elastic deformation portion comprises a B1 straight section, a B2 bent section, and a B3 straight section which are sequentially extended and connected by the force storage portion, and the B2 bent section is bent toward the direction of the compression space;

[0013] Structure three, the elastic deformation portion comprises a C1 straight section, a C2 bent section, a C3 bent section, and a C4 straight section sequentially extended and connected by the force storage portion, the C2 bent section bends in a direction away from the compression space, and the C2 bent section bends in a direction toward the compression space;

[0014] Structure four, the elastic deformation part has a D1 straight section, a D2 bending section, a D3 bending section, a D4 bending section, and a D5 straight section which are sequentially extended and connected by the force storage part, the D2 bending section and the D4 bending section are both bent in the direction away from the compression space, and the D3 bending section is bent in the direction of the compression space.

[0015] As a preferred solution, the bent portion is an arc bend.

[0016] As a preferred solution, the force storage part is a spiral structure connected between the fixing part and the elastic deformation part.

[0017] As a preferred solution, the torsion spring structure is a double torsion spring, the top ends of the elastic deformation parts are connected through a U-shaped connecting part, and balls are strung on the U-shaped connecting part.

[0018] A hairdressing device comprises a gripping handle, a heating rod and a clip. The heating rod is connected to one end of the gripping handle. The clip is rotatably mounted on the gripping handle, or the heating rod, or on a connecting seat between the gripping handle and the heating rod. The clip abuts against the torsion spring structure.

[0019] As a preferred solution, the connecting seat is provided with a sunken groove, and the fixing portion of the torsion spring structure is installed in the sunken groove.

[0020] As a preferred solution, the clamp is hinged to the connecting seat via a connecting shaft, and the bent portion of the torsion spring structure is arranged to avoid the connecting shaft.

[0021] As a preferred solution, when the elastic deformation portion is a straight structure, it has a point M that can contact the connecting axis in the compressed state, and the distance between the point M and the connecting axis in the non-compressed state is S; then

[0022] When the elastic deformation part is structure 1, the bending position of the A2 bending section is below point M. Point M shifts due to bending to form a new point M1. The distance between point M1 and the connecting axis is S1, S1>S.

[0023] When the elastic deformation part is structure 2, the bending position of the B2 bending section is at point M. Point M shifts due to bending to form a new point M2. The distance between point M2 and the connecting axis is S2, S2>S.

[0024] When the elastic deformation part is structure three, the bending position of the C2 bending section is below point M, and the bending position of the C3 bending section is on point M. Point M shifts due to bending to form a new point M3. The distance between point M3 and the connecting axis is S3, S3>S.

[0025] When the elastic deformation part is structure four, the bending position of the D2 bending section is below point M, the bending position of the D3 bending section is above point M, and the bending position of the D4 bending section is above point M. Point M shifts due to bending to form a new point M4. The distance between point M4 and the connecting axis is S4, S4>S.

[0026] As a preferred solution, the connecting axis of the clip is above the surface of the heating rod, and the fixed end of the torsion spring is sunken and installed in the lower groove so as to be located below the surface of the heating rod.

[0027] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that in specific use, the clips of the existing mainstream curling irons are controlled by elastic torsion springs made of carbon steel wire to control the opening and closing of the clips, and the elastic deformation part is usually designed in a straight line. However, due to the limitation of the product space and unreasonable design, the button ring strength is insufficient, and the curling iron clip cannot be opened or the opening angle is small, resulting in abnormal use, so it has certain limitations. The utility model changes the existing spring structure, bends the spring, and avoids the connection shaft, thereby increasing the clamping force of the clip on the hair and increasing the opening angle of the clip to achieve a curling iron spring structure with a simple structure that can achieve the required force to open the clip in a small space.

[0028] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a cross-sectional view of a conventional curling iron, with the clip in a closed state and the corresponding torsion spring not compressed.

[0030] Figure 2 It is a cross-sectional view of a conventional curling iron, wherein the clip is in an open state, the corresponding torsion spring is compressed, and the M point of the torsion spring contacts the connecting shaft.

[0031] Figure 3 It is a schematic diagram of the torsion spring of a traditional curling iron, which is a straight-running structure.

[0032] Figure 4 It is a graph showing the amplitude variation of the torsion spring of a traditional curling iron in the closed and open states of the clip, with the angle of variation being θ.

[0033] Figure 5 It is a cross-sectional view of the hair curler of the first embodiment of the utility model, wherein the clip is in a closed state and the corresponding torsion spring is not compressed.

[0034] Figure 6 It is a cross-sectional view of the hair curler of the first embodiment of the utility model, wherein the clip is in an open state and the corresponding torsion spring is compressed.

[0035] Figure 7 It is a schematic diagram of the torsion spring of the hair curler of the first embodiment of the utility model, which is a bent structure.

[0036] Figure 8 This is a diagram showing the amplitude variation of the torsion spring of the hair curler of the first embodiment of the utility model in the clip closed state and the open state, and the variation angle is θ1.

[0037] Fig. 9 This is a diagram of the variation of the torsion spring of the curler of the first embodiment of the utility model in the clamp closed state and the open state. The variation clamp distance is L1. Compared with the variation distance L of the torsion spring of the traditional straight structure, L1>L.

[0038] Fig.10 It is a cross-sectional view of the hair curler of the second embodiment of the utility model, wherein the clip is in a closed state and the corresponding torsion spring is not compressed.

[0039] Fig.11 It is a cross-sectional view of a hair curler according to a second embodiment of the utility model, wherein the clip is in an open state and the corresponding torsion spring is compressed.

[0040] Fig.12 This is a diagram showing the amplitude variation of the torsion spring of the hair curler of the second embodiment of the utility model when the clip is in the closed state and the open state.

[0041] Fig.13 It is a cross-sectional view of the hair curler of the third embodiment of the utility model, wherein the clip is in a closed state and the corresponding torsion spring is not compressed.

[0042] Fig.14 It is a cross-sectional view of a hair curler according to a third embodiment of the utility model, wherein the clip is in an open state and the corresponding torsion spring is compressed.

[0043] Fig.15 This is a diagram showing the variation of the torsion spring of the hair curler of the third embodiment of the utility model when the clip is in the closed state and the open state.

[0044] Fig.16 This is a diagram showing the variation of the torsion spring of the hair curler of the fourth embodiment of the utility model when the clip is in the closed state and the open state.

[0045] Description of the accompanying drawings:

[0046] 1. Straight structure 10. Heating rod

[0047] 20. Clips 21. Hair clips

[0048] 22. Pressing portion 221. Articulated block

[0049] 30. Connecting seat 31. Sinking groove

[0050] 32. Support ear 40. Torsion spring structure

[0051] 41. Fixed part 42. Power storage part

[0052] 43. Elastic deformation portion 431. Straight portion

[0053] 432, bending part 401, compression space

[0054] 44. U-shaped connection 45. Ball bearing

[0055] 50. Connecting shaft. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0058] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0059] In addition, 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 the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0061] Embodiment 1

[0062] Please refer to Figures 5 to 9 As shown, it shows the specific structure of the first preferred embodiment of the utility model, which is a hair curler, including a gripping handle (not shown), a heating rod 10, and a clamp 20. The heating rod 10 is connected to one end of the gripping handle, and is used to heat and shape the hair wound thereon. The clamp 20 can be opened and closed to clamp the hair wound on the heating rod 10, thereby preventing the hair from slipping off / loosening from the heating rod 10 during the shaping process.

[0063] The clip 20 is rotatably mounted on the gripping handle, or the heating rod 10, or on the connecting seat 30 between the gripping handle and the heating rod 10. In this embodiment, the clip 20 is assembled on the connecting seat 30, the connecting seat 30 is fixed, and the clip 20 is rotatably mounted on the connecting seat 30. The opening and closing action of the clip 20 is realized through the hinge structure of the clip 20 and the seesaw principle.

[0064] The clip 20 is installed in a sunken manner to avoid the torsion spring and the like being directly exposed on the outside, which would make the appearance unsightly. The sunken structure is realized by providing a sunken groove 31 on the gripping handle, or the heating rod 10, or on the connecting seat 30 between the gripping handle and the heating rod 10. In this embodiment, the sunken groove 31 is provided on the connecting seat 30 to accommodate the torsion spring structure 40, and the fixing portion 41 of the torsion spring structure 40 is installed in the sunken groove 31. The torsion spring structure realizes the automatic reset of the clip 20 after opening, and provides a clamping force for clamping the hair. Figure 5It is a schematic diagram of the torsion spring structure 40 of the clip 20 in a closed state. The torsion spring structure is away from the connecting shaft 50 and is in a natural non-compressed state. Figure 6 It is a schematic diagram of the torsion spring structure 40 when the clip 20 is in the open state. The torsion spring structure contacts the connecting shaft 50 and is stopped on the connecting shaft 50. At this time, the torsion spring structure is in a squeezed elastic deformation state.

[0065] like Figure 5 and Figure 6 As shown, the clip 20 includes a hair clip 21 and a pressing portion 22. The shape of the hair clip 21 matches the heating rod 10 and can be attached to the surface of the heating rod 10. The pressing portion 22 forms an angle with the hair clip 21 and is connected to one end of the hair clip 21 in a tilted form. The pressing portion 22 can be made of a heat-insulating material and is relatively thick. The thick pressing portion 22 is convenient for the user to apply force on the one hand, and the heat-insulating material can prevent the heat transfer of the hair clip 21 from causing burns on the other hand. The pressing portion 22 can be combined with the hair clip 21 by assembly or integral inlay molding.

[0066] In this embodiment, the clip 20 is hinged to the connection seat 30 of the heating rod 10 through its pressing portion 22 and the connection shaft 50. Support ears 32 are provided at both ends of the connection seat 30, and a hinge block 221 is provided on the bottom surface of the pressing portion 22. The connection shaft 50 passes through the hinge block 221 in the middle, and both ends can be rotatably hung on the support ears 32. In this embodiment, the connection shaft 50 is above the surface of the heating rod 10, and the fixing portion 41 of the torsion spring structure is sunken and installed in the sunken groove 31 so as to be located below the surface of the heating rod 10.

[0067] like Figures 5 to 8 As shown, this embodiment provides a special torsion spring structure 40. By bending the torsion spring structure 40 and designing a specific shape of the connecting shaft 50 to avoid the position, it can be assembled in the same position to increase the clamping force of the clip 20 on the hair and increase the opening angle of the clip 20.

[0068] The torsion spring structure 40 is a double torsion spring, which has stronger elasticity than a single spring structure. The torsion spring structure 40 includes a fixed portion 41, a force storage portion 42, and an elastic deformation portion 43. The force storage portion 42 is a spiral structure connected between the fixed portion 41 and the elastic deformation portion 43. The top of the elastic deformation portion 43 is connected through a U-shaped connecting portion 44. A ball 45 is also arranged on the U-shaped connecting portion 44 to reduce friction with the pressing portion 22.

[0069] The elastic deformation part 43 is not a straight structure 1, but a curved structure. Specifically, the elastic deformation part 43 includes a straight part 431 and a bent part 432, and the bent part 432 can be arranged at any position of the straight part 431. Preferably, the bent part 432 avoids the position of the connecting axis 50, specifically, the M point avoids the connecting axis 50.

[0070] More specifically, the elastic deformation portion 43 includes an A1 straight segment, an A2 bent segment, and an A3 straight segment connected in sequence. The A2 bent segment is bent in a direction away from the compression space 401, and the A2 outer bent segment changes the shape of the straight portion 431, so that the elastic deformation portion 43 is bent to a side away from the connecting shaft 50.

[0071] like Figure 8 As shown, when the clip 20 is closed, the elastic deformation part 43 is in the solid line position. When the clip 20 is in the open state, the elastic deformation part 43 is in the dotted line position. Compared with the position of the connecting shaft 50, the A2 bending section is below the M point. Compared with the traditional straight torsion spring, the M point is shifted due to bending to form a new M1 point. The distance between the M1 point and the connecting shaft 50 is S1, S1>S, so the new M1 point has a longer distance from the connecting shaft 50, delaying the contact time between the torsion spring and the connecting shaft 50 to allow a larger deformation amplitude.

[0072] The bending section A2 is bent in a direction away from the connecting shaft 50 to increase the compression stroke of the torsion spring, thereby increasing the clamping force of the clip 20 on the hair. Figure 4 As shown, the maximum compression stroke of the conventional straight spring is fixed L at the connection point between the torsion spring and the clip 20 due to the resistance of sinking, as shown in FIG. Figure 8 As shown, when the spring is bent in a direction away from the connecting shaft 50, the spring in a natural state can move away from the end away from the connecting shaft 50, thereby increasing the compression stroke L1 of the spring, thereby ultimately increasing the clamping force of the clip 20 on the hair.

[0073] like Fig. 9 As shown, when the torsion spring is in a normal non-compressed state, it also has a larger reset stroke than the traditional straight spring, L is the reset stroke of the straight spring, L1 is the stroke of the improved curved spring in this embodiment, and it is obvious that L1>L. Therefore, in the same assembly space, by changing the bending change of the torsion spring, the clamping force of the clip 20 on the hair can be increased, and the opening angle of the clip 20 can be increased. The opening angle of this embodiment is β1, which is greater than the opening angle β provided by the traditional straight structure, that is, β1>β.

[0074] Embodiment 2

[0075] Please refer to Figures 10 to 12As shown, it shows the specific structure of the second preferred embodiment of the utility model, which is a hair curler, and its accessories are basically the same as those of the first embodiment, except that another torsion spring structure is adopted.

[0076] The elastic deformation part 43 is not a straight structure 1, but a curved structure. Specifically, the elastic deformation part 43 includes a straight part 431 and a bent part 432, and the bent part 432 can be arranged at any position of the straight part 431. Preferably, the bent part 432 avoids the position of the connecting shaft 50, that is, is arranged at the original point M, so that the point M is at the avoidance position.

[0077] More specifically, the elastic deformation part 43 includes a B1 straight section, a B2 bent section, and a B3 straight section connected in sequence. The B2 bent section bends toward the compression space 401, and the B2 bent section changes the shape of the straight section 431, so that the elastic deformation part 43 avoids the space to increase the distance between the M point and the connecting axis 50.

[0078] like Fig.10 and Fig.11 As shown, when the clamp 20 is in the closed and open states, the bending position of the B2 bending section is at point M. Point M shifts due to bending to form a new point M2. The distance between point M2 and the connecting axis 50 is S2, S2>S, so that there is a greater distance from the connecting axis 50.

[0079] Compared with the position of the connecting shaft 50, the B2 bending section is arched at the M point to avoid. Compared with the traditional straight torsion spring, the M2 point is farther away from the connecting shaft 50, which delays the contact time between the M2 point and the connecting shaft 50 to allow a larger deformation range.

[0080] If it is Figure 4 The straight spring shown can only be pressed down to the point where the connecting shaft 50 prevents the straight torsion spring from moving. Figure 2 The position shown in the figure is designed to avoid the connection shaft 50, and the position can be pressed down to Figure 6 The present embodiment increases the rotation angle, thereby ultimately increasing the opening angle of the clip 20. The opening angle of the present embodiment is β2, which is greater than the opening angle β provided by the conventional straight structure, that is, β2>β.

[0081] Embodiment 3

[0082] Please refer to Figures 13 to 15 As shown, it shows the specific structure of the third preferred embodiment of the utility model, which is a hair curler, and its accessories are basically the same as those of the first embodiment, except that a third torsion spring structure 40 is adopted.

[0083] The elastic deformation part 43 is not a straight structure 1, but a curved structure. Specifically, the elastic deformation part 43 includes a straight part 431 and a bent part 432, and the bent part 432 can be arranged at any position of the straight part 431. Preferably, the bent part 432 avoids the position of the connecting shaft 50 twice, realizing double avoidance.

[0084] Specifically, the elastic deformation portion 43 includes a C1 straight section, a C2 bent section, a C3 bent section, and a C4 straight section connected in sequence. The C2 bent section bends in a direction away from the compression space 401, and the C2 bent section bends in a direction toward the compression space 401. The C2 bent section and the C3 bent section change the shape of the straight section 431, so that the elastic deformation portion 43 avoids space to increase the distance between the M point and the connecting shaft 50. In addition, since the C2 bent section is located outside the M point, and the C3 bent section is located at the position where the M point is located, a double avoidance effect is achieved.

[0085] Fig.13 The clip 20 is in a closed state. Fig.14 The clamp 20 is in an open state. The bending position of the C2 bending section is below the M point, and the bending position of the C3 bending section is on the M point. The M point is shifted due to the bending to form a new M3 point. The distance between the M3 point and the connecting axis 50 is S3, S3>S, so the M point has a greater distance from the connecting axis 50 due to the bending changes of the C2 bending section and the C3 bending section.

[0086] In this embodiment, the C2 bending section is bent toward one end away from the connecting shaft 50, and the connecting shaft 50 is avoided by the C3 bending section, thereby increasing the rotation angle and finally increasing the opening angle of the clip 20. The opening angle of this embodiment is β3, which is greater than the opening angle β provided by the traditional straight structure, that is, β3>β.

[0087] Embodiment 4

[0088] Please refer to Fig.16As shown, it shows the specific structure of the fourth preferred embodiment of the utility model, which is a hair curler, and its accessories are basically the same as those of the third embodiment, except that the fourth torsion spring structure 40 is adopted, that is, a new bending section is further added, so that the elastic deformation part 43 is changed. The new elastic deformation part 43 includes a D1 straight section, a D2 bending section, a D3 bending section, a D4 bending section, and a D5 straight section connected in sequence. The D2 bending section and the D4 bending section are bent in the direction away from the compression space 401, and the D3 bending section is bent in the direction of the compression space 401. In addition, the bending position of the D2 bending section is below the M point, the bending position of the D3 bending section is above the M point, and the M point is shifted due to the bending to form a new M4 point. The distance between the M4 point and the connecting shaft 50 is S4, S4>S, which plays the effect of avoiding the connecting shaft 50 and increasing the rotation angle.

[0089] Based on the above four embodiments, further, the bending or avoidance design is a smooth design such as an arc, and the service life of the arc bending will be longer. Specifically, the A2 bending section in Example 1, the B2 bending section in Example 2, the C2 bending section and the C3 bending section in Example 3, the D2 bending section, the D3 bending section and the D4 bending section in Example 4 are all arc-shaped. Both the arc bending and the sharp-angle bending can achieve the effect of Example 1. Compared with sharp bends such as obtuse angles and acute angles, the arc bending is gradual. Circular arc bending may cause less stress concentration on the material because the arc has a larger bending radius and can better disperse the stress. A smaller bending radius may cause greater stress concentration on the material. The same material, in the same environment. The service life of the arc bending may be longer than that of the sharp-angle bending.

[0090] In summary, the design focus of the utility model is to increase the clamping force of the clip 20 on the hair and increase the opening angle of the clip 20 by changing the existing spring structure, bending the spring, and making an avoidance design for the connecting shaft 50, so as to realize a curling iron spring structure with a simple structure and the required force for opening the clip 20 in a small space.

[0091] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A torsion spring structure, comprising a fixing portion (41), a force storage portion (42), and an elastic deformation portion (43) connected in sequence, characterized in that: The elastic deformation portion (43) is a curved structure, having a straight portion (431) and a bent portion (432), and the bent portion (432) is arranged at any position of the straight portion (431).

2. A torsion spring structure according to claim 1, characterized in that: The elastic deformation portion (43) is any one of the following structures: Structure 1, the elastic deformation portion (43) comprises an A1 straight section, an A2 bent section, and an A3 straight section which are sequentially extended and connected by the force storage portion (42), and the A2 bent section is bent in a direction away from the compression space (401); Structure 2, the elastic deformation portion (43) comprises a B1 straight section, a B2 bent section, and a B3 straight section which are sequentially extended and connected by the force storage portion (42), and the B2 bent section is bent toward the direction of the compression space (401); Structure three, the elastic deformation portion (43) comprises a C1 straight section, a C2 bent section, a C3 bent section, and a C4 straight section which are sequentially extended and connected by the force storage portion (42), the C2 bent section is bent in a direction away from the compression space (401), and the C2 bent section is bent in a direction toward the compression space (401); Structure 4, the elastic deformation portion (43) comprises a D1 straight section, a D2 bent section, a D3 bent section, a D4 bent section, and a D5 straight section which are sequentially extended and connected by the force storage portion (42), the D2 bent section and the D4 bent section are both bent in a direction away from the compression space (401), and the D3 bent section is bent in the direction of the compression space (401).

3. A torsion spring structure according to claim 1, characterized in that: The bent portion (432) is an arc bend.

4. A torsion spring structure according to claim 1, characterized in that: The force storage portion (42) is a spiral structure connected between the fixing portion (41) and the elastic deformation portion (43).

5. A torsion spring structure according to claim 1, characterized in that: The torsion spring structure (40) is a double torsion spring, the top ends of the elastic deformation parts (43) are connected via a U-shaped connecting part (44), and a ball (45) is strung on the U-shaped connecting part (44).

6. A hairdressing device, comprising a gripping handle, a heating rod (10), and a clip (20), wherein the heating rod (10) is connected to one end of the gripping handle, and the clip (20) is rotatably mounted on the gripping handle, or the heating rod (10), or on a connecting seat (30) between the gripping handle and the heating rod (10), characterized in that: The clip (20) abuts against the torsion spring structure (40) according to any one of claims 1 to 5.

7. A hairdressing device according to claim 6, characterized in that: The connecting seat (30) is provided with a sinking groove (31), and the fixing portion (41) of the torsion spring structure (40) is installed in the sinking groove (31).

8. A hairdressing device according to claim 6, characterized in that: The clip (20) is hinged to the connecting seat (30) via a connecting shaft (50), and the bent portion (432) of the torsion spring structure (40) is arranged to avoid the connecting shaft (50).

9. A hairdressing device according to claim 6, characterized in that: When the elastic deformation part (43) is a straight structure (1), it has a point M that can contact the connecting axis (50) in a compressed state, and a distance S between the point M and the connecting axis (50) in a non-compressed state; based on the elastic deformation part (43) being any one of the following structures: Structure 1, the elastic deformation portion (43) comprises an A1 straight section, an A2 bent section, and an A3 straight section which are sequentially extended and connected by the force storage portion (42), and the A2 bent section is bent in a direction away from the compression space (401); Structure 2, the elastic deformation portion (43) comprises a B1 straight section, a B2 bent section, and a B3 straight section which are sequentially extended and connected by the force storage portion (42), and the B2 bent section is bent toward the direction of the compression space (401); Structure three, the elastic deformation portion (43) comprises a C1 straight section, a C2 bent section, a C3 bent section, and a C4 straight section which are sequentially extended and connected by the force storage portion (42), the C2 bent section is bent in a direction away from the compression space (401), and the C2 bent section is bent in a direction toward the compression space (401); Structure 4, the elastic deformation portion (43) comprises a D1 straight section, a D2 bent section, a D3 bent section, a D4 bent section, and a D5 straight section which are sequentially extended and connected by the force storage portion (42), the D2 bent section and the D4 bent section are both bent in a direction away from the compression space (401), and the D3 bent section is bent in a direction toward the compression space (401); When the elastic deformation portion (43) is in structure 1, the bending position of the A2 bending section is below point M, point M is displaced due to the bending to form a new point M1, and the distance between point M1 and the connecting axis (50) is S1, where S1>S; When the elastic deformation portion (43) is in structure 2, the bending position of the B2 bending section is at point M, point M is displaced due to the bending to form a new point M2, and the distance between point M2 and the connecting axis (50) is S2, S2>S; When the elastic deformation portion (43) is structure three, the bending position of the C2 bending section is below the M point, and the bending position of the C3 bending section is on the M point. The M point is displaced due to the bending to form a new M3 point. The distance between the M3 point and the connecting axis (50) is S3, and S3>S. When the elastic deformation part (43) is structure four, the bending position of the D2 bending section is below point M, the bending position of the D3 bending section is above point M, and the bending position of the D4 bending section is above point M. Point M shifts due to bending to form a new point M4. The distance between point M4 and the connecting axis (50) is S4, and S4>S.

10. A hairdressing device according to claim 6, characterized in that: The connecting shaft (50) of the clip (20) is above the surface of the heating rod (10), and the fixed end of the torsion spring is sunken and installed in the lower groove so as to be located below the surface of the heating rod (10).

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