Flexible hair styling tool and heating device thereof

Abstract

The present invention relates to a flexible hair styling tool and its heating device. The heating device comprises at least one elastically deformable heat-conducting plate providing an external heating surface. The bottom surface of the heat-conducting plate is provided with at least two sets of supporting members for the heat-conducting plate. At least one of the supporting members is elastically floatable via an elastic member. The at least one elastically floatable support member is a heating element, which is in thermally conductive contact with the heat-conducting plate. A flexible hair styling tool employing this heating device achieves a flexible heating and clamping effect on the hair, reducing the hard friction caused by rigid contact, thereby reducing damage to the hair cuticle.

Description

Technical Field

[0001] The present invention relates to the technical field of hair styling tools, in particular to a flexible hair styling tool and a heating device thereof. Background Art

[0002] Currently, hair straighteners are widely used in the hairdressing industry for straightening hair. Since the heating plates of existing hair straighteners are typically made of rigid materials such as rigid metal, ceramic, or a combination of the two, they form a rigid structure. Sometimes, a spring or silicone rubber is provided in the housing to support the bottom of the heating plate assembly, so that the heating plate as a whole moves up and down or swings when the heating plate assembly is under pressure. However, since the heating plate as a whole is a rigid structure, the clamping pressure of the hair straightener cannot be too high when pulling the hair, so as to avoid the hair being clamped and unable to slide due to the high clamping pressure, causing a pulling pain to the user. Furthermore, the rigid heating plate will disperse the hair when clamping and pulling the hair, failing to wrap it well. This results in the heat from the heating plate not being transferred evenly and quickly to the hair, resulting in reduced hair pulling efficiency and poor results.

[0003] Therefore, the Chinese invention patent application with publication number CN114732201A discloses a hair straightener with a heating plate that can be elastically bent and deformed, comprising a housing, a power cord assembly, a heating plate assembly, a control switch, and a circuit board. The heating plate assembly includes a heating plate and a heater, the heater being placed flat on a plurality of support blocks, the support blocks being mounted on a fixed frame via legs at both ends; an elastic rubber seat being mounted in the fixed frame, the support blocks being mounted above the elastic rubber seat; and a plurality of U-shaped brackets being laid on the heater, the heating plate being laid flat on the U-shaped brackets. This prior art design utilizes a support structure primarily composed of U-shaped brackets, support blocks, and elastic rubber seats, the heating plate and heater being mounted and fixed by the support structure. When hair is pulled, the heating plate can be locally elastically bent and deformed along the pulling direction, thereby preventing the hair from being clamped and pulled unsmoothly or causing pain due to excessive clamping pressure. At the same time, the heating plate can better wrap the hair, allowing heat energy to be more evenly and effectively transferred directly to the hair, thereby improving the pulling effect and experience. Although the prior art achieves a better flexible hair straightening effect by providing multiple sections of elastic support, it still has the following shortcomings: although the elastic support is achieved by multiple sections of support blocks, it seems that the segmented force can be achieved to increase the flexible clamping effect of the hair, but the heating plate, U-shaped bracket and heater are all integral structures. Even if the thickness is reduced, the overall flexibility after stacking is still insufficient. In particular, in order to obtain a large amount of heat, the volume and thickness of the heater must be large enough, otherwise the heating efficiency will be very slow.

[0004] Therefore, the key to achieving a better flexible clamping effect on the hair lies in how to solve the problem of insufficient overall flexibility of the combination of the heating plate, U-shaped bracket, and heater in the prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a flexible hair styling tool and a heating device thereof, which solves the problem of insufficient overall flexibility of the combination of the heating plate, U-shaped bracket and heater in the prior art.

[0006] In the first aspect, an embodiment of the present invention provides a heating device, which includes at least one heat-conducting plate providing an external heating surface, the heat-conducting plate is elastically deformable, and the bottom surface of the heat-conducting plate is provided with at least two groups of support members supporting the heat-conducting plate, at least one support member is elastically floated by an elastic member, and at least one elastically floatable support member is a heating component, and the heating component is in heat conduction contact with the heat-conducting plate. The beneficial effect of this technical solution is as follows: by dividing the support members of the existing integrated structure of the heat-conducting plate into at least two groups of support members, and at least one of the support members is an elastically floatable heating component, and is combined with a heat-conducting plate as an external heating surface, after the heat-conducting plate is compressed, according to the position of the force, at least one group of support members is squeezed and moves downward, and due to the integrity of the heat-conducting plate, a certain local suspension gap is generated between the support member and the heat-conducting plate after the support member moves downward, and thanks to the suspension gap, the flexible heat-conducting plate can make a larger deformation.

[0007] In some embodiments, the support members are all heating components. The beneficial effect of this technical solution is that by setting all the support members as heating components, the heat conducting sheet can be fully heated by the heating components, ensuring rapid heat transfer and heating efficiency, and the corresponding temperature can be quickly reached at any position on the external heating surface.

[0008] In some embodiments, at least one support member is a non-heating component and is located at the end side of the heating component. The beneficial effect of this technical solution is that the support member for the non-heating component and the support member for the heating component jointly form a support for the thermal conductive sheet, and the heat of the heating component is transferred to the portion of the thermal conductive sheet supported by the support member for the non-heating component, which concentrates the external heating surface on the portion of the thermal conductive sheet supported by the support member for the heating component. This can be used in conjunction with different application scenarios and has more flexible applications.

[0009] In some embodiments, the heating assembly includes a heating element and a heat conductor, with the heat conductor being disposed between the heating element and the heat conducting sheet so that heat from the heating element is transferred to the heat conducting sheet via the heat conductor. This technical solution has the beneficial effect of transferring heat from the heating element to the heat conducting sheet via the heat conductor, thereby enabling heat to be transferred more evenly to the heat conducting sheet.

[0010] In some embodiments, the heat conducting sheet is a metal sheet. The beneficial effect of this technical solution is that the heat conducting sheet is formed by utilizing the elastic deformation characteristics of metal.

[0011] In some embodiments, the thickness of the thermally conductive sheet is 0.1-1 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm. The advantageous effect of this technical solution is that by limiting the thickness of the thermally conductive sheet, the degree of elastic deformation of the thermally conductive sheet can be controlled.

[0012] In some embodiments, the surface of the heat conducting sheet is covered with a covering cloth. The beneficial effect of this technical solution is that the covering cloth improves the flexible contact effect and the water-locking effect of the surface. The thickness of the covering cloth is 0.25-0.65 mm, for example, one of the following thicknesses: 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, in mm.

[0013] In some embodiments, the covering fabric includes a fabric layer disposed on the outer surface of the heat conducting plate and a covering layer disposed outside the fabric layer. The beneficial effect of this technical solution is that the fabric layer is covered with a covering layer to form a covering fabric that improves the surface's flexible contact and water-locking properties.

[0014] In some embodiments, the coating is a silicone layer or a PTFE layer. The silicone layer is formed by solidifying a silicone solution; the PTFE layer is formed by solidifying a PTFE solution. This technical solution has the beneficial effect of using the silicone layer or PTFE layer as a coating to cover the outer surface of the fabric layer, thereby providing the fabric layer with improved flexible contact and water-retention properties.

[0015] In some embodiments, the elastic member is a spring, a flexible support, or a combination of the two. The beneficial effect of this technical solution is that by arranging one or two elastic members at different positions, the floating effect of the heating component can be controlled and the problem of uneven floating effect can be solved.

[0016] In some embodiments, the elastic member has an arc support surface to achieve multi-directional elastic floating. The beneficial effect of this technical solution is that by providing the arc support surface, the heating component can have more lateral floating effects to accommodate more multi-directional heating situations.

[0017] In some embodiments, the thermally conductive sheet is assembled to the support member via an assembly portion. This technical solution has the beneficial effect of assembling the thermally conductive sheet to the support member via the assembly portion, thereby assembling the support member and the thermally conductive sheet in a coordinated manner and preventing deformation of the thermally conductive sheet under pressure. The assembly portion may be assembled by welding, bending, screws, riveting, part fixing, snaps, springs, or other methods.

[0018] In some embodiments, the assembly portion is located at both ends of the heat conducting sheet. The beneficial effect of this technical solution is that the assembly portion is arranged at the end to ensure the elastic deformation capability of the portion between the two end portions.

[0019] Some embodiments further include a limiting bracket, on which the support member is movably limited by a limiting portion. This technical solution has the beneficial effect of limiting the floating range of the support member by the limiting bracket, thereby ensuring that the surface of the support member remains as flush as possible and in full contact with the thermal conductive sheet, and also ensuring that the external heating surface of the thermal conductive sheet remains in the same plane when not under pressure.

[0020] In a second aspect, embodiments of the present invention provide a flexible hair styling tool comprising a handle and a first and second housing that can be opened and closed. The first housing is provided with a first mounting slot having a first opening. At least one heating device according to the first aspect is mounted within the first mounting slot, with the external heating surface of the heating device exposed through the first opening, serving as a first flexible heating clamping surface for the hair. This technical solution advantageously achieves a flexible styling effect by incorporating the heating device into the hair styling tool, effectively resolving the issue of insufficient overall flexibility of the combined heating plate, U-shaped bracket, and heater in the prior art.

[0021] In some embodiments, the second housing is provided with a second mounting slot having a second opening. At least one heating device is mounted within the second mounting slot, with the external heating surface of the heating device exposed through the second opening, serving as a second flexible heating clamping surface for the hair. This technical solution advantageously provides enhanced flexible contact with the hair through the double-sided flexible heating clamping surface.

[0022] The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 Schematic diagram of the heating device of Example 1 of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the heating device of Example 1 of the present invention.

[0026] Figure 3 Schematic diagram of the pressure of the heating device of Example 1 of the present invention.

[0027] Figure 4 Schematic diagram of the pressure of the heating device of Example 2 of the present invention.

[0028] Figure 5 This is a schematic diagram of the heating device of Example 3 of the present invention. Figure 1 .

[0029] Figure 6 This is a schematic diagram of the heating device of Example 3 of the present invention. Figure 2 .

[0030] Figure 7 Schematic diagram of a heating device according to embodiment 4 of the present invention.

[0031] Figure 8 This is a schematic diagram of the heating device of Example 5 of the present invention. Figure 1 .

[0032] Figure 9 This is a schematic diagram of the heating device of Example 5 of the present invention. Figure 2 .

[0033] Figure 10 Schematic diagram of the heating device of Example 6 of the present invention Figure 1 .

[0034] Figure 11 Schematic diagram of the heating device of Example 6 of the present invention Figure 2 .

[0035] Figure 12 Schematic diagram of the heating device of Example 7 of the present invention Figure 1 .

[0036] Figure 13 Schematic diagram of the heating device of Example 7 of the present invention Figure 2 .

[0037] Figure 14 Schematic diagram of the heating device of Example 8 of the present invention Figure 1 .

[0038] Figure 15 Schematic diagram of the heating device of Example 8 of the present invention Figure 2 .

[0039] Figure 16 Schematic diagram of the heating device of Example 9 of the present invention.

[0040] Figure 17 Schematic diagram of a heating device according to embodiment 10 of the present invention.

[0041] Figure 18 It is a schematic diagram of the heating device of Example 11 of the present invention.

[0042] Figure 19 It is a schematic diagram of the heating device of Example 12 of the present invention.

[0043] Figure 20 It is a schematic diagram of the heating device of Example 13 of the present invention.

[0044] Figure 21 It is a partial schematic diagram of the heating device of embodiment 14 of the present invention.

[0045] Figure 22 This is a partial schematic diagram of the heating device of Example 15 of the present invention. Figure 1 .

[0046] Figure 23 This is a partial schematic diagram of the heating device of Example 15 of the present invention. Figure 2 .

[0047] Figure 24 It is a partial schematic diagram of the heating device of Example 16 of the present invention.

[0048] Figure 25 It is a schematic diagram of the heating device of Example 17 of the present invention.

[0049] Figure 26 Schematic diagram of the heat conducting plate of Example 18 of the present invention.

[0050] Figure 27 Schematic diagram of a flexible hair styling tool according to embodiment 19 of the present invention.

[0051] Figure 28 Schematic diagram of a flexible hair styling tool according to embodiment 20 of the present invention.

[0052] Figure 29 Schematic diagram of a flexible hair styling tool according to embodiment 21 of the present invention.

[0053] Figure 30 Schematic diagram of a flexible hair styling tool according to embodiment 22 of the present invention.

[0054] Figure 31 This is an electron microscope image of a traditional hair straightener after rubbing against hair.

[0055] Figure 32 This is an electron microscope image of the flexible hair styling tool of the present invention after being rubbed against hair.

[0056] In the figure, 1. first heating component; 2. second heating component; 3. first heat conducting plate; 4. third heating component; 5. second heat conducting plate; 6. fourth heating component; 7. heating component; 8. elastic member; 9. elastic member (with arc supporting surface); 10. PTC heating element; 11. heat conducting element; 12. handle; 13. first shell; 14. second shell; 15. limiting member; 16. first supporting member; 17. second supporting member; 18. limiting bracket; 19. lower hook; 20. lower hook; 21. assembly portion; 22. opening. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described and illustrated in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the contents disclosed by the present invention, some changes such as design, manufacturing or production based on the technical contents disclosed by the present invention are only conventional technical means and should not be understood as the contents disclosed by the present invention being insufficient.

[0058] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments, unless there is a conflict.

[0059] Unless otherwise defined, technical or scientific terms used in the present invention shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the invention pertains. The terms "a," "an," "a kind," "the," and similar expressions used in the present invention do not limit the number and may refer to the singular or plural. The terms "comprise," "include," "have," and any variations thereof used in the present invention are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or device comprising a series of steps or modules (units) is not limited to the listed steps or units but may also include steps or units not listed, or may include other steps or units inherent to the process, method, product, or device. The terms "connect," "connected," "coupled," and similar expressions used in the present invention are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. The term "plurality" used in the present invention means greater than or equal to two. "And / or" describes an association relationship between associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist simultaneously, or B exists alone. The terms "first", "second", "third", etc. involved in the present invention are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0060] Example 1, as Figure 1-3 The heating device shown has a first heating component 1 and a second heating component 2 arranged side by side in front and back, and the surfaces of the first heating component 1 and the second heating component 2 are covered with a first thermal conductive sheet 3. When the first thermal conductive sheet 3 above the first heating component 1 is pressurized, the pressurized first thermal conductive sheet 3 and the first heating component 1 move downward. Due to the overall structure of the first thermal conductive sheet 3, the second heating component 2 will follow the downward movement. However, the downward movement of the second heating component 2 is smaller than that of the first heating component 1, so that the surface of the first heating component 1 is lower than the surface of the second heating component 2. Therefore, a local suspension gap is formed between the first heating component 1 and the first thermal conductive sheet 3, especially the suspension gap near the second heating component 2 is larger. Thanks to this suspension gap, the flexible thermal conductive sheet has better deformation space. In addition, the second heating component can be replaced with a support member of a floating non-heating component.

[0061] In the embodiment 1, the second heating component 2 is movable. In the embodiment 2, as shown in FIG. Figure 4As shown, the second heating component 2 can be set to be fixed. Although setting the second heating component 2 to be fixed makes the first heat conducting plate 3 corresponding to the second heating component 2 lose the effect of flexible contact, the second heating component 2 can serve as a heat supplement for the first pair of heat conducting plates. That is to say, the first heat conducting plate 3 corresponding to the first heating component 1 is a flexible contact position. Due to the generation of the suspension gap (the suspension gap is larger after the second heating component 2 is fixed), the contact area between the first heat conducting plate 3 and the first heating component 1 is reduced. The first heat conducting plate 3 corresponding to the suspension gap loses direct contact with the first heating component 1 and loses direct heat conduction. Therefore, the fixed second heating component 2 can also supplement heat and make up for the defects caused by the suspension gap. In addition, the second heat component 2 can be replaced with a support member of a fixed non-heating component.

[0062] In embodiment 3, the extension lengths of the first heating element 1 and the second heating element 2 arranged side by side are adjusted, such as Figure 5 The heating device shown in the figure can be adjusted so that the first heating component 1 is longer than the second heating component 2, or as shown in the figure Figure 6 As shown, the first heating component 1 is adjusted to be shorter than the second heating component 2. Thus, the position where the suspension gap appears is adjusted to achieve a more flexible contact effect.

[0063] Example 4, as Figure 7 The heating device shown has a first heating component 1 and a second heating component 2 arranged side by side on the left and right. The first heating component 1 and the second heating component 2 are commonly covered with a first heat conducting sheet 3 .

[0064] Example 5, as Figure 8 、 9 The heating device shown has a first heating component 1, a second heating component 2 and a third heating component 4 arranged side by side, wherein the first heating component 1 and the second heating component 2 are arranged front to back, and the third heating component 4 is located on the left or right side of the first heating component 1 and the second heating component 2, and the length of the third heating component 4 spans the first heating component 1 and the second heating component 2. There are two options for the arrangement of the thermal conductive sheet. The first is that the first heating component 1 and the second heating component 2 are jointly covered with the first thermal conductive sheet 3, and the third heating component 4 is covered with the second thermal conductive sheet 5. The second is that the first heating component 1, the second heating component 2 and the third heating component 4 are jointly covered with the first thermal conductive sheet 3. It is also necessary to balance the clamping force on the basis of measuring the flexible contact. Therefore, the clamping force is improved by arranging the third heating component 4.

[0065] Example 6, as Figure 10 、 11The heating device shown has a first heating component 1, a second heating component 2, and a third heating component 4 arranged side by side, wherein the first heating component 1 and the second heating component 2 are arranged on the left and right, and the third heating component 4 is located in front of or behind the first heating component 1 and the second heating component 2, and the third heating component 4 has sufficient width to span the first heating component 1 and the second heating component 2. There are two schemes for the arrangement of the thermal conductive sheet. The first scheme is that the first heating component 1 and the second heating component 2 are jointly covered with the first thermal conductive sheet 3, and the third heating component 4 is covered with the second thermal conductive sheet 5. The second scheme is that the first heating component 1, the second heating component 2, and the third heating component 4 are jointly covered with the first thermal conductive sheet 3.

[0066] Example 7, as Figure 12 、 13 The heating device shown has a first heating component 1, a second heating component 2, a third heating component 4 and a fourth heating component 6 arranged side by side, wherein the first heating component 1 and the second heating component 2 are arranged front to back, and the third heating component 4 and the fourth heating component 6 are located on the left or right side of the first heating component 1 and the second heating component 2 and arranged front to back, forming a structure with better flexibility. There are two schemes for the arrangement of the thermal conductive sheet. The first scheme is that the first heating component 1 and the second heating component 2 are jointly covered with the first thermal conductive sheet 3, and the third heating component 4 is covered with the second thermal conductive sheet 5. The second scheme is that the first heating component 1, the second heating component 2, the third heating component 4 and the fourth heating component 6 are jointly covered with the first thermal conductive sheet 3.

[0067] Example 8, as Figure 14 、 15 The heating device shown has a first heating component 1, a second heating component 2, a third heating component 4 and a fourth heating component 6 arranged side by side, wherein the first heating component 1 and the second heating component 2 are arranged front to back and serve as the first component, and the third heating component 4 and the fourth heating component 6 are arranged front to back and serve as the second component, and the first component and the second component are arranged side by side front to back. There are two schemes for the arrangement of the thermal conductive sheet. The first scheme is that the first heating component 1 and the second heating component 2 are jointly covered with the first thermal conductive sheet 3, and the third heating component 4 and the fourth heating component 6 are jointly covered with the second thermal conductive sheet 5. The second scheme is that the first heating component 1, the second heating component 2, the third heating component 4 and the fourth heating component 6 are jointly covered with the first thermal conductive sheet 3.

[0068] Example 9, as Figure 16 The heating device shown has a first heating component 1, a second heating component 2 and a third heating component 4 arranged side by side in sequence front to back. The first heating component 1, the second heating component 2 and the third heating component 4 are commonly covered with a first heat conducting sheet 3.

[0069] Example 10, as Figure 17As shown, two heating devices are used to form the clamping surface. The upper heating device has a first heat conducting plate 3 and a first heating component 1 and a second heating component 2 arranged side by side in front and back. The lower heating device has a first heat conducting plate 3 and a first heating component 1 and a second heating component 2 arranged side by side in front and back. The lengths of the upper and lower first heating components 1 and the second heating components 2 are the same, and the upper and lower gaps are both located in the middle. Example 11, as shown Figure 18 As shown, based on Example 10, the first heating component 1 of the upper heating device is shorter and the second heating component 2 is longer, so the upper gap is formed on the left side, while the first heating component 1 of the lower heating device is longer and the second heating component 2 is shorter, so the lower gap is formed on the right side. Figure 19 As shown, the upper heating device adopts the first heat conducting plate 3 and the first heating component 1, the second heating component 2 and the third heating component 4 arranged side by side in sequence, and the lower heating device has the first heat conducting plate 3 and the first heating component 1 and the second heating component 2 arranged side by side in sequence. The lower gap of the lower heating device is located in the middle, while the two upper gaps of the upper heating device are located on the left and right sides. Through the above-mentioned pairing combination of the upper gap and the lower gap, the configuration of the clamping force at different positions is realized. Those skilled in the art can arbitrarily combine and realize the control design of the clamping force of different clamping surfaces according to this scheme, which are all extensions of this scheme and are within the protection scope of this scheme.

[0070] Example 13, as Figure 20 As shown, the upper heating device adopts the first heat conducting plate 3 and the first support member 16, the first heating component 1 and the second support member 17 arranged side by side in sequence front to back. The first support member 16 and the second support member 17 are non-heating components. The lower heating device has the first heating component 1 and the second heating component 2 arranged side by side front to back. For practical applications, the middle position is the most commonly used heating area. Therefore, the upper heating device only heats the first heating component 1 located in the middle. Under the control of the clamping force as described in Example 12, the heating area is concentrated in the middle. However, since the heat conducting plate will quickly conduct heat, the temperature difference between the two ends and the middle of the heating surface of the upper heating device will not be too large.

[0071] In addition to the above embodiments, the number and size of the heating components can be changed to evolve into more combinations, and the changes in the coverage of the heat conducting plate can further evolve into more combinations. Therefore, the structures evolved based on this concept are all extensions of this concept and should all be within the scope of protection of this concept, and will not be repeated here.

[0072] Example 14, as Figure 21The heating device shown in the figure has a heating component 7 supported by a single elastic member 8, which is arranged in the middle of the bottom surface of the heating component 7. Since there is only one elastic member 8 to provide elastic supporting force, a reliable structure is required for the assembly of the elastic member 8, such as a silicone support block, which is respectively assembled and fixed at its upper and lower ends, one of which is assembled into place with the middle of the bottom surface of the heating component 7, so that the heating component 7 can float in multiple directions with the silicone support block as the center, including front and back floating at both ends of the heating component, left and right floating on both sides, and so on.

[0073] Example 15, as Figure 22 In order to make the floating effect of the heating component 7 more reliable and stable, the heating device shown generally adopts two elastic members 8 to support the heating component 7 together. Generally, an elastic member 8 is provided under the bottom surface near both ends according to the length extension direction. Figure 23 As shown, in order to enhance the multi-directional floating effect, the bottom surface of the elastic member 9 is provided with an arc support surface, which helps the heating component 7 to achieve the floating effect on the left and right sides.

[0074] Example 16, as Figure 24 The heating device shown, based on Example 14, is configured so that the heating component can be configured horizontally or tilted according to the different horizontalities of the heating component caused by the elastic support forces of the front and rear elastic members 8 on the heating component, so as to respond to different clamping force requirements. For example, when the first heating component 1 and the second heating component 2 are tilted toward the center, a position is generated in the middle that partially arches the heat conducting plate, so that the clamping force at this position is further strengthened. Of course, the elastic member 8 with adjustable position can also be used to adjust the different clamping force requirements, thereby improving the scope of application.

[0075] In addition to the configuration position of the elastic member in the above embodiment, the elastic member can also be set on the left and right sides of the bottom surface of the heating component, or the side of the heating component can be connected by a tension spring to achieve floating, which is also achievable by those skilled in the art. The specific structure will not be repeated here.

[0076] Example 17, as Figure 25In the heating device shown, the first support member 16 is limited and assembled by a limit bracket 18. The first support member 16 has a limit portion. Specifically, the limit portion is a lower hook portion 19 formed by a heat conductor, and the limit bracket is a groove-shaped structure. The limit bracket has upper hook portions 20 on both sides. The lower hook portion 19 and the upper hook portion 20 are hooked with each other. The upper hook portion 20 has a space within the lower hook portion 19 for relative movement. Therefore, under the action of the elastic member, when the support member rises to the limit of movement, when the upper hook portion 20 remains horizontally hooked with the lower hook portion 19, the surfaces of the support members of the same thickness are also maintained at the same horizontal plane, and then the heat conducting sheet covering the support member can also be maintained at the same horizontal plane, so that the external heating surface of the heating device is maintained at a uniform horizontal plane. Of course, the hooking height of each support member can be differentiated as needed, so that the external heating surface of the heating device has a concave and convex surface to meet different heating requirements.

[0077] Example 18, as Figure 26 The first heat conducting sheet 3 shown is provided with an assembly portion 21 at both ends of the first heat conducting sheet 3. The assembly portion 21 is used to assemble and fix the first heat conducting sheet and the support member into a whole. The reason for choosing the end sides to set the assembly portion 21 is that for the first heat conducting sheet as a whole, which is used as an external heating surface, the two ends are generally not commonly used areas, and the middle is a commonly used area. Therefore, if an assembly portion must be provided to assemble the first heat conducting sheet and the support member, the assembly portion 21 is provided at the end sides, which can be the left and right sides or the front and back sides or the bottom surface. The end sides emphasize the areas on both sides of the middle area. Because once the assembly portion is provided, the flexibility of the area will have a certain impact. Therefore, in order not to affect the middle area of ​​the commonly used area, the assembly portion 21 is provided at both ends of the first heat conducting sheet 3. Of course, the assembly portions 21 at the two ends can be installed on the same support member or different supports. In another embodiment, the assembly portion can be provided on the support member, and the first heat conducting plate can be limited by utilizing the assembly portion on the support member. For example, a slot is provided on the surface of the support member, and the two ends of the heat conducting plate are inserted into the slot, or welding, protrusion fixation, etc. are added to the basis, or welding is directly adopted. The specific structure will not be repeated here.

[0078] Example 19, as Figure 27 The flexible styling tool shown includes a handle 12, a first shell 13, and a second shell 14. The handle 12 has a built-in main control circuit board, and the first shell 13 and the second shell 14 respectively have built-in first and second heating devices. The first and second heating devices are electrically connected to the main control circuit board via wires. The first shell 13 and the second shell 14 can be relatively opened and closed for clamping. The first heating device has a first flexible heating clamping surface, and the second heating device has a second flexible heating clamping surface, which together constitute a flexible heating clamp for the hair.

[0079] In order to assemble the first heating device and the second heating device, taking the first shell 13 as an example, a first mounting groove is provided on the first shell 13, and the first mounting groove has a first opening facing the second shell 14. The first heating device can be floatingly limited and assembled in the first mounting groove. In order to complete the assembly, a limiting member 15 is provided on the first heating device. The limiting member 15 is generally set to a heat-insulating material to prevent the heat of the heating device from being directly transferred to the first shell 13 through the limiting member 15. The specific first heating device includes a first heating component 1, a second heating component 2 and a first thermal conductive sheet 3. The first heating component 1 includes a PTC heating element 10 and a thermal conductor 11 covered on the PTC heating element 10. The thermal conductor 11 is made of a metal material with high thermal conductivity. The first thermal conductive sheet 3 is a metal sheet with high thermal conductivity. By limiting the thickness to 0.1-1mm, it has reliable elastic deformation ability. The first thermal conductive sheet 3 integrally covers the surface of the thermal conductor 11 of the first heating component 1 and the second heating component 2. The first thermal conductive sheet 3 is clamped on the thermal conductor 11 of the first heating component 1 and the second heating component 2 by local thickening and bending. There are slots on both sides of the thermal conductor 11. The limiting member 15 is inserted into the slot by an insert block and assembled as a whole with the thermal conductor 11. The limiting members 15 at both ends each have a tongue, and the tongues at both ends limit the overall first heating device to the first mounting groove, and elastic support is provided by the elastic member 8 on the bottom surface of the thermal conductor 11 of the first heating component 1 and the second heating component 2. As shown in the figure, the first heating component 1 is equipped with a first elastic member 8 and a second elastic member 8. The bottom surface of the first heating component 1 close to the second heating component 2 is supported by the elastic member 8. The bottom of the elastic member 8 is limited to the limiting column at the bottom of the first mounting groove, and a mounting seat is provided on the bottom surface of the limiting member assembled with the heat conductor 11 of the first heating component 1, and the second elastic member 8 is provided on the mounting seat. Similarly, the second shell adopts the same structure to assemble the second heating device, which will not be described in detail here. In this embodiment, a temperature sensing sheet is also provided and placed between the heat conductor and the heat conductor to measure the temperature of the heat conductor, or it is provided on the surface (inner surface or outer surface) of the heat conductor, any position where the temperature of the heating component can be measured.

[0080] Example 20, as Figure 28 , which is a structural diagram of a flexible hair styling tool using an elastic member 9 having an arc support surface.

[0081] Example 21, as Figure 29 , which is a structural diagram of a flexible hair styling tool according to embodiment 13, wherein the heating device of embodiment 13 is disposed in the second shell 14.

[0082] Example 22, as Figure 30The figure shows the structure of a flexible hair styling tool according to Example 17. A limiting bracket 18 is used to limit the movable position of the support member (heating component or non-heating component). Taking the second housing 14 as an example, the limiting bracket 18 is assembled and fixed in the second mounting slot of the second housing 14. The limiting bracket 18 has an opening 22, through which the elastic member 8 acts on the bottom surface of the heat conductor 11, and thus on the entire heat conductor. The heat conductor 11 has a lower hook 19 that engages with the upper hook 20 of the limiting bracket 18. The limiting bracket 18 encloses the heat conductor 11 to a certain extent. Using a heat-insulating material, it can effectively isolate heat from the second housing 14, making the second housing 14 feel cooler.

[0083] like Figure 31 The following is an electron microscope image of the hair after a traditional hair straightener rubs against the hair. It can be seen that the hair scales have obvious wear and tear caused by friction. Figure 32 The following is an electron micrograph of the flexible hair styling device of the present invention after rubbing against hair. It shows only minor damage to the hair scales. Therefore, the heating device of the present invention provides a superior flexible gripping effect, minimizing friction with the hair during the styling process, effectively protecting the user's hair quality.

[0084] In order to moisturize the head well, a layer of cloth can be covered on the surface of the heat conductive sheet. The cloth layer can be coated to make it more water-locking. Water forms water droplets on the surface of the cloth layer for the hair to absorb.

[0085] The working principle of the embodiment of the present invention is based on the basic solution of dividing the overall heating component into two independent heating components and then configuring an elastically deformable heat conductive sheet that covers them together, thereby achieving a flexible heating and clamping effect on the hair, reducing the hard friction caused by rigid contact, and thus causing less damage to the hair scales.

[0086] Compared to the prior art, the flexible hair styling iron and its heating device provided in the embodiments of the present invention have a more reliable flexible clamping structure, which can effectively solve the problem of insufficient overall flexibility of the combination of the heating plate, U-shaped bracket, and heater in the prior art, thereby achieving a better flexible heating and clamping effect.

[0087] Those skilled in the art should understand that the various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A heating device, characterized in that: The invention comprises at least one heat conducting plate providing an external heating surface, the heat conducting plate being elastically deformable, at least two groups of support members for supporting the heat conducting plate being provided on the bottom surface of the heat conducting plate, at least one of the support members being elastically floated by an elastic member, at least one of the elastically floatable support members being a heating component, and the heating component being in heat conduction contact with the heat conducting plate; after the heat conducting plate is pressurized, at least one group of the support members is squeezed and moves downward according to the position of the force, and after the support members move downward, a local suspension gap is generated between the support members and the heat conducting plate.

2. A heating device according to claim 1, characterized in that: The supporting members are all the heating components.

3. A heating device according to claim 1, characterized in that: At least one of the supporting members is a non-heat-generating component and is located at an end side of the heat-generating component.

4. A heating device according to claim 1, characterized in that: The heating component includes a heating element and a heat conductor, wherein the heat conductor is arranged between the heating element and the heat conducting plate, so that the heat of the heating element is conducted to the heat conducting plate through the heat conductor.

5. A heating device according to claim 1, characterized in that: The heat conducting sheet is a metal sheet.

6. A heating device according to claim 1 or 5, characterized in that: The thickness of the heat conducting sheet is 0.1-1 mm.

7. A heating device according to claim 1, characterized in that: The surface of the heat conducting sheet is covered with a covering cloth.

8. A heating device according to claim 7, characterized in that: The covering cloth comprises a fabric layer arranged on the outer surface of the heat conducting plate and a covering layer arranged outside the fabric layer.

9. A heating device according to claim 8, characterized in that: The coating is a silicone layer or a PTFE layer.

10. A heating device according to claim 7, characterized in that: The thickness of the covering cloth is 0.25-0.65 mm.

11. A heating device according to claim 1, characterized in that: The bottom surface of the supporting member is elastically supported by at least one elastic member to achieve elastic floating.

12. A heating device according to claim 1, characterized in that: The elastic member has an arc support surface to achieve multi-directional elastic floating.

13. The heating device according to claim 1, characterized in that: The elastic member is a spring, a flexible support body, or a combination of the two.

14. A heating device according to claim 1, characterized in that: The heat conducting sheet is assembled with the supporting member via an assembling portion.

15. A heating device according to claim 14, characterized in that: The mounting portions are located at both end sides of the heat conducting sheet.

16. The heating device according to claim 1, characterized in that: It also includes a limiting bracket, and the support member is movably limited on the limiting bracket through a limiting portion.

17. A flexible hair styling tool, characterized in that: The invention comprises a handle and a first shell and a second shell that can be opened and closed and clamped. The first shell is provided with a first mounting groove, the first mounting groove has a first opening, and at least one heating device according to any one of claims 1 to 16 is assembled in the first mounting groove. The external heating surface of the heating device is exposed at the first opening and serves as a first flexible heating clamping surface for the hair.

18. A flexible hair styling tool according to claim 17, characterized in that: The second shell is provided with a second mounting groove having a second opening. At least one heating device is installed in the second mounting groove. The external heating surface of the heating device is exposed at the second opening and serves as a second flexible heating clamping surface for the hair.

Images